Life-saving structures suitable for urban flooding

Abstract

The present invention relates to the technical field of life-saving structures, and discloses a life-saving structure suitable for urban waterlogging. The structure is arranged in an urban culvert or river channel, and comprises a longitudinally arranged cylinder with a cylinder cavity inside that runs through the top of the cylinder; a peripheral movable sleeve of the cylinder is provided with a floating ring that floats up and down synchronously with changes in water level; a swing plate is provided on the top of the cylinder, and the swing plate is provided with a spring; when the swing plate is horizontal, the top of the cover is opened and the spring is compressed, and when the other side of the swing plate is disengaged from the snap connection with the cylinder, the spring recovers the deformation to make the swing plate tilted; a life-saving bag is provided on the swing plate, and when the swing plate swings to an inclined state relative to the cylinder, the life-saving bag is disengaged from the swing plate; the cylinder is provided with a plurality of hollow grooves arranged in strips; a plurality of radial strips extend from the inner side of the floating ring, and the floating ring is connected to a touch structure, which is placed in the cylinder cavity and moves synchronously with the floating ring, thereby automatically responding to water level changes, not being affected by the waterlogging environment, and timely deploying the life-saving bag.

Description

Technical Field

[0001] The patent of this invention relates to the technical field of life-saving structures, specifically, to a life-saving structure suitable for urban flooding. Background Art

[0002] Some cities will set up fixed life-saving facilities in flood-prone areas such as culverts and rivers. The advantage is that they do not need to be carried by humans and can be used directly by trapped people. However, fixed life-saving facilities also have some problems. For example, the location of the facilities is not reasonable enough, resulting in the life-saving kits not being delivered in time, making it difficult for trapped people to find and use them in time; the maintenance and updating of the facilities are also relatively difficult, and they are easily damaged when exposed to the outdoor environment for a long time, affecting their life-saving effect.

[0003] In the existing technology, although fixed life-saving facilities do not need to be carried manually, trapped people need to actively find and use them. If the facilities are not set up reasonably or the trapped people are not aware enough, it is difficult to obtain life-saving kits in time. The setting location of fixed life-saving facilities is relatively fixed, and the deployment range cannot be flexibly adjusted according to the specific situation of inland flooding, which may result in some trapped areas being unable to obtain life-saving kits in time. Summary of the Invention

[0004] The purpose of the present invention is to provide a life-saving structure suitable for urban waterlogging, aiming to solve the problem of untimely delivery of life-saving bags in the prior art.

[0005] The present invention is implemented as follows: it is arranged in an urban culvert or river channel and includes a longitudinally arranged column, the interior of the column having a longitudinally arranged cylindrical cavity, the cylindrical cavity passing through the top of the column to form a top opening; the outer periphery of the column is provided with a floating ring that floats up and down synchronously with the change of water level;

[0006] A swing plate is provided on the top of the column, one side of the swing plate is hinged to the column, and the other side of the swing plate is connected to the column with a movable buckle to form a buckle structure, and a spring is provided on the other side of the swing plate;

[0007] When the swing plate is horizontal, the swing plate covers the top opening, the spring is compressed, and the other side of the swing plate is snap-connected with the column; when the other side of the swing plate is disconnected from the column, the spring recovers its deformation, driving the other side of the swing plate to swing relative to the column, so that the swing plate is tilted;

[0008] The swing plate is provided with a life-saving bag, which contains a life jacket and a life buoy. When the swing plate swings to an inclined state relative to the cylinder, the life-saving bag is separated from the swing plate.

[0009] The cylinder is provided with a plurality of hollow slots arranged in strips, and the cylinder cavity is connected to the outside through the hollow slots. The plurality of hollow slots are arranged at intervals along the circumference of the cylinder and extend along the axial direction of the cylinder. The inner side of the floating ring is provided with a plurality of radial strips, and the plurality of radial strips are movable through the plurality of hollow slots and extend into the cylinder cavity.

[0010] The float is connected to a trigger structure, which is placed in the cylinder cavity. During the process of water level rising or falling, the float moves upward or downward along the axial direction of the cylinder column, the radial strip moves upward or downward along the hollow groove, and the trigger structure moves synchronously with the float. When the water level rises to a set height, the trigger structure abuts against the snap structure, and the other side of the swing plate is disconnected from the cylinder column. The spring drives the swing plate to swing upward to an inclined state, and the life-saving bag on the swing plate falls onto the water surface.

