Mine air door opening and closing device

Abstract

The invention relates to an opening and closing device for a mine air door, wherein the upper plate of the track device has an upper arc-shaped edge, the lower plate has a lower arc-shaped edge, the connector comprises a bracket, a main shaft, an upper bearing and a lower bearing, the main shaft is connected to the bracket, the upper bearing and the lower bearing are respectively arranged on the main shaft, the upper bearing and the upper arc-shaped edge, and the lower bearing and the lower arc-shaped edge are kept in close contact and cooperation, the main shaft is connected to a chain, a transmission wheel is arranged between the upper plate and the lower plate, the chain is arranged on the transmission wheel, a connecting piece is arranged between the upper plate and the lower plate, the connecting piece is arranged along the inner side of the track edge, the connecting piece and the chain are supported and cooperated along the track edge, and the main shaft is hinged with the door body of the air door; the track device, the connector and the chain on the arc-shaped track edge cooperate with each other to drive the air door to open and close, the main shaft runs in an arc shape, the chain runs along the track edge to drag the main shaft, so as to avoid the problems of sagging, loosening, air leakage, low life and high cost caused by the use of a push rod, the opening and closing is smoother, the structure is simple, the installation is convenient, the cost is low and the service life is long.

Description

Technical Field

[0001] The invention relates to air door opening and closing equipment in a mine tunnel. Background Art

[0002] Air gates are installed in lanes open to traffic and pedestrians to block airflow or adjust air volume to ensure mine safety. Mine air gates currently use pneumatic, electric or hydraulic methods to drive the push-pull rod to drive the air gate to close and open around its rotating shaft. The push-pull movement of the push-pull rod and the rotation (arc movement) of the air gate are contradictory and conflicting. During use, the push-pull rod often twists and deforms, resulting in the air gate being unable to close tightly, causing the air gate to become loose and leak. In addition, in the process of the push-pull rod driving the air gate to open and close, there is a downward thrust on the air gate. If this continues for a long time, the air gate will sag, which will also lead to air leakage and loose closure of the air gate, seriously affecting its service life and high cost. Summary of the invention

[0003] In view of the technical problems existing in the background technology, the technical problem solved by the present invention is to provide a mine air door opening and closing device with stable opening and closing operation, long service life, low cost, not easy to sag, and tightly closed.

[0004] To solve the above technical problems, the present invention adopts the following technical scheme: a mine air door opening and closing device, comprising a track device, a connector and a chain, characterized in that the track device comprises an upper plate and a lower plate, the upper plate has an upper arc edge, the lower plate has a lower arc edge, the upper arc edge and the lower arc edge are aligned up and down to form a track edge, the connector comprises a bracket, a main shaft, an upper bearing and a lower bearing, the main shaft is vertically fixedly connected to the bracket, the upper bearing and the lower bearing are respectively arranged on the main shaft, the upper bearing and the upper arc edge are kept in abutment with the lower arc edge, the lower bearing and the lower arc edge are kept in abutment with the lower edge, the two sides of the main shaft are respectively connected to the chain, a transmission wheel is also provided between the upper plate and the lower plate, the chain is arranged on the transmission wheel, and a plurality of connecting parts are also provided between the upper plate and the lower plate, the connecting parts are arranged along the inner side of the track edge, the connecting parts and the chain are supported and matched along the track edge, and the main shaft is hinged to the door body of the air door.

[0005] The connecting piece includes a connecting bolt, and the connecting piece connects the upper plate and the lower plate.

[0006] The door body is located below the lower plate, a shaft sleeve is arranged on the door body, a main shaft matching sleeve is arranged in the shaft sleeve, and the main shaft and the shaft sleeve are relatively rotated and matched.

[0007] The chain is in a closed loop structure, and a tensioning wheel is provided between the upper plate and the lower plate, and the tensioning wheel is connected to the chain.

[0008] The transmission wheel comprises a main wheel and a slave wheel. The main wheel is in transmission connection with the driving device, and the chain is arranged around the main wheel and the slave wheel.

[0009] The bracket includes a top plate, a side plate and a bottom plate connected to each other. The top plate is also provided with an upper auxiliary bearing, which is fitted against the upper side of the upper plate. The bottom plate is also provided with a lower auxiliary bearing, which is fitted against the lower side of the lower plate.

