Automobile transmission shaft bending endurance test device and method

Abstract

The invention relates to the field of automobile part performance testing, in particular to an automobile transmission shaft bending endurance test device and method. The automobile transmission shaft bending endurance test method designed by the invention comprises the following steps of: S1, assembling an automobile transmission shaft bending endurance test device; S2, eliminating the initial unbalance amount of a to-be-tested transmission shaft; S3, installing a maximum allowable dynamic unbalance balancing weight on the automobile transmission shaft; and S4, carrying out an endurance test at the highest vehicle speed which can be reached when the whole vehicle runs on a flat road. According to the method, the initial unbalance amount of the to-be-tested transmission shaft is eliminated firstly, then the maximum allowable dynamic unbalance amount is loaded on the to-be-tested transmission shaft, and the influence of the bending torsional moment generated when the transmission shaft is in the maximum allowable dynamic unbalance amount on a transmission system is verified. The method provided by the invention is rigorous in design idea and scientific and reliable in data, and also has the characteristics of short test period and low test cost.

Description

technical field [0001] The invention relates to the field of performance testing of auto parts, in particular to an auto transmission shaft bending durability test device and a method thereof. Background technique [0002] The drive shaft is an important part of a light commercial vehicle. Due to errors in the manufacturing process of the drive shaft and deviations in the installation process, the center of mass of the drive shaft and the center of rotation of the drive shaft will not be aligned. produce dynamic imbalance. During the operation of the transmission shaft, the centrifugal force acts on the transmission shaft due to the dynamic imbalance. When the centrifugal force is large, the transmission shaft will be bent and deformed. It will cause serious failures such as tearing of the gearbox casing, flywheel casing, clutch casing and other related components. Therefore, the performance and reliability of the transmission shaft is very important. [0003] The convent...

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Problems solved by technology

[0004] In order to solve the problem that the existing road durability test cannot verify the influence of the bending and torsion of the transmission shaft at the maximum allowable dynamic unbalance on the vehicle, the purpose of the present invention is to provide an automobile transmi

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