A bridge anti-ship collision device and anti-ship collision system with multi-path energy dissipation

Abstract

The invention discloses a bridge ship collision prevention device with multi-path energy dissipation, comprising a composite energy dissipation rotating barrel and a fixing mechanism. The composite energy dissipation rotating barrel comprises an inner barrel, a honeycomb layer and a corrugated outer shell. After being impacted by an external force, the corrugated outer shell on the surface of the composite energy dissipation rotating barrel can rapidly decompose the external force along the tangent and normal directions of the impact surface, and make the composite energy dissipation rotating barrel stably rotate, so as to achieve the purpose of making the ship deviate from the impact direction; due to the impact of the external force, the corrugated outer shell and the honeycomb layer are deformed by force, and at the same time absorb part of the impact energy; a pressure relief port and a pressure relief valve are provided on the inner barrel, when the pressurized space of the inner barrel is reduced and the internal pressure is increased, and the pressure reaches the threshold value of the pressure relief valve, the liquid in the composite energy dissipation rotating barrel is ejected from the pressure relief valve; the hydraulic damper of the fixing mechanism buffers the remaining impact force, realizes the conversion of the collision energy into the elastic potential energy, internal energy, self-kinetic energy, kinetic energy of the sprayed water and thermal energy of the damper of the deformation of the composite energy dissipation rotating barrel, so as to achieve the purpose of multi-path energy dissipation collision prevention.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge ship collision prevention, and in particular relates to a bridge ship collision prevention device and a ship collision prevention system with multi-path energy dissipation. Background Art

[0002] Bridge ship collision prevention has always been an existing problem at home and abroad and an engineering problem that bridges under construction have long faced. With the rapid development of my country's infrastructure, the number of cross-river bridges is increasing. At the same time, the tonnage and frequency of shipping ships are continuing to increase, and the probability of ships hitting bridge piers is increasing, which has led to more and more catastrophic accidents in which bridges are damaged or even collapsed due to ship collisions. Once a collision accident occurs, it usually causes serious economic losses and adverse social impacts.

[0003] For a long time, passive anti-collision facilities have been accustomed to using steel structures, which have problems such as heavy weight and easy corrosion. In addition, the bridge anti-collision devices used in the past mostly convert the kinetic energy of ship collision into the structural internal energy of the device. The energy dissipation efficiency during the collision is low and the path is single, which has limited protection for bridge structures and ships. In addition, it is relatively complex and costly in construction and maintenance.

[0004] The existing published patent document CN114032757A-A bridge anti-collision device based on bridge safety performance, including an anti-collision device, the anti-collision device is installed at the bottom end of the bridge pier, the anti-collision device includes a fixed cylinder, multiple groups of arc-shaped plates are installed on the outer circumference of the fixed cylinder, and multiple groups of rotating drums are installed on the sides of the multiple groups of arc-shaped plates, and a buoy is set on the outer side of the bottom end of the fixed cylinder, and the top of the buoy is connected to the bottom end of the multiple groups of arc-shaped plates. This bridge anti-collision device based on bridge safety performance can reduce the impact force on the bridge pier through the rotation of the rotating drum and the contraction of the spring when a ship accidentally collides with it, through the use of the rotating drum installed on the outer side of the arc-shaped plate and the mounting seat connected to the top of the rotating drum.

[0005] The patented anti-collision device converts the kinetic energy of the ship's impact into the rotational potential energy of the drum and the contraction kinetic energy of the spring, thereby reducing the impact force. However, the overall structure is relatively complex, and the drum must be installed with a fixed cylinder, an arc plate, a T-bar, etc. The construction period is long and it is not convenient to disassemble and repair. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a bridge anti-ship collision device and an anti-ship collision bridge with multi-path energy dissipation.

[0007] The technical solution of the present invention is:

[0008] The present invention discloses a multi-path energy dissipation bridge ship collision prevention device, which is installed on a bridge pier and comprises a composite energy-absorbing rotating barrel and a fixing mechanism, wherein the composite energy-absorbing rotating barrel is detachably connected to the fixing mechanism, and the composite energy-absorbing rotating barrel is driven to rotate on the fixing mechanism by an external force, and the fixing mechanism is fixedly connected to the bridge pier;

[0009] The composite energy-consuming rotary barrel comprises an inner barrel, a honeycomb layer and a corrugated outer shell, wherein the honeycomb layer is arranged on the periphery of the inner barrel, the corrugated outer shell is arranged on the periphery of the honeycomb layer, and the honeycomb layer is located between the outer wall of the inner barrel and the corrugated outer shell;

