Guiding buffering anti-explosion device for vertical air shaft

A technology of explosion-proof devices and vertical air shafts, which is applied in mining devices, ventilation of mines/tunnels, mining equipment, etc., can solve the problems of low anti-explosion ability and difficult reset of explosion-proof doors, and achieve the goal of improving reliability and anti-explosion ability Effect

Active Publication Date: 2014-01-29
HENAN POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to aim at the defects of the existing explosion-proof doors such as low anti-explosion ability and difficulty in reset, and propose a guidin

Method used

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  • Guiding buffering anti-explosion device for vertical air shaft
  • Guiding buffering anti-explosion device for vertical air shaft
  • Guiding buffering anti-explosion device for vertical air shaft

Examples

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Example Embodiment

[0042] The pulley frame 7, the wire rope 8 and the counterweight 9 constitute a counterweight mechanism. There are two implementations of the counterweight mechanism. The first embodiment: the pulley frame is fixed on the outer frame column 202; the second embodiment: the current blast door counterweight setting method is used, and 3-4 groups of independent counterweight mechanisms are set.

[0043] The present invention makes full use of the existing explosion-proof door facilities, and is equipped with rigid guiding restraint and buffer energy absorption devices to improve the reliability and anti-explosion ability of the explosion-proof door. The installation and construction of the inner and outer frames, the buffer umbrella, and the counterweight of the present invention have minimal impact on the normal ventilation of the mine, and is beneficial to the implementation of the ventilation shaft explosion-proof door in the production mine.

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Abstract

The invention discloses a guiding buffering anti-explosion device for a vertical air shaft. The device is mainly composed of an outer frame, an inner frame, a buffer umbrella, a central guiding column and a counter weight mechanism. Two vertical columns (201) of the outer frame are fixed on a shaft head base (1) respectively, a guiding cylinder (5) is arranged between two beams (202) of the outer frame, vertical columns (301) of the inner frame are mounted on the inner sides of the vertical columns of the outer frame in a vertical sliding mode, the bottom ends of the vertical columns of the inner frame are fixed with a door (12), ribs (601) of the buffer umbrella are fixed below the beams of the outer frame, a base plate (602) and a buffering block (603) are fixed below the ribs, and the central guiding column penetrates the guiding cylinder to be fixedly connected with the buffering umbrella and the door. According to the device, rigid guiding constraints and a buffering energy absorption apparatus are added, so that the reliability and the anti-explosion capacity of the anti-explosion door are improved, effects on normal ventilation of the shaft are small, and improvements of air shaft anti-explosion doors of production shafts are facilitated.

Description

Technical field [0001] The invention relates to a protective device for safe opening and resetting of a coal mine vertical air shaft explosion-proof door under the action of an explosion shock wave, and belongs to the technical field of mine ventilation safety. Background technique [0002] According to the requirements of my country's safety production regulations, explosion-proof doors should be installed at the mouth of the air shaft in the coal mine ventilation system. The function of the explosion-proof door is that when a gas and coal dust explosion occurs underground, the explosion shock wave rushes through the explosion-proof door to relieve the pressure, thereby ensuring that the main fan of the mine is not damaged. At present, the vertical air shaft of coal mines in our country uses an umbrella cover type explosion-proof door, which is composed of a door body, a sealed oil tank, a pulley frame, a counterweight, etc. Its explosion-proof pressure relief mechanism is: when...

Claims

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Application Information

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IPC IPC(8): E21F17/12E21F1/16
Inventor 孙玉宁宋维宾王永龙王振锋
Owner HENAN POLYTECHNIC UNIV
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