Floating body offshore positioning system and positioning method thereof

Abstract

The invention belongs to a floating body seaborne positioning system in the technical field of seaborne floating bodies, and further relates to a positioning method of the floating body seaborne positioning system. Comprising a positioning pile frame (1), the positioning pile frame (1) is connected with a floating body (2), a fender seat (3) is arranged on the side face of the positioning pile frame (1), a buffer fender (4) is installed on the fender seat (3), a retracting and releasing mechanism (5) is connected to the positioning pile frame (1) and the floating body (2), the retracting and releasing mechanism (5) is connected with a piling mechanism (6), the piling mechanism (6) is connected with a positioning pile (7), and the positioning pile (7) movably penetrates through the buffer fender (4). The floating body seaborne positioning system is simple in structure, can conveniently and reliably complete seaborne positioning of the seaborne floating body through piling, and meets the positioning requirement of the seaborne floating body without peripheral expansion parts, the positioning piles are combined with the floating body to form a floating wharf, ship berthing operation is facilitated, and dismounting (pile pulling) is convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of offshore floating bodies, and more specifically, relates to a floating body offshore positioning system. The present invention also relates to a positioning method for the floating body offshore positioning system. Background Art

[0002] When setting up a floating dock at sea, it is necessary to locate the floating body of the dock platform at sea so as to reliably fix the dock platform in the operating position. At present, the commonly used methods for positioning ships or floating bodies are anchor positioning and dynamic positioning. Anchor positioning technology is mature and widely used, but multi-anchor positioning will expand outward, limiting the operating space and range of other ships on the floating dock. Dynamic positioning is easy to operate, but it consumes a lot of power and is difficult to carry the large berthing load of ships, and cannot form a stable floating operating dock. Specifically, the advantages of anchor positioning: high versatility. As a traditional positioning method for ships, almost all types of ships are equipped with anchors, and no additional positioning equipment is required. Disadvantages: The positioning effect is affected by various factors such as seabed geology, water flow, wind and waves, and the fluctuation range is large. There are certain requirements for the operating level of the operators, and multiple anchor points will expand outward, affecting the berthing of other ships. Advantages of ship dynamic positioning: high positioning accuracy. The position and attitude of the ship can be accurately controlled through the propulsion device and control system on the ship to achieve high-precision positioning. Disadvantages: The configuration, installation and operation costs of the dynamic positioning system are high, and regular maintenance and overhaul are required; the dynamic positioning system requires extremely high continuous power and is difficult to bear the large berthing load of the ship, and the existing technology is difficult to achieve a stable floating operation dock. Offshore positioning piles are used in offshore engineering construction. The advantages are that the pile foundation is firm and the bearing capacity is high; the disadvantage is that the positioning piles are mostly concrete piles or steel pipe piles with fixed pile foundations, which cannot adapt to the floating dock positioning operation occasions that require flexible mobile positioning, frequent pile planting and pile lifting. Therefore, there is room for improvement in the existing technology.

[0003] In the prior art, there is a technology named "floating body positioning pile" and the publication (announcement) number is "CN105329410B", which includes: a connecting column; and a buoyancy tank, which has a first cavity that is not connected to the seawater, and the buoyancy tank is fixedly connected to one end of the connecting column; a ballast tank, which is connected to the other end of the connecting column, and when the floating body positioning pile works in the seawater, the ballast tank is connected to the seawater; a truss, which is fixedly connected between the buoyancy tank and the ballast tank, and the length of the truss is not more than 50 meters. When the floating body positioning pile works in the seawater, the current can pass through the truss; the displacement of the buoyancy tank is not less than the total mass of the floating body positioning pile, and when the floating body positioning pile works in the seawater, the inclination angle generated by the external natural force is not more than 1 degree. The floating body positioning pile of the present invention can be stably positioned in the ocean without mooring, and is not prone to tilting and drifting.

[0004] However, this technology does not involve the technical problems and technical solutions of the present application. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in view of the shortcomings of the existing technology, a floating body offshore positioning system with a simple structure is provided, which can conveniently and reliably complete the offshore positioning of the offshore floating body by piling, meet the positioning needs of the offshore floating body without peripheral expansion components, and the positioning piles are combined with the floating body to form a floating dock, which is convenient for ship berthing operations and easy to dismantle (pull out piles).

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is:

[0007] The present invention is a floating offshore positioning system, comprising a positioning pile frame, the positioning pile frame is connected to a floating body, a fender seat is arranged on the side of the positioning pile frame, a buffer fender is installed on the fender seat, a retracting mechanism is connected to the positioning pile frame or the floating body, the retracting mechanism is connected to a piling mechanism, the piling mechanism is connected to a positioning pile, and the positioning pile moves through the buffer fender.

