JB/T 10293—2001 This standard specifies the technical requirements, safety technical requirements, test methods, inspection rules, marking, packaging and storage of single-grain (precision) seeders. This standard applies to mechanical and pneumatic single-grain (precision) seeders. This standard is published for the first time. JB/T 10293-2001 Technical conditions for single-grain (precision) seeders JB/T10293-2001 Standard download decompression password: www.bzxz.net

ICS65.060.30
Machinery Industry Standard of the People's Republic of China
JB/T10293-2001
Single Seed Drill (Precision Drill)
Technical Conditions
Specifications of single seed drill (precision drill) Issued on 2001-06-22
China Machinery Industry Federation
2001-10-01 Implementation
JB/T10293—2001
Appendix A of this standard is the appendix of the standard.
This standard is proposed and managed by the National Technical Committee for Agricultural Machinery Standardization. The drafting units of this standard are: China Agricultural Mechanization Science Research Institute, Heilongjiang Bonong Machinery Co., Ltd., Tongliao Fuhua Agricultural Machinery Manufacturing Co., Ltd., and Wafangdian Precision Seeder Manufacturing Co., Ltd. Drafters of this standard: Liu Diansheng, Xu Qun, Zhu Shiqiang, Hao Kui, Guo Zhaofu. This standard is published for the first time.
1 Scope
Machinery Industry Standard of the People's Republic of China
Single Seed (Precision) Seeder
Technical Conditions
Specifications of single seed drill (predsion drill) JB/T10293—2001
This standard specifies the technical requirements, safety technical requirements, test methods, inspection rules, marking, packaging and storage of single seed (precision) seeders.
This standard applies to mechanical and pneumatic single seed (precision) seeders (referred to as precision seeders). 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 6991999
GB/T1173—1995
GB/T1243—1997
GB/T2828—1987
GB/T6973—1986
GB/T 9239—1988
GB/T9439—1988
GB/T9478—1988
GB10395.1—2001
GB 10395.9—1996
GB 10396—1999
GB/T13306—1991
JB/T5673—1991
YB/T5059—1993
3 Technical requirements
High-quality carbon structural steel
Casting aluminum alloy
Precision roller chains and sprockets for short pitch transmissionBatch inspectionCount sampling procedures and sampling tables (applicable to inspection of continuous batches)Single-grain (precision) seed drill test method
Rigid rotor balance qualityDetermination of allowable unbalanceGray cast iron parts
Grain drill test method Method
Safety technical requirements for agricultural and forestry tractors and machinery Part 1: General provisions Safety technical requirements for agricultural and forestry tractors and machinery Part 9: Seeding, planting and fertilizing machinery Safety signs and hazard graphics for agricultural and forestry tractors and machinery, lawn and gardening power machinery General provisions Signs
General technical conditions for painting agricultural and forestry tractors and machinery Low carbon steel cold-rolled steel strip
Precision seeders shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved through the prescribed procedures 3.2 Machine performance indicators
3.2.1 The seed breakage rate of the seed meter of the precision seeder shall comply with the indicators specified in Table 1. Approved by China Machinery Industry Federation on June 22, 2001, and implemented on October 1, 2001
Seed breakage rate
Note: Type I
JB/T10293—2001
Mechanical
Pneumatic
A mechanical single-seed (precision) seeder that sows graded seeds with a mechanical seed meter. Standard
Pneumatic single seed (precision) seeder for sowing graded and ungraded seeds with pneumatic seed metering device%
When the quality of seeds and land preparation meets the requirements of precision sowing agricultural technology, the operating performance indicators of precision seeders shall meet the requirements of Table 2.3.2.2
Grain spacing qualified index
Reseeding index
Missed seeding index
Qualified grain spacing variation coefficientbzxZ.net
Note: The operating speed shall be in accordance with the provisions of the instruction manual, ≤40
Seed grain spacing X
>10~20
>20~30
General speed range should take the median value. When conducting comparative tests on several seeders, the same operating speed can be used for the test. 3.2.3 When the moisture content of granular fertilizer does not exceed 12%, the moisture content of small crystal powder fertilizer does not exceed 2%, and the fertilizer discharge amount is 150~300kg/hmr, the fertilizer discharge performance shall meet the indicators specified in Table 3. Table 3
Coefficient of variation of consistency of fertilizer discharge in each row
Coefficient of variation of stability of total fertilizer discharge
3.2.4 When the land preparation quality meets the requirements of precision seeding agricultural technology, the qualified rate of seeding depth shall not be less than 80% (the seeding depth value required by local agriculture is h, and h soil lcm is the qualified seeding depth) 3.2.5 Precision seeders with fertilization mechanisms shall meet the requirements of seed and fertilizer application, and the thickness of the soil layer between seeds and fertilizers shall meet the distance indicators proposed by agricultural technology.
