Multi-stage buffer type fender for ship protection

Abstract

The invention relates to the technical field of fenders, in particular to a multi-stage buffer type fender for ship protection. Comprising a mounting plate; the connecting plate is arranged on the mounting plate, a plurality of adjusting plates are hinged to the connecting plate, sliding frames are hinged to the adjusting plates, and the sliding frames are jointly connected with a buffering plate in a sliding mode; the buffer pipe is fixedly connected to the buffer plate, and the buffer pipe is in sliding connection with an extrusion rod; the connecting telescopic rod is fixedly connected to the connecting plate, and an extrusion block is arranged at the telescopic end of the connecting telescopic rod; and the two hydraulic telescopic rods are fixedly connected to the mounting plate, and the telescopic ends of the hydraulic telescopic rods are fixedly connected with supporting frames. In the ship berthing process, the ship is buffered in a multi-stage mode through the buffer pipe and the connecting telescopic rod, the extrusion force of the buffer plate is dispersed through the extrusion block in the buffering process, part of the extrusion force is guided to a riverbed, and therefore the extrusion force on a concrete wall when the ship is berthed is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of fenders, and particularly to a multi-stage buffer fender for ship protection. Background Art

[0002] A fender is an elastic buffer device used at docks, mainly used to slow down the impact force between a ship and the dock when the ship docks, so as to prevent the direct collision between the ship and the dock from damaging their structures. Most of the fenders used in existing docks are made of elastic materials. When in use, they are mostly fixed to the outer concrete wall of the dock shore by bolts. When the ship approaches the dock, the deformation of the fender is used to buffer the extrusion force between the ship and the dock, thereby protecting both from damage caused by direct collision. However, when the impact of the ship is too large, the fender may not be able to completely absorb the impact energy generated by the ship, and there will still be a rigid contact between the ship and the dock, which may cause damage to both. At the same time, during the process of the ship squeezing the fender, the reaction force generated by the fender will still act on the concrete wall of the dock. When the extrusion force received by the concrete wall is too large, the outer layer of the concrete wall is easily damaged and peeled off, resulting in a reduction in the connection strength between the concrete wall and the fender, affecting the normal use of the fender. Summary of the Invention

[0003] The present invention provides a multi-stage buffer fender for ship protection, aiming to solve the disadvantages of the single buffer structure of the existing fender and the fact that the reaction force generated by the fender will act entirely on the concrete wall.

[0004] The technical implementation solution of the present invention is: a multi-stage buffer fender for ship protection, comprising: a mounting plate; a connecting plate disposed on the mounting plate, the connecting plate being hinged with a plurality of adjusting plates, a torsion spring being disposed between the adjusting plate and the connecting plate, the adjusting plate being hinged with a sliding frame, a plurality of the sliding frames being commonly slidably connected with a buffer plate, a first spring being disposed between the sliding frame and the buffer plate; a buffer tube fixedly connected to the buffer plate, the buffer tube being slidably connected with a pressing rod, and a second spring being fixedly connected between the two, the buffer tube being provided with a through hole; a connecting telescopic rod fixedly connected to the connecting plate, an extrusion block being disposed at the telescopic end of the connecting telescopic rod, inclined surfaces being disposed on the opposite sides of the extrusion block and the pressing rod; two hydraulic telescopic rods, both fixedly connected to the mounting plate, the hydraulic telescopic rods being communicated with the connecting telescopic rod through a liquid infusion tube, a support frame being fixedly connected to the telescopic end of the hydraulic telescopic rod; and a sealing component disposed on the buffer tube, for adjusting the communication relationship between the through hole of the buffer tube and the outside according to the impact force of the ship on the buffer plate.

[0005] Preferably, the sealing assembly includes: a sealing telescopic rod fixedly connected to the buffer tube; a sealing ring slidably connected to the buffer tube, the sealing ring being fixedly connected to the telescopic end of the sealing telescopic rod, and a third spring being provided between the sealing ring and the buffer plate, the sealing ring being used for plugging the through hole of the buffer tube.

[0006] Preferably, the width of the sealing ring is greater than the diameter of the through hole in the buffer tube, for ensuring that the sealing ring can seal the through hole of the buffer tube.

[0007] Preferably, the sealing assembly further includes: a detection telescopic rod fixedly connected to the connecting plate, the telescopic end of the detection telescopic rod being fixedly connected to the buffer plate, the detection telescopic rod being communicated with the sealing telescopic rod through an air delivery pipe, the detection telescopic rod being used for detecting the moving speed of the buffer plate.

