Emergency door device and mounting method thereof

Abstract

The invention discloses an emergency door device and an installation method thereof.In the emergency door device, a sliding rail is arranged on the tunnel wall of a main tunnel and extends in the axial direction of the main tunnel, and a supporting frame is arranged in the main tunnel and right faces tunnel entrances of branch tunnels; when collapse or water seepage occurs in the sub-tunnel, a constructor can push the emergency door to move to a tunnel portal of the sub-tunnel along the sliding rail, and the supporting frame abuts against the end, away from the sub-tunnel, of the emergency door. Due to the fact that the sliding rail extends in the axial direction of the main tunnel, a constructor can more easily push the emergency door to close the tunnel portal of the branch tunnel, after the emergency door closes the branch tunnel, the supporting frame abuts against the end, away from the branch tunnel, of the emergency door, and the emergency door can more stably close the branch tunnel.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel protection devices, and in particular to an emergency door device and an installation method thereof. Background Art

[0002] During the construction of a tunnel, it is sometimes necessary to excavate a sub-tunnel on the tunnel wall of the main tunnel. In the process of connecting the sub-tunnel with the main tunnel, landslides, water seepage and other accidents are prone to occur in the sub-tunnel. In this case, a large amount of mud will flow into the main tunnel from the sub-tunnel, seriously threatening the safety of the construction workers in the main tunnel.

[0003] In the related art, in order to prevent the mud in the branch tunnel from flowing into the main tunnel, the construction workers will install a steel door at the tunnel entrance of the branch tunnel. One end of the steel door is hinged to the edge of the tunnel entrance of the branch tunnel through a hinge, so that the construction workers can close the tunnel entrance of the branch tunnel by turning the steel door.

[0004] However, when mud flows into the main tunnel from the branch tunnel, the mud will exert great pressure on the steel door, making it difficult for construction workers to drive the steel door to rotate. Summary of the invention

[0005] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art. In a first aspect, the present invention provides an emergency door device that is easier to close. In a second aspect, the present invention also provides an installation method for the emergency door device.

[0006] According to the first aspect of the present invention, the emergency door device provided in the embodiment is installed at the junction of the main tunnel and the branch tunnel, and the emergency door device includes a slide rail, an emergency door and a support frame: the slide rail is arranged on the tunnel wall of the main tunnel and is extended along the axial direction of the main tunnel; the emergency door is slidably arranged on the slide rail, and under the action of external force, the emergency door can slide along the slide rail to switch between an open state and a closed state. When the emergency door is in the open state, the emergency door is located on one side of the tunnel entrance of the branch tunnel, and when the emergency door is in the closed state, the emergency door is located at the tunnel entrance of the branch tunnel; the support frame is arranged in the main tunnel and is opposite to the tunnel entrance of the branch tunnel. When the emergency door is in the closed state, the support frame abuts against one end of the emergency door facing away from the branch tunnel.

[0007] The emergency door device described in the present invention has at least the following beneficial effects: in the emergency door device of the present application, the slide rail is arranged on the tunnel wall of the main tunnel and is extended along the axial direction of the main tunnel, and the support frame is arranged in the main tunnel and is opposite to the tunnel entrance of the branch tunnel; when collapse or water seepage occurs in the branch tunnel, the construction personnel can push the emergency door to move along the slide rail to the tunnel entrance of the branch tunnel, and make the support frame abut against the end of the emergency door facing away from the branch tunnel; because the slide rail is extended along the axial direction of the main tunnel, the construction personnel can more easily push the emergency door to close the tunnel entrance of the branch tunnel, and after the emergency door closes the branch tunnel, the support frame abuts against the end of the emergency door facing away from the branch tunnel, so that the emergency door can close the branch tunnel more stably.

[0008] According to the emergency door device described in the embodiment of the first aspect of the present invention, two emergency doors are provided, and the two emergency doors are symmetrically arranged about the tunnel entrance of the branch tunnel; two support frames are provided corresponding to the emergency doors, and the two support frames are respectively used to abut the two emergency doors.

