A non-pushing berthing method for a semi-submersible three-cylinder floating body

Abstract

The present invention discloses a non-pushing berthing method for a semi-submersible three-cylinder floating body, which relates to the field of offshore wind power technology, and comprises the following steps: Step 1: firstly, a truck crane and a forklift are prepared in place, and one truck crane and one forklift are respectively placed at two predetermined column berthing positions, and then the truck crane is used to lower a berthing ball into the water through a positioning device, and at the same time, the berthing ball is placed on a placement plate on the positioning device; the semi-submersible three-cylinder floating body is finally precisely positioned close to the berthing ball through the coordinated operation of the forklift and the tugboat, thereby avoiding the risk of personnel directly barging to the semi-submersible three-cylinder platform in an incompletely stable state for cable bringing, reducing the influence of the complex hydrological environment of the dock on the berthing operation of the semi-submersible platform, and reducing the limitation of the dock's own range on the berthing operation of the floating body. The technical invention can adapt to the berthing of various types of large floating bodies, has a wide range of applications, and is conducive to promoting the development of towing transportation of marine engineering equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power generation, and in particular to a non-top-pushing berthing method for a semi-submersible three-cylinder floating body. Background Art

[0002] In the field of offshore floating wind power, in order to reduce the manufacturing cost of the foundation platform of wind turbines, the new floating wind power foundation platform usually adopts a semi-submersible three-cylinder structure. Due to the influence of water depth and the heave plate at the bottom of the floating cylinder, it is not possible to choose a tugboat push berthing method; the limited range of the dock berth and the small main towing force of the port tugboat limit the berthing of the floating body directly by tugboat towing; and the inherent mooring equipment on the upper deck of the platform is usually more than ten meters above the water surface, and the vertical angle with the dock mooring facilities is too large, which cannot be used for dock berthing in the case of strong winds and waves or rapid water flow; therefore, it is very necessary to design a non-push berthing method for submersible three-cylinder floating bodies. Summary of the invention

[0003] The purpose of the present invention is to provide a non-pushing berthing method for a semi-submersible three-cylinder floating body, and to solve the following technical problems:

[0004] There are various problems when the terminal berth space is limited, the hydrological conditions are complex, the port tugboats are not powerful enough, and the semi-submersible three-cylinder buoy cannot be berthed by tugboat push.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A semi-submersible three-cylinder floating body non-pushing berthing method comprises the following steps:

[0007] Step 1: First, prepare the truck crane and forklift in place, place one truck crane and one forklift at each of the two predetermined column berthing positions, then use the truck crane to lower the berthing ball into the water through the positioning device, and at the same time place the berthing ball on the placement plate on the positioning device, then start the electric telescopic rod to drive the push plate to retract upward in the movable groove, so that the placement plate moves downward under the action of the gravity of the berthing ball and squeezes the second spring, so that the berthing ball falls accurately on the water surface under the protection of the positioning plate, and then fix the rope on the berthing ball on the dock;

[0008] Step 2: Then prepare the cable materials and the floating body before towing into the port. Then, the towing fleet will tow the floating body to the turning waters and adjust the direction. Two tugboats will form an eight-shaped shape with the front of the dock, so that the double columns of the floating body are parallel to the front surface of the dock, and slowly approach the dock by inertia. When the two tugboats with parallel columns have already sideways to the dock, the floating body is still a certain distance away from the dock. First, complete the cable of the tugboat itself;

[0009] Step 3: At this time, the workers take the cage through the truck crane and go to the two pillars of the floating body to install the cable. After the two forklifts are connected, the two tugboat winches tighten the main towline and increase their own horsepower to pull parallel to the left and right. The forklifts on the left and right sides are also started synchronously to drag inward in a direction perpendicular to the sideline of the dock;

[0010] Step 4: Finally, the semi-submersible three-cylinder floating body is precisely positioned close to the berthing ball through the coordinated operation of the forklift and the tugboat. When the berthing ball is subjected to force, the floating system mooring cable is prepared. First, the cross cables are tightened, and the two polymer cables originally connected by the forklift are released. They are tied to the dock piles in the form of cross cables, and the main towline connection of the tugboat is released to complete the final berthing of the floating body. This technology is suitable for various situations where the dock berthing space is limited, the hydrological conditions are complex, the port tugboat has insufficient power, and the semi-submersible three-cylinder floating body cannot be berthed by tugboat. The precise berthing of the floating body is completed through the coordinated cooperation of simple mechanical equipment such as traction tugboats, car cranes and forklifts.

