This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements for grass pickers. This standard applies to roller grass pickers (hereinafter referred to as pickers). JB/T 5160-1991 Technical requirements for grass pickers JB/T5160-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T5160-1991
Grass Picker
Published on May 18, 1991
Technical Conditions
Implementation on January 1, 1992
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Mechanical Industry Standard of the People's Republic of China
Grass Picker
1 Subject Content and Scope of Application
Technical Conditions
JB/T 51601991
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements for grass pickers. This standard applies to roller-type grass pickers (hereinafter referred to as pickers). 2
Cited standards
GB5218
GB4357
GB9439
3Technical requirements
Silicon manganese spring steel wire
Carbon spring steel wire
Gray cast iron parts
Technical conditions for high-quality carbon structural steel
Carbon structural steel
Painting of agricultural machinery and implements
General technical requirements
The picker shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 3.1.1
The raw materials used for the picker must have a quality certificate, otherwise they should be inspected or tested and can only be used after passing the inspection. 3.1.2
Parts and components must be inspected and qualified, and purchased parts must have product certificates. Key purchased parts can only be assembled after passing the factory inspection.
The same model of pickers should be able to ensure the universality and interchangeability of parts and components. 3.1.5 The structure of the picker should ensure the convenient replacement of spring teeth and guard plates. 3.1.6 The picker should smoothly pick up the grass strips laid on the ground and send them to the next process without grass clamping or accumulation. The contact part of the picker spring teeth and forage grass can be made into a straight line, or it can be bent forward at an angle of 70~80mm. 3.1.7
3.1.8 The picker should be equipped with a floating device, and should be equipped with a vibration reduction or ground profiling device. 3.2 Technical performance requirements
3.2.1 The operating speed of the picker should be able to meet the requirements of the supporting host operation, and the rated operating speed should generally be between 5~12km/h. At rated speed, the picker should be able to pick up hay (water content 20%) with a weight of not less than 3kg per meter of grass strip or semi-dried forage (water content 55%) with a weight of not less than 4kg per meter of grass strip. 3.2.3 When the height of the grass strip is 5-15cm and the ground is flat, the picker's picking loss rate should not be greater than 1% (grass clippings less than 70mm in length are not counted in the picked up forage loss). 3.2.4 The average working time before the first failure is not less than 40h (the test result is valid for three years). 3.3 Technical requirements for main parts
3.3.1 The materials and heat treatment of the main parts of the picker shall comply with the provisions of Table 1. Approved by the Ministry of Machinery and Electronics Industry on May 18, 1991 and implemented on January 1, 1992
Directional cam plate
Pickup shaft
Spring tooth rod
JB/T 5160—1991
45# steel
There shall be no scratches on the bending part of the spring tooth.
Standard code
GB5218
GB4357
GB9439
GB 699
The straight tooth part of the spring tooth shall be perpendicular to the mounting surface, and the verticality tolerance is ±2°. The straightness tolerance of the spring tooth rod is 0.8mm/m.
The coaxiality tolerance of the journals at both ends of the pickup shaft is 0.12mm. Heat treatment requirements
44~48HRC
Tempering according to standard
Quenching and tempering or normalizing state
3.3.6 The contact part between the guard plate and the forage should be smooth, and there should be no defects such as protrusions, notches and burrs that affect the sliding of the forage. 3.4 Assembly technical requirements
After assembly, the pickup should run flexibly and smoothly without obstruction or friction. The distance between the spring teeth and the adjacent guard plates should be greater than 5mm, and the guard plate spacing size should meet the requirements of the drawing. The straightness tolerance of the end of each row of spring teeth: 7mm in the radial direction and 16mm in the circumferential direction. The spring tooth spacing tolerance is 16mm. The connection between the spring teeth and the spring tooth rod should be firm, and the anti-loosening device should be reliable. When the spring teeth are turned to any position, the directional roller and the directional cam plate slideway should be in uniform contact without sliding friction. 3.5 Safety requirements
3.5.1 The drive of the picker should adopt a one-way transmission device. 3.5.2
The transmission system of the picker used in areas with harsh ground conditions should be equipped with an overload safety protection device to prevent parts from being damaged in overload. 3.5.3 When the picker is connected to the forage harvesting machinery, a safety protection cover should be installed on the outside of the exposed rotating parts and transmission parts. Transmission parts that are not exposed and less than 0.6m away from the ground. A protective plate should be installed at the bottom. 3.6 Appearance quality requirements
3.6.1 Painting
The quality of the paint of the picker should comply with the provisions of TQ-1-BP or TQ-1-NP in Table 2 of NJ/Z3. 3.6.2 Parts made of thin steel plates shall not have cracks, obvious indentations, burrs and other defects. 4 Test methods
4.1 Factory test
The factory test of the picker can be carried out on a special test bench or assembled on the matching host and carried out at the same time. The factory test of the picker should be carried out at rated speed for 15 minutes.4.2 Type test
The test should be carried out on a flat ground with a stubble height of 5~15mm. The objects to be picked up are grass strips formed by fodder, wheat straw and other similar materials.