[0010] The main shaft is equipped with a lower fastening nut, which is arranged below the shaft sleeve.

[0011] The main shaft is equipped with an upper fastening nut, which cooperates with the bracket.

[0012] The upper plate and the lower plate are made of steel plates, iron plates or stainless steel plates.

[0013] Chains were replaced with ropes.

[0014] The beneficial effects of the present invention are that the mine damper opening and closing device adopts a track device, a connector and a chain on the side of an arc track to cooperate with each other to drive the damper to open and close, wherein the main shaft of the connector runs in an arc shape, and the chain runs along the side of the track to drag the main shaft, thereby avoiding the problems of sagging, loosening, air leakage, short life and high cost caused by the push rod. In addition, the mine damper opening and closing device opens and closes more smoothly, has a simple structure, is easy to install, has low cost and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following describes the relevant details and working principles of the implementation mode and embodiments of the present invention in conjunction with the accompanying drawings.

[0016] Figure 1 The structure of the present invention is schematically shown Figure 1 , overlooking angle, omitting the upper plate.

[0017] Figure 2 The structure of the present invention is schematically shown Figure 2 , look at the structural diagram. DETAILED DESCRIPTION

[0018] Referring to the accompanying drawings, the mine air door opening and closing device in this embodiment includes a track device 1, a connector 2 and a chain 3. The track device includes an upper plate 4 and a lower plate 5. The upper plate 4 has an upper arc edge, and the lower plate 5 has a lower arc edge 51. The upper arc edge and the lower arc edge are aligned up and down to form a track edge. The structure of the upper plate and the lower plate is simple, convenient to process, practical, and low in cost. The support structure of the track edge is good; the upper plate and the lower plate are made of steel plates, iron plates or stainless steel plates, which are practical, have a long service life, are easy to process, and can be directly cut and formed during production; the connector The device 2 includes a bracket 6, a main shaft 7, an upper bearing 8 and a lower bearing 9. The main shaft 7 is vertically fixedly connected to the bracket 6. The upper bearing 8 and the lower bearing 9 are respectively arranged on the main shaft 7. The upper bearing 8 and the lower bearing 9 will rotate on the main shaft 7. The upper bearing is kept against the upper arc edge, and the lower bearing is kept against the lower arc edge. The two sides of the main shaft 7 are respectively connected to the chain 3, and the main shaft 7 is driven by the chain 3 so that the upper bearing and the lower bearing on the main shaft are respectively against the upper arc edge and the lower arc edge to move; a transmission wheel 10 is also provided between the upper plate and the lower plate. The chain is arranged on the transmission wheel, and the transmission wheel cooperates with the operation of the chain; a number of connectors 14 are also arranged between the upper plate and the lower plate, and the connectors are arranged along the inner side of the track edge, and the connectors are arranged as close to the track edge (i.e., the edge of the upper arc edge and the lower arc edge) as possible. The connectors and the chain support along the track edge, that is, the connectors are arranged to form a structure that supports the chain, and cooperate with the support chain to run along the track edge, and during the chain operation process, the main shaft is driven to move along the arc track edge more smoothly, and the running trajectory is an arc. When arranging, several can be evenly arranged along the arc. The main shaft 7 is hinged with the door body 15 of the damper, and the main shaft has an arc-shaped running trajectory to drive the damper door body to rotate, so as to realize the opening and closing of the damper. The mine damper opening and closing device adopts a track device, a connector and a chain on the side of an arc track to cooperate with each other to drive the damper to open and close, avoiding the problems of sagging, loosening, air leakage, short life and high cost caused by the push rod. In addition, the mine damper opening and closing device opens and closes more smoothly, has a simple structure, is easy to install, has low cost and a long service life.

[0019] Among them, the connecting member 14 includes a connecting bolt, which connects the upper plate and the lower plate. In addition to cooperating with the support chain to run, the connecting member can also cooperate to connect the upper plate and the lower plate to enhance the strength of the track device. It is easy to process and is economical and practical.

[0020] The door body is located below the lower plate, and a shaft sleeve 16 is provided on the door body. The main shaft matching sleeve is provided in the shaft sleeve, and the main shaft and the shaft sleeve are relatively rotated and matched, so that the main shaft rotates in the shaft sleeve and cooperates to drive the damper door body to rotate.

