A protection device for safe berthing of a ship at a wharf

Abstract

The present application relates to new energy transportation technical field, disclose a kind of for wharf ship safety berthing protection device, connect to the face of ship of approach of approach wharf, including the base of being fixedly connected to the face of ship of approach of approach wharf along vertical side, the opening of base is slidably connected with the anti-collision box for contacting ship body, further include the damping assembly connected between base and anti-collision box, damping assembly includes: buffer component, multiple energy dissipating parts, buffer component includes multiple horizontally arranged annular air bag and the first spring in the middle part of air bag, multiple energy dissipating parts include multiple longitudinally fixedly connected to the seal cylinder of base, multiple pistons connected in each seal cylinder one by one, multiple slide rods, the second spring connected with each slide rod and puller, each seal cylinder is sealedly communicated by one slide rod above, and each seal cylinder is sealedly communicated by one slide rod below.The present application can play a protective effect to the ship body of transport ship, reduce its ship body damaged and the risk of liquid hydrogen leakage.

Description

Technical Field

[0001] This invention relates to the field of new energy transportation technology, and in particular to a protective device for the safe berthing of ships at a dock. Background Technology

[0002] Liquid hydrogen is an important carrier and component of new energy. By liquefying liquid hydrogen at low temperature (-253℃), its volume is greatly reduced, which solves the problem of low storage and transportation efficiency of gaseous hydrogen. This allows it to be used more efficiently in transportation, such as hydrogen-powered vehicles and hydrogen-powered aircraft, as well as in power generation and industry. It has become a key link connecting renewable energy with end applications. In particular, liquid hydrogen formed by the liquefaction of green hydrogen fully meets the low-carbon, environmentally friendly and sustainable characteristics of new energy.

[0003] Because liquid hydrogen energy is flammable and explosive, and has high requirements for storage temperature and explosion-proof safety, specialized ships are usually chosen for its transportation. When liquid hydrogen transport ships dock, the ship's attitude and stability are of high importance. Therefore, protective devices are usually set up at the dock to mitigate the impact intensity of the transport ship. These protective devices typically include multiple berthing blocks, specifically, multiple berthing blocks are arranged laterally at equal intervals on the foundation of the water in front of the dock, used to deal with larger transport ships. The top of the berthing blocks extends out of the water to block the sides of the ship. As the transport ship approaches the dock, the traction cables at the bow and stern are connected to the winch pulling equipment on the dock, and the entire ship is slowly pulled laterally towards the berthing blocks. At this time, the contact between the berthing block's facing surface and the ship completes the blocking. Traditional berthing blocks are usually made of reinforced concrete, and their facing surfaces are usually equipped with a soft rubber layer or use tires to minimize the strong impact of the transport ship's lateral movement on the dock.

[0004] Although the hull of the transport ship is reinforced with an outer anti-collision layer, due to the large size and weight of the liquid hydrogen transport ship, in windy weather, when the wind direction is the same as the direction in which the transport ship is towed to the dock, the inertial force of the transport ship is greater, which is accompanied by a greater impact force. When the transport ship hits the dock with a greater impact force, it will generate a greater vibration force. Traditional structures such as rubber layers are not able to quickly buffer and dissipate the kinetic energy of this vibration force, thus causing damage to both the hull of the transport ship and the dock. Moreover, the vibration force will also affect the structural stability of the liquid hydrogen transport tanks inside the ship, and the liquid hydrogen will also vibrate strongly, thereby increasing the risk of vaporization and explosion in the event of a liquid hydrogen leak. Summary of the Invention

[0005] This invention provides a protective device for the safe berthing of ships at docks, which can protect the hull of transport ships and reduce the risk of damage to the hull and liquid hydrogen leakage.

