A floodproof door for open sections of a subway tunnel and its control method

Abstract

This invention discloses a flood-proof door and control method for open sections of subway tunnels, comprising a swing-type door body, a door body base, and an adjusting base. The swing-type door body is installed on the door body base and can rotate around the door body base. The adjusting base is located below the swing-type door body and is used for installation on the U-shaped groove ground of the subway entrance / exit line. A side seal is installed between the swing-type door body and the door body base, and a bottom seal is provided between the swing-type door body and the adjusting base. A channel for the track to pass through is opened at the bottom of the swing-type door body, and a track position seal is provided at the channel location. The track position seal includes a power component, a linkage transmission mechanism, and two sealing components. The power component is connected to the linkage transmission mechanism, and the linkage transmission mechanism is connected to the two sealing components. The power component can drive the linkage transmission mechanism to move, thereby causing the two sealing components to clamp and seal the track. This ensures the waterproof sealing performance of the flood-proof door, effectively preventing floodwater from entering the subway entrance / exit line through the flood-proof door.

Description

Technical Field

[0001] This invention relates to the field of urban rail transit engineering technology, and in particular to a flood prevention door for open sections of subway tunnels and its control method. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] Subways are typically located underground, forming a relatively enclosed space characterized by secrecy, isolation, and a high density of people and equipment, making evacuation and rescue difficult. Subways are primarily connected to the outside world through ventilation shafts, entrances / exits, and tunnel openings. Therefore, during urban flooding, floodwaters will preferentially enter the subway system and rapidly spread throughout the entire connected area.

[0004] To prevent rainwater backflow, subway access lines, i.e. the transition section from underground to above ground, generally adopt the form of a U-shaped channel connecting the tunnel entrance. From the tunnel entrance until the rails are completely exposed above ground, the track bed and rails are laid on a U-shaped channel. The two sides of the U-shaped channel are reinforced concrete flood-proof walls. No matter how the slope of the line changes, the flood-proof walls are always more than 1 meter higher than the outside ground.

[0005] Currently, the common practice is to install floodgates at the U-shaped openings to further prevent floodwater from flowing back into the subway entrance / exit lines. However, the existing floodgates are not properly sealed to the tracks, which limits their waterproofing effect. Floodwater can still enter the subway entrance / exit lines through the gaps between the floodgates and the tracks. Summary of the Invention

[0006] To address the aforementioned problems, this invention proposes a flood-proof door for open sections of subway tunnels and its control method. In addition to a swing-type door body and a door body base, an adjustment base, a bottom sealing element, a door seam sealing element, a side sealing element, and a track position seal are also provided to ensure the waterproof sealing performance of the flood-proof door, thereby effectively preventing floodwater from entering the subway entrance / exit (section) line through the flood-proof door.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] Firstly, a flood-proof gate for open sections of subway tunnels is proposed, comprising a swing gate body, a gate base, and an adjusting base. The swing gate body is installed on the gate base and can rotate around the gate base. The adjusting base is located below the swing gate body and is used for installation on the U-shaped groove ground of the subway entrance / exit line. A side seal is installed between the swing gate body and the gate base, and a bottom seal is installed between the swing gate body and the adjusting base. A channel for the track to pass through is opened at the bottom of the swing gate body, and a track position seal is installed at the channel position. The track position seal includes a power component, a linkage transmission mechanism, and two sealing components. The power component is connected to the linkage transmission mechanism, and the linkage transmission mechanism is connected to the two sealing components. The power component can drive the linkage transmission mechanism to move, thereby causing the two sealing components to clamp and seal the track.

[0009] Furthermore, the swing door includes door body A and door body B, both of which are installed on a door body base and can rotate around the door body base. A door gap seal is provided between door body A and door body B.

[0010] Furthermore, door A and door B are provided with a bolt locking mechanism. The bolt locking mechanism includes a bolt and a insertion part. The bolt is located on one of the door bodies, and the insertion part is located on the other door body. The bolt can be inserted into the insertion part to lock door A and door B.

[0011] Furthermore, the swing door includes a door frame and a door panel. The door frame is connected to the door base and can rotate around the door base. The door panel is connected to the door frame through a door lifting mechanism.

[0012] Furthermore, a magnetic switch is installed on the swing door, and a door stop that cooperates with the magnetic switch is set on the side wall of the U-shaped groove.

