CN218971246U - Underground coal mine air door anti-pinch device - Google Patents
Underground coal mine air door anti-pinch device Download PDFInfo
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- CN218971246U CN218971246U CN202320047605.0U CN202320047605U CN218971246U CN 218971246 U CN218971246 U CN 218971246U CN 202320047605 U CN202320047605 U CN 202320047605U CN 218971246 U CN218971246 U CN 218971246U
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- door
- door leaf
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- controller
- air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model discloses an underground coal mine air door anti-pinch device, which comprises a door leaf, wherein one side of the door leaf is connected with a door shaft, the door leaf is arranged on a door frame through the door shaft, an opening and closing cylinder is arranged between the top surface of the door leaf and the door frame, two ends of the opening and closing cylinder are respectively hinged on the door leaf and the door frame, and the opening and closing cylinder is connected with an electromagnetic valve for controlling the opening and closing cylinder to extend or retract; the front side and the rear side of the door leaf are respectively provided with a safety grating, the safety gratings are electrically connected with a controller, and the controller and the electromagnetic valve are also electrically connected; through the arrangement of the safety grating and the controller, when a person or other obstacles exist between the door leaf of the air door and the door leaf of the air door when the door leaf is closed, part of light rays emitted by the emitting end of the safety grating cannot be received by the receiving end, the safety grating judges that the person or the obstacle exists, signals are sent to the controller and controls the electromagnetic valve to act so that the opening and closing air cylinder stops acting or stretches out of the door leaf, the phenomenon that the door is clamped by the air door is effectively prevented, and safe and normal operation of the air door is ensured.
Description
Technical Field
The utility model relates to the technical field of coal mine safety equipment, in particular to an underground coal mine air door anti-pinch device.
Background
Dampers are the most common and important ventilation facilities in underground coal mine ventilation systems. At present, the underground air doors of all coal mines basically realize the functions of wind control, automation, interlocking and the like, and the purpose of opening and closing the air doors can be achieved by controlling the air valves, so that the underground air doors of all coal mines are greatly improved compared with the prior manual opening and closing air doors. However, the currently used pneumatic air door has certain defects: if the air valve is frequently used for controlling the opening and closing of the air door, the air door is slow in response, and the air door acts only after the air valve is opened for a long time; due to the air valve or the air path, the air door is automatically closed and the like. The downhole damper basically achieves wind control automation, but still does not achieve intrinsic safety. After the underground pneumatic air door is put into use, accidents of clamping personnel by a plurality of air doors happen in the underground coal mines. Although various methods are adopted for each mine to prevent the occurrence of the accident of clamping the air door, the problem is not fundamentally solved.
Disclosure of Invention
The utility model aims to provide an underground coal mine air door anti-pinch device for solving the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the underground coal mine air door anti-pinch device comprises a door leaf, wherein one side of the door leaf is connected with a door shaft, the door leaf is arranged on a door frame through the door shaft, an opening and closing cylinder is arranged between the top surface of the door leaf and the door frame, two ends of the opening and closing cylinder are respectively hinged to the door leaf and the door frame, and the opening and closing cylinder is connected with an electromagnetic valve for controlling the opening and closing cylinder to extend or retract;
the safety gratings are arranged on the front side and the rear side of the door leaf, the safety gratings are electrically connected with a controller, and the controller and the electromagnetic valve are electrically connected.
Preferably, an audible and visual alarm is arranged on the door frame above the door leaf, and the audible and visual alarm is electrically connected with the controller.
Preferably, the safety grating is an infrared safety grating or a laser safety grating.
Preferably, the controller is a control device using a PLC as a control core.
The beneficial effects are that: compared with the prior art, the utility model has the beneficial effects that: through the arrangement of the safety grating and the controller, when a person or other obstacles exist between the door leaf of the air door and the door leaf of the air door when the door leaf is closed, part of light rays emitted by the emitting end of the safety grating cannot be received by the receiving end, the safety grating judges that the person or the obstacle exists, signals are sent to the controller and control the electromagnetic valve to act so as to stop the opening and closing of the air cylinder or extend out of the door leaf, and meanwhile, the audible and visual alarm can send an alarm signal to warn the person, so that the phenomenon that the door is clamped by the air door is effectively prevented, and safe and normal operation of the air door is ensured.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an anti-pinch device for an underground coal mine air door.