[0011] Furthermore, a flat air bag layer is formed on the bottom of the life-saving bag. When the life-saving bag falls on the water surface, the air bag layer floats on the water surface.

[0012] Furthermore, a flexible rope is connected to the airbag layer, and the flexible rope is connected to the swing plate. When the life-saving bag is placed on the swing plate, the flexible rope is in a wound and stored state. When the life-saving bag falls into the water, the flexible rope unfolds into a strip-shaped unfolded state.

[0013] Furthermore, a linear raised track is provided on the swing plate, and the track extends to the periphery of the swing plate, and the track is extended along the swing direction of the swing plate; a linear track groove is provided at the bottom of the life-saving bag, and the track is movably placed in the track groove; when the swing plate swings upward relative to the cylinder, the life-saving bag slides along the direction of the track until the life-saving bag is separated from the swing plate.

[0014] Furthermore, the buckle structure includes a clamping seat provided on the inner side wall of the cylindrical cavity and a clamping shaft connected to the other side of the swing plate, the upper end of the clamping shaft is fixedly connected to the swing plate, the lower end of the clamping shaft extends freely downward, and a clamping hook is formed on the lower end of the clamping shaft;

[0015] A cylinder is provided on the top of the card seat, and the cylinder has a telescopic shaft for driving the card shaft to swing, and the telescopic shaft is arranged toward the card shaft; a limit switch for controlling the start or stop of the cylinder is provided on the inner wall of the cylindrical cavity; when the swing plate covers the top opening, the hook is connected to the bottom buckle of the card seat; when the water level rises to the set height, the trigger structure abuts the limit switch, the telescopic shaft of the cylinder drives the card shaft to swing, and the hook of the card shaft is disconnected from the buckle connection with the card seat.

[0016] Furthermore, a mounting seat is convexly provided on the inner side wall of the cylinder cavity, the top of the mounting seat is arranged flush with the top of the cylinder column, and the mounting seat has a downwardly recessed mounting groove; the lower part of the spring is placed in the mounting groove and fixedly connected to the mounting seat, and the upper part of the spring extends to the top of the mounting seat; when the swing plate is sealed on the top of the cylinder column and the swing plate is snap-connected to the cylinder column, the upper part of the spring is compressed into the mounting groove, and the spring is in a compressed state.

[0017] Furthermore, the radial strip is an elastic sheet that is bent and elastically deformed, the outer end of the radial strip is docked on the floating ring, the inner end of the radial strip passes through the hollow groove and extends into the cylinder cavity, and the inner ends of multiple radial strips are gathered and docked to form a docking position; along the direction from the outside to the inside of the radial strip, the radial strip is arranged to bend downward.

[0018] Furthermore, the trigger structure includes a drive bar and an axial bar arranged in a bent shape, the lower end of the drive bar is fixedly connected to the docking position, and the upper end of the drive bar extends toward the inner side wall of the lower cylindrical cavity; a guide rail groove is provided on the inner side wall of the cylindrical cavity, and the guide rail groove extends axially of the cylindrical cavity;

[0019] The axial bar is movably placed in the guide rail groove, and the upper end of the drive bar is obliquely hinged to the middle part of the axial bar; the top of the drive bar forms the touch end, and the limit switch is arranged at the top of the guide rail groove; when the float ring floats upward, the drive bar moves upward with the float ring, and drives the axial bar to move synchronously upward in the guide rail groove;

[0020] When the float floats upward to a set height, the trigger end presses against the limit switch, and the telescopic shaft of the cylinder drives the clamping shaft to swing, so that the clamping hook of the clamping shaft is disconnected from the clamping seat.

[0021] Furthermore, two flat floating plates made of foam material are connected to the bottom of the floating ring. The floating plates are arranged around the circumference of the floating ring, and the two floating plates are nested with each other, with an annular gap arranged in an annular manner between the two floating plates.

[0022] The bottom of the float ring has a middle portion located in the annular interval, the middle portion is arranged in an annular shape, and the middle portion is recessed upward away from the annular interval to form a recessed annular groove; the middle portion is connected to a plurality of flexible strips extending into the water, and the plurality of flexible strips are spaced around the circumference of the middle portion, the upper ends of the flexible strips are fixedly connected to the top of the recessed annular groove, and the lower ends of the flexible strips extend freely downward and are immersed in the water.