[0013] Furthermore, the lower part of the swing door has multiple passages for tracks to pass through, with each passage allowing only one track to pass through.

[0014] Furthermore, the power component includes a linkage drive motor, a power rod, and a drive connector. The output shaft of the drive motor is connected to the power rod, and the power rod is hinged to the drive connector. The linkage transmission mechanism includes a first link, a second link, and an intermediate link. The first end of the first link and the first end of the second link are respectively hinged to the drive connector. The second end of the first link and the second end of the second link are respectively connected to a sealing component. The two ends of the intermediate link are respectively hinged to the first link and the second link.

[0015] Furthermore, two sealing components are located on both sides of the track. Each sealing component includes a fixing block, a guide rail, a slide groove, and a sealing head. The sealing head is provided with a track groove that is compatible with the track. A sealing gasket is provided in the track groove. The sealing head is fixedly connected to the fixing block. The fixing block is hinged to the first or second connecting rod. The fixing block is connected to the guide rail. The guide rail is slidably connected to the slide groove and can move along the slide groove. The slide groove is fixed to the swing door body.

[0016] Furthermore, it also includes water level detectors, station monitoring equipment, on-site monitoring equipment, and central monitoring equipment;

[0017] A water level detector is used to obtain water level information at the inlet and outlet of the U-shaped channel;

[0018] The on-site monitoring equipment is used to control the opening and closing of the swing gate and the opening and closing of the track position seal based on the water level information at the inlet and outlet of the U-shaped channel.

[0019] The station monitoring equipment is used to receive and display water level information at the entrance and exit of the U-shaped channel, status information of the swing gate, and status information of the track position seal, and upload them to the central monitoring equipment;

[0020] The central monitoring equipment is used to centrally display water level information, swing gate status information, and track sealing status information at all U-shaped channel inlets and outlets.

[0021] Secondly, a flood control method for open sections of subway tunnels is proposed, including:

[0022] When flood prevention measures are required for the open section of the subway tunnel, the swing door is closed, and the power component drives the linkage transmission mechanism to move, which in turn drives the two sealing components to clamp and seal the track.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. In addition to the hinged door body and door body base, this invention also includes an adjustment base, a bottom sealing component, a door gap sealing component, a side sealing component, and a track position seal, which ensures the waterproof sealing performance of the floodproof door and effectively prevents floodwater from entering the subway entrance / exit (section) line through the floodproof door.

[0025] 2. The present invention also includes a water level detector for obtaining water level information at the inlet and outlet of the U-shaped channel. The on-site monitoring equipment can control the sealing of the swing gate and track position based on the water level information obtained by the water level detector at the inlet and outlet of the U-shaped channel, thereby effectively and timely blocking floods outside the floodproof gate.

[0026] 3. The swing door body set in this invention, in addition to being able to open and close horizontally, also has a vertically lifting door panel. During the opening and closing process of the swing door body, the door panel is raised to the highest position to prevent collision with the track, third track and other facilities, and to ensure the normal operation of the swing door body when opening and closing.

[0027] 4. In order to improve the strength of the swing door, the present invention sets the swing door as a structure including A and door body B, and sets a door gap seal and a pin locking mechanism between A and door body B. The door gap seal seals the space between A and door body B, and the pin locking mechanism locks A and door body B, thereby further ensuring the airtightness between A and door body B.

[0028] 5. This invention features a track position seal. A power component drives a linkage transmission mechanism to move, which in turn controls the movement of two sealing components to clamp and seal the track. Since the two sealing components are controlled to move simultaneously by the linkage transmission mechanism, the sealing control on both sides of the track is synchronized, ensuring the effectiveness of the track sealing and improving control efficiency.

[0029] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0031] Figure 1 This is a schematic diagram of the overall structure of the floodproof door as shown in Example 1;

[0032] Figure 2 This is a schematic diagram of the flood-proof door structure disclosed in Example 1;

[0033] Figure 3 The diagram below shows the initial position locking mechanism of the floodgate as disclosed in Example 1.

[0034] Figure 4 This is a schematic diagram of the track sealing structure of the floodproof door as disclosed in Example 1;

[0035] Figure 5 This is a schematic diagram of the bolt locking mechanism of the floodproof door as disclosed in Example 1;

[0036] Figure 6 This is a schematic diagram of the door gap seal and the bottom seal of the floodproof door disclosed in Example 1;

[0037] Figure 7 This is a schematic diagram of the sealing gasket for a floodproof door as disclosed in Example 1;

[0038] Figure 8 The diagram below shows the side seal of the floodproof door as disclosed in Example 1.

