Static rigidity and static strength testing system of automobile axle casing

Abstract

A static rigidity and static strength testing system of an automobile axle casing comprises a displacement sensor. The output end of the displacement sensor is connected with a computer through a concentrator, the displacement sensor is arranged at the corresponding measurement position of the axle casing through a displacement sensor installation support, a strain gauge is bonded to the position of the axle casing where stress is large, the strain gauge is connected with the input end of a strain measuring instrument, and the output end of the strain measuring instrument is connected with the computer. Test software is configured in the computer. In test, the displacement sensor measures displacement quantity of corresponding measurement points of the axle casing under control of the test software, the displacement quantity is transmitted to the computer through a data line and the concentrator, and manual errors caused by manual reading are avoided. Simultaneously, the strain measuring instrument collects variation of strain bridge circuit voltage to obtain a strain value, strain data are transmitted to the computer through a strain measuring instrument cable, displacement measurement and strain measurement are finished in one system, test complex degree is reduced, and the static rigidity and static strength testing system is convenient to operate.

Description

technical field [0001] The invention relates to the technical field of auto parts testing, in particular to a static stiffness and static strength testing system for an automobile axle housing. Background technique [0002] The axle plays an important role in delivering power and bearing loads in the working process of the car. The axle housing is the main part of the axle, and its static stiffness and static strength reflect the performance of the axle housing in the working process. Therefore, in the development and design process of the axle, it is necessary to test the static stiffness and static strength of the axle housing. [0003] Static stiffness and static strength measurements of axle housings involve two types of measurands: displacement and strain. Displacement measurement is to measure the displacement of several points on the axle housing when the axle housing is loaded, and draw the deflection line of the axle housing. At present, the commonly used measure...

AI Technical Summary

Problems solved by technology

In the existing measurement method, by manually reading the value of the dial indicator and drawing the deflection curve of the axle housing, the workload is heavy and it is easy to cause human error; at the same time, the displacement measurement system and the stress measurement system are completely independent, and the experimenter needs to measure the and processing two types of data, labor-intensive and inconvenient to operate

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