Some standard content:
Machinery Industry Standard of the People's Republic of China
JB/T6680~6681-93
Corn Harvester
Published on 1993-06-04
Ministry of Machinery Industry of the People's Republic of China
Implemented on 1994-01-01
Machine Industry Standard of the People's Republic of China
Corn Harvester
1 Subject Content and Scope of Application
Technical Conditions
JB/T 6680-93
This standard specifies the main performance indicators, technical requirements, factory test and inspection rules, as well as marking, packaging, transportation and storage of corn harvesters and corn combine harvesters (hereinafter referred to as harvesters). This standard applies to suspended, towed and self-propelled corn harvesters. Cited standards
GB1147
GB9439
GB10395.1
GB10396
GB/T13306
JB/T6678
ZBT35001
ZBB93008
HG2196
Main performance indicators
Technical conditions for high-quality carbon structural steel
General technical conditions for internal combustion engines
Agricultural and forestry tractors and machinery, lawn and gardening power machineryAgricultural and forestry tractors and machinery, lawn and gardening power machinerySymbols for machines and machinery
Gray cast iron parts
Agricultural and forestry tractors and machinery
Operation symbols for drivers and Other symbols
General symbols
Symbols for driver operation and other symbols:
Agricultural tractors
Part I: General
Safety technical requirements
Agricultural and forestry tractors and machinery
Safety signs
Technical conditions for stalk choppers
Basic technical conditions for automotive electrical equipment
Chopping blades for flail choppers
Rubber materials for motor vehicles
Basic technical conditions for tractors
Painting of agricultural machinery
When the harvester is harvesting at the maximum continuous feeding amount, the moisture content of the grain is 25% to 30%, the lodging rate of the plant is less than 5%, the drooping rate of the ear is less than 15%, and the minimum ear height is greater than 35 cm, Its main performance shall meet the requirements of Table 1: Approved by the Ministry of Machinery Industry on June 4, 1993
Implemented on January 1, 1994
(Self-propelled wheel type)
Braking performance
(Self-propelled wheel type)
Reliability
Base seed chopping
Recovery type"
Traveling brake
JB/T6680-93
Grain loss rate
Bunch loss rate
Grain crushing rate
Bract profit rate
Steamed stalk cutting
Standard deviation of cutting length
Relative error of cutting length
Cutting height
Environmental noise
Ear position noise (with dancing room) dB(A)
Cold brake deceleration
Parking brake
Effectiveness
Note: 1》Harvesters with stem chopping and returning functions should comply with the provisions of JB/T6678. 4 Technical requirements
It should be able to park reliably on a dry and hard longitudinal
slope of 1+5 or 11°
4.1 Harvesters should comply with the requirements of this standard and be manufactured according to product drawings and technical documents approved by the prescribed procedures. 4.2 Main parts and components
4.2.1 Picking roller, stem pulling roller, and skinning roller
4.2.1.1 Picking and skinning rollers should be made of HT200 gray cast iron not lower than that specified in GB9439, and other materials with mechanical properties not lower than those specified are allowed to be used.
4.2.1.2 The stem pulling roller can be made of castings or welded with steel plates. The casting material shall comply with the provisions of Article 4.2.1.1. The steel plate shall be made of No. 10 steel specified in GB699, and other materials with mechanical properties not lower than those specified are allowed to be used. 4.2.1.3 The radial runout tolerance of the picking roller, the pulling stem roll, and the leftover skin iron roll is 1.5mm. The peeling rubber roll shall be made of BF76632 nitrile rubber not lower than that specified in HG2196, and other rubber materials with mechanical properties not lower than those specified are allowed to be used.
4.2.2 Picking plate
4.2.2.1 The picking plate shall be made of No. 45 steel not lower than that specified in GB699, and other materials with mechanical properties not lower than those specified are allowed to be used.
4.2.2.2 The working part of the picking plate shall be heat treated, and its surface hardness shall be 48~55FIRC. 4.2.3 Cutter (crusher) blades
Flinger-type shredder blades shall comply with the provisions of ZBB93008. 4.2.3.1
4.2.3.2 Cutter blades and shredder drum moving and fixed knives are recommended to be manufactured with materials specified in ZBB93008 and alloy powder high-value induction welding edge strengthening process, and other materials with mechanical properties not lower than those specified are allowed to be manufactured. 4.2.3.3 The straightness tolerance of the fixed blade edge of the shredder drum is 10 grades. 4.2.4 Transmission chain and sprocket, conveyor chain and sprocket, universal joint drive shaft, transmission gear, spline shaft, walking wheel rim, wheel hub bolts and nuts, gearbox fork, clutch compression spring, screen, screw conveyor, hydraulic cylinder, shredder-type shredder mechanism and grindstone and other parts shall comply with the relevant standards.
4.2.5 The outer surface of the casting should be smooth and free of burrs. The raised parts should have a smooth transition. The working surface is not allowed to have cracks, shrinkage and casting defects that affect the mechanical strength.
JB/T6680-93
4.2.6 The welded parts should be firm and the welds should be smooth. Cracks, slag inclusions, burn-through, desoldering and welding defects that affect the mechanical strength are not allowed. 4.2.7 The fasteners and connectors should be treated with surface anti-rust treatment, and the fasteners should be galvanized first. 4.2.8 The grain separation mechanism should be able to effectively separate the grains, and the front end should be able to float upward. The inner surface of the slideway and the shell of the chain scraper type ear elevator should be smooth and free of burrs. The straightness tolerance of the working surface of the slideway is 2mm/4.2.9bzxZ.net
m, and the parallelism tolerance of the two slideways is 3mm/m. 4.2.10 Shaving mechanism
4.2.10.1 The peeling roller after assembly should rotate flexibly, and the clamping force between the rubber and iron rollers should be 550~830N. 4.2.10.2 The nail teeth on the peeling iron strip should not be loose. The nail teeth are not allowed to be stuck when rotating. 4.2.10.3 The film of the peeling rubber strip should not be loose when working. Shredding roller
4.2.11.1 The radial total runout tolerance of the outer edge of the shredding roller blade is 11 levels. 4.2.11.2 The shredding roller should be dynamically balanced, and the balancing accuracy is G6.3 level. 4.2.12
The guide rail of the sharpening mechanism should be parallel to the axis of the shredding roller, and the parallelism tolerance is 10 levels. The throwing mechanism should be easy to operate, flexible to rotate, and reliable to lock. The throwing distance can be adjusted: the rotation angle of the throwing roller should be greater than 90°. 4.2.13
4.2.14 Transmission system
4.2.14.1 In open transmission and cross transmission (excluding specially designed transmission), the position tolerance of the symmetrical center plane of each pulley groove in the same circuit is: 0.3% of the pulley center distance when the center distance is less than 1.2m; 0.5% of the pulley center distance when it is greater than or equal to 1.2m.