3.2.6 When precision seeders are operated with or without film, the rows should be straight, the row spacing should be consistent, and the maximum deviation of the row spacing within the same sowing width shall be ≤4am. 3.2.7 The reliability (effectiveness) of precision seeders shall not be less than 90%. 3.2.8 The average operation volume of precision seeders before the first failure: precision seeders equipped with tractors above 15kW shall not be less than 25hm?/m, and precision seeders equipped with tractors less than or equal to 15kW shall not be less than 20hm/m. 3.3 General Technical Requirements
3.3.1 The raw materials used for parts shall comply with the provisions of the national standards and industry standards required in the drawings. Material substitution is allowed, and the substitute materials shall maintain the original design performance.
3.3.2 Castings shall comply with the relevant provisions of GB/T9439, and shall not have cracks and other defects that reduce the strength of parts. The fitting parts shall not have defects such as sand holes, pores, shrinkage holes and slag inclusions. 2
JB/T10293—2001
3.3.3 Forgings shall not have defects such as interlayers, folds, cracks, forging scratches, scars and slag inclusions. 3.3.4 Stampings shall not have burrs, cracks and obvious incomplete wrinkles. 3.3.5 Welded parts shall be firm and shall not have defects such as slag inclusions, undercuts, burn-throughs, cracks and incomplete penetration. The deformation after welding shall be corrected to meet the requirements of the drawings.
3.3.6 The rubber corrugated seed and fertilizer delivery pipes should be able to work normally in the temperature range of 0~40℃, and the cold brittle temperature should not be higher than -30℃. The steel belt spiral seed and fertilizer delivery pipes should be made of 08F low carbon steel cold rolled steel belt specified in YB/T5059. After processing, heat treatment must be performed to eliminate internal stress. The free length should be stretched by 30%, and the permanent deformation after three consecutive stretches should not exceed 1% of the free length. 3.3.7 The precision roller chain and sprocket for short pitch transmission should comply with the provisions of GB/T1243. 3.3.8 The flatness error of the type I air suction seeding disc should not exceed 0.2mm3.3.9 Type II seeding device body: aluminum alloy products should comply with the provisions of GB/T1173. 3.3.10 Type IⅡ fan impellers that have not been statically balanced shall not be installed and used. The balance quality grade of the fan impeller that has been balanced shall comply with the G6.3 grade specified in GB/T9239.
3.3.11 Type II fan impeller (aluminum casting) The inner wall surface roughness shall not be lower than that specified in GB/T131. 3.3.12 Type II airway and nozzle inner wall shall be smooth, without edges and corners and bumps. 3.3.13 Type II gas transmission corrugated hose shall not leak, the corrugated ribs of the air pipe shall not be disconnected, and the air pipe mouth shall not be broken. 3.3.14 The trencher is made of 65Mn steel specified in GB/T699, and the heat treatment hardness of the working surface of the plowshare and shovel tip is 40-50HRC; the heat treatment hardness of the disc is 35~45HRC: the disc cutting edge is allowed to be defective, but the depth shall not exceed 2mm, the length shall not exceed 15mm, and the number shall not exceed three; the flatness error of the disc shall not exceed 1.5mm. 3.4 Technical requirements for main components
3.4.1 The frame should be calibrated after welding. The parallelism between the beams and the difference in the diagonal dimensions of the frame should comply with the provisions of Table 4. Table 4
Length of beams
Difference in parallelism and dimensions
3.4.2 The joints between the seed box and the fertilizer box should not leak seeds or fertilizers. The local gap between the seed meter and fertilizer meter components and the bottom plate of the box should not exceed mm. 3.4.3. Seeder assembly: The parts should be clean, and the assembly should be flexible and reliable. There should be no stuck belt phenomenon. The fasteners should be firmly connected, the seed cleaner should be flexible to adjust, and the lubricating parts should be filled with lubricating oil. 3.4.4 When no fertilizer is loaded, a single set of fertilizer dispensing devices should rotate easily. When there are multiple sets of fertilizer dispensing devices, the fertilizer dispensing shaft should rotate flexibly under the action of a torque of 40N·m.