[0011] This technical invention has the advantages of strong universality, good stability, and high safety factor. It overcomes the difficulties of large floating bodies berthing under various dock restrictions and significantly improves the construction efficiency of large floating bodies berthing. In addition, this technical invention is simple to operate and highly safe, reducing the difficulty of large semi-submersible three-cylinder berthing.

[0012] As a further solution of the present invention: the positioning device includes a base, an adjusting plate is rotatably installed on the base, a placing plate is rotatably installed on the adjusting plate, a positioning plate is fixedly installed on the side of the adjusting plate close to the placing plate, an adjusting component is arranged on the adjusting plate, the adjusting component includes an electric telescopic rod, a movable groove is opened on the side of the adjusting plate close to the positioning plate, the placing plate is rotatably installed in the movable groove, the electric telescopic rod is fixedly installed on the inner wall of the movable groove, a pushing plate is fixedly installed on one end of the electric telescopic rod close to the placing plate, a second spring is fixedly installed on the side of the placing plate away from the pushing plate, an extension plate is fixedly installed on the positioning plate, a telescopic plate is arranged on the extension plate, an elastic component is arranged on the adjusting plate, and a lifting component is arranged on the base.

[0013] As a further solution of the present invention: one end of the second spring away from the placement plate is installed on the inner wall of the movable groove, the push plate is slidingly fitted with the inner bottom wall of the movable groove, the push plate is tightly fitted with the placement plate, and a calibration plate is fixedly installed on the side of the positioning plate close to the electric telescopic rod.

[0014] As a further solution of the present invention: a floating plate is fixedly installed on one end of the telescopic plate away from the extension plate, a telescopic groove is opened in the extension plate, the telescopic plate is slidably installed in the telescopic groove, waist-shaped through holes are opened on the inner walls on both sides of the telescopic groove, sliding columns are slidably installed in the waist-shaped through holes, and the end of the sliding column close to the telescopic groove is fixedly installed on the telescopic plate.

[0015] As a further solution of the present invention: the elastic component includes a first spring, an installation groove is opened at one end of the base close to the positioning plate, a movable hook is slidably installed in the installation groove, a protective ring is fixedly installed on the side of the adjustment plate close to the installation groove, the first spring is fixedly installed on the side of the movable hook close to the protective ring, and a pull rope is fixedly installed on the side of the movable hook close to the first spring.

[0016] As a further solution of the present invention: one end of the first spring away from the movable hook is fixedly installed on the inner wall of the installation groove, a guide rod is slidably installed on the movable hook, both ends of the guide rod are fixedly installed on the inner wall of the installation groove, the first spring is nested on the outer surface of the guide rod, and the pull rope slides through the protective ring.

[0017] As a further solution of the present invention: the lifting assembly includes a lifting plate, a movable groove is opened on the side of the base close to the adjusting plate, a bidirectional screw is rotatably installed in the movable groove, sliders are installed through the threads at both ends of the bidirectional screw, connecting plates are installed on the side of the two sliders close to the adjusting plate, the lifting plate is rotatably installed between the two connecting plates, and a motor is fixedly installed on the base.

[0018] As a further solution of the present invention: a contact plate is rotatably installed on one side of the lifting plate close to the adjusting plate, the top surface of the contact plate is slidingly fitted with the bottom surface of the adjusting plate, and the output end of the motor slides through the movable slot and is fixedly installed on the bidirectional screw.

[0019] As a further solution of the present invention: a balance bar is slidably installed on the sliding block, and both ends of the balance bar are fixedly installed on the inner wall of the moving groove.

[0020] Beneficial effects of the present invention:

[0021] (1) The semi-submersible three-cylinder floating body is finally accurately positioned close to the berthing ball through the coordinated operation of the forklift and the tugboat, avoiding the risk of personnel directly barging to the semi-submersible three-cylinder platform in an incompletely stable state to carry out cable pulling, reducing the impact of the complex hydrological environment of the dock on the berthing operation of the semi-submersible platform, and reducing the restrictions of the dock's own range on the berthing operation of the floating body. When the tugboat cannot push and the direct traction force is insufficient, the berthing is completed by the cooperation of the shore-based forklift and the truck crane. The technical invention has the advantages of strong universality, good stability, and high safety factor. It overcomes the difficulties of large-scale floating body berthing under various dock restrictions, significantly improves the construction efficiency of large-scale floating body berthing, and has simple construction operation and high safety, reducing the difficulty of large-scale semi-submersible three-cylinder berthing.

