A pneumatic locking device for mine air door

Abstract

The utility model discloses a mine air door pneumatic locking device relates to mine equipment technical field, the utility model discloses a mine cave, the inner wall of mine cave is hinged with a plurality of air door, the utility model discloses a rubber sleeve and spacer are set to when the fixed block moves, will drive first locating rod and make it pull connecting shaft, through the movement of connecting shaft makes it drive second locating rod rotates around first fixed block, through the rotation of second locating rod and promote spacer and make it move, through the movement of spacer and promote the outside of rubber sleeve, through the movement of fixed block and promote two spacer close to simultaneously, and drive rubber sleeve and make it wrap trachea after the deformation, prevent appearing due to in the use process trachea's middle part is in the air, when the gas flow will produce the thrust to make trachea's in the air part appear to sway, easily make trachea's connecting part appear loose even break, lead to device can not normally work and increase the safe risk problem.

Description

Technical Field

[0001] This utility model belongs to the field of mining equipment technology, and in particular relates to a pneumatic locking device for mine ventilation doors. Background Technology

[0002] According to the published patent CN213540014U, a pneumatic locking device for a damper is provided. Two self-locking first door panels and two self-locking second door panels are respectively installed inside the first door frame and the second door frame. Two pairs of limiting components are respectively installed on the top of both sides of the first door frame and the top of both sides of the second door frame. Each pair of limiting components includes two pairs of cylinders, which are respectively fixedly installed on the top of both sides of the first door frame and the top of both sides of the second door frame. Two pairs of L-shaped limiting rods are fixedly provided at the bottom of each pair of cylinders. The middle of the top of the inner wall of the first door frame and the middle of the top of the inner wall of the second door frame are respectively fixed... Two Z-shaped limiting seats are provided. Two first force-sensitive switches and two second force-sensitive switches are slidably embedded on both sides of the two Z-shaped limiting seats via four first springs. The two first force-sensitive switches and two second force-sensitive switches are respectively installed on the first door frame and the second door frame. The first and second force-sensitive switches can control two pairs of cylinders to perform limiting operations. That is, when the first door panel is opened, the first force-sensitive switch controls another pair of cylinders to drive the L-shaped limiting rod to limit the second door panel, preventing the second door panel from opening. Conversely, when the second door panel is opened, the first door panel cannot be opened, achieving the purpose of automatic locking. However, the following shortcomings still exist:

[0003] After completion, the above-mentioned device simply uses force-sensitive switches to control the cylinders on both sides to automatically restrict the door panel on one side. However, because the middle part of the air pipe is suspended during use, the air flow will generate thrust, causing the suspended part of the air pipe to shake. This can easily cause the connection of the air pipe to loosen or even break, resulting in the device failing to work properly and increasing safety risks. Utility Model Content

[0004] The purpose of this utility model is to provide a pneumatic locking device for mine ventilation doors. Through the limiting mechanism and the installation mechanism, it solves the problem that when the middle part of the air pipe is suspended during use, the thrust generated by the gas flow causes the suspended part of the air pipe to shake, which can easily loosen or even break the connection of the air pipe, resulting in the device failing to work properly and increasing safety risks.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a pneumatic locking device for mine ventilation doors, including a mine tunnel, wherein a number of ventilation doors are hinged to the inner wall of the mine tunnel, and a number of sensors are fixedly connected to the inner wall of the mine tunnel.

[0007] The inner wall of the mine shaft is equipped with a limiting mechanism, which includes a positioning block. The outer wall of the positioning block is fixedly connected to the inner wall of the mine shaft. A rubber sleeve is fixedly connected to the inner wall of the positioning block. A damping spring is fixedly connected to the inner wall of the positioning block. A fixing block is fixedly connected to the outer wall of the damping spring at the end away from the positioning block. A plurality of first positioning rods are rotatably connected to the inner wall of the fixing block. A connecting shaft is rotatably connected to the outer wall of the first positioning rod at the end away from the fixing block. A second positioning rod is rotatably connected to the outer wall of the connecting shaft. A limiting block is rotatably connected to the outer wall of the second positioning rod. A first fixing block is rotatably connected to the outer wall of the second positioning rod at the end away from the limiting block. A third positioning rod is rotatably connected to the inner wall of the limiting block. A second fixing block is rotatably connected to the outer wall of the third positioning rod. The inner wall of the mine shaft is equipped with an installation mechanism.