[0039] The components are as follows: 1. Door base, 2. Adjustment base, 3. Hinged door, 4. Track, 5. Field line entrance / exit foundation, 6. Door A, 7. Door B, 8. Door lifting mechanism, 9. Initial position locking mechanism, 10. Linkage drive motor, 11. Power rod, 12. Drive connector, 13. First link, 14. Fixing block, 15. Intermediate link, 16. Second link, 17. Guide rail, 18. Slide groove, 19. Pin, 20. Insertion part, 21. Door seam seal, 22. Door bottom seal, 23. Door side seal, 24. Sealing gasket, 25. Sealing head. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0041] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] In this invention, terms such as "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "side," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only to facilitate the description of the structural relationships of the various components or elements of this invention and do not specifically refer to any component or element in this invention. They should not be construed as limiting the invention.

[0044] In this invention, terms such as "fixed connection," "connected," and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this invention based on the specific circumstances, and they should not be construed as limitations on the invention.

[0045] Example 1

[0046] In this embodiment, a flood-proof door for the open section of a subway tunnel is disclosed, such as... Figure 1-8 As shown, it includes a swing door body 3, a door body base 1, and an adjustment base 2.

[0047] Among them, the gate base 1 is installed with the reserved embedded iron of the entrance and exit lines or fixed with chemical anchors.

[0048] The swing door 3 is installed on the door base 1 and can rotate around the door base 1 to realize the swing door 3 opening and closing.

[0049] An adjustment base 2 is provided below the swing door 3. After the swing door 3 is closed, the lower end face is located above the adjustment base 2.

[0050] The adjustment base 2 is installed on the ground of the U-shaped groove of the subway entrance / exit line, and has a connection interface with the track 4, which does not affect the operation of the track 4 and the vehicle. The main function of the adjustment base 2 is to connect with the swing gate 3 to ensure seamless contact between the swing gate 3 and the adjustment base 2 when the swing gate 3 is closed, thus ensuring the amount of water leakage is blocked.

[0051] The swing door 3 includes a door frame and a door panel. The door frame is connected to the door base 1 and can rotate around the door base 1. The door panel is connected to the door frame through the door lifting mechanism 8, which drives the door panel to move up and down along the door frame.

[0052] The lower part of the swing door 3 has multiple channels for the tracks 4 to pass through. Each channel corresponds to each track 4, and each channel is only for one track to pass through.

[0053] The door frame and the door base 1 are connected by a door hinge mechanism. The door hinge mechanism is controlled by a servo motor to realize the opening and closing of the swing door 3. Normally, the swing door 3 is in the open state and the swing door 3 is parallel to the two side walls of the U-shaped groove.

[0054] An initial position locking mechanism 9 is installed between the swing door 3 and the two side walls of the U-shaped channel. The initial position locking mechanism 9 includes a magnetic switch and a door stop. The magnetic switch is installed on the swing door 3, and the door stop is installed on the two side walls of the U-shaped channel. When the swing door 3 is opened, the magnetic switch on the swing door 3 and the door stop pre-installed on the wall are used to protect the swing door 3 in the open state.

[0055] The door lifting mechanism 8 includes a slide rail and a slider. The slider is slidably connected to the slide rail, the slide rail is connected to the door frame, and the slider is connected to the door body. The slider is driven by a lifting motor and moves up and down along the slide rail to adjust the relative position of the door body and the door frame.

[0056] When the swing door 3 needs to be closed, the magnetic switch is opened, and the door hinge mechanism rotates 90 degrees under the drive of the servo motor to close.

[0057] The door lifting mechanism 8 includes a slide rail and a slider. The slider is slidably connected to the slide rail, the slide rail is connected to the door frame, and the slider is connected to the door body. The slider is driven by a lifting motor and moves up and down along the slide rail to adjust the relative position of the door body and the door frame.

[0058] When the swing door 3 is in the open state, the door is at its highest position. When the swing door 3 is closing, it can effectively prevent the swing door 3 from colliding with the track, third track and other facilities.

