Seepage-proof tunnel guarantee cabin sealing door

By setting up a hollow partition structure on the inner side of the door gap of the tunnel security compartment sealing door, using splicable side frames and linked drive shafts, the problem of capillary leakage in the sealing door in high-pressure environment is solved, and the waterproof effect of the sealing door is achieved. Water seepage collection function.

CN119411918APending Publication Date: 2025-02-11TAIXING HUTCHIN MFG CO LTD +3
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Patent Information

Application Number
CN202411632162.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-15
Publication Date
2025-02-11

AI Technical Summary

Technical Problem

The existing tunnel support compartment sealed doors are prone to capillary leakage under high pressure environments, which is difficult to meet the waterproofing requirements.

Method used

A partition mechanism is provided on the basis of the sealed door, and a hollow partition structure is formed on the inside of the door gap to prevent capillary water seepage. The partition mechanism consists of spliced ​​long side frames, short side frames and a linked drive shaft. The linkage mechanism realizes the linkage movement of the long side frames and short side frames, and a buffer assembly is provided on the drive shaft to stabilize sports.

Benefits of technology

Effectively prevent leakage from inside the door gap of the sealed door, realize the waterproofing requirements of the sealed door, and collect water seepage under slight penetration to enhance leakage prevention effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of tunnel guarantee cabin structures, in particular to an anti-seepage tunnel guarantee cabin sealing door which is rotationally arranged on a door frame through a rotating shaft, the front surface of the sealing door is flush with the front surface of the door frame, and a partition mechanism is arranged on the door frame and covers the front surface of the sealing door. The linkage mechanism is arranged on the door frame, and the linkage mechanism and the partition mechanism are arranged in a transmission mode. On the basis of an original sealing door, a sealing structure for covering a door slot is arranged, so that secondary sealing of the door slot is achieved through a cavity in the sealing structure, a hollow partition structure is formed on the inner side of the door slot of the sealing door, the capillary water seepage phenomenon at the door slot is prevented, and the waterproof requirement of the sealing door is met.
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Description

Technical Field

[0001] The invention relates to the technical field of tunnel support cabin structures, and in particular to a water-proof sealed door for a tunnel support cabin. Background Art

[0002] The tunnel support cabin is a facility that provides corresponding support services during tunnel construction or provides a living environment in the event of a safety accident. In view of the characteristics of tunnel construction, the waterproofness of the support cabin is a rigid requirement. The waterproof requirements of the support cabin are mainly concentrated on the anti-leakage of the cabin door. Although the waterproof cabin door structure in the existing technology is relatively advanced, it involves the surface tension and capillary phenomenon of the liquid. The sealed door with physical waterproof measures such as sealing strips will have capillary leakage under high-pressure conditions. This problem can be solved in actual solutions by adding an intermediate air barrier layer. By bulging a hollow layer in the middle section of the sealing structure to block the capillary seepage phenomenon, for this purpose, it is necessary to develop and design a specific partition structure. Summary of the invention

[0003] The purpose of the present invention is to address the defects and shortcomings of the prior art and provide a water-seepage-proof tunnel support cabin sealing door, which provides a sealing structure covering the door gap on the basis of the original sealing door, thereby achieving secondary sealing of the door gap through the cavity inside the sealing structure, thereby forming a hollow partition structure on the inner side of the door gap of the sealed door, preventing capillary water seepage at the door gap, and thus achieving the waterproof requirement of the sealed door.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: It comprises a door frame and a sealing door, wherein the sealing door is rotatably mounted on the door frame via a rotating shaft, and the front surface of the sealing door is flush with the front surface of the door frame. It also comprises: A partition mechanism, wherein the partition mechanism is arranged on the door frame and covers the front surface of the sealed door; The linkage mechanism is arranged on the door frame, and the linkage mechanism is arranged in transmission with the partition mechanism.

[0005] Preferably, the partition mechanism comprises: A bottom frame, the bottom frame being fixedly arranged on the lower side of the front surface of the door frame; A long side frame, wherein the long side frame is rotatably mounted on the left side of the front surface of the door frame via a rotating shaft; A short side frame, wherein the short side frame is rotatably mounted on the right side of the front surface of the door frame via a rotating shaft; An opening and closing limit assembly is arranged on the door frame, and the opening and closing limit assembly is arranged in cooperation with the short side frame.

