JB/T 8582.3—2001 This standard is a revision and merger of JB/T 8553—1997 "Technical Conditions for Transmissions of Four-wheeled Agricultural Transport Vehicles" and JB/T 50107—1998 "Reliability Assessment Test Specifications for Mechanical Transmissions of Four-wheeled Agricultural Transport Vehicles". During the revision, the technical requirements for mechanical transmissions of three-wheeled agricultural transport vehicles were added; the test methods for various technical requirements were added, adjusted and specified in view of the characteristics of agricultural transport vehicles. This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of transmissions for agricultural transport vehicles. This standard is applicable to mechanical transmissions of three-wheeled and four-wheeled agricultural transport vehicles (excluding transmissions of agricultural transport vehicles connected to the rear axle). JB/T 8553—1997 was first issued in April 1997; JB/T 50107—1998 was first issued in March 1998. JB/T 8582.3-2001 Mechanical transmission for agricultural transport vehicles JB/T8582.3-2001 Standard download decompression password: www.bzxz.net

ICS43.160
Machinery Industry Standard of the People's Republic of China
JB/T8582.3-2001
Agricultural vehiclesMechanical transmissions2001-06-04Promulgated
China Machinery Industry Federation
Implementation on 2001-10-01
JB/T85823—2001
This standard is a revision of JB/T8553—1997 "Technical conditions for transmissions for four-wheeled agricultural vehicles" and JB/T50107—1998 "Reliability assessment test specifications for mechanical transmissions for four-wheeled agricultural vehicles". Compared with the original standard, the main technical changes of this standard are as follows: 1. Added technical requirements for mechanical transmissions of three-wheeled agricultural transport vehicles (excluding transmissions of agricultural transport vehicles connected with rear axles); 1. Added life indicators and test methods for synchronizers of transmissions of four-wheeled agricultural transport vehicles; 1. Adjusted fatigue life evaluation indicators of transmissions of four-wheeled agricultural transport vehicles; 1. Specifically specified test methods for various technical requirements in view of the characteristics of agricultural transport vehicles. This standard replaces JB/T8553-1997 and JB/T50107-1998 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Agricultural Transport Vehicles. Drafting units of this standard: Jilin University of Technology, Changchun Gear Factory of FAW Car Co., Ltd., Harbin Transmission Factory of China First Automobile Group, Changzhou Feitian Group Corporation (Changzhou Gear Factory). Main drafters of this standard: Min Haitao, Wang Zhihao, Ji Xiaoxia, Wang Mingcheng, Huang Lizhen. This standard was first issued in April 1997, and this is the first revision. 1 Scope
Machinery Industry Standard of the People's Republic of China
Agricultural Transport Vehicles
Mechanical Transmissions
Agricultural vehicles Mechanical transmissions JB/T8582.3—2001
Replaces JB/T85531997
JB/T 501071998
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of transmissions for agricultural transport vehicles. This standard applies to mechanical transmissions for three-wheeled and four-wheeled agricultural transport vehicles (excluding transmissions for agricultural transport vehicles connected to the rear axle) 2
Cited 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 2828—1987
JB/T5673—1991
QC/T5721999
3 Symbols
Counting sampling procedures and sampling tables for batch inspection (applicable to inspection of continuous batches)General technical conditions for painting of agricultural and forestry tractors and implementsWorking guidelines for determination of automobile cleanliness
The symbols and names used in this standard are as specified in Table 1. Table 1
Input speed of the first shaft of the transmission
The ratio of the speed of the engine with maximum torque matched by the transmission to the value of 1 (1450r/min can be taken when the limit is close to or less than 1450r/min)Input speed of the output shaft of the transmission
Input torque of the first shaft of the transmission
The maximum torque of the engine matched by the transmissionThe maximum torque allowed to be input by the transmission
Static torsional fracture torque of the transmission
Gear shifting force
Run-in time
Test oil temperature
Noise value
Static torsional strength reserve coefficient
Speed ​​coefficient
The reduction ratio from the engine to the clutch pulley is suitable for three-wheel and four-wheel agricultural transport vehicles with belt drive in the transmission system. For agricultural transport vehicles with other transmission forms, the value is taken as the low gear ratio of the two adjacent gears in the shift position