[0059] When the swing door 3 needs to be closed, the magnetic switch opens, and the door hinge mechanism rotates 90 degrees under the drive of the servo motor to close. After the swing door 3 is closed, the door lifting mechanism 8 lowers the door panel until it is flush with the adjusting base 2. At this point, the passage for the track 4 also aligns with the track 4, thus achieving the purpose of sealing the entire U-shaped cross-section. The door lifting mechanism 8 not only prevents the swing door 3 from colliding with the track and third track, but also allows for position adjustment of the door panel, ensuring a tight seal between the door panel and the adjusting base 2, and between the door panel and the track 4.

[0060] To improve the overall strength of the swing door 3, the swing door 3 is configured to include door body A6 and door body B7, which can be opened and closed in a swing manner. Door body A6 and door body A7 are both installed on the door body base 1 and can rotate around the door body base 1. Door body A6 and door body A7 have the same structure, both including a main door frame and a main door panel. The main door frame is connected to the door body base 1 through a door hinge mechanism, and the main door panel is connected to the main door frame through a door lifting mechanism 8, and moves up and down along the main door frame under the drive of the door lifting mechanism 8.

[0061] To ensure good waterproof performance when the swing door 3 is closed, a side seal 23 is installed between the swing door 3 and the door base 1, a bottom seal 22 is installed between the lower part of the swing door 3 and the adjustment base 2, a door gap seal 21 is installed between door A6 and door A7, a track position seal is installed at the passage through which the track 4 passes, and a pin locking mechanism is installed between door A6 and door A7. The pin locking mechanism includes a pin 19 and a insertion part 20. The pin 19 is located on one door and the insertion part 20 is located on the other door, and the pin 19 can be inserted into the insertion part 20 to lock door A and door B.

[0062] The pin locking mechanism adopts a motor-driven pin design, which drives the movement of pin 19 via a motor.

[0063] The track position seal includes a power component, a linkage transmission mechanism, and two sealing components. The power component includes a linkage drive motor 10, a reciprocating motion mechanism 10, and a drive connector 12. The output shaft of the drive motor 10 is connected to the reciprocating motion mechanism 10, driving the reciprocating motion mechanism 10 to perform reciprocating motion. The reciprocating motion mechanism 10 is hinged to the drive connector 12. The linkage transmission mechanism includes a first link 13, a second link 16, and an intermediate link 15. The first end of the first link 13 and the first end of the second link 16 are respectively hinged to the drive connector 12. The second end of the first link 13 and the second end of the second link 16 are respectively connected to the sealing components. The two ends of the intermediate link 15 are respectively hinged to the first link 13 and the second link 16.

[0064] Two sealing components are located on both sides of the track. Each sealing component includes a fixing block 14, a guide rail 17, a slide groove 18, and a sealing head 25. The sealing head 25 is provided with a track groove that is adapted to the track. A sealing gasket 24 is provided in the track groove. The sealing head 25 is fixedly connected to the fixing block 14. The fixing block 14 is hinged to the first connecting rod 13 or the second connecting rod 16. The guide rail 17 is connected to the fixing block 14. The guide rail 17 is slidably connected to the slide groove 18 and can move along the slide groove 18. The slide groove 18 is fixed to the swing door body 3.

[0065] When the drive motor 10 drives the reciprocating motion mechanism 10 to reciprocate, the reciprocating motion mechanism 10 drives the connecting piece 12 to move, which in turn drives the first connecting rod 13 and the second connecting rod 16 to move. The movement of the first connecting rod 13 and the second connecting rod 16 drives the fixed block 14 to move, thereby clamping and sealing the track through the two sealing heads 25, or loosening the track. The sealing gasket 24 is set in the track groove to further ensure the sealing performance when the two sealing heads 25 clamp and seal the track. The guide rail 17 and the slide groove 18 provide guidance for the movement of the fixed block 14.

[0066] The reciprocating motion mechanism 10 includes a screw, a nut, and a reciprocating motor. The nut is sleeved on the screw and meshes with it. The nut is connected to the output shaft of the reciprocating motor. When the output shaft of the reciprocating motor rotates, it drives the nut to rotate, thereby driving the screw to perform reciprocating motion.