[0008] Preferably, the detection telescopic rod is provided with an exhaust hole, and the exhaust hole is used for slowly releasing the gas in the detection telescopic rod.

[0009] Preferably, it further includes: a rotating mechanism provided on the mounting plate for driving the connecting plate to rotate, the rotating mechanism including: a rotating telescopic rod fixedly connected to the mounting plate, the mounting plate being hinged to the connecting plate, the telescopic end of the rotating telescopic rod being ball-jointed with a first sliding block, the first sliding block being connected to the connecting plate in a limiting and sliding manner; an annular shell slidably connected to the rotating telescopic rod, the rotating telescopic rod being provided with a communication hole, the hydraulic telescopic rod being communicated with the annular shell through a communication pipe; a communication assembly provided on the rotating telescopic rod for driving the annular shell to move; a fixing assembly provided on the mounting plate for fixing the connecting plate.

[0010] Preferably, the communication assembly includes: a transmission rod fixedly connected to the annular shell, the transmission rod being used for driving the annular shell to move, the transmission rod passing through the connecting plate, the telescopic end of the connecting telescopic rod being fixedly connected with a second sliding block, the second sliding block being connected to the extrusion block in a limiting and sliding manner; a limiting block fixedly connected to the connecting plate, the limiting block being in contact with the extrusion block, the limiting block being used for restricting the position of the extrusion block, and an inclined surface being provided on the lower side of the limiting block, the inclined surface being used for guiding the movement of the extrusion block.

[0011] Preferably, the included angle between the inclined surface on the limiting block and the horizontal plane is less than 30°, for reducing the downward moving distance of the extrusion block when moving along the inclined surface on the limiting block.

[0012] Preferably, the lower side surface of the extrusion rod is lower than the lower side surface of the limiting block, for ensuring that the extrusion rod always extrudes the extrusion block.

[0013] Preferably, the fixing component includes: a support plate fixedly connected to the mounting plate, and the support plate is used to support the connecting plate; a limiting plate fixedly connected to the support plate, and the limiting plate is used to fix the connecting plate.

[0014] The present invention has the following advantages: 1. During the process of the ship docking, the present invention performs multi-stage buffering on the ship through the buffer tube and the connecting telescopic rod, and during the buffering process, the extrusion force of the buffer plate is dispersed by the extrusion block, and part of the extrusion force is guided to the river bed, thereby reducing the extrusion force on the concrete wall when the ship docks and ensuring the connection strength between the concrete wall and the fender.

[0015] 2. When the ship quickly docks, the present invention adjusts the position of the sealing ring by detecting the change in air pressure in the telescopic rod, so that the buffer tube directly drives the extrusion rod to move, increasing the resistance of the buffer plate to move, thereby quickly reducing the speed of the ship.

[0016] 3. When the buffer plate cannot bear the extrusion force of the ship, the present invention drives the buffer plate to rotate by rotating the telescopic rod, changing the direction of the force on the buffer plate, thereby reducing the positive impact force received by the buffer plate and avoiding the ship directly hitting the concrete wall after the buffer plate cannot buffer the ship, resulting in damage to the device. Description of the Drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 is a three-dimensional structural schematic diagram of the connecting plate, the adjusting plate and the buffer plate of the present invention;

[0019] Figure 3 is a three-dimensional structural schematic diagram of the adjusting plate, the support frame and the detection telescopic rod of the present invention;

[0020] Figure 4 is a three-dimensional structural sectional view of the adjusting plate, the sliding frame and the buffer plate of the present invention;

[0021] Figure 5 is a three-dimensional structural schematic diagram of the sealing ring, the detection telescopic rod and the rotating telescopic rod of the present invention;

[0022] Figure 6 is a three-dimensional structural schematic diagram of the extrusion rod, the connecting telescopic rod and the extrusion block of the present invention;

[0023] Figure 7 is a three-dimensional structural schematic diagram of the extrusion rod, the connecting telescopic rod and the second sliding block of the present invention;

[0024] Figure 8 is a three-dimensional structural schematic diagram of the first sliding block, the annular shell and the limiting block of the present invention;

[0025] Figure 9This is a three-dimensional structural cross-sectional view of the connecting plate, the first sliding block, and the annular shell of the present invention.