[0008] The positioning pile frame comprises a base, a left pile frame body, a right pile frame body, and a pile frame crossbeam. The base is connected to a floating body. The left pile frame body and the right pile frame body are fixedly arranged on the base. The pile frame crossbeam connects the left pile frame body and the right pile frame body.

[0009] A fender seat is arranged outside the left pile frame, and a buffer fender is installed in the hollow structure of the fender seat; a fender seat is arranged outside the right pile frame, and a buffer fender is installed in the hollow structure of the fender seat.

[0010] The piling mechanism is a pile hammer, and the left pile frame is provided with a retracting and extending mechanism, which is connected to the piling mechanism at the outer side of the left pile frame, and the piling mechanism at the outer side of the left pile frame is connected to a positioning pile, and the positioning pile connected to the piling mechanism at the left pile frame passes through the buffer fender at the outer side of the left pile frame.

[0011] The right pile frame is provided with a retracting and extending mechanism, which is connected to a piling mechanism at the outer side of the right pile frame, and the piling mechanism at the outer side of the right pile frame is connected to a positioning pile, and the positioning pile connected to the piling mechanism at the right pile frame passes through the buffer fender at the outer side of the right pile frame.

[0012] The retracting and releasing mechanism comprises a winch, a rope, a first fixed pulley, a second fixed pulley and a movable pulley, and the retracting and releasing mechanism is respectively arranged near the left pile frame and the right pile frame.

[0013] A first fixed pulley and a second fixed pulley are arranged on the upper part of the left pile frame, a movable pulley is arranged on the upper part of the pile driving mechanism of the left pile frame, one end of the rope is connected to the winch, and the other end of the rope passes around the first fixed pulley and the second fixed pulley, the movable pulley is connected to the rope seat of the left pile frame, and the winch close to the left pile frame is fixedly connected to the upper part of the floating body near the left side.

[0014] A first fixed pulley and a second fixed pulley are arranged on the upper part of the right pile frame, a movable pulley is arranged on the upper part of the pile driving mechanism of the right pile frame, one end of the rope is connected to the winch, and the other end of the rope passes around the first fixed pulley and the second fixed pulley, the movable pulley is connected to the rope seat of the right pile frame, and the winch close to the right pile frame is fixedly connected to the upper part of the floating body near the right side.

[0015] The seabed substrate includes mud or sand or muddy sand, and the mud or sand or muddy sand is configured to form a structure capable of forming a liquefied portion.

[0016] The present invention also relates to a method for positioning a floating body at sea with simple steps, which can conveniently and reliably complete the offshore positioning of the floating body by piling, meet the positioning needs of the floating body at sea without peripheral expansion components, the positioning piles are combined with the floating body to form a floating dock, which is convenient for ships to berth, and the removal (pulling of piles) is convenient for the positioning method of the floating body offshore positioning system. The positioning steps of the positioning method of the floating body offshore positioning system are:

[0017] S1. The positioning pile frame is arranged on the floating body;

[0018] S2. The retracting and releasing mechanism of the positioning pile frame is connected to the piling mechanism, and the positioning pile connected to the piling mechanism passes through the fender seat and the buffer fender on the outer side of the positioning pile frame;

[0019] S3. Control the retracting and releasing mechanism to release the rope, start the pile driving mechanism, and drive the positioning pile into the seabed. The pile driving mechanism uses high-frequency vibration when driving the positioning pile into the seabed, so that the soil structure of the seabed around the positioning pile is liquefied to form a liquefied part, thereby reducing the friction resistance between the pile and the soil. The positioning pile realizes the positioning of the floating body on the sea surface;

[0020] S4. When releasing the positioning of the floating body on the sea surface, the retracting and releasing mechanism is controlled to reel in the rope, driving the positioning pile to leave the seabed and releasing the positioning of the floating body.

[0021] The technical solution of the present invention is adopted, and the working principle and beneficial effects are as follows:

[0022] The floating body offshore positioning system of the present invention is provided with a positioning pile frame when the structure is set. The positioning pile frame is a frame structure. On the one hand, it is used to connect with the floating body, and on the other hand, it is used to arrange the fender seat, the retracting mechanism, the pile driving mechanism, and the positioning pile. The positioning pile frame is connected to the floating body and fixedly connected with the floating body, so that the positioning pile can reliably realize the offshore positioning of the floating body after being fixed at sea. A fender seat is arranged on the side of the positioning pile frame, and a buffer fender is installed on the fender seat. The fender seat cooperates with the buffer fender to position the positioning pile, ensuring that the positioning pile can move vertically up and down when the retracting mechanism is retracted and released, and when the retracting mechanism is not moved, it can reliably remain in place, or be inserted into the seabed to realize positioning, or leave the sea surface to maintain the released positioning state. The retracting mechanism is connected to the positioning pile frame or the floating body. When the retracting mechanism is retracted and released, it can drive the pile driving mechanism to rise and fall and move, so that the retracting mechanism controls the movement of the pile driving mechanism, the pile driving mechanism is connected to the positioning pile, and the positioning pile moves through the buffer fender, and the pile driving mechanism can realize the piling operation of the positioning pile. The positioning system of the present invention has the following working principle: the shore operation area of ​​the floating dock is mostly coastal cross currents and onshore waves. The positioning piles are arranged in pairs on the side of the buoy (dock buoy). The pile bodies of the positioning piles are deeply embedded in the seabed soil. The tangential friction of the seabed soil on the positioning piles fixes the positioning piles on the seabed soil of the seabed, and the buoy and the seabed soil are tightly connected together. The positioning piles and the stiffness set of the buffer fenders are matched to resist the effects of wind and wave currents on the buoy, and the buoy is prevented from drifting or moving under the action of water flow, wind or other external forces, ensuring that the buoy maintains a stable position when moored or operating, and realizing effective positioning of the offshore buoy. The positioning process of the positioning system of the present invention is: when the offshore buoy is used as a floating berthing dock, it usually operates in an area with a water depth of 7 to 10 meters. The seabed in this area is mostly muddy, sandy, and muddy and sandy. When driving piles, the vibration mechanism uses high-frequency vibration to liquefy the soil structure around the positioning piles on the seabed, forming a liquefied part, reducing the friction resistance between the pile body of the positioning pile and the seabed soil, and then the positioning pile is sunk by the pile body's own gravity to achieve pile planting. When pulling out piles, the vibration mechanism vibrates at a high frequency to liquefy the soil again, forming a liquefied part again. The power provided by the retractable mechanism pulls the positioning piles upward, completing the pulling out of the positioning piles and releasing the positioning of the floating body. During the process, the buffer fender separates the floating body from the positioning piles to avoid collisions between the positioning piles and the floating body. At the same time, it can effectively absorb the vibration energy during the driving or pulling out of piles, reduce the vibration force transmitted to the equipment and structure, and use the elastic stiffness of the buffer fender to effectively compensate for the displacement of the pile body caused by the impact of the berthing load on the floating body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following is a brief description of the contents and symbols in the drawings of this specification:

[0024] Figure 1 It is a structural schematic diagram of a positioning pile frame of a floating offshore positioning system according to the present invention;

[0025] Figure 2 It is a partial structural schematic diagram of the positioning pile frame of the floating offshore positioning system of the present invention;

[0026] Figure 3 It is a partial top view structural schematic diagram of the positioning pile frame of the floating offshore positioning system of the present invention;

[0027] Figure 4 It is a schematic diagram of the top view of the structure of the positioning pile frame of the floating body offshore positioning system of the present invention when positioning the floating body;

[0028] Figure 5 It is a schematic diagram of the side structure of the positioning pile frame of the floating body offshore positioning system of the present invention when positioning the floating body;

[0029] Figure 6 It is a schematic structural diagram of the positioning piles of the floating offshore positioning system of the present invention;

[0030] Figure 7 It is a schematic structural diagram of the floating marine positioning system of the present invention during marine positioning;

[0031] Figure 8 It is a schematic diagram of the structure of the floating offshore positioning system of the present invention during piling;

[0032] Fig. 9 It is a schematic structural diagram of the floating offshore positioning system of the present invention when pulling out piles;

[0033] The marks in the attached drawings are respectively: 1. positioning pile frame; 2. buoy (dock buoy); 3. fender seat; 4. buffer fender; 5. retracting and releasing mechanism; 6. piling mechanism; 7. positioning pile; 8. base; 9. left pile frame; 10. right pile frame; 11. pile frame beam; 12. winch; 13. rope; 14. first fixed pulley; 15. second fixed pulley; 16. movable pulley; 17. rope seat; 18. seabed; 19. liquefaction part; 20. sea surface. DETAILED DESCRIPTION

[0034] The following is a further detailed description of the specific implementation of the present invention, such as the shape, structure, mutual position and connection relationship between the various components involved, the function and working principle of each part, etc., through the description of the embodiments with reference to the accompanying drawings:

