Mining high-voltage switch multifunctional grounding device

Abstract

The invention discloses a multifunctional grounding device for a mining high-voltage switch, and the device comprises an insulating handle and a grounding connector connected with the insulating handle; a support frame of the insulating handle supports the grounding connector, the grounding connector is a multifunctional grounding connector, and an axial hole and a fastening bolt are arranged at the axis of the multifunctional grounding connector. A grounding internal thread and a screw internal thread are arranged on the circumferential surface of the multifunctional grounding connector, the grounding internal thread is connected with a grounding terminal through a grounding wire, and the grounding terminal is connected with the explosion-proof cavity shell; more than three screw internal threads are provided and have different apertures, the required screw internal threads are selected and rotated to the top end around a shaft to be fixed on the same axis with the insulating rod, and then the internal threads are in threaded connection with the switch conductive screw in a manner of rotating the insulating handle. According to the device, reliable contact between the connecting power line and the switch shell in a narrow space is realized, and injury accidents of switch maintenance personnel caused by accidental power transmission are eliminated.

Description

technical field [0001] The invention relates to a high-voltage explosion-proof switch, in particular to a multi-functional grounding device for a mine-used high-voltage switch. Background technique [0002] Coal mine high-voltage explosion-proof switch is used in the underground mining face, specifically, it is used to switch on and off the high-voltage load device. Due to the complex environment of the mining face, the high-voltage explosion-proof switch is composed of heavy and thick protective steel plates, and the internal space of the wiring cavity is small. [0003] Coal mine safety regulations stipulate that when the high-voltage explosion-proof switch is inspected and repaired underground, the power side of the wiring cavity must be grounded before maintenance. When the high-voltage wire of the high-voltage explosion-proof switch wiring cavity is connected to the terminal, there is no room in the wiring cavity. The traditional grounding device adopts a caliper structu...

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Problems solved by technology

[0003] Coal mine safety regulations stipulate that when the high-voltage explosion-proof switch is inspected and repaired underground, the power side of the wiring cavity must be grounded before maintenance. When the high-voltage wire of the high-voltage explosion-proof switch wiring cavity is connected to the terminal, there is no room in the wiring cavity. The traditional grounding device adopts a caliper structure. , when the maintenance workers use the caliper type grounding device to ground, they cannot be stuck on the terminal, but can only be connected to the switch terminal, which brings accident hazards to the maintenance workers to safely inspect the switch

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