Mine air door control device

Abstract

The invention relates to the technical field of mine air doors, in particular to a mine air door control device which comprises a door frame, door bodies are rotationally installed on the door frame, the door bodies are symmetrically arranged in the width direction of the door frame, and door shafts of the two door bodies are connected with a control assembly arranged on the door frame. The control assembly is in communication connection with a control center arranged on the door frame, and the control assembly is controlled by the control center and can drive the door body to be closed or opened. The door body is provided with a telescopic assembly, the telescopic assembly comprises a driving structure and a telescopic plate, the telescopic plate is connected with the door body, the driving structure is connected with the door shaft through a linkage assembly, and in the opening or closing process of the door body, the door shaft can be matched with the linkage assembly to drive the driving structure to act. And then the telescopic plate is driven to retract into the door body and then recover to the initial state.

Description

Technical Field

[0001] The invention relates to the technical field of mine air doors, in particular to a mine air door control device. Background Art

[0002] Mine ventilation is the most important lifeline to ensure safe production in coal mines and the personal safety of underground workers. Mine dampers are the most important ventilation structures for controlling the underground airflow path, and are of great significance for ensuring the stability of the underground ventilation system in coal mines and protecting the lives of underground personnel. Mine dampers are generally set in pairs underground, which play the role of blocking the airflow and temporarily allowing pedestrians and vehicles to pass through; when pedestrians and vehicles pass through, only one side of the paired dampers is allowed to open (the other side remains closed), ensuring that pedestrians and vehicles are blocked from the airflow at the same time, ensuring that the airflow will not short-circuit, thereby ensuring the stability of the mine ventilation system.

[0003] At present, most of the dampers in coal mines are mechanical, and workers need to open the dampers manually. When workers have tools, it is very inconvenient to open the dampers. In actual mine tunnels, there will be slag on the ground around the dampers due to construction and transportation. At this time, when the dampers are opened and closed, the bottom of the dampers will be blocked by the slag, so it is more difficult to open. In the process of opening and closing the dampers, the bottom of the dampers will rub against the slag, causing the dampers to deform or loosen, which will shorten the service life of the dampers. Summary of the invention

[0004] The object of the present invention is to provide a mine air door control device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A mine air door control device, comprising: a door frame, a door body is rotatably mounted on the door frame, two groups of the door bodies are symmetrically arranged along the width direction of the door frame, the door shafts of the two groups of the door bodies are connected to a control component arranged on the door frame, the control component is communicatively connected with a control center arranged on the door frame, the control component is controlled by the control center, and can drive the door body to close or open;

[0007] The door body is provided with a telescopic component, which includes a driving structure and a telescopic plate. The telescopic plate is connected to the door body, and the driving structure is connected to the door shaft through a linkage component. During the opening or closing process of the door body, the door shaft can cooperate with the linkage component to drive the driving structure to move, and then drive the telescopic plate to retract into the door body first, and then restore to the initial state.

[0008] The mine air door control device as described above: the control component includes an external auxiliary box fixedly arranged on the door frame, a trigger structure and a movable structure are arranged in the external auxiliary box, the trigger structure includes an inverter and an iron core fixedly arranged in the external auxiliary box, the inverter is provided with a first terminal and a second terminal, a wire is wound around the iron core, one end of the wire is connected to the first terminal, and the other end is connected to the second terminal.

[0009] The mine air door control device as described above: the movable structure includes an armature arranged in the external box, the armature is fixedly connected to a sleeve sleeve mounted on the door shaft through a connecting rod, a protrusion is formed on the inner wall of the sleeve sleeve, and the protrusion is slidably arranged in a composite groove body opened on the door shaft.

[0010] The mine air door control device as described above: the composite slot body includes a threaded slot opened on the outer wall of the door shaft, and both ends of the threaded slot are provided with vertical slots.

[0011] The mine air door control device as described above: a plug-in cylinder is fixedly provided on the armature, a plug-in rod is slidably provided in the plug-in cylinder, a spring is slidably provided on the plug-in rod, one end of the spring abuts against the plug-in cylinder, and the other end abuts against a baffle formed on the plug-in rod, and a pulley is rotatably installed on the end of the plug-in rod away from the plug-in cylinder, and the pulley cooperates with an abutment fixedly provided in the external accessory box to lock the position of the armature.

[0012] The mine air door control device as described above: the abutment member comprises an abutment block fixedly arranged in the external accessory box, and the abutment block is provided with a first slot, a first inclined surface, a second inclined surface and a second slot.