China Machinery Industry Federation 2001-06-04 Approved by
dB (A)
2001-10-01 Implementation
4 Technical requirements
4.1 Basic requirements
JB/T8582.3—2001
4.1.1 Products shall comply with the requirements of this standard and be manufactured according to product drawings and technical documents approved by the prescribed procedures. 4.1.2 All parts shall comply with the requirements of the corresponding standards and technical documents and may be assembled only after passing the inspection. 4.2 Assembly requirements
After the assembly is assembled, the gear position shall be accurate, without disordered gears or gear disengagement. 4.2.1
Each moving part of the assembly shall move flexibly without jamming or abnormal noise. 4.2.2
4.2.3 The fastening bolts and nuts of the assembly shall be tightened according to the tightening torque specified in the instruction manual or product drawings, and there shall be no looseness or missing. Grease or lubricant shall be applied to the oil seal cutting edge, bearing and friction pair according to the instruction manual or product drawings. 4.2.4
There shall be no leakage on the joint surfaces and oil seal cutting edge of the assembly. 4.2.6 The exposed non-machined surfaces of the assembly shall be coated with uniform and complete protective paint, and the paint coating shall comply with the provisions of TQ-4-SC-DM in JBT5673. The exposed machined surfaces shall be coated with anti-rust oil. 4.3 Cleanlinesswww.bzxz.net
The cleanliness of the assembly shall comply with the provisions of the enterprise standard without disassembly. 4.4 Shifting performance
The static shifting force of each gear converted to the transmission fork shaft shall not exceed 400N. 4.5 Noise
The maximum permissible sound pressure level of all types of transmission assemblies at n,-0.&nv shall comply with the provisions of Table 2. Table 2
Neutral and forward gear
Overdrive and reverse gear
4.6 Transmission efficiency
The transmission efficiency n of all types of transmission assemblies shall not be less than 96%. 4.7 Static torsional strength
The reserve coefficient of static torsional strength of the assembly shall not be less than 2.5. 4.8
Fatigue life
The fatigue life of the assembly shall comply with the provisions of Table 3. Table 3
Type of transmission
Two-shaft transmission
Intermediate shaft transmission
Three-speed transmission
Four-speed transmission
Fourth gear is direct gear transmission
Fifth gear is direct gear transmission
1 When the transmission has direct gear and overdrive gear, this gear position may not be tested. 2 Reverse gear test time 2 h.
Life index
Maximum allowable sound pressure level
Number of output shaft cycles
dB（A)
(×10）
JB/T8582.3—2001
Under the specified test conditions, after reaching the life index specified in Table 3, the output shaft cycles, the main parts of various transmissions should not be damaged: the gears should not have any of the following defects: tooth fracture, severe pitting on the tooth surface (one point of pitting occurs at any point, the area exceeds 4mm2, and the depth is 0.5mm).
4.9 Synchronizer life
After 10X104 gear shift tests, the synchronizer should not fail (that is, five consecutive impact sounds in any gear). 5 Test method
5.1 Gear shift force test (static)
5.1.1 Test equipment
Gear shift test bench, dynamometer.
5.1.2 Test procedure
a) Install the transmission on the test bench and connect the corresponding clutch driven plate assembly or equivalent inertia plate to the input shaft; b) Fill the transmission with lubricating oil according to the instructions or product drawings; c) Perform 100 gear shifting and running-in at the input shaft speed n=0.5n; d) Select a dynamometer with an appropriate range and make the force measurement direction consistent with the gear shift force action direction. When the input shaft and output shaft of the transmission are both stationary, each gear is repeatedly shifted three times, and the gear shift force is measured each time. 5.1.3 Data processing
Take the arithmetic average of the forces measured during the three gear shifting as the static gear shift force of the gear. 5.2 Noise test
5.2.1 Test device
A transmission device capable of rotating the transmission and a precision sound level meter. 5.2.2 Test conditions
5.2.2.1 Measurement location: The test should be carried out in a room with little background noise and reflected sound. No obstacles should be placed within 2m around the measurement site.
5.2.2.2 Test installation: The transmission under test should be installed according to the actual use conditions. The height of the axis line of the transmission input shaft from the ground should not be less than 400mm.
5.2.2.3 Speed: The input speed of the first shaft is n=0.8, and the direction of rotation is the same as the use condition. 5.2.2.4 Load: No load.
