Test bed and method for testing high-frequency mechanical characteristic of tire

Abstract

The invention relates to a test bed and a method for testing the high-frequency mechanical characteristic of a tire. The test bed comprises a simulation road surface rack assembly composed of a bottom plate, a lower box body, a shaft base and an upper box body, a simulation road surface assembly composed of a high-rigidity drum, a main shaft, a driven belt pulley, a synchronous belt pulley, a speed measuring assembly and road surface protruding blocks, a drive mechanism assembly composed of a motor base, a motor plate, a servo motor, a drive belt pulley and an air blower, a transmission toothed belt, a wheel cover, a tire positioning assembly composed of a positioning support and an installing plate assembly, and a tire inflating and deflating mechanism assembly composed of an air pipe, a tire pressure control valve and an air pump, and the transmission toothed belt and the wheel cover are arranged between the drive belt pulley and the driven belt pulley. The test method comprises the steps that a deflated tire is installed on the positioning support and pressed on the outer surface of the high-rigidity drum, the tire is inflated to be vertically loaded, and the different road surface protruding blocks are installed on the high-rigidity drum to carry out the test and collect data. The test bed and the method are suitable for testing and modeling of the high-frequency mechanical characteristic of the tire.

Description

technical field [0001] The invention belongs to the technical field of testing tire mechanical properties, and in particular relates to a test bench and method for testing high-frequency mechanical properties of tires. Using the test bench and method, the high-frequency mechanical properties of tires can be tested and modeled. Background technique [0002] The mechanical characteristics of tires are the basis of automobile performance analysis and design, and have an important impact on the safety, handling stability, ride comfort and NVH performance of automobiles. The tire mechanical characteristics test bench is one of the key test equipment for tire characteristic modeling and vehicle performance integration, adjustment and development, and is the source of key data for vehicle dynamics simulation design. A lot of research work. [0003] The existing test benches in China include the low-speed flat tire test bench developed by Jilin University, which simulates the road ...

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Problems solved by technology

[0003] The existing test benches in China include the low-speed flat tire test bench developed by Jilin University, which simulates the road surface with the linear motion of the flat plate, and adopts the protruding tire compound loading mechanism to realize the test of tire complex working conditions at low speed; the tire dynamic tire test bench developed by Jiangsu University The performance test bench uses the loading cylinder to control the movement of the tire on the linear slide rail to realize the loading of the tire under composite working conditions; MTS Corporation of the United States has developed a high-speed tire test bench, and its loading mechanism adopts the main frame with vertical sliding columns to implement tire loading. Loading; it can be seen that the tire loading mechanism on the current test bench is based on the sliding guide rail type. In this way, during the high-speed rolling process of the tire, the gap in the sliding guide rail will inevitably affect the tire rolling and cause errors in the test data. , will inevitably affect the follow-up research

In addition, various types of tire test rigs appearing in the tire industry, among them, whether it is the previous drum test rig or roller test rig, crawler test rig, flat belt test rig, can not guarantee the high rigidity of the test simulated road surface and uniformity of stiffness

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