[0006] Preferably, the linkage mechanism comprises: Support shafts, there are two support shafts, one of which is fixedly arranged on the upper end shaft of the long side frame, and the other is fixedly arranged on the upper end shaft of the short side frame, and the support shafts are rotatably arranged on the door frame through bearings; An active bevel gear, wherein the active bevel gear is sleeved and fixed on the supporting shaft; A transmission shaft, wherein the transmission shaft is rotatably mounted on the door frame via a bearing; Driven bevel gears, wherein there are two driven bevel gears fixedly disposed at both ends of the transmission shaft, and the driven bevel gears are meshed with the driving bevel gears; A buffer assembly is arranged in series on the transmission shaft.

[0007] Preferably, the opening and closing limit assembly comprises: An arc frame, wherein the arc frame is fixedly arranged on the door frame, and the center of the arc frame is arranged with the axis of the short side frame as the center of the circle; A limit frame, wherein the limit frame is fixedly arranged on the short side frame and movably arranged outside the arc frame; The pin rod is inserted into the limiting frame, and two groups of pin holes are opened on the arc frame, and the pin rod is inserted into one group of pin holes.

[0008] Preferably, the buffer component comprises: The installation sleeve, the transmission shaft is arranged in two sections, wherein the installation sleeve is fixedly arranged on one end of the transmission shaft away from the driven bevel gear, and the other end of the transmission shaft away from the driven bevel gear is inserted into the installation sleeve through a bearing rotation connection; A slider, wherein the slider is fixedly arranged on the side wall of a transmission shaft inserted in the mounting sleeve, the mounting sleeve is provided with a waist-shaped hole, and the slider is slidably arranged in the waist-shaped hole; The torsion spring is sleeved on a section of the transmission shaft inserted in the mounting sleeve, wherein one column foot of the torsion spring is fixedly arranged on the slider, and the other column foot of the torsion spring is fixedly arranged on the inner wall of the mounting sleeve.

[0009] Preferably, a cover shell is fixedly provided on the movable end of the long side frame, and the cover shell is covered on the movable end of the short side frame. A locking assembly is provided on the short side frame, and the locking assembly is matched with the long side frame.

[0010] Preferably, the locking assembly comprises: An arc-shaped rack, wherein the arc-shaped rack is fixedly arranged on the housing; A spur gear, wherein the spur gear is rotatably mounted on the short side frame via a rotating shaft, and the spur gear is meshed with an arc-shaped rack; A ratchet hub, wherein the ratchet hub is fixedly arranged on the short side frame, wherein one end shaft of the ratchet hub is drivingly connected to the shaft end of the spur gear; A worm wheel, the worm wheel is fixedly arranged on the other end shaft of the ratchet hub; A worm, wherein the worm is rotatably mounted on the short side frame through a bearing, and the worm is meshed with the worm wheel; A chain sprocket unit, wherein the sprocket shaft end of the chain sprocket unit is fixedly arranged on the shaft end of the worm.

[0011] Preferably, drainage holes are provided at both ends of the upper surface of the bottom frame, the lower end of the long side frame is connected to the bottom frame through the drainage hole on one side, and the lower end of the short side frame is connected to the bottom frame through the drainage hole on the other side.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This device is provided with a long side frame and a short side frame that can be spliced, so as to cover the door gap after the sealed door and the door frame are closed by splicing the bottom frame (, long side frame, and short side frame) to achieve air isolation of the door gap, thereby preventing leakage of the door gap, and in the case of slight infiltration, the seepage water can be collected to prevent leakage; 2. This device realizes the linkage movement between the long side frame and the short side frame by setting a linkage transmission shaft, and a holding structure for buffering by a torsion spring is set on the transmission shaft to realize a buffer zone for the independent movement of the long side frame and the short side frame during the transmission movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 yes Figure 1 Right front side view.

[0015] Figure 3 yes Figure 1 Left rear view.

[0016] Figure 4 It is a structural schematic diagram of opening the sealing door, the long side frame and the short side frame in the present invention.

[0017] Figure 5 It is a structural schematic diagram of the bottom frame of the present invention.

[0018] Figure 6 It is a structural schematic diagram of the long side frame of the present invention.

