Vehicle body self-levelling test stand

Abstract

The invention provides a vehicle body self-levelling test stand. The test stand comprises a road spectrum excitation device, a road spectrum excitation hydraulic system, a road spectrum excitation control system, a vehicle body self-levelling device, a vehicle body self-levelling hydraulic system and a vehicle body self-levelling control system, wherein the road spectrum excitation hydraulic system controls the extending speed and displacement of a piston rod of an excitation servo hydraulic cylinder corresponding to the road spectrum excitation device on the basis of received excitation signals of the road spectrum excitation control system to simulate actual complicated road conditions; under excitation of road spectrum excitation independent modules below the vehicle body self-levelling device, the vehicle body self-levelling control system generates corresponding vehicle body self-levelling control signals and sends the corresponding vehicle body self-levelling control signals to the vehicle body self-levelling hydraulic system on the basis of collected vehicle body posture information of the vehicle body self-levelling device to further control the extending speed and displacement of the piston rod of a levelling servo hydraulic cylinder corresponding to the vehicle body self-levelling device, so that self-levelling of a vehicle body is realized. According to the vehicle body self-levelling test stand, the actual complicated road conditions can be simulated, and the self-levelling function detection is realized.

Description

technical field [0001] The invention belongs to the technical field of test benches and is suitable for testing the self-leveling performance of wheeled vehicles, in particular to a body self-leveling test bench. Background technique [0002] The driving environment of off-road vehicles is usually relatively harsh, so the requirements for off-road performance, driving comfort and reliability of the vehicle are relatively high; heavy-duty vehicles are the best tools for transporting ultra-high, ultra-wide and overweight objects. The safety of transportation, to prevent objects from tipping over or slipping, and serious accidents of car crashes and fatalities, the carrying platform must maintain a certain level during driving; with the continuous improvement of the performance requirements for tactical vehicles, tactical vehicles have a certain degree of stability. Adaptability to changeable roads has become one of the important development directions, requiring vehicles to en...

AI Technical Summary

Problems solved by technology

[0008] Although the above-mentioned existing technologies can realize the self-leveling function of the vehicle body or provide any slope required for the experiment, the realization of the function is relatively simple and cannot be applied to the self-leveling of wheeled vehicles, and cannot reproduce the sloping road surface with both pitch and roll , does not have the ability to simulate complex road conditions and perform real-time leveling of wheeled vehicles based on the reproduced road surface, and there is no technical solution to solve such problems in the prior art

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