Airtight door for underground coal mine

Abstract

The utility model discloses an underground coal mine air-tight door which comprises a transverse plate, the lower end of the transverse plate is fixedly connected with a vertical plate, a sliding cavity is formed in the transverse plate, a door body is connected between the front inner wall and the rear inner wall of the sliding cavity in a sliding mode, a plurality of pulleys are installed at the lower end of the door body, and two limiting blocks are fixedly connected to the left side of the door body. And connecting blocks are fixedly connected to one sides of the two limiting blocks correspondingly, wedge-shaped grooves are formed in the two connecting blocks correspondingly, and a connecting mechanism used for a door body is arranged below the transverse plate. After the two electromagnets are powered on, the corresponding magnetic sliding plates are driven to move and enter the corresponding vertical cavities through the magnetic effect, then the two wedge-shaped blocks leave the corresponding wedge-shaped grooves, at the moment, under the elastic effect of the multiple extrusion springs, the two extrusion plates can rapidly move rightwards, then the large elastic effect is exerted on the door body, and the door body is prevented from falling off. The door body can be quickly bounced off, escape time is shortened, and casualty risks in disasters and accidents are effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of sealed doors, and in particular to a sealed door for use in underground coal mines. Background Art

[0002] In the safety design of underground refuge chambers in coal mines, sealed doors are one of the key facilities to ensure the safety of personnel. Currently, there are many sealed doors for coal mines on the market, most of which use mechanical locking mechanisms to achieve door closing and sealing. However, these existing technical solutions generally have the following disadvantages: traditional locking mechanisms often require manual operation of multiple components, which is not only time-consuming and labor-intensive, but may also cause delays in emergency situations due to cumbersome operations. Due to the lack of precision in the design of the locking mechanism, it is easy to loosen after long-term use, resulting in poor sealing effect and affecting mine safety. At the same time, during emergency evacuation or rescue, the existing sealed doors are slow to open, which is not conducive to rapid evacuation and increases safety risks.

[0003] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0004] In order to solve the problem that there are many kinds of sealed doors for coal mines on the market, most of them use mechanical locking mechanisms to achieve the closing and sealing of the door body. However, these existing technical solutions generally have the following shortcomings: traditional locking mechanisms often require manual operation of multiple components, which is not only time-consuming and labor-intensive, but may also cause delays due to cumbersome operations in emergency situations. Since the locking mechanism is not designed precisely, it is easy to loosen after long-term use, resulting in poor sealing effect and affecting mine safety. At the same time, during emergency evacuation or rescue, the opening process of the existing sealed door is slow, which is not conducive to rapid evacuation and increases safety risks. The present application provides a sealed door for underground coal mines.

[0005] The present application provides a closed door for underground coal mines using the following technical solutions:

[0006] A closed door for use underground in coal mines comprises a horizontal plate, the lower end of which is fixedly connected to a vertical plate, a sliding cavity being provided in the horizontal plate, a door body being slidably connected between the front and rear inner walls of the sliding cavity, a plurality of pulleys being installed at the lower end of the door body, two limit blocks being fixedly connected to the left side of the door body, one side of each of the two limit blocks being fixedly connected to a connecting block, a wedge-shaped groove being provided in each of the two connecting blocks, and a connecting mechanism for the door body being provided below the horizontal plate.

[0007] Preferably, the connecting mechanism includes two rectangular cavities opened in the vertical plate, and the two rectangular cavities cooperate with corresponding limit blocks. There are two vertical cavities opened in the vertical plate, and the two vertical cavities are connected to the interior of adjacent rectangular cavities.

[0008] Preferably, wedge blocks are horizontally arranged in the two rectangular cavities, and the two wedge blocks cooperate with the corresponding wedge grooves. The opposite back surfaces of the two wedge blocks are fixedly connected with magnetic slides, and the two magnetic slides are elastically connected to the front and rear inner walls of the corresponding vertical cavities. Two cavities are opened in the vertical plate, and electromagnets are installed in the two cavities.

[0009] Preferably, the opposite back surfaces of the two magnetic slides are elastically connected to the inner walls of the corresponding vertical cavities through two connecting springs. After the two electromagnets are energized, they are anisotropically attracted to the adjacent surfaces of the corresponding magnetic slides. A push handle is fixedly connected to the front side of the door body, and a control switch is installed on the front side of the push handle. Both electromagnets are electrically connected to the control switch.

[0010] Preferably, an extrusion plate is slidably connected between the upper and lower inner walls of the two rectangular cavities, and the left sides of the two extrusion plates are elastically connected to the inner walls of the corresponding rectangular cavities through two extrusion springs.

[0011] Preferably, a limiting cavity for the door body is provided in the vertical plate, a first sealing ring is provided around the inner wall of the limiting cavity, and a second sealing ring cooperating with the first sealing ring is provided on the left side of the door body.

