Ship collision cushioning device
By installing a combination structure of an internal sliding connection sealing plate and a secondary buffer component at the stern of the ship, and utilizing flexible components and through-hole design, the problem of the simple structure of existing ship collision avoidance devices is solved, achieving efficient energy absorption and ship protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG PORT & SHIPPING ECONOMIC DEV CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-07-07
AI Technical Summary
Existing ship collision avoidance devices have simple structures and cannot effectively absorb the force of violent collisions, leading to ship damage and posing safety hazards.
A ship collision buffer device was designed, comprising a mounting shell, a sealing plate, secondary buffer components, and through holes. The sealing plate slides within the mounting shell and absorbs collision energy through a combination of flexible components, elastic components, and through holes, thereby enhancing the buffering effect.
It effectively absorbs collision energy, reduces ship damage, improves ship safety, and enhances the response speed and stability of the buffer device, making it suitable for ships of different tonnages and types.
Smart Images

Figure CN224466083U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ship collision avoidance technology, and in particular to a ship collision buffer device. Background Technology
[0002] A ship is a man-made means of transportation that primarily operates in water. Civilian ships are generally called boats, military ships are called warships, and small boats are called vessels or dinghies; collectively, they are referred to as ships or dinghies. Internally, they mainly include interior space, supporting structures, and drainage structures, and have a propulsion system that utilizes external or internal energy sources. Externally, they are generally streamlined envelopes designed to overcome fluid resistance. Materials used are constantly evolving with technological advancements; early materials included natural materials such as wood, bamboo, and hemp, while modern materials primarily include steel, aluminum, fiberglass, acrylic, and various composite materials.
[0003] Existing ships are equipped with anti-collision devices to increase ship safety. However, the structure of general anti-collision devices is too simple, or even just uses rubber to buffer the impact force. In the event of a violent collision, the force cannot be effectively filtered, which can lead to ship damage and safety accidents.
[0004] Therefore, it is necessary to provide a new ship collision buffer device to solve the above-mentioned technical problems. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a ship collision buffer device.
[0006] The ship collision buffer device provided by this utility model includes: a hull, and a buffer device detachably connected to the stern of the hull. The buffer device includes a mounting shell, a sealing plate slidably connected inside the mounting shell, a plurality of through holes opened on the side wall of the mounting shell, and a secondary buffer component fixedly connected to one side of the sealing plate.
[0007] The secondary buffer component includes two opposing fixed plates, both of which are fixedly connected to the side wall of the sealing plate. A flexible element is inserted between the two fixed plates. Each fixed plate has a sliding groove, and an elastic element is slidably connected within the sliding groove. A guide rod is inserted within the fixed plate to guide the elastic element. A spring is nested outside the guide rod. One end of the spring is fixedly connected to the side wall of the elastic element, and the other end of the spring is fixedly connected to the vertical side wall of the sliding groove.
[0008] Preferably, the elastic element includes a slider, a receiving plate is fixedly connected inside the slider, and multiple springs are fixedly connected to both the upper and lower sides of the receiving plate. Each of the multiple springs is fixedly connected to an abutment block at the end away from the receiving plate, and the end of the abutment block away from the receiving plate is slidably connected to a sliding groove.
[0009] Preferably, the inner cavity of the mounting shell is fixedly connected to multiple support rods, which penetrate the sealing plate. A flexible pad is nested outside the sealing plate, and the flexible pad fits into the inner cavity of the mounting shell.
[0010] Preferably, the inner cavity sidewall of the mounting housing is detachably connected to multiple filter screens, and the multiple filter screens are respectively attached to the two sidewalls of the mounting housing.
[0011] Preferably, the longitudinal section of the sliding groove is an isosceles trapezoid, and the height of the vertical sidewall of the sliding groove on the side adjacent to the hull is less than the height of the vertical sidewall on the side away from the hull.
[0012] Preferably, the outer wall of the abutment block on the side away from the receiving plate is inclined.
[0013] Preferably, the through hole is frustum-shaped, and the longitudinal cross-sectional diameter of the through hole gradually decreases from the inside of the mounting housing to the outside of the mounting housing.
[0014] Preferably, the radius of the flexible element is smaller than the distance between the central axis of the slider and the sealing plate.
[0015] Preferably, when the flexible component is in the state of maximum deformation, the distance from the side wall of the fixed plate to the shore is greater than or equal to 0.
[0016] Preferably, a silicone pad is fixedly connected to the side wall of the abutment block away from the receiving plate, and the other side of the silicone pad is in contact with the inner cavity of the sliding groove.