[0035] As attached Figure 1 -Attached Fig. 9As shown, the present invention is a floating offshore positioning system, including a positioning pile frame 1, the positioning pile frame 1 is connected to a floating body 2, a fender seat 3 is arranged on the side of the positioning pile frame 1, a buffer fender 4 is installed on the fender seat 3, a retracting mechanism 5 is connected to the positioning pile frame 1 and the floating body 2, the retracting mechanism 5 is connected to a pile driving mechanism 6, the pile driving mechanism 6 is connected to a positioning pile 7, and the positioning pile 7 moves through the buffer fender 4. The above structure proposes an improved technical solution to the deficiencies in the prior art. When the structure is set, a positioning pile frame 1 is set, and the positioning pile frame 1 is a frame structure. On the one hand, it is used to connect with the floating body, and on the other hand, it is used to arrange the fender seat 3, the retracting mechanism 5, the pile driving mechanism 6, and the positioning pile 7. The positioning pile frame 1 is connected to the floating body 2 and is fixedly connected to the floating body, so that the positioning pile 7 can reliably realize the offshore positioning of the floating body 2 after being fixed at sea. A fender seat 3 is provided on the side of the positioning pile frame 1, and a buffer fender 4 is installed on the fender seat 3. The fender seat 3 cooperates with the buffer fender 4 to position the positioning pile 7, ensuring that the positioning pile 7 can move vertically up and down when the retracting and releasing mechanism 5 is retracted, and when the retracting and releasing mechanism 5 is not in motion, it can reliably maintain its original position, or insert into the seabed substrate 18 to achieve positioning, or leave the sea surface 20 to maintain a released positioning state. The retracting and releasing mechanism 5 is connected to the positioning pile frame 1 and the floating body 2. When the retracting and releasing mechanism is retracted, it can drive the pile driving mechanism to rise and fall and move, so that the retracting and releasing mechanism 5 controls the movement of the pile driving mechanism 6, and the pile driving mechanism 6 is connected to the positioning pile 7. The positioning pile 7 moves through the buffer fender 4, and the pile driving mechanism can realize the pile driving operation of the positioning pile 7. The positioning system of the present invention has the following working principle: the operation area of ​​the floating dock shore is mostly coastal cross currents and onshore waves, and the positioning piles 7 are arranged in pairs on the side of the floating body (dock floating body), and the pile body of the positioning piles 7 is deeply embedded in the seabed soil. The tangential friction of the seabed soil on the positioning piles fixes the positioning piles on the seabed soil of the seabed substrate 18, and the floating body 2 is tightly connected with the seabed soil. Through the rigidity set of the positioning piles 7 and the buffer fender 4, the effect of wind and wave flow on the floating body 2 is resisted, and the floating body 2 is prevented from drifting or moving under the action of water flow, wind or other external forces, ensuring that the floating body 2 maintains a stable position when moored or operating, and realizing effective positioning of the offshore floating body. The positioning process of the positioning system of the present invention is: when the offshore floating body is used as a floating berthing dock, it usually operates in a water depth of 7 to 10 meters. The seabed substrate in this area is mostly mud, sand, and muddy sand. When driving piles, the vibration mechanism uses high-frequency vibration to liquefy the soil structure around the positioning pile 7 on the seabed, forming a liquefied portion 19, reducing the friction resistance between the pile body of the positioning pile 7 and the seabed soil, and then the positioning pile is sunk by the pile body's own gravity to achieve pile planting. When pulling out the pile, the vibration mechanism 6 vibrates at a high frequency to liquefy the soil again, forming a liquefied portion 19 again, and the power provided by the retracting mechanism 5 pulls the positioning pile 7 upward, completing the pulling out operation of the positioning pile 7 and releasing the positioning of the floating body 2.During the process, the buffer fender 4 separates the floating body 2 from the positioning pile 7 to avoid collision between the positioning pile 7 and the floating body 2. At the same time, it can effectively absorb the vibration energy during the pile driving or pile pulling process, reduce the vibration force transmitted to the equipment and structure, and use the elastic stiffness of the buffer fender to effectively compensate for the displacement of the pile body caused by the impact of the berthing load on the floating body 2. The floating body offshore positioning system described in the present invention has a simple structure and can conveniently and reliably complete the offshore positioning of the offshore floating body through piling, meeting the positioning needs of the offshore floating body without peripheral expansion components. The positioning piles are combined with the floating body to form a floating dock, which is convenient for ship berthing operations and easy to dismantle (pile pulling).

[0036] The positioning pile frame 1 comprises a base 8, a left pile frame body 9, a right pile frame body 10, and a pile frame cross beam 11. The base 8 is connected to the floating body 2, the left pile frame body 9 and the right pile frame body 10 are fixedly arranged on the base 8, and the pile frame cross beam 11 connects the left pile frame body 9 and the right pile frame body 10. With the above structure, when the floating body 2 needs to be positioned at sea, the positioning pile frame 1 can be reliably connected to the floating body 2 through the base, so that the floating body 2 and the positioning pile frame 1 are a fixed connection structure, and the arrangement of the left pile frame body 9 and the right pile frame body 10 facilitates the arrangement of positioning piles 7 on both sides of the floating body 2, and the positioning piles 7 on both sides are simultaneously positioned with the seabed soil, thereby ensuring the fixed reliability of the positioning of the floating body 2.