[0009] The emergency door device described in the embodiment of the first aspect of the present invention also includes a locking assembly, and both support frames are provided with slots. The locking assembly includes a driving structure and a bolt, and the driving structure is connected to the bolt. The driving structure can drive the bolt to simultaneously pass through or detach from the slots of the two support frames.

[0010] According to the emergency door device described in the embodiment of the first aspect of the present invention, the driving structure includes a hand winch and a wire rope, the upper and lower ends of the wire rope are respectively connected to the door bolt and the driving end of the hand winch. Under the drive of the hand winch, the wire rope can drive the door bolt to perform lifting movements so that the door bolt can pass through or escape from the slot.

[0011] According to the emergency door device described in the embodiment of the first aspect of the present invention, the support frame includes multiple longitudinal beams and at least one transverse beam, the multiple longitudinal beams are horizontally spaced apart in the direction away from the sub-tunnel, the opposite ends of the longitudinal beams are connected to the tunnel wall of the main tunnel, the transverse beams are respectively abutted against each longitudinal beam, and the longitudinal beam closest to the sub-tunnel among the multiple longitudinal beams is used to abut against the emergency door.

[0012] According to the emergency door device described in the embodiment of the first aspect of the present invention, one end of the cross beam away from the branch tunnel is connected to the tunnel wall of the main tunnel.

[0013] According to the emergency door device described in the embodiment of the first aspect of the present invention, a grouting hole is opened on the emergency door.

[0014] According to the emergency door device described in the embodiment of the first aspect of the present invention, the slide rail is an angle steel, a pulley is installed on the emergency door, and the corners of the angle steel are inserted into the wheel groove of the pulley.

[0015] According to a second aspect of the present invention, a method for installing an emergency door device provides an embodiment, comprising the following steps:

[0016] The support frame is installed in the main tunnel so that the support frame faces the branch tunnel opened on the tunnel wall of the main tunnel;

[0017] A slide rail is installed on the tunnel wall of the main tunnel, the slide rail is extended along the axial direction of the main tunnel and is located on a side of the support frame close to the branch tunnel;

[0018] The emergency door is installed on the slide rail so that the emergency door can slide along the slide rail.

[0019] According to the method for installing the emergency door device of the second embodiment of the present invention, installing the support frame in the main tunnel includes the following steps:

[0020] Installing a plurality of longitudinal beams in the main tunnel, and connecting the upper and lower ends of the longitudinal beams to the tunnel walls of the main tunnel respectively, wherein the plurality of longitudinal beams are horizontally spaced apart in a direction away from the branch tunnel;

[0021] The cross beam is connected to each longitudinal beam respectively, and the end of the cross beam away from the branch tunnel is connected to the tunnel wall of the main tunnel. The cross beam and the longitudinal beam together form a supporting frame.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0024] Figure 1 A schematic structural diagram of an emergency door device according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A partial enlarged view of the structure at position A of the emergency door device shown;

[0026] Figure 3 for Figure 1 A partial enlarged view of the structure at position B of the emergency door device shown;

[0027] Figure 4 for Figure 1 A schematic diagram of the structure of an emergency door of the emergency door device shown;

[0028] Figure 5 for Figure 4 A schematic structural diagram of the emergency door from another perspective;

[0029] Figure 6 A flow chart of a method for installing an emergency door device according to an embodiment of the present invention;

[0030] Figure 7The present invention is a flowchart of installing a support frame in a main tunnel according to an embodiment of the present invention.

[0031] Reference numerals:

[0032] Main tunnel 10; concrete base 11; branch tunnel 20;

[0033] Slide rail 100;

[0034] Emergency door 200; pulley 201; grouting hole 202; door body 210; horizontal connecting piece 211; longitudinal connecting piece 212; steel plate 220;

[0035] Support frame 300; slot 301; longitudinal beam 310; cross beam 320;

[0036] Locking assembly 400; latch 410; wire rope 420. DETAILED DESCRIPTION

[0037] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0041] Reference below Figures 1 to 5 The emergency door device according to the first aspect of the present invention is described in detail.