[0017] Compared with related technologies, the ship collision buffer device provided by this utility model has the following beneficial effects:
[0018] 1. This utility model provides a ship collision buffer device. In specific implementation, since the side wall of the mounting shell has multiple through holes, the mounting shell stores some water and air. When the ship docks, the shore applies a squeezing force to the flexible component. The flexible component squeezes and pushes the sealing plate to slide inside the mounting shell, thereby squeezing the water and air out of the mounting shell from the through holes. During the squeezing process, the water and air have a buffering effect on the sealing plate, preventing damage to the ship.
[0019] 2. The sealing plate is slidably connected within the mounting housing, allowing it to move in a preset direction upon impact, thereby engaging the secondary buffer components in energy absorption. Two fixed plates within the secondary buffer components further enhance the system's buffering capacity through elastic elements, ensuring effective protection of the hull even under high-intensity impacts. The sliding design of the sealing plate avoids the limitations of traditional rigid structures, significantly improving the response speed and stability of the buffer device. Attached Figure Description
[0020] Figure 1 A schematic diagram showing the installation position of the ship collision buffer device provided by this utility model;
[0021] Figure 2 A schematic diagram of the overall structure of the ship collision buffer device provided by this utility model;
[0022] Figure 3 A front view of the ship collision buffer device provided by this utility model;
[0023] Figure 4 Cross-sectional view of the ship collision buffer device provided by this utility model Figure 1 ;
[0024] Figure 5 Cross-sectional view of the ship collision buffer device provided by this utility model Figure 2 .
[0025] The following are the labeling elements in the diagram: 1. Hull; 2. Mounting shell; 3. Sealing plate; 4. Through hole; 5. Secondary buffer component; 51. Fixing plate; 52. Flexible component; 53. Sliding groove; 54. Elastic component; 541. Slider; 542. Support plate; 543. Spring 2; 544. Abutment block; 55. Guide rod; 56. Spring 1; 6. Support rod; 7. Flexible pad; 8. Filter screen. Detailed Implementation
[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0027] Please refer to the following: Figure 1 — Figure 5 ,in, Figure 1 A schematic diagram showing the installation position of the ship collision buffer device provided by this utility model; Figure 2 A schematic diagram of the overall structure of the ship collision buffer device provided by this utility model; Figure 3 A front view of the ship collision buffer device provided by this utility model; Figure 4 Cross-sectional view of the ship collision buffer device provided by this utility model Figure 1 ; Figure 5 Cross-sectional view of the ship collision buffer device provided by this utility model Figure 2 .
[0028] In practical implementation, a ship collision buffer device has the following structure: Figure 1 — Figure 5 As shown, it includes: hull 1, and also includes a buffer device bolted to the stern of hull 1. The buffer device includes a mounting shell 2, a sealing plate 3 slidably connected inside the mounting shell 2, and multiple through holes 4 on the side wall of the mounting shell 2. A secondary buffer component 5 is welded to one side of the sealing plate 3.
[0029] It should be noted that the buffer device is installed at the stern of hull 1 by means of bolt connection, which facilitates daily maintenance and replacement. When the ship is docked or in the event of a collision, the buffer device can effectively absorb and disperse the impact force, reducing direct damage to hull 1. This modular design not only improves the flexibility of the device, but also makes it suitable for ships of different tonnages and types, with strong adaptability.
[0030] The secondary buffer component 5 includes two opposing fixed plates 51, with a flexible element 52 inserted between the two fixed plates 51. The flexible element 52 is made of silicone. Both fixed plates 51 are welded to the side wall of the sealing plate 3. Each fixed plate 51 has a sliding groove 53. An elastic element 54 is slidably connected in the sliding groove 53. A connecting rod is inserted in the flexible element 52. The two ends of the connecting rod are bolted to the side wall of the two elastic elements 54 respectively. A guide rod 55 is inserted in the fixed plate 51 to guide the elastic element 54. A spring 56 is nested outside the guide rod 55. One end of the spring 56 is fixedly connected to the side wall of the elastic element 54, and the other end of the spring 56 is fixedly connected to the vertical side wall of the sliding groove 53.
[0031] It should be noted that when the ship docks, the stern collides with the shore. Under the action of the collision force, the flexible component 52 pushes the sealing plate 3 to slide inside the mounting shell 2. Since the side wall of the mounting shell 2 has multiple through holes 4, some water and air are present inside the mounting shell 2. Under the pressure of the sealing plate 3, the water and air exert a reverse force on the sealing plate 3, thereby achieving a spring-like effect. Most of the impact force is buffered by the "spring" formed by the water and air. At the same time, the spring 56 applies elastic force to the elastic component 54, and the friction between the elastic component 54 and the side wall of the sliding groove 53 also plays a buffering role.