[0023] Furthermore, the two floating plates include an inner floating plate and an outer floating plate surrounding the outer circumference of the inner floating plate, and the annular spacer is formed between the inner floating plate and the outer floating plate; a longitudinal plate immersed in water extends downward from the outer side of the outer floating plate, and the longitudinal plate is arranged around the circumference of the outer floating plate; a plurality of transverse holes are provided in the longitudinal plate, and the plurality of transverse holes are evenly arranged along the circumference of the longitudinal plate.

[0024] Compared with the existing technology, the life-saving structure for urban flooding provided by the present invention realizes real-time monitoring and response to water level changes by utilizing the property of the float ring that automatically floats up and down with water level changes;

[0025] When the water level rises to a set height, the float drives the trigger structure to move, triggering the snap mechanism to release the swing plate. The spring then drives the swing plate upward to an inclined position, allowing the life-saving bag to automatically detach and fall onto the water surface. This process requires no human intervention and can automatically respond to water level changes when urban flooding occurs, providing life-saving bags to trapped people in a timely manner.

[0026] Compared with manually deployed or fixed life-saving facilities, the automated setting of the life-saving structure has a fast response speed, a wide deployment range, and is not affected by the complex waterlogging environment. It avoids rescue delays caused by untimely manual deployment and significantly improves the response speed and success rate of urban waterlogging rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional schematic diagram of a life-saving structure applicable to urban waterlogging provided by the present invention;

[0028] Figure 2 It is a structural schematic diagram of the life-saving bag provided by the present invention;

[0029] Figure 3 It is a structural schematic diagram of the floating ring provided by the present invention;

[0030] Figure 4 It is a structural schematic diagram of the hook and the holder provided by the present invention;

[0031] Figure 5 This is a schematic structural diagram of the hook provided by the present invention when it is separated from the holder;

[0032] In the figure: cylinder 100, cylinder cavity 101, guide rail groove 102, axial strip 103, drive strip 104, docking position 105, hollow groove 106, swing plate 200, life-saving bag 201, airbag layer 202, rail groove 203, float ring 300, radial strip 301, annular spacer 302, middle part 303, flexible strip 304, inner float plate 305, outer float plate 306, longitudinal plate 307, transverse hole 308, clamping seat 400, clamping shaft 401, clamping hook 402, cylinder 403, telescopic shaft 404, limit switch 405, mounting seat 406, mounting groove 407, spring 408. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0035] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] Reference Figure 1-5 The figure shows a preferred embodiment of the present invention.

[0037] The life-saving structure is suitable for urban flooding and is arranged in urban culverts or rivers. It includes a longitudinally arranged column 100, the interior of which has a longitudinally arranged cylinder cavity 101. The cylinder cavity 101 runs through the top of the column 100 to form a top opening. The outer periphery of the column 100 is provided with a floating ring 300 that floats up and down synchronously with the change of water level.

[0038] A swing plate 200 is provided on the top of the column 100. One side of the swing plate 200 is hinged to the column 100, and the other side of the swing plate 200 is movably connected to the column 100 by a snap-fit structure, and a spring 408 is provided on the other side of the swing plate 200.

[0039] When the swing plate 200 is horizontal, the swing plate 200 covers the top opening, the spring 408 is compressed, and the other side of the swing plate 200 is snap-connected with the column 100; when the other side of the swing plate 200 is disconnected from the column 100, the spring 408 recovers its deformation, driving the other side of the swing plate 200 to swing relative to the column 100, so that the swing plate 200 is tilted;

[0040] A life-saving bag 201 is provided on the swing plate 200. The life-saving bag 201 contains a life jacket and a life buoy. When the swing plate 200 swings to an inclined position relative to the column 100, the life-saving bag 201 is separated from the swing plate 200.

[0041] The cylinder 100 is provided with a plurality of hollow slots 106 arranged in a strip shape, and the cylinder cavity 101 is connected to the outside through the hollow slots 106. The plurality of hollow slots 106 are arranged at intervals along the circumference of the cylinder 100 and extend axially along the cylinder 100. The inner side of the float ring 300 is provided with a plurality of radial strips 301, and the plurality of radial strips 301 are movable through the plurality of hollow slots 106 and extend into the cylinder cavity 101.

