Mine hoisting friction gasket slip resistance testing device and method

Abstract

The invention discloses a mine hoisting friction gasket slip resistance testing device. The device comprises a positioning platform, a tension loading device, two tension positioning devices, a steelrope limiting device, a steel rope dragging device, two radian positioning devices and a gasket loading device. All sub-devices are arranged on the positioning platform along a peripheral direction. The two radian positioning devices are symmetrically arranged on two sides of the gasket loading device at equal included angles. In hydraulic cylinder loading and endless steel rope dragging modes, positive pressure and friction borne by a friction gasket are simulated. A radian of a winding drum is simulated through utilization of the two radian positioning devices which are arranged at the equalincluded angles. In the endless steel rope dragging mode, friction wear morphology of the friction gasket is tested under different steel rope drive speeds, different positive pressures and differentfriction distance. A friction coefficient of the friction gasket can be tested. High speed slip friction working condition of the gasket can be effectively simulated. The friction gaskets with different rope groove radians and diameters can be tested. Slip resistance of the friction gasket can be accurately evaluated.

Description

technical field [0001] The invention relates to a device and a method for testing the anti-skid performance of a friction lining, in particular to a device and a method for testing the anti-skid performance of a friction lining suitable for mine hoisting. Background technique [0002] As the main mine hoisting equipment, the vertical shaft hoist is responsible for the important tasks of lifting coal gangue, lowering materials, and lifting personnel and equipment. It is the connection hub between the underground of the coal mine and the ground, and frictional lifting plays a dominant role. The friction lining is installed on the surface of the reel, and the friction between it and the steel wire rope is used to drag the lifting container up and down. When the friction lining fails, there will be relative sliding between the steel wire rope and the friction lining, which will cause the wear of the steel wire rope, and even cause major vicious accidents such as slipping and fal...

AI Technical Summary

Problems solved by technology

The above research mainly has the following problems: First, the theoretical research on fretting wear, impact wear, and sliding wear of a single type of liner cannot be uniformly tested on friction liners with different rope groove radians and diameters; second, the main The actual lifting process is simulated by pulling the steel wire rope and the friction lining relative to each other in a straight line. However, the rope groove of the real friction lining is generally curved, and the steel wire rope and the friction lining are in arc contact, which makes it impossible to accurately evaluate the wear pattern of the friction lining. ; Thirdly, it is difficult to simulate continuous high-speed sliding friction due to the limitation of wire rope diameter, minimum reel diameter, and reel capacity when the wire rope is used to pull in a straight line

Therefore, it is necessary to study an anti-skid test device, which can perform static friction and dynamic friction tests on friction linings with different rope groove radians and diameters, especially the anti-skid test under high-speed sliding of steel wire ropes, so as to test different types of friction linings produced by various manufacturers. It is of great significance to ensure the safety of friction lifting by standardizing the friction lining market and ensuring the anti-skid performance of the friction lining. However, there is currently a lack of corresponding testing devices.

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