[0067] When the swing door 3 is closed, the side seal 23 of the door body is sealed by the squeezing of the swing door 3 and the door base 1, the door gap seal 21 is sealed by the squeezing of the door body A6 and the door body A7, the bottom seal 22 of the door body is sealed by the squeezing of the swing door 3 and the adjusting base 2, the swing door 3 is sealed with the track by the track position seal, and the pin locking mechanism at the door body A6 and the door body A7 is locked, thereby achieving the locking of the door body A6 and the door body A7 and increasing the strength to withstand hydrostatic pressure.

[0068] Among them, the door side seal 23, door gap seal 21, door bottom seal 22 and sealing gasket 24 all use rubber sealing strips to ensure sealing performance.

[0069] The hinged door body 3, the adjustment base 2, and the door body base 1 are all made of high-quality carbon steel and treated with anti-rust and anti-corrosion measures. The outer panel is made of stainless steel.

[0070] To ensure the timely closure of the swing gate 3 and effectively prevent floodwater from entering the subway entrance / exit (section) line through the floodproof gate, water level detectors, station monitoring equipment, on-site monitoring equipment, and central monitoring equipment are also installed.

[0071] A water level detector is used to obtain water level information at the inlet and outlet of the U-shaped channel.

[0072] The on-site monitoring equipment is used to control the opening and closing of the swing gate and the opening and closing of the track position seal based on the water level information at the inlet and outlet of the U-shaped channel.

[0073] The station monitoring equipment is used to receive and display water level information at the entrance and exit of the U-shaped channel, status information of the swing gate, and status information of the track position seal, and upload them to the central monitoring equipment.

[0074] The central monitoring equipment is used to centrally display water level information, swing gate status information, and track sealing status information at all U-shaped channel inlets and outlets.

[0075] In addition, this embodiment also includes control buttons, indicator lights, sirens, and alarm bells. These are all connected to on-site monitoring equipment. The control buttons allow the swing gate 3 to be opened and closed. When the water level at the U-shaped channel inlet / outlet exceeds the warning line, an alarm is triggered via indicator lights, sirens, and alarm bells.

[0076] The working process of a floodproof door for an open section of a subway tunnel disclosed in this embodiment is as follows:

[0077] In normal operation: the swing gate is open. When the water level at the inlet and outlet of the U-shaped channel exceeds the warning line, the on-site monitoring equipment controls the door frame of the swing gate to rotate around the gate base until the swing gate is closed. The control pin locking mechanism locks the two gates together. The control door lifting mechanism lowers the gate until the swing gate is in contact with the adjustment base and track. The control track position seal clamps and seals the track, completing the closing of the swing gate.

[0078] Once the water level returns to below the warning line, the control track position seal is released, and the control gate lifting mechanism raises the gate a set distance to release floodwater. Afterward, the control gate lifting mechanism raises the gate to its highest position, the control pin locking mechanism unlocks, and the control door frame of the swing gate rotates around the gate base, causing the swing gate to open. The initial position locking mechanism then locks the swing gate.

[0079] The flood-proof door disclosed in this embodiment, in addition to a swing-type door body and a door body base, also includes an adjusting base, a bottom sealing element, a door seam sealing element, a side sealing element, and a track position seal, ensuring the waterproof sealing performance of the flood-proof door and effectively preventing floodwater from entering the subway entrance / exit (section) line through the flood-proof door. It also includes a water level detector for acquiring water level information at the U-shaped channel entrance / exit. On-site monitoring equipment can control the swing-type door body and track position seal based on the water level information acquired by the water level detector at the U-shaped channel entrance / exit, thereby effectively and promptly blocking floodwater outside the flood-proof door. The swing-type door body, in addition to its swing-opening and closing capability, also includes a vertically lifting door panel. During the opening and closing process of the swing-type door body, when the door panel rises to its highest position, it prevents flooding. To prevent collisions with tracks, third rails, and other facilities, ensuring the normal opening and closing of the swing door; to improve the strength of the swing door, the swing door is designed as a structure including A and door body B, with a door gap seal and a pin locking mechanism installed between A and door body B. The door gap seal seals between A and door body B, and the pin locking mechanism locks A and door body B, further ensuring the sealing performance between A and door body B; a track position seal is also provided, driven by a power component to move a linkage transmission mechanism, which controls the action of two sealing components to clamp and seal the track. Since the two sealing components are controlled to act simultaneously by the linkage transmission mechanism, the sealing control on both sides of the track is synchronized, ensuring the effectiveness of the track sealing and improving control efficiency.