In the same circuit, the position tolerance of the symmetrical center plane of each sprocket tooth is 0.2% of the sprocket center distance. 4.2. 14.2
4.2.14.3 The transmission should be safe and reliable, and protective covers should be installed in the parts that operators often approach. 4.2.14.4 Cast continuously variable speed pulleys and pulleys with a speed exceeding 400r/min and a weight greater than 5kg should be statically balanced, and the balance accuracy should be G6.3.
4.2.15 Frame welding (assembly)
The diagonal dimensions of the horizontal and vertical planes of the frame shall not exceed 0.2% of their diagonal dimensions. The parallelism tolerance of the bottom beams parallel to each other in the same plane is 2mm/m. 4.2.15.2
4.2.15.3 The parallelism tolerance of the steering wheel support shaft (or hole) and the frame vertical beam (side and bottom surface) is 12 levels. 4.2.16 The welding of the ear picking frame should ensure that its upper surface is parallel to the upper surface of the gear box seat, fixed seat and passive sprocket seat, and the parallelism tolerance is 2mm/m.
4.2.17 Hydraulic system
The hydraulic control system and steering system should be flexible and reliable without sticking. 4.2.17.1
The oil pipes of each oil circuit of the hydraulic system should be firmly fixed, and the surface of the oil pipes is not allowed to have cracks, scratches and obvious flattening defects. 4.2.17.2
Each oil pipeline and joint should be within 1.5 times the operating pressure, and the pressure should be maintained for 2 minutes. The pipeline should not seep or leak. 4. 2. 17.3
4.2. 17.4
The cleanliness of the hydraulic system should comply with the relevant standards. The drive axle assembly
The clutch should ensure smooth and reliable engagement and complete and thorough separation. When the travel clutch is disengaged, the speed change of each gear should be flexible without any sticking. 4.2.18.3 When working in each gear, the gears of the transmission system shall not make abnormal sounds. The speed change interlocking device should work reliably to ensure that the gears do not automatically jump.
4.2.18.4 The assembled drive axle components should be tested on the bench according to the specified load and speed, and the test should meet the above requirements.
4.2.19 The matching parts and standard parts of the harvester should comply with the relevant standards; all self-made parts must be inspected and qualified; outsourced parts and purchased parts must have a certificate of conformity and can be assembled only after they have been inspected and qualified. 4.3 Overall assembly
JB/T6680-93
4.3.1 Each adjustment mechanism should ensure easy operation, flexible adjustment and reliability. The adjustment range of each component should be able to reach the specified limit position. 4.3.2 Each operating mechanism should be light and flexible, with appropriate tightness. All operating parts that require automatic return should be able to automatically return to their original positions after the operating force is removed.
4.3.3 The upper surfaces of each row of ear picking racks on the cutting platform should be parallel, with a parallelism tolerance of 3mm. 4.3.4 The lifting speed of the hydraulic lifting mechanism of the cutting platform is 0.2~0.4m/s when it is in working condition. After being lifted to the highest position and staying for 30 minutes, the static settlement of the cutting platform should not exceed 15mm.
The gap between each pair of ear picking, stem pulling and ear picking plates should be adjustable. 4.3.5
The clearance between the stem pulling roller and its grass cleaning knife and the rear lower feeding wheel and its grass cleaning knife shall not exceed 1.5mm. 4.3.6
The clearance between the moving knife and the fixed knife of the chopping drum shall not exceed 1mm, and it shall be uniform and consistent over the entire length when adjusted. 4.3.7
The clearance between the moving knife and the bottom shell of the chopping drum shall not exceed 3mm, and it shall be uniform and consistent over the entire length when adjusted. 4.3.8
All parts and components shall be firmly connected, and the bolts and nuts shall be tightened. The performance grade of fasteners in important parts is: bolts grade 8.8, nuts grade 8.
The engine of the self-propelled harvester shall comply with the provisions of GB1147; the tractor used in conjunction with it shall comply with the provisions of NJ80. The engine and hydraulic system of the self-propelled harvester shall not be allowed to leak oil, water or air: the closed parts of the harvester shall be tight, and grain leakage is not allowed.
4.3.12 The engine should start smoothly and stably, and shut down completely and reliably; it should start smoothly when the ambient temperature is not lower than -5℃. The clutches of each system of the harvester must be engaged smoothly and reliably, and separated completely. 4.3.13
The maximum driving speed of a self-propelled harvester should be less than or equal to 20km/h; that of a towed harvester should be less than or equal to 15km/h. The travel brake device and parking brake device must ensure that the harvester stops reliably after braking. 4.3.15
The gearbox should shift gears flexibly and work reliably, without random gear shifting and gear disengagement; the cleanliness of the gearbox (or transmission box) should not exceed 4.3.16
15mg/kW.
4.3.17 The display signals of instruments and indicators should be clear and accurate, and the switches should work reliably; the electrical equipment should comply with the provisions of ZBT35001. 4.3.18· Harvesters should be equipped with light and sound signal systems to monitor the working process of the machine and the main working parts under extreme working conditions as needed.
Self-propelled harvesters should be equipped with lighting equipment that can meet the needs of the operation and meet the safety requirements. Self-propelled harvesters should be equipped with fire extinguishers and should be installed in a position that is easy to remove and unload. · Harvester coating should comply with the provisions of NJ/Z3. -4.3.21
The structure of the self-propelled harvester should ensure that it can be operated by a single driver and is convenient and comfortable to drive. 4.3.22
The operation symbols of the harvester should be fixed near the corresponding operating device, and the operation symbols should comply with the provisions of GB4269.14269.2. 4.3.24 The adjustment, repair and maintenance of the harvester should be convenient. The accessories, spare parts and tools supplied with the product should be complete. 4.3.25 The general safety technical requirements of the harvester should comply with the provisions of GB10395.1; special safety technical requirements should be specified according to the characteristics of the specific model. Safety signs shall comply with the provisions of GB10396. 4.3.26 If the user uses and maintains the machine in accordance with the instructions provided by the manufacturer, the warranty period is one year (if it is not in time for the harvest season, it can be extended for six months). During the warranty period, if the machine is damaged or cannot work properly due to poor manufacturing quality, the manufacturer shall replace or repair it for the user free of charge (except for wearing parts). 5 Factory test and inspection rules
5.1 The assembled harvester rotary working parts shall be tested for 10 minutes at the specified working speed. 5.2 After each harvester is assembled and passes the final inspection by the technical inspection department of the manufacturer, it shall be tested for 2 hours at rated speed. The test shall meet the following requirements:
Starting is smooth and convenient, and the engine is completely and reliably turned off a.
b. Each control system is flexible, accurate and reliable. The adjustment range of each component shall meet the design requirements; the machine runs smoothly, without any jamming or abnormal sound; c
Connectors and fasteners shall not be loose;
JB/T6680-93
Gearbox, bearing seat and bearing parts are not allowed to have serious heating phenomenon, and the temperature rise shall not exceed 25℃; e.
f. Oil leakage, water leakage and air leakage are not allowed.
