Automotive steering knuckle system testing device

Abstract

The invention discloses a an automotive steering knuckle system testing device. The testing device comprises a supporting frame, a lower control arm simulated member, an upper control alarm simulatedmember, a steering linkage simulated member, a vibration damper, a wheel simulating assembly, an auxiliary mounting pull rod assembly, a hub and a triangular plate with a through hole on the top corner. One end of the lower control arm simulated member and one end of the upper control arm simulated member are connected with the steering knuckle through spherical pins, and the other end of the lower control arm simulated member and the other end of the upper control arm simulated arm are hinged with corresponding mounting seats of the supporting frame. The automotive steering knuckle system testing device has advantages of considering an effect of rigidity of a component which is connected with the steering knuckle, considering a factor of load direction change which may occur in a loadingtesting process on the steering knuckle, and accurately simulating loading of a tyre grounding central point, wherein the wheel simulating assembly has high rigidity and low deformation; the triangular plate is used for simulating a brake disc, thereby realizing simple mounting and no loosening; and the auxiliary mounting pull rod assembly improves convenience in mounting a vibration damping cylinder and performs a safety protection function in the testing process.

Description

technical field [0001] The invention relates to a test device for an automobile suspension component, in particular to a test device for an automobile steering knuckle system. Background technique [0002] Among the automobile chassis parts, the steering knuckle is one of the important structural parts. It carries the sprung mass of the entire automobile. Especially in the conditions of crossing road conditions, braking, acceleration, etc., its load is increased, and it needs to have sufficient The strength can meet the harsh working conditions under occasional conditions, and it also needs sufficient fatigue strength to meet the load under long-term normal working conditions. After the lightweight design, it is necessary to carry out test verification. At present, when carrying out strength tests on automobile steering knuckles, most of them are only single-body tests on the steering knuckle, that is, only the steering knuckle is installed on the bench. Load force at each ...

AI Technical Summary

Problems solved by technology

After the lightweight design, it is necessary to carry out test verification. At present, when carrying out strength tests on automobile steering knuckles, most of them are only single-body tests on the steering knuckle, that is, only the steering knuckle is installed on the bench. Load force at each of its installation points respectively, or install a force plate for simulating the wheel, and load at one end of the force plate, such as the automobile steering knuckle test device and its test method with the publication number of 101441135B and the one with the publication number of CN203519327U Endurance test device for automobile steering knuckle, which directly fixes the control arm installation point, shock absorber installation point, steering knuckle arm installation point, etc. of the steering knuckle, directly connects the hub center through an afterburner plate, and loads on the other end of the afterburner plate , there are certain defects in this test. On the one hand, it does not consider that the steering knuckle, control arm, shock absorber and other peripheral components will move as a whole during the loading process, thereby changing the actual force state of the steering knuckle. On the other hand, The load at the ground contact point of the simulated wheel does not take into account the load at the center of the vehicle withdrawal, which deviates from the actual force state

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