A device for measuring mechanical friction and adhesion coefficient

Abstract

The invention relates to a mechanical friction and adhesion coefficient measuring device, which is used to measure the friction coefficient or adhesion coefficient of a piece to be tested, including a frame, a drive shaft, a friction disc, a force transmission shaft, a force measuring mechanism, Pressing mechanism and thrust mechanism, one end of the drive shaft is connected to the external drive device, and the other end is connected to the friction plate, the thrust mechanism and the test piece are sequentially installed on the force transmission shaft, and the test piece is in contact with the friction plate , one end of the force transmission shaft is connected to the force measuring mechanism, and the pressing mechanism is arranged at the other end of the force transmission shaft; the external driving device rotates the drive shaft, drives the friction disc to rotate, and simultaneously the force transmission shaft rotates in the vertical plane, By adjusting the pressing mechanism and the thrust mechanism, the force applied to the test piece is changed, and the friction coefficient or adhesion coefficient of the test piece is obtained according to the torque measured by the force-measuring mechanism. Compared with the prior art, the invention has the advantages of high reliability, simple operation, low cost and the like.

Description

technical field [0001] The invention relates to a measuring device for friction coefficient and adhesion coefficient, in particular to a mechanical friction and adhesion coefficient measuring device, which can be used in the field of wheel-rail transportation, the development of rail lubricants and the like. Background technique [0002] For a measuring device that can accurately measure mechanical friction and adhesion coefficients, the loading method is very important. On the railway, in the past, the measurement method of a large-scale rolling test bench was used, such as the patent application CN104181101A discloses a rail surface friction coefficient measuring device, which is set in contact with the rail and moves along the rail under the action of an external force. There is a measuring mechanism for measuring the friction coefficient of the top surface and side of the rail; an information collection mechanism for collecting the position information of the measuring d...

AI Technical Summary

Problems solved by technology

Because the mechanism is very large, it is time-consuming and labor-intensive to operate, and some existing test benches need to add strain gauges to derive the force in the form of deformation, and then convert the electrical signal into a digital signal to read the force between the wheel and rail, which is troublesome to operate.

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