Rail transit flood prevention device and control method

Abstract

The invention discloses a rail transit flood prevention device, which comprises a fixed frame, a movable frame, a first support, a second support and a third support, the fixed frame is arranged at a foundation pit, and the fixed frame comprises a first dovetail table and a second dovetail table; a chute; the lifting door body comprises a first lifting door body face and a second lifting door body face, and the first lifting door body face is matched with the first dovetail table to stop water; the lifting driving mechanism is arranged in the lifting door body; the lifting transmission mechanism is connected with the lifting driving mechanism, the lifting transmission mechanism comprises a lifting transmission shaft and a lifting lead screw, and the lifting lead screw controls the lifting door body to ascend and descend through the lifting driving mechanism; the first locking and sealing mechanism pushes the sliding groove to lock the first face of the lifting door body and the sliding groove. And the second locking and sealing mechanism is used for locking the first surface of the lifting door body and the first dovetail table.

Description

Technical Field

[0001] The invention belongs to the field of rail transit, and in particular relates to a rail transit flood prevention device. Background Art

[0002] In recent years, there have been many flood prevention problems in operating lines across the country. The main reason is that most cities still use the traditional flood prevention gate plus sandbags for defense. This method has the disadvantages of slow response speed, slow defense speed, poor effect, and high sandbag reserve requirements in the event of flood disasters. If the subway entrances and exits are not defended in time, water is likely to enter the entrances and exits, causing major property losses to the subway's internal facilities and great social impact.

[0003] Chinese patent CN111058730A discloses a subway flood prevention door and a control method thereof, comprising a frame, a door body, a driving mechanism and a clamping mechanism, wherein the frame is arranged in a foundation, the door body is slidably connected in the frame, and a sealing member is arranged between the door body and the frame, the frame and the door body are respectively connected to the driving mechanism, the driving mechanism is arranged to drive the door body to move along the frame to realize opening and closing of the door body, the frame and the door body are respectively connected to the clamping mechanism, and the clamping mechanism is arranged to drive the door body to seal with the frame.

[0004] Although the invention can achieve sealing between the door body and the frame, the clamping mechanism and the door body are in point contact, and the sealing effect is not ideal. In addition, depending on the length of the frame, multiple clamping mechanisms need to be set, and the unreasonable setting of the driving structure is not conducive to maintenance when the equipment is damaged. Summary of the invention

[0005] In order to solve the above problems, the purpose of this application is to provide a rail transit flood prevention device with good sealing performance.

[0006] The present application provides a rail transit flood prevention device, including:

[0007] A fixed frame, the fixed frame is arranged at the foundation pit, and the fixed frame comprises a first dovetail platform and a second dovetail platform;

[0008] A slide groove, wherein the slide groove is arranged on both sides of the fixed frame;

[0009] A lifting door body, wherein the lifting door slides up and down in the fixed frame through the sliding groove, the lifting door body comprises a first lifting door body surface and a second lifting door body surface, and the first lifting door body surface cooperates with the first dovetail platform to block water;

[0010] A lifting drive mechanism, wherein the lifting drive mechanism is arranged in the lifting door body;

[0011] A lifting transmission mechanism, the lifting transmission mechanism is connected to the lifting drive mechanism, the lifting transmission mechanism comprises a lifting transmission shaft and a lifting screw, the lifting screw is arranged at the bottom of the fixed frame, and the lifting screw controls the lifting of the lifting door body through the lifting drive mechanism;

[0012] a first locking and sealing mechanism, wherein the first locking and sealing mechanism pushes the slide groove to lock the first surface of the lifting door body with the slide groove;

[0013] A second locking and sealing mechanism is used to lock the first surface of the lifting door body with the first dovetail platform.

[0014] Furthermore, in the rail transit flood prevention device, the first locking and sealing mechanism comprises:

[0015] A first locking motor, wherein the first locking motor is disposed in the lifting door body, and the first locking motor is automatically controlled and manually controlled in one.

[0016] a first locking transmission shaft, wherein the first locking transmission rod is connected to the first locking motor;

[0017] a first locking transmission rod, the first locking transmission rod being connected to the first locking transmission shaft, and the first locking transmission rod being arranged on both sides of the lifting door body;

[0018] An eccentric shaft sliding wheel, wherein the eccentric sliding wheel is connected to the first locking transmission rod, and the first locking transmission rod drives the eccentric sliding wheel to change the axis position so that the first surface of the lifting door is locked with the sliding groove 20.

