Bending fatigue damage monitoring system for steel wire under action of corrosion-alternating load coupling

Abstract

The invention discloses a bending fatigue damage monitoring system for a steel wire under action of corrosion-alternating load coupling. The bending fatigue damage monitoring system comprises a driving system, an alternating force loading system, a reversing control system, a surrounding angle adjusting system, a corrosion liquid addition system, a steel wire and a steel wire status monitoring system. According to the bending fatigue damage monitoring system, the bending fatigue test for the steel wire under the action of corrosion-alternating load coupling can be realized, and the quantitative monitoring on the internal damage of the steel wire and the disclosure on the bending fatigue damage failure mechanism can be achieved. The bending fatigue damage monitoring system can be used for exploring the dynamic contact between the steel wire rope and a friction liner of a friction wheel under the working condition of simulating mine hoisting, local microslip amplitude and the dynamic tension evolution of the steel wire rope. The bending fatigue damage monitoring system can provide effective experimental equipment for the quantitative analysis of the bending fatigue failure characteristic of the steel wire under action of corrosion-alternating load coupling; and the bending fatigue damage monitoring system is simple and convenient to operate, complete in functions, good in effect, and has wide practicability in the technical field.

Description

Technical field [0001] The invention relates to a monitoring system, in particular to a steel wire rope bending fatigue damage monitoring system under the coupling action of corrosion and alternating load. Background technique [0002] The steel wire rope is a spatial spiral structure that is twisted into strands by multiple layers of steel wires, and then twisted into a rope. Because of its good bearing capacity, good bending flexibility, smooth movement and no noise, large safety factor, light weight, etc., it is widely used in various Kind of lifting and lifting system. In the mine hoisting system, the hoisting wire rope is connected to the mine hoist and the hoisting container to form the mine hoisting system, which is responsible for the task of lifting coal, gangue, lowering materials, lifting personnel and equipment. Once the wire rope fails and breaks, it will lead to the destruction of people. A major accident, which seriously affected the normal production of the mine ...

AI Technical Summary

Problems solved by technology

However, the enclosing angle between the steel wire rope and the pulley in the above two testing machines cannot be adjusted, and the internal damage of the steel wire rope in different corrosive environments cannot be quantitatively monitored; the patent No. 201120180376.7 discloses a mechanical horizontal wire rope bending fatigue tester, which uses the same The polyester friction lining structure with matching rope diameter can study the bending fatigue test of steel wire ropes with different diameters. However, this experimental machine can only do bending fatigue experiments of steel wire ropes under predetermined loads, and cannot simulate the bending fatigue behavior of steel wire ropes under alternating loads. It cannot take into account the corrosion and other working conditions under some harsh conditions such as mines; the patent number is 201320428225.8, which discloses a bending fatigue test device for steel wire ropes, which uses two driving pulley devices with different outer diameters, and can perform bending fatigue tests for two kinds of steel wire ropes at the same time. It saves unnecessary time and does not need to take up too much space. However, the load of the test machine is static and the enveloping angle cannot be changed, and corrosion and other working conditions cannot be considered, which cannot truly reflect the actual situation of the wire rope. properties in the case

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