Self-balancing anti-deformation air door structure for coal mine tunnel

Abstract

The utility model provides a kind of for coal mine tunnel's self-balancing deformation-resistant air door structure, it is related to coal mine tunnel air door technical field, ventilation opening is provided with multiple groups, evenly arranged distribution is on door panel, ventilation opening includes frame body, locating plate and movable plate, door panel facade is provided with multiple through holes, frame body is respectively corresponding installed at through hole, hollow portion of frame body is fixedly connected locating plate, movable plate is vertically slidingly connected with locating plate in the hollow portion of frame body.The utility model is provided by the setting of ventilation opening, the resistance of wind that each position is subjected to is weakened by the distribution quantity, position and size of ventilation opening, and the wind flow that is dispersed makes that each position of door panel is subjected to wind resistance substantially uniform, avoid the wind flow concentration, strong impact ground always be directed to door panel certain place, to reduce the situation that air door is easily deformed under long time use, guarantee the isolation effect of air door, guarantee air door long-term stable use, prevent the situation that serious condition occurs after accident, guarantee mine safety production work.

Description

Technical Field

[0001] This utility model relates to the field of ventilation door technology for coal mine roadways, specifically a self-balancing, deformation-resistant ventilation door structure for coal mine roadways. Background Technology

[0002] With the continuous development and changes in production, underground ventilation in coal mines is one of the most important technical means to ensure mine production safety. As the working face is constantly advancing and changing, the roadway air resistance, network structure, and required air volume are constantly changing. Therefore, it is necessary to adjust the air volume of the underground roadway network in a timely manner. Roadway air doors play an important role in mining production. They not only ensure the ventilation needs of the mine, but also play an isolation role in the event of a sudden gas explosion at the underground working face, preventing gas from flowing back into the intake roadway and controlling the emergency within the isolated area.

[0003] Existing coal mine roadway ventilation door structures primarily achieve ventilation by directly opening the door panel or creating an opening in the door panel. However, because the airflow is concentrated at the ventilation opening, and because there is only one opening with a large air volume, the door panel near the opening experiences very strong impact forces, unlike other parts of the door panel. As a result, the door panel is prone to deformation over long-term use, reducing its isolation effect and posing safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a self-balancing, anti-deformation air door structure for coal mine roadways, in order to solve the problems mentioned in the background art. The existing coal mine roadway air door structures, when meeting ventilation requirements, mainly achieve ventilation by directly opening the door panel or by opening a hole in the door panel. However, since the airflow is concentrated at the ventilation opening, and since there is only one opening, the airflow is large. Therefore, the door panel near the opening is subjected to very strong impact force, which is different from other parts of the door panel. As a result, the door panel is prone to deformation under long-term use, reducing the isolation effect and posing safety hazards.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-balancing, anti-deformation damper structure for coal mine roadways, comprising a door frame, a damper assembly, and a motor. The motor drives the damper assembly to rotate and open relative to the door frame. The damper assembly includes a door panel and ventilation openings. Multiple sets of ventilation openings are evenly distributed on the door panel. Each ventilation opening includes a frame, a positioning plate, and a movable plate. Multiple through holes are opened on the vertical surface of the door panel. The frame is installed at each of the through holes. The positioning plate is fixedly connected to the hollow part of the frame. The movable plate is vertically slidably connected to the positioning plate in the hollow part of the frame.

[0006] Preferably, a vertical groove is provided on one side of the inner ring facade of the frame, and the damper assembly also includes an adjusting member. The movable plate slides vertically relative to the positioning plate through the adjusting member. When the movable plate is in the sliding state, the two side edges of the movable plate are inserted into the groove.