[0026] Reference numerals: 1 - mounting plate, 2 - connecting plate, 3 - adjusting plate, 4 - sliding frame, 5 - buffer plate, 6 - buffer tube, 7 - extrusion rod, 8 - connecting telescopic rod, 9 - extrusion block, 10 - hydraulic telescopic rod, 11 - support frame, 12 - sealing telescopic rod, 13 - sealing ring, 14 - detection telescopic rod, 15 - rotating telescopic rod, 16 - first sliding block, 17 - annular shell, 18 - transmission rod, 19 - second sliding block, 20 - limiting block, 21 - support plate, 22 - limiting plate. Detailed implementation manners

[0027] The present invention will be described in detail below with reference to the drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation. Moreover, the drawing part is only for more specifically describing the embodiments and is not intended to specifically limit the present invention.

[0028] A multi-stage buffer fender for ship protection, as Figures 1-7 shown, includes: a mounting plate 1; a connecting plate 2 disposed on the mounting plate 1, the connecting plate 2 is hinged with a plurality of adjusting plates 3, a torsion spring is disposed between the adjusting plate 3 and the connecting plate 2, the adjusting plate 3 is hinged with a sliding frame 4, a plurality of sliding frames 4 are jointly slidably connected with a buffer plate 5, and a first spring is disposed between the sliding frame 4 and the buffer plate 5; a buffer tube 6 fixedly connected to the buffer plate 5, the buffer tube 6 is slidably connected with an extrusion rod 7, and a second spring is fixedly connected between the two, the buffer tube 6 is provided with a through hole; a connecting telescopic rod 8 fixedly connected to the connecting plate 2, an extrusion block 9 is disposed at the telescopic end of the connecting telescopic rod 8, and inclined surfaces are disposed on the opposite sides of the extrusion block 9 and the extrusion rod 7; two hydraulic telescopic rods 10 are both fixedly connected to the mounting plate 1, the hydraulic telescopic rods 10 are communicated with the connecting telescopic rod 8 through a liquid infusion tube, and the telescopic end of the hydraulic telescopic rod 10 is fixedly connected with a support frame 11; a sealing assembly is disposed on the buffer tube 6 for adjusting the communication relationship between the through hole of the buffer tube 6 and the outside according to the impact force of the ship on the buffer plate 5.

[0029] In the above solution, it aims to solve the drawback that during the process of being squeezed by a ship, the reaction force generated when the fender is squeezed will be transmitted to the concrete wall, causing the concrete wall to be subjected to excessive squeezing force and resulting in easy peeling of its surface. Waterproof materials are sprayed at the joints of the parts inside this device to reduce the corrosion of the parts inside this device by water and extend the service life of this device. In this implementation, the connection plate 2 and the mounting plate 1 are fixedly connected. The torsion spring between the connection plate 2 and the adjustment plate 3 is always in a state of storing energy, and the distance between the front ends of the two adjustment plates 3 is less than the distance between their rear ends. In this implementation, the number of sliding frames 4 is two. The buffer plate 5 is made of carbon alloy to ensure that the buffer plate 5 will not deform when being squeezed by a ship. Conical strips evenly distributed are arranged on the front side of the buffer plate 5, and the conical strips are made of rubber material. The conical strips on the buffer plate 5 are used to separate the buffer plate 5 from the ship and reduce the wear during their squeezing process. The elastic coefficient of the second spring in the buffer tube 6 is less than the elastic coefficient of the elastic member in the connecting telescopic rod 8, so that after the second spring in the buffer tube 6 is compressed to the limit, the telescopic end of the connecting telescopic rod 8 moves again. The through hole on the buffer tube 6 is used to discharge the gas inside it, enabling the buffer tube 6 and the extrusion rod 7 to move relatively. The extrusion block 9 is used to disperse the reaction force of the buffer plate 5 on the concrete wall (i.e., the squeezing force of the buffer plate 5 on the concrete wall). Both the connecting telescopic rod 8 and the hydraulic telescopic rod 10 are filled with hydraulic oil. The support frame 11 consists of two discs and a round rod, and initially, the disc on the lower side of the support frame 11 contacts the riverbed (the length of the support frame 11 in the figure is for reference only and can be adjusted according to the actual situation during use). This disc is used to increase the contact area between the support frame 11 and the riverbed, thereby increasing the resistance when the support frame 11 moves downward and preventing the support frame 11 from sinking into the riverbed. The sealing component is used to block the through hole of the buffer tube 6 when the buffer plate 5 is subjected to a large squeezing force in a short period of time, increasing the resistance to the movement of the buffer plate 5.

