Test device and method for researching friction characteristics between tire and actual pavement

Abstract

The invention discloses a test device and method for researching friction characteristics between a tire and an actual pavement, and belongs to the technical field of detecting equipment. Actual working conditions of the tire with load running on different pavements are well simulated through mechanical structures such as a loading sleeve, a loading sleeve base, a rotary arm and a rack, the test device and method for researching friction characteristics between the tire and the actual pavement can be used for testing a friction factor between the tire and the pavement and researching wear pattern between the tire and the pavement, compression amount of a loading spring can be adjusted through a loading screw according to requirements, and thus a test load is adjusted; meanwhile tire running speed is adjusted through a transmission system; changing is conducted on a slip rotary rate or a slip shift rate between the tire and a pavement through adjusting a connected relation between a tested wheel and an auxiliary wheel, multiple kinds of running conditions of the tire on the pavement are simulated, data such as the load, a rotate speed and a torque are detected in real time through asensor, and thus the friction factor between the tested tire and the tested pavement is obtained by formula calculation.

Description

technical field [0001] The invention belongs to the technical field of detection devices, and in particular relates to a test device and method for researching the friction characteristics of tires and actual road surfaces. Background technique [0002] At present, the number of various motor vehicles continues to increase, and the frequency of action of vehicle loads on the road surface is also increasing. The gravity of the vehicle load will deform the road surface and form ruts. When the vehicle starts, brakes, shifts, turns, and overcomes various resistances, it will exert a horizontal shear force on the road surface. This shear force will cause the road surface to move horizontally Under the above-mentioned complex alternating loads, the service life of the pavement is also greatly reduced. Specifically, on the one hand, the friction coefficient between the tire and the road will decrease with the wear and tear of the tire surface and the road surface, which will incre...

AI Technical Summary

Problems solved by technology

[0003] Chinese Patent Publication No. CN 101532934A discloses "A Method and Device for Accelerated Loading Test of Main Drive Wheel Type Pavement Material". Because the centrifugal force has a destructive effect on the test pavement material, the test cylinder cannot be rotated at high speed and can only be tested at low speed, so the conclusion obtained is relatively different from the actual situation.

In addition, its technical solution adopts the method of braking the test tires for the slip test, which has the following problems: 1. During the working process of the brake, the friction plate will generate a lot of heat, and the test cannot be continued due to the temperature rise; 2. The braking process It consumes a lot of energy and increases the power of the equipment; 3. It is difficult to control the slip rate of the wheel during braking, which will make data analysis difficult

[0004] In summary, the simulation conclusions of the existing simulation test devices are generally quite different from the actual situation, cannot accurately reflect the actual situation, and cannot meet the needs of friction process research.

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