[0013] The mine air door control device as described above: the driving structure includes a rotating rod rotatably installed on the door body, a driving gear is coaxially fixed on the rotating rod, the driving gear is meshed with a tooth plate slidably arranged on the door shaft, a movable plate is fixedly arranged on the tooth plate, a protrusion is formed on the side of the movable plate facing the door body, and the protrusion is slidably arranged in a composite groove opened on the telescopic plate.

[0014] The mine air door control device as described above: the composite slot includes a horizontal slot, a first inclined slot and a second inclined slot opened on the telescopic plate, and the first inclined slot and the second inclined slot are respectively connected to two ends of the horizontal slot.

[0015] The mine air door control device as described above: the linkage assembly includes a driving rod rotatably mounted on the door frame, the driving rod is connected to the door shaft through a gear set, and a first connecting plate is rotatably mounted on the driving rod, a linkage rod is rotatably mounted on the end of the first connecting plate away from the driving rod, a second connecting plate is rotatably mounted on the linkage rod, an end of the second connecting plate away from the linkage rod is connected to the rotating rod, and the linkage rod is connected to the driving rod and the rotating rod through a first belt and a second belt, respectively.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By setting up a control component, the automatic opening or closing of the door body can be realized under the remote control of the control center, and in the process of opening and closing the door body, the trigger structure and the mobile structure cooperate with each other to lock the position of the fully opened or fully closed door body, so as to prevent the door body from opening or closing autonomously due to the vibration of the mine. At the same time, in the mobile structure, with the cooperation of the abutment, when the personnel suddenly change their mind about passing through the door frame, the door body can be automatically restored to the original closed or open state, thereby avoiding invalid opening or closing of the door body;

[0018] At the same time, by setting a telescopic component, the telescopic plate is driven to retract relative to the door body during the opening and closing process of the door body. At this time, the bottom of the door body will not contact or rub against the slag during the opening process, so the opening process will be relatively labor-saving. At the same time, the service life of the door body can also be relatively extended. Until the door body is completely closed or opened, the telescopic plate returns to its initial position, which can completely block the door frame or provide certain support for the door frame after the door body is opened, thereby reducing the possibility of deformation of the door frame when it is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a mine air door control device.

[0020] Figure 2 This is a schematic diagram of the structure on the other side of the mine air door control device.

[0021] Figure 3 It is a schematic diagram of the structure of the composite trough body in the mine air door control device.

[0022] Figure 4 It is a structural schematic diagram of the driving structure in the mine air door control device.

[0023] Figure 5 This is a schematic diagram of the structure of the connection between the control component and the door body in the mine air door control device.

[0024] Figure 6 It is a structural schematic diagram of the linkage components in the mine air door control device.

[0025] Figure 7 This is a schematic diagram of the structure inside the external auxiliary box of the mine air door control device.

[0026] Figure 8 It is a structural schematic diagram of the moving structure in the mine air door control device.

[0027] Fig. 9 It is a structural schematic diagram of the cooperation between the moving structure and the abutment member in the mine air door control device.

[0028] In the figure: 1, door frame; 101, control center; 2, door body; 201, slide slot; 202, installation slot; 3, telescopic plate; 301, first inclined slot; 302, horizontal slot; 303, second inclined slot; 304, slider; 4, door shaft; 401, vertical slot; 402, threaded slot; 5, external box; 501, through slot; 6, rotating rod; 7, linkage rod; 8, moving plate; 801, protruding column; 9, tooth plate; 10, driving gear; 11, gear set; 12, driving rod; 13, first connecting plate; 1 4. First belt; 15. Second connecting plate; 16. Second belt; 17. Inverter; 1701. First terminal; 1702. Second terminal; 18. Wire; 19. Iron core; 20. Abutment block; 2001. First slot; 2002. First inclined plane; 2003. Second inclined plane; 2004. Second slot; 21. Armature; 22. Socket; 2201. Protrusion; 23. Plug-in cylinder; 24. Spring; 25. Plug-in rod; 2501. Block; 26. Pulley; 27. Connecting rod. DETAILED DESCRIPTION

[0029] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0030] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0031] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0032] See also Figure 1-Figure 9 In an embodiment of the present invention, a mine air door control device includes:

[0033] A door frame 1, on which a door body 2 is rotatably mounted, wherein two groups of the door bodies 2 are symmetrically arranged along the width direction of the door frame 1, and the door shafts 4 of the two groups of the door bodies 2 are connected to a control component arranged on the door frame 1, and the control component is communicatively connected to a control center 101 arranged on the door frame 1, and the control component is controlled by the control center 101 to drive the door body 2 to close or open;

[0034] Preferably, see Figure 1 , Figure 2 The above-mentioned control center 101 is provided with two groups, and the two groups of control centers 101 are respectively arranged on the front and rear sides of the door frame 1, so that personnel can control the door body 2 when entering and exiting. In particular, the above-mentioned control center 101 is communicated with the remote control terminal, so as to realize the function of remotely controlling the door body 2, and an infrared sensor is also provided on the control center 101. The infrared sensor can automatically monitor the heat source signal (coal miner) around the door body 2. When the heat source signal enters the detection range of the infrared sensor, the infrared sensor can transmit a signal to the control component, and then drive the control component to operate and open the door body 2; then when the heat source signal is away from the door body 2 and exceeds the detection range, the infrared sensor can transmit a closing signal to the control component to drive the control component to operate and close the door body 2.

[0035] The control assembly includes an external box 5 fixedly arranged on the door frame 1, a trigger structure and a moving structure are arranged in the external box 5, the trigger structure includes an inverter 17 and an iron core 19 fixedly arranged in the external box 5, the inverter 17 is provided with a first terminal 1701 and a second terminal 1702, a wire 18 is wound around the iron core 19, one end of the wire 18 is connected to the first terminal 1701, and the other end is connected to the second terminal 1702;

[0036] The moving structure includes an armature 21 disposed in the external box 5, the armature 21 is fixedly connected to a sleeve 22 sleeved on the door shaft 4 through a connecting rod 27, a protrusion 2201 is formed on the inner wall of the sleeve 22, and the protrusion 2201 is slidably disposed in a composite groove body opened on the door shaft 4;

[0037] For details, please refer to Figure 7 The end of the armature 21 facing the iron core 19 is the "N" pole, and the other end is the "S" pole, and the connecting rod 27 is slidably set in the through groove 501 opened on the outer box 5. With the cooperation of the through groove 501 and the connecting rod 27, the armature 21 and the sleeve 22 can only be lifted and lowered along the axial direction of the door shaft 4. During the lifting process, the protrusion 2201 cooperates with the composite groove body to drive the door shaft 4 to rotate, thereby opening or closing the door body 2.

[0038] For details, please refer to Figure 7 , Figure 8 , Fig. 9 The composite groove body includes a thread groove 402 opened on the outer wall of the door shaft 4. Specifically, the thread groove 402 is opened at 90 degrees around the outer wall of the door shaft 4, and both ends of the thread groove 402 are provided with vertical grooves 401;

[0039] Specifically, the door frame 1 and the door body 2 are placed in a shaft of a coal mine. The door frame 1 may vibrate slightly due to operations such as mining or transportation inside the mine. In the present invention, when the protrusion 2201 is combined with the vertical groove 401, the door shaft 4 cannot rotate due to the cooperation between the vertical groove 401 and the protrusion 2201, thereby fixing the state of the door body 2 and preventing the door body 2 from opening or closing autonomously due to the vibration of the mine.

[0040] The armature 21 is also fixedly provided with an inserting cylinder 23, a plugging rod 25 is slidably provided in the inserting cylinder 23, a spring 24 is slidably provided on the inserting rod 25, one end of the spring 24 abuts against the inserting cylinder 23, and the other end abuts against a blocking piece 2501 formed on the inserting rod 25, and a pulley 26 is rotatably installed on the end of the inserting rod 25 away from the inserting cylinder 23, and the pulley 26 cooperates with an abutment piece fixedly provided in the external accessory box 5, so as to lock the position of the armature 21;

[0041] See also Figure 8 , Fig. 9 The abutment member includes an abutment block 20 fixedly disposed in the external accessory box 5, and the abutment block 20 is provided with a first slot 2001, a first inclined surface 2002, a second inclined surface 2003 and a second slot 2004, and the first slot 2001 and the first inclined surface 2002 are symmetrically arranged with the second inclined surface 2003 and the second slot 2004;

[0042] In detail, the spring 24 is always in a compressed state. The spring 24 in the compressed state pushes the plug rod 25 away from the armature 21 and enables the pulley 26 to engage with the second slot 2004 to fix the position of the armature 21.

