CN214660304U - Unbalanced pincer type locking device for coal mine air door - Google Patents

Abstract

The utility model relates to an unbalanced pincer type blocking device of colliery air door. For filling prior art blank, this unbalanced pincers type blocking device of colliery air door includes A air door, B air door and air door blocking device, blocking device includes pincerlike to ring and two counter weight guide bars, pincerlike includes a pair of pincers clamping ring to the ring, pincers clamping ring includes two semicircle rings, two semicircle rings are connected by a linking steel plate, two liang of relative of semicircle ring, form two pairs of rings, two counter weight guide bars set up respectively under two pairs of rings, when one of them air door is opened, the counter weight guide bar that links to each other goes upward, extrude inside the corresponding ring, strut this pair of ring, two pincers press and encircle the articulated shaft and rotate, another pair of ring is closed, can prevent another counter weight guide bar from going upward, prevent that another air door from opening. The utility model discloses can effectively avoid the twice air door to open the air current short circuit that causes simultaneously, extensively be applicable to in the mine tunnel.

Description

Unbalanced pincer type locking device for coal mine air door

Technical Field

The utility model relates to an unbalanced pincer type blocking device of colliery air door.

Background

In coal mining operations, the normal operation of a ventilation system is of great importance. Firstly, in a normal ventilation system, the stable wind flow can ensure that underground personnel can normally breathe the required oxygen; secondly, the normal ventilation system can discharge harmful gas generated underground, so that production is guaranteed; finally, the normal ventilation system can adjust the underground climate condition and create a good working environment. As coal mines are mined and built for many years, a plurality of roadways and working wind-demanding places are arranged underground, and various ventilation facilities, a sealing wall, a plate sealing wall, an air door, an air adjusting window and the like are required to be built for maintaining the stability of a ventilation system in the daily safety management of mines, so as to ensure the reliability and the effectiveness of the underground ventilation system. The mining air door has the functions of ensuring safe production of a mine, ensuring the stability of a ventilation system and reducing ineffective air leakage. The wind flow of the roadway is cut off, the manual opening is utilized, the self closing is realized by means of the spring tension and the wind flow pressure difference, and the self-closing type wind flow power station is usually arranged in the roadway for pedestrians or the roadway with less driving times. The two air doors are opened simultaneously, which causes short circuit of wind current and damages a ventilation system, so that the wind current which should travel according to the specified route is not traveled according to the original route, and no wind or breeze is caused in the underground part area, gas is over-limited or accumulated, and accidents are possibly caused.

The underground running paths of the wind flow are dispersed, the wind flow is calculated according to actual conditions, the flowing direction and the wind volume are changed, and the adjustment mode is to block or adjust the wind flow through temporary or permanent ventilation facilities of the building. The underground air doors are constructed and selected, the underground air doors are selected from positions which are relatively straight on the wall of the roadway, relatively small in bending degree and suitable in distance between the two air doors, and therefore the coal mine air doors are connected through air door ropes to meet the interlocking requirement between the two air doors. In daily use and operation, the air door is opened at a small angle simultaneously due to the air flow pressure difference and two air doors caused by misoperation of workers, so that the air flow route is changed, the ventilation system is disordered, potential hidden dangers are caused to the safety production of a coal mine, and the problem that the air door locking is necessary to be solved is solved.

The existing air door interlocking device mostly adopts a complex electric appliance mechanism, and a mining intrinsic safety electric appliance is required to be adopted, so that the structure is complex, the cost is high, and the safety is not high.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is how to fill the above-mentioned white appearance of prior art, provide a pure mechanical structure's the unbalanced pincer type blocking device of colliery air door.