[0008] Furthermore, the outer wall of the limiting block is fixedly connected to the inner wall of the rubber sleeve, the outer wall of the first fixing block is fixedly connected to the inner wall of the positioning block, and the outer wall of the second fixing block is fixedly connected to the inner wall of the positioning block.

[0009] Furthermore, the installation mechanism includes an installation box, the outer wall of which is fixedly connected to the inner wall of the mine shaft, a filter screen is snapped into the inner wall of the installation box, an air compressor is inserted into the inner wall of the installation box, an air pipe is fixedly connected to the bottom outer wall of the air compressor, and the outer wall of the air pipe is inserted into the inner wall of the installation box.

[0010] Furthermore, a cylinder is fixedly connected to the outer wall of the end of the mounting box away from the air compressor, and the outer wall of the cylinder is fixedly connected to the inner wall of the mine.

[0011] Furthermore, a blocking block is fixedly connected to the outer wall of the cylinder, and several rubber blocks are slidably connected to the inner wall of the mounting box, with a first support block fixedly connected to the outer wall of the rubber blocks.

[0012] Furthermore, a plurality of first connecting rods are rotatably connected to the outer wall of the first support block, and a second connecting rod is rotatably connected to the outer wall of the end of the first connecting rod away from the first support block.

[0013] Furthermore, a second support block is rotatably connected to the outer wall of the second connecting rod, the outer wall of the second support block is fixedly connected to the inner wall of the mounting box, and a third support block is rotatably connected to the outer wall of the second connecting rod.

[0014] Furthermore, a damper is fixedly connected to the outer wall of the third support block, and a spring is fixedly connected to the outer wall of the damper.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model incorporates a rubber sleeve and a limiting block. When the fixed block moves, it drives the first positioning rod to pull the connecting shaft. The movement of the connecting shaft causes the second positioning rod to rotate around the first fixed block. The rotation of the second positioning rod pushes the limiting block to move. The movement of the limiting block pushes the outer side of the rubber sleeve. The movement of the fixed block pushes the two limiting blocks closer together, causing the rubber sleeve to deform and wrap around the air tube. This prevents the air tube from being suspended in the middle during use. When the gas flows, the thrust will cause the suspended part of the air tube to shake, which can easily loosen or even break the connection of the air tube, leading to the device malfunctioning and increasing safety risks.

[0017] 2. This utility model incorporates a rubber block and a second connecting rod. The movement of the rubber block moves the first support block, which in turn moves the first connecting rod, causing it to rotate around the first support block. Simultaneously, the first connecting rod rotates around the second support block. The connection between the first and second connecting rods effectively supports the movement of the first support block and stabilizes the movement of the rubber block. The movement of the rubber block, in turn, drives the rotation of the first and second connecting rods, thus stabilizing the movement of the rubber block and confining the air compressor within the mounting box. This prevents potential issues such as increased displacement of the air compressor and loosening of pipe joints due to impacts caused by frequent movement of mine cars or personnel within the mine.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0022] Figure 3 This is a cross-sectional view of the limiting structure of this utility model;

[0023] Figure 4 This is a sectional view of the installation structure of this utility model;

[0024] Figure 5 This utility model Figure 4Enlarged view of point A in the middle.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Mine shaft; 101. Air door; 102. Sensor; 2. Limiting mechanism; 201. Positioning block; 202. Rubber sleeve; 203. Damping spring; 204. Fixing block; 205. First positioning rod; 206. Connecting shaft; 207. Second positioning rod; 208. Limiting block; 209. First fixing block; 210. Third positioning rod; 211. Second fixing block; 3. Installation mechanism; 301. Mounting box; 302. Filter screen; 303. Air compressor; 304. Air pipe; 305. Cylinder; 306. Barrier block; 307. Rubber block; 308. First support block; 309. First connecting rod; 310. Second connecting rod; 311. Second support block; 312. Third support block; 313. Damper; 314. Spring. Detailed Implementation

[0027] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5 As shown, this utility model is a pneumatic locking device for mine ventilation doors, including a mine tunnel 1. Several ventilation doors 101 are hinged to the inner wall of the mine tunnel 1. Several sensors 102 are fixedly connected to the inner wall of the mine tunnel 1. Since the sensors 102 are located directly above the ventilation doors 101, when the ventilation doors 101 are opened, the sensors 102 will receive a signal, thereby activating the air compressor 303 connected to the ventilation door 101 on the other side, opening it and allowing airflow inside the mine tunnel 1 to pass through.