[0042] It should be noted that during the construction of the tunnel, it is sometimes necessary to open a branch tunnel 20 on the tunnel wall of the main tunnel 10. However, during the construction of the branch tunnel 20, there may be problems such as collapse and leakage in the branch tunnel 20. When collapse, leakage and other problems occur in the branch tunnel 20, a large amount of mud will be generated in the branch tunnel 20. The mud will flow into the main tunnel 10 along the branch tunnel 20, thereby endangering the safety of the construction workers in the main tunnel 10.

[0043] In the present application, an example is taken in which the main tunnel 10 extends in the front-rear direction, the branch tunnel 20 extends in the left-right direction, and the branch tunnel 20 is arranged on the left side of the main tunnel 10 for description.

[0044] refer to Figure 1 According to an embodiment of the first aspect of the present invention, the emergency door device comprises a slide rail 100, an emergency door 200 and a support frame 300: the slide rail 100 is arranged on the tunnel wall of the main tunnel 10 and is extended along the axial direction of the main tunnel 10; the emergency door 200 is slidably arranged on the slide rail 100, and under the action of external force, the emergency door 200 can slide along the slide rail 100 to switch between an open state and a closed state. When the emergency door 200 is in the open state, the emergency door 200 is located at one side of the tunnel entrance of the branch tunnel 20, and when the emergency door 200 is in the closed state, the emergency door 200 is located at the tunnel entrance of the branch tunnel 20; the support frame 300 is arranged in the main tunnel 10 and is opposite to the tunnel entrance of the branch tunnel 20. When the emergency door 200 is in the closed state, the support frame 300 abuts against an end of the emergency door 200 away from the branch tunnel 20.

[0045] For example, 1 and Figure 2 As shown, the emergency door 200 device includes a slide rail 100, an emergency door 200 and a support frame 300. The slide rail 100 is arranged at the lower left end of the main tunnel 10 and extends in the front-to-back direction. The emergency door 200 is slidably arranged on the slide rail 100 in the front-to-back direction. Driven by construction personnel, the emergency door 200 can slide back and forth along the slide rail 100 so that the emergency door 200 can switch between an open state and a closed state. When the emergency door 200 is in the closed state, the emergency door 200 is located at the tunnel entrance of the branch tunnel 20. When the emergency door 200 is in the open state, the emergency door 200 is located at one side of the tunnel entrance of the branch tunnel 20 in the front-to-back direction. At this time, the branch tunnel 20 is connected with the main tunnel 10; the support frame 300 is arranged in the main tunnel 10 and is located on the right side of the branch tunnel 20.

[0046] Furthermore, when normal construction is in progress in the sub-tunnel 20, the emergency door 200 is in an open state. When an accident such as collapse or water seepage occurs in the sub-tunnel 20, the construction personnel can push the emergency door 200 to move forward and backward along the slide rail 100, so that the emergency door 200 switches from an open state to a closed state. At this time, the emergency door 200 can move to the tunnel entrance of the sub-tunnel 20 to separate the main tunnel 10 and the sub-tunnel 20, and the support frame 300 can abut the right side of the emergency door 200, so that the support frame 300 can assist the emergency door 200 in separating the main tunnel 10 and the sub-tunnel 20.

[0047] It can be understood that, since the slide rail 100 is arranged to extend along the axial direction of the main tunnel 10, the emergency door 200 can be pushed by the construction personnel to move along the axial direction of the main tunnel 10 to the tunnel entrance of the branch tunnel 20 to close the branch tunnel 20. During the movement of the emergency door 200 along the slide rail 100, the emergency door 200 is less affected by the mud pressure in the branch tunnel 20, and the construction personnel can save more effort in pushing the emergency door 200, so that when the mud in the branch tunnel 20 flows into the main tunnel 10, the construction personnel can more easily The emergency door 200 is pushed smoothly to close the sub-tunnel 20; at the same time, since the support frame 300 is located in the main tunnel 10 and is opposite to the tunnel entrance of the sub-tunnel 20, when the construction personnel push the emergency door 200 to close the sub-tunnel 20, the support frame 300 can abut against the end of the emergency door 200 away from the sub-tunnel 20, and the support frame 300 can reinforce the emergency door 200 so that the support frame 300 can assist the emergency door 200 in closing the sub-tunnel 20, thereby improving the stability of the emergency door 200 in closing the sub-tunnel 20.