[0019] Figure 7 It is a structural schematic diagram of the short side frame in the present invention.

[0020] Figure 8It is a structural schematic diagram of the transmission shaft and the mounting sleeve in the present invention.

[0021] Description of reference numerals: Door frame 1, sealed door 2, partition mechanism 3, bottom frame 3-1, long side frame 3-2, short side frame 3-3, linkage mechanism 4, support shaft 4-1, active bevel gear 4-2, transmission shaft 4-3, driven bevel gear 4-4, opening and closing limit assembly 5, arc frame 5-1, limit frame 5-2, pin rod 5-3, pin hole 5-4, buffer assembly 6, mounting sleeve 6-1, slider 6-2, waist-shaped hole 6-3, torsion spring 6-4, cover shell 7, locking assembly 8, arc rack 8-1, spur gear 8-2, ratchet hub 8-3, worm wheel 8-4, worm 8-5, chain sprocket unit 8-6, drainage hole 9. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. The preferred embodiments in the description are only used as examples, and all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.

[0023] Embodiment 1:

[0024] like Figure 1-8 As shown, this embodiment comprises a door frame 1 and a sealing door 2, wherein the sealing door 2 is rotatably mounted on the door frame 1 via a rotating shaft, and the front surface of the sealing door 2 is flush with the front surface of the door frame 1, and further comprises: A partition mechanism 3, wherein the partition mechanism 3 is arranged on the door frame 1, and the partition mechanism 3 is arranged to cover the front surface of the sealed door 2; The linkage mechanism 4 is arranged on the door frame 1, and the linkage mechanism 4 is arranged in transmission with the partition mechanism 3; The partition mechanism 3 comprises: A bottom frame 3-1, wherein the bottom frame 3-1 is fixedly arranged on the lower side of the front surface of the door frame 1; A long side frame 3-2, wherein the long side frame 3-2 is rotatably mounted on the left side of the front surface of the door frame 1 via a rotating shaft; A short side frame 3-3, wherein the short side frame 3-3 is rotatably mounted on the right side of the front surface of the door frame 1 via a rotating shaft; Drain holes 9 are provided at both ends of the upper side plate of the bottom frame 3-1. The lower end of the long side frame 3-2 is connected to the bottom frame 3-1 through the drainage hole 9 on one side, and the lower end of the short side frame 3-3 is connected to the bottom frame 3-1 through the drainage hole 9 on the other side. An opening and closing limit assembly 5, wherein the opening and closing limit assembly 5 is arranged on the door frame 1, and the opening and closing limit assembly 5 is arranged in cooperation with the short side frame 3-3; The linkage mechanism 4 includes: Support shafts 4-1, there are two support shafts 4-1, one of which is fixedly arranged on the upper end shaft of the long side frame 3-2, and the other support shaft 4-1 is fixedly arranged on the upper end shaft of the short side frame 3-3, and the support shafts 4-1 are rotatably arranged on the door frame 1 through bearings; An active bevel gear 4-2, wherein the active bevel gear 4-2 is sleeved and fixed on the support shaft 4-1; A transmission shaft 4-3, wherein the transmission shaft 4-3 is rotatably mounted on the door frame 1 via a bearing; Driven bevel gear 4-4, there are two driven bevel gears 4-4 and they are fixedly arranged at both ends of the transmission shaft 4-3, and the driven bevel gear 4-4 is meshed with the driving bevel gear 4-2; A buffer assembly 6, wherein the buffer assembly 6 is arranged in series on the transmission shaft 4-3; The opening and closing limit assembly 5 comprises: The arc frame 5-1 is fixedly mounted on the door frame 1, and the center of the arc frame 5-1 is set with the axis of the short side frame 3-3 as the center; A limit frame 5-2, wherein the limit frame 5-2 is fixedly mounted on the short side frame 3-3, and the limit frame 5-2 is movably mounted outside the arc frame 5-1; The pin rod 5-3 is inserted into the limit frame 5-2. The arc frame 5-1 is provided with two groups of pin holes 5-4, and the pin rod 5-3 is inserted into one of the groups of pin holes 5-4; The buffer component 6 comprises: The installation sleeve 6-1, the transmission shaft 4-3 is arranged in two sections, wherein the installation sleeve 6-1 is fixedly arranged on one end of the transmission shaft 4-3 away from the driven bevel gear 4-4, and the other end of the transmission shaft 4-3 away from the driven bevel gear 4-4 is inserted into the installation sleeve 6-1 through a bearing rotation connection; A slider 6-2, wherein the slider 6-2 is fixedly arranged on the side wall of a section of the transmission shaft 4-3 inserted in the mounting sleeve 6-1, and a waist-shaped hole 6-3 is opened on the mounting sleeve 6-1, and the slider 6-2 is slidably arranged in the waist-shaped hole 6-3; A torsion spring 6-4, wherein the torsion spring 6-4 is sleeved on a section of the transmission shaft 4-3 inserted in the mounting sleeve 6-1, wherein one column foot of the torsion spring 6-4 is fixedly disposed on the slider 6-2, and the other column foot of the torsion spring 6-4 is fixedly disposed on the inner wall of the mounting sleeve 6-1; The cover shell 7 is fixedly arranged on the movable end of the long side frame 3-2, and the cover shell 7 is movably covered on the movable end of the short side frame 3-3; The locking assembly 8 is connected between the short side frame 3-3 and Zhao Ke through the locking assembly 8; The locking assembly 8 comprises: An arc-shaped rack 8-1, wherein the arc-shaped rack 8-1 is fixedly arranged on the housing 7; A spur gear 8-2, wherein the spur gear 8-2 is rotatably mounted on the short side frame 3-3 via a rotating shaft, and the spur gear 8-2 is meshed with the arc-shaped rack 8-1; A ratchet hub 8-3, wherein the ratchet hub 8-3 is fixedly arranged on the short side frame 3-3, wherein one end shaft of the ratchet hub 8-3 is drivingly connected to the shaft end of the spur gear 8-2; A worm wheel 8-4, wherein the worm wheel 8-4 is fixedly arranged on the other end shaft of the ratchet hub 8-3; A worm 8-5, wherein the worm 8-5 is rotatably mounted on the short side frame 3-3 via a bearing, and the worm 8-5 is meshed with the worm wheel 8-4; The chain sprocket unit 8-6, the sprocket shaft end of the chain sprocket unit 8-6 is fixedly arranged on the shaft end of the worm 8-5.