5.3 Each self-propelled harvester shall be tested for walking. The test shall be carried out under various gears, and the test results shall comply with the provisions of Articles 4.3.11 to 4.3.17 of this standard, and the test time shall comply with the provisions of product technical conditions. 5.4 If the above requirements are not met during the test, the test should be stopped immediately and the fault should be eliminated before additional tests are carried out. Each harvester should be inspected and qualified by the quality inspection department of the manufacturer and issued a certificate of conformity before it can leave the factory. 5.5
Harvester withdrawal When the following situations occur, type inspection should be carried out in accordance with relevant standards: 5.6
Trial and type identification of new products or old products transferred to the factory for production; After formal production. If there are major changes in structure, process, and materials, which may affect product performance; During normal production, periodically or after accumulating a certain amount of output, an inspection should be carried out periodically, generally once every three years; c
When the product is stopped for a long time and production is resumed; When the factory inspection results are significantly different from the last type inspection; When the national quality supervision agency proposes a requirement for type inspection. 5.7 For harvesters delivered from the factory, the ordering unit has the right to conduct random inspections on the harvesters leaving the factory in accordance with the provisions of this standard. The random inspection rules and judgment methods shall be jointly agreed upon by the ordering unit and the manufacturer. 6 Marking, packaging, transportation and storage
6.1 Each harvester shall be marked with a product label in a conspicuous position in accordance with the provisions of GB/T13306, and the content shall include: a.
Manufacturer name;
Product model and name;
Product factory number;
Product factory date.
The lubrication points, transmission system, main adjustment points and precautions of the harvester shall be marked clearly. 6.2
6.3The registered trademark shall be fixed in a conspicuous position of each harvester. 6.4The packaging mark shall be marked in a conspicuous place of each package, and the content of the packaging mark shall include the product number, name, part number, quantity, weight, arrival station, departure station and date.
6.5 The harvester shall be complete after leaving the factory, and the accessories, spare parts, tools and parts that must be removed during transportation supplied with the machine shall be intact.
6.6 The random documents of the harvester include:
Packing list;
Product certificate of conformity;
Product instruction manual;
Product parts catalog.
The shipment of the harvester from the factory shall comply with the relevant regulations of the transportation department. It shall be ensured that the parts and components are not damaged under normal transportation conditions. 6.71
The storage of the harvester shall comply with the provisions of the relevant material and technical storage regulations. 6.8
Additional instructions:
This standard is proposed and managed by the China Agricultural Mechanization Science Research Institute of the Ministry of Machinery Industry. This standard was drafted by the China Agricultural Mechanization Science Research Institute and the Heilongjiang Agricultural Machinery Testing and Identification Station. The main drafters of this standard are Cao Hongguo, Geng Hong, Li Shaozeng and Wang Licheng. From the date of implementation of this standard, NJ173-79 "Technical Conditions for Corn Harvesters" will be invalid. 54
The cleanliness of the hydraulic system shall comply with the provisions of the relevant standards. Drive axle assembly
The clutch shall ensure smooth and reliable engagement, complete and thorough separation. When the travel clutch is disengaged, the speed change of each gear shall be flexible and without sticking. 4.2.18.3 When working in each gear, the gears of the transmission system shall not make abnormal sounds. The speed change interlocking device shall work reliably to ensure that the gears do not automatically jump.
4.2.18.4 The assembled drive axle components shall be tested on the bench according to the specified load and speed, and the test shall meet the above requirements.
4.2.19 The matching parts and standard parts of the harvester shall comply with the provisions of the relevant standards; all self-made parts must be inspected and qualified; outsourced parts and purchased parts must have a certificate of conformity, and can only be assembled after passing the inspection. 4.3 Overall assembly
JB/T6680-93
4.3.1 Each adjustment mechanism shall ensure easy operation, flexible adjustment and reliability. The adjustment range of each component should be able to reach the specified limit position. 4.3.2 Each operating mechanism should be light and flexible, with appropriate tightness. All operating parts that require automatic return should be able to automatically return to their original positions after the operating force is removed.
4.3.3 The upper surfaces of each row of ear picking racks on the cutting table should be parallel, with a parallelism tolerance of 3mm. 4.3.4 The lifting speed of the hydraulic lifting mechanism of the cutting table is 0.2-0.4m/s when it is in working condition. After being lifted to the highest position and staying for 30 minutes, the static settlement of the cutting table should not exceed 15mm.
The gap between each pair of ear picking, stem pulling and ear picking plates should be adjustable. 4.3.5
The gap between the stem pulling roller and its grass cleaning knife and the rear lower feeding wheel and its grass cleaning knife should not exceed 1.5mm. 4.3.6
The gap between the moving knife and the fixed knife of the shredding drum should not exceed 1mm, and it should be uniform and consistent over the entire length when adjusted. 4.3.7
The clearance between the moving knife of the shredder drum and the bottom shell plate shall not exceed 3mm, and shall be uniform and consistent over the entire length when adjusted. 4.3.8
All parts and components shall be firmly connected, and the bolts and nuts shall be tightened. The performance level of fasteners in important parts is: bolts grade 8.8, nuts grade 8.
The engine equipped with the self-propelled harvester shall comply with the provisions of GB1147; the matching tractor shall comply with the provisions of NJ80. The engine and hydraulic system of the self-propelled harvester shall not have oil leakage, water leakage or air leakage: the closed parts of the harvester shall be tight, and grain leakage is not allowed.