[0022] (2) The adjusting component drives the bidirectional screw rod through the motor to push the lifting plate to adjust the tilt angle of the adjusting plate, and then the automobile crane places the leaning ball on the placement plate, and then starts the electric telescopic rod to drive the pushing plate to be retracted upward in the movable groove, so that the placement plate moves downward under the action of the gravity of the leaning ball and squeezes the second spring. At the same time, the leaning ball moves to the water surface under the protection of the positioning plate, which is convenient for positioning and protecting the leaning ball, and tries to avoid the situation that the position of the leaning ball is not convenient to fix under the action of wind and waves on the water surface, which is convenient for positioning and protecting the leaning ball below, which is conducive to improving the positioning stability of the device and the working efficiency of the staff below the leaning ball;

[0023] (3) The elastic component pulls the pull rope to drive the movable hook to slide in the installation groove, and at the same time, the movable hook squeezes the first spring, and at the same time, the movable hook hooks the rope of the ball to one side, which is convenient for the staff to take, and then fixes the rope of the ball to the dock, which is convenient for operation and use, and is easy to hook the rope, which is beneficial to improve the stability of the ball and the work efficiency of the staff in fixing the ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the dock mechanical equipment of the present invention in place;

[0026] Figure 2 This is a schematic diagram of the tugboat towing and berthing of the present invention;

[0027] Figure 3 It is a schematic diagram of the linkage traction of a tugboat and a forklift of the present invention;

[0028] Figure 4 It is a schematic diagram of the tugboat and forklift linkage towing and berthing of the present invention;

[0029] Figure 5 This is the final schematic diagram of the floating body mooring cable of the present invention;

[0030] Figure 6 It is a schematic diagram of the overall structure of the positioning device of the present invention;

[0031] Figure 7 is a schematic diagram of the overall side view structure of the positioning device of the present invention;

[0032] Figure 8 yes Figure 7 A schematic diagram of the enlarged structure at A in the middle;

[0033] Fig. 9 yes Figure 7 A schematic diagram of the enlarged structure at B in the middle;

[0034] Fig.10 is a schematic diagram of the upward structural view of the positioning device of the present invention;

[0035] Fig.11 yes Fig.10 Schematic diagram of the enlarged structure at point C in the middle.

[0036] In the figure: 1. base; 2. adjustment plate; 3. positioning plate; 4. placement plate; 5. calibration plate; 6. lifting assembly; 61. moving slot; 62. motor; 63. balance bar; 64. bidirectional screw; 65. slider; 66. connecting plate; 67. lifting plate; 68. contact plate; 7. elastic assembly; 71. mounting slot; 72. guide rod; 73. first spring; 74. pull rope; 75. protective ring; 76. moving hook; 8. adjustment assembly; 81. movable slot; 82. electric telescopic rod; 83. push plate; 84. second spring; 85. floating plate; 86. telescopic plate; 87. extension plate; 88. waist-shaped through hole; 89. sliding column; 810. telescopic slot. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1

[0039] See also Figure 1 - Fig.11 As shown, the present invention is a semi-submersible three-cylinder floating body non-pushing berthing method, comprising the following steps:

[0040] Step 1: First, prepare the truck crane and forklift in place, and adopt the double-column parallel dock berthing. Place a truck crane and a forklift at each of the two predetermined column berthing positions. Then, the truck crane lowers the berthing ball into the water through the positioning device, and at the same time, the berthing ball is placed on the placement plate 4 on the positioning device. Then, start the electric telescopic rod 82 to drive the push plate 83 to be recovered upward in the movable groove 81, so that the placement plate 4 moves downward under the action of the gravity of the berthing ball and squeezes the second spring 84, so that the berthing ball accurately falls to the water surface under the protection of the positioning plate 3, and then fix the rope on the berthing ball to the dock to prevent the floating body heave plate from colliding with the dock;