[0043] Specifically, the inverter 17 is connected to the internal power supply provided in the external accessory box 5 (not shown in the figure), and the wire 18 is wound around the iron core 19 in a clockwise direction. In the initial state, the door body 2 is in a closed state, the internal power supply is turned off, and the protrusion 2201 is located at the end of the stroke of the lower vertical slot 401. When the control center 101 transmits an open signal, the internal power supply is turned on. At this time, the inverter 17 allows the current to flow from the first terminal 1701 to the second terminal 1702, and then the iron core 19 is magnetized instantly. Combined with the "Ampere's Law", it can be judged that at this time, the end of the iron core 19 facing the armature 21 is the "S" pole, and then the magnetized iron core 19 can attract the armature 21, so that the armature 21 can drive the sleeve 22 to rise along the axial direction of the door shaft 4 toward the direction of the iron core 19. During the rising process, the pulley 26 is first separated from the second slot 2004, and then slides along the second inclined surface 2003. During the sliding process, the elastic potential energy of the spring 24 increases until the armature 21 drives the pulley 26 to cross the second inclined surface 2003 and engage with the first inclined surface 2002. The spring 24 releases the elastic potential energy and can push the armature 21 to automatically and quickly move toward the iron core 19 until the pulley 26 engages with the first slot 2001, and the position of the armature 21 is fixed;

[0044] In the process of the sleeve 22 rising, the protrusion 2201 can first move along the lower vertical groove 401, and after the protrusion 2201 is combined with the thread groove 402, the sleeve 22 that continues to rise can drive the door shaft 4 to rotate under the cooperation of the protrusion 2201 and the thread groove 402, until the protrusion 2201 is combined with the upper vertical groove 401, the door shaft 4 drives the door body 2 to rotate ninety degrees, the door body 2 is fully opened, and the pulley 26 is combined with the first slot 2001 to lock the open position of the door body 2 so that vehicles can pass through;

[0045] When a person or a vehicle passes by, the control center 101 transmits a closing signal, and the inverter 17 changes the direction of the current so that the current flows from the second terminal 1702 to the first terminal 1701. At this time, the magnetism of the lower end of the iron core 19 is the same as the magnetism of the upper end of the armature 21. Then the iron core 19 repels the armature 21, driving the armature 21 to descend. During the descent, the protrusion 2201 cooperates with the vertical groove 401 and the threaded groove 402 to drive the door shaft 4 to reverse, thereby closing the door body 2. During the rotation of the door shaft 4, the cooperation between the pulley 26 and the abutment can lock the position of the door shaft 4 again, so that the door body 2 remains in a closed state.

[0046] In particular, due to the setting of the first inclined plane 2002 and the second inclined plane 2003, when the signal transmitted by the control center 101 is suddenly changed from closed to open or from open to closed (that is, when the personnel suddenly change their mind about passing through the door frame 1), the pulley 26 can be guided by the first inclined plane 2002 or the second inclined plane 2003 and re-engage with the first slot 2001 and the second slot 2004, and then restore the door body 2 to its original closed or open state, thereby avoiding invalid opening or closing of the door body 2.

[0047] For further information, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The door body 2 is provided with a telescopic component, which includes a driving structure and a telescopic plate 3. The telescopic plate 3 is connected to the door body 2, and the driving structure is connected to the door shaft 4 through a linkage component. During the opening or closing process of the door body 2, the door shaft 4 can cooperate with the linkage component to drive the driving structure to move, and then drive the telescopic plate 3 to retract into the door body 2 first, and then restore to the initial state;

[0048] In actual mine tunnels, there will be slag on the ground around the door frame 1. When the existing door body 2 is opened, the bottom of the door body 2 contacts the slag, which will make the process of opening the door body 2 more laborious. In addition, when opened, the bottom of the door body 2 rubs against the slag, which will cause the door body 2 to be deformed, loosened, and other damages, thereby affecting the service life of the door body 2. In the present invention, during the opening process of the door body 2, the telescopic assembly arranged on the door body 2 can drive the telescopic plate 3 slidingly arranged on the door body 2 to retract toward the direction of the external box 5. At this time, during the opening process of the door body 2, the bottom of the door body 2 will not contact or rub against the slag, so the opening process will be relatively labor-saving, and the service life of the door body 2 can also be relatively extended.