4.3.12 The engine shall start smoothly and steadily, and shut down completely and reliably; it shall be able to start smoothly when the ambient temperature is not lower than -5℃. The clutches of each system of the harvester must be connected smoothly and reliably, and separated completely. 4.3.13
The maximum speed of a self-propelled harvester shall be less than or equal to 20km/h; that of a towed harvester shall be less than or equal to 15km/h. The travel brake device and parking brake device must ensure that the harvester stops reliably after braking. 4.3.15
The gearbox should be flexible in shifting and reliable in operation, without any random gear shifting or gear disengagement; the cleanliness of the gearbox (or transmission box) shall not exceed 4.3.16
15mg/kW.
4.3.17 The display signals of instruments and indicators shall be clear and accurate, and the switches shall work reliably; the electrical equipment shall comply with the provisions of ZBT35001. 4.3.18·The harvester shall be equipped with a light and sound signal system to monitor the machine during the working process and the main working parts under the extreme working conditions as required.
The self-propelled harvester shall be equipped with lighting equipment that can meet the needs of the operation and meet the safety requirements. The self-propelled harvester shall be equipped with a fire extinguisher and shall be installed in a position that is easy to remove. ·The coating of the harvester shall comply with the provisions of NJ/Z3. -4.3.21
The structure of the self-propelled harvester shall ensure that it can be operated by one driver and is convenient and comfortable to drive. 4.3.22
The operation symbols of the harvester shall be fixed near the corresponding operating device, and the operation symbols shall comply with the provisions of GB4269.14269.2. 4.3.24 The adjustment, repair and maintenance of the harvester shall be convenient. The accessories, spare parts and tools supplied with the product shall be complete. 4.3.25 The general safety and technical requirements of the harvester shall comply with the provisions of GB10395.1; special safety and technical requirements shall be specified according to the characteristics of the specific model. Safety signs shall comply with the provisions of GB10396. 4.3.26 If the user uses and maintains the harvester in accordance with the instruction manual provided by the manufacturer, the warranty period is one year (if it does not catch up with the harvest season, it can be extended for six months). During the warranty period, if the harvester is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall replace or repair it for the user free of charge (except for wearing parts). 5 Factory test and inspection rules
5.1 The assembled harvester's rotary working parts should be tested for 10 minutes at the specified working speed. 5.2 After each harvester is assembled and passed the final inspection by the manufacturer's technical inspection department, it shall be tested for 2 hours at the rated speed. The test should meet the following requirements:
Starting is smooth and convenient, and the engine is completely and reliably shut downa.
b. Each control system is flexible, accurate and reliable. The adjustment range of each component should meet the design requirements; the machine runs smoothly, without any jamming or abnormal sound;c
Connectors and fasteners shall not be loose;
JB/T6680-93
Gearbox, bearing seat, and bearing parts are not allowed to have serious heating, and the temperature rise shall not exceed 25℃;e.
f. Oil leakage, water leakage, and air leakage are not allowed.
5.3 Each self-propelled harvester should be tested for walking. The test should be carried out under various gears, and the test results should comply with the provisions of Articles 4.3.11 to 4.3.17 of this standard. The test time should comply with the provisions of the product technical conditions. 5.4 If the test fails to meet the above requirements, the test should be stopped immediately and the fault should be eliminated before a supplementary test. Each harvester should be inspected and qualified by the quality inspection department of the manufacturer and issued a certificate of conformity before it can leave the factory. 5.5
When the harvester is withdrawn, type inspection should be carried out in accordance with relevant standards in the following circumstances: 5.6
Trial production and identification of new products or old products transferred to the factory for production; after formal production. If there are major changes in structure, process, and materials that may affect product performance; during normal production, periodically or after accumulating a certain amount of output. Periodic inspection should be carried out, generally once every three years; c
When the product is resumed after a long period of suspension; when the factory inspection results are significantly different from the last type inspection; when the national quality supervision agency proposes a requirement for type inspection. 5.7 For harvesters delivered from the factory, the ordering unit has the right to conduct random inspections on the harvesters according to the provisions of this standard. The inspection rules and judgment methods shall be agreed upon by the ordering unit and the manufacturer. 6 Marking, packaging, transportation and storage
6.1 Each harvester shall be fixed with a product label in a conspicuous position in accordance with the provisions of GB/T13306, and its contents shall include: a.
Manufacturer name;
Product model and name;
Product factory number;
Product factory date.
The lubrication points, transmission system, main adjustment points and precautions of the harvester shall be clearly marked. 6.2
6.3 The registered trademark shall be fixed in a conspicuous position on each harvester. 6.4 The packaging mark shall be marked in a conspicuous place on each package, and the content of the packaging mark shall include the product number, name, item number, quantity, weight, arrival station, departure station and date.
6.5 The harvester shipped out of the factory should be guaranteed to be complete. The accessories, spare parts, tools and parts that must be removed during transportation should be guaranteed to be intact.
6.6 The documents accompanying the harvester include:
Packing list;
Product certificate of conformity;
Product instruction manual;
Product parts atlas.
The shipment of the harvester out of the factory should comply with the relevant regulations of the transportation department. It should be ensured that the parts and components are not damaged under normal transportation conditions. 6.71
The storage of the harvester should comply with the provisions of the relevant material and technical storage regulations. 6.8
Additional remarks:
This standard was proposed and managed by the China Agricultural Mechanization Science Research Institute of the Ministry of Machinery Industry. This standard was drafted by the China Agricultural Mechanization Science Research Institute and the Heilongjiang Agricultural Machinery Testing and Identification Station. The main drafters of this standard are Cao Hongguo, Geng Hong, Li Shaozeng and Wang Licheng. From the date of implementation of this standard, NJ173-79 "Technical Conditions for Corn Harvesters" will be invalidated.4
The cleanliness of the hydraulic system shall comply with the provisions of the relevant standards. Drive axle assembly
The clutch shall ensure smooth and reliable engagement, complete and thorough separation. When the travel clutch is disengaged, the speed change of each gear shall be flexible and without sticking. 4.2.18.3 When working in each gear, the gears of the transmission system shall not make abnormal sounds. The speed change interlocking device shall work reliably to ensure that the gears do not automatically jump.
4.2.18.4 The assembled drive axle components shall be tested on the bench according to the specified load and speed, and the test shall meet the above requirements.