[0019] Furthermore, in the rail transit flood prevention device, the second locking and sealing mechanism comprises:

[0020] A second locking motor, wherein the second locking motor is arranged in the fixed frame, and the second locking motor is automatically controlled and manually controlled in one.

[0021] a second locking transmission member, the second locking transmission member being connected to the second locking motor;

[0022] A sliding locking member is connected to the second locking transmission member, and the sliding locking member is arranged below the second dovetail platform. The second locking transmission member drives the sliding locking member to move horizontally to squeeze and lock the lifting door body and the first dovetail platform.

[0023] Further, in the rail transit flood prevention device, the sliding locking member comprises:

[0024] a sliding plate connected to the second locking transmission member;

[0025] A sliding block is slidably arranged between the lifting door body and the sliding plate, and the second locking transmission member drives the sliding plate to move horizontally to squeeze the second surface of the lifting door body through the sliding block to squeeze and lock the first surface of the lifting door body and the first dovetail platform.

[0026] Furthermore, in the rail transit flood prevention device, the sliding plate is provided with a wedge-shaped protrusion, and the sliding block is provided with a groove, and the groove corresponds to the wedge-shaped protrusion.

[0027] Further, in the rail transit flood control device, the sliding plate includes a first sliding plate and a second sliding plate, the sliding block includes a first sliding block and a second sliding block, and the second locking transmission member includes:

[0028] A first swing arm, wherein the first swing arm comprises:

[0029] a first end of a first swing arm, wherein the first end of the first swing arm is connected to the second locking motor;

[0030] a first swing arm second end, wherein the first swing arm second end is connected to the first sliding plate;

[0031] The third end of the first swing arm;

[0032] A second swing arm, wherein the second swing arm comprises:

[0033] a first end of a second swing arm;

[0034] a second end of a second swing arm, wherein the second end of the second swing arm is connected to the second sliding plate;

[0035] a third end of a second swing arm, wherein the third end of the second swing arm is connected to the third end of the first swing arm;

[0036] The second locking motor drives the first swing arm and the second swing arm to make the first sliding plate and the second sliding plate move relative to each other to squeeze and lock the first surface of the lifting door body and the first dovetail platform.

[0037] Furthermore, the rail transit flood prevention device also includes a sealing strip, which is arranged on the first dovetail platform and is used for water-retaining sealing between the fixed frame and the lifting door body.

[0038] Furthermore, in the rail transit flood prevention device, the lifting drive mechanism is a motor that integrates electric control and manual control.

[0039] Furthermore, in the rail transit flood prevention device, a water pump is also provided at the bottom of the fixed frame, and the water pump is used to pump water at the bottom of the fixed frame.

[0040] The present application embodiment also provides a control method for a rail transit flood control device, using the rail transit flood control device as described above, comprising:

[0041] Get real-time water level;

[0042] The real-time water level is compared with a preset water level threshold. If the preset water level threshold is exceeded, the lifting drive mechanism, the first locking and sealing mechanism and the second locking and sealing mechanism are controlled to operate in sequence and an alarm is issued.

[0043] The technical solution provided by the embodiment of the present application has the following advantages:

[0044] 1. The first locking and sealing mechanism is adopted to enhance the vertical sealing of the lifting door body;

[0045] 2. The adoption of the second locking and sealing mechanism enhances the transverse sealing between the lifting door body and the dovetail platform;

[0046] 3. Due to the use of a motor that integrates automatic control and manual control, the lifting and lowering of the lifting door body can be controlled even when the power is off;

[0047] 4. Since the lifting drive mechanism is set inside the lifting door body, the risk of motor damage due to water accumulation is effectively avoided;

[0048] 5. Since a water pump is installed at the bottom, water accumulation at the bottom of the foundation pit can be effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A schematic diagram of a rail transit flood prevention device preferred in an embodiment of the present invention;

[0050] Figure 2 This is a schematic diagram of the installation of a rail transit flood prevention device preferred in an embodiment of the present invention;

[0051] Figure 3 A schematic diagram of a lifting drive mechanism and a lifting transmission mechanism of a rail transit flood control device preferably used in an embodiment of the present invention;

[0052] Figure 4 A schematic diagram of a preferred first locking and sealing mechanism of an embodiment of the present invention;

[0053] Figure 5 A partial schematic diagram of a first locking mechanism preferred in an embodiment of the present invention;

[0054] Figure 6 A schematic diagram of a preferred second locking and sealing mechanism according to an embodiment of the present invention;

[0055] Figure 7 A partial schematic diagram of a second locking and sealing mechanism preferred in an embodiment of the present invention;

[0056] Figure 8 This is a flow chart of a control method for a rail transit flood control device preferably used in an embodiment of the present invention.