[0049] Specifically, the driving structure includes a rotating rod 6 rotatably mounted on the door body 2, a driving gear 10 is coaxially fixedly arranged on the rotating rod 6, the driving gear 10 is meshed with a tooth plate 9 slidably arranged on the door shaft 4, a moving plate 8 is fixedly arranged on the tooth plate 9, a protruding column 801 is formed on the side of the moving plate 8 facing the door body 2, and the protruding column 801 is slidably arranged in a composite groove opened on the telescopic plate 3;

[0050] For details, please refer to Figure 2 , Figure 3 , Figure 4The door body 2 is provided with an installation groove 202, the tooth plate 9 is slidably arranged in the installation groove 202, and a slider 304 is arranged on the side of the telescopic plate 3 facing the door body 2, and the slider 304 is slidably arranged in the slide groove 201 provided on the door body 2. With the cooperation of the slider 304 and the slide groove 201, the telescopic plate 3 will not slide away from the door body 2.

[0051] The composite groove includes a horizontal groove 302, a first inclined groove 301 and a second inclined groove 303 which are provided on the telescopic plate 3, wherein the first inclined groove 301 and the second inclined groove 303 are respectively connected to two ends of the horizontal groove 302;

[0052] See also Figure 1 , Figure 5 , Figure 6 , the linkage assembly includes a driving rod 12 rotatably mounted on the door frame 1, the driving rod 12 is connected to the door shaft 4 through a gear set 11, the gear set 11 includes a first gear and a second gear, the first gear is coaxially fixed to the door shaft 4, the second gear is coaxially fixed to the driving rod 12, and a first connecting plate 13 is rotatably mounted on the driving rod 12, a linkage rod 7 is rotatably mounted on the end of the first connecting plate 13 away from the driving rod 12, a second connecting plate 15 is rotatably mounted on the linkage rod 7, and an end of the second connecting plate 15 away from the linkage rod 7 is connected to the rotating rod 6, it is particularly important to note that the radius of the linkage rod 7 is four times the radius of the rotating rod 6, so that the door shaft 4 can drive the rotating rod 6 to rotate one circle during the process of rotating ninety degrees, so that the subsequent rotating rod 6 drives the telescopic assembly to move, and the linkage rod 7 is connected to the driving rod 12 and the rotating rod 6 through a first belt 14 and a second belt 16 respectively;

[0053] In combination with the above, please combine Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 In the initial state, the protruding column 801 is located at the end of the travel of the first inclined slot 301 away from the horizontal slot 302. At this time, the telescopic plate 3 protrudes from the door body 2. When the control component receives the opening signal transmitted by the control center 101, it drives the door shaft 4 to rotate counterclockwise (combined with Figure 1, taking the left door body 2 as an example for explanation), the door shaft 4, with the cooperation of the gear set 11, drives the driving rod 12 to rotate clockwise, and then the rotating driving rod 12, with the cooperation of the linkage assembly, drives the rotating rod 6 to rotate clockwise, and then the driving gear 10 can force the tooth plate 9 to move in the direction away from the door shaft 4. At the same time, the contact and extrusion of the protruding column 801 on the wall of the first inclined groove 301 can force the telescopic plate 3 to move toward the external auxiliary box 5. After the door shaft 4 rotates a certain angle, the protruding column 801 separates from the first inclined groove 301 and combines with the horizontal groove 302. At this time, the telescopic plate 3 is completely retracted into the door body 2. With the continued rotation of the door shaft 4, the protruding column 801 01 slides in the horizontal groove 302, while the positions of the telescopic plate 3 and the door body 2 are relatively fixed, and the door body 2 can be easily opened. When the door body 2 is about to be opened to ninety degrees, the protruding column 801 is combined with the second inclined groove 303, and then with the continued rotation of the door shaft 4, the contact and extrusion of the protruding column 801 on the groove wall of the second inclined groove 303 can force the telescopic plate 3 to extend outward until the door body 2 rotates to ninety degrees and hovers, and the protruding column 801 moves to the end of the travel of the second inclined groove 303. At this time, the telescopic plate 3 returns to the initial position and fits with the ground again, so as to provide certain support for the door frame 1 after the door body 2 is opened, and reduce the possibility of deformation of the door frame 1 when it is opened;

[0054] When the door body 2 is subsequently closed, the reversed door shaft 4, with the cooperation of the linkage assembly, drives the rotating rod 6 to reverse, and then the movable plate 8 moving toward the door shaft 4, with the cooperation of the protruding column 801 and the composite groove, first drives the telescopic plate 3 to retract, until the door body 2 is completely closed, the telescopic plate 3 returns to its initial position, and can completely block the door frame 1.