[0041] Step 2: Then prepare the cable materials and the preparations before the floating body is towed into the port. Before the floating body is towed, the polymer cable is connected to the towing eye plate of the floating body column in advance. One end is connected to the towing eye plate through a shackle, and the other end can be wrapped around the surrounding sacrificial anode zinc block according to the actual situation. Each floating body column has two towing eye plates, and each towing eye plate is hung with a polymer cable in advance. Before the floating body is towed into the port, the port full-revolving tugboat and the main tugboat are towed in advance at the port anchorage. At this time, there are three tugboats connected to the three cylindrical cabins of the floating body through movable towing rigging, which is more It is more convenient and flexible to tow and control the floating body. Then the towing fleet tows the floating body to the turning waters and adjusts the direction. Two tugboats are in an eight-shaped shape with the front of the dock, so that the double columns of the floating body are parallel to the front of the dock. The floating body is slowly approaching the dock by inertia. When the two tugboats with parallel columns have already leaned against the dock, the floating body is still a certain distance away from the dock. The tugboats are first completed with their own cables. After the two tugboats with parallel columns have completed the cable, the tugboats release their own main towing cables and use the pre-installed car cranes to moor the towing locks of the two tugboats to the dock mooring piles in the form of return cables;

[0042] Step 3: At this time, the workers take the cage through the car crane and go to the two pillars of the floating body to install the cable. One end of the polymer cable arranged on the floating body for mooring is towed to the shore (the other end has been connected to the towing eye plate through a shackle before towing), and its annular lute head is connected to two forklifts. The other one is towed to the shore and moored on the dock pile in the form of an eight-shaped cable. After the two forklifts are connected, the two tugboat winches tighten the main towline and increase their own horsepower to pull parallel to the left and right. The forklifts on the left and right sides are also started synchronously and dragged inward in a direction perpendicular to the dock sideline. Under the intermittent traction of the tugboat and forklift, the floating body slowly approaches the front of the dock due to inertia. Every time it gets closer, the workers tighten the cross cable pile one more circle;

[0043] Step 4: Finally, the semi-submersible three-cylinder buoy is precisely positioned close to the berthing ball through the coordinated operation of the forklift and tugboat. After the berthing ball is subjected to force, the buoy mooring cable is prepared. First, the cross cables are tightened, and the two polymer cables originally connected by the forklift are released. They are tied to the dock piles in the form of cross cables, and the main towline connection of the tugboat is released to complete the final berthing of the buoy.

[0044] The positioning device includes a base 1, on which an adjustment plate 2 is rotatably mounted, on which a placement plate 4 is rotatably mounted, and the placement plate 4 cooperates with the adjustment plate 2 to receive the ball lifted by the automobile crane, and a positioning plate 3 is fixedly mounted on the side of the adjustment plate 2 close to the placement plate 4, and the positioning plate 3 plays a role in positioning protection, and an adjustment component 8 is arranged on the adjustment plate 2, and the adjustment component 8 includes an electric telescopic rod 82, and a movable groove 81 is opened on the side of the adjustment plate 2 close to the positioning plate 3, and the placement plate 4 is rotatably mounted in the movable groove 81, and the electric telescopic rod 82 is fixedly installed on the inner wall of the movable groove 81, and a pushing plate 83 is fixedly installed on the end of the electric telescopic rod 82 close to the placement plate 4. The electric telescopic rod 82 drives the pushing plate 83 to fix the placement plate 4. A second spring 84 is fixedly installed on the side of the placement plate 4 away from the pushing plate 83. The second spring 84 drives the placement plate 4 to reset. An extension plate 87 is fixedly installed on the positioning plate 3, and a telescopic plate 86 is arranged on the extension plate 87. An elastic component 7 is arranged on the adjustment plate 2, and a lifting component 6 is arranged on the base 1.