[0057] Reference numerals

[0058] Fixed frame - 10;

[0059] Foundation pit-A;

[0060] First Dovetail Station-11;

[0061] Second dovetail station-12;

[0062] Chute - 20;

[0063] Lifting door body - 30;

[0064] First side of lifting door body - 31;

[0065] Second side of lifting door body - 32;

[0066] Seat plate - 33;

[0067] Lifting drive mechanism-40;

[0068] Lifting manual turntable shaft-41;

[0069] Lifting transmission mechanism - 50;

[0070] Lifting drive shaft-51;

[0071] Lifting screw-52;

[0072] First locking and sealing mechanism-60;

[0073] First locking motor-61;

[0074] First locking transmission shaft-62;

[0075] First locking transmission rod-63;

[0076] Eccentric shaft sliding wheel-64;

[0077] Second locking and sealing mechanism-70;

[0078] Second locking motor-71;

[0079] Second locking transmission member-72;

[0080] First swing arm - 721;

[0081] First end of first swing arm -7211;

[0082] First swing arm second end -7212;

[0083] The third end of the first swing arm - 7213;

[0084] Second swing arm - 722;

[0085] Second swing arm first end -7221;

[0086] Second end of second swing arm-7222;

[0087] The third end of the second swing arm - 7223;

[0088] Sliding lock - 73;

[0089] Sliding plate - 731;

[0090] First sliding plate - 731A;

[0091] Second sliding plate - 731B;

[0092] Wedge-shaped protrusion-7311;

[0093] Slider - 732;

[0094] First slider - 732A;

[0095] Second slider - 732B;

[0096] Groove - 7321;

[0097] Water pump - 80. DETAILED DESCRIPTION

[0098] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0099] In addition, it should be noted that, unless otherwise clearly specified and limited, the words "installed", "connected", "connected" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. Technical personnel in the field can understand their specific meanings in this application according to the specific circumstances.

[0100] Figure 1 This is a schematic diagram of a rail transit flood prevention device preferred in an embodiment of the present invention. Figure 2 This is a schematic diagram of the installation of a rail transit flood prevention device preferred in an embodiment of the present invention. Figure 1 and Figure 2 As shown, the rail transit flood control device includes a fixed frame 10, which is arranged at the foundation pit A. The fixed frame 10 includes a first dovetail platform 11 and a second dovetail platform 12, and the first dovetail platform 11 and the second dovetail platform 12 are arranged on the ground of the foundation pit. Slide grooves 20 are arranged on both sides of the fixed frame 10. The lifting door body 30 slides up and down in the fixed frame 10 through the slide grooves 20. The lifting door body 30 includes a first surface 31 of the lifting door body and a second surface 32 of the lifting door body, and the first surface 31 of the lifting door body cooperates with the first dovetail platform 11 to block water. Figure 3 This is a schematic diagram of the lifting drive mechanism and lifting transmission mechanism of the rail transit flood control device preferred in the embodiment of the present invention. Figures 1 to 3 As shown, a lifting drive mechanism 40 is provided in the lifting door body 30. A lifting transmission mechanism 50 connected to the lifting drive mechanism 40 includes a lifting transmission shaft 51 and a lifting screw 52. The lifting screw 52 is provided at the bottom of the fixed frame 10, and the lifting screw 52 controls the lifting of the lifting door body 30 through the lifting drive mechanism 40.

[0101] In this embodiment, the lifting drive mechanism 40 is preferably a motor with electric control and manual control integrated. The motor is also provided with a manual lifting manual turntable shaft 41, which facilitates manual operation.

[0102] When lifting or lowering the lifting door body 30, electric control and manual control are integrated, and the same transmission structure is used in both the electric mode and the manual mode, which greatly reduces the complexity and failure rate of the transmission structure. In the electric mode, the lifting drive mechanism 40 drives the lifting transmission shaft 51 to rotate, and transmits the driving force to the lifting screw 52 through the lifting transmission shaft 51, and the lifting screw 52 set in the fixed frame 10 is used to realize the lifting and lowering of the lifting door body 30. In the manual mode, the motor does not work at this time, and a separate manual turntable is installed on the lifting manual turntable shaft 41. By manually rotating the manual turntable, the lifting transmission shaft 51 can be driven to transmit the driving force to the lifting screw 52, ​​thereby realizing the lifting and lowering of the lifting door body 30. Preferably, the torque of the lifting manual turntable shaft 41 is 60~120N.