[0042] The float 300 is connected to a trigger structure, which is placed in the cylinder cavity 101. When the water level rises or falls, the float 300 moves upward or downward along the axial direction of the cylinder 100, and the radial strip 301 moves upward or downward along the hollow groove 106. The trigger structure moves synchronously with the float 300; when the water level rises to a set height, the trigger structure abuts against the snap structure, and the other side of the swing plate 200 is disconnected from the snap connection with the cylinder 100. The spring 408 drives the swing plate 200 to swing upward to an inclined state, and the life-saving bag 201 on the swing plate 200 falls onto the water surface.

[0043] The lifesaving structure provided above, which is suitable for urban flooding, realizes real-time monitoring and response to water level changes by utilizing the characteristic of the float 300 that automatically floats up and down with water level changes.

[0044] When the water level rises to a set height, the float 300 drives the trigger structure to move, triggering the snap mechanism to release the swing plate 200. The spring 408 then drives the swing plate 200 to swing upward to an inclined position, allowing the life-saving bag 201 to automatically detach and fall onto the water surface. This process requires no human intervention and can automatically respond to water level changes when urban flooding occurs, providing the life-saving bag 201 to trapped people in a timely manner.

[0045] Compared with manually deployed or fixed life-saving facilities, the automated setting of the life-saving structure has a fast response speed, a wide deployment range, and is not affected by the complex waterlogging environment. It avoids rescue delays caused by untimely manual deployment and significantly improves the response speed and success rate of urban waterlogging rescue.

[0046] In this embodiment, a flat airbag layer 202 is formed at the bottom of the life-saving bag 201. When the life-saving bag 201 falls on the water surface, the airbag layer 202 floats on the water surface. In this way, the life-saving bag 201 can float on the water surface quickly and stably after being separated from the swing plate 200, thereby improving the visibility and accessibility of the life-saving bag 201, making it easier for trapped people to find and use it in time, thereby effectively improving the life-saving effect of the life-saving bag 201.

[0047] In this embodiment, a flexible rope is connected to the airbag layer 202, and the flexible rope is connected to the swing plate 200. When the life-saving bag 201 is placed on the swing plate 200, the flexible rope is in a wound and stored state. When the life-saving bag 201 falls into the water, the flexible rope unfolds into a strip-shaped unfolded state.

[0048] By unfolding the flexible rope after the life-saving bag 201 is separated from the swing plate 200, the buoyancy and stability of the life-saving bag 201 can be increased. At the same time, the unfolded state of the flexible rope is also convenient for trapped people to grab, thereby improving the convenience and reliability of the life-saving bag 201.

[0049] In this embodiment, a linear raised track is provided on the swing plate 200, and the track extends to the periphery of the swing plate 200, and the track is extended along the swing direction of the swing plate 200; a linear track groove 203 is provided at the bottom of the life-saving bag 201, and the track is movably placed in the track groove 203; when the swing plate 200 swings upward relative to the column 100, the life-saving bag 201 slides along the direction of the track until the life-saving bag 201 is separated from the swing plate 200.

[0050] In this way, the life-saving bag 201 can slide and detach smoothly during the swinging process of the swinging plate 200, avoiding the life-saving bag 201 from getting stuck or offset during the detachment process, ensuring that the life-saving bag 201 can be accurately dropped onto the water surface, improving the accuracy and reliability of the drop of the life-saving bag 201, and thus realizing the timely drop of the life-saving bag 201.

[0051] In this embodiment, the buckle structure includes a clamping seat 400 provided on the inner side wall of the cylindrical cavity 101 and a clamping shaft 401 connected to the other side of the swing plate 200. The upper end of the clamping shaft 401 is fixedly connected to the swing plate 200, and the lower end of the clamping shaft 401 extends freely downward. The lower end of the clamping shaft 401 is formed with a hook 402.

[0052] A cylinder 403 is provided on the top of the card base 400. The cylinder 403 has a telescopic shaft 404 that drives the card shaft 401 to swing, and the telescopic shaft 404 is arranged toward the card shaft 401; a limit switch 405 that controls the start or stop of the cylinder 403 is provided on the inner wall of the cylindrical cavity 101; when the swing plate 200 covers the top opening, the hook 402 is connected to the bottom buckle of the card base 400; when the water level rises to the set height, the trigger structure abuts the limit switch 405, the telescopic shaft 404 of the cylinder 403 drives the card shaft 401 to swing, and the hook 402 of the card shaft 401 is disconnected from the buckle connection with the card base 400.