[0037] The fender seat 3 is arranged outside the left pile frame 9, and the buffer fender 4 is installed in the hollow structure of the fender seat 3. The fender seat 3 is arranged outside the right pile frame 10, and the buffer fender 4 is installed in the hollow structure of the fender seat 3. In the above structure, the buffer fender 4 is fixed to the inner ring of the fender seat 3, and the buffer fender 4 is made of high elastic rubber material or polyurethane material, in a "ring" shape, and wrapped around the outer ring of the positioning pile 7. The function of the buffer fender 4 is to alleviate the impact between the positioning pile and the pile frame, and to use the elastic stiffness of the buffer fender 4 to compensate for the displacement of the pile body caused by the load impact.

[0038] The piling mechanism 6 is a pile hammer, and the left pile frame 9 is provided with a retracting mechanism 5, the retracting mechanism 5 of the left pile frame 9 is connected to the piling mechanism 6 at the outer position of the left pile frame 9, the piling mechanism 6 at the outer position of the left pile frame 9 is connected to a positioning pile 7, and the positioning pile 7 connected to the piling mechanism 6 at the position of the left pile frame 9 passes through the buffer fender 4 at the outer position of the left pile frame 9.

[0039] The right pile frame 10 is provided with a retracting and extending mechanism 5, the retracting and extending mechanism 5 of the right pile frame 10 is connected to a piling mechanism 6 at the outer side of the right pile frame 10, the piling mechanism 6 at the outer side of the right pile frame 10 is connected to a positioning pile 7, and the positioning pile 7 connected to the piling mechanism 6 at the position of the right pile frame 10 passes through the buffer fender 4 at the outer side of the right pile frame 10.

[0040] The retracting and releasing mechanism 5 comprises a winch 12, a rope 13, a first fixed pulley 14, a second fixed pulley 15, and a movable pulley 16, and the retracting and releasing mechanism 5 is respectively arranged near the left pile frame 9 and the right pile frame 10. With the above structure, the retracting and releasing mechanism 5 provides power for the lifting and lowering operation of the positioning pile 7, and quickly realizes the lowering and lifting of the positioning pile 7. The winch 12 realizes the unwinding and reeling of the rope.

[0041] The first fixed pulley 14 and the second fixed pulley 15 are arranged on the upper part of the left pile frame 9, and the movable pulley 16 is arranged on the upper part of the pile driving mechanism 6 of the left pile frame 9. One end of the rope 13 is connected to the winch 12, and the other end of the rope 13 passes through the first fixed pulley 14 and the second fixed pulley 15. The movable pulley 16 is connected to the rope seat 17 of the left pile frame 9, and the winch 12 near the left pile frame 9 is fixedly connected to the upper part of the floating body 2 near the left side. The first fixed pulley 14 and the second fixed pulley 15 are arranged on the upper part of the right pile frame 10, and the movable pulley 16 is arranged on the upper part of the pile driving mechanism 6 of the right pile frame 10. One end of the rope 13 is connected to the winch 12, and the other end of the rope 13 passes through the first fixed pulley 14 and the second fixed pulley 15. The movable pulley 16 is connected to the rope seat 17 of the right pile frame 10, and the winch 12 near the right pile frame 10 is fixedly connected to the upper part of the floating body 2 near the right side. The above structure can reliably realize the lifting and lowering of the positioning piles on both sides through the retracting and extending mechanism 5 of the left pile frame 9 and the retracting and extending mechanism 5 of the right pile frame 10, thereby reliably realizing the positioning of the floating body and ensuring the stability of the floating body.

[0042] The seabed substrate 18 includes mud or sand or muddy sand, and the mud or sand or muddy sand is configured to form a structure capable of forming a liquefied portion 19. The liquefied portion 19 facilitates the insertion or removal of the positioning pile.