[0030] Working process: During the process of a ship docking, if the inertial force of the ship itself is small, the squeezing force of the ship on the buffer plate 5 is small. When the ship contacts the buffer plate 5, the ship squeezes the buffer plate 5 backward, causing the buffer plate 5 to drive the parts on it to move backward. The buffer plate 5 moves and drives the adjustment plate 3 to rotate through the sliding frame 4. The rotation of the adjustment plate 3 stores energy in the torsion spring on it. At the same time, the front parts of the two adjustment plates 3 approach each other and drive the adjacent sliding frame 4 to move. The sliding frame 4 moves and compresses the first spring between it and the buffer plate 5. During this process, the buffer plate 5 drives the buffer tube 6 to move backward. The buffer tube 6 moves backward relative to the extrusion rod 7 and compresses the second spring inside it, thereby buffering the squeezing force of the ship. After the squeezing force of the ship on the buffer plate 5 is equal to the reaction force of the second spring in the buffer tube 6 on itself, the buffer plate 5 stops moving, the ship stops moving and the docking is completed. When the ship leaves, the adjustment plate 3 rotates in the reverse direction under the action of the torsion spring on it, causing the buffer plate 5 and the parts on it to reset.

[0031] During the process of the ship docking, if the inertial force of the ship is large, the extrusion force of the ship on the buffer plate 5 is large. As the buffer tube 6 moves backward relative to the extrusion rod 7, when the second spring in the buffer tube 6 is compressed to the limit, the buffer tube 6 drives the extrusion rod 7 to move backward through the second spring therein. The extrusion rod 7 squeezes the extrusion block 9 downward through the inclined surface thereon, so that while the buffer plate 5 transfers part of the extrusion force to the extrusion block 9, the resistance of the buffer plate 5 moving backward is increased, thereby increasing the force that hinders the movement of the ship and accelerating the docking of the ship. During this process, the extrusion block 9 drives the telescopic end of the connecting telescopic rod 8 to move downward, so that the hydraulic oil in the connecting telescopic rod 8 enters the hydraulic telescopic rod 10 through the infusion tube. The telescopic end of the hydraulic telescopic rod 10 extends and drives the support frame 11 to move downward to squeeze the riverbed, transferring part of the extrusion force of the buffer plate 5 on the concrete wall to the riverbed, thereby reducing the extrusion force of the buffer plate 5 acting on the concrete wall and preventing all of it from acting on the concrete wall, resulting in excessive force on the concrete wall and causing it to fall off, affecting the connection strength between the concrete wall and the fender. When the resistance received by the buffer plate 5 is equal to the extrusion force of the ship on it, the buffer plate 5 stops moving, the ship stops moving and completes docking. When the ship leaves, the buffer plate 5 drives the parts thereon to move in the reverse direction to reset. At this time, the extrusion force of the extrusion rod 7 on the extrusion block 9 decreases, the telescopic end of the connecting telescopic rod 8 drives the extrusion block 9 to move upward to reset, and the telescopic end of the hydraulic telescopic rod 10 retracts to drive the support frame 11 to reset.

[0032] During the process of the ship docking, if the docking speed of the ship is fast, as the ship quickly squeezes the buffer plate 5 backward, the moving speed of the buffer plate 5 backward is large. At this time, the sealing component seals the through hole on the buffer tube 6 so that the gas inside it cannot be quickly discharged. The buffer tube 6 directly drives the extrusion rod 7 to move and squeeze the extrusion block 9, increasing the resistance when the buffer plate 5 initially moves, thereby quickly offsetting the impact force of the ship and making the ship stop quickly. When the ship leaves, the buffer plate 5 drives the parts thereon to move and reset, and the sealing component resets, so that the buffer tube 6 is reconnected to the outside through the through hole thereon.

[0033] Further, as Figures 5-7 shown, the sealing component includes: a sealing telescopic rod 12, fixedly connected to the buffer tube 6; a sealing ring 13, slidably connected to the buffer tube 6. The sealing ring 13 is fixedly connected to the telescopic end of the sealing telescopic rod 12, and a third spring is provided between the sealing ring 13 and the buffer plate 5. The sealing ring 13 is used to block the through hole of the buffer tube 6.

