Air door air pressure control device for coal mines

Abstract

The invention relates to the field of coal mines, in particular to an air door air pressure control device for the coal mines. The air door air pressure control device comprises a door frame and a track rail, the door frame is internally provided with a sealing door, the outer wall of the bottom of one side of the sealing door is provided with a pulling mechanism, the inside of the pulling mechanism is provided with a fixing block, four rotating claws are welded to the outer wall of one side of the fixing block, pins are inserted inside the four rotating claws, L-shaped brackets are arranged at the ends, far away from the fixing block, of the rotating claws, and three pulling claws are welded to the outer wall of the end, close to the corresponding rotating claw, of each L-shaped bracket.The air door air pressure control device has beneficial effects that the friction between the sealing door and the door frame can be reduced, the requirement of frequent door opening during entering and leaving of a mine car can be met, the collision between the sealing door and the mine car can be can reduced, the safety of the sealing door is increased, freshness of air in the coal mines can beimproved, the energy of the coal mines can be improved, fully-automated operation of an actuator is achieved, and a more convenient working environment is provided for miners.

Description

technical field [0001] The invention relates to the field of coal mines, in particular to an air pressure control device for a damper used in coal mines. Background technique [0002] Coal mine is an area where human beings exploit coal resources in coal-rich mining areas. It is generally divided into underground coal mines and open-pit coal mines. When the distance from the surface is very short, it is generally chosen to directly strip the surface soil layer to excavate coal. This is an open-pit coal mine. Most of the coal mines in my country belong to underground coal mines. The scope of coal mines includes a large area above ground, underground and related facilities. The reasonable space excavated when excavating geological layers rich in coal usually includes roadways, shafts and mining faces, etc. Coal is the most important solid fuel and a kind of combustible organic rock. It is formed by a certain geological age The luxuriant plants that grow gradually accumulate into...

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Problems solved by technology

[0005] The purpose of the present invention is to provide an air pressure control device for a damper used in coal mines, to solve the above-mentioned background technology that cannot reduce the friction between the airtight door and the door frame, cannot cope with the need for frequent door opening when entering and leaving the mine car, and cannot reduce the friction between the airtight door and the door frame. The collision of the mine car cannot increase the safety of the airtight door, and cannot improve the freshness of the air in the mine, cannot make full use of the energy of the mine, cannot realize the fully automatic operation of the actuator, and cannot provide a more convenient working environment for the miners And other issues

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