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Air door locking device

A technology of locking device and air door, which is applied in mine/tunnel ventilation, mining equipment, earth-moving drilling, etc., can solve the problems of difficult maintenance and easy damage of air door locking device, and achieve high safety and stability, easy maintenance and maintenance, The effect of increasing friction

Inactive Publication Date: 2016-05-04
济宁矿业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a damper locking device, which solves the problems of difficult maintenance and easy damage of ordinary damper locking devices

Method used

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  • Air door locking device

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Embodiment Construction

[0015] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0016] refer to figure 1 , a damper locking device described in this specific embodiment, the locking roller 2 is symmetrically arranged on the fixed plate 1, the positioning piece 3 is also symmetrically arranged on the fixed plate 1, the upper end of the return spring 4 is connected to the positioning piece 3, and the lower end of the return spring 4 is connected to the The upper end of the piece 5 is connected, the lower end of the connecting piece 5 is connected with the floating roller 6, the floating roller 6 is located above the locking roller 2, and the fixed plate 1 is symmetrically provided with a rotating shaft 7, which is located inside the two locking rollers 2, and the upper end of the locking rod A8 is connected to the The rotating shaft of the floating roller 6 on the right side is rotatably connected, the lower part of the locking lever ...

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Abstract

The invention relates to an air door locking device. Locking rollers are symmetrically arranged on a fixing plate, positioning pieces are also symmetrically arranged on the fixing plate, the upper ends and the lower ends of reset springs are connected with the positioning pieces and the upper ends of connecting pieces respectively, the lower ends of the connecting pieces are connected with floating rollers, the floating rollers are located above the locking rollers, rotating shafts are symmetrically arranged on the fixing plate, the upper end of a locking rod A is connected with the right floating roller in a rotating mode, the lower portion of the locking rod A is connected with the left rotating shaft in a rotating mode, the upper end of a locking rod B is connected with the left floating roller in a rotating mode, the lower portion of the locking rod B is connected with the right rotating shaft in a rotating mode, pulleys are arranged on the upper portions of weight balancing barrels, one end of each steel wire rope is connected with the fixing plate, the other ends of the steel wire ropes pass through the pulleys, the floating rollers and the locking rollers in sequence and then are connected with an air door, grooves are evenly formed in the locking rollers, the lower end of the locking rod A is matched with the grooves in the left locking roller, and the lower end of the locking rod B is matched with the grooves in the right locking roller. The mechanical air door locking device has the advantages of being high in safety and stability and convenient to maintain.

Description

technical field [0001] The invention relates to a locking device, in particular to a damper locking device. Background technique [0002] The damper for underground coal mines is a facility used to cut off the air flow or adjust the air volume in the roadways that need to be open to traffic and pedestrians. A group of 2 or more dampers are all closed under normal conditions, and only open when traffic is required, and only 1 damper can be opened at the same time, if 2 dampers are opened at the same time, that is Cause air flow short circuit, cause the disorder of ventilation system, so "Coal Mine Safety Regulations" clearly stipulates: It is strictly forbidden to open two dampers at the same time. The function of the damper locking device is that when one damper is opened, the other cannot be opened, and only when it is closed, the other damper can be opened. The common damper locking device that is usually used has the disadvantages of difficult maintenance and easy damag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/10
CPCE21F1/10
Inventor 王绪奎孙磊王召强王建华曹亚萍
Owner 济宁矿业集团有限公司
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