[0006] This invention provides a protective device for the safe berthing of ships at a dock. It connects to the ship-facing side of a berthing pier and includes a base for vertically fixing to one side of the ship-facing side of the berthing pier. A collision box for contacting the ship's hull is slidably connected to the opening of the base. The device also includes a vibration damping assembly connecting the base and the collision box. The vibration damping assembly includes a buffer component and multiple energy-dissipating components. The buffer component includes multiple horizontally arranged annular airbags and a first spring placed in the center of each airbag. One end of each airbag and the first spring is fixedly connected to the collision box, and the other end is connected to the base, for buffering the impact force transmitted from the ship's hull to the collision box. The multiple energy-dissipating components include multiple longitudinally fixed sealing cylinders to the base, multiple pistons connected to each sealing cylinder, multiple sliding rods, a second spring connected to each sliding rod, and a pulling component. Each upper sealing cylinder is sealed and connected through a sliding rod, and each lower sealing cylinder is sealed and connected through a sliding rod. The sliding rods are fixedly connected to their corresponding pistons. As the collision box slides towards the base, the pulling component simultaneously pulls the two sliding rods towards a mutually closer side.

[0007] Preferably, the pulling component includes: multiple first pulling ropes, multiple winches, a sliding plate, and a second pulling rope. One end of the first pulling rope is fixedly connected to the end of the slide rod exposed outside the sealing cylinder. The multiple winches are horizontally rotatably connected to the inner wall of the base through fixed rotating shafts. The other end of each first pulling rope is fixedly connected to the corresponding adjacent winch. As the winch rotates, the slide rod is pulled by the first pulling rope, so that the piston slides in the corresponding sealing cylinder. Each rotating shaft is fixedly connected to a toothed disc. There is a gap between the two toothed discs in the middle, and the other two adjacent toothed discs mesh with each other. The sliding plate is slidably connected to the middle of the base along the longitudinal direction. Both sides of the sliding plate are fixedly connected to toothed plates that mesh with the toothed discs on both sides. One end of the second pulling rope is fixedly connected to the top of the sliding plate, and the other end extends upward and passes through the base, is guided by a wheel, and is fixedly connected to the top of the anti-collision box.

[0008] Preferably, the pistons in the upper half of the base are placed at the top of the sealing cylinder, and the pistons in the lower half of the base are placed at the bottom of the sealing cylinder. Each second spring is respectively set in the sealing cylinder near the longitudinal center of the base. One end of the second spring is fixedly connected to the inner wall of the corresponding end of the sealing cylinder, and the other end is fixedly connected to the slide rod through the piston plate.

[0009] Preferably, the energy-consuming component has four sealing cylinders, with two sealing cylinders in the upper half and two in the lower half of the base. The two upper sealing cylinders and the two lower sealing cylinders are fixedly connected to each other by end plates, and the airbag is fixedly connected to the end plates to achieve connection with the base.

[0010] Preferably, the end plate has a groove along the longitudinal direction, and sliders are slidably connected to the upper and lower sides of the corresponding airbag in the groove. The ends of the two sliders near the anti-collision box are hinged to connecting rods that are inclined in opposite directions. The other ends of the connecting rods are hinged to the inner wall of the anti-collision box. The distance between the ends of the two connecting rods connected to the sliders on the same end plate is smaller than the distance between the ends of the two connecting rods connected to the anti-collision box. As the anti-collision box slides into the base, the two sliders compress the side wall of the corresponding airbag.

[0011] Preferably, the lower part of the base has a through-hole for seawater to be poured in.

[0012] Preferably, each sealed cylinder located in the lower half of the base has multiple water inlets at its lower end to allow seawater to enter. Each water inlet is located below the sea level. As the piston moves upward, it allows seawater to pass through each water inlet and be drawn into the corresponding sealed cylinder.

[0013] Preferably, each rotating shaft extends towards the end closest to the crash box, and multiple stirring blades are fixedly connected to its perimeter. Multiple steel wire ropes are fixedly connected to the lower end of the sliding plate, and the lower end of each steel wire rope extends out of the base. The lower end of the steel wire rope is fixedly connected to a water collection dish through a connecting rib. As the sliding plate moves upward, seawater can be pumped into the base through the water collection dish to raise the water level in the base.

[0014] Preferably, the upper opening of the water collection dish is larger than the through opening of the base, and the middle material of the water collection dish and the connecting rib is shape memory alloy steel, which can deform under external force so that the seawater stored in the water collection dish can be further injected into the base.