4.2.19 The matching parts and standard parts of the harvester shall comply with the provisions of the relevant standards; all self-made parts must be inspected and qualified; outsourced parts and purchased parts must have a certificate of conformity, and can only be assembled after passing the inspection. 4.3 Overall assembly
JB/T6680-93
4.3.1 Each adjustment mechanism shall ensure easy operation, flexible adjustment and reliability. The adjustment range of each component should be able to reach the specified limit position. 4.3.2 Each operating mechanism should be light and flexible, with appropriate tightness. All operating parts that require automatic return should be able to automatically return to their original positions after the operating force is removed.
4.3.3 The upper surfaces of each row of ear picking racks on the cutting table should be parallel, with a parallelism tolerance of 3mm. 4.3.4 The lifting speed of the hydraulic lifting mechanism of the cutting table is 0.2-0.4m/s when it is in working condition. After being lifted to the highest position and staying for 30 minutes, the static settlement of the cutting table should not exceed 15mm.
The gap between each pair of ear picking, stem pulling and ear picking plates should be adjustable. 4.3.5
The gap between the stem pulling roller and its grass cleaning knife and the rear lower feeding wheel and its grass cleaning knife should not exceed 1.5mm. 4.3.6
The gap between the moving knife and the fixed knife of the shredding drum should not exceed 1mm, and it should be uniform and consistent over the entire length when adjusted. 4.3.7
The clearance between the moving knife of the shredder drum and the bottom shell plate shall not exceed 3mm, and shall be uniform and consistent over the entire length when adjusted. 4.3.8
All parts and components shall be firmly connected, and the bolts and nuts shall be tightened. The performance level of fasteners in important parts is: bolts grade 8.8, nuts grade 8.
The engine equipped with the self-propelled harvester shall comply with the provisions of GB1147; the matching tractor shall comply with the provisions of NJ80. The engine and hydraulic system of the self-propelled harvester shall not have oil leakage, water leakage or air leakage: the closed parts of the harvester shall be tight, and grain leakage is not allowed.
4.3.12 The engine shall start smoothly and steadily, and shut down completely and reliably; it shall be able to start smoothly when the ambient temperature is not lower than -5℃. The clutches of each system of the harvester must be connected smoothly and reliably, and separated completely. 4.3.13
The maximum speed of a self-propelled harvester shall be less than or equal to 20km/h; that of a towed harvester shall be less than or equal to 15km/h. The travel brake device and parking brake device must ensure that the harvester stops reliably after braking. 4.3.15
The gearbox should be flexible in shifting and reliable in operation, without any random gear shifting or gear disengagement; the cleanliness of the gearbox (or transmission box) shall not exceed 4.3.16
15mg/kW.
4.3.17 The display signals of instruments and indicators shall be clear and accurate, and the switches shall work reliably; the electrical equipment shall comply with the provisions of ZBT35001. 4.3.18·The harvester shall be equipped with a light and sound signal system to monitor the machine during the working process and the main working parts under the extreme working conditions as required.
The self-propelled harvester shall be equipped with lighting equipment that can meet the needs of the operation and meet the safety requirements. The self-propelled harvester shall be equipped with a fire extinguisher and shall be installed in a position that is easy to remove. ·The coating of the harvester shall comply with the provisions of NJ/Z3. -4.3.21
The structure of the self-propelled harvester shall ensure that it can be operated by one driver and is convenient and comfortable to drive. 4.3.22
The operation symbols of the harvester shall be fixed near the corresponding operating device, and the operation symbols shall comply with the provisions of GB4269.14269.2. 4.3.24 The adjustment, repair and maintenance of the harvester shall be convenient. The accessories, spare parts and tools supplied with the product shall be complete. 4.3.25 The general safety and technical requirements of the harvester shall comply with the provisions of GB10395.1; special safety and technical requirements shall be specified according to the characteristics of the specific model. Safety signs shall comply with the provisions of GB10396. 4.3.26 If the user uses and maintains the harvester in accordance with the instruction manual provided by the manufacturer, the warranty period is one year (if it does not catch up with the harvest season, it can be extended for six months). During the warranty period, if the harvester is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall replace or repair it for the user free of charge (except for wearing parts). 5 Factory test and inspection rules
5.1 The assembled harvester's rotary working parts should be tested for 10 minutes at the specified working speed. 5.2 After each harvester is assembled and passed the final inspection by the manufacturer's technical inspection department, it shall be tested for 2 hours at the rated speed. The test should meet the following requirements:
Starting is smooth and convenient, and the engine is completely and reliably shut downa.
b. Each control system is flexible, accurate and reliable. The adjustment range of each component should meet the design requirements; the machine runs smoothly, without any jamming or abnormal sound;c
Connectors and fasteners shall not be loose;
JB/T6680-93
Gearbox, bearing seat, and bearing parts are not allowed to have serious heating, and the temperature rise shall not exceed 25℃;e.
f. Oil leakage, water leakage, and air leakage are not allowed.
5.3 Each self-propelled harvester should be tested for walking. The test should be carried out under various gears, and the test results should comply with the provisions of Articles 4.3.11 to 4.3.17 of this standard. The test time should comply with the provisions of the product technical conditions. 5.4 If the test fails to meet the above requirements, the test should be stopped immediately and the fault should be eliminated before a supplementary test. Each harvester should be inspected and qualified by the quality inspection department of the manufacturer and issued a certificate of conformity before it can leave the factory. 5.5
When the harvester is withdrawn, type inspection should be carried out in accordance with relevant standards in the following circumstances: 5.6
Trial production and identification of new products or old products transferred to the factory for production; after formal production. If there are major changes in structure, process, and materials that may affect product performance; during normal production, periodically or after accumulating a certain amount of output. Periodic inspection should be carried out, generally once every three years; c
When the product is resumed after a long period of suspension; when the factory inspection results are significantly different from the last type inspection; when the national quality supervision agency proposes a requirement for type inspection. 5.7 For harvesters delivered from the factory, the ordering unit has the right to conduct random inspections on the harvesters according to the provisions of this standard. The inspection rules and judgment methods shall be agreed upon by the ordering unit and the manufacturer. 6 Marking, packaging, transportation and storage
6.1 Each harvester shall be fixed with a product label in a conspicuous position in accordance with the provisions of GB/T13306, and its contents shall include: a.
Manufacturer name;
Product model and name;
Product factory number;
Product factory date.
The lubrication points, transmission system, main adjustment parts and precautions of the harvester shall be clearly marked. 6.2
6.3 The registered trademark shall be fixed in a conspicuous position on each harvester. 6.4 The packaging mark shall be marked in a conspicuous place on each package, and the content of the packaging mark shall include the product number, name, item number, quantity, weight, arrival station, departure station and date.