[0043] In the positioning system of the present invention, the floating body is generally a deck transport ship, an engineering operation ship, etc. for constructing a floating dock platform. The positioning pile frame 1 adopts a portal truss structure, and the base is welded or bolted to the deck of the floating body. The impact force of the positioning pile frame 1 is transmitted to the floating body 2 through the base; the fender seat 3 is welded and fixed to the positioning pile frame 1, and the inside of the fender seat 3 is an annular hollow structure and embedded with a buffer fender 4. The berthing load of the ship is transmitted to the fender seat 3 through the buffer fender 4, and the fender seat 3 transmits the load to the deck of the floating body 2 through the positioning pile frame 1 and the base; the positioning pile frame 1 is symmetrical on the left and right and is welded and connected by a pile frame crossbeam. The pile frame crossbeam connects the left and right pile frames into one, effectively balancing the impact force of the berthing load on both sides, providing the main structural support as the skeleton of the positioning pile system, and ensuring that the positioning pile system is stable and reliable as a whole. The main body of the positioning pile 7 is welded by steel pipes, the pile head is a solid strong structure, and the buffer fender is passed through the middle to form flexible friction. The top is connected to the pile driving mechanism, and the pile driving mechanism is connected to the retracting mechanism through a rope (which can be a steel cable). When not in operation, the positioning pile is hoisted on the top of the positioning pile frame. When in operation, the positioning pile is driven into the seabed soil layer through the cooperation of the pile driving mechanism and the retracting mechanism. The positioning pile frame and the fender seat are welded as a whole, and the buffer fender is installed in the fender seat. A certain radial gap is designed between the positioning pile and the buffer fender, and the positioning pile 7 can be freely lifted or lowered axially in the buffer fender 4. When the tide is high, the floating body 2 drives the positioning pile frame 1 to rise, and the buffer fender 4 is relatively raised. When the tide is low, the floating body 2 drives the positioning pile frame 1 to fall, and the buffer fender 4 is relatively lowered. During the process of rising and falling tides, the positioning pile 7 always maintains a positioning state, and there is no need to adjust the position of the floating body 2, so that the positioning of the floating body 2 is effective at full tide. The piling mechanism 6 is a pile hammer, which adopts a high-frequency vibration pile hammer. The high-frequency vibration of the pile hammer liquefies the soil that the pile head at the lower end of the positioning pile contacts, thereby reducing the friction of the soil on the pile body, and utilizing the deadweight of the pile body of the positioning pile to achieve rapid pile planting and positioning of the floating body. When pulling out the pile, the high-frequency vibration of the pile hammer liquefies the soil around the pile body again, thereby reducing the friction of the soil on the pile body, and the positioning pile can be quickly pulled out by lifting through the retracting and releasing mechanism to release the positioning of the floating body.

[0044] The present invention also relates to a method for positioning a floating body at sea with simple steps, which can conveniently and reliably complete the offshore positioning of the floating body by piling, meet the positioning needs of the floating body at sea without peripheral expansion components, the positioning piles are combined with the floating body to form a floating dock, which is convenient for ships to berth, and the removal (pulling of piles) is convenient for the positioning method of the floating body offshore positioning system. The positioning steps of the positioning method of the floating body offshore positioning system are:

[0045] S1. The positioning pile frame 1 is arranged on the floating body 2; S2. The retracting and releasing mechanism 5 of the positioning pile frame 1 is connected to the piling mechanism 6, and the positioning pile 7 connected to the piling mechanism 6 passes through the fender seat 3 and the buffer fender 4 outside the positioning pile frame 1; S3. The retracting and releasing mechanism 5 is controlled to release the rope 13, and the piling mechanism 6 is started to drive the positioning pile 7 into the seabed substrate 18. When the piling mechanism 6 drives the positioning pile 7 into the seabed substrate 18, high-frequency vibration is used to liquefy the soil structure of the seabed substrate 18 around the positioning pile 7 to form a liquefied part 19, reduce the friction resistance between the pile body and the soil body, and the positioning pile 7 realizes the positioning of the floating body 2 on the sea surface 20; S4. When the floating body 2 is released from the sea surface 20, the retracting and releasing mechanism 5 is controlled to retract the rope 13, drive the positioning pile 7 to leave the seabed substrate 18, and release the positioning of the floating body 2. The positioning method of the present invention realizes accurate and stable positioning of the floating body at sea, and the positioning pile can penetrate into the seabed to provide stable support for the floating dock, ensuring that no drift or movement occurs during the operation. There is no external extension area during positioning, which is convenient for various operating ships to berth. The deep pile planting can provide greater berthing force. The operation process is simple, and the speed of piling and pulling piles is fast.