[0012] In summary, this application has the following beneficial technical effects:

[0013] 1. When the door body enters the vertical plate, the two connecting blocks on the door body will be stuck in the corresponding rectangular cavity. When the two connecting blocks pass the corresponding wedge blocks, they will push the corresponding wedge blocks into the corresponding vertical cavity. When the two wedge blocks reach the corresponding wedge grooves, they will be elastically acted upon by the connecting springs and the wedge blocks will be stuck in the wedge grooves. At this time, the two extrusion plates will also be pushed to the left, and the multiple extrusion springs will be in a compressed state. Under the elastic action of the extrusion springs, the two extrusion plates will give the connecting blocks a rightward force, which cooperates with the limit of the wedge blocks to make the door body more tightly limited. Cooperating with the first sealing ring and the second sealing ring, it ensures that the door body maintains an excellent sealing effect, effectively prevents the leakage of harmful gases, and ensures the stability and reliability of use.

[0014] 2. When the door needs to be opened, press the control switch to energize the two electromagnets. After the two electromagnets are energized, the corresponding magnetic slides are driven by magnetic action to move into the corresponding vertical cavities, thereby causing the two wedge blocks to leave the corresponding wedge grooves. At this time, under the elastic action of multiple extrusion springs, the two extrusion plates will quickly move to the right, thereby giving the door a greater elastic effect, enabling the door to quickly open, shortening the escape time, and effectively reducing the risk of casualties in disaster accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the application;

[0016] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the application;

[0017] Figure 3 It is an embodiment of the application Figure 2 Enlarged view of point A.

[0018] Explanation of the accompanying symbols: 1. Horizontal plate; 2. Sliding cavity; 3. Door body; 4. Vertical plate; 5. Push handle; 6. Connecting block; 7. Limiting block; 8. Wedge groove; 9. Pulley; 10. Rectangular cavity; 11. Wedge block; 12. Vertical cavity; 13. Electromagnet; 14. Connecting spring; 15. Magnetic slide; 16. Extrusion plate; 17. Extrusion spring. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-3 This application is described in further detail.

[0020] The embodiment of the present application discloses a closed door for underground coal mines. Figure 1-3 A closed door for underground coal mines includes a horizontal plate 1, the lower end of the horizontal plate 1 is fixedly connected to a vertical plate 4, a sliding cavity 2 is opened in the horizontal plate 1, a door body 3 is slidably connected between the front and rear inner walls of the sliding cavity 2, and a plurality of pulleys 9 are installed at the lower end of the door body 3. Two limit blocks 7 are fixedly connected to the left side of the door body 3, and one side of the two limit blocks 7 is fixedly connected to a connecting block 6. A wedge-shaped groove 8 is opened in the two connecting blocks 6, and a connecting mechanism for the door body 3 is provided below the horizontal plate 1.

[0021] Reference Figure 1-3 The connecting mechanism includes two rectangular cavities 10 provided in the vertical plate 4, and the two rectangular cavities 10 cooperate with the corresponding limit blocks 7. Two vertical cavities 12 are provided in the vertical plate 4, and the two vertical cavities 12 are connected to the interior of the adjacent rectangular cavities 10. Wedge blocks 11 are horizontally arranged in the two rectangular cavities 10, and the two wedge blocks 11 cooperate with the corresponding wedge grooves 8. The opposite back surfaces of the two wedge blocks 11 are fixedly connected with magnetic slides 15, and the two magnetic slides 15 are elastically connected to the front and rear inner walls of the corresponding vertical cavities 12. Two cavities are provided in the vertical plate 4, and electromagnets 13 are installed in the two cavities. The opposite back surfaces of the two magnetic slides 15 are elastically connected to the inner walls of the corresponding vertical cavities 12 through two connecting springs 14. When the two electromagnets 13 are energized, they are anisotropically attracted to the adjacent surfaces of the corresponding magnetic slides 15. A push handle 5 is fixedly connected to the front side of the door body 3, and a control switch is installed in the front side of the push handle 5. The two electromagnets 13 are electrically connected to the control switch.

[0022] When the door body 3 enters the vertical plate 4, the two connecting blocks 6 on the door body 3 will be stuck in the corresponding rectangular cavity 10. When the two connecting blocks 6 pass the corresponding wedge blocks 11, they will push the corresponding wedge blocks 11 into the corresponding vertical cavity 12. When the two wedge blocks 11 reach the corresponding wedge grooves 8, they will be elastically acted upon by the connecting springs 14, and the wedge blocks 11 will be stuck in the wedge grooves 8. At this time, the two extrusion plates 16 will also be pushed to the left, and the multiple extrusion springs 17 will be in a compressed state. Under the elastic action of the extrusion springs 17, the two extrusion plates 16 will give the connecting block 6 a rightward force, which cooperates with the limit of the wedge block 11, so that the door body 3 can be limited more tightly.

[0023] Reference Figure 2-3 An extrusion plate 16 is slidably connected between the upper and lower inner walls of the two rectangular cavities 10 , and the left sides of the two extrusion plates 16 are elastically connected to the inner walls of the corresponding rectangular cavities 10 through two extrusion springs 17 .

