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Downhole air door locking device

A technology of locking device and air door, which is applied in the direction of mining equipment, mine/tunnel ventilation, mining equipment, etc., can solve the problems of low structural stability of steel wire rope and pulley, increase equipment cost, high cost, etc., and reduce installation and post-production The effect of maintenance cost, convenient installation and simple structure

Active Publication Date: 2019-02-19
张效春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent application number CN201520158409.6 discloses a damper locking device, which uses a pulley block and a wire rope structure. Although the structure is simple, the stability of the wire rope and pulley structure is not high and is easily damaged; the patent application number is CN201210486708.3 discloses a damper The locking device and damper locking system use the air source as the power source, and a large number of control valves and cylinders are used to control the opening of the damper accurately. However, if it is used in large quantities in coal mines, the cost is too high
These locking devices are relatively complex, and more or less depend on the stability of the locking device to a certain extent, and need to use complex components to complete the required functions, which greatly increases the cost of the equipment

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0039] An underground damper locking device, comprising two front and rear dampers that open in opposite directions, a front damper 1 and a rear damper 13, two sets of crank slider four-bar linkage mechanisms and a fixed rod 5 are arranged between the two dampers, and two sets of fixed rods are arranged between the two dampers. The ends are respectively fixed on the door frame of the two dampers near the hinge side. The two groups of crank-slider four-bar linkage mechanisms respectively include connecting rods, a sliding rod fixing device, and a sliding rod, wherein one end of the connecting rod is hinged on a damper, and the other end is hinged with the sliding rod, and the sliding rod passes through the sliding rod fixing device 3 The sliding is fixed on the fixed rod 5, and the sliding and fixing method ensures that the first sliding rod can move horizontally in the front and rear directions, and it only needs to be non-movable in other directions. In order to ensure that t...

Embodiment 2

[0044] An underground damper locking device that opens in the same direction, including two front and rear dampers that open in the same direction, a front damper 1 (push inward) and a rear damper 13 (push outward), and two sets of dampers are arranged between the two dampers. Slider crank four-bar linkage mechanism, wherein a set of rack reverse mechanism is installed on one set of four-bar linkage mechanism of slider crank block, and a limit block 6 is set between two sets of slider four-bar linkage mechanisms of crank slider. The action of one damper drives the directional movement of the four-bar linkage mechanism of the first crank slider to push the limit slider to a fixed position, and the second crank slider mechanism of the other damper is blocked by the rack reverse mechanism, thereby reaching the second crank slider mechanism of the other damper. Damper lock function.

[0045] The four-bar linkage mechanism also includes a fixed rod 5, and the two ends of the fixed ...

Embodiment 3

[0052] An underground reverse damper locking device, comprising two reversely opened dampers at the front and rear, a front damper 1 and a rear damper 13, two groups of crank slider four-bar linkages are arranged between the two dampers, two sets of crank sliders One group of rack reverse mechanism and fixed rod 5 are respectively installed on the block four-bar linkage mechanism, and the fixed rod two ends are respectively fixed on two air doors near the door frame on the hinge side. The two groups of crank-slider four-bar linkage mechanisms respectively include connecting rods and sliding rod racks, wherein one end of the connecting rods is hinged on a damper, and the other end is hinged on the sliding rod racks. A group of rack reverse mechanisms are respectively installed on the two groups of crank slider four-bar linkages, respectively comprising a slide bar rack 10, a reverse rack 11, a gear 9 and a gear fixing pin 8, and a rack reverse mechanism fixing Box 7, wherein th...

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Abstract

The invention provides a downhole air door locking device, which comprises front and rear air doors. Two groups of crank sliding block four-bar linkage mechanisms are arranged between the two air doors, according to the different opening directions of the air doors, groups of rack reverse mechanisms are further installed on the crank sliding block four-bar linkage mechanisms, a limiting block is arranged between two groups of crank sliding block four-bar linkage mechanisms, the limiting sliding block is pushed to a fixed position through directional movement of the first crank sliding block four-bar linkage mechanism driven by the action of opening one of the air doors, and by locking the second crank sliding block four-bar linkage mechanism of the other one of the air doors, the locking function of the other one of the air doors is achieved.

Description

technical field [0001] The invention belongs to the field of coal mine ventilation, and in particular relates to an underground damper locking device. Background technique [0002] The stability of the ventilation system is very important in the process of coal mine safety production. Once the two dampers are opened at the same time, the direction of the airflow will be changed and the airflow will be short-circuited, resulting in a major gas accident. Therefore, the coal mine safety regulations stipulate that in order to prevent personnel and vehicles from opening the damper and causing a short-circuit of the airflow , setting at least two air doors can ensure that there is always one air door (at least one air door) in the closed state in the roadway. [0003] At present, in order to solve the problem that two air doors are opened simultaneously, various coal industry has developed various air door locking devices, although this device is of a great variety, there are also...

Claims

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Application Information

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IPC IPC(8): E21F1/10E21F1/12E21F17/00
CPCE21F1/10E21F1/12E21F17/00
Inventor 张效春王润喜宋彦樊俊鹏王元元
Owner 张效春
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