[0045] The end of the second spring 84 away from the placement plate 4 is installed on the inner wall of the movable groove 81, and the pushing plate 83 is slidably fitted with the inner bottom wall of the movable groove 81, and the pushing plate 83 is tightly fitted with the placement plate 4. The calibration plate 5 is fixedly installed on the side of the positioning plate 3 close to the electric telescopic rod 82. The calibration plate 5 improves the accuracy of placing the ball on the placement plate 4. The end of the telescopic plate 86 away from the extension plate 87 is fixedly installed with a floating plate 85. The buoyancy of the floating plate 85 on the water surface drives the telescopic plate 86 to slide in the extension plate 87. A telescopic groove 810 is provided in the extension plate 87. The telescopic plate 86 is slidably installed in the telescopic groove 810. The inner walls on both sides of the telescopic groove 810 are provided with waist-shaped through holes 88. Sliding columns 89 are slidably installed in the waist-shaped through holes 88. The end of the sliding column 89 close to the telescopic groove 810 is fixedly installed on the telescopic plate 86. The telescopic plate 86 slides in the telescopic groove 810, and at the same time drives the sliding column 89 to slide in the waist-shaped through hole 88 When the device is used, firstly, the car crane places the leaning ball on the placement plate 4 with the assistance of the calibration plate 5, and then starts the electric telescopic rod 82, so that the electric telescopic rod 82 drives the pushing plate 83 to be recovered upward in the movable groove 81, so that the placement plate 4 moves downward under the action of the gravity of the leaning ball and squeezes the second spring 84, so that the second spring 84 is in a compressed state. At the same time, the leaning ball moves to the water surface under the protection of the positioning plate 3, and at the same time, the floating plate 85 floats on the water surface, so that the floating plate 85 drives the telescopic plate 86 to retract into the telescopic groove 810, and at the same time, the telescopic plate 86 drives the sliding column 89 to slide in the waist-shaped through hole 88, so as to facilitate the positioning and protection of the leaning ball, so that the leaning ball falls to the accurate position and then fixes the leaning ball, and tries to avoid the situation that the position of the leaning ball is not convenient to be fixed under the action of wind and waves on the water surface, and it is convenient to position the leaning ball below the protection, which is beneficial to improve the positioning stability of the device and the working efficiency of the leaning ball below.

[0046] Embodiment 2

[0047] See also Fig.10 - Fig.11As shown, the elastic component 7 includes a first spring 73, a mounting groove 71 is provided at one end of the base 1 close to the positioning plate 3, a movable hook 76 is slidably installed in the mounting groove 71, and the movable hook 76 is convenient for hooking the ball-receiving rope in the middle position to one side, so as to facilitate the staff to take it and fix the ball-receiving rope on the dock, a protective ring 75 is fixedly installed on the side of the adjustment plate 2 close to the mounting groove 71, and the protective ring 75 plays the role of protecting the fixed pull rope 74, the first spring 73 is fixedly installed on the side of the movable hook 76 close to the protective ring 75, and a pull rope 74 is fixedly installed on the side of the movable hook 76 close to the first spring 73, and the pull rope 74 plays the role of pulling the movable hook 76 to slide in the mounting groove 71, and the end of the first spring 73 away from the movable hook 76 is fixedly installed on the inner wall of the mounting groove 71, and a guide rod 72 is slidably installed on the movable hook 76, and the guide rod 72 The first spring 73 is nested on the outer surface of the guide rod 72, and the pull rope 74 slides through the protective ring 75. The first spring 73 plays a role in driving the movable hook 76 to elastically reset. When using the device, the pull rope 74 is first pulled to make the pull rope 74 slide in the protective ring 75 and drive the movable hook 76 to slide in the mounting groove 71, and at the same time, the movable hook 76 slides on the guide rod 72 and squeezes the first spring 73, so that the first spring 73 is in a compressed state, and at the same time, the movable hook 76 hooks the rope of the ball to one side, which is convenient for the staff to take, and then the rope of the ball is fixed to the dock, which is convenient for operation and use, and it is convenient to hook the rope, which is conducive to improving the stability of the ball and the work efficiency of the staff in fixing the ball.

[0048] Embodiment 3

[0049] See also Figure 6 - Figure 8As shown, the lifting assembly 6 includes a lifting plate 67, a moving groove 61 is opened on the side of the base 1 close to the adjusting plate 2, and a bidirectional screw 64 is rotatably installed in the moving groove 61. Slide blocks 65 are installed through the threads at both ends of the bidirectional screw 64, and connecting plates 66 are installed on the side of the two slide blocks 65 close to the adjusting plate 2. The connecting plate 66 drives the lifting plate 67 to push the adjusting plate 2 under the action of the slide blocks 65, so as to adjust the inclination angle of the adjusting plate 2 and stably receive the ball. The lifting plate 67 is rotatably installed between the two connecting plates 66, and a motor 62 is fixedly installed on the base 1. A contact plate 68 is rotatably installed on the side of the lifting plate 67 close to the adjusting plate 2. The top surface of the contact plate 68 is slidably fitted with the bottom surface of the adjusting plate 2, which is beneficial to improve the stability of the adjustment of the adjusting plate 2, and the output end of the motor 62 slides through the moving groove 61 is fixedly installed on the bidirectional screw 64, and a balance bar 63 is installed on the slider 65 for sliding through. The two ends of the balance bar 63 are fixedly installed on the inner wall of the moving groove 61. The balance bar 63 plays a role in balancing and stabilizing the slider 65, which is beneficial to improving the stability of the slider 65 in the moving groove 61. When using the device, first start the motor 62, so that the output end of the motor 62 drives the bidirectional screw 64 to rotate, so that the bidirectional screw 64 drives the slider 65 to move relatively in the moving groove 61, and at the same time, the slider 65 slides on the balance bar 63, and at the same time, the slider 65 drives the connecting plate 66 to push the lifting plate 67 upward, so that the lifting plate 67 drives the contact plate 68 to slide on the adjustment plate 2, so as to facilitate the lifting and lowering adjustment of the adjustment plate 2. The inclination angle, which is beneficial to improving the flexibility of the device, is beneficial to improving the adjustment ability of the lifting and lowering of the device.

