A submarine entrance and exit lifting door based on sea level

Abstract

The present invention belongs to the technical field of hydraulic structures, and specifically is a submarine entrance and exit lifting gate based on sea level, comprising a fixed frame, a modified valve is arranged in the middle of the inner cavity of the fixed frame, and suspension equipment is symmetrically arranged on the left and right sides of the fixed frame; the suspension equipment comprises a semi-open strip shell, and a modified floating block is arranged at the bottom of the inner wall of the semi-open strip shell. The device can automatically adjust the lifting height of the closed valve through the suspension equipment on both sides during the process of opening the closed valve to allow the submarine to enter and exit, so that the distance between the closed valve and the current sea level is kept constant, avoiding the following problems: when the closed valve is lifted to a certain height to allow the submarine to enter and exit, the sea level rises during the process of the submarine passing through the valve, causing the submarine to float up synchronously, and then the bottom of the closed valve is too close to the position of the submarine, and even the submarine cannot pass smoothly.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic structures, in particular to a submarine entrance and exit lifting gate based on the sea level. Background Art

[0002] Gates are control facilities used to close and open water discharge channels. They are an important part of hydraulic structures and can be used to intercept water flow, control water levels, regulate flow, discharge sediment and floating objects, etc. At present, there are lifting gates, hydraulic automatic flap gates, cylinder-type push gates, air-floating gates, air-shield gates, etc., which can not only regulate water levels, but also serve as sea ports to open special ports for ships, yachts and other equipment to release them.

[0003] Since the sea level often experiences high tides, when a submarine passes through a gate at sea level, the height of the submarine is often flush with the current sea level. Therefore, compared with ordinary river gates, gates used at sea level need to adjust their own height in real time to ensure that the distance between the opening at the bottom of the gate and the sea level is constant, so that after the submarine passes through the gate quickly, the gate can be quickly closed, and then adjustment feedback can be performed based on the monitoring of the sea surface. There will be a problem of adjustment lag, and the effect of real-time monitoring and adjustment of the gate height cannot be achieved, so improvement is needed. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention solves the technical problems by adopting a technical solution: a submarine entrance and exit lifting door based on sea level, comprising a fixed frame, a modified valve is arranged in the middle of the inner cavity of the fixed frame, and suspension devices are symmetrically arranged on the left and right sides of the fixed frame;

[0005] The suspension device comprises a semi-open shell, a modified floating block is arranged at the bottom of the inner wall of the semi-open shell, a follow-up slider is slidably connected to the side of the inner wall of the semi-open shell away from the modified floating block, a docking magnetic rod is fixedly connected to the side of the inner cavity of the follow-up slider close to the modified floating block, a power-on guide rod is slidably connected to the side of the inner cavity of the follow-up slider away from the docking magnetic rod, a signal device is fixedly connected to the top of the power-on guide rod, an external fixed tube is fixedly connected to the top of the output shaft of the signal device, a control power supply is fixedly connected to the right end of the external fixed tube, a conductive link is slidably connected to the side of the inner cavity of the control power supply away from the external fixed tube, and the semi-open shell is divided into left and right two layers of space, wherein the room where the modified floating block is located has a water inlet at the bottom, and the room where the follow-up slider is located is in a sealed state;

[0006] The modified floating block includes a hollow shell, and a rotating motor is symmetrically arranged on the left and right sides of the inner wall of the hollow shell, the rotating motor is a small waterproof motor, the outer surface of the rotating motor output shaft is fixedly connected to an auxiliary roller, the middle of the inner cavity of the hollow shell is fixedly connected to a horizontal magnetic plate, and the front and rear sides of the upper surface of the hollow shell are symmetrically arranged with a traction shell, and the bottom end of the traction shell output shaft is symmetrically arranged with a bent pull plate, and the outer surface of the bent pull plate is slidably connected to the top of the inner cavity of the hollow shell through a through slide groove, the auxiliary roller is directly rollingly connected to the inner wall of the semi-open strip shell through the grooves on both sides, and the rotating motors on the upper two sides are pulled by the bent pull plate and can perform horizontal sliding movement.