3.4.5 The working surface and matching surface of the shovel tip of the sliding knife type, hoe shovel type and other furrow openers should be smooth and free of defects. 3.4.6 The double disc type furrow opener should rotate flexibly. When the two discs rotate relative to each other, the gap between the disc cutting edges at the intersection of the discs should not exceed 2mm. In some cases, the gap is allowed to increase to 5mm when the discs rotate. 3.4.7 After the I-type fan is assembled, there should be no air leakage, and a test run should be carried out. The operating speed should be based on the designed operating speed of the fan, the operating time should be no less than 30min, and the bearing temperature rise should not be higher than 25℃. 3.4.8 After installation, the II-type fan can rotate flexibly, the total runout of the impeller is no more than 0.5mm, and there should be no friction between the impeller and the suction nozzle. 3
3.5 Technical requirements for general assembly
JB/T10293—2001
3.5.1 All parts must be inspected and qualified, and purchased parts and cooperative parts must have a certificate of conformity before assembly. 3.5.2 After the machine is assembled, the exposed processing surfaces and friction surfaces of the parts should be coated with anti-rust oil. 3.5.3 The active and passive cylindrical gears and sprockets on the same plane drive smoothly and do not drop the chain during operation. 3.5.4 When the precision seed drill opener is in transportation or working state, the seed and fertilizer delivery pipes should not be stuck or disengaged. 3.5.5 The depth adjustment mechanism of the precision seed drill should be convenient, flexible and reliable. 3.5.6
The end face circular runout and radial circular runout of the ground wheel and the supporting wheel should comply with the provisions of Table 5. Table 5
End face circular runout
Radial circular runout
The transportation clearance of precision seed drill shall comply with the provisions of Table 6. 3.5.7
Transportation clearance
3.6 Paint and appearance quality
Traction type
≥150
≥120
≥120
Suspended type
≥200
Matched with tractors above 15kW
Matched with tractors ≤15kW
Matched with walk-behind tractors
3.6.1 Before painting the precision seed drill, the surface rust, oil stains, sand, dirt, welding slag and dust should be removed. 3.6.2 The painting of precision seed drills shall comply with the provisions of JB/T5673. The paint coating shall use ordinary weather-resistant coating TQ-2-2-DM, and the fertilizer box shall use fertilizer-resistant coating TQ-3-F-DM for anti-corrosion treatment. 3.6.3 The inner wall of the seed box, the inner wall of the metal seed meter, the cast iron seed wheel and the blocking sleeve are allowed to be painted with primer only without topcoat; the furrow opener, builder, foot pedal, soil-recovering device, ground wheel and marker disc and other parts can be painted with black topcoat without primer. 3.6.4 The appearance of the precision seed drill shall be neat and tidy, and shall not have defects such as rust and bruises. The paint surface shall be flat, evenly hooked and smooth. 4 Safety and technical requirements
The safety and technical requirements of precision seed drills shall comply with the provisions of GB10395.1 and GB10395.9, and danger warning signs shall be marked on the machine. Its safety signs shall comply with the provisions of GB1039%. 4.2 Exposed gears and sprocket transmission devices that are dangerous to operators should have reliable protective covers. The protective covers should be easy to maintain, service and observe the machine. The paint color of the protective covers should be different from the paint color of the whole seeder. 4.3 Precision seeders that require someone to operate on them during work should be equipped with non-slip foot pedals with a width of not less than 300mm and corresponding handrails. The length of the handrails and foot pedals is suitable for staff operation and adapted to the machine. . 4.4 There should be a fixing device when the cover of the seed and fertilizer box is opened, and it should not open automatically due to vibration, bumps and wind during operation. 4.5 The track marker must be locked during road transportation. 4.6 When the precision seeder is parked alone, it should be able to remain stable and safe. 4
5 Test methods and inspection rules
JB/T10293—2001
