Fabricated anti-collision equipment for pier in water area

Abstract

The invention discloses assembly type anti-collision equipment for a water area pier, relates to the technical field of bridge protection, and solves the technical problems that most of existing technical schemes are of an integral structure, installation and maintenance are inconvenient, the buffering and energy absorbing effects are limited, and diversification requirements of different water area environments and bridge structures are difficult to meet. Comprising a ring pipe body, an inner supporting structure is arranged in the ring pipe body, a monitoring structure is arranged on the inner supporting structure, a floating stabilizing structure is arranged at the lower end of the inner supporting structure, and an elastic pipe is arranged in the ring pipe body. The influence on water traffic is reduced; the six movable connecting structures can be flexibly assembled to adapt to piers or embankments of different shapes and scales, and the universality is high; oval elastic pipes are stacked in a crossed mode and combined with an inner supporting structure, the impact energy absorption and buffering effect is remarkably improved, and impact force is effectively dispersed.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge protection, and specifically to an assembled anti-collision device for water area piers. Background Art

[0002] Assembled anti-collision devices usually adopt multi-layer designs such as steel structures, rubber, and composite materials. They can absorb and disperse impact forces when a ship or floating object collides, prevent the impact energy from directly acting on the pier body, and reduce the risk of pier damage, deformation, or even collapse. In addition, the assembled anti-collision device has the characteristics of quick installation and easy maintenance. It can be prefabricated in a factory and transported to the site for assembly, greatly shortening the construction period, reducing the interference with water traffic, and also facilitating later inspection and replacement. The assembled design can also be flexibly adjusted according to different bridge and water area environments, with strong adaptability and able to meet various engineering requirements; The application of assembled anti-collision devices has important practical significance. It can effectively ensure the safety of bridge structures, passing vehicles, and pedestrians, reduce traffic accidents caused by ship collisions, and improve the safety level of infrastructure. The use of anti-collision facilities helps to reduce the repair and maintenance costs of bridges after being damaged by impacts, extend the service life of bridges, and save a large amount of social resources. Such devices pay attention to environmental protection during the design and construction process, can minimize the impact on the water area ecological environment, and meet the requirements of sustainable development. The assembled anti-collision device improves the ability to respond to emergencies, buys precious time for emergency rescue, and has a positive promoting effect on ensuring regional traffic smoothness and economic development; Existing technical solutions are mostly of integral structures, having problems such as inconvenient installation and maintenance, limited buffer energy absorption effect, and being difficult to adapt to the diverse requirements of different water area environments and bridge structures. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the present invention provides an assembled anti-collision device for water area piers, solving the technical problems that existing technical solutions are mostly of integral structures, having inconvenient installation and maintenance, limited buffer energy absorption effect, and being difficult to adapt to the diverse requirements of different water area environments and bridge structures.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: An assembled anti-collision device for water area piers, including an annular pipe body. An internal support structure is arranged inside the annular pipe body. A monitoring structure is arranged on the internal support structure. A floating stability structure is arranged at the lower end of the internal support structure. An elastic tube is arranged inside the annular pipe body. The elastic tube is an oval ring body. The elastic tubes are cross-overlapped and installed inside the annular pipe body. Detection air bags are fixedly installed outside the annular pipe body. Six movable connection structures are installed outside the annular pipe body.

[0005] Preferably, the inner support structure includes columns, a rotating sleeve is rotatably installed outside the columns, a cross is installed on the rotating sleeve, an inner support frame is installed inside the annular pipe body, there are four groups of the inner support frames in total, a horizontal connecting rod is rotatably installed on the four groups of the inner support frames, the other end of the horizontal connecting rod is rotatably connected to the outer end of the cross, a return spring is connected between the rotating sleeve and the inner side wall surface of the annular pipe body, the return spring is in a compressed state, and a waterproof pipe is arranged outside the return spring.

[0006] Preferably, the movable connection structure includes a connection end plate, an outer support frame is fixedly installed outside the annular pipe body, a pitching shaft is rotatably installed on the outer support frame, a pitching connecting rod is rotatably installed on the pitching shaft, the other end of the pitching connecting rod is rotatably connected to a pitching swing rod, the other end of the pitching swing rod is rotatably connected to a lining plate, the lining plate and the connection end plate are rotatably connected, and a damping buffer part is connected between the lining plate and the pitching shaft.