[0034] Further, as Figures 5-7 shown, the width of the sealing ring 13 is greater than the diameter of the through hole on the buffer tube 6, which is used to ensure that the sealing ring 13 can seal the through hole of the buffer tube 6.

[0035] Further, as Figures 3-7As shown in the figure, the sealing assembly further includes a detection telescopic rod 14, which is fixedly connected to the connecting plate 2. The telescopic end of the detection telescopic rod 14 is fixedly connected to the buffer plate 5. The detection telescopic rod 14 is communicated with the sealing telescopic rod 12 through an air pipe. The detection telescopic rod 14 is used to detect the moving speed of the buffer plate 5.

[0036] Furthermore, as Figures 5-7 shown, the detection telescopic rod 14 is provided with an exhaust hole, which is used to slowly release the gas in the detection telescopic rod 14.

[0037] The above solution is used to seal the through hole of the buffer tube 6 when the moving speed of the ship is fast, so that the buffer tube 6 directly drives the extrusion rod 7 to move, thereby increasing the resistance of the buffer plate 5 to move initially (that is, increasing the buffering force of the buffer plate 5 on the ship). The diameter and length of the sealing telescopic rod 12 are both smaller than those of the detection telescopic rod 14. The sealing telescopic rod 12 is an elastic telescopic rod. Initially, the telescopic end of the detection telescopic rod 14 is in the extended state. When the telescopic end of the detection telescopic rod 14 is normally retracted, the gas in the detection telescopic rod 14 will not enter the sealing telescopic rod 12. The width of the sealing ring 13 is twice the diameter of the through hole on the buffer tube 6, ensuring that the sealing ring 13 can seal the through hole of the buffer tube 6. The detection telescopic rod 14 is used to detect the moving speed of the buffer plate 5 during the process of the buffer plate 5 approaching the connecting plate 2.

[0038] Working process: During the process of the ship squeezing the buffer plate 5 as described above, the buffer plate 5 drives the sealing telescopic rod 12 and the sealing ring 13 to move backward through the buffer tube 6. If the speed of the ship pushing the buffer plate 5 to move is slow, the moving speed of the telescopic end of the detection telescopic rod 14 is slow, and the gas in the detection telescopic rod 14 is normally discharged from its exhaust hole, and the air pressure in the detection telescopic rod 14 remains stable. The telescopic end of the sealing telescopic rod 12 does not move, and the buffer tube 6 repeats the above process and moves backward. If the speed of the ship pushing the buffer plate 5 to move is fast, the moving speed of the telescopic end of the detection telescopic rod 14 is fast, and the gas in the detection telescopic rod 14 cannot be completely discharged in a short time, resulting in an increase in its internal air pressure. Part of the gas in the detection telescopic rod 14 enters the sealing telescopic rod 12 through the air pipe. The telescopic end of the sealing telescopic rod 12 extends and drives the sealing ring 13 to move forward relative to the buffer tube 6. The sealing ring 13 compresses the adjacent third spring and seals the through hole of the buffer tube 6, so that the buffer tube 6 directly drives the extrusion rod 7 to move backward and squeeze the extrusion block 9, increasing the resistance when the buffer plate 5 moves backward, so that the ship stops quickly. When the ship stops, the air pressure in the detection telescopic rod 14 no longer increases, and the gas in the sealing telescopic rod 12 and the detection telescopic rod 14 continues to be discharged until the air pressure in the detection telescopic rod 14 is restored, and the telescopic end of the sealing telescopic rod 12 retracts to its original position. The sealing ring 13 is reset under the push of the third spring and releases the sealing of the through hole on the buffer tube 6.

[0039] Furthermore, as Figure 4 、Figure 5 , Figure 8 and Figure 9 As shown in Figure 9 , it further includes: a rotating mechanism arranged on the mounting plate 1 for driving the connecting plate 2 to rotate. The rotating mechanism includes: a rotating telescopic rod 15 fixedly connected to the mounting plate 1. The mounting plate 1 is hinged to the connecting plate 2. The telescopic end of the rotating telescopic rod 15 is ball-jointed with a first sliding block 16, and the first sliding block 16 is in limit sliding connection with the connecting plate 2; an annular shell 17 slidably connected to the rotating telescopic rod 15. The rotating telescopic rod 15 is provided with a communication hole, and the hydraulic telescopic rod 10 is communicated with the annular shell 17 through a communication pipe; a communication component arranged on the rotating telescopic rod 15 for driving the annular shell 17 to move; a fixing component arranged on the mounting plate 1 for fixing the connecting plate 2.