[0103] Figure 4 This is a schematic diagram of a preferred first locking and sealing mechanism according to an embodiment of the present invention. Figure 5 FIG. 1 is a partial schematic diagram of a preferred first locking mechanism in an embodiment of the present invention. Figure 4 and Figure 5As shown, the first locking and sealing mechanism 60 pushes the slide groove 20 to lock the first surface 31 of the lifting door body with the slide groove 20. The first locking mechanism 60 includes: a first locking motor 61, which is automatically controlled and manually controlled and is arranged in the lifting door body 30. The first locking transmission shaft 62 is connected to the first locking motor 61. The first locking transmission rod 63 is connected to the first locking transmission shaft 62, and the first locking transmission rod 63 is arranged on both sides of the lifting door body 30. The eccentric shaft sliding wheel 64 is connected to the first locking transmission rod 63. The first locking transmission rod 63 drives the eccentric shaft sliding wheel 64 to change the axis position so that the first surface 31 of the lifting door is locked with the slide groove 20.

[0104] When the first locking sealing mechanism 60 is in use, in the electric mode, the first locking motor 61 drives the first locking transmission shaft 62 to rotate, and transmits the driving force to the first locking transmission rod 63, driving the first locking transmission rod 63 to swing up and down, and the first locking transmission rod 63 is connected to the eccentric shaft sliding wheel 64. The first locking transmission rod 63 drives the wheel axle of the eccentric shaft sliding wheel 64 to change the axial position by swinging, so that the eccentric shaft sliding wheel 64 applies force to one side of the slide groove 20, so that the first surface 31 of the lifting door is tightly attached to and locked with the other side of the slide groove 20.

[0105] Figure 6 This is a schematic diagram of a preferred second locking and sealing mechanism according to an embodiment of the present invention. Figure 7 This is a partial schematic diagram of a preferred second locking and sealing mechanism in an embodiment of the present invention. Figures 1 to 7 As shown, the second locking and sealing mechanism 70 can lock the first surface 31 of the lifting door body with the first dovetail platform 31. The second locking and sealing mechanism 70 includes: a second locking motor 71 with automatic control and manual control integrated, and the second locking motor 71 is arranged in the fixed frame 10. A second locking transmission member 72, and the second locking transmission member 72 is connected to the second locking motor 71. A sliding locking member 73 is arranged below the second dovetail platform 12, and the sliding locking member 73 is connected to the second locking transmission member 72. The second locking transmission member 72 drives the sliding locking member 73 to move horizontally to squeeze and lock the lifting door body 30 and the first dovetail platform 11.

[0106] In this embodiment, the sliding locking member 73 preferably includes a sliding plate 731 and a sliding block 732. The sliding plate 731 is connected to the second locking transmission member 72. The sliding block 732 is disposed between the lifting door body 30 and the sliding plate 731. The second locking transmission member 72 drives the sliding plate 731 to move horizontally through the sliding block 732 to squeeze the second surface 32 of the lifting door body, thereby squeezing and locking the first surface 31 of the lifting door body and the first dovetail platform 11.

[0107] In this embodiment, the sliding plate 731 is preferably provided with a wedge-shaped protrusion 7311, and the sliding block 732 is provided with a groove 7321 corresponding to the wedge-shaped protrusion. The horizontal movement of the sliding plate 731 drives the wedge-shaped protrusion 7311 to squeeze the sliding block 732, thereby applying force to the second surface 32 of the lifting door body, so that the first surface 31 of the lifting door body is squeezed and locked with the first dovetail platform 11.