[0029] A limiting mechanism 2 is installed on the inner wall of the mine shaft 1. The limiting mechanism 2 includes a positioning block 201. The outer wall of the positioning block 201 is fixedly connected to the inner wall of the mine shaft 1. A rubber sleeve 202 is fixedly connected to the inner wall of the positioning block 201. The rubber sleeve 202 isolates the positioning block 201 from the air pipe 304 and prevents the air pipe 304 from shaking due to the friction of the rubber sleeve 202 itself. A damping spring 203 is fixedly connected to the inner wall of the positioning block 201. A fixing block 204 is fixedly connected to the outer wall of the end of the damping spring 203 away from the positioning block 201. The deformation of the rubber sleeve 202 pushes the internal fixing block 204 to move. The fixed block 204 moves and compresses the damping spring 203 inside the rubber sleeve 202, thereby using the elasticity of the damping spring 203 to relieve and absorb the pressure and vibration on the fixed block 204. Several first positioning rods 205 are rotatably connected to the inner wall of the fixed block 204. A connecting shaft 206 is rotatably connected to the outer wall of the first positioning rod 205 away from the fixed block 204. The movement of the fixed block 204 pushes the first positioning rods 205 to rotate around the interior of the fixed block 204, while simultaneously pushing the connecting shaft 206 to move. A second positioning rod 207 is rotatably connected to the outer wall of the connecting shaft 206. The outer wall of the second positioning rod 207 is rotatably connected to a limiting block 208. The outer wall of the end of the second positioning rod 207 furthest from the limiting block 208 is rotatably connected to a first fixing block 209. The movement of the connecting shaft 206 pulls the second positioning rod 207, causing it to rotate around the first fixing block 209, while simultaneously pushing the limiting block 208 to move. The movement of the limiting block 208 pulls the rubber sleeve 202, causing it to wrap around more than half of the air tube 304, thus preventing the air tube 304 from shaking. The inner wall of the limiting block 208 is rotatably connected to a third positioning rod 210, and the outer wall of the third positioning rod 210 is rotatably connected to a second fixing block 211. The movement of the positioning block 208 pulls the third positioning rod 210 to rotate around the second fixed block 211. The rotation of the third positioning rod 210 stabilizes the movement of the limiting block 208 and limits the range of movement of the limiting block 208. This prevents the limiting block 208 from putting too much pressure on the air pipe 304, which would cause the air pipe 304 to collapse and prevent normal gas flow. The inner wall of the mine tunnel 1 is provided with an installation mechanism 3. The outer wall of the limiting block 208 is fixedly connected to the inner wall of the rubber sleeve 202. The outer wall of the first fixed block 209 is fixedly connected to the inner wall of the positioning block 201. The outer wall of the second fixed block 211 is fixedly connected to the inner wall of the positioning block 201.

[0030] The installation mechanism 3 includes an installation box 301. The outer wall of the installation box 301 is fixedly connected to the inner wall of the mine tunnel 1. A filter screen 302 is snapped into the inner wall of the installation box 301. The filter screen 302 can prevent dust inside the mine tunnel 1 from entering the air compressor 303. The air compressor 303 is inserted into the inner wall of the installation box 301. The air compressor 303 is started by the sensor 102. An air pipe 304 is fixedly connected to the bottom outer wall of the air compressor 303. The outer wall of the air pipe 304 is inserted into the inner wall of the installation box 301. A cylinder 305 is fixedly connected to the outer wall of the end of the installation box 301 away from the air compressor 303. The outer wall of the cylinder 305 is fixedly connected to the inner wall of the mine tunnel 1. The air when the air compressor 303 is turned on is discharged into the cylinder 305 through the connection of the air pipe 304. The cylinder 305 extends automatically and pushes the blocking block 306 to block the damper 101 to prevent the air from flowing.