6.5 The harvester shipped out of the factory should be guaranteed to be complete. The accessories, spare parts, tools and parts that must be removed during transportation should be guaranteed to be intact.
6.6 The documents accompanying the harvester include:
Packing list;
Product certificate of conformity;
Product instruction manual;
Product parts atlas.
The shipment of the harvester out of the factory should comply with the relevant regulations of the transportation department. It should be ensured that the parts and components are not damaged under normal transportation conditions. 6.71
The storage of the harvester should comply with the provisions of the relevant material and technical storage regulations. 6.8
Additional remarks:
This standard was proposed and managed by the China Agricultural Mechanization Science Research Institute of the Ministry of Machinery Industry. This standard was drafted by the China Agricultural Mechanization Science Research Institute and the Heilongjiang Agricultural Machinery Testing and Identification Station. The main drafters of this standard are Cao Hongguo, Geng Hong, Li Shaozeng and Wang Licheng. From the date of implementation of this standard, NJ173-79 "Technical Conditions for Corn Harvesters" will be invalidated.19The matching parts and standard parts of the harvester shall comply with the provisions of relevant standards; all self-made parts must be inspected and qualified; outsourced parts and purchased parts must have certificates of conformity and can only be assembled after being inspected and qualified. 4.3 Overall assembly
JB/T6680-93
4.3.1 Each adjustment mechanism shall ensure convenient operation, flexible adjustment and reliability. The adjustment range of each component shall be able to reach the specified limit position. 4.3.2 Each operating mechanism shall be light and flexible, with appropriate tightness. All operating parts that require automatic return shall be able to automatically return to their original positions after the operating force is removed.
4.3.3 The upper surfaces of each row of ear picking racks on the cutting table shall be parallel, with a parallelism tolerance of 3mm. 4.3.4 The lifting speed of the hydraulic lifting mechanism of the cutting table is 0.2~0.4m/s when in working condition. After being lifted to the highest position and staying for 30 minutes, the static settlement of the cutting table shall not exceed 15mm.
The gap between each pair of ear picking, stem pulling and ear picking plates should be adjustable. 4.3.5
The gap between the stem pulling roller and its grass cleaning knife and the gap between the rear lower feeding wheel and its grass cleaning knife should not exceed 1.5mm. 4.3.6
The gap between the moving knife and the fixed knife of the chopping drum should not exceed 1mm, and it should be uniform and consistent over the entire length when adjusted. 4.3.7
The gap between the moving knife and the bottom shell plate of the chopping drum should not exceed 3mm, and it should be uniform and consistent over the entire length when adjusted. 4.3.8
All parts and components should be firmly connected, and the bolts and nuts should be tightened. The performance grade of fasteners in important parts is: bolts grade 8.8, nuts grade 8.
The engine equipped with a self-propelled harvester should comply with the provisions of GB1147; the matching tractor should comply with the provisions of NJ80. The engine and hydraulic system of the self-propelled harvester shall not have oil leakage, water leakage or air leakage: the closed parts of the harvester shall be tight and grain leakage is not allowed.
4.3.11
4.3.12 The engine shall start smoothly and stably, and shut down completely and reliably; it shall be able to start smoothly when the ambient temperature is not lower than -5℃. The clutches of each system of the harvester must be engaged smoothly and reliably, and separated completely. 4.3.13
The maximum driving speed of the self-propelled harvester shall be less than or equal to 20km/h; that of the towed harvester shall be less than or equal to 15km/h. The travel brake device and parking brake device must ensure that the harvester can stop reliably after braking. 4.3.15
The gearbox shall be flexible in shifting and reliable in operation, and there shall be no random gearing or gear disengagement; the cleanliness of the gearbox (or transmission box) shall not exceed 4.3.16
15mg/kW.
4.3.17 The display signals of instruments and indicators shall be clear and accurate, and the switches shall work reliably; the electrical equipment shall comply with the provisions of ZBT35001. 4.3.18 The harvester shall be equipped with a light and sound signal system to monitor the machine during the working process and the main working parts under the extreme working conditions as required.
The self-propelled harvester shall be equipped with lighting equipment that can meet the needs of the operation and meet the safety requirements. The self-propelled harvester shall be equipped with a fire extinguisher and shall be installed in a position that is easy to remove and unload. · The coating of the harvester shall comply with the provisions of NJ/Z3. -4.3.21
The structure of the self-propelled harvester shall ensure that it can be operated by one driver and is convenient and comfortable to drive. 4.3.22
The operation symbols of the harvester shall be fixed near the corresponding operating device, and the operation symbols shall comply with the provisions of GB4269.14269.2. 4.3.24 The adjustment, repair and maintenance of the harvester shall be convenient. The accessories, spare parts and tools supplied with the product shall be complete. 4.3.25 The general safety technical requirements of harvesters shall comply with the provisions of GB10395.1; special safety technical requirements shall be specified according to the characteristics of specific models. Safety signs shall comply with the provisions of GB10396. 4.3.26 If the user uses and maintains the machine in accordance with the instruction manual provided by the manufacturer, the warranty period is one year (if it does not catch up with the harvest season, it can be extended for six months). During the warranty period, if the machine is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall replace or repair it for the user free of charge (except for wearing parts). 5 Factory test and inspection rules
5.1 The assembled harvester rotary working parts shall be tested for 10 minutes at the specified working speed. 5.2 After each harvester is assembled and passes the final inspection by the technical inspection department of the manufacturer, it shall be tested for 2 hours at rated speed. The test shall meet the following requirements:
Starting is smooth and convenient, and the engine is completely and reliably turned off a.
b. Each control system is flexible, accurate and reliable. The adjustment range of each component shall meet the design requirements; the machine runs smoothly, without any jamming or abnormal sound; c
Connectors and fasteners shall not be loose;
JB/T6680-93
Gearbox, bearing seat and bearing parts are not allowed to have serious heating phenomenon, and the temperature rise shall not exceed 25℃; e.
f. Oil leakage, water leakage and air leakage are not allowed.