Fig. 2 is a schematic view (top view) of the opening and closing structure of the air door.
Fig. 3 is a control block diagram of the underground coal mine air door anti-pinch device provided by the utility model.
In the accompanying drawings: 1-door leaf, 2-door axle, 3-opening and closing cylinder, 4-safety grating, 5-audible and visual alarm, 6-controller and 7-solenoid valve.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.
Examples
Referring to the drawings of the specification, in the embodiment of the utility model, an underground coal mine air door anti-pinch device comprises a door leaf 1, wherein one side of the door leaf 1 is connected with a door shaft 2, the door leaf 1 is arranged on a door frame through the door shaft 2, an opening and closing cylinder 3 is arranged between the top surface of the door leaf 1 and the door frame, two ends of the opening and closing cylinder 3 are respectively hinged on the door leaf 1 and the door frame, and the opening and closing cylinder 3 is connected with an electromagnetic valve 7 for controlling the opening and closing cylinder 3 to extend or retract;
the safety grating 4 is arranged on the front side and the rear side of the door leaf 1, the safety grating 4 is electrically connected with the controller 6, and the controller 6 and the electromagnetic valve 7 are electrically connected.
Further, an audible and visual alarm 5 is installed on the door frame above the door leaf 1, and the audible and visual alarm 5 is electrically connected with the controller 6.
Further, the safety grating 4 is an infrared safety grating or a laser safety grating.
Further, the controller 6 is a control device using a PLC as a control core.
According to the utility model, through the arrangement of the safety grating and the controller, when a person or other obstacles exist between the door leaf of the air door when the door leaf of the air door is closed, part of light rays emitted by the emitting end of the safety grating cannot be received by the receiving end, the safety grating judges that the person or the obstacle exists, signals are sent to the controller and controls the electromagnetic valve to act so as to stop the opening and closing cylinder or extend out of the door leaf, thereby effectively preventing the occurrence of the phenomenon of clamping the air door and ensuring the safe and normal operation of the air door; the utility model has the advantages of this application simple structure, the practicality is strong, and easy operation is worth promoting.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent.
Claims (4)
1. The utility model provides a colliery underground air door anti-pinch device which characterized in that: the door comprises a door leaf (1), wherein one side of the door leaf (1) is connected with a door shaft (2), the door leaf (1) is arranged on a door frame through the door shaft (2), an opening and closing cylinder (3) is arranged between the top surface of the door leaf (1) and the door frame, two ends of the opening and closing cylinder (3) are respectively hinged to the door leaf (1) and the door frame, and the opening and closing cylinder (3) is connected with an electromagnetic valve (7) for controlling the opening and closing cylinder (3) to stretch out or shrink;
both sides all are provided with safety grating (4) around door leaf (1), safety grating (4) electric connection has controller (6), also be electric connection between controller (6) and solenoid valve (7).
2. The underground coal mine air door anti-pinch device according to claim 1, wherein: an audible and visual alarm (5) is arranged on the door frame above the door leaf (1), and the audible and visual alarm (5) is electrically connected with the controller (6).
3. The underground coal mine air door anti-pinch device according to claim 1, wherein: the safety grating (4) is an infrared safety grating or a laser safety grating.
4. The underground coal mine air door anti-pinch device according to claim 1, wherein: the controller (6) is a control device taking a PLC as a control core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320047605.0U CN218971246U (en) | 2023-01-07 | 2023-01-07 | Underground coal mine air door anti-pinch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320047605.0U CN218971246U (en) | 2023-01-07 | 2023-01-07 | Underground coal mine air door anti-pinch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218971246U true CN218971246U (en) | 2023-05-05 |
Family
ID=86167359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320047605.0U Active CN218971246U (en) | 2023-01-07 | 2023-01-07 | Underground coal mine air door anti-pinch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218971246U (en) |
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2023
- 2023-01-07 CN CN202320047605.0U patent/CN218971246U/en active Active
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