[0010] At least one pressure relief port and at least one pressure relief valve are provided on the inner barrel, and the pressure relief valve is detachably mounted on the pressure relief port;

[0011] The fixing mechanism includes a rotating shaft, a plurality of hydraulic dampers, at least one limiting guide rail and a plurality of connecting parts. The rotating shaft is arranged on the central axis of the composite energy-absorbing rotating barrel. One end of the hydraulic damper is connected to the rotating shaft, and the other end of the hydraulic damper is connected to the connecting part. The connecting part can be detachably installed on the limiting guide rail, and the connecting part moves along the limiting guide rail. The limiting guide rail is fixed on the bridge pier.

[0012] Furthermore, a convex ring is provided on the pressure relief port, and a primary groove and a secondary groove arranged in parallel are provided inside the pressure relief valve, the primary groove is located below the secondary groove, and the primary groove or the secondary groove is clamped on the convex ring.

[0013] Furthermore, energy-absorbing and anti-collision asphalt is filled between the honeycomb layer and the corrugated outer shell, the composite energy-absorbing rotary barrel is a modified PE material, and the corrugated outer shell is composited with ultra-high molecular weight polyethylene.

[0014] Furthermore, every two hydraulic dampers form a V-shaped hydraulic damping mechanism, and the V-shaped hydraulic damping mechanism is provided with a first connecting head, a second connecting head and a third connecting head, the first connecting head and the second connecting head are respectively fixedly connected to the connecting piece, and the third connecting head is installed on the rotating shaft.

[0015] Furthermore, the connecting member includes a socket, a plurality of through holes, a connecting ear and a plurality of bolts. The socket is arranged opposite to the connecting ear, the socket moves along the limiting guide rail, one end of the hydraulic damper is fixed on the connecting ear, the through hole is arranged on the side of the socket, and the connecting member is fixed to the limiting guide rail by passing the bolt through the through hole.

[0016] Furthermore, the limiting guide rail is provided with a plurality of circular holes and a plurality of bolts, and the bolts are inserted into the circular holes and drilled into the bridge pier.

[0017] Furthermore, a cylindrical through hole is provided on the central axis of the composite energy-absorbing rotary barrel, and the rotary shaft is installed in the cylindrical through hole.

[0018] The present invention also discloses a multi-path energy dissipation anti-ship collision system, comprising a plurality of the above-mentioned multi-path energy dissipation bridge anti-ship collision devices, wherein the spacing between the multi-path energy dissipation bridge anti-ship collision devices is no more than 20 cm.

[0019] The beneficial effects of the present invention are:

[0020] (1) A modular composite energy-absorbing rotating barrel and a fixing mechanism are designed. The composite energy-absorbing rotating barrel can be detachably connected to the fixing mechanism. The composite energy-absorbing rotating barrel includes an inner barrel, a honeycomb layer and a corrugated outer shell. When the corrugated outer shell is hit by an external force, the external force can be quickly decomposed along the tangent and normal directions of the impact surface, and the composite energy-absorbing rotating barrel can be stably rotated, so as to achieve the purpose of making the ship deviate from the impact direction; due to the impact of the external force, the corrugated outer shell is deformed by force and absorbs and releases the impact force, and the honeycomb layer is deformed by force at the same time to absorb part of the impact energy; a pressure relief port and a pressure relief valve are provided on the inner barrel. When the pressurized space of the inner barrel is reduced and the internal pressure increases, the pressure reaches the threshold of the pressure relief valve, and the liquid or gas in the composite energy-absorbing rotating barrel is ejected from the pressure relief valve; the hydraulic damper of the fixing mechanism buffers the remaining impact force, so as to realize the conversion of the collision energy into the elastic potential energy, internal energy, self-kinetic energy, kinetic energy of the sprayed water and thermal energy of the damper of the deformation of the composite energy-absorbing rotating barrel, so as to achieve the purpose of multi-path energy dissipation and collision prevention.