[0031] A stop block 306 is fixedly connected to the outer wall of cylinder 305. Several rubber blocks 307 are slidably connected to the inner wall of mounting box 301. The friction of the rubber blocks 307 can effectively confine the air compressor 303 inside the mounting box 301. A first support block 308 is fixedly connected to the outer wall of the rubber blocks 307. Several first connecting rods 309 are rotatably connected to the outer wall of the first support block 308. A second connecting rod 310 is rotatably connected to the outer wall of the first connecting rod 309 away from the first support block 308. A second support block 311 is rotatably connected to the outer wall of the second connecting rod 310. The movement of the first support block 308 pushes the first connecting rod 309 to rotate around the outer side of the first support block 308, while simultaneously pushing the second connecting rod 310 to rotate around the outer side of the second support block 311. The first connecting rod 309 and the second connecting rod 310 are connected to support the movement of the first support block 308, so that the rubber block 307 can fully contact the surface of the air compressor 303. The outer wall of the second support block 311 is fixedly connected to the inner wall of the mounting box 301. The outer wall of the second connecting rod 310 is rotatably connected to the third support block 312. The outer wall of the third support block 312 is fixedly connected to the damper 313. The outer wall of the damper 313 is fixedly connected to the spring 314. When the second connecting rod 310 rotates, it will drive the third support block 312 to move, and the two third support blocks 312 will pull the damper 313 and the spring 314. Thus, the damper 313 and the spring 314 work together to relieve and absorb the pressure and vibration on the second connecting rod 310 and the first connecting rod 309.

[0032] One specific application of this embodiment is:

[0033] When workers need to use the equipment, the mounting box 301 and the positioning block 201 are fixed inside the mine shaft 1 by rivets or other means. Then, the air compressor 303 is placed inside the mounting box 301. The movement of the air compressor 303 pushes the two rubber blocks 307 inside the mounting box 301 to move in opposite directions. The movement of the rubber blocks 307 pushes the first support block 308 to move. The first support block 308 pushes the first connecting rod 309 to rotate around the first support block 308, while simultaneously pushing the second connecting rod 310 to rotate around the second support block 311. The connection between the first connecting rod 309 and the second connecting rod 310 effectively supports the movement of the first support block 308 and stabilizes it. The movement of the fixed rubber block 307 ensures that it can fully contact the surface of the air compressor 303, thereby increasing the friction between the rubber block 307 and the air compressor 303 and increasing the stability of the air compressor 303 inside the mounting box 301. Then, the filter screen 302 is secured inside the mounting box 301, blocking the top of the air compressor 303. Next, an air pipe 304 is inserted through the bottom of the mounting box 301 into the air compressor 303, with its other end connected to the cylinder 305. The suspended portion of the air pipe 304 is then inserted into the interior of multiple positioning blocks 201. The movement of the air pipe 304 pushes the rubber sleeve 202 inside the positioning blocks 201, causing it to deform. The deformation of the rubber sleeve 202 pushes... As the fixed block 204 moves, it compresses the damping spring 203 on its rear side. The elasticity of the damping spring 203 relieves and absorbs the pressure on the fixed block 204. The movement of the fixed block 204 causes the first positioning rod 205 to move, which in turn moves the connecting shaft 206. The movement of the connecting shaft 206 causes the second positioning rod 207 to rotate around the first fixed block 209. The rotation of the second positioning rod 207 pushes the limiting block 208 to move. The movement of the limiting block 208 pushes the outer side of the rubber sleeve 202, causing the rubber sleeve 202 to wrap around the air tube 304 inside the positioning block 201, thereby confining the air tube 304 within the positioning block 201. Inside, the remaining positioning blocks 201 restrict part of the air pipe 304 in the same way to prevent it from colliding with the mine car due to being suspended in the air. Then, one side of the air door 101 is opened. The rotation of the air door 101 passes through the sensor 102 above and is sensed by the sensor 102. Then, the sensor 102 will start the air compressor 303 on the other side to open automatically. At this time, the outside air will be discharged into the cylinder 305 through the air pipe 304 and cause the cylinder 305 to extend automatically. The extension of the cylinder 305 pushes the blocking block 306 to block the air door 101 on the other side and prevent it from rotating. In this way, when one side of the air door 101 is opened, the other side of the air door 101 will be blocked by the blocking block 306 and cannot be opened.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A pneumatic locking device for a mine ventilation door, comprising a mine shaft (1), characterized in that: The inner wall of the mine shaft (1) is hinged with several air doors (101), and the inner wall of the mine shaft (1) is fixedly connected with several sensors (102); The inner wall of the mine shaft (1) is provided with a limiting mechanism (2). The limiting mechanism (2) includes a positioning block (201). The outer wall of the positioning block (201) is fixedly connected to the inner wall of the mine shaft (1). A rubber sleeve (202) is fixedly connected to the inner wall of the positioning block (201). A damping spring (203) is fixedly connected to the inner wall of the positioning block (201). A fixing block (204) is fixedly connected to the outer wall of the end of the damping spring (203) away from the positioning block (201). A plurality of first positioning rods (205) are rotatably connected to the inner wall of the fixing block (204). The first positioning rods (205) are located away from the inner wall of the positioning block (201). A connecting shaft (206) is rotatably connected to the outer wall of one end of the fixing block (204). A second positioning rod (207) is rotatably connected to the outer wall of the connecting shaft (206). A limit block (208) is rotatably connected to the outer wall of the second positioning rod (207). A first fixing block (209) is rotatably connected to the outer wall of the second positioning rod (207) away from the limit block (208). A third positioning rod (210) is rotatably connected to the inner wall of the limit block (208). A second fixing block (211) is rotatably connected to the outer wall of the third positioning rod (210). An installation mechanism (3) is provided on the inner wall of the mine tunnel (1).