[0032] The elastic element 54 includes a slider 541, a receiving plate 542 is fixedly connected inside the slider 541, and multiple springs 543 are fixedly connected to both the upper and lower sides of the receiving plate 542. Each of the multiple springs 543 is fixedly connected to an abutment block 544 at the end away from the receiving plate 542. The end of the abutment block 544 away from the receiving plate 542 is slidably connected to the sliding groove 53. A silicone pad is fixedly connected to the side wall of the abutment block 544 away from the receiving plate 542, and the other side of the silicone pad is in contact with the inner cavity of the sliding groove 53.
[0033] It should be noted that the elastic element 54 is composed of a slider 541, a receiving plate 542, a second spring 543, and a stop block 544. These components work together to achieve efficient energy absorption. The multiple second springs 543 on the upper and lower sides of the receiving plate 542 can be compressed when pressure is applied and slowly return to their original shape after the pressure is released, thus slowing down the impact speed. The silicone pad on the outside of the stop block 544 increases the friction, thereby playing a buffering role.
[0034] Multiple support rods 6 are fixedly connected to the inner cavity of the mounting shell. The multiple support rods 6 pass through the sealing plate 3. A flexible gasket 7 is nested outside the sealing plate 3. The flexible gasket 7 fits into the inner cavity of the mounting shell.
[0035] It should be noted that the design of multiple support rods 6 penetrating the sealing plate 3 enhances the overall stability of the structure and prevents the sealing plate 3 from deforming excessively under strong impact. The flexible pad 7 wraps around the outside of the sealing plate 3 and fits tightly with the inner cavity of the mounting shell, playing a dual role: on the one hand, it ensures that when the sealing plate 3 is impacted, water inside the mounting shell 2 is prevented from flowing out through the gap between the sealing plate 3 and the inner cavity of the mounting shell 2, ensuring the buffering effect of water and air on the sealing plate 3; on the other hand, its own softness reduces the transmission of vibration to the hull 1, providing additional buffering effect. This design effectively improves the reliability and durability of the buffer device.
[0036] Multiple filters 8 are detachably connected to the inner cavity sidewall of the mounting shell 2, and the multiple filters 8 are respectively attached to the two sidewalls of the mounting shell.
[0037] It should be noted that the multiple filters 8 inside the mounting shell 2 are respectively attached to the two side walls of the mounting shell, which can effectively prevent external debris from entering the buffer system. At the same time, they can regulate the speed of water flow in and out, optimize the dynamic response characteristics of the buffering process. Especially in marine environments, the design of the filters 8 helps to prevent seaweed, silt and other impurities from clogging the through holes 4, thereby affecting the water flow out of the mounting shell 2, and ensuring that the buffer device is always in the best working condition.
[0038] The longitudinal section of the sliding groove 53 is an isosceles trapezoid, and the height of the vertical sidewall of the sliding groove 53 on the side adjacent to the hull 1 is less than the height of the vertical sidewall on the side away from the hull 1.
[0039] It should be noted that the longitudinal section of the sliding groove 53 is an isosceles trapezoid. The vertical sidewall on the side closer to the hull 1 is lower, while the vertical sidewall on the side farther from the hull 1 is higher. When the flexible member 52 is impacted, the flexible member 52 applies a force close to the hull 1 to the elastic member 54. Under the action of the guide rod 55, the elastic member 54 slides along the guide rod 55, thereby causing the "waist" of the sliding groove 53 to apply a squeezing force to the elastic member 54, thereby compressing the second spring 543 and making the abutment block 544 fit tightly with the sliding groove 53. The magnitude of the friction between the abutment block 544 and the sliding groove 53 is determined by the dynamic friction coefficient of the silicone pad and the magnitude of the elastic force applied by the second spring 543. As the second spring 543 is compressed, the elastic force applied by the spring 543 to the abutment block 544 increases, thereby increasing the friction between the abutment block 544 and the sliding groove 53, which, together with the first spring 56, further achieves the buffering effect.
[0040] The outer wall of the abutment block 544 on the side away from the receiving plate 542 is inclined.
[0041] The through hole 4 is frustum shaped, and the longitudinal diameter of the through hole 4 gradually decreases from the inside of the mounting shell 2 to the outside of the mounting shell 2;
[0042] It should be noted that the through hole 4 is frustum-shaped, and the longitudinal section diameter gradually shortens from the inside to the outside of the mounting shell 2. This design not only guides the water flow to the outside, but also slows down the transmission speed of the impact force through the hydrodynamic effect during the impact process, further improving the buffering effect. In addition, the shape design of the through hole 4 also helps to reduce the erosion of the inner wall of the mounting shell 2 by the water flow and extend the service life of the device. This design can not only prevent the water flow from flowing out quickly when squeezed by the sealing plate 3, but also reduce the possibility of impurities entering the mounting shell 2.