For solving above-mentioned technical problem, this unbalanced tong-type blocking device of colliery air door includes A air door, B air door and air door blocking device, its characterized in that: the air door locking device is of a pure mechanical structure and comprises two middle fixed pulleys, two side fixed pulleys, two air door ropes and a locking device, wherein the locking device comprises a clamp-shaped pair of circular rings and two balance weight guide rods, the clamp-shaped pair of circular rings comprises a pair of clamp pressing rings, the clamp pressing rings comprise two semicircular rings, the two semicircular rings are connected through a connecting steel plate, two connecting steel plate inner sides of the pair of clamp pressing rings are fixedly connected with a hinged pipe barrel respectively, the axes of the hinged pipe barrels on the two connecting steel plate inner sides are overlapped and mutually staggered, and are hinged together through a same hinged shaft, the semicircular rings at the two ends of the two connecting steel plates are opposite in pairs to form two pairs of circular rings, the locking device is fixed on a matched roadway side wall through a connecting steel plate, the two middle fixed pulleys are fixed on the matched roadway side wall above the locking device, and the two side fixed pulleys are fixed on the adjacent air door A respectively, On the adapted tunnel lateral wall of B air door, two counter weight guide bars are the cylinder, and its top is the taper shape, and two air door rope one end are fixed respectively on two counter weight guide bar tops, and the other end strides across middle fixed pulley and corresponding side fixed pulley respectively after, be respectively on A air door, B air door, two counter weight guide bars set up respectively under two pairs of rings, when one of them air door is opened, go upward rather than the counter weight guide bar that links to each other, extrude the corresponding inside to the ring, strut this pair of ring, two pincers pressures and rotate around the articulated shaft, and another pair of rings are closed together, can prevent that another counter weight guide bar from going upward, prevent that another air door opens, and the lower extreme of every counter weight guide bar all is equipped with the spacer pin.

By the design, when one side opens the door, the locking device is driven by the air door rope to lock the other end of the locking device instantly, so that the other air door can not be locked and opened; the door is closed, the air door rope automatically resets under the action of the counterweight guide rod, and the limiting pin can effectively prevent the counterweight guide rod from being separated.

Preferably, a sliding sleeve rod is connected in series with the corresponding position of the air door rope connected with the air door B, a through hole is formed in a matched narrow wall or a door frame for installing the air door B, a sliding sleeve pipe is arranged in the through hole, and the sliding sleeve rod is arranged in the sliding sleeve pipe in a penetrating mode and can move in the sliding sleeve pipe under the driving of the air door rope. The contact surface between the sliding sleeve rod and the sliding sleeve pipe is preferably an air-tight smooth metal surface. By the design, the air-tight effect is good, and the service life is long.

The unbalanced clamp type locking device for the coal mine air doors effectively avoids the potential safety hazard of air flow short circuit caused by the simultaneous opening of two air doors, ensures the stability of a ventilation system under a coal mine, and effectively improves the disaster prevention and resistance capability of the mine; meanwhile, the device is of a pure mechanical structure, does not need electricity, is safe and energy-saving, and is widely applicable to underground roadways of various coal mines.

Drawings

The unbalanced clamp type locking device of the coal mine air door of the utility model is further explained with the attached drawings as follows:

FIG. 1 is a schematic structural view of a first embodiment of the unbalanced clamp latch of a coal mine air door;

FIG. 2 is a top view of a first embodiment of the present coal mine damper unbalanced pincer lock;

FIG. 3 is a schematic view of the present unbalanced clamp latch for a coal mine damper;

FIG. 4 is a top plan view of the latch of the present coal mine damper unbalanced pincer latch.

In the figure: the air door comprises an air door A1, an air door B2, a middle fixed pulley 3, a side fixed pulley 4, an air door rope 5, a counterweight guide rod 6, a clamping ring 7, a semicircular ring 71, a connecting steel plate 72, a hinged pipe barrel 73, a hinged shaft 8, a roadway side wall 9, a limiting pin 10, a sliding sleeve rod 11 and a sliding sleeve pipe 12.