[0007] Furthermore, the fixed frame includes a vertical guide plate, the top end of the vertical guide plate is fixedly connected to a limiting cover plate, a docking device is provided at the axis center of the bottom of the inner cavity of the limiting cover plate, threaded guide grooves are symmetrically provided on both sides of the inner cavity of the limiting cover plate, an extension guide plate is fixedly connected at the axis center on the upper surface of the limiting cover plate, and the fixed frame is always fixed on the sea surface.

[0008] Furthermore, the modified valve includes a closed valve, and sliding grooves adapted to the sliding rods on the inner wall of the vertical guide plate are opened on both sides of the closed valve, so that the modified valve can move vertically, and pressure-sensing components are symmetrically arranged on the front and rear sides of the outer surface of the closed valve, and threaded pull rods are symmetrically arranged on the left and right sides of the top of the inner cavity of the closed valve, and the top of the threaded pull rod is fixedly connected to the torque motor, and the outer surface of the torque motor is fixedly connected to the cluster sleeve.

[0009] Further, the front and rear sides of the outer surface of the cluster sleeve are both slidably connected to the inner wall of the extension guide plate, the number of the threaded pull rods is two, the bottom end of the threaded pull rod is rotatably connected to the top of the inner cavity of the closed valve, the outer surface of the threaded pull rod is threadedly connected to the inner cavity of the limit cover plate through a threaded guide groove, and the left and right sides of the outer surface of the closed valve are both slidably connected to the inner wall of the vertical guide plate through an adaptation guide groove. The number of the semi-open strip shells is two, the outer surface of the semi-open strip shell is fixedly connected to the outer surface of the vertical guide plate, the top of the semi-open strip shell is fixedly connected to one side of the inner cavity of the limit cover plate, the bottom end of the power-on guide rod is fixedly connected to the bottom of the inner wall of the semi-open strip shell, the upper surface of the signaler is fixedly connected to the top of the inner wall of the semi-open strip shell, and the end of the conductive link away from the control power supply is fixedly connected to the inner cavity of the torque motor.

[0010] Furthermore, the docking device includes a fixed sensor, and guide sleeves are symmetrically arranged on both sides of the outer surface of the fixed sensor, and the bottom of the inner wall of the guide sleeve is slidably connected to a concave shell, and the upper surface of the concave shell is fixedly connected to a buffer spring, and the top of the buffer spring is fixedly connected to a pressure-sensitive gasket, and the upper surface of the pressure-sensitive gasket is fixedly connected to a guide rod and the inner cavity of the fixed sensor. There are two fixed sensors, and the outer surface of the fixed sensor is fixedly connected to the axis of the bottom of the inner cavity of the limit cover plate, and the lower surface of the fixed sensor is fixedly connected to a switching wire, and vertical plug rods are symmetrically arranged on the front and rear sides of the upper surface of the closed valve, and the top of the vertical plug rod is plugged into the inner wall of the concave shell.

[0011] Further, the pressure-sensitive component includes an elastic disc, fixed claws are symmetrically arranged on both sides of the outer surface of the elastic disc, extrusion rods are symmetrically arranged on both sides of the inner cavity of the elastic disc, and a built-in wire is fixedly connected to the middle of the inner cavity of the extrusion rod. There are two elastic discs, both sides of the outer surface of the elastic disc are fixedly connected to the middle of the outer surface of the closed valve through fixed claws, the front and rear ends of the extrusion rod are mutually squeezed with the inner cavity of the elastic disc, the outer surface of the built-in wire is fixedly connected to the inner cavity of the closed valve, and the top end of the built-in wire extends to the outside of the closed valve.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. The device can automatically adjust the lifting height of the closed valve through the suspension equipment on both sides during the process of opening the closed valve to allow the submarine to enter and exit, so as to keep the distance between the closed valve and the current sea level constant, avoiding the situation where the closed valve is lifted to a certain height to allow the submarine to enter and exit, and the sea level rises during the submarine passing through the valve, causing the submarine to float up simultaneously, resulting in the bottom of the closed valve being too close to the submarine, and even the submarine being unable to pass smoothly.

