Automatic closing air door for mine

Abstract

The utility model belongs to the technical field of mine air doors, and particularly relates to an automatic closing air door for a mine, which comprises a door frame, two door leaves, a transmission component, a driving component, a control module, a monitoring component, a limiting component I and a limiting component II, two supporting shafts are rotationally installed in a door opening in the door frame, a strip-shaped groove is formed in the top of the front side of the door frame, the transmission assembly is arranged in the strip-shaped groove, the top ends of the two supporting shafts extend into the strip-shaped groove and are connected with the transmission assembly, and the two door leaves are fixedly installed on the corresponding supporting shafts in the radial direction. The automatic closing air door for the mine is reasonable in design, harmful gas in the mine can be prevented from being diffused into an operation area due to the wind flow disorder phenomenon in the mine, the life safety of underground operators can be guaranteed, meanwhile, the practicability of the automatic closing air door for the mine can be improved, and the service life of the automatic closing air door for the mine can be prolonged. Therefore, the device is suitable for being widely popularized and used.

Description

Technical Field

[0001] The utility model relates to the technical field of mine air doors, in particular to an automatic closing air door for mines. Background Art

[0002] In the mine ventilation system, the damper is one of the important devices for regulating the airflow. However, traditional mine dampers often have some problems, such as airflow turbulence and the diffusion of harmful gases, which pose a serious threat to the life safety of underground workers. Therefore, how to design a mine damper that can automatically close and avoid airflow turbulence and the diffusion of harmful gases has become a problem that needs to be solved urgently.

[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0004] The utility model aims to solve the shortcomings mentioned in the above background technology and proposes an automatic closing damper for mines.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions: an automatic closing damper for a mine, comprising a door frame, two door leaves, a transmission assembly, a drive assembly, a control module, a monitoring assembly, a limit assembly 1 and a limit assembly 2;

[0006] Two supporting shafts are rotatably installed in the door opening on the door frame, a strip groove is provided on the front top of the door frame, the transmission assembly is arranged in the strip groove, the top ends of the two supporting shafts extend into the strip groove and are connected to the transmission assembly, the two door leaves are radially fixedly installed on the corresponding supporting shafts, and mounting grooves are provided on the two door leaves. The driving assembly is arranged in the two mounting grooves and is connected to the top inner wall of the door frame, the control module is arranged in the door frame and is connected to the driving assembly, the monitoring assembly is arranged on the front and rear sides of the door frame and is connected to the control module, the limit assembly 1 is arranged in the door opening of the door frame and is adapted to the two door leaves, and the limit assembly 2 is arranged in the strip groove and is connected to the transmission assembly.

[0007] Preferably, the driving assembly includes two hydraulic cylinders, two supporting pins and two rotating pins, the supporting pins are rotatably mounted on the bottom inner walls of the two mounting grooves, the hydraulic cylinders are radially fixedly mounted on the two supporting pins, the rotating pins are radially fixedly mounted on the working ends of the two hydraulic cylinders, and the two rotating pins are rotatably mounted on the top inner wall of the door opening of the door frame.

[0008] Preferably, the transmission assembly includes a chain and two sprockets, the top ends of the two support shafts are fixedly sleeved with sprockets, and the two sprockets are transmission-connected with the same chain.

[0009] Preferably, the control module includes a controller and a control panel, the controller is fixedly installed in the door frame, the control panel is fixedly installed on the front side of the door frame, the control panel is electrically connected to the controller, and both hydraulic cylinders are electrically connected to the controller.

[0010] Preferably, the monitoring component includes two air pressure sensors, and air pressure sensors are fixedly installed on the front and rear sides of the door frame, and the two air pressure sensors are electrically connected to the controller.

[0011] Preferably, the limiting component 1 includes two limiting bars, and the limiting bars are fixedly installed on the inner walls on both sides of the door opening of the door frame, and the two limiting bars are respectively in active contact with the corresponding door leaves.

[0012] Preferably, the second limiting component includes two guide blocks, the two guide blocks are fixedly installed in the strip-shaped opening, and the chain passes through the two guide blocks.

[0013] Preferably, a cover plate is fixedly mounted on the front side of the inner wall of the strip-shaped opening by screws.

[0014] Preferably, a push switch is fixedly mounted on one side of the limit bar close to the door leaf, and the push switch is electrically connected to the hydraulic cylinder via a controller.

[0015] The beneficial effects of the utility model are:

[0016] By setting up a monitoring component, the air pressure on the front and rear sides of the door frame can be monitored in real time, and the opening and closing of the door leaf can be controlled by the controller according to the changes in the air pressure on both sides with the cooperation of the control module, thereby avoiding the diffusion of harmful gases in the mine to the working area due to wind turbulence in the mine, thereby ensuring the safety of underground workers. The driving component set up can realize the opening and closing operation of the two door leaves with the cooperation of the control module. At the same time, by setting up a transmission component, the two support shafts can keep rotating synchronously, so that when any hydraulic cylinder in the driving component fails, it will not affect the normal opening and closing of the door leaf, thereby improving the practicality of automatic closing dampers for mines.