5.1 The test method of precision seeder shall comply with the provisions of GB/T6973. The reliability (effectiveness) of precision seed drills shall be measured in accordance with the provisions of GB/T9478. The average workload before the first failure shall be measured in accordance with the provisions of Appendix A (Appendix to the standard). 5.2 The precision seed drill shall be tested for idling. The speed of the ground wheel during operation is equivalent to the normal operating speed, and the operation time is 5 to 10 minutes. Operate the lifting mechanism to raise and lower the furrow opener three times, and check the transmission and lifting connection parts. All components must not be blocked, deformed or loose. 5.3 Precision seed drills must be inspected and qualified by the quality inspection department of the manufacturer, and must be accompanied by a product quality certificate before they can leave the factory. 5.4 The ordering unit has the right to randomly inspect the product quality in accordance with the requirements of this standard. The sampling plan and the qualified quality level (AQL) shall be in accordance with the provisions of GB/T2828, and can also be determined by negotiation between the supply and demand parties. 5.5 Random sampling method is adopted to randomly select products produced by the manufacturer in the past six months (the inventory of complete machines should be no less than 16 units when sampling in the factory, and this limit is not applicable to sampling in the sales department). The samples drawn should be qualified products produced by the manufacturer, and 2 complete machine samples are drawn.
During the inspection and acceptance of precision seed drills, the defects are divided into three categories: Class A (major defects), Class B (serious defects) and Class C (general defects) according to the degree of impact of the product on use. The contents of the classified inspection items are shown in Table 7, and the contents of the inspection and acceptance results are shown in Table 8. In the table, AQL is the qualified quality level, Ac is the qualified judgment number, and Re is the unqualified judgment number. Table 7
Safety requirements
Average workload before first failure
Qualified index of grain spacing
Seed breakage rate
Qualified rate of sowing depth
Missed sowing index
Reseeding index
Coefficient of variation of qualified grain spacing
Inspection items
Coefficient of variation of consistency of fertilizer discharge in each row
Coefficient of variation of stability of total fertilizer discharge
Blower balance quality
Appearance quality of paint
Coating thickness
Coating adhesion
Hardness of opener material
Gap at intersection of disc opener|| tt||Roughness of the blade of the furrow opener (except the disc furrow opener) Quality of the frame welding Parallelism and diagonal size difference between the seed and fertilizer box bottom plate joints, fertilizer transportation gap
Axial offset of the main and passive gears and sprockets Quality of rubber bellows and steel belt spiral coils Quality of gas transmission corrugated hoses
Qualified products
Item category
Number of items
Inspection level
Sample size
JB/T10293—2001
Table 8 Inspection and acceptance result judgment
When the precision seed drill leaves the factory, it should be equipped with spare parts, accessories and special tools specified in the manual. 5.7
5.8If the user complies with the provisions of the manufacturer's instruction manual, within one year from the date of delivery, if the product cannot work normally due to quality problems, the manufacturer shall be responsible for repair, replacement and refund (except for normal wear of wearing parts and spare parts). 6 Marking, packaging and storage
6.1 The precision seed drill should have a product label fixed in a conspicuous position. The label should comply with the provisions of GB/T13306 and indicate the following: a) Product model and name;
b) Main technical parameters:
c) Product trademark:
d) Manufacturer name and address;
e) Manufacturing date:
f) Factory number.
6.2 The precision seed drill should be marked with the sign "Do not go backwards when sowing" in a conspicuous position. 6.3 For precision seed drills shipped from the factory in packaging boxes, the text and markings on the box surface should be clear, neat and durable. 6.4 Precision seed drills can be shipped from the factory in general assembly or component packaging. The component packaging should be firm and reliable when shipped from the factory, and each component can be assembled without any trimming. Parts, accessories, spare parts and random special tools must be packed in wooden boxes or packaging bags. 6.5 When the precision seed drill leaves the factory, the accompanying technical documents shall be packed in waterproof bags, including: a) Packing list:
b) Product quality certificate;
c) Product instruction manual:
d) Three-guarantee service card:
e) Implementation standard code.