[0007] Preferably, the adjusting component includes a fixed base, a linear actuator, a main movable base, a connecting rod, and a movable plate connecting base. The fixed base is fixed to the lower part of the leeward side of the door panel. The body of the linear actuator is fixedly connected to the fixed base. The output end of the linear actuator is fixedly connected to the main movable base. The vents are arranged in multiple rows on the door panel. Each movable plate of each row of vents is fixedly connected to the main movable base through the connecting rod. Each movable plate is fixedly connected to the connecting rod through the movable plate connecting base above it.

[0008] Preferably, a windbreak assembly is provided on the windward side of the door panel. The windbreak assembly includes a bracket, a cross shaft, and a rotating component. The two ends of the cross shaft are respectively fixedly connected to the bracket, the bracket is fixedly connected to the door panel, and the rotating component is sleeved and rotatably connected to the periphery of the cross shaft.

[0009] Preferably, multiple sets of the wind deflector components are evenly arranged on the door panel, and the fixed position of the wind deflector components is offset from the maximum adjustable opening position of the movable plate of the ventilation opening.

[0010] Preferably, multiple sets of rotating components are arranged on the cross shaft. Each rotating component includes a bearing, a ring, and a fan blade. The inner ring of the bearing is fixedly connected to the circumference of the cross shaft, the outer ring of the bearing is fixedly connected to the ring, and the outer circumference of the ring is fixedly connected to the fan blade.

[0011] Preferably, on the windward side of the door panel, multiple sets of convex blocks are arranged in the non-ventilation area, and the surface of the convex blocks has inclined surfaces in multiple directions relative to the plane of the door panel.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the setting of ventilation openings, the distribution, number, position and size of the ventilation openings weaken the wind resistance at each position, and the dispersed airflow makes the wind resistance at each position of the door panel basically uniform, avoiding the concentrated and strong impact of the airflow always targeting a certain part of the door panel, thereby reducing the possibility of deformation of the air door after long-term use, ensuring the isolation effect of the air door, ensuring the long-term stable use of the air door, preventing the situation from worsening after an accident, and ensuring the safe production of the mine. 2. This utility model, through the setting of the wind-blocking component, directs the wind flow towards the door panel in the alleyway. In the area where the wind-blocking component is located, the wind that is about to approach and impact the door panel will first pass through the wind-blocking component. The airflow applies pressure to the rotating component, which rotates as the windflow increases. The rotation speed of the rotating component varies with the size of the airflow. The wind hits the rotating component, and the rotating component also has a certain resistance during its rotation to offset the wind force, thereby consuming some of the wind force. At the same time, because the rotating component blocks part of the wind, the impact force of the remaining airflow on the door panel is weakened. Moreover, the airflow direction changes after passing through the rotating component, which also reduces the impact force on the door panel compared to the windflow directly hitting the door panel. Therefore, in all aspects, the wind-blocking component can effectively prevent the door panel from deforming. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the self-balancing, deformation-resistant air door structure for coal mine roadways according to this utility model.

[0014] Figure 2 This is a schematic diagram of the single-sided opening structure of the self-balancing, deformation-resistant air door for coal mine roadways according to this utility model.

[0015] Figure 3 This is a schematic diagram of the damper assembly structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the ventilation opening structure of this utility model.

[0017] Figure 5 This is a schematic diagram of the adjusting component structure of this utility model.

[0018] Figure 6 This is a schematic diagram of the windbreak component structure of this utility model.

[0019] Figure 7 This is a schematic diagram showing the position of the convex block of this utility model.

[0020] In the diagram: 1. Door frame; 2. Damper assembly; 21. Door panel; 211. Door panel shaft; 212. Convex block; 22. Ventilation opening; 221. Frame; 2211. Slide groove; 222. Positioning plate; 223. Movable plate; 23. Adjusting component; 231. Fixed seat; 232. Linear actuator; 233. Main movable seat; 234. Connecting rod; 235. Movable plate connecting seat; 3. Motor; 4. Windshield assembly; 41. Bracket; 42. Cross shaft; 43. Rotating component; 431. Bearing; 432. Ring component; 433. Fan blade. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] One embodiment of this utility model provides: a self-balancing, deformation-resistant damper structure for coal mine roadways, such as... Figure 1 and Figure 2 As shown, it includes a door frame 1, a damper assembly 2, a motor 3, and a windbreak assembly 4.