[0048] In a further embodiment of the present invention, two emergency doors 200 are provided, and the two emergency doors 200 are symmetrically arranged about the tunnel entrance of the branch tunnel 20; two support frames 300 are provided corresponding to the emergency doors 200, and the two support frames 300 are respectively used to abut the two emergency doors 200.

[0049] It should be noted that when an accident such as collapse or water seepage occurs in the branch tunnel 20 , the construction workers need to push the emergency door 200 to close as quickly as possible.

[0050] In the emergency door device of this embodiment, since two emergency doors 200 are slidably provided on the slide rail 100, and the two emergency doors 200 are symmetrically arranged about the tunnel entrance of the sub-tunnel 20, when an accident such as collapse or water seepage occurs in the sub-tunnel 20, the construction personnel can push the two emergency doors 200 closer to each other along the slide rail 100 to jointly close the sub-tunnel 20.

[0051] It is understandable that the provision of two emergency doors 200 enables the moving stroke of the emergency door 200 to be smaller when the single emergency door 200 is switched between the open state and the closed state, thereby enabling construction workers to close the sub-tunnel 20 more quickly.

[0052] In some embodiments of the present invention, reference Figure 1 The emergency door device also includes a locking assembly 400, and a card slot 301 is provided on each of the two support frames 300. The locking assembly 400 includes a driving structure and a bolt 410. The driving structure is connected to the bolt 410, and the driving structure can drive the bolt 410 to simultaneously pass through or detach from the card slots 301 of the two support frames 300.

[0053] It can be understood that when the two emergency doors 200 are in a closed state, the two support frames 300 are respectively in contact with the two emergency doors 200. At this time, under the drive of the driving structure, the bolt 410 can be simultaneously inserted into the slots 301 of the two support frames 300, so that the two support frames 300 can form a whole, so that the two support frames 300 can cooperate with each other to support the two emergency doors 200, thereby improving the firmness of the emergency door 200 to close the sub-tunnel 20.

[0054] In some embodiments of the present invention, reference Figure 3 The driving structure includes a hand winch and a wire rope 420. The upper and lower ends of the wire rope 420 are respectively connected to the door latch 410 and the driving end of the hand winch. Under the drive of the hand winch, the wire rope 420 can drive the door latch 410 to move up and down so that the door latch 410 passes through or escapes from the slot 301.

[0055] Furthermore, when an emergency situation such as collapse or water seepage occurs in the branch tunnel 20, the construction personnel can push the emergency door 200 to a closed state so that the support frame 300 supports and reinforces the emergency door 200, and the construction personnel can drive the door bolt 410 through the card slot by a hand winch, so that the door bolt can further reinforce the emergency door.

[0056] It is understandable that the construction personnel can conveniently drive the door latch 410 to perform lifting motion by means of the hand winch, and further the construction personnel can conveniently drive the door latch 410 to pass through or escape from the slot 301 by means of the hand winch.

[0057] In some embodiments of the present invention, the support frame 300 includes multiple longitudinal beams 310 and at least one transverse beam 320. The multiple longitudinal beams 310 are horizontally spaced apart in a direction away from the branch tunnel 20. The opposite ends of the longitudinal beams 310 are connected to the tunnel wall of the main tunnel 10. The transverse beam 320 is respectively abutted against each longitudinal beam 310. The longitudinal beam 310 closest to the branch tunnel 20 among the multiple longitudinal beams 310 is used to abut against the emergency door 200.

[0058] For example, Figure 1 As shown, the support frame 300 includes two longitudinal beams 310 and three transverse beams 320. The two longitudinal beams 310 are spaced apart in steps along the left-right direction, and the longitudinal beam 310 on the left is used to abut against the emergency door 200. The upper and lower ends of the longitudinal beams 310 are connected to the tunnel wall of the main tunnel 10. The transverse beams 320 extend in the left-right direction, and the three transverse beams 320 are spaced apart in the vertical direction, and each transverse beam 320 is connected to each longitudinal beam 310.

[0059] It can be understood that since the opposite ends of the longitudinal beam 310 are connected to the tunnel wall of the main tunnel 10, the overall strength of the support frame 300 can be higher, and when the emergency door 200 is in a closed state, the support frame 300 can improve the emergency door 200 and provide stronger lateral strength.