[0043] The radius of the flexible component 52 is smaller than the distance between the central axis of the slider 541 and the sealing plate 3;
[0044] When the flexible component 52 is in the state of maximum deformation, the distance from the side wall of the fixed plate 51 to the shore is greater than or equal to 0.
[0045] It should be noted that when the flexible element 52 is compressed, it applies a compressive force to the sealing plate 53. At the same time, the flexible element 52 drives the elastic element 54 to slide within the sliding groove 53. When the flexible element 52 is at its maximum deformation, the buffering effect of the flexible element reaches its strongest. Since the distance from the side wall of the fixed plate 51 to the shore is greater than or equal to 0 (i.e., the distance between the shore and the side wall of the sealing plate 3 is less than or equal to the width of the horizontal cross section of the flexible element at this time), the shore is prevented from compressing the fixed plate 51 and causing damage to the fixed plate 51, thus extending the service life of the equipment.
[0046] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.
[0047] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A ship collision buffer device, comprising a hull (1), characterized in that, It also includes a buffer device that is detachably connected to the stern of the hull (1). The buffer device includes a mounting shell (2), a sealing plate (3) is slidably connected inside the mounting shell (2), and multiple through holes (4) are opened on the side wall of the mounting shell (2). A secondary buffer component (5) is fixedly connected to one side of the sealing plate (3). The secondary buffer component (5) includes two opposing fixed plates (51), both fixed plates (51) are fixedly connected to the side wall of the sealing plate (3), and both fixed plates (51) are provided with sliding grooves (53). An elastic element (54) is slidably connected in the sliding groove (53). A guide rod (55) for guiding the elastic element (54) is inserted in the fixed plate (51). A spring (56) is nested outside the guide rod (55). One end of the spring (56) is fixedly connected to the side wall of the elastic element (54), and the other end of the spring (56) is fixedly connected to the vertical side wall of the sliding groove (53).
2. The ship collision buffer device according to claim 1, characterized in that, The elastic element (54) includes a slider (541), a receiving plate (542) is fixedly connected inside the slider (541), and multiple springs (543) are fixedly connected on both the upper and lower sides of the receiving plate (542). Each of the multiple springs (543) is fixedly connected to an abutment block (544) at the end away from the receiving plate (542). The end of the abutment block (544) away from the receiving plate (542) is slidably connected to the sliding groove (53).
3. The ship collision buffer device according to claim 2, characterized in that, Multiple support rods (6) are fixedly connected to the inner cavity of the mounting shell (2). The multiple support rods (6) penetrate the sealing plate (3). A flexible pad (7) is nested outside the sealing plate (3). The flexible pad (7) fits into the inner cavity of the mounting shell (2).
4. The ship collision buffer device according to claim 3, characterized in that, The inner cavity sidewall of the mounting shell (2) is detachably connected to a plurality of filters (8), and the plurality of filters (8) are respectively attached to the two sidewalls of the mounting shell (2).
5. The ship collision buffer device according to claim 4, characterized in that, The longitudinal section of the sliding groove (53) is an isosceles trapezoid, and the height of the vertical sidewall of the sliding groove (53) on the side adjacent to the hull (1) is less than the height of the vertical sidewall on the side away from the hull (1).
6. The ship collision buffer device according to claim 5, characterized in that, The outer wall of the abutment block (544) on the side away from the receiving plate (542) is inclined.
7. The ship collision buffer device according to claim 6, characterized in that, The through hole (4) is frustum shaped, and the longitudinal section diameter of the through hole (4) gradually shortens from inside the mounting shell (2) to outside the mounting shell (2).
8. The ship collision buffer device according to claim 7, characterized in that, A flexible element (52) is inserted between the two fixed plates (51), and the radius of the flexible element (52) is smaller than the distance between the central axis of the slider (541) and the sealing plate (3).
9. The ship collision buffer device according to claim 8, characterized in that, When the flexible component (52) is in the state of maximum deformation, the distance from the side wall of the fixed plate (51) to the shore is greater than or equal to 0.
10. The ship collision buffer device according to claim 9, characterized in that, A silicone pad is fixedly connected to the side wall of the abutment block (544) away from the receiving plate (542), and the other side of the silicone pad is in contact with the inner cavity of the sliding groove (53).