[0021] (2) After a general collision, the deformation of the composite energy-absorbing rotating barrel can be restored. Water can be re-injected into the pressure relief port of the composite energy-absorbing rotating barrel. After the pressure relief valve is installed, it can be put into operation again, thereby saving investment costs; for components damaged by collision, they can be directly replaced, or in the later maintenance of the anti-collision device, only targeted replacement can be carried out, thereby reducing the later maintenance cost, and the installation is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a bridge ship collision prevention device with multi-path energy dissipation according to the present invention;

[0023] Figure 2 It is a structural schematic diagram of a bridge ship collision prevention device with multi-path energy dissipation after the pressure relief valve is removed from the composite energy dissipation rotary barrel of the present invention;

[0024] Figure 3 It is a schematic cross-sectional structure diagram of a composite energy-dissipating rotating barrel of a bridge ship-collision protection device with multi-path energy dissipation of the present invention;

[0025] Figure 4 It is a schematic structural diagram of a pressure relief port and a pressure relief valve of a bridge ship collision prevention device with multi-path energy dissipation according to the present invention;

[0026] Figure 5 This is a schematic structural diagram of a bridge ship collision prevention device with multi-path energy dissipation of the present invention, omitting the composite energy dissipation rotating barrel;

[0027] Figure 6 It is a schematic diagram of the combined structure of a connector and a hydraulic damper of a bridge anti-ship collision device with multi-path energy dissipation according to the present invention;

[0028] Figure 7 The figure is a schematic structural diagram of a ship collision prevention system with multi-path energy dissipation according to the present invention.

[0029] Figure symbols: S, bridge pier, 1, composite energy-absorbing rotating barrel, 11, inner barrel, 111, pressure relief port, 1111, convex ring, 12, honeycomb layer, 13, wavy shell, 14, cylindrical through hole, 15, pressure relief valve, 151, primary groove, 152, secondary groove, 2, fixing mechanism, 21, rotating shaft, 22, hydraulic damper, 221, first connecting head, 222, second connecting head, 223, third connecting head, 23, limiting guide rail, 231, round hole, 24, connecting piece, 241, socket, 242, through hole, 243, connecting ear, 25, bolt. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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.

[0031] It should be noted that when an element is referred to as being "provided on", "located on" or "installed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "penetrating into" or "arranged on" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the orientations or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “central axis”, and “vertical” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, in the description of the present invention, “several” means two or more than two, unless otherwise clearly and specifically defined.

[0034] Example 1

[0035] Please refer to Figure 1-Figure 6 The present invention provides a multi-path energy dissipation bridge ship collision prevention device, which is installed on a bridge pier S and includes a composite energy-absorbing rotating barrel 1 and a fixing mechanism 2. The composite energy-absorbing rotating barrel 1 is detachably connected to the fixing mechanism 2, and the composite energy-absorbing rotating barrel 1 is driven by an external force to rotate on the fixing mechanism 2. The fixing mechanism 2 is fixedly connected to the bridge pier S;

[0036] The composite energy-consuming rotary barrel 1 comprises an inner barrel 11, a honeycomb layer 12 and a corrugated outer shell 13, wherein the honeycomb layer 12 is arranged on the periphery of the inner barrel 11, and the corrugated outer shell 13 is arranged on the periphery of the honeycomb layer 12, and the honeycomb layer 12 is located between the outer wall of the inner barrel 11 and the corrugated outer shell 13; the corrugated outer shell 13 can also be understood as a petal shape, such as Figure 1 As shown, the petals are an even number of petals, 8 in total; after being impacted by an external force, the wavy shell 13 on the surface of the composite energy-absorbing rotating barrel 1 can quickly decompose the external force along the tangent and normal directions of the impact surface, and make the composite energy-absorbing rotating barrel 1 rotate stably, so as to achieve the purpose of making the ship deviate from the impact direction; due to the impact of the external force, the wavy shell 13 is deformed by force and absorbs and releases the impact force, and the honeycomb layer 12 is deformed by force at the same time to absorb part of the impact energy;

[0037] Specifically, the wavy shell 13 is deformed by force and absorbs and releases the impact force, which can be done by absorbing and releasing the impact force through the energy-absorbing and anti-collision asphalt filled between the honeycomb layer 12 and the wavy shell 13. The energy-absorbing and anti-collision asphalt can be replaced by other buffering and energy-absorbing materials, such as EVA material (ethylene-vinyl acetate copolymer), rubber, latex, sponge, ACF (artificial cartilage bionic material), EPS (polystyrene foam), etc.

[0038] The composite energy-absorbing rotary barrel 1 is made of modified PE material, and the corrugated shell 13 is compounded with ultra-high molecular weight polyethylene; when the composite energy-absorbing rotary barrel 1 is manufactured, the corrugated shell 13 is filled with energy-absorbing and anti-collision asphalt and then sealed to complete the overall prefabrication of the composite energy-absorbing rotary barrel to ensure its integrity.