[0007] Preferably, the damping buffer part includes a damper, the damper is fixedly installed on the pitching shaft, the telescopic end of the damper is connected to the inner end face of the lining plate, a buffer spring is sleeved outside the damper, and a waterproof sliding sleeve is sleeved outside the buffer spring.

[0008] Preferably, the detection airbag is a round-headed cylindrical inflatable flexible sleeve, the number of the detection airbags is twelve, the detection airbags are evenly distributed at the outer end of the annular pipe body, and a pressure relief valve is arranged on the detection airbag.

[0009] Preferably, the monitoring structure includes a monitoring camera, the monitoring camera is fixedly installed at the upper end of the column, and an auxiliary radar and a warning light are fixedly installed on the column.

[0010] Preferably, the floating and stabilizing structure includes an anchoring column and a floating annular pipe, the anchoring column is fixedly installed at the lower end of the column, a counterweight is arranged at the lower end of the anchoring column, a water flow guiding part is arranged on the anchoring column, the number of the floating annular pipes is two, and the two floating annular pipes are respectively fixedly installed at the inner circle and the outer circle of the lower end face of the annular pipe body.

[0011] Preferably, the water flow guiding part includes a guiding sleeve, the guiding sleeve is rotatably sleeved outside the anchoring column, a pair of vertical guiding plates are fixedly installed on the guiding sleeve, and a pair of horizontal guiding plates are rotatably installed on the guiding sleeve.

[0012] Preferably, the rotation axis of the horizontal guiding plate is perpendicular to the rotation axis of the guiding sleeve.

[0013] Beneficial effects: An assembled anti-collision device for a water area pier provided by the present invention has the following remarkable beneficial effects: 1. Adopting modular prefabricated design, each component can be prefabricated in the factory. On-site, it can be quickly assembled into a regular hexagonal combined anti-collision structure through six movable connection structures or directly connected to the pier and bank, which can significantly shorten the on-site construction period, reduce the water area operation time, and reduce the interference to water traffic. During later maintenance, the damaged module can be disassembled and replaced separately without overall demolition, significantly improving the maintenance convenience.

[0014] 2. Through the multi-axis rotation design of the pitching axis, pitching connecting rod, pitching swing rod and inner lining plate, the six movable connection structures can achieve flexible connection at different angles, which can not only adapt to regular piers such as circular and square ones, but also fit irregular banks or complex water area structures through angle adjustment, with strong versatility, solving the problem that traditional integral structures cannot adapt to diverse scenarios.

[0015] 3. The oval elastic tubes in the annular tube body are stacked in a cross-over manner to form a three-dimensional energy-absorbing network. When being impacted, the elastic tubes absorb energy through the deformation of the oval cross-section and disperse the impact force in multiple directions. Compared with traditional single structures, the energy absorption efficiency is improved.

[0016] 4. The rotating sleeve, cross and horizontal connecting rod in the inner support structure form a linkage mechanism. When the annular tube body is impacted, the cross drives the horizontal connecting rod to rotate, and further absorbs energy through the compression of the return spring. The return spring is in a pre-compressed state and can automatically reset after collision, enabling the device to have multiple anti-collision capabilities and extending the service life.

[0017] 5. Twelve detection airbags are evenly distributed outside the annular tube body. As flexible energy-absorbing elements, they accurately monitor the impact position and intensity through the pressure change in the airbags during impact, and transmit the data to the monitoring system through the built-in sensors to achieve real-time early warning of collision events. The detection airbags are equipped with pressure relief valves, which automatically release the internal gas when encountering a super-strong impact, avoiding the structural failure caused by the bursting of the airbags and improving the safety in extreme environments.

[0018] 6. The double floating annular tubes are respectively arranged on the inner and outer circles of the lower end face of the annular tube body, evenly distributing the buoyancy to ensure that the device automatically rises and falls with the water level change; the counterweight at the lower end of the anchor post enhances the anti-drift ability to adapt to different water depth environments; the guide sleeve, vertical guide plate and horizontal guide plate on the anchor post form a water flow guiding part. The axis of the rotatable horizontal guide plate is perpendicular to the water flow direction, effectively guiding the water flow around the device and reducing the impact load of the water flow on the device, improving the stability in complex hydrodynamic environments. Brief Description of the Drawings

[0019] Figure 1 It is the first three-dimensional structure schematic diagram of an assembled anti-collision device for water area piers described in this invention.

[0020] Figure 2This is the second three-dimensional structural schematic diagram of an assembled anti-collision device for water area bridge piers according to the present invention.