[0060] In a further embodiment of the present invention, reference Figure 1 One end of the cross beam 320 away from the branch tunnel 20 is connected to the tunnel wall of the main tunnel 10 .

[0061] It can be understood that since the end of the beam 320 away from the branch tunnel 20 is connected to the tunnel wall of the main tunnel 10, when the emergency door 200 is in a closed state, the pressure applied to the emergency door 200 by the mud in the branch tunnel 20 can be transmitted to the tunnel wall of the main tunnel 10 through the support frame 300, thereby making the emergency door 200 have stronger lateral strength.

[0062] In some embodiments of the present invention, reference Figure 4 A grouting hole 202 is provided on the emergency door 200 .

[0063] It can be understood that by opening the grouting hole 202 on the emergency door 200, when an emergency situation such as collapse or water seepage occurs in the sub-tunnel 20, the construction personnel can push the emergency door 200 to be in a closed state, and then the construction personnel can inject grout into the sub-tunnel 20 through the grouting hole 202 to reinforce the soil in the sub-tunnel 20. After the soil in the sub-tunnel 20 is reinforced, the construction personnel can open the emergency door 200 to construct the sub-tunnel 20 again.

[0064] In some embodiments of the present invention, reference Figure 2 The slide rail 100 is an angle steel, and a pulley 201 is installed on the emergency door 200 , and the corners of the angle steel are inserted into the wheel groove of the pulley 201 .

[0065] Understandably, angle steel is widely used in construction and is easily available.

[0066] In a further embodiment of the present invention, in order to facilitate the installation of the angle steel on the wall of the main tunnel 10, reference is made to Figure 2 A concrete seat 11 is cast on the tunnel wall of the main tunnel 10, a horizontal mounting surface is arranged on the concrete seat 11, and an angle steel is arranged on the horizontal mounting surface.

[0067] In a further embodiment of the present invention, reference Figure 4 and Figure 5 The emergency door 200 includes a door body 210 and a steel plate 220 . The door body 210 is formed by welding a plurality of horizontal connecting members 211 and a plurality of longitudinal connecting members 212 . The steel plates 220 are installed on both sides of the door body 210 .

[0068] Reference below Figure 6 and Figure 7 The installation method of the emergency door device in the second embodiment of the present invention is described in detail.

[0069] refer to Figure 6 According to the second embodiment of the present invention, the installation method of the emergency door device includes but is not limited to the following steps:

[0070] Step S100, installing the support frame 300 in the main tunnel 10 so that the support frame 300 faces the branch tunnel 20 opened on the tunnel wall of the main tunnel 10;

[0071] Step S200, installing a slide rail 100 on the tunnel wall of the main tunnel 10, wherein the slide rail 100 is extended along the axial direction of the main tunnel 10 and is located on a side of the support frame 300 close to the branch tunnel 20;

[0072] Step S300 , installing the emergency door 200 on the slide rail 100 , so that the emergency door 200 can slide along the slide rail 100 .

[0073] It can be understood that when the construction workers need to close the sub-tunnel 20, the workers can push the emergency door 200 to slide along the slide rail 100 to the tunnel entrance of the sub-tunnel 20, so that the emergency door 200 separates the sub-tunnel 20 and the main tunnel 10, thereby preventing the mud in the sub-tunnel 20 from flowing into the main tunnel 10; the setting of the support frame 300, when the emergency door 200 closes the sub-tunnel 20, the support frame 300 can support the emergency door 200 to increase the strength of the emergency door 200, so that the emergency door 200 can close the sub-tunnel 20 more firmly.

[0074] In a further embodiment of the present invention, reference Figure 7 In step S100, the following steps are also included but not limited to:

[0075] Step S110, installing a plurality of longitudinal beams 310 in the main tunnel 10, and connecting the upper and lower ends of the longitudinal beams 310 to the tunnel walls of the main tunnel 10 respectively, wherein the plurality of longitudinal beams 310 are horizontally spaced and distributed in a direction away from the branch tunnel 20;

[0076] Step S120 , connecting the cross beam 320 to each longitudinal beam 310 respectively, and connecting one end of the cross beam 320 away from the branch tunnel 20 to the tunnel wall of the main tunnel 10 , so that the cross beam 320 and the longitudinal beam 310 together constitute the support frame 300 .