2. The pneumatic locking device for a mine ventilation door according to claim 1, characterized in that, The outer wall of the limiting block (208) is fixedly connected to the inner wall of the rubber sleeve (202), the outer wall of the first fixing block (209) is fixedly connected to the inner wall of the positioning block (201), and the outer wall of the second fixing block (211) is fixedly connected to the inner wall of the positioning block (201).

3. The pneumatic locking device for a mine ventilation door according to claim 2, characterized in that, The installation mechanism (3) includes an installation box (301), the outer wall of which is fixedly connected to the inner wall of the mine (1), a filter screen (302) is snapped into the inner wall of the installation box (301), an air compressor (303) is inserted into the inner wall of the installation box (301), an air pipe (304) is fixedly connected to the bottom outer wall of the air compressor (303), and the outer wall of the air pipe (304) is inserted into the inner wall of the installation box (301).

4. A pneumatic locking device for a mine ventilation door according to claim 3, characterized in that, A cylinder (305) is fixedly connected to the outer wall of the end of the mounting box (301) away from the air compressor (303), and the outer wall of the cylinder (305) is fixedly connected to the inner wall of the mine (1).

5. A pneumatic locking device for a mine ventilation door according to claim 4, characterized in that, A blocking block (306) is fixedly connected to the outer wall of the cylinder (305), and a plurality of rubber blocks (307) are slidably connected to the inner wall of the mounting box (301). A first support block (308) is fixedly connected to the outer wall of the rubber blocks (307).

6. A pneumatic locking device for a mine ventilation door according to claim 5, characterized in that, The outer wall of the first support block (308) is rotatably connected to a plurality of first connecting rods (309), and the outer wall of the first connecting rod (309) away from the first support block (308) is rotatably connected to a second connecting rod (310).

7. A pneumatic locking device for a mine ventilation door according to claim 6, characterized in that, The outer wall of the second connecting rod (310) is rotatably connected to a second support block (311), the outer wall of the second support block (311) is fixedly connected to the inner wall of the mounting box (301), and the outer wall of the second connecting rod (310) is rotatably connected to a third support block (312).

8. A pneumatic locking device for a mine ventilation door according to claim 7, characterized in that, A damper (313) is fixedly connected to the outer wall of the third support block (312), and a spring (314) is fixedly connected to the outer wall of the damper (313).

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