[0017] By setting the limit component one, the door leaf can be limited to avoid excessive deflection. By setting the limit component two, a guide can be provided for the chain, and the chain can be prevented from falling due to its own weight to affect the transmission of the sprocket through the chain, and the chain can also be cleaned to a certain extent. By setting the cover plate in the strip mouth, the later replacement and maintenance of the sprocket and chain are convenient, thereby extending the service life of the automatic closing damper for mines.

[0018] To sum up, the utility model is reasonably designed. It can not only prevent harmful gases in the mine from spreading to the working area due to wind turbulence in the mine, thereby ensuring the safety of underground workers, but also improve the practicality and service life of automatic closing dampers for mines. It has strong practicality and reliability, and is therefore suitable for widespread promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of an automatic closing air door for mines proposed by the utility model;

[0021] Figure 2 This is a schematic cross-sectional view of an automatic closing damper for a mine proposed by the utility model;

[0022] Figure 3 This is a partial three-dimensional structural schematic diagram of an automatic closing air door for mines proposed by the utility model;

[0023] Figure 4 The utility model is a schematic structural diagram of a limit strip portion in an automatic closing damper for a mine.

[0024] In the figure: 1. door frame; 11. limit strip; 12. cover plate; 2. door leaf; 201. mounting groove; 21. support shaft; 22. sprocket; 23. chain; 24. guide block; 25. hydraulic cylinder; 251. support pin; 26. rotating pin; 3. controller; 31. control panel; 32. air pressure sensor; 33. push switch. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Reference Figure 1-4, an automatic closing damper for a mine, comprises a door frame 1 and two door leaves 2, two support shafts 21 are rotatably installed in the door opening on the door frame 1, and the two door leaves 2 are radially fixedly installed on the corresponding support shafts 21, a strip groove is provided on the top of the front side of the door frame 1, the top ends of the two support shafts 21 extend into the strip groove and are respectively fixedly sleeved with sprockets 22, and the two sprockets 22 are connected with the same chain 23 for transmission, so that the two support shafts 21 can keep rotating synchronously, so that the normal opening and closing of the door leaves 2 can be affected when any hydraulic cylinder 25 fails, a mounting groove 201 is provided on the two door leaves 2, and support pins 251 are rotatably installed on the bottom inner walls of the two mounting grooves 201, and hydraulic cylinders 25 are radially fixedly installed on the two support pins 251, and rotating pins 26 are radially fixedly installed on the working ends of the two hydraulic cylinders 25, and the two rotating pins 26 are rotatably installed on the top inner wall of the door opening of the door frame 1, so as to control the door leaf 2 to open and close the door opening, and a controller 3 is fixedly installed in the door frame 1, and the door A control panel 31 is fixedly installed on the front side of the frame 1, and the control panel 31 is electrically connected to the controller 3, and the two hydraulic cylinders 25 are electrically connected to the controller 3, so that the hydraulic cylinders 25 can be controlled through the control panel 31, and air pressure sensors 32 are fixedly installed on the front and rear sides of the door frame 1, and the two air pressure sensors 32 are electrically connected to the controller 3, so that the air pressure on the front and rear sides of the door frame 1 can be monitored in real time, and the switch of the door leaf 2 can be controlled through the controller 3 according to the changes in the air pressure on both sides, and the limit strips 11 are fixedly installed on the inner walls on both sides of the door opening of the door frame 1, and the two limit strips 11 are respectively in active contact with the corresponding door leaf 2, so as to limit the door leaf 2, thereby avoiding excessive deflection, and two guide blocks 24 are fixedly installed in the strip mouth, and the chain 23 passes through the two guide blocks 24, which can provide guidance for the chain 23, and at the same time can avoid the chain 23 from falling due to its own weight to affect the sprocket 22 to transmit through the chain 23, and can also provide a cleaning effect for the chain 23 to a certain extent.

[0027] In this embodiment, in order to facilitate the later replacement and maintenance of the sprocket 22 and the chain 23, a cover plate 12 is fixedly installed on the front side of the inner wall of the strip opening by screws, which can provide shielding for the strip opening.

[0028] In this embodiment, in order to promptly control the hydraulic cylinder 25 to stop working after the door leaf 2 is closed, a push switch 33 is fixedly installed on the side of the limit bar 11 close to the door leaf 2, and the push switch 33 is electrically connected to the hydraulic cylinder 25 through the controller 3.

[0029] The circuits, electronic components and module structures involved all adopt existing technologies, which can be fully implemented by those skilled in the art. Needless to say, the content protected by this application does not involve improvements to software, circuits and methods.

