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Method for testing low friction loss of drive axle speed reducer

A technology of bridge reducer and test method, which is applied in the testing of machine/structural components, testing of mechanical components, instruments, etc., can solve the problem of low friction loss of the reducer without a separate bench test method and so on.

Pending Publication Date: 2021-09-03
DONGFENG AUTOMOBILE COMPANY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the transmission efficiency bench test of the drive axle can only comprehensively measure the low friction loss in the above-mentioned reducer and the torque loss caused by the gear transmission in the reducer, but there is no separate bench test for the low friction loss in the reducer method

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  • Method for testing low friction loss of drive axle speed reducer
  • Method for testing low friction loss of drive axle speed reducer
  • Method for testing low friction loss of drive axle speed reducer

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0030] As shown in the figure, choose 6x4 tractor (GVW49T), use 469 drive axles and self-made test stand 4, carry out the test method of the low friction loss of drive axle reducer of the present invention, concrete test procedure is as follows:

[0031] a. First, install the drive axle test sample 1 on the test bench 4, and connect the transmission shaft 3 between the drive axle test sample 1 and the test bench 4, so that the reducer at the front end of the drive axle test sample 1 axle housing 11 axes, 4 power axes of the test bench and 3 axes of the transmission shaft, the three axes are coaxial and arranged horizontally. At the same time, ensure that the output end of the drive axle test sample 1 is suspended, and the test bench 4 is not loaded on the output end of the drive axle test sample 1.

[0032] b. The test bench 4 rotates the reduc...

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Abstract

The invention discloses a method for testing low friction loss of a drive axle speed reducer. The method comprises the following test steps that firstly, a drive axle test sample piece is installed on a test bench, a transmission shaft is connected between the drive axle test sample piece and the test bench, and the axis of a speed reducer at the front end of an axle housing of the drive axle test sample piece, the power axis of the test bench and the axis of the transmission shaft are coaxial and horizontally arranged; in addition, it is ensured that the output end of the drive axle test sample is suspended, and the test bench does not load the output end of the drive axle test sample; the test bench enables a speed reducer at the front end of an axle housing of a drive axle test sample to rotate according to different input rotating speeds through a transmission shaft, when the oil temperature of lubricating oil exceeds 80 DEG C, a cooling device is started, the test oil temperature is controlled within 80 DEG C + / -2 DEG C, and the input rotating speed and the corresponding derivative torque of the drive axle test sample at the same moment at each vehicle speed are recorded. The low friction loss value obtained by the test method is more accurate than that obtained by masta calculation and CAE simulation.

Description

technical field [0001] The invention relates to the technical field of drive axles used in light-duty, medium-duty and heavy-duty conventional power trucks, in particular to a test method for low friction loss of a drive axle reducer. Background technique [0002] In response to the increasingly higher requirements for truck fuel-saving performance, the drive axle is a key sub-assembly of the truck powertrain, and its torque loss during the power transmission process has attracted more and more attention. The drive axles used in light, medium and heavy conventional power trucks are composed of reducers, axle housings, brakes, hubs and half shafts. The torque loss of the drive axle mainly comes from two aspects: one is the low friction loss in the reducer, including: the low friction loss caused by the friction of the bearing and the oil seal and the low friction loss caused by the stirring resistance of the gear oil; the other is the Torque loss due to gear transmission in ...

Claims

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Application Information

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IPC IPC(8): G01M13/025
CPCG01M13/025
Inventor 蒋宏伟白清慧常宗芳彭毅王波邝琦刘城尹德龙王庆伍江欢帅春桃黄建国张磊黄婧黎志强安超凡
Owner DONGFENG AUTOMOBILE COMPANY
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