5.3 Each self-propelled harvester shall be tested for walking. The test shall be carried out under various gears, and the test results shall comply with the provisions of Articles 4.3.11 to 4.3.17 of this standard, and the test time shall comply with the provisions of product technical conditions. 5.4 If the above requirements are not met during the test, the test should be stopped immediately and the fault should be eliminated before additional tests are carried out. Each harvester should be inspected and qualified by the quality inspection department of the manufacturer and issued a certificate of conformity before it can leave the factory. 5.5
Harvester withdrawal When the following situations occur, type inspection should be carried out in accordance with relevant standards: 5.6
Trial and type identification of new products or old products transferred to the factory for production; After formal production. If there are major changes in structure, process, and materials, which may affect product performance; During normal production, periodically or after accumulating a certain amount of output, an inspection should be carried out periodically, generally once every three years; c
When the product is stopped for a long time and production is resumed; When the factory inspection results are significantly different from the last type inspection; When the national quality supervision agency proposes a requirement for type inspection. 5.7 For harvesters delivered from the factory, the ordering unit has the right to conduct random inspections on the harvesters leaving the factory in accordance with the provisions of this standard. The random inspection rules and judgment methods shall be jointly agreed upon by the ordering unit and the manufacturer. 6 Marking, packaging, transportation and storage
6.1 Each harvester shall be marked with a product label in a conspicuous position in accordance with the provisions of GB/T13306, and the content shall include: a.
Manufacturer name;
Product model and name;
Product factory number;
Product factory date.
The lubrication points, transmission system, main adjustment points and precautions of the harvester shall be marked clearly. 6.2
6.3The registered trademark shall be fixed in a conspicuous position of each harvester. 6.4The packaging mark shall be marked in a conspicuous place of each package, and the content of the packaging mark shall include the product number, name, part number, quantity, weight, arrival station, departure station and date.
6.5 The harvester shall be complete after leaving the factory, and the accessories, spare parts, tools and parts that must be removed during transportation supplied with the machine shall be intact.
6.6 The random documents of the harvester include:
Packing list;
Product certificate of conformity;
Product instruction manual;
Product parts catalog.
The shipment of the harvester from the factory shall comply with the relevant regulations of the transportation department. It shall be ensured that the parts and components are not damaged under normal transportation conditions. 6.71
The storage of the harvester shall comply with the provisions of the relevant material and technical storage regulations. 6.8
Additional instructions:
This standard is proposed and managed by the China Agricultural Mechanization Science Research Institute of the Ministry of Machinery Industry. This standard was drafted by the China Agricultural Mechanization Science Research Institute and the Heilongjiang Agricultural Machinery Testing and Identification Station. The main drafters of this standard are Cao Hongguo, Geng Hong, Li Shaozeng and Wang Licheng. From the date of implementation of this standard, NJ173-79 "Technical Conditions for Corn Harvesters" will be invalid. 519The matching parts and standard parts of the harvester shall comply with the provisions of relevant standards; all self-made parts must be inspected and qualified; outsourced parts and purchased parts must have certificates of conformity and can only be assembled after being inspected and qualified. 4.3 Overall assembly
JB/T6680-93
4.3.1 Each adjustment mechanism shall ensure convenient operation, flexible adjustment and reliability. The adjustment range of each component shall be able to reach the specified limit position. 4.3.2 Each operating mechanism shall be light and flexible, with appropriate tightness. All operating parts that require automatic return shall be able to automatically return to their original positions after the operating force is removed.
4.3.3 The upper surfaces of each row of ear picking racks on the cutting table shall be parallel, with a parallelism tolerance of 3mm. 4.3.4 The lifting speed of the hydraulic lifting mechanism of the cutting table is 0.2~0.4m/s when in working condition. After being lifted to the highest position and staying for 30 minutes, the static settlement of the cutting table shall not exceed 15mm.
The gap between each pair of ear picking, stem pulling and ear picking plates should be adjustable. 4.3.5
The gap between the stem pulling roller and its grass cleaning knife and the gap between the rear lower feeding wheel and its grass cleaning knife should not exceed 1.5mm. 4.3.6
The gap between the moving knife and the fixed knife of the chopping drum should not exceed 1mm, and it should be uniform and consistent over the entire length when adjusted. 4.3.7
The gap between the moving knife and the bottom shell plate of the chopping drum should not exceed 3mm, and it should be uniform and consistent over the entire length when adjusted. 4.3.8
All parts and components should be firmly connected, and the bolts and nuts should be tightened. The performance grade of fasteners in important parts is: bolts grade 8.8, nuts grade 8.
The engine equipped with a self-propelled harvester should comply with the provisions of GB1147; the matching tractor should comply with the provisions of NJ80. The engine and hydraulic system of the self-propelled harvester shall not have oil, water or air leakage: the closed parts of the harvester shall be tight and no grain leakage is allowed.
4.3.11
4.3.12 The engine shall start smoothly and stably, and shut down completely and reliably; it shall be able to start smoothly when the ambient temperature is not lower than -5°C. The clutches of each system of the harvester must be engaged smoothly and reliably, and separated completely. 4.3.13
The maximum driving speed of the self-propelled harvester shall be less than or equal to 20km/h; that of the towed harvester shall be less than or equal to 15km/h. The travel brake device and the parking brake device must ensure that the harvester can stop reliably after braking. 4.3.15
The gearbox shall be flexible in shifting and reliable in operation, and there shall be no random gearing or gear disengagement; the cleanliness of the gearbox (or transmission box) shall not exceed 4.3.16
15mg/kW.
4.3.17 The display signals of instruments and indicators shall be clear and accurate, and the switches shall work reliably; the electrical equipment shall comply with the provisions of ZBT35001. 4.3.18 The harvester shall be equipped with a light and sound signal system to monitor the machine during the working process and the main working parts under the extreme working conditions as required.
The self-propelled harvester shall be equipped with lighting equipment that can meet the needs of the operation and meet the safety requirements. The self-propelled harvester shall be equipped with a fire extinguisher and shall be installed in a position that is easy to remove and unload. · The coating of the harvester shall comply with the provisions of NJ/Z3. -4.3.21
The structure of the self-propelled harvester shall ensure that it can be operated by one driver and is convenient and comfortable to drive. 4.3.22
The operation symbols of the harvester shall be fixed near the corresponding operating device, and the operation symbols shall comply with the provisions of GB4269.14269.2. 4.3.24 The adjustment, repair and maintenance of the harvester shall be convenient. The accessories, spare parts and tools supplied with the product shall be complete. 4.3.25 The general safety technical requirements of harvesters shall comply with the provisions of GB10395.1; special safety technical requirements shall be specified according to the characteristics of specific models. Safety signs shall comply with the provisions of GB10396. 4.3.26 If the user uses and maintains the machine in accordance with the instruction manual provided by the manufacturer, the warranty period is one year (if it does not catch up with the harvest season, it can be extended for six months). During the warranty period, if the machine is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall replace or repair it for the user free of charge (except for wearing parts). 5 Factory test and inspection rules
5.1 The assembled harvester rotary working parts shall be tested for 10 minutes at the specified working speed. 5.2 After each harvester is assembled and passes the final inspection by the technical inspection department of the manufacturer, it shall be tested for 2 hours at rated speed. The test shall meet the following requirements:
Starting is smooth and convenient, and the engine is completely and reliably turned off a.
b. Each control system is flexible, accurate and reliable. The adjustment range of each component shall meet the design requirements; the machine runs smoothly, without any jamming or abnormal sound; c
Connectors and fasteners shall not be loose;
JB/T6680-93
Gearbox, bearing seat and bearing parts are not allowed to have serious heating phenomenon, and the temperature rise shall not exceed 25℃; e.
f. Oil leakage, water leakage and air leakage are not allowed.