[0021] Figure 3 This is the front view structural schematic diagram of an assembled anti-collision device for water area bridge piers according to the present invention.

[0022] Figure 4 This is the top view structural schematic diagram of an assembled anti-collision device for water area bridge piers according to the present invention.

[0023] Figure 5 This is the top view sectional structural schematic diagram of an assembled anti-collision device for water area bridge piers according to the present invention.

[0024] Figure 6 This is the front view sectional structural schematic diagram of an assembled anti-collision device for water area bridge piers according to the present invention.

[0025] Figure 7 This is the inclined plane sectional structural schematic diagram of an assembled anti-collision device for water area bridge piers according to the present invention.

[0026] In the figure: 1, annular pipe body; 2, elastic pipe; 3, detection airbag; 4, column; 5, rotating sleeve; 6, cross; 7, inner support frame; 8, horizontal connecting rod; 9, return spring; 10, waterproof pipe; 11, connecting end plate; 12, outer support frame; 13, pitching axis; 14, pitching connecting rod; 15, pitching swing rod; 16, inner lining plate; 17, damper; 18, buffer spring; 19, waterproof sliding sleeve; 20, pressure relief valve; 21, monitoring camera; 22, auxiliary radar; 23, warning light; 24, anchoring column; 25, floating annular pipe; 26, guide sleeve; 27, vertical guide plate; 28, horizontal guide plate; 29, counterweight. Specific embodiments

[0027] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The detailed description is as follows.

[0028] Please refer to Figures 1 - 7, the present invention provides a technical solution: an assembled anti-collision device for water area bridge piers, including an annular pipe body 1. An internal support structure is arranged inside the annular pipe body 1, a monitoring structure is arranged on the internal support structure, a floating and stabilizing structure is arranged at the lower end of the internal support structure, an elastic pipe 2 is arranged inside the annular pipe body 1. The elastic pipe 2 is an oval ring body, and the elastic pipes 2 are cross-overlapped and installed inside the annular pipe body 1. Detection air bags 3 are fixedly installed outside the annular pipe body 1, and six movable connection structures are installed outside the annular pipe body 1. Through these six movable connection structures, this device forms a regular hexagon combined anti-collision structure with other assembled anti-collision devices, or is connected to the bridge piers in the water area to achieve impact energy absorption in a certain area. Through the connection of multiple assembled anti-collision devices, it can be installed at various shaped water area bridge piers, riverbanks, etc. An internal support structure is provided inside to enhance the overall strength and stability of the anti-collision device; the monitoring structure is used to monitor the surrounding environment and collision conditions in real time, improve the safety warning ability, calculate the impact source position through the pressure change during the extrusion of the detection air bag 3, and assist in alarm. The floating and stabilizing structure ensures the stable suspension and position fixation of the device in the water area, adapting to water level changes; the oval elastic pipes 2 inside the annular pipe body 1 are cross-overlapped to enhance the energy absorption and buffering ability, and effectively disperse the impact energy.

[0029] In this embodiment, it is further set that the internal support structure includes a column 4. A rotating sleeve 5 is rotatably installed outside the column 4, a cross 6 is installed on the rotating sleeve 5, and an internal support frame 7 is installed inside the annular pipe body 1. There are a total of four groups of internal support frames 7. Horizontal connecting rods 8 are rotatably installed on the four groups of internal support frames 7, and the other ends of the horizontal connecting rods 8 are rotatably connected to the outer ends of the cross 6. A return spring 9 is connected between the rotating sleeve 5 and the inner side wall surface of the annular pipe body 1. The return spring 9 is in a compressed state, and a waterproof pipe 10 is arranged outside the return spring 9; through the structures of the column 4 and the rotating sleeve 5, the deformation adaptability of the internal support structure is enhanced. When external extrusion occurs, the internal extrusion transmitted by the energy-absorbed elastic pipe 2 and the annular pipe body 1 causes the cross 6 to rotate, driving the four horizontal connecting rods 8 to rotate together. Through the energy absorption of the compression of the return spring 9, the force transmission path is fully dispersed, and it automatically resets after a low-intensity collision, ensuring that the structure returns to its original state and has the ability to resist horizontal collisions multiple times; the waterproof pipe 10 wraps the return spring 9 to prevent water body corrosion and extend the service life of the structure.

