Device for testing performance of automotive steering system

Abstract

The invention discloses a device for testing the performance of an automotive steering system, comprising a steering simulating system, an axial loading system, a suspension fork simulating system and an automotive steering system, wherein the steering simulating system is used for simulating the rotation of a steering wheel in an automatic and manual mode; the axial loading system is used for simulating a steering load and loading the steering load to the automotive steering system (comprising a steering column, a steering gear, a tie rod and a simulation steering knuckle) through a Bell mechanism; the suspension fork simulating system is used for simulating wheel jumpiness during driving. The device for testing the performance of the automotive steering system is used for experimenting and testing the steering performance of an automotive steering in various driving conditions, such as experiments and tests of kinematic and mechanic parameters of full angle, transmission ratio characteristic, transmission clearance characteristic, transmission efficiency characteristic, driving moment, rigidity, relationship between steering performance and suspension fork jumpiness and the like. The device directly simulates the steering wheel to load the automotive steering through the Bell mechanism, so that the testing result is closer to a real working condition.

Description

technical field [0001] The invention relates to an automobile test device, in particular to an automobile steering system performance test device. Background technique [0002] Automobile steering system is an important part to ensure that the automobile turns or keeps stable according to the will of the driver, and its performance directly affects the safety and maneuverability of the automobile. Therefore, the performance test of the automobile steering system is of great significance to the determination of the design parameters of the steering gear and the reliability of the performance of the steering gear. Existing test bench products are for component testing of mechanical rack and pinion steering gear, hydraulic power steering gear and electric power steering gear respectively. There is no steering gear test bench common to all three, nor is there a test bench for steering system. The existing steering gear assembly test bench is for the three-axis performance test ...

AI Technical Summary

Problems solved by technology

The existing steering gear assembly test bench is for the three-axis performance test of the steering gear, and mostly adopts unidirectional axial loading. The test cannot completely simulate the actual working conditions of the steering gear, and cannot reflect the components composed of the steering gear and the steering knuckle. The system performance of the steering system cannot reflect the performance of the steering system under the suspension up and down jump and driving load. The parameters tested have large errors or are quite different from the actual working process. The test object is single and separated from the performance of the steering system. The test items There are also few, such as the comprehensive performance test bench of rack and pinion hydraulic power steering gear of different types produced by many domestic manufacturers and the comprehensive performance test bench of automobile electric power steering gear laboratory, etc.

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