[0046] The positioning system and positioning method of the present invention are as follows: 1. Offshore floating body positioning: the positioning piles 7 are driven into the seabed soil to resist the effects of wind, waves and currents on the floating body 2, thereby achieving reliable positioning of the floating body and facilitating the positioning of the floating body. 2. The positioning piles and buffer fenders in a flexible state are used in combination, and there is no need to adjust the state of the floating body and the positioning system during high and low tides, thereby achieving effective positioning of the floating body at full tide. 3. Positioning system composition: including positioning piles, positioning pile frames, buffer fenders, pile driving mechanisms, and retracting and releasing mechanisms. 4. Positioning system operation method: utilizing high-frequency vibration of a pile hammer to liquefy the soil around the pile body, and utilizing the deadweight of the pile body and the pulling force of a winch to achieve rapid pile driving and pulling. 5. Positioning pile frame structure: utilizing a portal truss structure to effectively transmit impact force and improve the stability of the pile frame.

[0047] The floating body offshore positioning system of the present invention is provided with a positioning pile frame 1. The positioning pile frame 1 is a frame structure. On the one hand, it is used to connect with the floating body, and on the other hand, it is used to arrange a fender seat 3, a retracting mechanism 5, a pile driving mechanism 6, and a positioning pile 7. The positioning pile frame 1 is connected to the floating body 2 and fixedly connected with the floating body, so that the positioning pile 7 can reliably realize the offshore positioning of the floating body 2 after being fixed at sea. A fender seat 3 is provided on the side of the positioning pile frame 1, and a buffer fender 4 is installed on the fender seat 3. The fender seat 3 cooperates with the buffer fender 4 to position the positioning pile 7, ensuring that the positioning pile 7 can move vertically up and down when the retracting mechanism 5 is retracted, and when the retracting mechanism 5 is not in motion, it can reliably remain in place, or be inserted into the seabed substrate 18 to achieve positioning, or leave the sea surface 20 to maintain the released positioning state. The retracting and releasing mechanism 5 is connected to the positioning pile frame 1 or the floating body 2. When the retracting and releasing mechanism is retracted and released, it can drive the piling mechanism to rise and fall and move, so that the retracting and releasing mechanism 5 controls the movement of the piling mechanism 6. The piling mechanism 6 is connected to the positioning pile 7. The positioning pile 7 moves through the buffer fender 4, and the piling mechanism can realize the piling operation of the positioning pile 7. The positioning system of the present invention has the following working principle: the shore operation area of ​​the floating dock is mostly coastal cross currents and shoreward waves. The positioning piles 7 are arranged in pairs on the side of the floating body (dock floating body). The pile body of the positioning pile 7 is deeply embedded in the seabed soil. The tangential friction force of the seabed soil on the positioning pile makes the positioning pile fixed on the seabed soil of the seabed bottom 18, and the floating body 2 is tightly connected with the seabed soil. Through the rigidity set of the positioning pile 7 and the buffer fender 4, the effect of wind and wave flow on the floating body 2 is resisted, and the floating body 2 is prevented from drifting or moving under the action of water flow, wind or other external forces, ensuring that the floating body 2 maintains a stable position when moored or operating, and realizing effective positioning of the offshore floating body. The positioning process of the positioning system of the present invention is as follows: when the offshore floating body is used as a floating berthing dock, it usually operates in a water depth of 7 to 10 meters. The seabed in this area is mostly mud, sand, and muddy sand. When driving piles, the vibration mechanism uses high-frequency vibration to liquefy the soil structure around the positioning pile 7 on the seabed to form a liquefied part 19, reduce the friction resistance between the pile body of the positioning pile 7 and the seabed soil, and then sink the positioning pile by the pile body's own gravity to achieve pile planting. When pulling out piles, the vibration mechanism 6 vibrates at a high frequency to liquefy the soil again, forming a liquefied part 19 again. The power provided by the retractable mechanism 5 pulls the positioning pile 7 upward, completes the pulling out operation of the positioning pile 7, and releases the positioning of the floating body 2. During the process, the buffer fender 4 separates the floating body 2 from the positioning pile 7 to avoid collision between the positioning pile 7 and the floating body 2. At the same time, it can effectively absorb the vibration energy during the pile driving or pulling out process, reduce the vibration force transmitted to the equipment and structure, and use the elastic stiffness of the buffer fender to effectively compensate for the displacement of the pile body caused by the impact of the berthing load on the floating body 2.

[0048] The present invention is described exemplarily below in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A floating marine positioning system, characterized in that: The invention comprises a positioning pile frame (1), the positioning pile frame (1) is connected to a floating body (2), a fender seat (3) is arranged on the side of the positioning pile frame (1), a buffer fender (4) is installed on the fender seat (3), a retracting mechanism (5) is connected to the positioning pile frame (1) and the floating body (2), the retracting mechanism (5) is connected to a pile driving mechanism (6), the pile driving mechanism (6) is connected to a positioning pile (7), and the positioning pile (7) moves through the buffer fender (4).

