Mobile mining flameproof and intrinsically safe control box

Abstract

The invention discloses a mobile mining flameproof and intrinsically safe control box, and belongs to the technical field of mining control equipment. The control box comprises two oppositely mounted shells, an erecting table fixedly connected to the peripheral outer walls of the shells and a central control box arranged in the shells, and a mobile assembly is fixedly connected to the outer wall of one side of the erecting table. A buffer assembly comprises a fixed sleeve fixedly connected to the inner wall of the top of the shell and an inner connecting sleeve fixedly connected to the outer wall of the top of the fixed sleeve, the inner connecting sleeve and the inner wall of the fixed sleeve are slidably connected with an inner cylinder, sliding grooves are formed in the inner wall of the periphery of the fixed sleeve, and springback rods are fixedly connected to the inner walls of the tops of the sliding grooves. By arranging the buffer assembly, a high-temperature and high-pressure gas in the inner connecting sleeve and the shell can be treated, meanwhile, the space in the shell is extended and expanded by means of movement of the inner cylinder, the gas pressure is reduced, and the inner cylinder is slidably connected to the inner wall of the inner connecting sleeve so that the shell keeps sufficient sealing performance.

Description

technical field [0001] The invention relates to a mine control box device, in particular to a mobile mine flameproof and intrinsically safe control box, which belongs to the technical field of mine control equipment. Background technique [0002] Classification of explosion-proof electrical equipment specially used for underground coal mines. Explosion-proof electrical equipment is divided into explosion-proof type, increased safety type, intrinsically safe type and other types. The characteristic of intrinsically safe electrical equipment is that all circuits are intrinsically safe circuits; explosion-proof type The explosion-proof type is to enclose all the parts of the equipment that may ignite explosive gas mixtures in one shell. [0003] Existing explosion-proof control boxes for mines are generally based on the protection and isolation design of the shell, which isolates the internal environment from the external space, avoiding possible explosion hazards inside and ou...

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Problems solved by technology

[0003] Existing explosion-proof control boxes for mines are generally based on the protection and isolation design of the shell, which isolates the internal environment from the external space, avoiding possible explosion hazards inside and outside the shell, that is, the shell is always in a stable and restricted state, but once the shell The gas leakage of the control box or the release of high-temperature and high-pressure gas inside will gradually strengthen the impact on the shell, so the restrictive ability of the shell often weakens its explosion-proof ability

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