[0015] Preferably, the side of the crash box facing the ship is connected to a soft rubber layer.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: even in windy weather, and when the wind direction is consistent with the direction in which the transport ship is towed to the dock, the present invention can quickly and efficiently buffer and dissipate the large impact force generated by the transport ship, and also buffer and dissipate the vibration force generated after the collision, thereby reducing the damage to the hull of the transport ship and the dock, and playing a beneficial role in protecting important structures such as transport tanks inside the ship and the dock structure.

[0017] Based on strength requirements, the berth is connected to the foundation via anchoring rods to achieve stable reinforcement, enhancing the support strength at the impact point on the berth's facing side and its own strength. A base connected to the berth provides support and connection to the crash box, allowing it to slide horizontally along the base. Specifically, the opening of the crash box is opposite the opening of the base, and the crash box is smaller than the base, allowing it to slide relative to the base. A buffer component provides elastic support to the crash box. Specifically, multiple annular airbags are evenly distributed on the inner wall of the crash box, providing uniform cushioning after impact. These airbags are inflated internally and spring-loaded to cushion the impact of the impact. At the moment of impact with the hull, compression deformation occurs. As the anti-collision box continues to slide inward toward the base, the elastic potential energy of its airbags and the first spring releases a relative reaction force, thus buffering the impact force. Specifically, through the setting of energy-dissipating components, under the action of the pulling components, the anti-collision box slides horizontally toward the base, while simultaneously driving the corresponding sliding rod located in the sealed cylinder to slide toward a position closer to the center of the base. The sliding rod drives each piston to slide in the sealed cylinder. Since the inside of the sealed cylinder is in a sealed state, as the piston slides, the piston will compress the air in the sealed cylinder, utilizing the principle of air compression to achieve the effect of kinetic energy. Under the action of the energy-dissipating components, the kinetic energy of the impact force during the buffering process is consumed, thereby allowing the vibration force to be quickly eliminated. Attached Figure Description

[0018] Figure 1 This is a side view of the internal cross-sectional structure of a protective device for the safe berthing of ships at a dock, provided in an embodiment of the present invention.

[0019] Figure 2 This is a side view of the internal sectional structure of a protective device for the safe berthing of ships at a dock, provided in an embodiment of the present invention.

[0020] Figure 3 A front view endoscopic structure diagram of the base of a protective device for safe berthing of ships at a dock, provided in an embodiment of the present invention;

[0021] Figure 4 for Figure 3 A magnified view of part A in the middle;

[0022] Figure 5 for Figure 1 A magnified view of part B in the middle section;

[0023] Figure 6 for Figure 1 A magnified view of part C in the middle;

[0024] Figure 7 This is a schematic diagram of the deformed structure of a water collection dish of a protective device for the safe berthing of ships at a dock, provided in an embodiment of the present invention.

[0025] Figure 8 This is a front view schematic diagram of each toothed disc in a protective device for the safe berthing of ships at a dock, provided in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Mooring pier; 2. Base; 21. Through-hole; 3. Anti-collision box; 4. Buffer component; 41. Airbag; 42. First spring; 5. Energy-consuming component; 51. Sealing cylinder; 511. Water filling hole; 52. Piston; 53. Sliding rod; 54. Second spring; 55. Pulling component; 551. First pulling rope; 552. Winch; 553. Gear plate; 554. Sliding plate; 555. Gear plate; 556. Second pulling rope; 557. Rotating shaft; 6. End plate; 61. Slide groove; 62. Sliding block; 63. Connecting rod; 7. Stirring blade; 8. Steel wire rope; 9. Water collecting dish. Detailed Implementation

