Underground air door locking device

Abstract

The invention relates to the technical field of locking devices, and discloses an underground air door locking device which comprises a mine tunnel, two door frames are installed on the inner wall of the mine tunnel, a front air door and a rear air door which are oppositely arranged are hinged to the interiors of the two door frames correspondingly, and crank arms are fixedly installed on the outer surfaces of the sides, away from each other, of the front air door and the rear air door correspondingly; a mounting plate is fixedly mounted on the inner wall of the side, located between the two door frames, of the mine tunnel, a barrel base capable of moving left and right is slidably mounted on the outer surface of the mounting plate, a partition plate is fixedly mounted on the inner wall of the middle of the barrel base, and a channel is reserved between the bottom end of the partition plate and the bottom wall of the barrel base. When the front air door is just pushed, the right balancing weight can lock the rear air door when the right balancing weight is just lifted, compared with the prior art, the problem that the rear air door can only be locked after the front air door is opened for a period of time can be avoided, and it is ensured that air flow in a mine tunnel is not short-circuited.

Description

Technical Field

[0001] The present invention relates to the technical field of locking devices, and in particular to an underground air door locking device. Background Art

[0002] In the ventilation system of coal mines, air dampers are required according to ventilation needs. In order to avoid ventilation during pedestrians and vehicles, two adjacent air dampers are generally set, one is open and the other is closed. The spring-type air damper locking device currently used in coal mines cannot completely lock the air damper due to the deformability of the spring. When one air damper is opened, the other air damper can still open a small gap, causing a short circuit between the inlet and return air, which may cause a short circuit in the airflow and directly endanger the safety production underground. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an underground air door locking device.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] The door lock device according to claim 1, wherein the two doors are respectively hingedly provided with a front door and a rear door which are arranged opposite to each other, and the outer surfaces of the front door and the rear door which are away from each other are fixedly provided with a crank arm, and the inner wall of the mine passage which is located at the middle position of the two door frames is fixedly provided with a mounting plate, and a bucket seat which can be moved left and right is slidably provided on the outer surface of the mounting plate, and a partition is fixedly provided on the inner wall in the middle position of the bucket seat, and a channel is left between the bottom end of the partition and the bottom wall of the bucket seat, and the partition divides the interior of the bucket seat into a left chamber and a right chamber, and a right counterweight block and a left counterweight block are respectively slidably provided in the interiors of the right chamber and the left chamber, and steel wire ropes are respectively fixedly provided between the top ends of the right counterweight block and the left counterweight block and the crank arms on the front door and the rear door, and the steel wire ropes are arranged through the door frames, and a locking tongue is rotatably provided on the top end of the partition.

[0006] As a further solution of the present invention, pistons are fixedly mounted at the bottom ends of the right counterweight block and the left counterweight block, and the bottom of the barrel seat is filled with hydraulic oil.

[0007] As a further solution of the present invention, two groups of support mechanisms for guiding two steel ropes respectively are fixedly installed on the top of the barrel seat. The support mechanism includes a support arm fixedly installed on the top of the barrel seat, and a guide wheel is rotatably installed on the top of the support arm, and the steel rope passes around the guide wheel.

[0008] As a further solution of the present invention, a translation mechanism is installed between the right counterweight block and the left counterweight block and the bucket seat, and the translation mechanism includes a fixed block fixedly installed on the back side of the bucket seat, a spline shaft is rotatably installed on the outer surface of the fixed block, a first gear is fixedly installed on the outer surface of the spline shaft, and a second gear is also rotatably installed on the outer surface of the spline shaft, a plurality of tooth grooves are vertically opened on the outer surfaces of the right counterweight block and the left counterweight block close to the fixed block, the second gear is meshed with the tooth grooves, and a keying mechanism for keying the spline shaft and the second gear is installed on the outer surface of the bucket seat.

[0009] As a further solution of the present invention, a rack is fixedly installed on the inner wall of the mine tunnel on one side close to the mounting plate, and the first gear is meshed with the second rack.

[0010] As a further solution of the present invention, the keying mechanism includes an electric telescopic rod fixedly mounted on the outer surface of the barrel seat, the telescopic end of the electric telescopic rod is rotatably mounted with a turntable, and the outer surface of the turntable away from the electric telescopic rod is evenly and fixedly mounted with a plurality of splines matching the spline shaft in the circumferential direction, the splines are inserted into keyways on the spline shaft, and a slot matching the splines is provided on the inner side of the second gear.

[0011] As a further solution of the present invention, the weights of the right counterweight block and the left counterweight block are equal, and the top ends of the right counterweight block and the left counterweight block in the horizontal position are both against the locking tongue.

