Dynamic grounding pressure test device

Abstract

The invention provides a dynamic grounding pressure test device for a tyre. The dynamic grounding pressure mainly comprises a test platform, piezoelectric pressure sensors, a data acquiring and processing system and universal ball seats. A certain amount of stepped holes are formed on the upper surface of the test platform and are arranged in an array manner, the piezoelectric pressure sensors are arranged in the stepped holes, a universal ball seat is arranged on the upper part of a shell of each of the pressure sensors and consists of a universal ball, a ball, a fixed sleeve and a base, a flat plate is arranged at the upper end of each fixed sleeve, a round hole is formed at the center of each flat plate, the diameter of each round hole is smaller than that of each universal ball, and an extension part at the lower end of each fixed sleeve is in interference fit with the shell of the corresponding pressure sensor to make the corresponding universal ball seat fixed on the correspoding pressure sensor. The dynamic grounding pressure test device for the tyre can be used for measuring static or dynamic grounding pressure distribution of the tyre, does not limit the rotational speed and a rolling plane of the tyre, and makes a simulation environment more authentic and measuring data more accurate.

Description

technical field [0001] The invention relates to a tire contact pressure measurement device, in particular to a device capable of real-time dynamic measurement of tire contact pressure distribution. Background technique [0002] The forces required for the tire's load, traction, braking and steering all occur on a small area where the tire contacts the road. The mechanical state of this ground contact area affects various driving behaviors of the vehicle. In order to determine the best contact conditions between the tire and the road surface, reduce tread wear, improve vehicle handling stability, and evaluate the performance of the tire structure and pattern, it is necessary to study the ground pressure distribution of the tire. Although the existing theoretical analysis methods (including elastic mechanics method, finite element method, etc.) have achieved certain prediction results, they need to be compared with the actual results for analysis and correction. At present, t...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defect that the existing methods for measuring the tire ground pressure distribution cannot simultaneously measure the tire ground pressure distribution under static and dynamic pressures and the tire can only rotate in a single plane during the measurement process, the present invention provides a dynamic ground pressure Pressure test device, the test device can not only measure the static or dynamic ground pressure distribution of the tire, but also the measurement device does not limit the rotation speed and rolling plane of the tire, making the simulation environment more realistic and the measurement data more accurate

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