[0030] Working principle: When in use, first turn on the power. When the wind flow in the mine becomes turbulent, the air pressure sensor 32 will monitor the air pressure changes on both sides of the door frame 1 in real time, and transmit this information to the controller 3. The controller 3 controls the extension and retraction of the hydraulic cylinder 25 according to the received air pressure information, thereby driving the door leaf 2 to perform opening and closing operations. When the door leaf 2 is closed in place, it will press the press switch 33 to stop the hydraulic cylinder 25 from working.

[0031] In addition, by setting a limit strip 11, the door leaf 2 can be prevented from excessive deflection, thereby protecting the structural stability of the automatic closing damper for mines. Under the guidance of the guide block 24, the chain 23 can be prevented from falling due to its own weight and affecting the transmission of the sprocket 22, and can also clean the chain 23 to a certain extent, thereby extending its service life.

[0032] Through the above design, the automatic closing damper for mines can not only close the door leaf 2 in time when the wind flow is turbulent in the mine, preventing harmful gases from spreading to the working area and ensuring the life safety of underground workers, but also improve the practicality and service life of the automatic closing damper for mines through optimizing the structural design. It has strong practicality and reliability, and is therefore suitable for wide promotion and use.

[0033] The above is a detailed introduction to an automatic closing damper for mines provided by the utility model. This article uses specific embodiments to explain the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An automatic closing damper for a mine, characterized in that: It comprises a door frame (1), two door leaves (2), a transmission component, a drive component, a control module, a monitoring component, a limit component 1 and a limit component 2; Two support shafts (21) are rotatably mounted in the door opening on the door frame (1); a strip groove is provided on the front top of the door frame (1); the transmission assembly is arranged in the strip groove; the top ends of the two support shafts (21) extend into the strip groove and are connected to the transmission assembly; the two door leaves (2) are respectively radially fixedly mounted on the corresponding support shafts (21); the two door leaves (2) are provided with mounting grooves (201); the drive assembly is arranged in the two mounting grooves (201) and is connected to the top inner wall of the door frame (1); the control module is arranged in the door frame (1) and is connected to the drive assembly; the monitoring assembly is arranged on the front and rear sides of the door frame (1) and is connected to the control module; the first limit assembly is arranged in the door opening of the door frame (1) and is adapted to the two door leaves (2); the second limit assembly is arranged in the strip groove and is connected to the transmission assembly.

2. The automatic closing damper for mine according to claim 1, characterized in that: The driving assembly comprises two hydraulic cylinders (25), two supporting pins (251) and two rotating pins (26); the supporting pins (251) are rotatably mounted on the bottom inner walls of the two mounting grooves (201); the hydraulic cylinders (25) are radially fixedly mounted on the two supporting pins (251); the rotating pins (26) are radially fixedly mounted on the working ends of the two hydraulic cylinders (25); and the two rotating pins (26) are rotatably mounted on the top inner wall of the door opening of the door frame (1).

3. The automatic closing damper for mine according to claim 1, characterized in that: The transmission assembly comprises a chain (23) and two sprocket wheels (22). The top ends of the two support shafts (21) are fixedly sleeved with sprocket wheels (22), and the two sprocket wheels (22) are transmission-connected with the same chain (23).

4. The automatic closing damper for mine according to claim 2, characterized in that: The control module comprises a controller (3) and a control panel (31); the controller (3) is fixedly installed in the door frame (1); the control panel (31) is fixedly installed on the front side of the door frame (1); the control panel (31) is electrically connected to the controller (3); and both hydraulic cylinders (25) are electrically connected to the controller (3).

5. The automatic closing damper for mine according to claim 4, characterized in that: The monitoring component comprises two air pressure sensors (32), and the air pressure sensors (32) are fixedly installed on the front and rear sides of the door frame (1), and the two air pressure sensors (32) are electrically connected to the controller (3).

6. The automatic closing damper for mine according to claim 1, characterized in that: The first limiting component comprises two limiting strips (11), and the limiting strips (11) are fixedly mounted on the inner walls on both sides of the door opening of the door frame (1), and the two limiting strips (11) are respectively in active contact with the corresponding door leaves (2).

7. The automatic closing damper for mine according to claim 3, characterized in that: The second limiting component comprises two guide blocks (24), the two guide blocks (24) are fixedly installed in the strip-shaped opening, the chain (23) passes through the two guide blocks (24), and a cover plate (12) is fixedly installed on the front side of the inner wall of the strip-shaped opening by screws.

8. The automatic closing damper for mine according to claim 6, characterized in that: A push switch (33) is fixedly installed on one side of the limit strip (11) close to the door leaf (2), and the push switch (33) is electrically connected to the hydraulic cylinder (25) through the controller (3).

Images