[0040] The above solution is used to drive the buffer plate 5 to rotate to adjust the direction of the reaction force on the ship when the extrusion force borne by the buffer plate 5 reaches the maximum and the ship still cannot stop, so as to reduce the forward impact force of the ship on the buffer plate 5. In this embodiment, the rotating telescopic rod 15 is located on the center line of the mounting plate 1 to make the resistance when the rotating telescopic rod 15 pushes the buffer plate 5 to move and the distance required for its telescopic end to extend within a suitable range. The position of the rotating telescopic rod 15 can be adjusted according to the actual situation. The rotating telescopic rod 15 is filled with hydraulic oil. A guiding groove is arranged in the connecting plate 2. The length of the guiding groove in the connecting plate 2 is used to limit the rotation angle of itself. The first sliding block 16 slides in the guiding groove of the connecting plate 2. Initially, the first sliding block 16 is located at the left part of the guiding groove in the connecting plate 2. Initially, the annular shell 17 is not communicated with the communication hole of the rotating telescopic rod 15; the communication component is used to drive the annular shell 17 to move so that the annular shell 17 is communicated with the communication hole of the rotating telescopic rod 15; the fixing component is used to fix the position of the connecting plate 2 so that the connecting plate 2 is parallel to the mounting plate 1 initially.

[0041] Workflow: During the docking process of the ship, when the extrusion block 9 cannot move downward, the device can no longer buffer the ship. If the ship is still not docked stably at this time, the fixing component releases the fixation of the connecting plate 2, and the connecting component drives the annular shell 17 to move backward, so that the annular shell 17 is connected to the rotating telescopic rod 15. The hydraulic oil in the hydraulic telescopic rod 10 enters the rotating telescopic rod 15 through the annular shell 17. The telescopic end of the rotating telescopic rod 15 drives the connecting plate 2 to rotate clockwise (viewed from top to bottom) through the first sliding block 16. The connecting plate 2 drives the buffer plate 5 to rotate through the adjusting plate 3 and the sliding frame 4. The buffer plate 5 rotates and presses the ship, changing the force direction of the ship, thereby reducing the forward impact force received by the buffer plate 5, avoiding the ship directly hitting the concrete wall after the buffer plate 5 cannot buffer the ship, and thus reducing the loss of the ship. When the ship leaves, the staff pushes the buffer plate 5 to rotate reversely to reset. The buffer plate 5 drives the parts on it to reset and retracts the telescopic end of the rotating telescopic rod 15 until the buffer plate 5 is reset, the telescopic end of the rotating telescopic rod 15 and the parts on it are reset. The staff drives the annular shell 17 to reset through the fixing component, so that the annular shell 17 is no longer connected to the rotating telescopic rod 15.

[0042] Further, as Figures 5-8 shown, the connecting component includes: a transmission rod 18, fixedly connected to the annular shell 17. The transmission rod 18 is used to drive the annular shell 17 to move. The transmission rod 18 passes through the connecting plate 2. The telescopic end of the connecting telescopic rod 8 is fixedly connected with a second sliding block 19. The second sliding block 19 is in limit sliding connection with the extrusion block 9; a limit block 20, fixedly connected to the connecting plate 2. The limit block 20 contacts the extrusion block 9. The limit block 20 is used to limit the position of the extrusion block 9. A slope is arranged on the lower side of the limit block 20, and this slope is used to guide the movement of the extrusion block 9.

[0043] Further, as Figures 5-7 shown, the included angle between the upper slope of the limit block 20 and the horizontal plane is less than 30°, which is used to reduce the downward movement distance of the extrusion block 9 when moving along the upper slope of the limit block 20.

[0044] Further, as Figures 5-7 shown, the lower side surface of the extrusion rod 7 is lower than the lower side surface of the limit block 20, which is used to ensure that the extrusion rod 7 always presses the extrusion block 9.

[0045] Further, as Figure 8 shown, the fixing component includes: a support plate 21, fixedly connected to the mounting plate 1. The support plate 21 is used to support the connecting plate 2; a limit plate 22, fixedly connected to the support plate 21. The limit plate 22 is used to fix the connecting plate 2.