2. The floating offshore positioning system according to claim 1, characterized in that: The positioning pile frame (1) comprises a base (8), a left pile frame body (9), a right pile frame body (10), and a pile frame cross beam (11); the base (8) is connected to the floating body (2); the left pile frame body (9) and the right pile frame body (10) are fixedly arranged on the base (8); and the pile frame cross beam (11) connects the left pile frame body (9) and the right pile frame body (10).

3. The floating offshore positioning system according to claim 2, characterized in that: A fender seat (3) is arranged outside the left pile frame (9), and a buffer fender (4) is installed in the hollow structure of the fender seat (3); a fender seat (3) is arranged outside the right pile frame (10), and a buffer fender (4) is installed in the hollow structure of the fender seat (3).

4. The floating offshore positioning system according to claim 2 or 3, characterized in that: The piling mechanism (6) is a pile hammer. The left pile frame (9) is provided with a retracting mechanism (5). The retracting mechanism (5) of the left pile frame (9) is connected to the piling mechanism (6) at the outer position of the left pile frame (9). The piling mechanism (6) at the outer position of the left pile frame (9) is connected to a positioning pile (7). The positioning pile (7) connected to the piling mechanism (6) at the position of the left pile frame (9) passes through the buffer fender (4) at the outer position of the left pile frame (9).

5. The floating offshore positioning system according to claim 2 or 3, characterized in that: The right pile frame (10) is provided with a retracting and extending mechanism (5), the retracting and extending mechanism (5) of the right pile frame (10) is connected to a piling mechanism (6) at an outer position of the right pile frame (10), the piling mechanism (6) at an outer position of the right pile frame (10) is connected to a positioning pile (7), and the positioning pile (7) connected to the piling mechanism (6) at the position of the right pile frame (10) passes through the buffer fender (4) at an outer position of the right pile frame (10).

6. The floating offshore positioning system according to claim 5, characterized in that: The retracting and releasing mechanism (5) comprises a winch (12), a rope (13), a first fixed pulley (14), a second fixed pulley (15), and a movable pulley (16). The retracting and releasing mechanism (5) is respectively arranged near the left pile frame (9) and the right pile frame (10).

7. The floating offshore positioning system according to claim 6, characterized in that: A first fixed pulley (14) and a second fixed pulley (15) are arranged on the upper part of the left pile frame (9); a movable pulley (16) is arranged on the upper part of the pile driving mechanism (6) of the left pile frame (9); one end of a rope (13) is connected to a winch (12); the other end of the rope (13) passes around the first fixed pulley (14) and the second fixed pulley (15); the movable pulley (16) is connected to a rope seat (17) of the left pile frame (9); and the winch (12) close to the left pile frame (9) is fixedly connected to the upper part of the floating body (2) near the left side.

8. The floating offshore positioning system according to claim 6, characterized in that: A first fixed pulley (14) and a second fixed pulley (15) are arranged on the upper part of the right pile frame (10); a movable pulley (16) is arranged on the upper part of the pile driving mechanism (6) of the right pile frame (10); one end of a rope (13) is connected to a winch (12); the other end of the rope (13) passes around the first fixed pulley (14) and the second fixed pulley (15); the movable pulley (16) is connected to a rope seat (17) of the right pile frame (10); and the winch (12) close to the right pile frame (10) is fixedly connected to the upper part of the floating body (2) near the right side.

9. The floating offshore positioning system according to claim 1, characterized in that: The seabed sediment (18) includes mud or sand or muddy sand, and the mud or sand or muddy sand is arranged to form a structure capable of forming a liquefied portion (19).

10. A positioning method for a floating marine positioning system, characterized in that: The positioning steps of the positioning method of the floating body offshore positioning system are as follows: S1. The positioning pile frame (1) is arranged on the floating body (2); S2. The retracting mechanism (5) of the positioning pile frame (1) is connected to the piling mechanism (6), and the positioning pile (7) connected to the piling mechanism (6) passes through the fender seat (3) and the buffer fender (4) on the outside of the positioning pile frame (1); S3. Control the retracting and releasing mechanism (5) to release the rope (13), start the pile driving mechanism (6), and drive the positioning pile (7) into the seabed (18). When the pile driving mechanism (6) drives the positioning pile (7) into the seabed (18), high-frequency vibration is used to liquefy the soil structure of the seabed (18) around the positioning pile (7), forming a liquefied portion (19), reducing the friction resistance between the pile body and the soil body, and the positioning pile (7) realizes the positioning of the floating body (2) on the sea surface (20); S4. When the floating body (2) is released from its position on the sea surface (20), the retracting and releasing mechanism (5) is controlled to reel in the rope (13), thereby driving the positioning pile (7) to leave the seabed (18) and releasing the floating body (2).

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