[0012] As a further solution of the present invention, a fixed pulley is installed on the inner wall of the mine tunnel close to the door frame, and the two steel ropes are passed around the fixed pulley and fixedly installed with crank arms installed on the front air door and the rear air door.

[0013] The beneficial effects of the present invention are:

[0014] 1. When the front air door is pushed, the crank arm installed on the front air door lifts the right counterweight block upward through the corresponding installed wire rope, so that the top of the right counterweight block lifts one end of the lock tongue upward, and the other end of the lock tongue pushes the left counterweight block downward. At the same time, the bucket seat is moved to the left as a whole through the translation mechanism, so that the left counterweight block can keep the crank arm on the rear air door in a taut state through the wire rope. Since the tops of the right and left counterweight blocks in the horizontal position are both against the lock tongue, when the front air door is just pushed, the right counterweight block can lock the rear air door when it is just lifted. Compared with the existing technology, it can avoid the problem that the rear air door can only be locked after the front air door is opened for a period of time, ensuring that the airflow inside the mine tunnel is not short-circuited;

[0015] 2. When the right counterweight is pulled up, the left counterweight will move downward under the push of the flipped lock tongue, so that the left counterweight drives the piston installed at its bottom to move downward, so that the piston squeezes the hydraulic oil at the bottom of the barrel seat to the other side of the partition, so that the hydraulic oil can assist in lifting the right counterweight downward, thereby achieving the effect of reducing the resistance to opening the front air door. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the installation position structure of an underground air door locking device proposed by the present invention;

[0017] Figure 2 A schematic diagram of the opening direction structure of the front and rear air doors of an underground air door locking device proposed by the present invention;

[0018] Figure 3 A schematic diagram of the internal structure of a bucket seat of a downhole air door locking device proposed by the present invention;

[0019] Figure 4 A schematic diagram of the back structure of a bucket seat of an underground air door locking device proposed by the present invention;

[0020] Figure 5 A schematic cross-sectional view of a barrel seat of a downhole damper locking device proposed by the present invention;

[0021] Figure 6 This is a schematic structural diagram of a first gear, a second gear and a spline shaft of a downhole damper locking device proposed by the present invention in a disassembled state;

[0022] Figure 7 The present invention is a schematic structural diagram of a right counterweight block of an underground air door locking device.

[0023] In the figure: 1. Mine tunnel; 2. Door frame; 3. Front air door; 4. Rear air door; 5. Mounting plate; 6. Bucket seat; 7. Partition plate; 8. Right counterweight; 9. Left counterweight; 10. Piston; 11. Support arm; 12. Guide wheel; 13. Wire rope; 14. Lock tongue; 15. Fixed block; 16. Spline shaft; 17. First gear; 18. Second gear; 19. Turntable; 20. Spline; 21. Electric telescopic rod; 22. Rack; 23. Tooth groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] Refer to the attached Figure 1 -Attached Figure 7 A underground air door locking device comprises a mine tunnel 1, wherein two door frames 2 are installed on the inner wall of the mine tunnel 1, and a front air door 3 and a rear air door 4 which are arranged to be opened are hinged in the two door frames 2 respectively, and a crank arm is fixedly installed on the outer surface of the front air door 3 and the rear air door 4 which are away from each other, and a mounting plate 5 is fixedly installed on the inner wall of one side of the mine tunnel 1 located in the middle of the two door frames 2, and a bucket seat 6 which can be moved left and right is slidably installed on the outer surface of the mounting plate 5, and a partition plate 7 is fixedly installed on the inner wall in the middle of the bucket seat 6, and a channel is left between the bottom end of the partition plate 7 and the bottom wall of the bucket seat 6, and the partition plate 7 divides the interior of the bucket seat 6 into a left chamber and a right chamber, A right counterweight 8 and a left counterweight 9 are slidably installed inside the right chamber and the left chamber respectively. A steel wire rope 13 is fixedly installed between the top of the right counterweight 8 and the left counterweight 9 and the crank arms on the front air door 3 and the rear air door 4 respectively. The steel wire rope 13 is arranged through the door frame 2. A locking tongue 14 is rotatably installed on the top of the partition 7. The weight of the right counterweight 8 and the left counterweight 9 are equal, and the tops of the right counterweight 8 and the left counterweight 9 are both against the locking tongue 14 when in the horizontal position. A fixed pulley is installed on the inner wall of the mine tunnel 1 near the door frame 2. Two steel wire ropes 13 pass around the fixed pulley and are fixedly installed with the crank arms installed on the front air door 3 and the rear air door 4.

[0027] In this embodiment, pistons 10 are fixedly mounted on the bottom ends of the right counterweight block 8 and the left counterweight block 9, and the bottom of the barrel seat 6 is filled with hydraulic oil.

