Air door escape device for underground emergency

Abstract

The utility model belongs to the technical field of automatic air doors, and particularly discloses an underground emergency air door escape device which comprises a door frame, door bodies and an escape door, the two door bodies are hinged to the door frame and arranged oppositely, a hydraulic push rod is rotationally connected to the top end of the door frame, a telescopic rod of the hydraulic push rod is rotationally connected with the door bodies, and the escape door is connected with the telescopic rod of the hydraulic push rod. An escape exit is formed in the door body, an escape door is hinged in the escape exit, and an adjusting air window driven by an independent power supply is formed in the escape exit. An existing underground air door cannot automatically release pressure after a hydraulic station is suddenly powered off, so that the air door cannot be opened, personnel are trapped in a laneway, and potential safety hazards exist. According to the utility model, the independent escape door is arranged, and the escape air windows are arranged on the door body and the escape door, so that when a fault occurs underground, air pressure is released, and a worker can open the escape door to evacuate from the underground.

Description

Technical Field

[0001] This utility model relates to the field of automatic air door technology, specifically to an underground emergency air door escape device. Background Technology

[0002] Underground ventilation doors are crucial components of coal mine ventilation systems. Their primary functions are to control airflow direction, regulate air volume, and isolate airflow to ensure ventilation safety underground. The design and installation of these doors directly impact the ventilation efficiency and worker safety in coal mines. Therefore, the research and application of underground ventilation doors in coal mines are of great significance.

[0003] Patent publication number CN216788463U discloses an automatic airlock for underground coal mines, including a door frame, a door panel one installed on the inner wall of the door frame, a door panel two installed on the inner wall of the door frame, an L-shaped connecting rod one fixedly connected to the surface of the door panel one, an L-shaped connecting rod two fixedly connected to the surface of the door panel two, a hydraulic push rod movably connected to the side of the door frame, a bearing rod rotatably connected to the surface of the L-shaped connecting rod one, and an emergency escape device provided on the side of the door panel two; the rotation of the anti-slip rod causes the toothed plate to move upward, thereby driving the square door to slide on the inner wall of the built-in sliding groove, which is beneficial in the event of an accident in the underground coal mine that prevents the automatic airlock from opening, allowing the square door to slide on the inner wall of the built-in sliding groove, facilitating the escape of workers in the event of an accident, and reducing the friction generated during the sliding of the square door on the inner wall of the built-in sliding groove.

[0004] The hydraulic station in the above scheme cannot automatically release pressure after a sudden power outage, which prevents the air door from opening and traps personnel in the shaft, posing a safety hazard. Utility Model Content

[0005] The purpose of this utility model is to provide an emergency escape device for underground ventilation doors, in order to solve the problem that the hydraulic station cannot automatically release pressure after a sudden power outage, resulting in the ventilation door being unable to open and personnel being trapped in the mine tunnel, posing a dangerous hazard.

[0006] To achieve the above objectives, the basic solution provided by this utility model is as follows: an underground emergency escape door device, comprising a door frame, a door body, and an escape door, two door bodies being hinged to the door frame and arranged opposite to each other, a hydraulic push rod being rotatably connected to the top of the door frame, the telescopic rod of the hydraulic push rod being rotatably connected to the door body, an escape exit being provided on the door body, and an escape door being hinged inside the escape exit.

[0007] The principle and beneficial effects of this utility model are as follows: When the hydraulic station is working normally, the hydraulic push rod can open or close the air doors on both sides to ensure the normal entry and exit of personnel and vehicles, and can adjust the airflow direction and volume in the well. In the event of an accident in the coal mine that causes the hydraulic station to lose power and the hydraulic push rod to stop working, the workers cannot pass through the air door area to escape. The underground workers can manually open the escape door and evacuate the well through the safety passage from the escape exit.

[0008] Option 2, a preferred option of the basic scheme, features a sealing plate around the edge of the escape door. Mine ventilation systems require precise airflow control; poor sealing of the air doors can lead to erratic airflow and leaks, disrupting the ventilation system. The sealing plate around the escape door prevents air leakage and also serves as a limiting element.

[0009] Option 3, a preferred option of the basic option, has a first sealing strip fixedly connected to the sealing plate, thereby improving the sealing effect of the sealing plate.

[0010] Option 4, a preferred option of the basic scheme, features adjustable air vents on the door and escape door, with several adjustable air vanes installed within each vent. Rotating these vanes adjusts the direction and volume of airflow. Due to the pressure difference on both sides of the escape door, especially in areas with higher pressure, the significant pressure difference can make the escape door difficult to open. The air pressure can be released through the adjustable air vents, allowing the escape door to open normally.