[0050] Working principle of the present invention: When using the device, first start the motor 62, so that the output end of the motor 62 drives the bidirectional screw 64 to rotate, so that the bidirectional screw 64 drives the slider 65 to move relatively in the movable groove 61, and at the same time, the slider 65 slides on the balance bar 63, and at the same time, the slider 65 drives the connecting plate 66 to push the lifting plate 67 upward, so that the lifting plate 67 drives the contact plate 68 to slide on the adjustment plate 2 to adjust the inclination angle of the adjustment plate 2, and then the car crane places the leaning ball on the placement plate 4 with the assistance of the calibration plate 5, and then starts the electric telescopic rod 82, so that the electric telescopic rod 82 drives the push plate 83 to be recovered upward in the movable groove 81, so that the placement plate 4 moves downward and squeezes under the action of the gravity of the leaning ball The second spring 84 makes the second spring 84 in a compressed state, and at the same time, the ball moves to the water surface under the protection of the positioning plate 3, and at the same time, the floating plate 85 floats on the water surface, so that the floating plate 85 drives the telescopic plate 86 to retract into the telescopic groove 810, and at the same time, the telescopic plate 86 drives the sliding column 89 to slide in the waist-shaped through hole 88, and finally pulls the pull rope 74, so that the pull rope 74 slides in the protective ring 75 and drives the movable hook 76 to slide in the installation groove 71, and at the same time, the movable hook 76 slides on the guide rod 72 and squeezes the first spring 73, so that the first spring 73 is in a compressed state, and at the same time, the movable hook 76 hooks the rope of the ball to one side, which is convenient for the staff to take, and then fixes the rope of the ball to the dock.

[0051] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A non-pushing berthing method for a semi-submersible three-cylinder floating body. Features: The following steps are involved: Step 1: First, prepare the truck crane and forklift in place, place one truck crane and one forklift at each of the two predetermined column berthing positions, then use the truck crane to lower the berthing ball into the water through the positioning device, and at the same time place the berthing ball on the placement plate (4) on the positioning device, then start the electric telescopic rod (82) to drive the push plate (83) to retract upward in the movable groove (81), so that the placement plate (4) moves downward under the action of the gravity of the berthing ball and squeezes the second spring (84), so that the berthing ball accurately falls onto the water surface under the protection of the positioning plate (3), and then fix the rope on the berthing ball to the dock; Step 2: Then prepare the cable materials and the floating body before towing into the port. Then, the towing fleet will tow the floating body to the turning waters and adjust the direction. Two tugboats will form an eight-shaped shape with the front of the dock, so that the double columns of the floating body are parallel to the front surface of the dock, and slowly approach the dock by inertia. When the two tugboats with parallel columns have already sideways to the dock, the floating body is still a certain distance away from the dock. First, complete the cable of the tugboat itself; Step 3: At this time, the workers take the cage through the truck crane and go to the two pillars of the floating body to install the cable. After the two forklifts are connected, the two tugboat winches tighten the main towline and increase their own horsepower to pull parallel to the left and right. The forklifts on the left and right sides are also started synchronously to drag inward in a direction perpendicular to the sideline of the dock; Step 4: Finally, the semi-submersible three-cylinder buoy is precisely positioned close to the berthing ball through the coordinated operation of the forklift and the tugboat. After the berthing ball is stressed, the buoy mooring cable is prepared. First, the cross cables are tightened, and the two polymer cables originally connected by the forklift are released. They are tied to the pier piles in the form of cross cables, and the main towline connection of the tugboat is released to complete the final berthing of the buoy. The positioning device comprises a base (1), an adjusting plate (2) is rotatably mounted on the base (1), a placing plate (4) is rotatably mounted on the adjusting plate (2), a positioning plate (3) is fixedly mounted on a side of the adjusting plate (2) close to the placing plate (4), an adjusting component (8) is arranged on the adjusting plate (2), the adjusting component (8) comprises an electric telescopic rod (82), a movable groove (81) is provided on a side of the adjusting plate (2) close to the positioning plate (3), and the placing plate (4) is rotatably mounted in the movable groove (81). The electric telescopic rod (82) is fixedly mounted on the inner wall of the movable groove (81); a push plate (83) is fixedly mounted on one end of the electric telescopic rod (82) close to the placement plate (4); a second spring (84) is fixedly mounted on the side of the placement plate (4) away from the push plate (83); an extension plate (87) is fixedly mounted on the positioning plate (3); a telescopic plate (86) is arranged on the extension plate (87); an elastic component (7) is arranged on the adjustment plate (2); and a lifting component (6) is arranged on the base (1).

