Heavy-duty vehicle parallel double tire quarter active suspension simulation test bench

Abstract

The invention provides a heavy vehicle parallel-type double-tire quarter active suspension simulation work condition test bed, which mainly comprises a base, a support assembly, a weight box and hydraulic cylinder assemblies. Two side-by-side hydraulic cylinders are vertically arranged on the base; supports at the two sides and an upper connection plate form a test bed frame; and one support is provided with a fixture platform. The base is vertically equipped with two parallel hydraulic cylinder assemblies, wherein one hydraulic cylinder assembly is a movable hydraulic cylinder assembly, the top portion of each internal cylinder being provided with a working disc. The weight box is arranged above the side supports of the test bed. Two tires of a parallel-type double-tire quarter active suspension are placed on the working discs at the top ends of the two hydraulic cylinders respectively; and through synchronous actuation and differential actuation of the two hydraulic cylinders as wellas actuation of a single hydraulic cylinder, simulation of working conditions of same stress and different stresses of the parallel-type double tires and stress condition of the single tire is realized, thereby reproducing driving stress conditions of a quarter active suspension system on actual pavement, and achieving a purpose of testing actuation performance and vibration damping effect of theactive suspension under different road conditions.

Description

technical field [0001] The invention relates to a test device system, in particular to a heavy-duty vehicle simulated working condition test bench. Background technique [0002] Vehicles with active suspension have higher driving comfort and handling stability. However, the control of the active suspension system is complex, and the performance of the vehicle suspension system needs to be tested on real vehicle road conditions, which is expensive. It is a reasonable choice to use the test bench to simulate various road conditions for testing. [0003] At present, most of the quarter active suspension test benches design the road conditions as a simplified vertical model, which can only meet the test requirements of single tire and light load of the suspension. Moreover, the test function is single, and the interaction between the various rod systems of the suspension is ignored, so it is impossible to obtain the dynamic characteristics of the suspension actuator under actu...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the quarter active suspension test benches design the road conditions as a vertical simplified model, which can only meet the test requirements of single tire and light load of the suspension

And the test function is single, ignoring the interaction between the various rod systems of the suspension, and it is impossible to obtain the dynamic characteristics of the suspension actuator under actual road conditions

[0004] In heavy-duty vehicles, the parallel double tire structure is widely used. Due to the particularity of the parallel double tire structure, most of the current tests on the parallel double tire suspension are conducted by simplifying the parallel double tire into a single tire for testing. The real working conditions in which the tires generate additional moments and couples to the suspension under complex conditions such as two tires with different forces and a single tire suspended in the air cannot meet the test requirements.

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