[0108] In this embodiment, the sliding plate 731 includes a first sliding plate 731A and a second sliding plate 731A. The sliding block 732 includes a first sliding block 732A and a second sliding block 732B. The second locking transmission member 72 includes a first swing arm 721 and a second swing arm 722. The first swing arm 721 includes: a first swing arm first end 7211 connected to the second locking motor 71, a first swing arm second end 7212 connected to the first sliding plate 731A, and a first swing arm third end 7213. The second swing arm 722 includes: a second swing arm first end 7221, a second swing arm second end 7222, the second swing arm second end 7222 is connected to the second sliding plate 731B, and a second swing arm third end 7223, the second swing arm third end 7223 is connected to the first swing arm third end 7213. The second locking motor 71 drives the first end 7211 of the first swing arm, thereby driving the first swing arm 721 and the second swing arm 722 to rotate along the axis, and driving the first sliding plate 731A and the second sliding plate 731B to move relative to each other, and the first sliding plate 731A and the second sliding plate 731B squeeze the first sliding block 732A and the second sliding block 732B close to the second surface 32 of the lifting door body and apply force thereto, so that the first surface 31 of the lifting door body is locked and sealed with the first dovetail platform 11. Preferably, the first swing arm 721 and the second swing arm 722 are arranged on the seat plate 33, and the seat plate 33 is arranged on the lifting door body 30. The second locking motor 71 drives the first swing arm 721 and the second swing arm 722 to make the first sliding block 732A and the second sliding block 732B move relative to squeeze and lock the first surface 31 of the lifting door body with the first dovetail platform 11.

[0109] When the second locking and sealing mechanism 70 is used, in the electric mode, the second locking motor 71 drives the second locking transmission member 72, and the second locking transmission member 72 drives the sliding locking member 73 to move horizontally through the lever principle, and the locking wedges of the sliding plate 731 and the sliding block 732 cooperate with each other to squeeze and lock the fixed frame 10 and the lifting door body 30. In the manual mode, the second locking motor 71 does not work at this time, and a separately stored manual turntable is installed on the manual turntable shaft set on the second locking motor. By manually rotating the manual turntable, the second locking transmission member 72 can be driven to achieve the locking function.

[0110] This embodiment preferably further comprises a sealing strip (not shown in the figure), which is arranged on the first dovetail platform 11 and is used for water-blocking sealing between the fixed frame 10 and the lifting door body 30. More preferably, the sealing strip can also be arranged on the slide groove for vertical sealing and waterproofing of the lifting door body 30.

[0111] Preferably, this embodiment further includes a water pump 80 disposed at the bottom, and the water pump 80 is used to pump water from the bottom of the fixed frame 10 .

[0112] Figure 8 This is a flow chart of a control method for a rail transit flood control device preferably used in an embodiment of the present invention. Figure 8 As shown, the control method using the above rail transit flood control device includes:

[0113] S1) obtaining real-time water level;

[0114] S2) comparing the real-time water level with a preset water level threshold, and if the preset water level threshold is exceeded, controlling the lifting drive mechanism, the first locking and sealing mechanism, and the second locking and sealing mechanism to operate in sequence and sound an alarm.

[0115] Specifically, the real-time water level is obtained by the water level sensor, and the lifting drive mechanism 40, the first locking and sealing mechanism 60 and the second locking and sealing mechanism 70 are controlled to act in sequence according to the comparison result that the real-time water level meets the preset water level. Preferably, remote control can be achieved through the remote port and communication with the remote host.

[0116] By using the rail transit flood prevention device of the present invention, the fixed frame 10 can be sealed with the lifting door body 30. When the lifting door body 30 is rising or falling, the eccentric shaft sliding wheel 64 can also be used as a guide wheel to make the rising or falling process smoother. After the lifting door body 30 rises to its position, under the action of the eccentric shaft sliding wheel 64, the axis of the eccentric shaft sliding wheel 64 is squeezed toward one side of the slide groove 20, and under the action of force, the lifting door body 30 is squeezed toward the other side of the slide groove. At the same time, the second locking and sealing mechanism 70 squeezes the lifting door body 30 to achieve extrusion and fixation with the dovetail platform and the sealing strip, thereby achieving a sealing and waterproof function.

[0117] The rail transit flood prevention device using the present invention has the advantages of good sealing, good flood prevention effect, high efficiency, intelligence, no need for manual placement of flood prevention materials, strong impact resistance, and is hidden in the foundation pit in the initial state without affecting the appearance of the entrance and exit and traffic.