[0053] By utilizing the snap-fit structure, the connection between the swing plate 200 and the column 100 is made more stable and reliable. At the same time, through the cooperation of the cylinder 403 and the limit switch 405, automatic control of the swing plate 200 is achieved. When the water level rises to the set height, the swing plate 200 can be released in time, making the life-saving kit 201 more quickly and accurately deployed, further improving the timeliness and effectiveness of the deployment of the life-saving kit 201.

[0054] In this embodiment, a mounting seat 406 is convexly provided on the inner wall of the cylindrical cavity 101, the top of the mounting seat 406 is arranged flush with the top of the column 100, and the mounting seat 406 has a downwardly recessed mounting groove 407; the lower part of the spring 408 is placed in the mounting groove 407 and is fixedly connected to the mounting seat 406, and the upper part of the spring 408 extends to the top of the mounting seat 406; when the swing plate 200 is sealed on the top of the column 100 and the swing plate 200 is snap-connected with the column 100, the upper part of the spring 408 is compressed into the mounting groove 407, and the spring 408 is in a compressed state.

[0055] By setting up the mounting seat 406, a stable mounting base is provided for the spring 408, ensuring that the spring 408 can be effectively compressed when the swing plate 200 is closed, and quickly release energy when needed to drive the swing plate 200 to swing, thereby realizing the timely delivery of the life-saving kit 201 and improving the efficiency and reliability of the delivery of the life-saving kit 201.

[0056] In this embodiment, the radial strips 301 are elastic sheets that are bent and elastically deformed. The outer ends of the radial strips 301 are docked on the float ring 300, and the inner ends of the radial strips 301 pass through the hollow grooves 106 and extend into the cylindrical cavity 101. The inner ends of multiple radial strips 301 are gathered and docked to form a docking position 105. The radial strips 301 are arranged in a downwardly curved manner along the direction from the outside to the inside of the radial strips 301.

[0057] In this way, the radial strips 301 have good elastic deformation ability and can maintain a stable connection state during the floating process of the float 300. At the same time, the curved arrangement of the radial strips 301 also helps to improve the stability of the float 300, ensuring that the float 300 can accurately respond to water level changes, thereby ensuring the timeliness and accuracy of the deployment of the life-saving kit 201.

[0058] In this embodiment, the trigger structure includes a drive bar 104 and an axial bar 103 arranged in a bent shape. The lower end of the drive bar 104 is fixedly connected to the docking position 105, and the upper end of the drive bar 104 extends toward the inner side wall of the lower cylindrical cavity 101. A guide rail groove 203102 is provided on the inner side wall of the cylindrical cavity 101, and the guide rail groove 203102 extends axially of the cylindrical cavity 101.

[0059] The axial bar 103 is movably positioned within the guide rail groove 203102. The upper end of the drive bar 104 is obliquely hinged to the middle portion of the axial bar 103. The top of the drive bar 104 forms the triggering end, and the limit switch 405 is disposed at the top of the guide rail groove 203102. As the float ring 300 floats upward, the drive bar 104 moves upward with the float ring 300, driving the axial bar 103 to move synchronously upward within the guide rail groove 203102.

[0060] When the float 300 floats upward to a set height, the trigger end presses the limit switch 405, and the telescopic shaft 404 of the cylinder 403 drives the clamping shaft 401 to swing, and the hook 402 of the clamping shaft 401 is disconnected from the clamping seat 400.

[0061] The setting of the touch structure achieves accurate sensing and response to water level changes. When the water level rises to the set height, the snap structure can be triggered in time to release the swing plate 200, making the life-saving kit 201 more quickly and accurately released, effectively improving the timeliness and reliability of the release of the life-saving kit 201.

[0062] In this embodiment, two flat floating plates made of foam material are connected to the bottom of the float ring 300. The floating plates are arranged around the circumference of the float ring 300, and the two floating plates are nested with each other. There is an annular spacer 302 arranged in an annular manner between the two floating plates.