[0011] Option 5, a preferred embodiment of the basic option, features rotating shafts at both ends of the regulating air vane. These shafts pass through and are rotatably connected to the regulating air window. Gears are fixedly connected to the rotating shafts, with adjacent gears meshing with each other. A drive motor is installed inside the door, and its output shaft is fixedly connected to the rotating shaft near the door frame. The regulating air vane is controlled by a small motor with an independent power supply. Even if the hydraulic station fails, the regulating air vane can still operate normally. Through gear transmission, one motor controls one set of regulating air vanes.

[0012] Option six, a preferred embodiment of the basic option, features a second sealing strip fixedly connected to the edge of the regulating air vane. When the regulating air vane is fully closed, it blocks airflow, and the second sealing strip increases the seal between the regulating air vanes, preventing air leakage from the regulating air vent. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of an underground emergency escape door device according to the present invention;

[0014] Figure 2 This is a front view of an underground emergency escape door device according to this utility model;

[0015] Figure 3 yes Figure 2A magnified view of a portion of point A in the middle. Detailed Implementation

[0016] The present invention will be further described in detail below through specific embodiments:

[0017] The reference numerals in the accompanying drawings are as follows: 1-door frame, 2-door body, 3-escape door, 4-hydraulic push rod, 5-escape exit, 6-sealing plate, 7-first sealing strip, 8-adjustable vent, 9-adjustable air vane, 10-rotating shaft, 11-gear, 12-motor, 13-second sealing strip.

[0018] Example

[0019] like Figures 1 to 3 As shown: An underground emergency escape device includes a door frame 1, a door body 2, and an escape door 3. Two door bodies 2 are arranged opposite each other to form a double door. The two door bodies 2 are respectively hinged to the door frame 1. A hydraulic push rod 4 is rotatably connected to the door frame 1. The telescopic rod of the hydraulic push rod 4 is rotatably connected to the door body 2. An escape exit 5 is opened on the door body 2. An escape door 3 is hinged inside the escape exit 5. An adjustable air window 8 is opened on both the escape door 3 and the door body 2. Several adjustable air plates 9 are installed in the adjustable air window 8. A rotating shaft 110 is provided at both ends of the adjustable air plate 9. The rotating shaft passes through the upper and lower frames of the adjustable air window 8. A gear 11 is fixedly connected to each rotating shaft 10. Two adjacent gears 11 mesh with each other. A cavity is opened in the door body 2 and the escape door 3. A motor 12 is installed in the cavity. The cavity and the side of the motor 12 near the door frame 1 are connected to the output shaft of the motor 12. The edge of the escape door 3 is provided with a sealing plate 6, and a first sealing strip 7 is adhered to the sealing plate 6. The edge of the regulating air plate 9 is adhered with a second sealing strip 13.

[0020] The implementation method of this embodiment is as follows: Due to the difference in airflow pressure on both sides of the damper, the damper is difficult to open manually. When the hydraulic station is working normally, the opening and closing degree of the door body 2 is controlled by controlling the extension and retraction of the hydraulic push rod 4, and the air volume and airflow direction are adjusted. The damper is fully opened by the hydraulic push rod 4, allowing pedestrians and vehicles to pass through.

[0021] When an accident occurs in a coal mine and the air door cannot be opened, starting the motor 12 and rotating the adjusting air plate 9 can slightly adjust the air volume and airflow direction, and release the pressure on the escape door 3, allowing workers to open the escape door 3.

[0022] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An emergency escape device for underground ventilation doors, characterized in that, It includes a door frame (1), a door body (2) and an escape door (3). The two door bodies (2) are hinged to the door frame (1) and are arranged opposite to each other. A hydraulic push rod (4) is rotatably connected to the top of the door frame (1). The telescopic rod of the hydraulic push rod (4) is rotatably connected to the door body (2). An escape exit (5) is opened on the door body (2), and an escape door (3) is hinged inside the escape exit (5).

2. The emergency escape device for underground mine ventilation doors according to claim 1, characterized in that... The escape door (3) has a sealing plate (6) on its edge.

3. The underground emergency escape device according to claim 2, characterized in that, A first sealing strip (7) is fixedly connected to the sealing plate (6).

4. The emergency escape device for underground mine ventilation doors according to claim 1, characterized in that, The door (2) and the escape door (3) are provided with adjustable air windows (8), and several adjustable air plates (9) are installed inside the adjustable air windows (8).

5. The emergency escape device for underground mine ventilation doors according to claim 4, characterized in that... The regulating wind plate (9) has a rotating shaft (10) at both ends. The rotating shaft (10) passes through the regulating wind window (8) and is rotatably connected to the regulating wind window (8). A gear (11) is fixedly connected on the rotating shaft (10). The adjacent gears (11) mesh with each other. A drive motor (12) is installed inside the door body (2). The output shaft of the drive motor (12) is fixedly connected to the rotating shaft (10) near the door frame (1).

6. The underground emergency escape device according to claim 4, characterized in that, The edge of the regulating air plate (9) is fixedly connected with a second sealing strip (13).

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