Safety locking device for air door of underground roadway of coal mine
By designing a safety interlocking device for ventilation doors in underground coal mine roadways, the problem of traditional ventilation doors being easily opened simultaneously has been solved, achieving ventilation balance and safety within the mine and ensuring the effective release of toxic and harmful gases.
Patent Information
- Application Number
- CN202520036222.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2035-01-08
AI Technical Summary
The locking devices of traditional underground ventilation doors in coal mines can easily lead to the simultaneous opening of both doors, causing ventilation system disorder, affecting the stability and safety of mine ventilation, and failing to effectively release toxic and harmful gases.
A safety interlocking device for ventilation doors in underground coal mine roadways was designed. Through the combination of components such as support frame, support plate, ventilation pipe, sealing column, pulley, traction rope and locking plate, it ensures that only one ventilation pipe is opened at a time, realizing individual ventilation, and the opening status is indicated by indicator light.
It ensures balanced ventilation within the mine, effectively releases toxic and harmful gases, improves mine safety and the stability of the ventilation system, and is easy to operate.
Smart Images
Figure CN223510962U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mine ventilation door technology, specifically a safety interlocking device for ventilation doors in underground coal mine roadways. Background Technology
[0002] Air doors are important ventilation facilities in underground coal mines. Once they malfunction, they can cause a large amount of air leakage or airflow short circuit, affecting the stability of mine ventilation and threatening the ventilation safety of the mine.
[0003] Traditional air doors initially used counterweights and interlocking limit devices, which were inexpensive but posed certain risks to the underground ventilation system. The interlocking device could easily cause both air doors to open simultaneously, disrupting the ventilation system, resulting in insufficient air supply to the roadway, and preventing toxic and harmful gases from being properly released from the mine, thus leading to safety risks and compromising safe production. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a safety interlocking device for ventilation doors in underground coal mine roadways, which has the advantages of good locking effect and convenient operation, thus solving the problems mentioned in the background technology.
[0005] This utility model provides the following technical solution: a safety interlocking device for ventilation doors in underground coal mine roadways, comprising a support frame, a support plate fixedly mounted on the outer wall of the support frame, a first ventilation pipe installed on the outer wall of the support plate, a second ventilation pipe installed on the outer wall of the support plate, a sealing column movably sleeved within the inner cavity of the first ventilation pipe, a first pulley rotatably connected to the top of the sealing column, a traction rope rollingly connected to the outer wall of the first pulley, a locking plate rotatably connected to the outer wall of the support plate, a control plate fixedly mounted on the top of the support frame, an mounting frame fixedly mounted on the top of the support plate, an auxiliary wheel rotatably connected to the inner cavity of the mounting frame, a rotating rod fixedly mounted on the outer wall of the auxiliary wheel, a trigger rod fixedly mounted on the outer wall of the rotating rod, a trigger switch fixedly mounted on the outer wall of the mounting frame, a second pulley fixedly mounted on the outer wall of the support frame, and an indicator light fixedly mounted on the outer wall of the control plate.
[0006] As a preferred technical solution of this utility model: the inner diameter of the first ventilation pipe is equal to the outer diameter of the closed column, and the outer wall of the traction rope is in rolling connection with the outer wall of the second pulley.
[0007] As a preferred technical solution of this utility model: the outer wall of the end of the traction rope away from the first pulley is connected to the outer wall of the support frame, and the traction rope is made of nylon fiber.
[0008] As a preferred technical solution of this utility model: the outer walls of the locking plate are in contact with the outer walls of the first ventilation pipe and the second ventilation pipe respectively, and the outer wall of the auxiliary wheel is in contact with the outer wall of the sealing column.
[0009] As a preferred technical solution of this utility model: the outer wall of the trigger rod is in contact with the outer wall of the trigger switch, and the trigger switch is electrically connected to the control board.
[0010] As a preferred technical solution of this utility model: there are two mounting brackets, and the two mounting brackets are respectively installed on both sides of the outer wall of the support plate.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] 1. The safety interlocking device for ventilation doors in underground coal mine roadways uses a locking plate installed on the outer wall of the support plate. When the closing column on one side is pulled, the locking plate rotates under the action of the closing column, which restricts the rotation of the closing column on the other side. This ensures that only one ventilation pipe on each side can be opened at the same time, maintaining balanced ventilation in the mine and better releasing toxic and harmful gases from the mine, thus ensuring a safe and balanced working environment in the mine.
[0013] 2. The safety interlocking device for the ventilation doors in the underground roadways of this coal mine uses an installation frame set on the outer wall of the support plate and an auxiliary wheel set in the inner cavity of the installation frame. When the closing column on either side moves upward, it will drive the auxiliary wheel on that side to rotate, thereby rotating the trigger rod and triggering the trigger switch. Once triggered, the indicator light will be lit under the action of the control panel to indicate which ventilation pipe is open, making it easier to observe which ventilation pipe is open. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a schematic diagram of the support frame structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the support plate structure of this utility model;
[0017] Figure 4 This is a schematic diagram of the No. 1 ventilation pipe structure of this utility model;
[0018] Figure 5 This is a schematic diagram of the mounting bracket structure of this utility model.