[0023] In coal mine roadways, at the location where airlocks are installed, two airlock assemblies 2 are symmetrically arranged in a door frame 1. A motor 3 drives the airlock assembly 2 to rotate and open relative to the door frame 1. Door panel 21 of the airlock assembly 2 has door panel shafts 211 located at both the top and bottom near the side edge. The door panel 21 is hinged to the door frame 1 via the upper door panel shaft 211. The motor 3 is embedded below ground level, and its output end is fixedly connected to the lower door panel shaft 211 of the door panel 21. When vehicles and personnel need to pass through the airlock in the roadway, the motor 3 drives the door panel 21 to open, allowing vehicles and personnel to pass.

[0024] like Figure 3 , Figure 4 and Figure 5 As shown, the damper assembly 2 includes a door panel 21, an air vent 22, and an adjusting component 23.

[0025] Multiple sets of ventilation openings 22 are evenly distributed on the door panel 21. Each ventilation opening 22 includes a frame 221, a positioning plate 222, and a movable plate 223. Multiple through holes are opened on the vertical surface of the door panel 21. The frame 221 is installed at the corresponding through holes. The hollow part of the frame 221 is fixedly connected to the positioning plate 222. The movable plate 223 is located above the positioning plate 222. The movable plate 223 is vertically slidably connected to the positioning plate 222 in the hollow part of the frame 221 through an adjusting member 23.

[0026] Based on the actual working conditions in coal mine roadways, when the airflow through the roadway is limited, the movable plates 223 of each ventilation opening 22 can be moved up and down to change the size of the openings in each ventilation opening 22, thus corresponding to different airflow requirements. When the airflow requirement is high, the movable plates 223 are adjusted downwards, making the openings in the ventilation openings 22 larger; when the airflow requirement is low, the movable plates 223 are adjusted downwards, making the openings in the ventilation openings 22 smaller. Moreover, during this adjustment process, the area of ​​the opening through which airflow passes is directly proportional to the distance the movable plates 223 move, making it convenient for workers to calculate the ventilation volume and adjust the height of the movable plates 223 accordingly.

[0027] Each ventilation opening 22 is evenly distributed on the door panel 21, and the size of the opening of each ventilation opening 22 remains consistent when the air volume is adjusted. Therefore, the position of the ventilation opening is evenly distributed on the door panel 21, and the size of the ventilation opening is the same. When the air in the roadway passes through the air door, it is evenly distributed to all positions of the air door. Compared with the traditional method with fewer openings, the wind resistance at each position is weakened. Moreover, the dispersed airflow makes the wind resistance at each position of the door panel 21 basically uniform, avoiding the airflow concentration and strong impact always targeting a certain point of the door panel 21. This reduces the possibility of deformation of the air door after long-term use, ensures the isolation effect of the air door, ensures the long-term stable use of the air door, prevents the situation from worsening after an accident, and ensures the safe production of the mine.

[0028] A vertical groove 2211 is provided on one side of the inner ring facade of the frame 221. When the movable plate 223 is in the sliding state, the two side edges of the movable plate 223 are inserted into the groove 2211. When the movable plate 223 is in the state of being furthest away from the frame 223, the facade of the positioning plate 222 and the movable plate 223 cover the entire hollow part of the frame 221. There is an overlap between the movable plate 223 and the frame 221, and there is an overlap between the movable plate 223 and the positioning plate 222. When the frame 221 and the positioning plate 222 block the edge of the movable plate 223, the amount of airflow in the tunnel passing through the edge gap of the movable plate 223 can be reduced when the ventilation opening 22 is completely closed, thereby improving the isolation effect of the air door.

