Self-restoring type explosion door applied to inclined shaft and horizontal shaft

Abstract

The invention discloses a self-restoring type explosion door applied to an inclined shaft and a horizontal shaft. A door frame is fixed on a shaft opening chamber foundation; a support column is fixed on the door frame; a left explosion door leaf and a right explosion door leaf are symmetrically connected to the support column via hinges; the left explosion door leaf and the right explosion door leaf are symmetrically opened in reverse directions; self-locking devices are symmetrically mounted on the left explosion door leaf and the right explosion door leaf; symmetrical guide brackets are mounted on the outer side of a shaft opening cavity; a pulley block is fixed on each guide bracket; a counterweight device heavy hammer is arranged at the tail end of each guide bracket. The self-restoring type explosion door has the advantages that the ventilation safety can be automatically restored after mine shafts are exposed, and the safety of workers in the mine shafts can be guaranteed.

Description

technical field [0001] The invention relates to a self-returning explosion-proof door for inclined shafts and flat shafts in coal mines, in particular to a self-resetting explosion-proof door for inclined shafts and flat shafts. Background technique [0002] At present, the explosion-proof doors of inclined shafts and flat shafts in my country's coal mines generally adopt ordinary steel structure explosion-proof doors. Once an explosion occurs in the shaft, the explosion-proof doors will be easily damaged and blown away from the wellhead, and cannot be repaired and used in a short period of time. Restoration of ventilation has brought potential safety hazards to the safety of ventilation in the well. Thereby endangering the life safety of underground personnel, increased the accident rate of coal mine. For this reason, coal mines need self-recovering more secure explosion-proof doors in the safety facilities of ventilation shafts. Contents of the invention [0003] The pu...

AI Technical Summary

Problems solved by technology

[0002] At present, the explosion-proof doors of inclined shafts and flat shafts in my country's coal mines generally adopt ordinary steel structure explosion-proof doors. Once an explosion occurs in the shaft, the explosion-proof doors will be easily destroyed and blown away from the wellhead, and cannot be repaired and used in a short time. The recovery of ventilation has brought safety hazards to the safety of ventilation in the well

Thereby endangering the life safety of underground personnel, increased the accident rate of coal mine

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