The type test of the picker shall be carried out in accordance with the relevant provisions of the test method of the matching host. 2
4.3 Assessment of the average working time before the first failure JB/T5160—1991
Record the time from the start of the picker operation to the occurrence of the first failure, h (bundle). Failures include:
a Damage to parts:
b. Performance indicators fall below the specified values ​​of this standard; c. The spring teeth cannot extend from the gap of the guard plate and slide on the inside of the guard plate. 5 Inspection rules
5.1 Each pickup leaving the factory must be inspected and qualified by the quality management department of the manufacturer, and be accompanied by a product quality certificate. The pickup and the matching host are manufactured in the same manufacturer, and when the complete machine leaves the factory, it can share a product certificate with the host. 5.2 Factory inspection
When leaving the factory, the pickup should be inspected one by one. 5.2.1
The results of the idling test should meet the requirements of 3.4.1, 3.4.4, and 3.4.5 of this standard. 5.2.3 Other items of factory inspection:
a. The main parts should meet the requirements of 3.3.2 and 3.3.6; b. The assembly should meet the requirements of 3.4.2 and 3.4.3; c. The safety requirements and appearance quality should meet the requirements of 3.5 and 3.6 (except for paint adhesion). If there are unqualified items in the factory inspection results, the item should be repaired and re-inspected. If the product still fails the re-inspection, the product shall be treated as unqualified in 5.2.4
.
5.3 Type inspection
5.3.1 Type inspection shall be carried out in any of the following cases: a. Trial design and identification of new products or old products transferred to the factory for production; b. After formal production, if there are major changes in structure, materials, and processes, which may affect product performance; c. During normal production, regular inspection shall be carried out every three years; d. When the product is resumed after being discontinued for two years; e. When the national quality supervision agency proposes a type inspection requirement. 5.3.2 Sampling rules
The inspection batch is 16~25 units, and 2 units are randomly selected for type inspection. 5.3.3 Type inspection items
Type inspection items include all items specified in Articles 3.2~3.6 of this standard. 5.3.4 Judgment rules
All indicators specified in Article 3.2 of this standard must be qualified, and 5 items of the remaining items are allowed to be unqualified; if the number of unqualified items is greater than 5, the batch of products will be treated as unqualified. 6 Marking, packaging, transportation and storagebzxZ.net
6.1 Marking
When the picker leaves the factory alone, a label should be placed in a conspicuous position, and the content includes: a. Product model and name;
JB/T 51601991
b. Main technical parameters of the product (pickup working width, spring tooth spacing, total mass); c. Factory date or factory number;
d. Manufacturer name.
If the picker and the matching host are manufactured in the same manufacturer and leave the factory as a complete machine, the picker does not need to be labeled separately. 6.2 Packaging
6.2.1 When the picker leaves the factory alone, it must be packed in a hard packing box. The picker should be fixed in the packing box, and the spring teeth must not touch the packing box during packaging. The specifications and packaging marks of the packing box should comply with the regulations of the transportation department. 6.2.2 Random spare parts and accessories should be packed separately and fixed in the packing box. 6.3 Random spare parts and accessories
a. 6 spring teeth;
b. 2 guard plates;
c. 10 sets of bolts, nuts and washers for installing spring teeth. Random documents include:
a. Product quality certificate;
b. Instruction manual;
c. Packing list;
d. User feedback survey form.
6.4 Storage
Storage of products shall comply with the following provisions:
a. Store indoors or in a place with rainproof facilities; b. The spring teeth shall not come into contact with other objects during storage; c. Unpackaged pickers shall not be placed overlapping. 7 Quality Assurance Period
If the user complies with the conditions specified in the instruction manual, within one year from the date of delivery, if parts are damaged or cannot operate normally due to poor manufacturing quality, the manufacturer shall repair or replace them free of charge. Additional Notes:
This standard was proposed and managed by the Hohhot Animal Husbandry Machinery Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Hohhot Animal Husbandry Machinery Research Institute of the Ministry of Machinery and Electronics Industry. The main drafter of this standard is Su Zhengfan.
People's Republic of China
Mechanical Industry Standard
Technical Conditions for Grass Pickers
JB/T51601991
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Postal Code 100044)
Format 880×1230
Sheet 1/2
Word Count 8,000
First Edition in September 1991
First Printing in September 1991
Print Quantity 1-500
Price 0.80 Yuan
Mechanical Industry Standard Service Network: http://www.JB.ac.cn1661_091/F
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