Fatigue test device and method of sliding column assembly

Abstract

The invention aims to provide a fatigue test device and method of a sliding column assembly. Thereby, a real road test environment can be simulated, and the fatigue test accuracy of the sliding column assembly can be improved. The fatigue test device of the sliding column assembly comprises a hydraulic servo device, an L-shaped clamp, a support and a main clamp, the support comprises two vertical bars and a transverse bar, ends of the transverse bar are connected with the vertical bars, the main clamp is fixed on the transverse bar, the hydraulic servo device is located below the main clamp, and one bottom end of the L-shaped clamp is connected with the hydraulic servo device. The inclined angle of the sliding column assembly can be consistent with a real car assembling angle by the aid of the L-shaped clamp, a load stimulation end is disposed at the lower end of the sliding column assembly, which is consistent with a stimulation source of the sliding column assembly in a real car state, and thereby, the fatigue test accuracy of the sliding column assembly can be improved.

Description

technical field [0001] The invention belongs to the technical field of auto parts testing, and in particular relates to a fatigue testing device for a sliding column assembly and a testing method thereof. Background technique [0002] The sliding column of the car can make the connection between the frame and the axle elastic, can absorb and ease the impact and vibration of the road surface, and at the same time have the function of attenuating the vibration of the elastic element, absorbing and dissipating vibration energy. Sliding columns are generally composed of shock absorbers, springs, buffer blocks, etc. Taking the former strut assembly as an example, in the existing verification test, the shock absorber assembly, coil spring, and buffer block are assessed separately. The assessment of a single component generally considers the principal stress of the component and adopts the method of equal amplitude loading, which can complete the verification of the product faste...

AI Technical Summary

Problems solved by technology

The assessment of a single component generally considers the principal stress of the component and adopts the method of equal amplitude loading, which can complete the verification of the product faster, but at the same time, because the loading force of the bench test is different from the actual force of the component and bring error

[0003] In the published Chinese patent CN103018056A, the strut life test method, the strut assembly is installed vertically on the test fixture, and the equipment is excited from the upper end of the strut assembly, which is the same as that of the strut assembly in the actual vehicle state. The location of the incentive source does not match, making it difficult to guarantee the accuracy of the test

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