Fatigue testing fixture of rear auxiliary frame

Abstract

A fatigue testing fixture of a rear auxiliary frame comprises a base seat, a first substrate, a second substrate, a guide substrate, a wheel disc, a third substrate and a guide rod. The first substrate comprises a first clamping head and a second clamping head arranged above the first clamping head. The second substrate comprises a third clamping head and a fourth clamping head arranged above the third clamping head. The wheel disc is arranged on the guide substrate in a hanging mode and in the longitudinal direction, and capable of swinging forth and back. One side of the wheel disc is movably connected with a loading rod. The third substrate is arranged on the base seat, and on the other side of the guide substrate. Two ends of the guide rod are capable of being movably connected with the wheel disc and the third substrate. Compared with the prior art, the fatigue testing fixture of the rear auxiliary frame has the advantages that the four clamping heads are arranged in the longitudinal direction, when the test is loaded, an air cylinder is only need to be arranged horizontally instead of being arranged perpendicularly, and therefore occupied spaces of height and land are reduced, setting requirements of the air cylinder are greatly lowered, and therefore the fatigue testing fixture of the rear auxiliary frame is beneficial for effectively controlling cost.

Description

technical field [0001] The invention relates to a clamp, in particular to a clamp applied to the fatigue test of the rear sub-frame. This fixture clamps the rear subframe to be tested, which can then be tested for fatigue. Background technique [0002] Automobile rear sub-frame fatigue durability road test is an effective way to collect rear sub-frame safety and reliability data. However, due to the long road test cycle and high cost at present, as the competition in the automobile industry continues to intensify, automobile manufacturers hope to achieve the purpose of saving costs while meeting the increasing safety and reliability requirements of users. Therefore, fatigue Endurance bench test has become the development trend of fatigue test of auto parts; that is, to simulate road field test through indoor test, so as to achieve the purpose of short test cycle and low cost. [0003] The rear subframe fatigue test fixture is a key mechanism in the rear subframe fatigue te...

AI Technical Summary

Problems solved by technology

This test fixture has the following disadvantages: First, the chucks are fixed, so a set of tooling can only test a certain type of rear subframe, and the application range is narrow. For multiple sets of different types of rear subframes , multiple sets of test fixtures are needed, so the cost is high; secondly, the vertical action of the cylinder, the gantry support frame needs to be built relatively high, so it needs a large floor space and high space, and at the same time, the gantry support frame has a large investment. The comprehensive cost of the overall test is high

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