Cable towing protection device for cable and cable clamp of coal mining machine

Abstract

The invention discloses a cable towing protection device for a cable and a cable clamp of a coal mining machine. The cable towing protection device comprises a connecting plate assembly; an overturning frame assembly which is detachably mounted on the connecting plate assembly and can overturn relative to the connecting plate assembly; and a cable clamp overload protection mechanism which is mounted on the overturning frame assembly and can overturn relative to the overturning frame assembly, wherein the cable clamp overload protection mechanism comprises a clamping plate assembly used for fixing one end of the cable clamp, and the cable of the coal mining machine penetrates through the clamping plate assembly; a tension detection assembly which is used for detecting a tension signal of the cable clamp to the clamping plate assembly, wherein the tension detection assembly transmits a detected tension signal to a control system of the coal mining machine, the control system processes the tension signal and then compares a determined tension value with a tension set value, and when the determined tension value is larger than the tension set value, the control system controls the coal mining machine to be powered off so as to carry out first protection on the cable clamp. The cable towing protection device is safe, reliable and high in practicability, and has advancement and generalizability.

Description

technical field [0001] The invention relates to the technical field of underground mining equipment, in particular to a tow cable protection device for a shearer main engine cable and a cable clamp. Background technique [0002] In the underground fully mechanized mining or high-grade general mining working face of the mining company, the cable and cable clamp of the main engine of the coal mining machine have not been installed with safety protection devices. Installed in the cable trough of the scraper conveyor, it jumps out and scrapes at the connection of one side of the guard plate or there are other obstacles in the cable trough, and there are phenomena such as suffocation and jamming. Such phenomena will cause excessive local stress on the cable splint. When the stress When the tensile strength is reached, the cable splint will be damaged and fractured. At this time, the main cable of the shearer will be subjected to a large pulling force, which will cause the cable t...

AI Technical Summary

Problems solved by technology

[0002] In the underground fully mechanized mining or high-grade general mining working faces of mining companies, the main cable and cable clamp of the shearer are not installed with safety protection devices. When the shearer is working, the cables and cable clamps are accidentally affected by Installed in the cable trough of the scraper conveyor, it jumps out and scrapes at the connection of one side of the guard plate or there are other obstacles in the cable trough, which will cause suffocation and jamming. Such phenomena will cause excessive local stress on the cable splint. When the stress When the tensile strength is reached, the cable splint will be damaged and fractured. At this time, the main cable of the shearer will be subjected to a large pulling force, which will cause the cable to be damaged, cause the shearer to stop running, and even cause a safety accident

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