[0025] By adopting the technical solution disclosed in the present invention, it is possible to achieve: When using the device, first close and lock the sealed door 2, then push the long side frame 3-2 and the short side frame 3-3 to close and abut against the door frame 1, so that the ports of the long side frame 3-2 and the short side frame 3-3 are butted, so that the bottom frame 3-1, the long side frame 3-2, and the short side frame 3-3 cover and abut against the gap where the sealed door 2 contacts the door frame 1, thereby covering the door gap and blocking the air, achieving waterproofing of the door gap, and collecting the seepage water in the inner cavity of the bottom frame 3-1, the long side frame 3-2, and the short side frame 3-3 when the door gap leaks; Push the short side frame 3-3 to close, the short side frame 3-3 drives the support shaft 4-1 and the active bevel gear 4-2 thereon to rotate, and then the driven bevel gear 4-4 engaged drives the transmission shaft 4-3 inserted in the installation sleeve 6-1 to rotate, and then the torsion spring 6-4 supports the slider 6-2 and the installation sleeve 6-1 to drive the installation sleeve 6-1 to rotate, so that the installation sleeve 6-1 drives the transmission shaft 4-3 fixed on the installation sleeve 6-1 to rotate, thereby driving The long side frame 3-2 rotates to close; after the short side frame 3-3 completely abuts against the door frame 1, the long side frame 3-2 rotates to form a certain angle with the door frame 1, and the limiting frame 5-2 on the short side frame 3-3 rotates to align with the pin hole 5-4 on the closed side of the arc frame 5-1. At this time, the pin rod 5-3 is inserted through the limiting frame 5-2 into the pin hole 5-4, thus completing the locking of the short side frame 3-3, and then the long side frame 3-2 is pushed to continue to rotate in the closing direction, so that the long side frame The cover 7 is driven by the chain sprocket unit 8-6 to rotate, and the arc-shaped rack 8-1 on the cover 7 is driven to mesh with the spur gear 8-2, and the spur gear 8-2 is locked in one direction by the ratchet hub 8-3, so that the spur gear 8-2 can rotate freely in one direction only when the long side frame 3-2 is pushed to close, and the long side frame 3-2 cannot be directly opened, and when the long side frame 3-2 is closed, the worm 8-5 is driven to rotate forwardly by the chain sprocket unit 8-6, and then the worm engaged with the worm 8-5 is locked. The wheel 8-4 drives the ratchet hub 8-3 to rotate forwardly to push the spur gear 8-2 to rotate, and then actively pushes the spur gear 8-2 to rotate to drive the arc rack 8-1 to move, and actively pushes the long side frame 3-2 to rotate and close against the door frame 1. When the arc rack 8-1 on the long side frame 3-2 presses against the spur gear 8-2 and closes, the long side frame 3-2 only drives the installation sleeve 6-1 to rotate, so that the slider 6-2 slides in the waist-shaped hole 6-3 and tightens the torsion spring 6-4. When opening the long side frame 3-2 and the short side frame 3-3, firstly, the chain sprocket unit 8-6 is driven in reverse to drive the pawl of the ratchet hub 8-3 to rotate in the opposite direction. At this time, the torsion spring 6-4 is reset to push the long side frame 3-2 to open until the arc-shaped rack 8-1 is disengaged from the spur gear 8-2, and then the pin rod 5-3 is pulled out and the short side frame 3-3 is opened, thereby realizing the simultaneous opening of the long side frame 3-2 and the short side frame 3-3.

