Multiple quick-opening locking devices for mine explosion-proof electrical appliances

Abstract

A multiple-quick-opening-door locking device for mining explosion-proof electric appliances comprises quick-opening door hinges which are arranged on a shell and connected with quick-opening doors. Each door hinge is provided with a locking shaft matched with the door hinge. A connecting rod mechanism is arranged on the inner wall of the shell above the door hinges. The connecting rod mechanism comprises a transversely-arranged connecting rod, a vertical connecting plate which is vertically arranged at the end part of the connecting rod, and a connecting plate connecting the connecting rod and the vertical connecting plate. The connecting rod, the connecting plate and the vertical connecting plate are hinged in sequence. The middle part of the connecting plate is arranged in the shell through a hinge shaft. The connecting rod is at least equipped with two vertical connecting rods, the end part of each vertical connecting rod is provided with a crank arm, and the end part of each crank arm is fixedly connected with a locking shaft. Slotted locking sleeves which are connected with isolating switches are evenly arranged in the shell at positions corresponding to the vertical connecting plate, and locking hook blocks matched with the slotted locking sleeves are correspondingly and evenly arranged on the vertical connecting plate. One end of each locking hook block is hinged with the vertical connecting plate, the other end of each locking hook block is provided with a claw matched with a groove in the corresponding slotted locking sleeve, and the middle part of each locking hook block is arranged on the inner wall of the shell through a hinge shaft.

Description

technical field [0001] The invention belongs to the quick-opening door structure form of an explosion-proof switch shell, and in particular relates to a mechanical locking device with multiple quick-opening door structures in the same cavity. Background technique [0002] With the upgrading of product performance and the continuous expansion of functions, the number of components used has also increased accordingly. In order to make the operation, installation, maintenance and repair more convenient and fast, the outer casing is made with more than two quick-opening doors according to the situation, which makes the original mechanical locking structure unable to meet the requirements. [0003] In order to solve the above existing problems, it is necessary to find a reliable and safe technical solution. Contents of the invention [0004] The object of the present invention is to solve the problem of mechanical locking of multiple quick-opening doors, thereby providing a lo...

AI Technical Summary

Problems solved by technology

In order to make operation, installation, maintenance and repair more convenient and fast, the shell is made with more than two quick-opening doors according to the situation, which makes the original mechanical locking structure unable to meet the requirements

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