Detailed Description

The first implementation mode comprises the following steps: as shown in figure 1, the unbalanced clamp type locking device for the coal mine air door comprises an air door 1A, an air door 2B and an air door locking device, wherein the air door locking device is of a pure mechanical structure and comprises two middle fixed pulleys 3, two side fixed pulleys 4, two air door ropes 5 and a locking device, the locking device comprises a clamp-shaped pair circular ring and two counterweight guide rods 6, the clamp-shaped pair circular ring comprises a pair of clamp rings 7, each clamp ring 7 comprises two semicircular rings 71, the two semicircular rings 71 are connected through a connecting steel plate 72, the inner sides of the two connecting steel plates 72 of the pair of clamp rings 7 are fixedly connected with a hinge pipe barrel 73 respectively, the axes of the hinge pipe barrels 73 at the inner sides of the two connecting steel plates 72 are superposed and staggered, and hinged together through the same hinge shaft 8, the semicircular rings 71 at two ends of the two connecting steel plates 72 are opposite to form two pairs of circular rings, the locking device is fixed on an adapted roadway side wall 9 through a connecting steel plate 72, two middle fixed pulleys 3 are fixed on the adapted roadway side wall 9 above the locking device, two side fixed pulleys 4 are respectively fixed on the adapted roadway side wall 9 adjacent to an air door A1 and an air door B2, two counterweight guide rods 6 are cylinders, the tops of the counterweight guide rods are conical, one ends of two air door ropes 5 are respectively fixed at the top ends of the two counterweight guide rods 6, the other ends of the two air door ropes respectively cross over the middle fixed pulley 3 and the corresponding side fixed pulley 4 and then are respectively tied on the air door A1 and the air door B2, the two counterweight guide rods 6 are respectively arranged under two pairs of opposite rings, when one air door is opened, the counterweight guide rod 6 connected with the air door ascends to extrude into the corresponding opposite rings to prop open the opposite rings, the two clamp hinge shafts 7 rotate around 8, and the other pair of opposite rings are closed, the other counterweight guide rod 6 can be prevented from ascending, the other air door is prevented from being opened, and the lower end of each counterweight guide rod 6 is provided with a limiting pin 10.

The corresponding position of the air door rope connected with the air door B is connected with a sliding sleeve rod 11 in series, a through hole is formed in a matched narrow wall or a door frame for installing the air door B2, a sliding sleeve pipe 12 is arranged in the through hole, the sliding sleeve rod 11 is arranged in the sliding sleeve pipe 12 in a penetrating mode and can be driven by the air door rope 5 to move in the sliding sleeve pipe 12.

Claims (2)

1. The utility model provides an unbalanced clamp type blocking device of colliery air door, includes A air door, B air door and air door blocking device, its characterized in that: the air door locking device is of a pure mechanical structure and comprises two middle fixed pulleys, two side fixed pulleys, two air door ropes and a locking device, wherein the locking device comprises a clamp-shaped pair of circular rings and two balance weight guide rods, the clamp-shaped pair of circular rings comprises a pair of clamp pressing rings, the clamp pressing rings comprise two semicircular rings, the two semicircular rings are connected through a connecting steel plate, two connecting steel plate inner sides of the pair of clamp pressing rings are fixedly connected with a hinged pipe barrel respectively, the axes of the hinged pipe barrels on the two connecting steel plate inner sides are overlapped and mutually staggered, and are hinged together through a same hinged shaft, the semicircular rings at the two ends of the two connecting steel plates are opposite in pairs to form two pairs of circular rings, the locking device is fixed on a matched roadway side wall through a connecting steel plate, the two middle fixed pulleys are fixed on the matched roadway side wall above the locking device, and the two side fixed pulleys are fixed on the adjacent air door A respectively, On the adapted tunnel lateral wall of B air door, two counter weight guide bars are the cylinder, and its top is the taper shape, and two air door rope one end are fixed respectively on two counter weight guide bar tops, and the other end strides across middle fixed pulley and corresponding side fixed pulley respectively after, be respectively on A air door, B air door, two counter weight guide bars set up respectively under two pairs of rings, when one of them air door is opened, go upward rather than the counter weight guide bar that links to each other, extrude the corresponding inside to the ring, strut this pair of ring, two pincers pressures and rotate around the articulated shaft, and another pair of rings are closed together, can prevent that another counter weight guide bar from going upward, prevent that another air door opens, and the lower extreme of every counter weight guide bar all is equipped with the spacer pin.

2. The coal mine damper unbalanced clamp latch of claim 1, wherein: the sliding sleeve rod is connected with the corresponding position of the air door rope connected with the air door B in series, a through hole is formed in a matched narrow wall or a door frame for installing the air door B, a sliding sleeve pipe is arranged in the through hole, and the sliding sleeve rod is arranged in the sliding sleeve pipe in a penetrating mode and can move in the sliding sleeve pipe under the driving of the air door rope.

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