[0014] 2. The device monitors the actual position of the current sea level through the modified floating blocks on both sides, and the modified floating blocks are modified so that during normal monitoring work, the modified floating blocks can eliminate the influence of the inner wall resistance of the semi-open shell through rolling friction, ensuring that the semi-open shell can stably slide through a smaller buoyancy and ensure the sensitivity of the suspension equipment. When not in working state, the auxiliary rollers and the inner wall of the semi-open shell can be enlarged to forcibly overcome the influence of buoyancy and actively lower the modified floating blocks to the lowest point, so that the closed valve can be closed without being affected by the suspension equipment.

[0015] 3. The modified buoy is always located inside the semi-open shell. According to the principle of communicating vessels, the height of the sea water at the bottom of the modified buoy is the same as the height of the sea level, so the modified buoy can indirectly monitor the height of the sea level. The actual sea level cannot be in a stable state due to the influence of waves, and when the submarine passes through the valve, the submarine causes stronger waves on the sea surface. However, under the protection of the semi-open shell, the modified buoy will not slide significantly and always maintain a relatively stable state, thereby ensuring the anti-interference ability of the suspension equipment and reliable stability during operation.

[0016] 4. The device limits the rising movement of the closing valve through the docking equipment. When the closing valve rises to the highest point, it will feed back to the operating table in advance, so as to stop the raising of the closing valve in advance, so as to avoid excessive squeezing between the closing valve and the limit cover plate, resulting in deformation of the limit cover plate; when the closing valve is located below the sea level to block the opening, it can feed back to the operating table through the pressure-sensing component, and then adjust the actual position of the closing valve to ensure that the closing valve is in a suitable water pressure area, so as to prevent the closing valve from being damaged due to excessive water pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the present invention;

[0018] Figure 2 is a cross-sectional view of the present invention;

[0019] Figure 3 is a cross-sectional view of the suspension device of the present invention;

[0020] Figure 4 is a cross-sectional view of a modified floating block of the present invention;

[0021] Figure 5 is a cross-sectional view of a fixed frame of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the modified valve of the present invention;

[0023] Figure 7 is a partial cross-sectional view of the docking device of the present invention;

[0024] Figure 8 It is a structural schematic diagram of the pressure-sensitive component of the present invention.

[0025] In the figure: 1. fixed frame; 11. limit cover plate; 12. threaded guide groove; 13. extension guide plate; 14. vertical guide plate; 2. suspension device; 21. semi-open strip shell; 22. follow-up slider; 23. docking magnetic rod; 24. power guide rod; 25. signal device; 26. external fixed tube; 27. control power supply; 28. conductive joint; 4. modified floating block; 41. hollow shell; 42. bent pull plate; 43. traction pull shell; 44. rotating motor; 45. Auxiliary roller; 46. Horizontal magnetic plate; 3. Modified valve; 31. Closing valve; 32. Vertical plug rod; 33. Threaded pull rod; 34. Torque motor; 35. Cluster sleeve; 6. Docking equipment; 61. Fixed sensor; 62. Guide sleeve; 63. Pressure-sensitive gasket; 64. Buffer spring; 65. Concave housing; 66. Adapter wire; 5. Pressure-sensitive component; 51. Elastic plate; 52. Fixed claw; 53. Extrusion connecting rod; 54. Built-in wire. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0027] Example 1, please refer to Figure 1-Figure 5 The present invention provides a technical solution: a submarine entrance and exit lifting gate based on sea level, comprising a fixed frame 1, a modified valve 3 is arranged in the middle of the inner cavity of the fixed frame 1, and a suspension device 2 is symmetrically arranged on the left and right sides of the fixed frame 1;