[0077] It can be understood that since the cross beam 320 and the longitudinal beam 310 are both connected to the tunnel wall of the main tunnel 10, the load transmitted to the support frame 300 by the emergency door 200 can be more fully transmitted to the tunnel wall of the main tunnel 10, thereby improving the firmness of the emergency door 200 closing the sub-tunnel 20.

[0078] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An emergency door device, characterized in that: Installed at the junction of the main tunnel and the branch tunnel, the emergency door device includes: A slide rail is provided on the tunnel wall of the main tunnel and extends along the axial direction of the main tunnel; an emergency door, slidably disposed on the slide rail, and under the action of an external force, the emergency door can slide along the slide rail to switch between an open state and a closed state, and when the emergency door is in the open state, the emergency door is located at one side of the tunnel entrance of the branch tunnel, and when the emergency door is in the closed state, the emergency door is located at the tunnel entrance of the branch tunnel; The support frame is arranged in the main tunnel and faces the tunnel entrance of the branch tunnel. When the emergency door is in a closed state, the support frame abuts against an end of the emergency door away from the branch tunnel.

2. An emergency door device according to claim 1, characterized in that: There are two emergency doors, which are symmetrically arranged about the tunnel entrance of the branch tunnel; there are two support frames corresponding to the emergency doors, which are respectively used to abut the two emergency doors.

3. An emergency door device according to claim 2, characterized in that: It also includes a locking assembly, and both of the two support frames are provided with a slot. The locking assembly includes a driving structure and a bolt. The driving structure is connected to the bolt, and the driving structure can drive the bolt to simultaneously pass through or detach from the slots of the two support frames.

4. An emergency door device according to claim 3, characterized in that: The driving structure includes a hand winch and a wire rope, the upper and lower ends of the wire rope are respectively connected to the door latch and the driving end of the hand winch. Under the drive of the hand winch, the wire rope can drive the door latch to perform lifting movements so that the door latch can pass through or escape from the slot.

5. The emergency door device according to claim 1, characterized in that: The support frame includes multiple longitudinal beams and at least one transverse beam. The multiple longitudinal beams are horizontally spaced apart in a direction away from the sub-tunnel. The opposite ends of the longitudinal beams are connected to the tunnel wall of the main tunnel. The transverse beams are respectively abutted against each of the longitudinal beams. The longitudinal beam closest to the sub-tunnel among the multiple longitudinal beams is used to abut against the emergency door.

6. An emergency door device according to claim 5, characterized in that: One end of the cross beam away from the branch tunnel is connected to the tunnel wall of the main tunnel.

7. An emergency door device according to claim 1, characterized in that: The emergency door is provided with a grouting hole.

8. The emergency door device according to claim 1, characterized in that: The slide rail is an angle steel, a pulley is installed on the emergency door, and the corners of the angle steel are inserted into the wheel groove of the pulley.

9. A method for installing an emergency door device, characterized in that: The following steps are included: Installing a support frame in the main tunnel so that the support frame faces the branch tunnel opened on the tunnel wall of the main tunnel; Installing a slide rail on the tunnel wall of the main tunnel, wherein the slide rail is extended along the axial direction of the main tunnel and is located on a side of the support frame close to the branch tunnel; An emergency door is installed on the slide rail so that the emergency door can slide along the slide rail.

10. The method for installing an emergency door device according to claim 9, characterized in that: The installation of the support frame in the main tunnel includes the following steps: Installing a plurality of longitudinal beams in the main tunnel, and connecting the upper and lower ends of the longitudinal beams to the tunnel walls of the main tunnel respectively, wherein the plurality of longitudinal beams are horizontally spaced and distributed in a direction away from the branch tunnel; The cross beams are connected to the longitudinal beams respectively, and one end of the cross beam away from the branch tunnel is connected to the tunnel wall of the main tunnel. The cross beams and the longitudinal beams together constitute the support frame.

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