[0080] Example 2

[0081] In this embodiment, a method for flood prevention and control in open sections of subway tunnels is disclosed, including:

[0082] When flood prevention measures are required for the open section of the subway tunnel, the swing door is closed, and the power component drives the linkage transmission mechanism to move, which in turn drives the two sealing components to clamp and seal the track.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A flood-proof door for open sections of subway tunnels, characterized in that, The system includes a swing gate, a gate base, and an adjustment base. The swing gate is mounted on the gate base and can rotate around it. The adjustment base is located below the swing gate and is used for installation on the U-shaped groove floor of the subway entrance / exit line. A side seal is installed between the swing gate and the gate base, and a bottom seal is installed between the swing gate and the adjustment base. A channel for the track to pass through is opened at the bottom of the swing gate, and a track position seal is installed at the channel location. The track position seal includes a power component, a linkage mechanism, and two sealing components. The power component is connected to the linkage mechanism, and the linkage mechanism is connected to the two sealing components. The power component can drive the linkage mechanism to move, thereby causing the two sealing components to clamp and seal the track. Two sealing components are located on both sides of the track. The sealing components include a fixing block, a guide rail, a slide groove, and a sealing head. The swing door includes door body A and door body B. Both door body A and door body B are installed on the door body base and can rotate around the door body base. A door gap seal and a pin locking mechanism are provided between door body A and door body B. The door gap seal seals the space between A and door body B, and the pin locking mechanism locks door body A and door body B together, further ensuring the airtightness between A and door body B. A swing door includes a door frame and a door panel. The door frame is connected to the door base and can rotate around the door base. The door panel is connected to the door frame through a door lifting mechanism. The power components include a linkage drive motor, a reciprocating motion mechanism, and a drive connector. The output shaft of the drive motor is connected to the reciprocating motion mechanism, driving the reciprocating motion mechanism to perform reciprocating motion. The reciprocating motion mechanism is hinged to the drive connector. The linkage transmission mechanism includes a first link, a second link, and an intermediate link. The first end of the first link and the first end of the second link are respectively hinged to the drive connector. The second end of the first link and the second end of the second link are respectively connected to a sealing component. The two ends of the intermediate link are respectively hinged to the first link and the second link. The sealing head is provided with a track groove adapted to the track, and a sealing gasket is provided in the track groove. The sealing head is fixedly connected to the fixing block, the fixing block is hinged to the first link or the second link, the guide rail is connected to the fixing block, the guide rail is slidably connected to the slide groove, and can move along the slide groove. The slide groove is fixed to the swing door body.

2. A flood-proof door for open sections of a subway tunnel as described in claim 1, characterized in that, The latch locking mechanism includes a latch and a insertion part. The latch is located on one door body, and the insertion part is located on the other door body. The latch can be inserted into the insertion part to lock door body A and door body B.

3. A flood-proof door for open sections of a subway tunnel as described in claim 1, characterized in that, A magnetic switch is installed on the swing door, and a door stop that works with the magnetic switch is set on the side wall of the U-shaped groove.

4. A flood-proof door for open sections of a subway tunnel as described in claim 1, characterized in that, The lower part of the swing door has multiple passages for tracks to pass through, with each passage allowing only one track to pass through.

5. A flood-proof door for open sections of a subway tunnel as described in claim 1, characterized in that, It also includes water level detectors, station monitoring equipment, on-site monitoring equipment, and central monitoring equipment; A water level detector is used to obtain water level information at the inlet and outlet of the U-shaped channel; The on-site monitoring equipment is used to control the opening and closing of the swing gate and the opening and closing of the track position seal based on the water level information at the inlet and outlet of the U-shaped channel. The station monitoring equipment is used to receive and display water level information at the entrance and exit of the U-shaped channel, status information of the swing gate, and status information of the track position seal, and upload them to the central monitoring equipment; The central monitoring equipment is used to centrally display water level information, swing gate status information, and track sealing status information at all U-shaped channel inlets and outlets.

6. A control method for flood-proof doors in open sections of subway tunnels as described in any one of claims 1-5, characterized in that, include: When flood prevention measures are required for the open section of the subway tunnel, the swing door is closed, and the power component drives the linkage transmission mechanism to move, which in turn drives the two sealing components to clamp and seal the track.

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