[0063] The bottom of the float 300 has a middle portion 303 located within the annular spacer 302. The middle portion 303 is arranged in an annular shape and is recessed upward away from the annular spacer 302 to form a recessed annular groove. Connected to the middle portion 303 are multiple flexible strips 304 extending into the water. The multiple flexible strips 304 are spaced around the circumference of the middle portion 303. The upper ends of the flexible strips 304 are fixedly connected to the top of the recessed annular groove, while the lower ends of the flexible strips 304 extend freely downward and are immersed in the water.

[0064] The floating plate and the flexible strip 304 can make the float 300 more stable as a whole during the floating process, effectively resist the impact and interference of the water flow, and keep the float 300 floating steadily, thereby ensuring the stability and accuracy of the release of the life-saving bag 201.

[0065] In this embodiment, the two floating plates include an inner floating plate 305 and an outer floating plate 306 surrounding the outer circumference of the inner floating plate 305, and an annular spacer 302 is formed between the inner floating plate 305 and the outer floating plate 306; a longitudinal plate 307 immersed in water extends downward from the outer side of the outer floating plate 306, and the longitudinal plate 307 is arranged around the circumference of the outer floating plate 306; a plurality of transverse holes 308 are provided in the longitudinal plate 307, and the plurality of transverse holes 308 are evenly arranged along the circumference of the longitudinal plate 307.

[0066] The longitudinal plate 307 and the transverse hole 308 can limit the excessive horizontal movement of the float 300, so that it can float up and down more stably with the change of water level, reducing the impact and interference of the water flow on the float 300, thereby ensuring the stable floating of the float 300.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A life-saving structure suitable for urban flooding, characterized in that: It is arranged in urban culverts or rivers, and includes a longitudinally arranged cylinder, the interior of which has a longitudinally arranged cylinder cavity, which passes through the top of the cylinder to form a top opening; the outer periphery of the cylinder is provided with a floating ring that floats up and down synchronously with the change of water level; A swing plate is provided on the top of the column, one side of the swing plate is hinged to the column, and the other side of the swing plate is connected to the column with a movable buckle to form a buckle structure, and a spring is provided on the other side of the swing plate; When the swing plate is horizontal, the swing plate covers the top opening, the spring is compressed, and the other side of the swing plate is snap-connected with the column; when the other side of the swing plate is disconnected from the column, the spring recovers its deformation, driving the other side of the swing plate to swing relative to the column, so that the swing plate is tilted; The swing plate is provided with a life-saving bag, which contains a life jacket and a life buoy. When the swing plate swings to an inclined state relative to the cylinder, the life-saving bag is separated from the swing plate. The cylinder is provided with a plurality of hollow slots arranged in strips, and the cylinder cavity is connected to the outside through the hollow slots. The plurality of hollow slots are arranged at intervals along the circumference of the cylinder and extend along the axial direction of the cylinder. The inner side of the floating ring is provided with a plurality of radial strips, and the plurality of radial strips are movable through the plurality of hollow slots and extend into the cylinder cavity. The float is connected to a trigger structure, which is placed in the cylinder cavity. During the process of water level rising or falling, the float moves upward or downward along the axial direction of the cylinder column, the radial strip moves upward or downward along the hollow groove, and the trigger structure moves synchronously with the float. When the water level rises to a set height, the trigger structure abuts against the snap structure, and the other side of the swing plate is disconnected from the cylinder column. The spring drives the swing plate to swing upward to an inclined state, and the life-saving bag on the swing plate falls onto the water surface.

2. The lifesaving structure suitable for urban flooding according to claim 1, characterized in that: A flat air bag layer is formed on the bottom of the life-saving bag. When the life-saving bag falls on the water surface, the air bag layer floats on the water surface.

3. The lifesaving structure suitable for urban flooding according to claim 2, characterized in that: A flexible rope is connected to the airbag layer, and the flexible rope is connected to the swing plate. When the life-saving bag is placed on the swing plate, the flexible rope is in a wound and stored state. When the life-saving bag falls into the water, the flexible rope is unfolded into a strip-shaped unfolded state.

4. The lifesaving structure suitable for urban flooding according to claim 3, characterized in that: The swing plate is provided with a linear raised track, which extends to the periphery of the swing plate and is arranged along the swinging direction of the swing plate; the bottom of the life-saving bag is provided with a linear track groove, and the track is movably placed in the track groove; when the swing plate swings upward relative to the cylinder, the life-saving bag slides along the direction of the track until the life-saving bag is separated from the swing plate.

