Test device of frictional characteristic of sliding bearing under middle and heavy radial load

Abstract

The invention relates to a test device of a frictional characteristic of a sliding bearing under a middle and heavy radial load, comprising a simulative sliding bearing, wherein the simulative sliding bearing comprises a shaft and a shaft sleeve, a radial loading device is arranged on the outer peripheral surface of the shaft sleeve, and two raised ring surfaces which have the same structure and are matched with the inner peripheral surface of the shaft sleeve in a sliding mode are symmetrically arranged on the outer peripheral surfaces of shafts arranged on both sides of loading points supported by the loading end and the outer peripheral surface of the shaft sleeve. In the invention, two raised ring surfaces are arranged on the outer peripheral surface of the shaft along an axial direction at intervals, the inner peripheral surface of the shaft sleeve is in contact with two ring projections, thus, the contact surface of the shaft sleeve and the shaft is smaller, the dimensions of related parts can be reduced in the same proportion, the working state of the sliding bearing can be simulated in reality, the internal friction force of the sliding bearing can be accurately measured in an experiment condition, and meanwhile, the two raised ring surfaces are symmetrically arranged corresponding to the loading points to ensure two even contact loads.

Description

Technical field [0001] The invention relates to a measuring device for testing the friction torque of a sliding bearing under conditions of medium and heavy radial loads, and belongs to the field of bearing friction torque measurement. Background technique [0002] In recent years, due to the needs of industrial and technological development, the research on the friction torque of various bearings used in various frontier fields has received more and more attention. Many literatures reported methods and results of calculating bearing friction torque through theoretical analysis. However, in order to obtain more practical and accurate data, it is required to measure the friction torque of the bearing under different load, temperature, speed and lubrication conditions, so as to estimate the life and work efficiency of the bearing, judge the defect and operating state of the bearing, and establish high reliability , Design basis for high-efficiency and high-precision bearings. How...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a test device for the friction characteristics of sliding bearings under medium and heavy radial loads, to solve the problem in the prior art that the sliding bearings bear a huge load under medium and heavy loads. The problem that the internal friction of the sliding bearing bearing the radial load cannot be accurately measured due to the difficulty of the original size test under the same conditions

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