[0046] In the above solution, after the extrusion force borne by the buffer plate 5 reaches the maximum, the annular shell 17 is communicated with the rotating telescopic rod 15. The transmission rod 18 is composed of a round rod and a round plate, and the round plate is located on the front side of the connecting plate 2. The round plate is used to increase the contact area between the transmission rod 18 and the extrusion block 9. The connecting plate 2 is provided with a sliding groove, and the transmission rod 18 slides in the sliding groove; a sliding groove is provided at the lower part of the extrusion block 9. The second sliding block 19 is initially located at the rear part of the sliding groove on the extrusion block 9. The sliding groove in the extrusion block 9 is used to limit the moving distance of itself, so that it cannot be separated from the inclined surface of the limiting block 20; the limiting block 20 is used to support the extrusion block 9, so that the extrusion block 9 can only move up and down before contacting the inclined surface of the limiting block 20. At the same time, it prevents the telescopic end of the connecting telescopic rod 8 from being bent due to force during the process of the extrusion rod 7 extruding the extrusion block 9, affecting its normal use. The support plate 21 is located on the right part of the mounting plate 1. The support plate 21 is used to support the right part of the connecting plate 2 to make it horizontal with the mounting plate 1; the limiting plate 22 is L-shaped and made of an elastic material. A limiting groove is provided in the connecting plate 2. Initially, the limiting plate 22 is located in the limiting groove of the connecting plate 2, so that the connecting plate 2 will not rotate. Multiple support columns can be provided between the connecting plate 2 and the mounting plate 1 to increase the support strength of the mounting plate 1 for the connecting plate 2 and avoid the connecting plate 2 from being bent when stressed.

[0047] Working process: During the process of the above extrusion rod 7 extruding the extrusion block 9, the extrusion block 9 moves downward along the front side surface of the limiting block 20. When the extrusion block 9 contacts the inclined surface of the limiting block 20, the extrusion rod 7 continues to extrude the extrusion block 9, so that the extrusion block 9 gradually moves backward along the inclined surface of the limiting block 20 during the downward movement. At this time, the extrusion block 9 moves backward relative to the second sliding block 19. As the extrusion block 9 moves backward, when the extrusion block 9 contacts the transmission rod 18, the extrusion block 9 makes the annular shell 17 move backward by extruding the transmission rod 18, so that the annular shell 17 is communicated with the rotating telescopic rod 15. When the two are communicated, the hydraulic oil in the hydraulic telescopic rod 10 enters the rotating telescopic rod 15, and the telescopic end of the rotating telescopic rod 15 extends and presses the connecting plate 2 forward through the first sliding block 16. At the same time, the connecting plate 2 presses the limiting plate 22, causing the limiting plate 22 to deform and separate from the limiting groove of the connecting plate 2. Then, the connecting plate 2 drives the buffer plate 5 to rotate clockwise (viewed from top to bottom) through the adjusting plate 3 and the sliding frame 4, so that the buffer plate 5 pushes the ship to deflect to one side, adjusts the direction of the ship, and avoids the ship directly hitting the concrete wall after the buffer plate 5 fails to buffer the ship, thereby reducing the loss of the ship.

[0048] After the ship stops, the staff rotates the connecting plate 2 in the reverse direction, and the parts on the connecting plate 2 drive the parts to move backward and reset, so that the limiting plate 22 limits the connecting plate 2 again. After the connecting plate 2 is reset, the staff pulls the transmission rod 18 forward, and the transmission rod 18 drives the annular shell 17 to reset.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multi-stage buffer fender for ship protection, characterized in that: Included are: Mounting plate (1); A connecting plate (2) is arranged on the mounting plate (1), the connecting plate (2) is hingedly connected to a plurality of adjusting plates (3), a torsion spring is arranged between the adjusting plate (3) and the connecting plate (2), the adjusting plate (3) is hingedly connected to a sliding frame (4), the plurality of sliding frames (4) are slidably connected to a buffer plate (5), and a first spring is arranged between the sliding frame (4) and the buffer plate (5); A buffer tube (6) is fixedly connected to the buffer plate (5), the buffer tube (6) is slidably connected to an extrusion rod (7), a second spring is fixedly connected therebetween, and the buffer tube (6) is provided with a through hole; A connecting telescopic rod (8) is fixedly connected to the connecting plate (2), the telescopic end of the connecting telescopic rod (8) is provided with an extrusion block (9), and the extrusion block (9) and the extrusion rod (7) are both provided with inclined surfaces on the facing sides thereof; There are two hydraulic telescopic rods (10), both of which are fixedly connected to the mounting plate (1); the hydraulic telescopic rods (10) are connected to the connecting telescopic rod (8) through a fluid infusion tube; and the telescopic ends of the hydraulic telescopic rods (10) are fixedly connected to a support frame (11); A sealing component is arranged on the buffer tube (6) and is used to adjust the connection relationship between the through hole of the buffer tube (6) and the outside world according to the impact force of the ship on the buffer plate (5).