[0019] In the diagram: 1. Support frame; 2. Support plate; 3. Ventilation pipe No. 1; 4. Ventilation pipe No. 2; 5. Enclosed column; 6. Pulley No. 1; 7. Traction rope; 8. Locking plate; 9. Control panel; 10. Mounting frame; 11. Auxiliary wheel; 12. Rotating rod; 13. Trigger rod; 14. Trigger switch; 15. Pulley No. 2; 16. Indicator light. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1 - Figure 5 A safety interlocking device for ventilation doors in underground coal mine roadways includes a support frame 1. A support plate 2 is fixedly mounted on the outer wall of the support frame 1. A first ventilation pipe 3 is installed on the outer wall of the support plate 2. A second ventilation pipe 4 is installed on the outer wall of the support plate 2. A sealing column 5 is movably sleeved in the inner cavity of the first ventilation pipe 3. A first pulley 6 is rotatably connected to the top of the sealing column 5. A traction rope 7 is rotatably connected to the outer wall of the first pulley 6. A locking plate 8 is rotatably connected to the outer wall of the support plate 2. A control plate 9 is fixedly mounted on the top of the support frame 1. An installation frame 10 is fixedly mounted on the top of the support plate 2. An auxiliary wheel 11 is rotatably connected to the inner cavity of the installation frame 10. A rotating rod 12 is fixedly mounted on the outer wall of the auxiliary wheel 11. A trigger rod 13 is fixedly mounted on the outer wall of the rotating rod 12. A trigger switch 14 is fixedly mounted on the outer wall of the installation frame 10. A second pulley 15 is fixedly mounted on the outer wall of the support frame 1. An indicator light 16 is fixedly mounted on the outer wall of the control plate 9.
[0022] In the above structure, the support plate 2 installed on the outer wall of the support frame 1, and the first ventilation pipe 3 and the second ventilation pipe 4 installed on the outer wall of the support plate 2, can play a role in guiding air under the action of the first ventilation pipe 3 and the second ventilation pipe 4, thereby ventilating the mine and realizing the circulation of air in the mine.
[0023] In a preferred embodiment: the inner diameter of the first ventilation pipe 3 is equal to the outer diameter of the sealing column 5, and the outer wall of the traction rope 7 is in rolling connection with the outer wall of the second pulley 15.
[0024] In the above structure, the sealing column 5 installed in the inner cavity of the No. 1 ventilation pipe 3 can block the inner cavity of the No. 1 ventilation pipe 3 under the action of the sealing column 5, so that the inner cavity of the No. 1 ventilation pipe 3 is blocked, preventing air from escaping out of the inner cavity of the No. 1 ventilation pipe 3, thereby realizing the connection between the gas in the mine and the gas outside.
[0025] In a preferred embodiment, the outer wall of the end of the traction rope 7 away from the pulley 6 is connected to the outer wall of the support frame 1, and the traction rope 7 is made of nylon fiber.
[0026] In the above structure, the traction rope 7 installed in the inner cavity of the first pulley 6 and the inner cavity of the second pulley 15 can pull the sealing column 5 under the action of the traction rope 7. Thus, when the traction rope 7 is pulled, the sealing column 5 can move upward from the inner cavity of the first ventilation pipe 3, and the inner cavity of the first ventilation pipe 3 will be in a connected state.
[0027] In a preferred embodiment: the outer walls of the locking plate 8 are in contact with the outer walls of the first ventilation pipe 3 and the second ventilation pipe 4 respectively, and the outer wall of the auxiliary wheel 11 is in contact with the outer wall of the sealing column 5.
[0028] In the above structure, the locking plate 8 is set on the outer wall of the support plate 2. When the locking plate 8 is on the outer wall of the support plate 2, it will tend to one side. At this time, the locking plate 8 can block the closing column 5 under the action of the outer wall, so that the closing column 5 close to one side of the locking plate 8 cannot be pulled out from the inner cavity of the first ventilation pipe 3. At this time, under the action of the locking plate 8, only one of the closing columns 5 in the inner cavity of the first ventilation pipe 3 and the second ventilation pipe 4 can move upward.
[0029] In a preferred embodiment: the outer wall of the trigger rod 13 contacts the outer wall of the trigger switch 14, and the trigger switch 14 is electrically connected to the control board 9.
[0030] In the above structure, the trigger rod 13 set on the outer wall of the auxiliary wheel 11 will drive the auxiliary wheel 11 to rotate when the closed column 5 moves upward under the action of the traction rope 7 and the first pulley 6. This will cause the outer wall of the trigger rod 13 to trigger the trigger switch 14 when it rotates, and the trigger switch 14 will transmit an electrical signal to the control board 9. At this time, the control board 9 will light up, and then the corresponding indicator light 16 will be lit up under the action of the control board 9.