[0028] The suspension device 2 includes a semi-open shell 21, a modified floating block 4 is arranged at the bottom of the inner wall of the semi-open shell 21, a follow-up slider 22 is slidably connected to the side of the inner wall of the semi-open shell 21 away from the modified floating block 4, a docking magnetic rod 23 is fixedly connected to the side of the inner cavity of the follow-up slider 22 close to the modified floating block 4, a power guide rod 24 is slidably connected to the side of the inner cavity of the follow-up slider 22 away from the docking magnetic rod 23, a signal device 25 is fixedly connected to the top of the power guide rod 24, and the signal device 25 has a power supply structure for power supply. The current emitted by 25 will eventually flow back to the inside of the signal device, achieving the effect of real-time current detection. The top end of the output shaft of the signal device 25 is fixedly connected to an external fixed tube 26, and the right end of the external fixed tube 26 is fixedly connected to a control power supply 27. The inner cavity of the control power supply 27 is away from the external fixed tube 26. The side is slidably connected to a conductive link 28. The semi-open strip shell 21 is divided into two layers of space on the left and right. The room where the modified floating block 4 is located has a water inlet at the bottom, and the room where the follower slider 22 is located is in a sealed state.

[0029] The modified floating block 4 includes a hollow shell 41, and a rotating motor 44 is symmetrically arranged on the left and right sides of the inner wall of the hollow shell 41. The rotating motor 44 is a small waterproof motor. The outer surface of the output shaft of the rotating motor 44 is fixedly connected with an auxiliary roller 45, and the middle part of the inner cavity of the hollow shell 41 is fixedly connected with a horizontal magnetic plate 46. The front and rear sides of the upper surface of the hollow shell 41 are symmetrically arranged with a traction shell 43, and the bottom end of the output shaft of the traction shell 43 is symmetrically arranged with a bent pull plate 42, and the outer surface of the bent pull plate 42 is slidably connected to the top of the inner cavity of the hollow shell 41 through a through-slide groove, and the auxiliary roller 45 is directly rollingly connected to the inner wall of the semi-open strip shell 21 through the grooves on both sides, and the rotating motors 44 on the upper two sides are pulled by the bent pull plate 42, and can perform horizontal sliding movement.

[0030] The fixed frame 1 includes a vertical guide plate 14, the top of which is fixedly connected to a limiting cover plate 11, a docking device 6 is arranged at the axis center of the bottom of the inner cavity of the limiting cover plate 11, threaded guide grooves 12 are symmetrically provided on both sides of the inner cavity of the limiting cover plate 11, an extension guide plate 13 is fixedly connected to the axis center of the upper surface of the limiting cover plate 11, and the fixed frame 1 is always fixed on the sea surface.

[0031] The modified valve 3 includes a closed valve 31, and sliding grooves adapted to the sliding rods on the inner wall of the vertical guide plate 14 are opened on both sides of the closed valve 31, so that the modified valve 3 can move vertically, and pressure-sensing components 5 are symmetrically arranged on the front and rear sides of the outer surface of the closed valve 31, and threaded pull rods 33 are symmetrically arranged on the left and right sides of the top of the inner cavity of the closed valve 31. The top of the threaded pull rod 33 is fixedly connected to the torque motor 34, and the outer surface of the torque motor 34 is fixedly connected to the cluster sleeve 35.

[0032] The front and rear sides of the outer surface of the clustering sleeve 35 are both slidably connected to the inner wall of the extension guide plate 13. There are two threaded rods 33. The bottom end of the threaded rod 33 is rotatably connected to the top of the inner cavity of the closed valve 31. The outer surface of the threaded rod 33 is threadedly connected to the inner cavity of the limit cover plate 11 through the threaded guide groove 12. The left and right sides of the outer surface of the closed valve 31 are both slidably connected to the inner wall of the vertical guide plate 14 through the matching guide groove. There are two semi-open bar shells 21. The outer surface of the semi-open bar shell 21 is fixedly connected to the outer surface of the vertical guide plate 14. The top of the semi-open bar shell 21 is fixedly connected to one side of the inner cavity of the limit cover plate 11. The bottom end of the power-on guide rod 24 is fixedly connected to the bottom of the inner wall of the semi-open bar shell 21. The upper surface of the signaler 25 is fixedly connected to the top of the inner wall of the semi-open bar shell 21. The end of the conductive link 28 away from the control power supply 27 is fixedly connected to the inner cavity of the torque motor 34.

