A kind of steel wire multi-axis fretting fatigue test device and method

Abstract

The invention relates to a device and a method for a multi-axis fretting fatigue test of a steel wire. The device comprises a base frame, a pull-torsion fatigue system, a swing loading system and a condition monitoring system, wherein the base frame comprises a base, support stand columns, bearing beams and support fixture blocks, the support stand columns are symmetrically arranged on the base; the bearing beams are respectively arranged on the tops of the support stand columns; the support fixture blocks are respectively arranged in the middle parts of the support stand columns; the pull-torsion fatigue system comprises a support system, a torsion driving system and a pull-pull fatigue system; the swing loading system comprises a swing driving system and a loading system; the condition monitoring system comprises a fretting measurement system, an axial fatigue load measurement system, a torsion measurement system and a swing measurement system. The torsion angle of the fatigue steel wire can be obtained through a crank-link mechanism by adjusting the eccentric position of an eccentric block; the multi-axis fretting fatigue test of the steel wire can be realized in the composite motion modes such as pull-pull fatigue, torsion and variable crossing angle swing and the like; the device and the method are used for disclosing the multi-axis fretting fatigue fracture mechanism of the steel wire, and carrying out quantitative evaluation on multi-axis fretting fatigue damage evolution and multi-axis fretting fatigue life of the steel wire.

Description

technical field [0001] The invention relates to a multi-axis fretting fatigue test device and method for a steel wire, in particular to a multi-axis fretting fatigue test device and method for a steel wire in composite motion modes such as pull-pull fatigue, torsion and variable crossing angle swing. Background technique [0002] The total amount of coal resources in my country is about 5.57 trillion tons, of which 53% of the coal resources are buried deep below a kilometer. At present, the average mining depth of large and medium-sized coal mines in my country is 456 m, and there are 47 wells with a depth of more than 1,000 meters, and the number is increasing year by year. With the mining going deep and the high-efficiency production requirements of modern large-scale mines, the multi-rope friction hoisting system (including hoist, hoisting wire rope, hoisting container, etc.) The advantages of high height and small size of the machine are widely used in the lifting of su...

AI Technical Summary

Problems solved by technology

Patent No. 201210062350.1 discloses a multi-directional fretting fatigue testing machine with controllable test environment and its testing method. Two-dimensional fretting mechanism, which can evaluate the multi-directional fretting friction and wear properties of rigid materials, is not suitable for the evaluation of multi-axis fretting fatigue damage evolution and fracture mechanism of slender flexible body steel wire

Images