[0055] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0056] 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. A mine air door control device, characterized in that: include: A door frame (1), a door body (2) being rotatably mounted on the door frame (1), the door body (2) being symmetrically arranged in two groups along the width direction of the door frame (1), the door shafts (4) of the two groups of the door bodies (2) being connected to a control component arranged on the door frame (1), the control component being communicatively connected to a control center (101) arranged on the door frame (1), the control component being controlled by the control center (101) and being able to drive the door body (2) to be closed or opened; The door body (2) is provided with a telescopic component, which includes a driving structure and a telescopic plate (3). The telescopic plate (3) is connected to the door body (2), and the driving structure is connected to the door shaft (4) via a linkage component. During the opening or closing process of the door body (2), the door shaft (4) can cooperate with the linkage component to drive the driving structure to move, and then drive the telescopic plate (3) to retract into the door body (2) first, and then restore to the initial state.

2. A mine air door control device according to claim 1, characterized in that: The control component comprises an external box (5) fixedly arranged on the door frame (1), a trigger structure and a moving structure are arranged in the external box (5), the trigger structure comprises an inverter (17) and an iron core (19) fixedly arranged in the external box (5), a first terminal (1701) and a second terminal (1702) are arranged on the inverter (17), a wire (18) is wound around the iron core (19), one end of the wire (18) is connected to the first terminal (1701), and the other end is connected to the second terminal (1702).

3. A mine air door control device according to claim 2, characterized in that: The movable structure includes an armature (21) arranged in the external box (5), and the armature (21) is fixedly connected to a sleeve (22) sleeved on the door shaft (4) through a connecting rod (27). The inner wall of the sleeve (22) is formed with a protrusion (2201), and the protrusion (2201) is slidably arranged in a composite groove body opened on the door shaft (4).

4. A mine air door control device according to claim 3, characterized in that: The composite groove body comprises a thread groove (402) formed on the outer wall of the door shaft (4), and both ends of the thread groove (402) are provided with vertical grooves (401).

5. A mine air door control device according to claim 3, characterized in that: The armature (21) is also fixedly provided with an insert cylinder (23), a plug rod (25) is slidably provided in the insert cylinder (23), a spring (24) is slidably provided on the insert rod (25), one end of the spring (24) abuts against the insert cylinder (23), and the other end abuts against a blocking piece (2501) formed on the insert rod (25), and a pulley (26) is rotatably installed at one end of the insert rod (25) away from the insert cylinder (23), and the pulley (26) cooperates with an abutment piece fixedly provided in the external box (5) to lock the position of the armature (21).

6. A mine air door control device according to claim 5, characterized in that: The abutment member comprises an abutment block (20) fixedly arranged in the external accessory box (5), and the abutment block (20) is provided with a first slot (2001), a first inclined surface (2002), a second inclined surface (2003) and a second slot (2004).

7. A mine air door control device according to claim 2, characterized in that: The driving structure includes a rotating rod (6) rotatably mounted on the door body (2), a driving gear (10) being coaxially fixedly arranged on the rotating rod (6), the driving gear (10) being meshed with a tooth plate (9) slidably arranged on the door shaft (4), a movable plate (8) being fixedly arranged on the tooth plate (9), a protruding column (801) being formed on one side of the movable plate (8) facing the door body (2), and the protruding column (801) being slidably arranged in a composite groove formed on the telescopic plate (3).

8. A mine air door control device according to claim 7, characterized in that: The composite groove comprises a horizontal groove (302), a first inclined groove (301) and a second inclined groove (303) which are opened on the telescopic plate (3); the first inclined groove (301) and the second inclined groove (303) are respectively connected to two ends of the horizontal groove (302).

9. A mine air door control device according to claim 7, characterized in that: The linkage assembly comprises a driving rod (12) rotatably mounted on the door frame (1), the driving rod (12) being connected to the door shaft (4) via a gear set (11), and a first connecting plate (13) being rotatably mounted on the driving rod (12), a linkage rod (7) being rotatably mounted on one end of the first connecting plate (13) away from the driving rod (12), a second connecting plate (15) being rotatably mounted on the linkage rod (7), an end of the second connecting plate (15) away from the linkage rod (7) being connected to the rotating rod (6), and the linkage rod (7) being connected to the driving rod (12) and the rotating rod (6) via a first belt (14) and a second belt (16), respectively.

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