Multi-parameter adjustable cable fretting fatigue device

A fretting fatigue, adjustable technology, used in measuring devices, cable/conductor manufacturing, circuits, etc.

Inactive Publication Date: 2007-08-15
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Used to study fretting damage of transmission wires

Method used

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  • Multi-parameter adjustable cable fretting fatigue device

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Experimental program
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Effect test

Embodiment Construction

[0008] The device is provided with positioning groove seats (1), (12) for the fixed positioning of the tension device at the two ends of the wire (5), which are fixed on the ground, and the positioning groove seats are provided with screw rods (2), springs (3) and Strain gauge (4), positioning clamp (11). The middle end of the wire (5) is provided with a positioning guide rod (9) of a vertical positioning system, a sleeve, and a suspension clamp (10), and a rolling docking wheel (13) is connected below the suspension clamp (10). The rolling docking wheel (13) is connected with the motor eccentric wheel (8) below, and the positioning guide rod (9) and the sleeve of the vertical positioning device and the sleeve are installed in the center of the suspension clamp (10), and the sleeve is rigidly structured. Fixed on the ground, through the vertical positioning device, ensure the longitudinal movement of the vibration and prevent the movement deviation.

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Abstract

The invention relates to a multi-parameter adjustable cable fretting fatigue device. Wherein, the current wire vibration test bench mainly aims at the macroscopical wire vibrating or weaving; while for research on wire breaking, it is hard to adjust multiple parameters for vibrating frequency and amplitude, loading, and angle. This invention comprises a vibration source device, a tension device, a fixing slot base, a vertical location device, an overhanging-line clamp, some wires, a vibration detector, and a stress-strain detector. This invention completes the test by means of relative motion between the cam on motor shaft and flow butt-joint wheel fixed under the overhanging-line.

Description

Technical field: [0001] The invention relates to a multi-parameter adjustable cable fretting fatigue device for power system test. Background technique: [0002] As we all know, overhead transmission wires cause small vibrations under the excitation of external wind, which causes small local movements between the inner metal wires of the wires and between the wires and the guard wires, resulting in damage to the wires mainly in the form of fretting, which seriously affects power transmission. line security. However, the existing wire vibration test bench is mainly aimed at large-scale vibration or galloping of the wire. At present, it is difficult to adjust the vibration frequency and amplitude of the wire, as well as the load and angle of the wire on the test bench. The transmission wires are subjected to fretting fatigue damage due to long-term vibration in the breeze. Invention content: [0003] The object of the present invention is to overcome the above disadvantage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00G02B6/42G01M7/00G01M19/00G01M99/00
Inventor 陈荐黄志杰李录平
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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