A mine explosion-proof latch type low-voltage switch

By designing a mine-use explosion-proof, continuous-operation low-voltage plug, using galvanized pipe and neoprene rubber sealing gaskets, rapid connection and disconnection of electrical equipment in coal mines has been achieved. This solves the problems of small wiring cavity and safety hazards in existing technologies, and improves wiring efficiency and safety.

CN224367245UActive Publication Date: 2026-06-16QINGDAO HONGMA MINING EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINGDAO HONGMA MINING EQUIP CO LTD
Filing Date
2025-06-30
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

Existing underground electrical equipment connection methods in coal mines suffer from problems such as insufficient wiring cavity, slow wiring speed, and safety hazards, including water leakage, electrical leakage, and sparks.

⚗Method used

A mine-use explosion-proof, continuous-operation low-voltage plug is designed, comprising a clamping component, a first tubular component, a second tubular component, and a third tubular component, connected by a union joint. It uses galvanized pipe material and neoprene rubber sealing gaskets to achieve quick insertion and disconnection, and uses unsaturated resin insulation material to improve safety.

🎯Benefits of technology

It enables quick connection and disconnection between the power supply and the electrical equipment, improving wiring and disconnection efficiency, and enhancing explosion-proof performance and operational safety and reliability.

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Abstract

The utility model discloses a kind of mining explosion-proof follow-up low-voltage latch, belong to wire connection technical field, including clamping component, first tubular component, second tubular component and third tubular component connected in sequence;Clamping component is sequentially composed of small inner diameter tubular section, variable diameter tubular section and large inner diameter tubular section, annular pressing plate, sealing washer and fixedly arranged annular baffle are equipped in small inner diameter tubular section, annular pressing plate can extrude sealing washer and make its inner hole shrink by screwing back;Multiple electric conductive sockets are equipped in first tubular component along radial direction interval, and any adjacent electric conductive socket is filled with insulating material;Multiple electric conductive plugs are equipped in second tubular component along radial direction interval, and electric conductive plug includes plug rod arranged along front-back direction and plug quick connector arranged in the rear end of plug rod, and any adjacent electric conductive plug is filled with insulating material. Realize quick plug-in and breaking between power supply and electric equipment, and greatly improve the efficiency of wiring and breaking.
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