2. A method for berthing a semi-submersible three-cylinder floating body without top-pushing according to claim 1, Features: One end of the second spring (84) away from the placement plate (4) is mounted on the inner wall of the movable groove (81); the push plate (83) is slidably fitted with the inner bottom wall of the movable groove (81); the push plate (83) is tightly fitted with the placement plate (4); and a calibration plate (5) is fixedly mounted on one side of the positioning plate (3) close to the electric telescopic rod (82).

3. A semi-submersible three-cylinder floating body non-pushing berthing method according to claim 1, Features: A floating plate (85) is fixedly mounted on one end of the telescopic plate (86) away from the extension plate (87); a telescopic groove (810) is provided in the extension plate (87); the telescopic plate (86) is slidably mounted in the telescopic groove (810); waist-shaped through holes (88) are provided on inner walls on both sides of the telescopic groove (810); sliding columns (89) are slidably mounted in the waist-shaped through holes (88); and one end of the sliding column (89) close to the telescopic groove (810) is fixedly mounted on the telescopic plate (86).

4. A method for berthing a semi-submersible three-cylinder floating body without top-pushing according to claim 2, Features: The elastic component (7) comprises a first spring (73); a mounting groove (71) is provided at one end of the base (1) close to the positioning plate (3); a movable hook (76) is slidably mounted in the mounting groove (71); a protective ring (75) is fixedly mounted on one side of the adjustment plate (2) close to the mounting groove (71); the first spring (73) is fixedly mounted on one side of the movable hook (76) close to the protective ring (75); and a pull rope (74) is fixedly mounted on one side of the movable hook (76) close to the first spring (73).

5. A method for berthing a semi-submersible three-cylinder floating body without top-pushing according to claim 4, Features: One end of the first spring (73) away from the movable hook (76) is fixedly mounted on the inner wall of the mounting groove (71); a guide rod (72) is slidably mounted on the movable hook (76); both ends of the guide rod (72) are fixedly mounted on the inner wall of the mounting groove (71); the first spring (73) is nested on the outer surface of the guide rod (72); and the pull rope (74) slidably penetrates the protective ring (75).

6. A method for berthing a semi-submersible three-cylinder floating body without top-pushing according to claim 1, Features: The lifting assembly (6) comprises a lifting plate (67); a movable groove (61) is provided on a side of the base (1) close to the adjustment plate (2); a bidirectional screw (64) is rotatably mounted in the movable groove (61); two ends of the bidirectional screw (64) are threadedly penetrated with sliders (65); a connecting plate (66) is installed on a side of the two sliders (65) close to the adjustment plate (2); the lifting plate (67) is rotatably mounted between the two connecting plates (66); and a motor (62) is fixedly mounted on the base (1).

7. A method for berthing a semi-submersible three-cylinder floating body without top-pushing according to claim 6, Features: A contact plate (68) is rotatably mounted on one side of the lifting plate (67) close to the adjustment plate (2); the top surface of the contact plate (68) is slidably fitted with the bottom surface of the adjustment plate (2); and the output end of the motor (62) slides through the movable groove (61) and is fixedly mounted on the bidirectional screw (64).

8. A method for berthing a semi-submersible three-cylinder floating body without top-pushing according to claim 6, Features: A balancing rod (63) is slidably mounted on the slider (65), and both ends of the balancing rod (63) are fixedly mounted on the inner wall of the moving groove (61).

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