[0026] The technical advantages that can be achieved by adopting the above technical solution are as follows: 1. The device is provided with a long side frame 3-2 and a short side frame 3-3 that can be spliced, so that the bottom frame 3-1, the long side frame 3-2, and the short side frame 3-3 can be spliced ​​and the sealed door 2 and the door frame can be covered after the door gap is closed, so as to isolate the air from the door gap, thereby preventing leakage from the door gap, and can also collect the seepage water to prevent leakage in the case of slight infiltration; 2. This device realizes the linkage movement between the long side frame 3-2 and the short side frame 3-3 by setting a linkage transmission shaft 4-3, and a holding structure for buffering by a torsion spring 6-4 is set on the transmission shaft 4-3 to realize a buffer zone for the independent movement of the long side frame 3-2 and the short side frame 3-3 during the transmission movement.

[0027] For those skilled in the art, they can modify the technical solutions described in the aforementioned embodiments and make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water-seepage-proof sealed door for a tunnel support cabin, comprising a door frame (1) and a sealed door (2), wherein the sealed door (2) is rotatably mounted on the door frame (1) via a rotating shaft, and the front surface of the sealed door (2) is flush with the front surface of the door frame (1); characterized in that: It also contains: A partition mechanism (3), wherein the partition mechanism (3) is arranged on the door frame (1), and the partition mechanism (3) is arranged to cover the front surface of the sealed door (2); A linkage mechanism (4), wherein the linkage mechanism (4) is arranged on the door frame (1), and the linkage mechanism (4) is arranged in a transmission manner with the partition mechanism (3).

2. The water-proof tunnel security cabin sealing door according to claim 1, characterized in that: The partition mechanism (3) comprises: A bottom frame (3-1), the bottom frame (3-1) being fixedly arranged on the lower edge of the front surface of the door frame (1); A long side frame (3-2), wherein the long side frame (3-2) is rotatably mounted on the left side of the front surface of the door frame (1) via a rotating shaft; A short side frame (3-3), wherein the short side frame (3-3) is rotatably mounted on the right side of the front surface of the door frame (1) via a rotating shaft; An opening and closing limit assembly (5), wherein the opening and closing limit assembly (5) is arranged on the door frame (1), and the opening and closing limit assembly (5) is arranged in cooperation with the short side frame (3-3).

3. The waterproof tunnel security cabin sealing door according to claim 2, characterized in that: The linkage mechanism (4) comprises: Support shafts (4-1), there are two support shafts (4-1), one of which is fixedly arranged on the upper end shaft of the long side frame (3-2), and the other of which is fixedly arranged on the upper end shaft of the short side frame (3-3), and the support shafts (4-1) are rotatably arranged on the door frame (1) via bearings; An active bevel gear (4-2), wherein the active bevel gear (4-2) is sleeved and fixed on the support shaft (4-1); A transmission shaft (4-3), wherein the transmission shaft (4-3) is rotatably mounted on the door frame (1) via a bearing; A driven bevel gear (4-4), wherein the driven bevel gear (4-4) is two and is respectively fixedly arranged at the two ends of the transmission shaft (4-3), and the driven bevel gear (4-4) is meshed with the driving bevel gear (4-2); A buffer assembly (6), wherein the buffer assembly (6) is arranged in series on the transmission shaft (4-3).