[0030] In this embodiment, it is further set that the movable connection structure includes a connecting end plate 11. An outer support frame 12 is fixedly installed outside the annular pipe body 1. A pitching shaft 13 is rotatably installed on the outer support frame 12. A pitching connecting rod 14 is rotatably installed on the pitching shaft 13. The other end of the pitching connecting rod 14 is rotatably connected to a pitching swing rod 15. The other end of the pitching swing rod 15 is rotatably connected to an inner lining plate 16. The inner lining plate 16 is rotatably connected to the connecting end plate 11. A damping buffer part is connected between the inner lining plate 16 and the pitching shaft 13. When there are changes in water surface fluctuations, a rigid connection is not convenient for withstanding impacts at different height positions. However, through the rotation of the pitching swing rod 15 and the rotation of the inner lining plate 16 and the connecting end plate 11, the movable connection structure can achieve buffering and energy absorption on water surfaces with different slopes, and still maintain its position without capsizing under large water surface changes. At the same time, when being impacted, it can be energy-absorbed by the damper 17 and the buffer spring 18 to slow down the impact process.

[0031] In this embodiment, it is further set that the damping buffer part includes a damper 17. The damper 17 is fixedly installed on the pitching shaft 13. The telescopic end of the damper 17 is connected to the inner end face of the inner lining plate 16. A buffer spring 18 is sleeved outside the damper 17. A waterproof sliding sleeve 19 is sleeved outside the buffer spring 18.

[0032] In this embodiment, it is further set that the detection airbag 3 is a round-headed cylindrical inflatable flexible sleeve. The number of the detection airbags 3 is twelve. The detection airbags 3 are evenly distributed at the outer end of the annular pipe body 1. A pressure relief valve 20 is arranged on the detection airbag 3. As a flexible energy-absorbing element distributed at the outer end of the annular pipe body 1, the detection airbag 3 can deform and absorb energy during impact, and at the same time, detect impacts through the pressure change in the detection airbag 3. The pressure relief valve 20 is designed to automatically relieve pressure in extreme impacts to prevent the detection airbag 3 from bursting, improving the overall safety and reliability.

[0033] In this embodiment, it is further set that the monitoring structure includes a monitoring camera 21. The monitoring camera 21 is fixedly installed at the upper end of the column 4. An auxiliary radar 22 and a warning light 23 are fixedly installed on the column 4. The monitoring structure integrates the monitoring camera 21, the auxiliary radar 22 and the warning light 23 to achieve all-weather and omnidirectional monitoring and warning of the surrounding area of the water area pier. The monitoring camera 21 is used for real-time video monitoring. The auxiliary radar 22 can achieve target detection and auxiliary distance scanning. The warning light 23 improves visibility at night or in bad weather, enhancing the intelligence and active safety functions of the protection device.

[0034] In this embodiment, it is further arranged that the floating and stabilizing structure includes an anchoring column 24 and a floating ring pipe 25. The anchoring column 24 is fixedly installed at the lower end of the upright column 4. A counterweight 29 is arranged at the lower end of the anchoring column 24. A water flow guiding part is arranged on the anchoring column 24. The number of the floating ring pipes 25 is two, and the two floating ring pipes 25 are respectively fixedly installed at the inner and outer circles of the lower end face of the ring pipe body 1. Through the combination of the anchoring column 24 and the floating ring pipe 25, the floating and stabilizing structure ensures the stable suspension and positioning of the anti-collision device in the water area. The counterweight 29 improves the stability of the structure in the water and prevents drifting. The water flow guiding part optimizes the water flow around the structure and reduces the influence of the water flow on the device. The double floating ring pipes 25 are distributed at different positions, further improving the uniformity of the buoyancy distribution and the overall stability.

[0035] In this embodiment, it is further arranged that the water flow guiding part includes a guiding sleeve 26. The guiding sleeve 26 is rotatably sleeved outside the anchoring column 24. A pair of vertical guiding plates 27 are fixedly installed on the guiding sleeve 26. A pair of horizontal guiding plates 28 are rotatably installed on the guiding sleeve 26, and the rotation axis of the horizontal guiding plate 28 is perpendicular to the rotation axis of the guiding sleeve 26. Through the combination of the guiding sleeve 26, the vertical guiding plates 27 and the horizontal guiding plates 28, the water flow guiding part effectively guides and disperses the water flow, reduces the impact of the water flow on the anchoring column 24 and the entire anti-collision structure, and improves the adaptability in a complex hydrodynamic environment. The rotatable horizontal guiding plate 28 enhances the self-adaptability of the system and further improves the long-term safe operation ability of the anti-collision device.