5. The lifesaving structure suitable for urban flooding according to any one of claims 1 to 4, characterized in that: The buckle structure includes a clamping seat provided on the inner side wall of the cylindrical cavity and a clamping shaft connected to the other side of the swing plate, wherein the upper end of the clamping shaft is fixedly connected to the swing plate, and the lower end of the clamping shaft freely extends downward, and a clamping hook is formed on the lower end of the clamping shaft; A cylinder is provided on the top of the card seat, and the cylinder has a telescopic shaft for driving the card shaft to swing, and the telescopic shaft is arranged toward the card shaft; a limit switch for controlling the start or stop of the cylinder is provided on the inner wall of the cylindrical cavity; when the swing plate covers the top opening, the hook is connected to the bottom buckle of the card seat; when the water level rises to the set height, the trigger structure abuts the limit switch, the telescopic shaft of the cylinder drives the card shaft to swing, and the hook of the card shaft is disconnected from the buckle connection with the card seat.

6. The lifesaving structure suitable for urban flooding according to claim 5, characterized in that: A mounting seat is convexly provided on the inner side wall of the cylinder cavity, the top of the mounting seat is arranged flush with the top of the cylinder column, and a downwardly recessed mounting groove is provided in the mounting seat; the lower part of the spring is placed in the mounting groove and fixedly connected to the mounting seat, and the upper part of the spring extends above the mounting seat; when the swing plate is sealed on the top of the cylinder column and the swing plate is snap-connected to the cylinder column, the upper part of the spring is compressed into the mounting groove, and the spring is in a compressed state.

7. The lifesaving structure suitable for urban flooding according to any one of claims 1 to 4, characterized in that: The radial strip is an elastic sheet that is bent and elastically deformed. The outer end of the radial strip is docked on the floating ring, and the inner end of the radial strip passes through the hollow groove and extends into the cylinder cavity. The inner ends of multiple radial strips are gathered and docked to form a docking position; along the direction from the outside to the inside of the radial strip, the radial strip is bent downward.

8. The lifesaving structure suitable for urban flooding according to claim 5, characterized in that: The trigger structure includes a drive bar and an axial bar arranged in a bent shape. The lower end of the drive bar is fixedly connected to the docking position, and the upper end of the drive bar extends toward the inner side wall of the lower cylinder cavity. A guide rail groove is provided on the inner side wall of the cylinder cavity, and the guide rail groove extends axially of the cylinder cavity. The axial bar is movably placed in the guide rail groove, and the upper end of the drive bar is obliquely hinged to the middle part of the axial bar; the top of the drive bar forms the touch end, and the limit switch is arranged at the top of the guide rail groove; when the float ring floats upward, the drive bar moves upward with the float ring, and drives the axial bar to move synchronously upward in the guide rail groove; When the float floats upward to a set height, the trigger end presses against the limit switch, and the telescopic shaft of the cylinder drives the clamping shaft to swing, so that the clamping hook of the clamping shaft is disconnected from the clamping seat.

9. The lifesaving structure suitable for urban flooding according to claim 8, characterized in that: The bottom of the float ring is connected to two flat floating plates made of foam material. The floating plates are arranged around the circumference of the float ring. The two floating plates are nested with each other, and there is an annular gap between the two floating plates. The bottom of the float ring has a middle portion located in the annular interval, the middle portion is arranged in an annular shape, and the middle portion is recessed upward away from the annular interval to form a recessed annular groove; the middle portion is connected to a plurality of flexible strips extending into the water, and the plurality of flexible strips are spaced around the circumference of the middle portion, the upper ends of the flexible strips are fixedly connected to the top of the recessed annular groove, and the lower ends of the flexible strips extend freely downward and are immersed in the water.

10. The lifesaving structure suitable for urban flooding according to claim 9, characterized in that: The two floating plates include an inner floating plate and an outer floating plate surrounding the outer circumference of the inner floating plate, and the annular spacer is formed between the inner floating plate and the outer floating plate; a longitudinal plate immersed in water extends downward from the outer side of the outer floating plate, and the longitudinal plate is arranged around the circumference of the outer floating plate; a plurality of transverse holes are provided in the longitudinal plate, and the plurality of transverse holes are evenly arranged along the circumference of the longitudinal plate.

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