Connector-free steel wire rope and liner stepless speed change sliding friction tester and testing method

Abstract

The invention discloses a connector-free steel wire rope and liner stepless speed change sliding friction tester and a testing method. The tester comprises a power system, a power transmission system, and a connector-free steel wire rope and liner sliding friction pair device, wherein the connector-free steel wire rope and liner sliding friction pair device comprises a connector-free steel wire rope wheel and a friction liner; and the power system is used for driving a connector-free steel wire rope ring on the connector-free steel wire rope wheel by the power transmission system to carry out a sliding friction test on the friction liner. The connector-free steel wire rope and liner stepless speed change sliding friction tester disclosed by the invention has a compact structure; the testing method is simple to operate; the installation is convenient and the reliability is high; and sliding working stations of a plurality of mine friction elevators can be simulated.

Description

technical field [0001] The invention relates to a non-joint steel wire rope and pad stepless sliding friction testing machine, which is especially suitable for simulating the sliding friction working condition between the steel wire rope and the friction pad on a mine friction hoist. Background technique [0002] With the development of large-scale and modern mine production, the friction hoist, which relies on the friction between the friction lining and the wire rope to transmit the lifting power, has been widely used in the large-scale mine hoisting system. Under normal hoisting conditions, there is elastic slippage between the friction lining and the steel wire rope on the mine friction hoist, and the sliding speed is lower than 10mm / s. Improper overloading of the hoist may cause the risk of slipping at any time. When a high-speed slipping accident occurs, the relative sliding speed between the liner and the wire rope will increase, up to tens of meters per second. The ...

AI Technical Summary

Problems solved by technology

However, the high-speed sliding friction test is a destructive test and cannot be carried out on-site. Therefore, it is necessary to develop a friction testing machine that can simulate the slipping conditions of the mine friction hoist

[0003] At present, the existing lining and wire rope friction testing machines are all based on the principle of the plane method: the patent (CN02212593.0) discloses a "friction lining friction performance simulation testing machine", and the patent (CN201010567284.4) discloses a " Friction pad testing machine", the above two testing machines can only simulate low-speed (<10mm / s) sliding conditions; patent (CN200510134988.1) discloses a "wire rope and pad high-speed friction testing machine", the testing machine can Simulate the sliding condition of 0.5mm / s to 6m / s, but the test machine cannot simulate the accelerated sliding condition and the sliding distance between the wire rope and the liner is limited

In addition, the patent (CN201110436607.0) discloses a design scheme of a "mine friction hoist liner sliding friction tester". , and when the pad is at different positions within a rotation cycle, the specific pressure it receives is variable and uncertain, so it is not conducive to the correct and direct study of the tribological properties of the pad

[0004] It can be seen that the following problems exist in the existing steel wire rope and liner friction testing machine: (1) the existing testing machine all adopts two pads to clamp the steel wire rope, and then twitches the steel wire rope to measure the friction performance of the liner, which is different from mine friction. The arc liner on the hoist does not match the actual sliding friction of the wire rope; (2) The existing testing machine cannot realize the accelerated sliding condition; (3) The length of the wire rope of the existing testing machine is limited, so the sliding distance is limited. Especially when sliding at high speed, it is impossible to achieve long-term sliding friction with the liner

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