[0021] The chain is in a closed loop structure, and a tensioning wheel 17 is provided between the upper plate and the lower plate. The tensioning wheel is connected to the chain 3, and the chain is tensioned by the tensioning wheel.

[0022] The transmission wheel 10 includes a main wheel and a slave wheel, the main wheel is connected to a driving device (such as a motor) by transmission, and a chain is arranged around the main wheel and the slave wheel. The main wheel is driven by the driving device to cooperate with the chain to run. In addition, the chain can be replaced by a rope.

[0023] The bracket 6 in this embodiment includes a top plate 17, a side plate 18 and a bottom plate 19 connected to each other, which can be connected by fasteners or welding. An upper auxiliary bearing 20 is also provided on the top plate 17, and the upper auxiliary bearing is arranged to cooperate with the upper side of the upper plate 4. A lower auxiliary bearing 21 is also provided on the bottom plate 19, and the lower auxiliary bearing is arranged to cooperate with the lower side of the lower plate. The upper auxiliary bearing cooperates with the upper plate so that the bracket and the main shaft will not fall. Similarly, the lower auxiliary bearing cooperates with the lower plate so that the bracket and the main shaft will not rise, so that the main shaft runs stably without jumping up and down, and avoids the problem of sagging and rising of the damper body connected with the main shaft.

[0024] The main shaft is provided with an upper fastening nut 22, which cooperates with the bracket. The main shaft is provided with a lower fastening nut 23, which is arranged below the shaft sleeve. It is convenient for installation and can also serve as a limit.

Claims

1. A mine air door opening and closing device, comprising a track device, a connector and a chain, characterized in that: The track device includes an upper plate and a lower plate, the upper plate has an upper arc-shaped edge, the lower plate has a lower arc-shaped edge, the upper arc-shaped edge and the lower arc-shaped edge are aligned up and down to form a track edge, the connector includes a bracket, a main shaft, an upper bearing and a lower bearing, the main shaft is vertically fixedly connected to the bracket, the upper bearing and the lower bearing are respectively arranged on the main shaft, the upper bearing and the upper arc-shaped edge are kept in abutment with the lower arc-shaped edge, the lower bearing and the lower arc-shaped edge are kept in abutment with the lower arc-shaped edge, the two sides of the main shaft are respectively connected with chains, a transmission wheel is also provided between the upper plate and the lower plate, the chain is arranged on the transmission wheel, and a plurality of connecting parts are also provided between the upper plate and the lower plate, the connecting parts are arranged along the inner side of the track edge, the connecting parts and the chain are supported and matched along the track edge, and the main shaft is hinged to the door body of the damper.

2. The mine air door opening and closing device according to claim 1, characterized in that: The connecting piece includes a connecting bolt, and the connecting piece connects the upper plate and the lower plate.

3. The mine air door opening and closing device according to claim 1, characterized in that: The door body is located below the lower plate, a shaft sleeve is arranged on the door body, a main shaft matching sleeve is arranged in the shaft sleeve, and the main shaft and the shaft sleeve are relatively rotated and matched.

4. The mine air door opening and closing device according to claim 1, characterized in that: The chain is in a closed loop structure, and a tensioning wheel is provided between the upper plate and the lower plate, and the tensioning wheel is connected to the chain.

5. The mine air door opening and closing device according to claim 1, characterized in that: The transmission wheel comprises a main wheel and a slave wheel. The main wheel is in transmission connection with the driving device, and the chain is arranged around the main wheel and the slave wheel.

6. The mine air door opening and closing device according to claim 1, characterized in that: The bracket includes a top plate, a side plate and a bottom plate connected to each other. The top plate is also provided with an upper auxiliary bearing, which is fitted against the upper side of the upper plate. The bottom plate is also provided with a lower auxiliary bearing, which is fitted against the lower side of the lower plate.

7. The mine air door opening and closing device according to claim 3, characterized in that: The main shaft is equipped with a lower fastening nut, which is arranged below the shaft sleeve.

8. The mine air door opening and closing device according to claim 1, characterized in that: The main shaft is equipped with an upper fastening nut, which cooperates with the bracket.

9. The mine air door opening and closing device according to claim 1, characterized in that: The upper plate and the lower plate are made of steel plates, iron plates or stainless steel plates.

10. The mine air door opening and closing device according to claim 1, characterized in that: Chains were replaced with ropes.

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