[0028] The following detailed description of a specific embodiment of the present invention is provided in conjunction with the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] refer to Figure 1 , Figure 2 and Figure 3This invention provides a protective device for the safe berthing of ships at a dock. It connects to the ship-facing side of a berthing pier 1 and includes a base 2 for vertically fixing to one side of the ship-facing side of the berthing pier 1. A collision box 3 for contacting the ship's hull is slidably connected to the opening of the base 2. The device also includes a vibration damping assembly connecting the base 2 and the collision box 3. The vibration damping assembly includes a buffer component 4 and multiple energy-dissipating components 5. The buffer component 4 includes multiple horizontally arranged annular airbags 41 and a first spring 42 placed in the middle of each airbag 41. One end of each airbag 41 and the first spring 42 is fixedly connected to the collision box 3, and the other end is connected to the base 2. To buffer the impact force transmitted from the hull to the anti-collision box 3, multiple energy-consuming components 5 include multiple sealing cylinders 51 longitudinally fixed to the base 2, multiple pistons 52 connected to each sealing cylinder 51, multiple sliding rods 53, a second spring 54 connected to each sliding rod 53, and a pulling member 55. Each upper sealing cylinder 51 is sealed and connected through a sliding rod 53, and each lower sealing cylinder 51 is sealed and connected through a sliding rod 53. The sliding rod 53 is fixedly connected to each corresponding piston 52. As the anti-collision box 3 slides toward the base 2, the pulling member 55 pulls the two sliding rods 53 to slide toward the side that is closer to each other.

[0031] In the above embodiments, even in windy weather, and when the wind direction is consistent with the direction in which the transport ship is towed to the dock 1, the present invention can quickly and efficiently buffer and dissipate the large impact force generated by the transport ship, and also buffer and dissipate the vibration force generated after the collision, thereby reducing the damage to the hull of the transport ship and the dock 1, and playing a beneficial role in protecting important structures such as the transport tanks inside the ship and the structure of the dock 1.

[0032] According to strength requirements, the lower part of the berth 1 is connected to the foundation through anchoring rods to achieve a stable reinforcement effect, improving the support strength at the impact point of the berth 1 and its own strength. The base 2 is connected to the berth 1 to support and connect the anti-collision box 3, allowing the anti-collision box 3 to slide horizontally along the base 2. Specifically, the opening of the anti-collision box 3 is opposite to the opening of the base 2, and the size of the anti-collision box 3 is smaller than that of the base 2, allowing it to slide relative to the base 2. The buffer component 4 provides elastic support for the anti-collision box 3. Specifically, multiple annular airbags 41 are evenly distributed on the inner wall of the anti-collision box 3, which can evenly buffer the impact after being subjected to force. The airbags 41 are inflated internally and the elastic force of the first spring 42 is applied to the anti-collision box 3 to withstand the impact of the ship's hull. At the moment of impact, compression deformation occurs. As the anti-collision box 3 continues to slide into the base 2, the elastic potential energy of its airbag 41 and the first spring 42 releases a relative reaction support force, thus buffering the impact force. Specifically, the energy-dissipating component 5, under the action of the pulling component 55, allows the anti-collision box 3 to slide horizontally into the base 2, while simultaneously driving the corresponding sliding rod 53 located in the sealing cylinder 51 to slide towards the middle of the base 2. The sliding rod 53 drives each piston 52 to slide in the sealed sealing cylinder 51. Since the inside of the sealing cylinder 51 is in a sealed state, as the piston 52 slides, the piston 52 will compress the air inside the sealing cylinder 51, utilizing the principle of air compression to achieve the effect of kinetic energy. Under the action of the energy-dissipating component 5, the kinetic energy of the impact force during the buffering process is consumed, thereby allowing the vibration force to be quickly eliminated.

[0033] Further, refer to Figure 3 , Figure 6 and Figure 8 The pulling component 55 includes: multiple first pulling ropes 551, multiple winches 552, a sliding plate 554, and a second pulling rope 556. One end of each first pulling rope 551 is fixedly connected to the end of the slide rod 53 exposed outside the sealing cylinder 51. The multiple winches 552 are horizontally rotatably connected to the inner wall of the base 2 via a fixed rotating shaft 557. The other end of each first pulling rope 551 is fixedly connected to the corresponding adjacent winch 552. As the winch 552 rotates, it pulls the slide rod 53 through the first pulling rope 551, causing the piston 52 to be in the corresponding sealing position. The cylinder 51 is sealed and slides, and each rotating shaft 557 is fixedly connected to a toothed disc 553. There is a gap between the two toothed discs 553 in the middle, and the other two adjacent toothed discs 553 mesh with each other. The sliding plate 554 is slidably connected to the middle of the base 2 along the longitudinal direction. Both sides of the plate are fixedly connected to toothed plates 555 that mesh with the toothed discs 553 on both sides. One end of the second traction rope 556 is fixedly connected to the top of the sliding plate 554, and the other end extends upward and passes through the base 2. After being guided by the wheel, it is fixedly connected to the top of the anti-collision box 3.