5.3 Each self-propelled harvester shall be tested for walking. The test shall be carried out under various gears, and the test results shall comply with the provisions of Articles 4.3.11 to 4.3.17 of this standard, and the test time shall comply with the provisions of product technical conditions. 5.4 If the above requirements are not met during the test, the test should be stopped immediately and the fault should be eliminated before additional tests are carried out. Each harvester should be inspected and qualified by the quality inspection department of the manufacturer and issued a certificate of conformity before it can leave the factory. 5.5
Harvester withdrawal When the following situations occur, type inspection should be carried out in accordance with relevant standards: 5.6
Trial and type identification of new products or old products transferred to the factory for production; After formal production. If there are major changes in structure, process, and materials, which may affect product performance; During normal production, periodically or after accumulating a certain amount of output, an inspection should be carried out periodically, generally once every three years; c
When the product is stopped for a long time and production is resumed; When the factory inspection results are significantly different from the last type inspection; When the national quality supervision agency proposes a requirement for type inspection. 5.7 For harvesters delivered from the factory, the ordering unit has the right to conduct random inspections on the harvesters leaving the factory in accordance with the provisions of this standard. The random inspection rules and judgment methods shall be jointly agreed upon by the ordering unit and the manufacturer. 6 Marking, packaging, transportation and storage
6.1 Each harvester shall be marked with a product label in a conspicuous position in accordance with the provisions of GB/T13306, and the content shall include: a.
Manufacturer name;
Product model and name;
Product factory number;
Product factory date.
The lubrication points, transmission system, main adjustment points and precautions of the harvester shall be marked clearly. 6.2
6.3The registered trademark shall be fixed in a conspicuous position of each harvester. 6.4The packaging mark shall be marked in a conspicuous place of each package, and the content of the packaging mark shall include the product number, name, part number, quantity, weight, arrival station, departure station and date.
6.5 The harvester shall be complete after leaving the factory, and the accessories, spare parts, tools and parts that must be removed during transportation supplied with the machine shall be intact.
6.6 The random documents of the harvester include:
Packing list;
Product certificate of conformity;
Product instruction manual;
Product parts catalog.
The shipment of the harvester from the factory shall comply with the relevant regulations of the transportation department. It shall be ensured that the parts and components are not damaged under normal transportation conditions. 6.71
The storage of the harvester shall comply with the provisions of the relevant material and technical storage regulations. 6.8
Additional instructions:
This standard is proposed and managed by the China Agricultural Mechanization Science Research Institute of the Ministry of Machinery Industry. This standard was drafted by the China Agricultural Mechanization Science Research Institute and the Heilongjiang Agricultural Machinery Testing and Identification Station. The main drafters of this standard are Cao Hongguo, Geng Hong, Li Shaozeng and Wang Licheng. From the date of implementation of this standard, NJ173-79 "Technical Conditions for Corn Harvesters" will be invalid. 55
The clearance between the stem pulling roller and its grass cleaning knife and the rear lower feeding wheel and its grass cleaning knife shall not exceed 1.5mm. 4.3.6
The clearance between the moving knife and the fixed knife of the chopping drum shall not exceed 1mm, and it shall be uniform and consistent over the entire length when adjusted. 4.3.7
The clearance between the moving knife and the bottom shell plate of the chopping drum shall not exceed 3mm, and it shall be uniform and consistent over the entire length when adjusted. 4.3.8
All parts and components shall be firmly connected, and the bolts and nuts shall be tightened. The performance grade of fasteners in important parts is: bolts grade 8.8, nuts grade 8.
The engine of the self-propelled harvester shall comply with the provisions of GB1147; the tractor used in conjunction with it shall comply with the provisions of NJ80. The engine and hydraulic system of the self-propelled harvester shall not be allowed to leak oil, water or air: the closed parts of the harvester shall be tight, and grain leakage is not allowed.
4.3.12 The engine should start smoothly and stably, and shut down completely and reliably; it should start smoothly when the ambient temperature is not lower than -5℃. The clutches of each system of the harvester must be engaged smoothly and reliably, and separated completely. 4.3.13
The maximum driving speed of a self-propelled harvester should be less than or equal to 20km/h; that of a towed harvester should be less than or equal to 15km/h. The travel brake device and parking brake device must ensure that the harvester stops reliably after braking. 4.3.15
The gearbox should shift gears flexibly and work reliably, without random gear shifting and gear disengagement; the cleanliness of the gearbox (or transmission box) should not exceed 4.3.16
15mg/kW.
4.3.17 The display signals of instruments and indicators should be clear and accurate, and the switches should work reliably; the electrical equipment should comply with the provisions of ZBT35001. 4.3.18· Harvesters should be equipped with light and sound signal systems to monitor the working process of the machine and the main working parts under extreme working conditions as needed.
Self-propelled harvesters should be equipped with lighting equipment that can meet the needs of the operation and meet the safety requirements. Self-propelled harvesters should be equipped with fire extinguishers and should be installed in a position that is easy to remove and unload. · Harvester coating should comply with the provisions of NJ/Z3. -4.3.21
The structure of the self-propelled harvester should ensure that it can be operated by a single driver and is convenient and comfortable to drive. 4.3.22
The operation symbols of the harvester should be fixed near the corresponding operating device, and the operation symbols should comply with the provisions of GB4269.14269.2. 4.3.24 The adjustment, repair and maintenance of the harvester should be convenient. The accessories, spare parts and tools supplied with the product should be complete. 4.3.25 The general safety technical requirements of the harvester should comply with the provisions of GB10395.1; special safety technical r
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