Mechanism for measuring dynamic strength of automobile front axle rocker arm

A dynamic strength, front axle technology, applied in the direction of elasticity test, vehicle test, machine/structural component test, etc. The effect of increasing credibility

Inactive Publication Date: 2009-09-30
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of mechanism that is used for testing the dynamic strength of rocker arm of front axle of automobile, described this mechanism that is used for testing the dynamic strength of rocker arm of automobile front axle will solve the problem that the test bench in the prior art cannot simulate automobile The actual working conditions of the rocker arm of the front axle and the technical problems of the loss of a large number of test parts

Method used

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  • Mechanism for measuring dynamic strength of automobile front axle rocker arm
  • Mechanism for measuring dynamic strength of automobile front axle rocker arm
  • Mechanism for measuring dynamic strength of automobile front axle rocker arm

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Embodiment Construction

[0015] like figure 1 As shown, in the dynamic durability bench test carried out on the rocker arm of the front axle of the automobile in the prior art, the rubber metal bearing 2 at the rear axle support 1 of the rocker arm was damaged early and abnormally. Dozens or even more rubber-metal bearings 2 need to be lost to complete the test. For this reason, the test mode has been changed, that is, the rocker arm rear axle support 1 is directly fixed in a rigid frame. However, during the test, it was found that there was abnormal damage near the rear axle of the rocker arm, and the service life was very short. The reason is that the rubber-metal bearing 2 is changed to a rigid support, which changes the constraints or boundary conditions of the rocker arm, thus destroying the deformation distribution and stress distribution of each point of the rocker arm when it is stressed.

[0016] According to the similarity theory, any two points of the rocker arm installed on the vehicle (...

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Abstract

A mechanism for testing the dynamic strength of the rocker arm of the front axle of an automobile, which can simultaneously simulate the constraints of axial linear and radial nonlinear stiffness. One side of the anti-deflection clamping mechanism simulates the constraint of axial linear stiffness, and the other side passes through two Two force rods are respectively connected with two triangular crank-spring steel plate mechanisms, and the anti-deflection clamping mechanism drives one of the triangular crank mechanisms to rotate clockwise or the other to rotate counterclockwise under the action of tension or pressure of the loading device. , the rolling bearing at a vertex of the triangular crank member moves vertically along the bump on the upper end of the variable-section spring plate, thus producing different forces and its force arms acting on the variable-section spring plate, so that the anti-deflection clamping mechanism produces the same The radial stiffness characteristics of the rocker arm are consistent with the constrained reaction force of the nonlinear stiffness, and the rear axle support of the car front axle rocker arm is constrained in the anti-deflection clamping mechanism, so as to truly reproduce the working state of the car front axle rocker arm and improve the simulation reliability of the test.

Description

technical field [0001] The invention relates to vehicle test equipment, in particular to a vehicle dynamic strength durability simulation test bench, in particular to a mechanism for testing the dynamic strength of a front axle rocker arm of an automobile. Background technique [0002] The rapid development of the automobile industry puts forward higher requirements on the reliability and R & D cycle of auto parts. Simulating the actual working conditions of auto parts and conducting dynamic strength and durability tests on them is an effective way to study their reliability. However, if the whole vehicle is used for road test under actual working conditions, the test cycle will be very long and consume a lot of manpower, material and financial resources. Therefore, in order to shorten the test period, it is necessary to carry out intensive bench tests. An automobile company once commissioned a parts factory to conduct a dynamic durability bench test on the rocker arm of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M5/00G01M19/00G01M17/007G01M99/00
Inventor 徐兆坤何稚桦赵高晖蒋妙范黄虎吴伟蔚项阳
Owner SHANGHAI UNIV OF ENG SCI
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