[0039] Two pressure relief ports 111 and two pressure relief valves 15 are provided on the inner barrel 11, and the pressure relief valves 15 are detachably mounted on the pressure relief ports 111. When impacted, the pressurized space of the inner barrel 11 is reduced and the internal pressure is increased. When the pressure reaches the pressure relief valve threshold, the liquid or gas in the composite energy-consuming rotating barrel 1 is ejected from the pressure relief valve 15; the injection of liquid into the inner barrel 11 can create conditions for converting the energy of the collision into the kinetic energy of water ejected from the pressure relief ports 111.

[0040] Furthermore, the pressure relief port 111 is provided with a convex ring 1111, and the pressure relief valve 15 is provided with a primary groove 151 and a secondary groove 152 arranged in parallel, and the primary groove 151 or the secondary groove 152 is clamped on the convex ring 1111. The pressure relief valve 15 is made of corrosion-resistant stainless steel, and the diameter of the pressure relief valve 15 is slightly larger than the diameter of the pressure relief port 111. Figure 4 , the primary groove 151 is located below the secondary groove 152. When the convex ring 1111 is stuck in the secondary groove 152, the pressure released by the inner barrel 11 presses against the pressure relief valve 15, and the pressure relief valve 15 is displaced, causing the convex ring 1111 to be stuck in the primary groove 151, or directly breaking the pressure relief valve 15, thereby automatically adjusting the pressure. It can be understood that the pressure relief valve 15 is used to adjust the pressure released by the inner barrel 11, and when the release pressure is not reached, it is ensured that it has sufficient strength to maintain pressure stability.

[0041] In order to prevent the pressure relief valve 15 from falling directly into the river, a ring (not shown) is added to the pressure relief valve 15. The ring is clamped under the convex ring 1111. When the pressure released by the inner barrel 11 is too large, the pressure relief valve 15 will directly burst open, and the ring can prevent the pressure relief valve 15 from bouncing into the river.

[0042] Preferably, the pressure relief valve 15 can adopt an automatic water drain valve sold on the market. The specific structure can refer to the existing public patent document 201620755315.1 automatic water drain valve, so there is no need to worry about the pressure relief valve being ejected out of the pressure relief port by the pressure released from the inner barrel, and the air and water are automatically exhausted. Maintenance personnel can disassemble the pressure relief valve 15 to replenish water during regular inspections.

[0043] Therefore, the impact force of the ship needs to pass through the wavy outer shell 13, the energy-absorbing and anti-collision asphalt, the honeycomb layer 12, the inner barrel 11 and the gas or liquid in the inner barrel 11, and undergo energy conversion step by step to realize the conversion of the collision energy into the elastic potential energy, internal energy, self-kinetic energy and kinetic energy of the sprayed water of the deformation of the composite energy-absorbing rotary barrel 1, so as to achieve the purpose of multi-path energy dissipation and anti-collision.

[0044] Furthermore, the fixing mechanism 2 includes a rotating shaft 21, four hydraulic dampers 22, two limiting guide rails 23 and four connecting pieces 24; a cylindrical through hole 14 is provided on the central axis of the composite energy-absorbing rotary barrel 1, and the rotating shaft 21 is installed in the cylindrical through hole 14; four circular holes 231 and two bolts 25 are provided on the limiting guide rail 23, and the limiting guide rail 23 is made of high-strength stainless steel, and its cross-section is I-shaped, and the bolts 25 penetrate into the circular holes 231 and drill into the bridge pier S, so that the limiting guide rail 23 is arranged around the bridge pier S and perpendicular to the water. The plane, generally speaking, two bolts 25 can be used to fix the limiting guide rail 23, but for the sake of stability, each round hole 231 can be screwed into a bolt 25; the connecting member 24 is made of alloy steel, and the connecting member 24 includes a holder 241, two through holes 242, a connecting ear 243 and two bolts 25, the holder 241 is arranged opposite to the connecting ear 243, the holder 241 matches the I-shape of the limiting guide rail 23, and the holder 241 moves along the limiting guide rail 23, and the two through holes 242 are arranged on both sides of the holder 241, through The bolt 25 is inserted into the through hole 242 to fix the connector 24 on the limiting guide rail 23; the hydraulic damper 22 is made of high-strength stainless steel, and the relevant parameters can be adjusted according to the actual engineering situation. Every two hydraulic dampers 22 form a group of V-shaped hydraulic damping mechanisms. The composite energy-consuming rotary barrel 1 is provided with two hydraulic damping mechanisms. The V-shaped hydraulic damping mechanism is provided with a first connector 221, a second connector 222 and a third connector 223. The first connector 221 and the second connector 222 are respectively fixedly connected to the connecting ear 243, and the third connector The head 223 is installed on the rotating shaft 21. Specifically, the first connecting head 221 and the second connecting head 222 are fixed on the connecting ears 243 of different limiting guide rails 23. The first connecting head 221 is fixed on the connecting ear 243 of the connecting piece 24 of the limiting guide rail 23 on the left side of the composite energy-absorbing rotating barrel 1, and the second connecting head 222 is fixed on the connecting ear 243 of the connecting piece 24 of the limiting guide rail 23 on the right side of the composite energy-absorbing rotating barrel 1. The V-shaped hydraulic damping mechanism adopts the triangle stability principle and is not easily destroyed. The above-mentioned bolts 25 are all high-strength bolts made of alloy steel.