5.2.2.5 Lubrication: The lubricating oil and filling amount shall comply with the provisions of the instruction manual or product drawings, and the oil temperature shall be 60°C ± 5°C. 5.2.2.6 Measuring points: Four measuring points are arranged on the left, right, top and rear of the tested transmission. The heights of the three measuring points on the left, right and rear shall be the same as the axis of the transmission input shaft. The sound level meter arranged at each measuring point shall be aimed at the measured surface with zero incidence. The distance from the measuring point to the transmission housing is determined by the maximum axial dimension of the transmission housing outer profile, and the distances between the measuring points shall be in accordance with the provisions of Table 4. Table 4
Maximum axial dimension of transmission housing profile LL≤300
L> 300
Measurement distance
5.2.3 Test procedure
JB/T8582.32001
5.2.3.1 Measuring background noise: Before the transmission under test is installed on the test bench, sound level meters shall be arranged as specified in 5.2.2.6. The test bench shall be operated at the speed specified in 5.2.23. The noise measured by each sound level meter shall be the background noise. 5.2.3.2 Run-in the transmission under test according to the following specifications: a) The input torque of the first shaft of the transmission is determined according to formula (1): (1)
b) The input speed of the first shaft of the transmission is n, = nnc) The running-in time of each gear is t-2h;
d) The lubricating oil and the filling amount are determined according to the provisions of the instruction manual or product drawings: e The oil temperature during running-in is 80℃±10℃;
f After running-in, clean the transmission and replace the lubricating oil. 5.2.3.3 Install the running-in transmission on the test bench according to the provisions of 5.2.2.2, and arrange the sound level meter according to the provisions of 5.2.2.6. 5.2.3.4 Heat up the transmission so that the oil temperature meets the requirements. 5.2.3.5 Shift the transmission into each gear in turn, input the specified speed of the first shaft, and measure and record the noise value of each gear after the speed stabilizes. 5.2.3.6 Read and record the reading of the precision sound level meter using the "A weighting network". 5.2.4 Data processing
5.2.4.1 Correction of measured values
When the difference between the noise value measured at each measuring point of the tested transmission and the background noise value at that point is less than 3dB (A), the measured value is invalid. When it is equal to 3dB (A) to 10dB (A), it shall be corrected according to Table 5. Table 5
Sound level difference
Correction value
5.2.4.2 The noise of each gear of the transmission shall be the maximum reading among the four measuring points and the corrected value as the noise value of that gear. 5.3 Fatigue life test
5.3.1 Test device
Closed assembly test bench or open assembly test bench, torque and speed sensor, microcomputer torque meter. 5.3.2 Test conditions
dB (A)
5.3.2.1 Test installation: The support and fixing method of the tested transmission assembly on the test bench shall be safe and consistent with its installation and fixing method on the agricultural transport vehicle.
5.3.2.2 Test load: The input torque of the first shaft is determined according to formula (2), and its measurement error is not greater than ±1%T=Temax4
5.3.2.3 Test speed: The input speed of the first shaft is n,-n(2)
5.3.2.4 Lubricating oil: Add according to the brand and filling amount specified in the instruction manual or product drawing, and the oil temperature shall be controlled within the range of 80℃±10℃ or as specified in the instruction manual.
5.3.2.5 Test cycle number: The number of test output shaft cycles for each gear of the transmission shall comply with the provisions of Table 3 and 4.
5.3.3 Test procedure
JB/T8582.3-2001
5.3.3.1 Run-in the transmission under test according to the provisions of 5.2.3.2. 5.3.3.2 The transmission fatigue life test adopts the gear cycle test method, and the test is carried out from low gear to high gear, and 10 test cycles are repeated. The number of cycles of a test cycle for each gear is 1/10 of the total number of cycles. The direct gear and overdrive gear do not need to be tested. After completing 10 test cycles in the forward gear, run in reverse gear for 2 hours. 5.3.3.3 After completing the total number of cycles as specified in 5.3.2.4, check the damage of the transmission and make a record. 5.4 Static torsion strength test
5.4.1 Test equipment
Static torsion test bench, (XY, etc.) recorder, sensor, etc. 5.4.2 Test conditions
5.4.2.1 Install the transmission under test on the test bench according to the provisions of 5.3.2.1. The input and output ends of the transmission under test should only bear torque, and no additional bending moment is allowed. 5.4.2.2
5.4.2.3 During the test, the gears should be fully meshed, and the gear teeth should be loaded on the same working surface as the forward working condition of the agricultural transport vehicle. 5.4.2.4 The torque measurement error shall not exceed ±1%5.4.3 Test procedure
5.4.3.1 Install the transmission under test assembly and the instruments used according to the provisions of 5.4.2.1. 5.4.3.2 Adjust, calibrate and preheat the instruments used. 5.4.3.3 Put the transmission into the first gear except the direct gear, start the torque machine, and continue to slowly load until the transmission is damaged somewhere. Record the input torque and rotation angle of the first shaft when the damage occurs. If the gear teeth are broken, turn 120° and test again. Measure three points on one gear and take the average value of its failure torque. 5.4.4 Data processing
The static torsional strength reserve coefficient K is calculated according to formula (3): K,=T/Tmax
5.5 Synchronizer life test
5.5.1 Test device
Shift test bench or synchronizer test bench, sensor and oscilloscope, etc. 5.5.2 Test conditions
5.5.2.1 The input speed of the transmission output shaft is determined according to formula (4): n,=KnNia
K is determined according to Table 6.