[0028] When the right counterweight 8 is pulled up, the left counterweight 9 will move downward under the push of the flipped locking tongue 14, so that the left counterweight 9 drives the piston 10 installed at its bottom to move downward, so that the piston 10 squeezes the hydraulic oil at the bottom of the barrel seat 6 to the other side of the partition 7, so that the hydraulic oil can assist in lifting the right counterweight 8 downward, thereby achieving the effect of reducing the resistance to opening the front air door 3.

[0029] In this embodiment, two groups of support mechanisms are fixedly installed on the top of the barrel seat 6 for guiding two steel ropes 13 respectively. The support mechanism includes a support arm 11 fixedly installed on the top of the barrel seat 6, and a guide wheel 12 is rotatably installed on the top of the support arm 11, and the steel rope 13 passes around the guide wheel 12.

[0030] In this embodiment, a translation mechanism is installed between the right counterweight block 8 and the left counterweight block 9 and the barrel seat 6, and the translation mechanism includes a fixed block 15 fixedly installed on the back side of the barrel seat 6, and a spline shaft 16 is rotatably installed on the outer surface of the fixed block 15. A first gear 17 is fixedly installed on the outer surface of the spline shaft 16, and a second gear 18 is also rotatably installed on the outer surface of the spline shaft 16. The outer surface of the right counterweight block 8 and the left counterweight block 9 close to the fixed block 15 are vertically provided with a plurality of tooth grooves 23, and the second gear 18 is meshed with the tooth grooves 23. The outer surface of the barrel seat 6 is provided with a pair of spline shafts 16 and the second gears. A bonding mechanism is provided for bonding the wheel 18, a rack 22 is fixedly mounted on the inner wall of the mine tunnel 1 on the side close to the mounting plate 5, the first gear 17 is meshed with the second rack 22, the bonding mechanism comprises an electric telescopic rod 21 fixedly mounted on the outer surface of the barrel seat 6, a turntable 19 is rotatably mounted on the telescopic end of the electric telescopic rod 21, a plurality of splines 20 matching the spline shaft 16 are evenly fixedly mounted in the circumferential direction of the outer surface of the turntable 19 on the side away from the electric telescopic rod 21, the spline 20 is inserted in the keyway on the spline shaft 16, and a slot matching the spline 20 is opened on the inner side of the second gear 18.

[0031] When the front air door 3 is pushed, the camera installed on the outside of the front air door 3 will detect the operator or the mine car, thereby connecting the power of the electric telescopic rod 21 near the right counterweight 8, so that the telescopic end of the electric telescopic rod 21 drives the spline 20 to be inserted into the slot in the second gear 18 through the turntable 19, so that the spline 20 keys the second gear 18 with the spline shaft 16, so that when the right counterweight 8 is pulled upward, the tooth groove 23 opened on its side will drive the second gear 18 meshing with it to rotate, so that the second gear 18 rotates with the first gear 17 through the spline shaft 16. Since the first gear 17 is meshed with the rack 22, the first gear 17 can drive the bucket seat 6 to move to the left as a whole, so as to shorten the distance between the wire rope 13 connected to the rear air door 4 and the left counterweight 9, thereby ensuring that the left counterweight 9 can move downward when the right counterweight 8 rises, avoiding the left counterweight 9 and the right counterweight 8 from being stuck together.

[0032] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: when the front air door 3 is pushed, the crank arm installed on the front air door 3 lifts the right counterweight 8 upwards through the corresponding installed wire rope 13, so that the top end of the right counterweight 8 lifts one end of the lock tongue 14 upwards, and the other end of the lock tongue 14 pushes the left counterweight 9 downwards. At the same time, the bucket seat 6 is moved to the left as a whole through the translation mechanism, so that the left counterweight 9 can keep the crank arm on the rear air door 4 in a taut state through the wire rope 13. Since the top ends of the right counterweight 8 and the left counterweight 9 in the horizontal position are both against the lock tongue 14, when the front air door 3 is just pushed, the right counterweight 8 can lock the rear air door 4 when it is just lifted. Compared with the prior art, it can avoid the problem that the rear air door 4 can be locked only after the front air door 3 is opened for a period of time, thereby ensuring that the airflow inside the mine tunnel 1 is not short-circuited;

