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Fatigue test device of automobile sliding column assembly and experiment method thereof

A technology of fatigue test and sliding column, which is applied in the direction of vehicle suspension/shock absorbing mechanism test, etc., can solve the problem of equivalent relationship that cannot guarantee road test or user consistency, and achieve reduced test cost, good repeatability, and shortened test cycle Effect

Inactive Publication Date: 2013-04-03
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention designs a kind of fatigue test device and experimental method of automobile strut assembly, and the technical problem that it solves is that the strut assembly in the existing bench test standard is tested separately, is divided into shock absorber test, spring tests, etc., and shock absorber tests and spring tests are mostly single-stage equal-amplitude loading, which cannot guarantee the equivalent relationship with road tests or users.

Method used

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  • Fatigue test device of automobile sliding column assembly and experiment method thereof
  • Fatigue test device of automobile sliding column assembly and experiment method thereof

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Embodiment Construction

[0028] Combine below figure 1 and figure 2 , the present invention is further described:

[0029] Such as figure 1 As shown, a fatigue test device for an automobile strut assembly, the two ends of the strut assembly 2 are respectively connected to the upper fixture 3 and the lower fixture 1, and the upper fixture 3 and the lower fixture 1 are the ends of the strut assembly 2. At the fixed end, the hydraulic actuator 5 is connected with the spool assembly 2 through the guide device 4; when the hydraulic actuator 5 moves up and down, it will make the coil spring 21 and the shock absorber of the spool assembly 2 simulate the vibration of the automobile when driving. The coil spring moves up and down; the strain sensor is attached to the outside of the coil spring 21 of the automobile sliding column assembly to collect the strain value of the spring, and the data collector collects the displacement value and force value of the hydraulic actuator 5; the computer collects the val...

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Abstract

The invention relates to a fatigue test device of an automobile sliding column assembly and an experiment method thereof. Two ends of the sliding column assembly (2) are respectively connected onto an upper clamp (3) and a lower clamp (1). A hydraulic actuator (5) is connected with the sliding column assembly (2) through a guide device (4). When the hydraulic actuator (5) moves vertically, a spiral spring (21) and a damper of the sliding column assembly (2) can simulate the spiral spring in the automobile driving process to move vertically. A strain sensor is bonded to the outside of the spiral spring (2) of the automobile sliding column assembly to collect strain value of the spring, and a data collector collects displacement value and force value of the hydraulic actuator (5). The computer modifies value collected by the strain sensor and the data collector according to automobile sliding assembly road load spectrum collected by a road test and reproduces road test condition and environment on the fatigue test device after edition processing of the principle of sliding column assembly damage equivalence.

Description

technical field [0001] The invention relates to the technical field of automobile product testing, in particular to a fatigue test device and an experimental method for an automobile sliding column assembly. Background technique [0002] As a part of the automobile suspension, the strut assembly connects the body and the wheel steering knuckle, which plays the role of buffering and guiding. The durability of the normal function of the strut assembly plays an extremely important role in driving comfort and handling. . The longer fatigue life of the strut assembly can ensure a good driving experience for users and enhance the brand of the car. Therefore, at the initial stage of product development, it is particularly important to develop a test method for verifying the fatigue life of the sliding column assembly. [0003] At present, there is no fatigue test standard for strut assembly in the industry standard or national standard of automobile test. In the existing bench t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/04
Inventor 许胜章礼文杜兵郭喜晨
Owner CHERY AUTOMOBILE CO LTD
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