5.5.2.2 The shift frequency is 10 times/min.
JB/T8582.32001
5.5.2.3 The brand and filling amount of lubricating oil shall be in accordance with the provisions of the instruction manual or product drawings. The test oil temperature is 60℃±5℃. 5.5.2.4 The gear engaging force shall be determined according to the calculated value of the synchronizer design. 5.5.2.5 The clutch driven disc assembly matched with the transmission is installed on the first shaft as the moment of inertia of the synchronizer part. 5.5.3 Test procedure
5.5.3.1 Before the formal test, the synchronizer shall be run-in for 300 gear shifts. The gear engaging force shall be in accordance with the provisions of 5.5.2.4. After the run-in, the lubricating oil shall be replaced. 5.5.3.2 Measure the axial dimension of the synchronizer (applicable to the synchronizer test bench). 5.5.3.3 The test shall be carried out by alternating gear shifts between two adjacent gears or by one-way gear shifting. The measurement parameters shall be monitored and the synchronizer failure shall be checked by an oscilloscope. The test shall be carried out until the synchronizer fails or the specified number of gear shifts is reached. The number of gear shifts shall be recorded. 5.6 Transmission efficiency test
5.6.1 Test equipment
Open transmission assembly test bench, torque and speed sensor, microcomputer torque meter, etc. 5.6.2 Test conditions
5.6.2.1 Test load: in accordance with the provisions of 5.3.2.1. 5.6.2.2 Test speed: in accordance with the provisions of 5.3.2.2. 5.6.2.3 Test oil temperature: 80℃±5℃, the oil temperature measurement deviation is not more than ±1℃. 5.6.2.4 Lubricating oil: the brand and filling amount of lubricating oil shall be in accordance with the provisions of the instruction manual or product drawings. 5.6.3 Test procedure
5.6.3.1 Run-in the test sample in accordance with the provisions of 5.2.3.2. 5.6.3.2 Refill the transmission with lubricating oil after running-in and install it correctly on the test bench. 5.6.3.3 Measure the transmission efficiency of each gear respectively under the specified test conditions. 5.6.4 Test result processing
The transmission efficiency of the transmission assembly is the arithmetic mean of the transmission efficiency of each gear. 5.7 Cleanliness
The cleanliness determination method shall be in accordance with the provisions of QC/T572. 6 Inspection rules
6.1 Factory inspection
Before each product leaves the factory, it must be inspected for the requirements specified in 4.2 and 4.4, and can only leave the factory after passing the inspection. 6.2 Type inspection
6.2.1 Type inspection shall be carried out in any of the following situations: a) Trial design 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; d) During mass production, regular spot checks and inspections; d) When production is resumed after a long period of suspension; e) When there is a significant difference between the factory inspection results and the previous type inspection results; e) When the national quality supervision agency proposes a type inspection requirement. 6
JB/T8582.3-2001
6.2.2 Type inspection items are all technical requirements specified in this standard. 6.2.36.2.1c) When type testing is carried out, the sampling inspection and judgment and disposal rules shall be in accordance with the provisions of GB/T2828. A normal inspection one-time sampling plan may be adopted, the inspection level is the special inspection level S-1, the inspection batch is the monthly (or daily) output or a single order batch, and the qualified quality level (AQL) is 6.5.
6.2.46.2.1 When conducting type tests under other conditions, randomly select test samples, and the sample quantity is specified as follows: 1~2 samples for each test of 4.2~4.6: no less than 3 samples for each test of 4.7~4.9. The test results shall all comply with the provisions of this standard. 6.3 User Acceptance
The ordering unit has the right to conduct random inspections on the products received. The test items, sampling plans, sampling inspections and judgment and disposal rules shall be in accordance with the provisions of this standard and GB/T2828, and shall be agreed upon by the supply and demand parties. 7 Marking, packaging, transportation and storage
7.1 Marking
The basic content of the marking shall at least include the product name, trademark, manufacturer name, product model and main parameters, manufacturing date, etc. 7.2 Packaging
The packaging box shall carry the product certificate, instruction manual, packing list and the specified spare parts and accessories. The packaging shall be firm and reliable. The outside of the packaging box should indicate: manufacturer name, address: product name, model; total mass: overall dimensions: product production date, etc. 7.3 Transportation
During transportation, it should be ensured that the product is not touched during transportation. 7.4 Storage
The product should be stored in a ventilated and dry place.
Mechanical Industry Standard
Mechanical Transmission for Agricultural Transport Vehicles
JB/T85823-2001
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 880X12301/16 Printing Sheet 3/4
4 Word Count 16000
First Edition in August 2001 First Printing in August 2001 Price 1200 Yuan
Print Quantity 1-500
2001-106
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn
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