[0034] Specifically, the wheel is connected to the base 2 via a bracket. The wheel is located on the side close to the crash box 3. The top and bottom of the crash box 3 are both fixed with shelves. There is an opening between the shelves and the crash box 3 to avoid the thickness of the base 2. The end of the second traction rope 556 extends downward after passing over the wheel from above and is fixedly connected to the shelf on the top of the crash box 3.

[0035] In the above embodiments, the traction member 55 enables control of the sliding of multiple sliding rods 53. Specifically, as the anti-collision box 3 slides towards one side of the base 2, the sliding plate also slides towards the side closer to the pier 1, thereby driving the second traction rope 556 to move around the wheel, which in turn drives the sliding plate 554 and the toothed plate 555 to move upward. The toothed plate 555 meshes with the toothed discs 553 on both sides, causing the left toothed disc 553 to rotate counterclockwise and the right toothed disc 553 to rotate clockwise. Specifically, as shown... Figure 3 As shown, the first pull ropes 551 on the two meshing toothed discs 553 are symmetrically positioned to achieve the effect of synchronously pulling the slide rods 53 after the winch 552 rotates. In summary, this structure does not require a separate drive component; the anti-collision box 3 can achieve the effect of pulling each slide rod 53 to slide in conjunction when it is impacted.

[0036] Further, refer to Figure 3 and Figure 4 The pistons 52 in the upper half of the sealing cylinders 51 of the base 2 are all placed at the top of the sealing cylinders 51, and the pistons 52 in the lower half of the sealing cylinders 51 of the base 2 are placed at the bottom of the sealing cylinders 51. Each second spring 54 is respectively set in the sealing cylinders 51 near the longitudinal middle of the base 2. One end of the second spring 54 is fixedly connected to the inner wall of the corresponding end of the sealing cylinder 51, and the other end is fixedly connected to the slide rod 53 through the piston plate 52.

[0037] In the above embodiments, as the upper slide rods 53 slide downwards and the lower slide rods 53 slide upwards, the second springs 54 are all in a compressed state. The compression process of the second springs 54 achieves the buffering effect of kinetic energy and can also achieve the reset effect of each slide rod 53 and the corresponding piston 52.

[0038] Further, refer to Figure 3 The energy-consuming component 5 has four sealing cylinders 51. There are two sealing cylinders 51 in the upper half and two in the lower half of the base 2. The two upper sealing cylinders 51 and the two lower sealing cylinders 51 are fixedly connected to each other by end plates 6. The airbag 41 is fixedly connected to the end plate 6 to achieve connection with the base 2.

[0039] In the above embodiments, by limiting the number of sealing cylinders 51, the cost and energy consumption effect are optimal at this value. The end plate 6 can connect and support the airbag 41.

[0040] Further, refer to Figure 1 , Figure 2 and Figure 6 The end plate 6 has a longitudinal groove 61. Slider 62 is slidably connected to the upper and lower sides of the corresponding airbag 41 in the groove 61. The two sliders 62 are hinged to the ends of the two sliders 62 near the anti-collision box 3 and are inclined in opposite directions. The other end of the connecting rod 63 is hinged to the inner wall of the anti-collision box 3. The distance between the ends of the two connecting rods 63 connected to the slider 62 on the same end plate 6 is smaller than the distance between the ends of the two connecting rods 63 connected to the anti-collision box 3. As the anti-collision box 3 slides into the base 2, the two sliders 62 compress the side wall of the corresponding airbag 41.