[0033] After the device is set up at the entrance and exit of the submarine, the openings on both sides can be opened by opening the closing valve 31 for the entry and exit of the submarine. The specific operation is as follows: inside the cluster sleeve 35, the torque motors 34 on both sides slowly twist the corresponding threaded pull rods 33, so that the threaded pull rods 33 rotate clockwise along the threaded guide groove 12, and then the threaded pull rods 33 spirally slide upward. Since the bottom end of the threaded pull rod 33 is rotationally connected to the top of the inner cavity of the closing valve 31, the threaded pull rod 33 will drive the closing valve 31 to rise, and then the closing valve 31 slides up along the vertical guide plates 14 on both sides to open the opening. At this time, the cluster sleeve 35 also slides up through the top extension guide plate 13; when the threaded pull rod 33 rotates counterclockwise, the closing valve 31 slowly descends to block the opening.

[0034] When the device is installed on the sea level, according to the principle of communicating vessels, seawater will enter the room on the side of the semi-open shell 21 with the modified floating block 4 through the opening at the bottom of the semi-open shell 21, and then the seawater inside the semi-open shell 21 will be flush with the sea level outside. At this time, the seawater will generate buoyancy on the modified floating block 4 inside the semi-open shell 21, so that the modified floating block 4 always remains relatively parallel to the sea level. In the process of sliding along the inner wall of the semi-open shell 21, the modified floating block 4 will drive the side follow-up slider 22 to move forward through the horizontal magnetic plate 46 in the middle. The moving slider 22 moves along the energized guide rod 24. According to the rheostat principle, the closer the moving slider 22 is to the signal device 25 above, the greater the current actually passed into the energized guide rod 24, which in turn causes the electric signal received by the signal device 25 to increase, and the electric signal is fed back to the control power supply 27 through the external fixed tube 26, so that the control power supply 27 controls the torque motor 34 through the conductive linkage 28 to continue to drive the closing valve 31 to rise, thereby achieving the effect of adjusting the opening height of the closing valve 31 in synchronization with the actual sea level height.

[0035] In order to minimize the influence of friction resistance on the modified floating block 4, when the hollow shell 41 slides along the inner wall of the semi-open strip shell 21, the semi-open strip shell 21 will slide against the wall through the auxiliary rollers 45 on the upper and lower sides, and move smoothly through buoyancy and rolling friction. When the closed valve 31 needs to be closed, since the modified floating block 4 is still suspended above the sea level due to the buoyancy of seawater, it is necessary to control the auxiliary rollers 45 through the rotating motors 44 on both sides, and slide down by utilizing the rolling friction between the auxiliary rollers 45 and the inner wall of the semi-open strip shell 21. At this time, the traction pull shell 43 pushes the top rotating motor 44 and the auxiliary rollers 45 to both sides through the bent pull plates 42 on both sides, thereby increasing the squeezing force between the auxiliary rollers 45 and the inner wall of the semi-open strip shell 21, thereby preventing the modified floating block 4 and the semi-open strip shell 21 from slipping.

[0036] Example 2, please refer to Figure 1-Figure 8 The present invention provides a technical solution: on the basis of the first embodiment, the docking device 6 includes a fixed sensor 61, and guide sleeves 62 are symmetrically arranged on both sides of the outer surface of the fixed sensor 61, and a concave shell 65 is slidably connected to the bottom of the inner wall of the guide sleeve 62, and a buffer spring 64 is fixedly connected to the upper surface of the concave shell 65, and a pressure-sensitive gasket 63 is fixedly connected to the top of the buffer spring 64, and the upper surface of the pressure-sensitive gasket 63 is fixedly connected to the guide rod and the inner cavity of the fixed sensor 61. There are two fixed sensors 61, and the outer surface of the fixed sensor 61 is fixedly connected to the axis of the bottom of the inner cavity of the limit cover plate 11, and the lower surface of the fixed sensor 61 is fixedly connected to the adapter wire 66, and the vertical plug rods 32 are symmetrically arranged on the front and rear sides of the upper surface of the closing valve 31, and the top of the vertical plug rod 32 is plugged into the inner wall of the concave shell 65.

