Six degrees of freedom loading test bench

Abstract

A six-freedom loading testing bench comprises a loading ring, a fixing bracket and an actuator. The actuator comprises an X-direction actuator, a Y-direction actuator, a Z-direction actuator, an X-direction torsion actuator, a Y-direction torsion actuator and a Z-direction torsion actuator. A testing sample is fixed in the loading ring and is arranged on the fixing bracket in a rotatable manner. The Y-direction torsion actuator is connected with the testing sample through a Y-direction torsion loading rod. The X-direction actuator is connected with the loading ring through an X-direction loading rod. The Y-direction actuator and the Z-direction actuator are connected with the loading ring through the X-direction loading rod. The X-direction torsion actuator and the Z-direction torsion actuator are connected with the loading ring through an X-direction torsion loading rod and a Z-direction torsion loading rod. The six-freedom loading testing bench can realize multi-axis fatigue testing through one testing bench.

Description

technical field [0001] The invention relates to the field of automobile testing devices, in particular to a six-degree-of-freedom loading test bench for an automobile suspension swing arm bushing. Background technique [0002] The connection of the suspension swing arm is generally equipped with a bushing, which acts as a shock absorber. Such as figure 1 with figure 2 As shown, the bushing 10 of the swing arm generally includes an inner rod 11 , an outer tube 12 , and rubber 13 filled between the inner rod 11 and the outer tube 12 . The bushing 10 is secured to the suspension swing arm by an interference fit between its outer tube 12 and the hole in the swing arm. [0003] During the driving process of the vehicle, due to the impact caused by the uneven road surface, acceleration and braking, etc., the bushing is subject to loads in all directions, including the loads Fx, Fy, and Fz in the three directions of X, Y, and Z. And the torques Mx, My, Mz in the three directio...

AI Technical Summary

Problems solved by technology

[0005] Since this kind of test bench can only load the bushing in one direction, it cannot simulate the composite working condition for testing

In addition, when using this kind of test bench to test the bushing in multiple directions, each direction needs to be tested in turn, and the test cycle is longer.

Images