[0031] In a preferred embodiment, there are two mounting brackets 10, and the two mounting brackets 10 are respectively installed on both sides of the outer wall of the support plate 2.
[0032] In the above structure, the mounting brackets 10 are installed on both sides of the outer wall of the support plate 2, and the auxiliary wheel 11 is rotatably connected to the inner wall of the mounting bracket 10. When the sealing column 5 in the inner cavity of the first ventilation pipe 3 or the second ventilation pipe 4 moves upward, it will drive the auxiliary wheel 11 to rotate under the action of the sealing column 5. When the auxiliary wheel 11 rotates, it triggers the trigger switch 14, and the corresponding indicator light 16 can be lit under the action of the control board 9.
[0033] Working Principle: During the use of the above equipment, when ventilation is required in the mine, to ensure the stability of ventilation, one of the ventilation pipes, No. 1 ventilation pipe 3 or No. 2 ventilation pipe 4, needs to be opened. This requires pulling the sealing column 5 upwards from the inner cavity of either ventilation pipe 3 or No. 2 ventilation pipe 4. By pulling the traction rope 7, the No. 1 pulley 6 moves upwards, causing the sealing column 5 to move upwards from the inner cavity of ventilation pipe 3. Once the sealing column 5 moves upwards from the inner cavity of ventilation pipe 3, the inner cavity of ventilation pipe 3 is opened. As the sealing column 5 moves upwards along the inner wall of ventilation pipe 3, it drives the auxiliary wheel 11 to rotate, which in turn drives the trigger rod 13 to rotate. When the sealing column 5 is completely open from the inner cavity of the ventilation pipe... When the trigger rod 13 moves out, its outer wall contacts the outer wall of the trigger switch 14, thereby opening the trigger switch 14. Under the action of the control board 9, the indicator light 16 is lit, thus serving as an indicator. This allows for a clearer observation of the opening and closing of ventilation pipe 3 and ventilation pipe 4. When the sealing column 5 in the inner cavity of ventilation pipe 3 moves upward, the locking plate 8 rotates towards the side closer to ventilation pipe 4 under the action of the outer wall of the sealing column 5. At this time, the outer wall of the locking plate 8 restricts the sealing column 5 in the inner cavity of ventilation pipe 4, preventing it from moving upward and opening. This allows for the opening of either ventilation pipe 3 or ventilation pipe 4, thus better ensuring the stability of ventilation in the mine.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A safety interlocking device for ventilation doors in underground coal mine roadways, comprising a support frame (1), characterized in that: A support plate (2) is fixedly mounted on the outer wall of the support frame (1). A first ventilation pipe (3) is installed on the outer wall of the support plate (2). A second ventilation pipe (4) is installed on the outer wall of the support plate (2). A sealing column (5) is movably sleeved in the inner cavity of the first ventilation pipe (3). A first pulley (6) is rotatably connected to the top of the sealing column (5). A traction rope (7) is rotatably connected to the outer wall of the first pulley (6). A locking plate (8) is rotatably connected to the outer wall of the support plate (2). A fixed top of the support frame (1) is equipped with... The control board (9) has a mounting bracket (10) fixedly mounted on the top of the support plate (2). An auxiliary wheel (11) is rotatably connected to the inner cavity of the mounting bracket (10). A rotating rod (12) is fixedly mounted on the outer wall of the auxiliary wheel (11). A trigger rod (13) is fixedly mounted on the outer wall of the rotating rod (12). A trigger switch (14) is fixedly mounted on the outer wall of the mounting bracket (10). A second pulley (15) is fixedly mounted on the outer wall of the support frame (1). An indicator light (16) is fixedly mounted on the outer wall of the control board (9).
2. The safety interlocking device for ventilation doors in underground coal mine roadways according to claim 1, characterized in that: The inner diameter of the first ventilation pipe (3) is equal to the outer diameter of the sealing column (5), and the outer wall of the traction rope (7) is rolledly connected to the outer wall of the second pulley (15).
3. The safety interlocking device for ventilation doors in underground coal mine roadways according to claim 1, characterized in that: The outer wall of the end of the traction rope (7) away from the first pulley (6) is connected to the outer wall of the support frame (1), and the traction rope (7) is made of nylon fiber.
4. The safety interlocking device for ventilation doors in underground coal mine roadways according to claim 1, characterized in that: The outer walls of the locking plate (8) are in contact with the outer walls of the first ventilation pipe (3) and the second ventilation pipe (4) respectively, and the outer wall of the auxiliary wheel (11) is in contact with the outer wall of the sealing column (5).
5. The safety interlocking device for ventilation doors in underground coal mine roadways according to claim 1, characterized in that: The outer wall of the trigger rod (13) is in contact with the outer wall of the trigger switch (14), and the trigger switch (14) is electrically connected to the control board (9).
6. The safety interlocking device for ventilation doors in underground coal mine roadways according to claim 1, characterized in that: There are two mounting brackets (10), and the two mounting brackets (10) are respectively installed on both sides of the outer wall of the support plate (2).