[0045] Preferably, the above-mentioned rotating shafts 21 can be two, fixed at both ends of the central axis of the composite energy-consuming rotating barrel 1, one head and one tail, to clamp the composite energy-consuming rotating barrel 1, without opening a cylindrical through hole on the composite energy-consuming rotating barrel.

[0046] The hydraulic damper 22 can buffer the remaining impact force and convert the collision energy into damper heat energy.

[0047] The reason for designing the limit guide rail 23 and the connecting piece 24 is that during the installation process, different sizes of composite energy-consuming rotary barrels 1 can be used according to needs, so the position of the connecting piece 24 needs to be adjusted, or the horizontal height of the composite energy-consuming rotary barrel 1 can be adjusted by moving the connecting piece 24 up and down on the limit guide rail 23; in addition, the length of the limit guide rail 23 can be produced in matching manner according to engineering requirements.

[0048] Example 2

[0049] The difference from Example 1 is that the fixing mechanism 2 includes a rotating shaft 21, two hydraulic dampers 22, a limiting guide rail 23 and two connecting parts 24; the rotating shaft 21 is installed in the cylindrical through hole 14 of the middle axis of the composite energy-absorbing rotating barrel 1, and the hydraulic dampers 22 are located at both ends of the composite energy-absorbing rotating barrel 1, one end of each hydraulic damper 22 is connected to the rotating shaft 21, and the other end of the hydraulic damper 22 is connected to a connecting part 24.

[0050] Example 3

[0051] The difference from Embodiment 1 and Embodiment 2 is that the fixing mechanism 2 is not limited to the rotating shaft 21 , the hydraulic damper 22 , the limiting guide rail 23 and the connecting member 24 .

[0052] The fixing mechanism 2 is another structure, which includes a mounting seat and a clamping column arranged thereon. Mounting grooves are provided at both ends of the central axis of the composite energy-consuming rotary barrel. The clamping column and the mounting groove are fixed by threaded rotation, which is similar to the structure of a light bulb and a lamp holder in existing life.

[0053] Reference Figure 7 The present invention also discloses a multi-path energy dissipation anti-ship collision system, comprising a plurality of the above-mentioned multi-path energy dissipation bridge anti-ship collision devices, wherein the plurality of multi-path energy dissipation bridge anti-ship collision devices surround the bridge pier S, and the net spacing between the multi-path energy dissipation bridge anti-ship collision devices is usually 20 cm, and it is strictly forbidden to have a too wide spacing to ensure that there is enough rotation space after being hit by external force, and to ensure that the colliding ship deviates from the collision direction and the bridge pier after the collision.

[0054] The multi-path energy dissipation bridge ship collision prevention device of the present invention can meet the protection installation requirements under different working conditions of different bridge pier shapes without the need for separate design for different bridge pier shapes. It has simple installation and maintenance, wide applicability and good economy.

[0055] In actual projects, reflective markings can be affixed to the exterior of the multi-path energy dissipation bridge anti-ship collision device of the present invention to alert passing ships; the size, quantity and spacing of the device need to be determined based on the actual project conditions and requirements.