4. The waterproof tunnel support cabin sealing door according to claim 3, characterized in that: The opening and closing limit assembly (5) comprises: An arc frame (5-1), wherein the arc frame (5-1) is fixedly arranged on the door frame (1), and the center of the arc frame (5-1) is arranged with the axis of the short side frame (3-3) as the center of the circle; A limiting frame (5-2), wherein the limiting frame (5-2) is fixedly arranged on the short side frame (3-3), and the limiting frame (5-2) is movably arranged outside the arc frame (5-1); A pin rod (5-3) is inserted into the limiting frame (5-2); two groups of pin holes (5-4) are provided on the arc frame (5-1); the pin rod (5-3) is inserted into one of the groups of pin holes (5-4).

5. The water-proof tunnel support cabin sealing door according to claim 4, characterized in that: The buffer component (6) comprises: The installation sleeve (6-1) is provided in two sections, wherein the installation sleeve (6-1) is fixedly provided on one end of the transmission shaft (4-3) away from the driven bevel gear (4-4), and the other end of the transmission shaft (4-3) away from the driven bevel gear (4-4) is inserted into the installation sleeve (6-1) through a bearing rotation connection; A slider (6-2), wherein the slider (6-2) is fixedly arranged on a side wall of a section of a transmission shaft (4-3) inserted into a mounting sleeve (6-1), a waist-shaped hole (6-3) is provided on the mounting sleeve (6-1), and the slider (6-2) is slidably arranged in the waist-shaped hole (6-3); A torsion spring (6-4), wherein the torsion spring (6-4) is sleeved on a section of a transmission shaft (4-3) inserted into a mounting sleeve (6-1), wherein one column foot of the torsion spring (6-4) is fixedly mounted on a slider (6-2), and another column foot of the torsion spring (6-4) is fixedly mounted on an inner wall of the mounting sleeve (6-1).

6. The water-proof tunnel support cabin sealing door according to claim 5, characterized in that: A cover shell (7) is fixedly arranged on the movable end of the long side frame (3-2), and the cover shell (7) is arranged to cover the movable end of the short side frame (3-3). A locking assembly (8) is arranged on the short side frame (3-3), and the locking assembly (8) is arranged in coordination with the long side frame (3-2).

7. The water-proof tunnel support cabin sealing door according to claim 6, characterized in that: The locking assembly (8) comprises: An arc-shaped rack (8-1), wherein the arc-shaped rack (8-1) is fixedly arranged on the cover shell (7); A spur gear (8-2), wherein the spur gear (8-2) is rotatably mounted on the short side frame (3-3) via a rotating shaft, and the spur gear (8-2) is meshed with the arc-shaped rack (8-1); A ratchet hub (8-3), wherein the ratchet hub (8-3) is fixedly arranged on the short side frame (3-3), wherein an end shaft of the ratchet hub (8-3) is drivingly connected to the shaft end of the spur gear (8-2); A worm wheel (8-4), wherein the worm wheel (8-4) is fixedly arranged on the other end shaft of the ratchet hub (8-3); A worm (8-5), wherein the worm (8-5) is rotatably mounted on the short side frame (3-3) via a bearing, and the worm (8-5) is meshed with the worm wheel (8-4); A chain sprocket unit (8-6), wherein the sprocket shaft end of the chain sprocket unit (8-6) is fixedly arranged on the shaft end of the worm (8-5).

8. The water-proof tunnel support cabin sealing door according to claim 7, characterized in that: Drain holes (9) are provided at both ends of the upper surface of the bottom frame (3-1); the lower end of the long side frame (3-2) is connected to the bottom frame (3-1) through the drainage hole (9) on one side, and the lower end of the short side frame (3-3) is connected to the bottom frame (3-1) through the drainage hole (9) on the other side.