Coal mine underground explosion-proof box core pulling positioning locking mechanism

Abstract

The invention discloses a pulling, positioning and locking mechanism for a core of an explosion-proof box underground in a coal mine, which solves the problem of core positioning and locking existing in the core of an electric control cabinet. A limit block (15) with a limit pin groove (16) is fixedly arranged at the outer lower end of the side of the movement (3), and a notch (6) is arranged at the outer end of the movement drawing guide rail (2) , the front end of the swing arm (8) is hinged with the swing arm hinge shaft (7), and the limit short shaft (14) is arranged on the front inner side of the swing arm (8), and the limit short shaft (14) and the limit block ( 15) The limit pin groove (16) set on the top is a movable fit, and the support swing rod hinge shaft (11) is set on the inner side of the swing arm (8), and the upper end of the support swing rod (12) is hinged on the support swing rod On the hinge shaft (11), a support shaft (9) is provided on the inner side of the explosion-proof box body (1), and the support shaft (13) at the lower end of the swing rod (12) is movably matched with the support shaft (9). The utility model has the characteristics of simple mechanism and convenient use.

Description

technical field [0001] The invention relates to an electric control cabinet for underground coal mines, in particular to a positioning and locking mechanism for a pull movement in the electric control cabinet. Background technique [0002] With the improvement of automation in coal mining, the centralized control of underground mine explosion-proof electrical equipment is getting higher and higher. Mine explosion-proof vacuum feed switch is a protection device commonly used in underground mines. It has three-phase symmetrical leakage and leakage blocking protection when it is used as a main switch, and it is a backup protection for branch switch leakage protection. The core is the core component of the mining explosion-proof vacuum feed switch. The core is the executive component that realizes the reliable plugging of the main circuit and the three-phase conductive bar of the circuit breaker. During the installation and maintenance of the electric control cabinet, it is ofte...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a pulling positioning and locking mechanism for the core of an explosion-proof box in a coal mine, which solves the technical problems that the core cannot be pushed in place and the position of the extraction is limited during the maintenance process of the core of the existing electric control cabinet.

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