2. A multi-stage buffer fender for ship protection according to claim 1, characterized in that: The sealing component comprises: A sealing telescopic rod (12) fixedly connected to the buffer tube (6); A sealing ring (13) is slidably connected to the buffer tube (6); the sealing ring (13) is fixedly connected to the telescopic end of the sealing telescopic rod (12); a third spring is provided between the sealing ring (13) and the buffer plate (5); and the sealing ring (13) is used to seal the through hole of the buffer tube (6).

3. A multi-stage buffer fender for ship protection according to claim 2, characterized in that: The width of the sealing ring (13) is greater than the diameter of the through hole on the buffer tube (6), so as to ensure that the sealing ring (13) can seal the through hole of the buffer tube (6).

4. A multi-stage buffer fender for ship protection according to claim 2, characterized in that: The sealing assembly also includes: A detection telescopic rod (14) is fixedly connected to the connecting plate (2), a telescopic end of the detection telescopic rod (14) is fixedly connected to the buffer plate (5), the detection telescopic rod (14) is connected to the sealing telescopic rod (12) through an air pipe, and the detection telescopic rod (14) is used to detect the moving speed of the buffer plate (5).

5. A multi-stage buffer fender for ship protection according to claim 4, characterized in that: The detection telescopic rod (14) is provided with an exhaust hole, and the exhaust hole is used to slowly release the gas in the detection telescopic rod (14).

6. A multi-stage buffer fender for ship protection according to claim 4, characterized in that: Also included are: A rotating mechanism is arranged on the mounting plate (1) and is used to drive the connecting plate (2) to rotate. The rotating mechanism comprises: A rotating telescopic rod (15) is fixedly connected to the mounting plate (1), the mounting plate (1) is hinged to the connecting plate (2), a telescopic end of the rotating telescopic rod (15) is ball-connected with a first sliding block (16), and the first sliding block (16) is connected to the connecting plate (2) in a limited sliding manner; an annular shell (17) slidably connected to the rotating telescopic rod (15); the rotating telescopic rod (15) is provided with a communicating hole; the hydraulic telescopic rod (10) is connected to the annular shell (17) through a communicating pipe; a communicating component is provided on the rotating telescopic rod (15) and is used to drive the annular shell (17) to move; A fixing assembly is arranged on the mounting plate (1) and is used to fix the connecting plate (2).

7. A multi-stage buffer fender for ship protection according to claim 6, characterized in that: The connectivity components include: A transmission rod (18) is fixedly connected to the annular shell (17), and the transmission rod (18) is used to drive the annular shell (17) to move. The transmission rod (18) passes through the connecting plate (2). The telescopic end of the connecting telescopic rod (8) is fixedly connected to a second sliding block (19), and the second sliding block (19) is connected to the extrusion block (9) in a limited sliding manner. A limit block (20) is fixedly connected to the connecting plate (2), the limit block (20) is in contact with the extrusion block (9), the limit block (20) is used to limit the position of the extrusion block (9), and a slope is provided on the lower side of the limit block (20), and the slope is used to guide the movement of the extrusion block (9).

8. A multi-stage buffer fender for ship protection according to claim 7, characterized in that: The angle between the upper inclined surface of the limit block (20) and the horizontal plane is less than 30°, which is used to reduce the downward movement distance of the extrusion block (9) when moving along the upper inclined surface of the limit block (20).

9. A multi-stage buffer fender for ship protection according to claim 7, characterized in that: The lower side surface of the extrusion rod (7) is lower than the lower side surface of the limiting block (20), so as to ensure that the extrusion rod (7) always squeezes the extrusion block (9).

10. A multi-stage buffer fender for ship protection according to claim 7, characterized in that: The fixing assembly comprises: A support plate (21) fixedly connected to the mounting plate (1), the support plate (21) being used to support the connecting plate (2); A limiting plate (22) is fixedly connected to the supporting plate (21), and the limiting plate (22) is used to fix the connecting plate (2).

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