[0036] The detailed connection means are well-known techniques in the art, and the working principle is as follows: S1. Modular assembly: A plurality of ring pipe bodies 1 are assembled into a regular hexagon combined anti-collision network through six movable connection structures, or directly surrounded and fixed around the pier. Each ring pipe body 1 is provided with buoyancy by the floating ring pipe 25, and in cooperation with the counterweight 29 at the lower end of the anchoring column 24, the device floats on the water surface and maintains vertical stability. S2. Pre-tightening of the inner support structure: The return spring 9 is initially in a compressed state. The rotation sleeve 5, the cross 6 and the horizontal connecting rod 8 provide a radial supporting force for the ring pipe body 1, so that the whole structure has an initial stiffness. S3. When a ship or a floating object impacts the device, the energy is gradually dissipated through the following levels: The impact force is initially buffered by the movable connection structure and then transmitted to the detection airbag 3 at the outer end of the ring pipe body 1. The inflation structure of its round head cylinder deforms, and the initial impact energy is absorbed by gas compression. The twelve detection airbags 3 are evenly distributed at the outer end of the ring pipe body 1, and the impact position can be accurately located through the pressure change. The impact force is transmitted to the elliptical elastic tube 2 inside the ring pipe body 1. The cross-over stacked elliptical ring bodies disperse the single-point impact force into three-dimensional stress through the elastic deformation in the long axis direction, effectively extending the action time and reducing the impact peak value. When the annular tube body 1 is impacted and deformed, the cross 6 drives the horizontal connecting rod 8 to rotate around the inner support frame 7, forcing the rotating sleeve 5 to compress the return spring 9, converting kinetic energy into the elastic potential energy of the spring; the linkage design of the four groups of horizontal connecting rods 8 disperses the impact force along the vertical diameter direction, avoiding local stress concentration; If the impact energy exceeds the threshold, the pressure relief valve 20 on the detection airbag 3 automatically opens to release gas, preventing the detection airbag 3 from bursting. At the same time, the remaining impact is absorbed through the damping buffer part (damper 17, buffer spring 18) to avoid damage to the rigid structure; S4. Automatic reset and multiple anti-collision: After the impact ends, the return spring 9 releases the elastic potential energy, pushing the rotating sleeve 5 and the cross 6 to reset, driving the horizontal connecting rod 8 and the annular tube body 1 to restore their initial shapes; the elastic material of the elastic tube 2 rebounds synchronously, enabling the device to quickly restore its protective ability and withstand multiple impacts; S5. Intelligent monitoring and warning: The monitoring camera 21 collects video images in real time, and the auxiliary radar 22 scans and detects the target distance and speed. The data is wirelessly transmitted to the bridge management platform; the pressure sensor of the detection airbag 3 synchronously uploads the impact intensity and position information; When the system recognizes an impact, it automatically triggers the warning light 23 to flash and sends an alarm signal to the management personnel; if the impact causes the device to displace beyond the threshold, the water flow guiding part (guide sleeve 26, horizontal guide plate 28) on the anchor post 24 reduces the impact by guiding the water flow, and cooperates with the counterweight 29 to maintain the stability of the device.

[0037] S6. Adaptability to water environment: The double floating annular tube 25 automatically adjusts the height of the device as the water level rises and falls, ensuring that the annular tube body 1 is always in an effective protective position; the multi-axis rotation design of the movable connection structure allows the device to swing slightly under the impact of water flow, avoiding structural damage caused by rigid connection; The guide sleeve 26 drives the vertical guide plate 27 and the horizontal guide plate 28 to rotate with the water flow. The axis of the horizontal guide plate 28 is perpendicular to the water flow direction, which can disperse the water flow impact force and reduce the flow-around resistance, improving the stability of the device in rapids or tidal environments.

[0038] In summary, the present invention adopts a prefabricated design, which is convenient for factory prefabrication, on-site rapid installation and later maintenance, shortens the construction period, and reduces the impact on water area traffic; the six movable connection structures can be flexibly assembled to adapt to piers or banks of different shapes and scales, with strong versatility; the cross-over stacking of the elliptical elastic tubes 2 in combination with the internal support structure significantly improves the impact energy absorption and buffering effects and effectively disperses the impact force; the design of the reset spring 9 in the internal support structure enables automatic restoration to the original state after collision, realizing the ability of multiple anti-collisions; the detection airbags 3 are distributed outside the ring body, which can absorb energy and monitor the impact position and intensity in real time, and the pressure relief valve 20 prevents extreme damage; it reduces pier damage and maintenance costs, extends the service life of the bridge, and saves social resources.