[0024] Pressing the control switch energizes the two electromagnets 13. After the two electromagnets 13 are energized, the corresponding magnetic slides 15 are driven to move into the corresponding vertical cavities 12 through magnetic action, thereby causing the two wedge blocks 11 to leave the corresponding wedge grooves 8. At this time, under the elastic action of multiple extrusion springs 17, the two extrusion plates 16 will quickly move to the right, thereby giving the door body 3 a greater elastic effect, thereby realizing the rapid opening of the door body 3.

[0025] Reference Figure 1-2 A limiting cavity for the door body 3 is provided in the vertical plate 4, a first sealing ring is provided around the inner wall of the limiting cavity, and a second sealing ring that cooperates with the first sealing ring is provided on the left side of the door body 3.

[0026] When the door is closed, the door body 3 can be pushed into the vertical plate 4 directly by the push handle 5. When the door body 3 enters the vertical plate 4, the two connecting blocks 6 on the door body 3 will be stuck in the corresponding rectangular cavity 10. When the two connecting blocks 6 pass the corresponding wedge blocks 11, the corresponding wedge blocks 11 will be pushed into the corresponding vertical cavity 12. When the two wedge blocks 11 reach the corresponding wedge grooves 8, they are elastically acted upon by the connecting springs 14, and the wedge blocks 11 will be stuck in the wedge grooves 8. At this time, the two extrusion plates 16 will also be pushed to the left, and the multiple extrusion springs 17 are in a compressed state. The two extrusion plates 16 will give the connecting blocks 6 a rightward force under the elastic action of the extrusion springs 17, and cooperate with the limit of the wedge blocks 11, so that the door body 3 can be limited more tightly, and cooperate with the first sealing ring and the second sealing ring to ensure that the door body 3 maintains an excellent sealing effect, effectively preventing harmful gas leakage, and ensuring stability and reliability in use.

[0027] When the door body 3 needs to be opened, the control switch is pressed to energize the two electromagnets 13. After the two electromagnets 13 are energized, the corresponding magnetic slides 15 are driven by magnetic action to move into the corresponding vertical cavities 12, thereby causing the two wedge blocks 11 to leave the corresponding wedge grooves 8. At this time, under the elastic action of multiple extrusion springs 17, the two extrusion plates 16 will quickly move to the right, thereby giving the door body 3 a greater elastic effect, realizing the rapid opening of the door body 3, shortening the escape time, and effectively reducing the risk of casualties in disaster accidents.

[0028] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0029] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0030] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0031] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A closed door for underground coal mines, comprising a horizontal plate (1), characterized in that: The lower end of the horizontal plate (1) is fixedly connected to the vertical plate (4), a sliding cavity (2) is provided in the horizontal plate (1), a door body (3) is slidably connected between the front and rear inner walls of the sliding cavity (2), a plurality of pulleys (9) are installed at the lower end of the door body (3), two limit blocks (7) are fixedly connected to the left side of the door body (3), one side of each of the two limit blocks (7) is fixedly connected to a connecting block (6), and a wedge-shaped groove (8) is provided in each of the two connecting blocks (6), and a connecting mechanism for the door body (3) is provided below the horizontal plate (1).

2. The closed door for underground coal mine according to claim 1, characterized in that: The connecting mechanism comprises two rectangular cavities (10) provided in the vertical plate (4), the two rectangular cavities (10) being mutually matched with corresponding limit blocks (7), and two vertical cavities (12) being provided in the vertical plate (4), the two vertical cavities (12) being communicated with the interior of adjacent rectangular cavities (10).

3. The closed door for underground coal mine according to claim 2, characterized in that: Wedge blocks (11) are horizontally arranged in the two rectangular cavities (10), and the two wedge blocks (11) cooperate with the corresponding wedge grooves (8). The back surfaces of the two wedge blocks (11) are fixedly connected with magnetic slides (15), and the two magnetic slides (15) are elastically connected to the front and rear inner walls of the corresponding vertical cavity (12). Two cavities are opened in the vertical plate (4), and electromagnets (13) are installed in the two cavities.

4. The closed door for underground coal mine according to claim 3, characterized in that: The opposite back surfaces of the two magnetic slides (15) are elastically connected to the inner wall of the corresponding vertical cavity (12) through two connecting springs (14). When the two electromagnets (13) are energized, they attract the adjacent surfaces of the corresponding magnetic slides (15) in an opposite manner. The front side of the door body (3) is fixedly connected to a push handle (5). A control switch is installed on the front side of the push handle (5). The two electromagnets (13) are electrically connected to the control switch.

5. The closed door for underground coal mine according to claim 4, characterized in that: An extrusion plate (16) is slidably connected between the upper and lower inner walls of the two rectangular cavities (10), and the left sides of the two extrusion plates (16) are elastically connected to the inner walls of the corresponding rectangular cavities (10) through two extrusion springs (17).

6. The closed door for underground coal mine according to claim 5, characterized in that: A limiting cavity for the door body (3) is provided in the vertical plate (4), a first sealing ring is provided around the inner wall of the limiting cavity, and a second sealing ring cooperating with the first sealing ring is provided on the left side of the door body (3).

Images