[0037] The pressure-sensitive component 5 includes an elastic plate 51, and fixed claws 52 are symmetrically arranged on both sides of the outer surface of the elastic plate 51, and extrusion connecting rods 53 are symmetrically arranged on both sides of the inner cavity of the elastic plate 51, and a built-in wire 54 is fixedly connected to the middle of the inner cavity of the extrusion connecting rod 53. There are two elastic plates 51, and both sides of the outer surface of the elastic plate 51 are fixedly connected to the middle of the outer surface of the closed valve 31 through the fixed claws 52, and the front and rear ends of the extrusion connecting rod 53 are mutually squeezed with the inner cavity of the elastic plate 51, and the outer surface of the built-in wire 54 is fixedly connected to the inner cavity of the closed valve 31, and the top end of the built-in wire 54 extends to the outside of the closed valve 31.

[0038] When the closing valve 31 rises to the position about to reach the highest point, the vertical insertion rod 32 above the closing valve 31 will first be inserted into the interior of the guide sleeve 62, and then squeeze the concave sleeve 65 upward, triggering the pressure-sensitive gasket 63 on the top through the squeezing force of the buffer spring 64. As the squeezing force fed back by the pressure-sensitive gasket 63 gradually increases, the fixed sensor 61 will feed back to the operating table through the adapter wire 66, thereby stopping the raising of the closing valve 31 in advance.

[0039] When the closing valve 31 is located below the sea level to block the opening, the water pressure on the seabed will cause an squeezing effect on the closing valve 31. At this time, the elastic discs 51 located on the front and rear sides will deform toward the side that fits the closing valve 31 under the action of the water pressure, and then press the ends of the squeezing connecting rod 53 on both sides of the middle of the closing valve 31, so that the squeezing connecting rod 53 is fed back to the operating table through the built-in wire 54, and then the actual position of the closing valve 31 is adjusted to ensure that the closing valve 31 is in a suitable water pressure area.