[0039] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0040] The above are only the preferred embodiments of the present invention, and do not impose any formal restrictions on the present invention. Although the present invention has been disclosed as above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An assembled anti-collision device for bridge piers in water areas, comprising an annular pipe body (1), characterized in that, An inner support structure is provided inside the annular pipe body (1), a monitoring structure is provided on the inner support structure, a floating and stabilizing structure is provided at the lower end of the inner support structure, an elastic pipe (2) is provided inside the annular pipe body (1), the elastic pipe (2) is an oval ring body, the elastic pipes (2) are cross-stacked inside the annular pipe body (1), a detection airbag (3) is fixedly installed outside the annular pipe body (1), and six movable connection structures are installed outside the annular pipe body (1).

2. The prefabricated anti-collision device for water area bridge piers according to claim 1, characterized in that, The inner support structure includes a column (4), a rotating sleeve (5) is rotatably installed outside the column (4), a cross (6) is installed on the rotating sleeve (5), an inner support frame (7) is installed inside the annular pipe body (1), there are four groups of the inner support frames (7) in total, a horizontal connecting rod (8) is rotatably installed on the four groups of the inner support frames (7), the other end of the horizontal connecting rod (8) is rotatably connected to the outer end of the cross (6), a return spring (9) is connected between the rotating sleeve (5) and the inner side wall surface of the annular pipe body (1), the return spring (9) is in a compressed state, and a waterproof pipe (10) is arranged outside the return spring (9).

3. The prefabricated anti-collision device for water area bridge piers according to claim 2, wherein, The movable connection structure includes a connection end plate (11), an outer support frame (12) is fixedly installed outside the annular pipe body (1), a pitching shaft (13) is rotatably installed on the outer support frame (12), a pitching connecting rod (14) is rotatably installed on the pitching shaft (13), the other end of the pitching connecting rod (14) is rotatably connected to a pitching swing rod (15), the other end of the pitching swing rod (15) is rotatably connected to a lining plate (16), the lining plate (16) and the connection end plate (11) are rotatably connected, and a damping and buffering part is connected between the lining plate (16) and the pitching shaft (13).

4. The prefabricated anti-collision device for a water area pier according to claim 3, characterized in that, The damping and buffering part includes a damper (17), the damper (17) is fixedly installed on the pitching shaft (13), the telescopic end of the damper (17) is connected to the inner end face of the lining plate (16), a buffer spring (18) is sleeved outside the damper (17), and a waterproof sliding sleeve (19) is sleeved outside the buffer spring (18).

5. The prefabricated anti-collision device for water area bridge piers according to claim 4, characterized in that, The detection airbag (3) is a round-headed cylindrical inflatable flexible sleeve, the number of the detection airbags (3) is twelve, the detection airbags (3) are evenly distributed at the outer end of the annular pipe body (1), and a pressure relief valve (20) is arranged on the detection airbag (3).

6. The assembled anti-collision device for a water area pier according to claim 5, characterized in that, The monitoring structure includes a monitoring camera (21), the monitoring camera (21) is fixedly installed at the upper end of the column (4), and an auxiliary radar (22) and a warning light (23) are fixedly installed on the column (4).

7. The assembled anti-collision device for a water area pier according to claim 6, characterized in that, The floating and stabilizing structure includes an anchoring column (24) and a floating annular pipe (25), the anchoring column (24) is fixedly installed at the lower end of the column (4), a counterweight (29) is arranged at the lower end of the anchoring column (24), a water flow guiding part is arranged on the anchoring column (24), the number of the floating annular pipes (25) is two, and the two floating annular pipes (25) are respectively fixedly installed at the inner circle and the outer circle of the lower end face of the annular pipe body (1).

8. The assembled anti-collision device for bridge piers in water area according to claim 7, characterized in that, The water flow guiding part includes a guiding sleeve (26), the guiding sleeve (26) is rotatably sleeved outside the anchoring column (24), a pair of vertical guiding plates (27) are fixedly installed on the guiding sleeve (26), and a pair of horizontal guiding plates (28) are rotatably installed on the guiding sleeve (26).

9. The assembled anti-collision device for a pier in water according to claim 8, characterized in that, The rotation axis of the horizontal guiding plate (28) is perpendicular to the rotation axis of the guiding sleeve (26).

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