[0033] When the front air door 3 is pushed, the camera installed on the outside of the front air door 3 will detect the operator or the mine car, thereby connecting the power of the electric telescopic rod 21 near the right counterweight 8, so that the telescopic end of the electric telescopic rod 21 drives the spline 20 to be inserted into the slot in the second gear 18 through the turntable 19, so that the spline 20 keys the second gear 18 with the spline shaft 16, so that when the right counterweight 8 is pulled upward, the tooth groove 23 opened on its side will drive the second gear 18 meshing with it to rotate, so that the second gear 18 rotates with the first gear 17 through the spline shaft 16. Since the first gear 17 is meshed with the rack 22, the first gear 17 can drive the bucket seat 6 to move to the left as a whole, so as to shorten the distance between the wire rope 13 connected to the rear air door 4 and the left counterweight 9, thereby ensuring that the left counterweight 9 can move downward when the right counterweight 8 rises, avoiding the left counterweight 9 and the right counterweight 8 from being stuck together.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An underground air door locking device, comprising a mine tunnel (1), wherein the inner wall of the mine tunnel (1) is provided with two door frames (2), wherein the two door frames (2) are respectively hinged with a front air door (3) and a rear air door (4) which are arranged to be opened in opposite directions, wherein the outer surfaces of the front air door (3) and the rear air door (4) which are away from each other are both fixedly provided with crank arms, characterized in that: A mounting plate (5) is fixedly installed on the inner wall of one side of the mine tunnel (1) located in the middle of the two door frames (2); a bucket seat (6) that can move left and right is slidably installed on the outer surface of the mounting plate (5); a partition (7) is fixedly installed on the inner wall in the middle of the bucket seat (6); a passage is left between the bottom end of the partition (7) and the bottom wall of the bucket seat (6); the partition (7) divides the interior of the bucket seat (6) into a left chamber and a right chamber; a right counterweight (8) and a left counterweight (9) are slidably installed in the interior of the right chamber and the left chamber, respectively; steel wire ropes (13) are fixedly installed between the top ends of the right counterweight (8) and the left counterweight (9) and the crank arms on the front air door (3) and the rear air door (4), respectively; the steel wire ropes (13) are arranged to pass through the door frame (2); and a lock tongue (14) is rotatably installed on the top end of the partition (7).

2. A downhole damper locking device according to claim 1, characterized in that: A piston (10) is fixedly mounted at the bottom end of the right counterweight block (8) and the left counterweight block (9), and the bottom of the barrel seat (6) is filled with hydraulic oil.

3. The underground damper locking device according to claim 1, characterized in that: Two groups of support mechanisms for guiding two steel wire ropes (13) are fixedly installed at the top of the barrel seat (6), and the support mechanism includes a support arm (11) fixedly installed at the top of the barrel seat (6), and a guide wheel (12) is rotatably installed at the top of the support arm (11), and the steel wire rope (13) passes around the guide wheel (12).

4. A downhole damper locking device according to claim 1, characterized in that: A translation mechanism is installed between the right counterweight block (8) and the left counterweight block (9) and the barrel seat (6), and the translation mechanism includes a fixed block (15) fixedly installed on the back side of the barrel seat (6), a spline shaft (16) is rotatably installed on the outer surface of the fixed block (15), a first gear (17) is fixedly installed on the outer surface of the spline shaft (16), and a second gear (18) is also rotatably installed on the outer surface of the spline shaft (16), and a plurality of tooth grooves (23) are vertically opened on the outer surface of the right counterweight block (8) and the left counterweight block (9) on the side close to the fixed block (15), and the second gear (18) is meshed with the tooth grooves (23), and a keying mechanism for keying the spline shaft (16) and the second gear (18) is installed on the outer surface of the barrel seat (6).

5. A downhole damper locking device according to claim 4, characterized in that: A rack (22) is fixedly mounted on the inner wall of the mine tunnel (1) on one side close to the mounting plate (5), and the first gear (17) is meshed with the second rack (22).

6. A downhole damper locking device according to claim 4, characterized in that: The keying mechanism comprises an electric telescopic rod (21) fixedly mounted on the outer surface of the barrel seat (6); a turntable (19) is rotatably mounted on the telescopic end of the electric telescopic rod (21); a plurality of splines (20) matching the spline shaft (16) are evenly fixedly mounted in the circumferential direction on the outer surface of the turntable (19) away from the electric telescopic rod (21); the splines (20) are inserted into keyways on the spline shaft (16); and a slot matching the splines (20) is provided on the inner side of the second gear (18).

7. The underground damper locking device according to claim 1, characterized in that: The weights of the right counterweight (8) and the left counterweight (9) are equal, and the top ends of the right counterweight (8) and the left counterweight (9) when in a horizontal position are both against the locking tongue (14).

8. The underground damper locking device according to claim 1, characterized in that: A fixed pulley is installed on the inner wall of the mine tunnel (1) close to the door frame (2), and the two steel wire ropes (13) pass around the fixed pulley and are fixedly installed on the crank arms installed on the front air door (3) and the rear air door (4).

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