This standard specifies the repair technical requirements and use conditions of the main parts and components of straw returners. This standard applies to the repair quality assessment of the main parts and components of the flail and hammer claw straw returners and the whole machine. NY/T 504-2002 Technical conditions for repair of straw returners NY/T504-2002 Standard download decompression password: www.bzxz.net

Agricultural Industry Standard of the People's Republic of China NY /T 504—2002 Repairing technical specifications for crop siraw reiurning-back-to-field machine 2002-0-04 Issued 2002-02-01 Implementation of the Ministry of Agriculture of the People's Republic of China NY/T 502-- 2002
This standard is proposed by the Department of Mechanization Management of the Ministry of Agriculture: This standard is not affiliated to the National Agricultural Machinery Standardization Technical Committee of the Agricultural Mechanization Office. The starting unit of this standard is: New Taipei Province Agricultural Machinery Maintenance and Service Center, the main drafters of this standard are Shi Fangzhen, Liu Yinzi, Ni Duling, Xie Xi, Zhang Anji, and Ju Hongxin, 1 Fan
Agricultural Industry Standard of the People's Republic of China
Technical conditions for repair of straw-relurning-hack-ta-field marhine
Repairing technical speeificutinns forerop stran relurning-hack-ta-field marhine This standard specifies the requirements for the repair technology of the machine owner and the use of multiple parts, NY/T 504-2002
This standard is applicable to the repair quality assessment of knife-type and melon-type straw-relurning machine parts, components and complete parts. 2 Reference standards
The following standards contain provisions that constitute or are the provisions of this standard through reference in this standard: semi-announced publication, the current edition is valid. All standards will be replaced by the latest editions. All parties using this standard should discuss the possibility of using the latest editions of the following standards: (1) 21S-988 Determination of the allowable balance of rigid lightweight products (GB3: 3951108 Agricultural machinery and machinery safety technical requirements Part 1 General provisions GB3951999 Agricultural and forestry tractors and machinery, safety signs and specifications for agricultural and forestry tractors and machinery, general provisions for safety signs and specifications for agricultural and forestry tractors and machinery JB/ 6681993 Technical conditions for crushing machine 3 Specifications
This standard is defined as follows.
3-1 Standard
Technical indicators to be achieved after repair: 3.2 Limit values ​​
The maximum value of the machine and its components before repair: 4. Technical conditions for repair
4.1 Frame
4.1.1 The plane tolerance of the side plate is 1.5m 4.1.2 The axial tolerance of the knife shaft on both sides is 1.5mm, and the limit is m4.1.3 The two plates and the cross frame should be vertical. The measurement tolerance of the case is 3mm, and the limit is 5mml. 4.1.5 The self-tolerance of the frame on the whole load is 2mm, and the limit is 13mm4.2 The frame is scrapped
Any unsuitable, 1 in the actual specification is reported in real time 4.3 Tool axis
4.3.1 The axis straightness tolerance is c.5mml. The limit is mm. The Ministry of Agriculture of the People's Republic of China approved 7002-07-01 for implementation in 20020°04
NY/T501?[M2
43.2 Figure 1nm acid limit fire rm
4.3.3 The axis straightness tolerance of the installation manual is 3 and the limit is 1,4.4
4.4. 1 piece
) use knife 1 part (the width of the blade is set to a limit of 0m] straight length [9 period limit 25
blade pin shaft twist back column dirty limit:
2.4.2 piece pin shop
increase the auxiliary outer diameter tolerance is.m degree loss forging, the piece pin shaft can be rotated lithium standard use. 4.5 sleep music group
4.5.1 carefully aid 5 use
4.5.2 pin: pin outer diameter tolerance is m reported limit depth is 2m4.6 fixed
fixed height instant root public coupon is 1.3mm. stock limit 4m4.7 inverter box
4.7.1 disease When the gear is installed, the tooth side distance should be 131r133mm1. The tooth surface should be connected to the printed length of not less than 60% of the length. The width of the ten teeth should be 10% of the gear box after installation. There should be no jamming and abnormality. 4.72 When the gear does not meet the following requirements, the average or relative speed shall be: NYT5D4-2002
tooth measurement (the auxiliary bearing is in the standard interval cumulative condition\ is am: the length of the adjacent two blood Li Ge spots is 4.8 steps
the ground shaft runout tolerance is 1mr. The limit is er:m. The coaxiality tolerance of the installed transfer bearing is mr: the limit is 1 mra.
4.9 Tensioner assembly
4.9.1 The standard weight of the plate on the axle is (1., the forging limit is 2:4.9.2 The tensioner is adjusted to the extreme double position. If it is still working, the triangle joint should be replaced. 10 Material matching
Village quality is included in the heat setting of TB5578-1993 Section 4. 4.11 Knife shaft assembly
The knife or chain and the shaft assembly limit should be carried out in accordance with the provisions of /T5739 Section Or flat gear test, flat gear quality grade is 616, limit is 15
4.12 Machine assembly
4.12.1 When installing the speed or the corresponding side plate, the slope is 1.5mm4.12.2 The circular runout tolerance of the driving pulley after installation is 0.8mm. The limit is 2mr, 4.12.3 The runout tolerance of the driving belt after installation is 0.:mm. The limit is 1.5mm. 4.12.4 For the standing rod return machine, the blade should be replaced in time. If the force exceeds the limit of 4.1 or the total force is >2%, the gear should be replaced. 4.12.5 Adjust the gear wheel until the transmission belt meets the standard. 1.12.6 The paint quality of the plate after the whole list should meet the current requirements of JB/15$73. 5.1 The performance of the whole machine shall comply with the provisions of J/T667R-13, No. 4, 5-? The main performance shall comply with the provisions of B166761937, No. 3: 6 Safety
6-1 Safety protection device
The safety and expansion prevention device of the machine after repair shall comply with the provisions of B10195.1: 62 Safety signs wwW.bzxz.Net
The safety signs of the machine after temporary repair shall comply with the provisions of B1335. 63. Trial operation
During the operation of the machine, it is strictly forbidden to stand. 7 Acceptance rules
Each machine after large compensation shall be subject to acceptance test according to the requirements of 13678-1993.1 set 5.3:
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