6.6 The product should be stored in a dry, ventilated room without corrosive gases. When stored outdoors, measures should be taken to prevent rain, moisture and collision. 6
A1 General
JB/T10293—2001
Appendix A
(Appendix to the standard)
Test method for reliability assessment of precision seed drill products A1.1 Quantitative on-site reliability test is conducted on products within the warranty period. A1.2 Random sampling method is used to select no less than 2 products produced in the past year for on-site reliability test. A1.3 During the test, the operator must operate and maintain according to the product manual provided by the manufacturer. A1.4 The test personnel should carefully and accurately record the test of each seeder according to Table A1, and make statistics and summary according to Table A2. A2 Determination of the workload
A21 The workload is calculated according to the width of the precision seeder. A2.2 The test area is measured every day, and the measurement accuracy is 0.01hm2. A3 Principles for statistical judgment of faults
A31 The event that the whole machine, components or parts of the precision seeder lose the specified function under the specified conditions or its performance indicators exceed the qualified range is called a fault.
A32 Faults related to the essential failure of the precision seeder are all related faults, such as those that endanger the safety of operation, loss of function and damage to parts, which should be included in the calculation of the value of the reliability index. Minor faults that only cause inconvenience to the operator but do not affect the operation of the machine, and can be easily eliminated with the on-board tools during adjustment or daily maintenance are excluded. A33 Faults of precision seeders caused by external factors are all non-related faults. When calculating the numerical value of precision seed drill indicators, this type of failure should not be included. Specifically:
a) Failures caused by operation beyond the operating conditions specified in the machine manual and technical conditions; b) Failures caused by improper use, maintenance or malfunction of the operator; c) Failures caused by external accidental accidents.
A3.4 Calculation method of average workload before first failure The average workload before first failure refers to the average workload per unit width when the first failure occurs in each tested precision seed drill, calculated according to formula (A1):
MTTFF=Z+E
Where: MTTFF--average workload before first failure, hm2/m: --The number of seed drills that had their first failure during the test (when r=0, count as r=1): Zt. --The sum of the workload of each tested seed drill when the failure first occurred, hm: Zto --The sum of the workload of each seed drill that did not fail in the quantitative truncation test, hnr; B The working width of the seed drill, m.
The quantitative truncation test operation volume is:
For a seed drill matched with a tractor greater than 15kW, 40hm2/m;: (AD)
JB/T10293-2001
For a seed drill matched with a tractor less than or equal to 15kW, 33hmr/m. 5 The reliability (effectiveness) of precision seed drills shall be tested and determined in accordance with the provisions of GB/T9478. A3.5
Table A1 Statistical table of reliability test of precision seed drills Machine model and name:
Machine manufacturer:
Machine factory number:
Machine factory date:
Hitching type:
Sowing crop:
Sowing depth:
Working width:
Operation date
Operation time
Machine number
Operation volume
Fuel consumption Quantity
Operation volume before the first failure
Test unit:
Test location:
Test date:
Tractor model:
Operation speed (gear):
Seeding amount:
Row spacing:
Soil type:
Components, part numbers, parts names
Number of failures
Form, cause and elimination method
Record organizer:||tt ||Reliability test record summary table of precision seed drill Total operation time
Average operation volume before first failure MTTFF
Total fuel consumption
Record organizer:
Number of failures
Mechanical industry standards
Single seed (precision) seed drill
Technical conditions
JB/T10293—2001
Published and issued by the Mechanical Science Research Institute
Mechanical Science Research Institute Printing
(No. 2, Shouti South Road, Beijing, Postal Code 100044)*
Format 880×12301/16 Printing Sheet 3/4 Word Count 18000First Edition January 2002
First Printing January 2002
Print Quantity 1-500
Price 1200 Yuan
No. 2001-167
Mechanical Industry Standard Service Network: http:/AvwwJB.ac.cn
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