[0040] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A submarine entrance and exit lifting door based on sea level, comprising a fixed frame (1), a modified valve (3) is arranged in the middle of the inner cavity of the fixed frame (1), and suspension devices (2) are symmetrically arranged on the left and right sides of the fixed frame (1), characterized in that: The suspension device (2) comprises a semi-open shell (21), a modified floating block (4) is arranged at the bottom of the inner wall of the semi-open shell (21), a follower slider (22) is slidably connected to the side of the inner wall of the semi-open shell (21) away from the modified floating block (4), a docking magnetic rod (23) is fixedly connected to the side of the inner cavity of the follower slider (22) close to the modified floating block (4), an energized guide rod (24) is slidably connected to the side of the inner cavity of the follower slider (22) away from the docking magnetic rod (23), a signal device (25) is fixedly connected to the top of the energized guide rod (24), an external fixed tube (26) is fixedly connected to the top of the output shaft of the signal device (25), a control power supply (27) is fixedly connected to the right end of the external fixed tube (26), and a conductive link (28) is slidably connected to the side of the inner cavity of the control power supply (27) away from the external fixed tube (26); The modified floating block (4) comprises a hollow shell (41), a rotating motor (44) is symmetrically arranged on the left and right sides of the inner wall of the hollow shell (41), an auxiliary roller (45) is fixedly connected to the outer surface of the output shaft of the rotating motor (44), a horizontal magnetic plate (46) is fixedly connected to the middle of the inner cavity of the hollow shell (41), a traction shell (43) is symmetrically arranged on the front and rear sides of the upper surface of the hollow shell (41), a bent pull plate (42) is symmetrically arranged at the bottom end of the output shaft of the traction shell (43), and the outer surface of the bent pull plate (42) is slidably connected to the top of the inner cavity of the hollow shell (41) through a through-sliding groove; The fixed frame (1) comprises a vertical guide plate (14), the top end of the vertical guide plate (14) is fixedly connected to a limit cover plate (11), a docking device (6) is arranged at the axis center of the bottom of the inner cavity of the limit cover plate (11), threaded guide grooves (12) are symmetrically provided on both sides of the inner cavity of the limit cover plate (11), and an extension guide plate (13) is fixedly connected to the axis center of the upper surface of the limit cover plate (11); The modified valve (3) comprises a closed valve (31), pressure-sensitive components (5) are symmetrically arranged on the front and rear sides of the outer surface of the closed valve (31), threaded pull rods (33) are symmetrically arranged on the left and right sides of the top of the inner cavity of the closed valve (31), the top of the threaded pull rod (33) is fixedly connected to a torque motor (34), and the outer surface of the torque motor (34) is fixedly connected to a cluster sleeve (35); The front and rear sides of the outer surface of the cluster sliding sleeve (35) are both slidably connected to the inner wall of the extension guide plate (13), the number of the threaded pull rods (33) is two, the bottom ends of the threaded pull rods (33) are rotatably connected to the top of the inner cavity of the closed valve (31), the outer surface of the threaded pull rod (33) is threadedly connected to the inner cavity of the limit cover plate (11) through the threaded guide groove (12), and the left and right sides of the outer surface of the closed valve (31) are both slidably connected to the inner wall of the vertical guide plate (14) through the matching guide groove; The number of the semi-open shells (21) is two, the outer surface of the semi-open shells (21) is fixedly connected to the outer surface of the vertical guide plate (14), the top of the semi-open shells (21) is fixedly connected to one side of the inner cavity of the limit cover plate (11), the bottom end of the power-on guide rod (24) is fixedly connected to the bottom of the inner wall of the semi-open shell (21), the upper surface of the signal device (25) is fixedly connected to the top of the inner wall of the semi-open shell (21), and the end of the conductive link (28) away from the control power supply (27) is fixedly connected to the inner cavity of the torque motor (34); The docking device (6) comprises a fixed sensor (61), guide sleeves (62) are symmetrically arranged on both sides of the outer surface of the fixed sensor (61), a concave sleeve (65) is slidably connected to the bottom of the inner wall of the guide sleeve (62), a buffer spring (64) is fixedly connected to the upper surface of the concave sleeve (65), a pressure-sensitive gasket (63) is fixedly connected to the top of the buffer spring (64), and the upper surface of the pressure-sensitive gasket (63) is fixedly connected to the guide rod and the inner cavity of the fixed sensor (61).

2. The submarine entrance and exit lifting door based on sea level according to claim 1, characterized in that: There are two fixed sensors (61), the outer surface of the fixed sensor (61) is fixedly connected to the axis of the bottom of the inner cavity of the limit cover plate (11), the lower surface of the fixed sensor (61) is fixedly connected to a switching wire (66), and vertical plug rods (32) are symmetrically arranged on the front and rear sides of the upper surface of the closed valve (31), and the top of the vertical plug rod (32) is plugged into the inner wall of the concave shell (65).

3. The submarine entrance and exit lifting door based on sea level according to claim 1, characterized in that: The pressure-sensitive component (5) comprises an elastic plate (51), fixed claws (52) are symmetrically arranged on both sides of the outer surface of the elastic plate (51), extrusion connecting rods (53) are symmetrically arranged on both sides of the inner cavity of the elastic plate (51), and a built-in wire (54) is fixedly connected to the middle of the inner cavity of the extrusion connecting rod (53).

4. The submarine entrance and exit lifting door based on sea level according to claim 3 is characterized by: There are two elastic discs (51), and both sides of the outer surface of the elastic disc (51) are fixedly connected to the middle of the outer surface of the closed valve (31) through fixed claws (52). The front and rear ends of the extrusion connecting rod (53) are mutually squeezed with the inner cavity of the elastic disc (51). The outer surface of the built-in wire (54) is fixedly connected to the inner cavity of the closed valve (31), and the top end of the built-in wire (54) extends to the outside of the closed valve (31).

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