[0041] In the above embodiments, through the provided slide groove 61 and slider 62, when the anti-collision box 3 slides towards the base 2, it drives the corresponding connecting rod 63 to deflect. The other end of the connecting rod 63 will drive the corresponding slider 62 to slide towards the side closer to the airbag 41, and generate a squeezing force on the airbag 41. As the outer sides of the airbag 41 are subjected to the squeezing force, the gas inside is subjected to a certain compression force, and thus flows towards the uncompressed area. At this time, the gas in the airbag 41 will rush into the side closer to the anti-collision box 3. Therefore, the airbag 41 on the side closer to the anti-collision box 3 will expand to a certain extent, the contact surface of the anti-collision box 3 will be larger, and a stronger reaction buffer force will be obtained, thereby reducing the intensity of kinetic energy as much as possible.

[0042] Further, refer to Figure 1 , Figure 2 and Figure 7 The lower part of the base 2 is provided with a through-hole 21 to allow seawater to enter.

[0043] In the above embodiments, by providing a through-hole 21 at the lower part of the base 2 to allow seawater to enter, the effect of seawater entering the base 2 can be achieved. When the anti-collision box 3 is horizontally displaced, the seawater can increase the resistance and buffer the power of the anti-collision box 3.

[0044] Further, refer to Figure 3 and Figure 4 Each sealing cylinder 51 located in the lower half of the base 2 has multiple water inlets 511 at its lower end to allow seawater to enter. Each water inlet 511 is located below the sea level. As the piston 52 moves upward, it allows seawater to pass through each water inlet 511 and be drawn into the corresponding sealing cylinder 51.

[0045] In the above embodiments, by setting multiple water inlets 511, seawater can be pumped into the sealed cylinder 51 when the lower slide rods 53 slide upward. The process of seawater passing through the water inlets 511 one by one has resistance, so as to consume energy. The piston 52 uses seawater to achieve further cooling.

[0046] Further, refer to Figure 3 and Figure 5 Each rotating shaft 557 extends toward the end closest to the anti-collision box 3, and multiple stirring blades 7 are fixedly connected to its perimeter. Multiple steel wire ropes 8 are fixedly connected to the lower end of the sliding plate 554. The lower end of each steel wire rope 8 extends out of the base 2. The lower end of the steel wire rope 8 is fixedly connected to a water collection dish 9 through a connecting rib. As the sliding plate 554 moves upward, seawater can be pumped into the base 2 through the water collection dish 9 to raise the water level in the base 2.

[0047] In the above embodiments, as the anti-collision box 3 is subjected to pressure, the liquid level inside the base 2 rises instantaneously. The stirring blades 7 stir the liquid, and the resistance to the liquid being transported to the stirring blades 7 is transmitted to the rotating shaft 557, thereby consuming kinetic energy. Furthermore, through the water collection dish 9, when the anti-collision box 3 is displaced after being subjected to force, as the sliding plate 554 moves upward, more seawater is poured into the base 2, further increasing the liquid volume inside the base 2. This not only benefits the energy consumption of the anti-collision box 3 itself in squeezing the liquid, but also increases the resistance to the rotation of the stirring blades 7.

[0048] Further, refer to Figure 7 The upper opening of the water collecting dish 9 is larger than the through opening 21 of the base 2. The middle material of the water collecting dish 9 and the connecting rib is deformed and reset under the action of external force, so that the seawater stored in the water collecting dish 9 can be further injected into the interior of the base 2 to increase the height of the internal liquid level.

[0049] Further, refer to Figure 1 The anti-collision box 3 has a rubber soft layer connected to the ship-facing side.

[0050] In the above embodiments, the soft rubber layer can reduce and mitigate the damage to the anti-collision box 3 caused by the hull, and can also reduce the kinetic energy during the collision.

