This standard specifies the test technical indicators of drive axles for construction machinery. This standard applies to drive axles for wheeled construction machinery such as loaders, cranes, excavators and scrapers. JB/T 5927-1991 Test Technical Indicators for Drive Axles for Construction Machinery JB/T5927-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T5927-1991
Engineering Machinery Drive Axle
Published on December 17, 1991
Test Technical Indicators
Implemented on July 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
Engineering Machinery Drive Axle
1 Subject Content and Scope of Application
Test Technical Indicators
This Standard The standard specifies the test technical indicators of engineering machinery drive axles. This standard applies to drive axles for wheeled engineering machinery such as loaders, cranes, excavators and scrapers. 2 Reference standards
JB/T5928 Engineering machinery drive axles
JB/T5929 Engineering machinery drive axles
3 Drive axle test technical indicators
Bench test method
Reliability test method
3.1 Drive axle on-site reliability test technical indicators 3.1.1 The average trouble-free working time is not less than 300h. 3.1.2 The effectiveness is not less than 85%.
3.2 Drive axle assembly static torsion test technical indicators Applicable to the drive axle of the full-floating half-axle.
3.2.1 The weakest part of the drive axle assembly static torsion test is the half-axle. If it is not the half-axle, the reason needs to be found out. 3.2.2 The static torsional strength safety factor of the drive axle assembly is calculated according to formula (1): S
Wherein: S——static torsional strength safety factor; T-static torsional fracture torque, N·m;
T,-calculated torque, N·m.
The static torsional strength safety factor S of the drive axle assembly shall not be less than 1.8. 3.3 Technical indicators of the vertical bending stiffness test of the drive axle housing T
When loaded with 3 times the rated bridge load, the elastic deformation per meter of wheelbase shall not exceed 1.5mm. 3.4 Technical indicators of vertical bending static strength test of drive axle housing The safety factor of vertical bending failure (fracture or severe plastic deformation) of drive axle housing is calculated according to formula (2): S.
Wherein: S Safety factor of vertical bending failure of drive axle housing: P-vertical bending failure load of drive axle housing, kN Approved by the Ministry of Machinery and Electronics Industry on December 17, 1991 P
JB/T5927-1991
Implementation on July 1, 1992
Rated bridge load, kN.
JB/T5927-1991
Safety factor of vertical bending failure of drive axle housing S. Not less than 6. 3.5 Technical indicators of vertical bending fatigue test of drive axle housing 3.5.1 Bare beam axle housing
The minimum fatigue life of the test sample is not less than 2.5×10° times. 3.5.2 The minimum fatigue life of the test sample of the bridge housing with accessories welded
is not less than 2.0×10° times. 6 Technical indicators of the rigidity test of bevel gears of drive axle assembly 3.6
According to the test calculation torque T, when loading, the displacement of the driving and driven bevel gears in each direction and their relative displacement shall be used as the technical indicators of the rigidity test of bevel gears. The relative displacement in each direction shall not exceed the technical indicators listed in the following table. Table
Displacement category
Driving gear
Driven bevel gear
Relative value
Note: X-
-Axial displacement along the driving gear;
Y-Axial displacement along the driven gear;
Z-Displacement perpendicular to the X and Y directions.
Technical indicators of fatigue test of gears of drive axle assembly
The equivalent life cycle number Ncp converted to actual work is used as the technical indicators of fatigue test of gears of drive axle. Bending strength Nc is not less than 1.0×10° times; contact strength NcpR is not less than 1.0×10° times, 3.8 Technical indicators of half-axle torsional fatigue test
The minimum life of the test sample is not less than 1.5×10° times. 3.9 Technical indicators of noise test of drive axle main reducer The noise of the main reducer is not more than 88dB(A).
3.10 Technical indicators of noise test of drive axle assembly The no-load noise of the drive axle assembly shall meet the following indicators: a.
For rated bridge load less than 125kN, the noise is less than 80dB(A); for rated bridge load between 125 and 250kN, the noise is less than 85dBA); for rated bridge load greater than 250 to 500kN, the noise is less than 95dB(A). Additional remarks:
This standard is proposed and managed by Tianjin Engineering Machinery Research Institute of the Ministry of Machinery and Electronics Industry. This standard is drafted by Tianjin Engineering Machinery Research Institute of the Ministry of Machinery and Electronics Industry. The main drafter of this standard is Liu Limin.
People's Republic of China
Mechanical Industry Standard
Engineering Machinery Drive Axle
Qiao Test Technical Indicators
JB/T 5927 - 1991
Published and issued by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, BeijingbZxz.net
Postal Code 100044)
Format 880×1230
Print Sheet 3/8
Word Count 4,000
First Edition December 1991
First Printing December 1991
Print Quantity 1-500
Price 10.00 Yuan
Mechanical Industry Standard Service Network: http://www.JB.ac.cn1661 - 6 /
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