[0029] The adjusting component 23 includes a fixed base 231, a linear actuator 232, a main movable base 233, a connecting rod 234, and a movable plate connecting base 235. The fixed base 231 is fixedly located below the leeward side of the door panel 21. The body of the linear actuator 232 is fixedly connected to the fixed base 231. The output end of the linear actuator 232 is fixedly connected to the main movable base 233. Multiple rows of vents 22 are arranged on the door panel 21. Each movable plate 223 of each row of vents 22 is fixedly connected to the main movable base 233 through the connecting rod 234. Each movable plate 223 is connected to the connecting rod 234 through the movable plate connecting base 235 above it.

[0030] When the adjusting component 23 adjusts the movable plate 223, the movable plate connecting seat 235 of each row is connected to the main movable seat 233. Each movable plate 223 in each row will move up and down synchronously with the drive of the linear actuator 232. Each door panel 21 only needs to be adjusted by one linear actuator 232 by the operator to realize the synchronous adjustment of the size of the openings left by all the ventilation openings 22, which improves work efficiency and can also adjust the air volume in a timely and effective manner when dealing with changes in airflow.

[0031] like Figure 6As shown, a windbreak assembly 4 is provided on the windward side of the door panel 21. The windbreak assembly 4 includes a bracket 41, a cross shaft 42, and a rotating component 43. The two ends of the cross shaft 42 are respectively fixedly connected to the bracket 41, and the bracket 41 is fixedly connected to the door panel 21. The rotating component 43 is sleeved and rotatably connected to the periphery of the cross shaft 42. Multiple sets of rotating components 43 are arranged on the cross shaft 42. The rotating component 43 includes a bearing 431, a ring 432, and a fan blade 433. The inner ring of the bearing 431 is fixedly connected to the periphery of the cross shaft 42, the outer ring of the bearing 431 is fixedly connected to the ring 432, and the outer periphery of the ring 432 is fixedly connected to the fan blade 433.

[0032] The wind flows in the direction of the door panel 21 in the alleyway. In the area where the wind baffle assembly 4 is located, the wind that is about to approach and impact the door panel 21 will first pass through the wind baffle assembly 4. The wind flow applies pressure to the rotating part 43. The rotating part 43 rotates as the wind flow increases. The rotation speed of the rotating part 43 varies with the wind flow. The wind hits the rotating part 43. The rotating part 43 also has a certain resistance to counteract the wind force during its rotation, thus consuming some of the wind force. At the same time, it is precisely because the rotating part 43 blocks part of the wind that the impact force of the remaining wind flow on the door panel 21 is weakened. Moreover, the direction of the wind flow changes after passing through the rotating part 43. Compared with the direct impact on the door panel 21, the impact force on the door panel 21 is also reduced. Therefore, the wind baffle assembly 4 can effectively resist the deformation of the door panel 21 in all aspects.

[0033] Multiple sets of wind deflector components 4 are evenly arranged on the door panel 21. The fixed position of the wind deflector components 4 is staggered from the maximum adjustable opening position of the movable plate 223 of the ventilation opening 22 to avoid affecting the normal ventilation of the ventilation opening 22.

[0034] like Figure 7 As shown, multiple sets of convex blocks 212 are arranged on the windward side of the door panel 21 in the non-ventilation opening 22 section. The surface of the convex blocks 212 has inclined surfaces in multiple directions relative to the plane of the door panel 21. When the wind in the tunnel hits the plane of the door panel 21 perpendicularly, the impact force is the greatest. The convex blocks 212 here can appropriately change the flow direction of the airflow in the tunnel after it comes into contact with the door panel 21, so that the airflow direction is not completely perpendicular to the door panel 21. This weakens the impact force of the airflow in the tunnel when it reaches the air door and reduces the risk of the air door being deformed after long-term use.