[0056] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A bridge ship collision prevention device with multi-path energy dissipation, installed on a bridge pier, characterized in that: It comprises a composite energy-absorbing rotating barrel (1) and a fixing mechanism (2), wherein the composite energy-absorbing rotating barrel (1) is detachably connected to the fixing mechanism (2), and the composite energy-absorbing rotating barrel (1) is driven by an external force to rotate on the fixing mechanism (2), and the fixing mechanism (2) is fixedly connected to a bridge pier; The composite energy-absorbing rotary barrel (1) comprises an inner barrel (11), a honeycomb layer (12) and a corrugated outer shell (13); the honeycomb layer (12) is arranged on the periphery of the inner barrel (11); the corrugated outer shell (13) is arranged on the periphery of the honeycomb layer (12); and the honeycomb layer (12) is located between the outer wall of the inner barrel (11) and the corrugated outer shell (13); At least one pressure relief port (111) and at least one pressure relief valve (15) are provided on the inner barrel (11), and the pressure relief valve (15) is detachably mounted on the pressure relief port (111); The fixing mechanism (2) comprises a rotating shaft (21), a plurality of hydraulic dampers (22), at least one limiting guide rail (23) and a plurality of connecting members (24); the rotating shaft (21) is arranged on the central axis of the composite energy-absorbing rotating barrel (1); one end of the hydraulic damper (22) is connected to the rotating shaft (21); the other end of the hydraulic damper (22) is connected to the connecting member (24); the connecting member (24) is detachably mounted on the limiting guide rail (23); the connecting member (24) moves along the limiting guide rail (23); and the limiting guide rail (23) is fixed on the bridge pier; The pressure relief port (111) is provided with a convex ring (1111), and the pressure relief valve (15) is provided with a primary groove (151) and a secondary groove (152) arranged in parallel, the primary groove (151) is located below the secondary groove (152), and the primary groove (151) or the secondary groove (152) is clamped on the convex ring (1111); The connecting member (24) comprises a holder (241), a plurality of through holes (242), a connecting ear (243) and a plurality of bolts (25); the holder (241) and the connecting ear (243) are arranged opposite to each other; the holder (241) moves along the limiting guide rail (23); one end of the hydraulic damper (22) is fixed to the connecting ear (243); the through hole (242) is arranged on a side of the holder (241); and the connecting member (24) is fixed to the limiting guide rail (23) by means of bolts (25) penetrating the through hole (242).

2. The multi-path energy dissipation bridge anti-ship collision device according to claim 1, characterized in that: Energy-absorbing and anti-collision asphalt is filled between the honeycomb layer (12) and the corrugated outer shell (13); the composite energy-absorbing rotary barrel (1) is made of modified PE material; and the corrugated outer shell (13) is composited with ultra-high molecular weight polyethylene.

3. The multi-path energy dissipation bridge anti-ship collision device according to claim 1, characterized in that: Every two hydraulic dampers (22) form a group of V-shaped hydraulic damping mechanisms, wherein the V-shaped hydraulic damping mechanisms are provided with a first connecting head (221), a second connecting head (222) and a third connecting head (223), wherein the first connecting head (221) and the second connecting head (222) are respectively fixedly connected to the connecting member (24), and the third connecting head (223) is mounted on the rotating shaft (21).

4. The multi-path energy dissipation bridge anti-ship collision device according to claim 1, characterized in that: The connecting member (24) comprises a holder (241), a plurality of through holes (242), a connecting ear (243) and a plurality of bolts (25); the holder (241) and the connecting ear (243) are arranged opposite to each other; the holder (241) moves along the limiting guide rail (23); one end of the hydraulic damper (22) is fixed to the connecting ear (243); the through hole (242) is arranged on a side of the holder (241); and the connecting member (24) is fixed to the limiting guide rail (23) by means of bolts (25) penetrating the through hole (242).

5. The multi-path energy dissipation bridge ship collision prevention device according to claim 4, characterized in that: The limiting guide rail (23) is provided with a plurality of circular holes (231) and a plurality of bolts (25), and the bolts (25) are inserted into the circular holes (231) and drilled into the bridge pier.

6. The multi-path energy dissipation bridge anti-ship collision device according to claim 5, characterized in that: A cylindrical through hole (14) is provided on the central axis of the composite energy-consuming rotary barrel (1), and a rotary shaft (21) is installed in the cylindrical through hole (14).

7. A multi-path energy dissipation anti-ship collision system, characterized in that: It comprises a plurality of bridge anti-ship collision devices with multi-path energy dissipation as described in any one of claims 1 to 6, wherein the spacing between the bridge anti-ship collision devices with multi-path energy dissipation is not greater than 20 cm.

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