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Friction loss experiment device and method under multidirectional vibration of steel wire rope and gasket

A friction loss and experimental device technology, applied in the field of mining machinery and equipment, can solve problems such as differences, ignoring lateral vibration, and inability to adjust longitudinal excitation, achieving the effects of simple parameter adjustment, comprehensive vibration modes, and improved reliability and stability.

Active Publication Date: 2020-05-12
XUZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent (CN105910982B) announced a method for measuring the friction coefficient of hoist friction lining based on the arc surface method, and Chinese patent (CN103940733B) announced a micro-slip test platform for hoist friction lining. The sliding friction test between the steel wire rope and the liner at the local wrap angle is different from the actual whole wrap angle transmission, and the dynamic load considered is only the dynamic load of the longitudinal tension of the steel wire rope, and does not consider the more significant impact on the friction transmission. the lateral vibration;
[0005] Chinese patent (CN104122198B) discloses a friction pad-lifting wire rope dynamic friction transmission test device and method, which only realizes the measurement of the vibration of the wire rope in each direction, and its longitudinal excitation cannot be adjusted, and the impact of vibration on the limit friction cannot be measured. actual impact of force
[0006] The problems existing in the prior art mainly include: (1) It is impossible to accurately measure the boundary characteristics from static friction to sliding friction and the limit friction force of the enclosing angle; Study on Vibration-Friction Parameters with Pad

Method used

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  • Friction loss experiment device and method under multidirectional vibration of steel wire rope and gasket
  • Friction loss experiment device and method under multidirectional vibration of steel wire rope and gasket
  • Friction loss experiment device and method under multidirectional vibration of steel wire rope and gasket

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Experimental program
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Embodiment 2

[0086] The difference between the experimental device of this embodiment and the first embodiment is that the excitation frequency is 25 Hz, the weight of the counterweight 14 is 1000 kg, and the excitation amplitude is 0.5 mm.

Embodiment 3

[0088] The difference between the experimental device of this embodiment and the second embodiment is that the excitation frequency is 50 Hz, the weight of the counterweight 14 is 2000 kg, and the excitation amplitude is 2 mm.

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Abstract

The invention relates to the field of mining mechanical equipment, in particular to a friction loss experiment device and method under multidirectional vibration of a steel wire rope and a gasket. Thedevice comprises a base, a rack fixed at the upper part of the base, and a friction mechanism fixed on the rack. A steel wire rope is wound on the friction mechanism; friction gaskets are arranged onthe surfaces, making contact with the steel wire rope, of the friction mechanism. One end of the steel wire rope is fixedly connected with a counterweight mechanism; the other end of the steel wire rope is connected with a vibration excitation mechanism for generating three-dimensional vibration at the other end; the rack is provided with a measuring mechanism used for measuring the ultimate friction force between the steel wire rope and the gasket. The vibration excitation mechanism and the measuring mechanism are controlled by the control system. The friction force measurement under different steel wire rope vibrations can be realized, and the rope-gasket limit friction force loss degree under different amplitudes, directions, positions and different pre-tightening forces can be analyzed.

Description

technical field [0001] The invention relates to the field of mining machinery and equipment, in particular to a friction loss experimental device and method under multi-directional vibration of a steel wire rope and a liner. Background technique [0002] The multi-rope friction hoist is more and more used in the mine hoisting of deep and ultra-deep mines due to its significant advantages such as large lifting capacity, high safety factor, low power consumption, small machine size, and low cost. Friction lifting relies on the friction force between the wire rope and the liner to transmit the force. The friction liner and the wire rope form a dual friction pair. The friction coefficient between the two directly affects the lifting capacity, work efficiency and safety of the hoist. The vibration of a single component has a definite frictional weakening effect on the friction pair of two friction pairs of sliding friction, and the magnitude of the friction reduction effect is re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/027G01M13/028G01M13/023G01M7/02G01N3/02G01N3/56
CPCG01M7/022G01M13/023G01M13/027G01M13/028G01N3/02G01N3/56
Inventor 郭永波杨琴张德坤马皖王崧全张莹莹郑强国杨浩任露杨国标
Owner XUZHOU NORMAL UNIVERSITY
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