[0118] The above embodiments are provided for persons familiar with the art to implement or use the present application. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the application concept of the present application. Therefore, the protection scope of the present application is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A rail transit flood prevention device, comprising: A fixed frame, the fixed frame is arranged at the foundation pit, and the fixed frame comprises a first dovetail platform and a second dovetail platform; A slide groove, wherein the slide groove is arranged on both sides of the fixed frame; A lifting door body, wherein the lifting door slides up and down in the fixed frame through the sliding groove, the lifting door body comprises a first lifting door body surface and a second lifting door body surface, and the first lifting door body surface cooperates with the first dovetail platform to block water; A lifting drive mechanism, wherein the lifting drive mechanism is arranged in the lifting door body; A lifting transmission mechanism, the lifting transmission mechanism is connected to the lifting drive mechanism, the lifting transmission mechanism comprises a lifting transmission shaft and a lifting screw, the lifting screw is arranged at the bottom of the fixed frame, and the lifting screw controls the lifting of the lifting door body through the lifting drive mechanism; a first locking and sealing mechanism, wherein the first locking and sealing mechanism pushes the slide groove to lock the first surface of the lifting door body with the slide groove; A second locking and sealing mechanism is used to lock the first surface of the lifting door body with the first dovetail platform.

2. The rail transit flood prevention device according to claim 1, characterized in that: The first locking and sealing mechanism comprises: A first locking motor, wherein the first locking motor is disposed in the lifting door body, and the first locking motor is automatically controlled and manually controlled in one. a first locking transmission shaft, wherein the first locking transmission rod is connected to the first locking motor; a first locking transmission rod, the first locking transmission rod being connected to the first locking transmission shaft, and the first locking transmission rod being arranged on both sides of the lifting door body; An eccentric shaft sliding wheel, wherein the eccentric sliding wheel is connected to the first locking transmission rod, and the first locking transmission rod drives the eccentric sliding wheel to change the axis position so that the first surface of the lifting door is locked with the sliding groove 20.

3. The rail transit flood prevention device according to claim 1 or 2, characterized in that: The second locking and sealing mechanism comprises: A second locking motor, wherein the second locking motor is arranged in the fixed frame, and the second locking motor is automatically controlled and manually controlled in one. a second locking transmission member, the second locking transmission member being connected to the second locking motor; A sliding locking member is connected to the second locking transmission member, and the sliding locking member is arranged below the second dovetail platform. The second locking transmission member drives the sliding locking member to move horizontally to squeeze and lock the lifting door body and the first dovetail platform.

4. The rail transit flood prevention device according to claim 3, characterized in that: The sliding locking member comprises: a sliding plate connected to the second locking transmission member; A sliding block is slidably arranged between the lifting door body and the sliding plate, and the second locking transmission member drives the sliding plate to move horizontally to squeeze the second surface of the lifting door body through the sliding block to squeeze and lock the first surface of the lifting door body and the first dovetail platform.

5. The rail transit flood prevention device according to claim 4, characterized in that: The sliding plate is provided with a wedge-shaped protrusion, and the sliding block is provided with a groove, and the groove corresponds to the wedge-shaped protrusion.

6. The rail transit flood prevention device according to claim 4, characterized in that: The sliding plate includes a first sliding plate and a second sliding plate, the sliding block includes a first sliding block and a second sliding block, and the second locking transmission member includes: A first swing arm, wherein the first swing arm comprises: a first end of a first swing arm, wherein the first end of the first swing arm is connected to the second locking motor; a first swing arm second end, wherein the first swing arm second end is connected to the first sliding plate; The third end of the first swing arm; A second swing arm, wherein the second swing arm comprises: a first end of a second swing arm; a second end of a second swing arm, wherein the second end of the second swing arm is connected to the second sliding plate; a third end of a second swing arm, wherein the third end of the second swing arm is connected to the third end of the first swing arm; The second locking motor drives the first swing arm and the second swing arm to make the first sliding plate and the second sliding plate move relative to each other to squeeze and lock the first surface of the lifting door body and the first dovetail platform.

7. The rail transit flood prevention device according to claim 1, characterized in that: It also includes a sealing strip, which is arranged on the first dovetail platform and is used for water-retaining sealing between the fixed frame and the lifting door body.

8. The rail transit flood prevention device according to claim 1, characterized in that: The lifting drive mechanism is a motor that integrates electric control and manual control.

9. The rail transit flood prevention device according to claim 1, characterized in that: A water pump is also provided at the bottom of the fixed frame, and the water pump is used to pump water from the bottom of the fixed frame.

10. A control method for a rail transit flood control device, characterized in that: The rail transit flood prevention device according to any one of claims 1 to 9 comprises: Get real-time water level; The real-time water level is compared with a preset water level threshold. If the preset water level threshold is exceeded, the lifting drive mechanism, the first locking and sealing mechanism and the second locking and sealing mechanism are controlled to operate in sequence and an alarm is issued.

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