[0035] In this structure, the number, position and size of the ventilation openings 22, the wind baffle assembly 4, and the convex blocks 212 on the door panel 21 work together to balance and cope with the airflow in the tunnel, thereby effectively improving the deformation resistance of the air door, reducing the deformation damage to the air door caused by the airflow in the tunnel, and ensuring the long-term stable use of the air door.

[0036] The above are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics in the solutions has not been described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A self-balancing, deformation-resistant damper structure for coal mine roadways, comprising a door frame (1), a damper assembly (2), and a motor (3), wherein the motor (3) drives the damper assembly (2) to rotate and open relative to the door frame (1), characterized in that: The damper assembly (2) includes a door panel (21) and a ventilation opening (22). Multiple sets of ventilation openings (22) are evenly distributed on the door panel (21). Each ventilation opening (22) includes a frame (221), a positioning plate (222), and a movable plate (223). Multiple through holes are opened on the vertical surface of the door panel (21). The frame (221) is installed at the through holes respectively. The positioning plate (222) is fixedly connected to the hollow part of the frame (221). The movable plate (223) is vertically slidably connected to the positioning plate (222) in the hollow part of the frame (221).

2. The self-balancing, deformation-resistant damper structure for coal mine roadways according to claim 1, characterized in that: A vertical groove (2211) is provided on one side of the inner ring facade of the frame (221). The damper assembly (2) also includes an adjusting member (23). The movable plate (223) slides vertically relative to the positioning plate (222) through the adjusting member (23). When the movable plate (223) is in the sliding state, the two sides of the movable plate (223) are inserted into the groove (2211).

3. The self-balancing, deformation-resistant damper structure for coal mine roadways according to claim 2, characterized in that: The adjusting component (23) includes a fixed base (231), a linear actuator (232), a main movable base (233), a connecting rod (234), and a movable plate connecting base (235). The fixed base (231) is fixed below the leeward side of the door panel (21). The body of the linear actuator (232) is fixedly connected to the fixed base (231). The output end of the linear actuator (232) is fixedly connected to the main movable base (233). The ventilation openings (22) are arranged in multiple rows on the door panel (21). Each movable plate (223) of each row of ventilation openings (22) is fixedly connected to the main movable base (233) through the connecting rod (234). Each movable plate (223) is connected to the connecting rod (234) through the movable plate connecting base (235) above it.

4. The self-balancing, deformation-resistant damper structure for coal mine roadways according to claim 1, characterized in that: A windbreak assembly (4) is provided on the windward side of the door panel (21). The windbreak assembly (4) includes a bracket (41), a cross shaft (42), and a rotating component (43). The two ends of the cross shaft (42) are respectively fixedly connected to the bracket (41). The bracket (41) is fixedly connected to the door panel (21). The rotating component (43) is sleeved and rotatably connected to the periphery of the cross shaft (42).

5. A self-balancing, deformation-resistant damper structure for coal mine roadways according to claim 4, characterized in that: Multiple sets of the windbreak assembly (4) are evenly arranged on the door panel (21). The fixed position of the windbreak assembly (4) is offset from the maximum adjustable opening position of the movable plate (223) of the ventilation opening (22).

6. A self-balancing, deformation-resistant damper structure for coal mine roadways according to claim 4, characterized in that: Multiple sets of rotating components (43) are arranged on the cross shaft (42). The rotating components (43) include bearings (431), rings (432) and fan blades (433). The inner ring of the bearing (431) is fixedly connected to the circumference of the cross shaft (42), the outer ring of the bearing (431) is fixedly connected to the rings (432), and the outer circumference of the rings (432) is fixedly connected to the fan blades (433).

7. A self-balancing, deformation-resistant damper structure for coal mine roadways according to claim 1, characterized in that: On the windward side of the door panel (21), multiple sets of convex blocks (212) are arranged in the non-ventilation opening (22) section. The surface of the convex blocks (212) has inclined surfaces in multiple directions that are inclined to the plane of the door panel (21).

Images