An unlocking device for coal mine damper lock

Abstract

The invention discloses an unlocking device for a locked coal mine air door, and belongs to the technical field of coal mine ventilation safety. The unlocking device is connected with a interlocking device to be used. The interlocking device is connected with the air door after a steel wire rope is guided through a guiding pulley. The unlocking device comprises a base, a pin and a rotation handle. The base comprises a steel fixing piece and a positioning block. A through hole is formed in the steel fixing piece. The positioning block is provided with a shaft hole. The positioning block is arranged on an air door plate and located below the steel fixing piece. The pin comprise a pin shaft and a lock pin, one end of the lock pin is of an annular structure, the other end of the lock pin is connected with the steel wire rope, and the pin shaft penetrates the through hole of the steel fixing piece, the annular structure and the shaft hole. The rotation handle comprises a first handle body, a second handle body and special-shaped pins, wherein the first handle body and the second handle body are arranged on the air door plate through the special-shaped pins, and the first handle body is pressed and attached to the steel fixing piece through the lock pin. By means of the unlocking device, the hidden danger that due to the fault of a steel wire rope interlocking device, people cannot safely pass is avoided, and a reliable guarantee is provided for a coal mine safety channel.

Description

technical field [0001] The invention belongs to the technical field of coal mine ventilation safety, and in particular relates to an unlocking device for locking a coal mine damper. Background technique [0002] Coal mine dampers are usually installed in underground roadways to separate fresh air from dirty air, but the dampers can be used for pedestrians and traffic. As a coal mine ventilation structure, the coal mine air door is required to be equipped with no less than two air doors, and the two air doors must be equipped with interlocking devices to prevent the two air doors from opening at the same time and causing a short circuit of the air flow. [0003] The dampers used in traditional coal mines mainly include ordinary dampers and automatic dampers. Although automatic dampers are relatively easy to achieve electrical locking, they are not only expensive, but also due to the poor underground environment of coal mines, which are subject to water vapor, water, coal dust...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a coal mine damper locking unlocking device with simple structure, easy processing and reliable performance in view of the potential safety hazards existing in the current coal mine damper interlocking device, so as to solve the problem that the staff cannot timely fix the damper interlocking device when the damper interlocking device breaks down. Problem with opening the damper for escape

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