[0051] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A protective device for the safe berthing of ships at a dock, used to connect to the ship-facing face of the berthing pier, characterized in that, The system includes a base for vertically fixing the ship-facing side of the pier, with a collision box slidably connected to the opening of the base for contacting the ship's hull, and a vibration damping assembly connecting the base and the collision box, the vibration damping assembly comprising: The buffer component includes multiple horizontally arranged annular airbags and a first spring placed in the middle of the airbags. One end of each airbag and the first spring is fixedly connected to the anti-collision box, and the other end is connected to the base. It is used to buffer the impact force transmitted from the hull to the anti-collision box. Multiple energy-consuming components include multiple sealing cylinders longitudinally fixed to a base, multiple pistons correspondingly connected to each of the sealing cylinders, multiple sliding rods, second springs connected to each sliding rod, and a pulling component. Each upper sealing cylinder is sealed and connected via a sliding rod, and each lower sealing cylinder is also sealed and connected via a sliding rod. The sliding rods are fixedly connected to their respective pistons. The pistons in the upper half of the sealing cylinders within the base are positioned at the top of the sealing cylinders, while the pistons in the lower half of the sealing cylinders within the base are positioned at the bottom of the sealing cylinders. Each second spring is respectively disposed within a sealing cylinder near the longitudinal center of the base. One end of the second spring is fixedly connected to the inner wall of the corresponding end of the sealing cylinder, and the other end is fixedly connected to the sliding rod via a piston plate. The energy-consuming component has four sealing cylinders, located in the upper and lower halves of the base. There are two of each type of airbag. The two upper sealing cylinders and the two lower sealing cylinders are fixedly connected to each other by end plates. The airbags are fixed to the end plates to connect with the base. The end plates have longitudinal grooves, and sliders are slidably connected to the upper and lower sides of the corresponding airbags in the grooves. The ends of the two sliders near the anti-collision box are hinged to connecting rods that are inclined in opposite directions. The other ends of the connecting rods are hinged to the inner wall of the anti-collision box. The distance between the ends of the two connecting rods connected to the sliders on the same end plate is smaller than the distance between the ends of the two connecting rods connected to the anti-collision box. As the anti-collision box slides into the base, the two sliders compress the side walls of the corresponding airbags. As the anti-collision box slides into the base, a pulling member synchronously pulls the two sliding rods to slide towards each other. The pulling member includes: Multiple first pull ropes, one end of which is fixedly connected to the end of the slide rod exposed outside the sealing cylinder; Multiple winches are horizontally rotatably connected to the inner wall of the base via fixed shafts. The other end of each first pulling rope is fixed to the corresponding adjacent winch. As the winch rotates, the sliding rod is pulled by the first pulling rope. Each shaft is fixed with a toothed disc. There is a gap between the two toothed discs in the middle, and the other two adjacent toothed discs mesh with each other. A sliding plate is slidably connected to the middle of the base along the longitudinal direction, and toothed plates that mesh with the toothed discs on both sides are fixedly connected to both sides. The second traction rope has one end fixedly connected to the top of the sliding plate, and the other end extends upward and passes through the base, is guided by the wheel, and is then fixedly connected to the top of the anti-collision box.

2. The protective device for safe berthing of ships at a dock as described in claim 1, characterized in that, The lower part of the base has a through-hole for seawater to be poured in.

3. A protective device for the safe berthing of ships at a dock as described in claim 2, characterized in that, The lower end of each of the sealed cylinders located in the lower half of the base is provided with multiple water inlets to allow seawater to enter. Each water inlet is located below the sea level. As the piston moves upward, it allows seawater to pass through each water inlet and be drawn into the corresponding sealed cylinder.

4. A protective device for the safe berthing of ships at a dock as described in claim 2, characterized in that, Each of the aforementioned rotating shafts extends toward the end closest to the anti-collision box, and multiple stirring blades are fixedly connected to its periphery. Multiple steel wire ropes are fixedly connected to the lower end of the sliding plate, and the lower end of each steel wire rope extends out of the base. The lower end of the steel wire rope is fixedly connected to a water collection dish through a connecting rib. As the sliding plate moves upward, seawater can be pumped into the base through the water collection dish to raise the water level in the base.

5. A protective device for the safe berthing of ships at a dock as described in claim 4, characterized in that, The upper opening of the water collection dish is larger than the through opening of the base. The middle part of the water collection dish and the connecting rib is made of shape memory alloy steel, which deforms under external force so that the seawater stored in the water collection dish can be further injected into the base.

6. A protective device for the safe berthing of ships at a dock as described in claim 1, characterized in that, The anti-collision box has a soft rubber layer attached to the ship-facing side.

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