Rotary sail single-point hoisting structure and hoisting method thereof

Abstract

The invention relates to the technical field of single-point hoisting, and discloses a rotating sail single-point hoisting structure and a hoisting method.The rotating sail single-point hoisting structure comprises a rotating sail body, a wharf supporting jig frame, a ship track, a second lifting lug and a chain hoist, the first lifting lug is arranged on the outer surface of the rotating sail body, a first shackle is arranged at the first lifting lug, and a second shackle is arranged at the second lifting lug; a lifting rope is arranged at the other end of the first shackle, wharf rails and wharf AUD bases are arranged on the two sides of the wharf supporting jig frame correspondingly, first guide plates are welded to the ends, away from the wharf supporting jig frame, of the wharf AUD bases, and second guide plates are welded to the opposite outer surfaces of the left and right ADU bases correspondingly; a ship AUD base is arranged on one side of the ship track. When the rotary sail is hoisted, the rotation phenomenon of the rotary sail body is reduced, the situation that after the rotary sail body is hoisted, the whole equipment inclines, and the safety of the equipment and personnel is affected can be prevented, and hoisting of the rotary sail can be accurately and rapidly completed.

Description

Technical Field

[0001] The invention relates to the technical field of single-point hoisting, and in particular to a rotating sail single-point hoisting structure and a hoisting method thereof. Background Art

[0002] Rotating sails, also known as rotor sails or rotary sails, work on the principle of the Magnus effect. When wind blows through a rotating sail, it generates high pressure on one side of the sail and low pressure on the other side, thereby generating a thrust perpendicular to the direction of the airflow to propel the ship forward. This technology can effectively reduce the engine load, improve ship energy efficiency, and reduce fuel consumption and carbon emissions. Rotating sails are usually installed on some ships. Rotating sails are high-value equipment that requires single-point hoisting. The existing technology is difficult to hoist, as follows:

[0003] 1. According to the manufacturer's design, the rotating sail has only one lifting lug and is a single-point lifting device. Since the equipment is assembled on a prefabricated tire frame at the dock, the two sides of the lower end of the equipment are fixed on the track of the tire frame. When lifting, the equipment is prone to rotation, causing the lower end of the equipment to interfere with the track, which in turn makes lifting difficult.

[0004] 2. As the lifting point is inside the equipment, the lifting sling must pass through the top hatch of the rotating sail and connect to the lifting lug of the equipment. However, the hole is designed with a diameter of only about 1000mm and the center of gravity of the equipment is not at the center. In the natural state after lifting, the equipment as a whole will be tilted. Theoretically, the distance between the sling and the edge of the top circular hole is only about 175mm. Eccentricity during lifting can easily cause the equipment to shake, affecting the safety of the equipment and personnel.

[0005] 3. After the rotating sail is hoisted, it is lifted to the ship by a large floating crane. However, due to uncontrollable factors such as tide, weather, and waves caused by other ships sailing on the Yangtze River, the sling may come into contact with the edge of the top hatch cover. The outer cylinder of the equipment is a fiberglass reinforced plastic structure, which can easily damage the top of the rotating sail, requiring the fiberglass reinforced plastic to be repaired.

[0006] 4. The equipment needs to be hoisted onto the installed base and track on the ship. However, the gap between the lower roller of the equipment and the track is only 20mm. The AUD base bolt holes at the four corners of the equipment must correspond to the base bolt holes on the ship one by one. A total of 200 bolt holes need to be aligned, which places very high demands on the precision of equipment hoisting and installation.

[0007] In summary, the present invention provides a single-point hoisting structure for a rotating sail and a hoisting method thereof, which can accurately and quickly complete the hoisting of the rotating sail. Summary of the invention

[0008] In view of the deficiencies in the prior art, the present invention provides a rotating sail single-point hoisting structure and a hoisting method thereof to solve the problems mentioned in the above background technology.

[0009] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a rotating sail single-point lifting structure, comprising a rotating sail body, a dock supporting cradle, a ship track, a second lifting ear and a hand winch, the outer surface of the rotating sail body is provided with a first lifting ear, the first lifting ear is provided with a first shackle, the other end of the first shackle is provided with a lifting rope, the lifting rope is annular as a whole, both ends of the lifting rope are movably sleeved with a connecting seat, two connecting plates are arranged inside the connecting seat, the opposite outer surfaces of the two connecting plates are fixedly connected to two side plates, the outer surfaces of the two side plates are rotatably connected, the outer surface of the rotating shaft is fixedly sleeved with an abutment wheel, the opposite outer surfaces of the connecting seats at both ends of the lifting rope are fixedly connected to ear plates, the outer surfaces of the ear plates are provided with fixing holes, the inner surfaces of the fixing holes are threadedly connected with fixing bolts, and the outer surfaces of the fixing bolts are threadedly connected with fixing nuts.

[0010] As a further explanation of the present invention, dock rails and dock AUD bases are provided on both sides of the dock support tire frame, a first guide plate is welded to the end of the dock AUD base away from the dock support tire frame, and second guide plates are welded to the opposite outer surfaces of the ADU bases on the left and right sides.

[0011] As a further explanation of the present invention, a ship AUD base is provided on one side of the ship track, and third guide plates are welded to the opposite outer surfaces of the left and right ship AUD bases and the outer surface of the ship AUD base away from the ship track.

[0012] As a further explanation of the present invention, a top protection ring is arranged at the top hatch opening of the rotating sail body, and a plurality of positioning screw holes arranged in a circular array are opened around the top protection ring.

[0013] As a further illustration of the present invention, the lifting rope includes a steel rope and a flexible lifting belt, and the flexible lifting belt is sleeved on the outside of the steel rope.

[0014] As a further illustration of the present invention, positioning pins are provided at the four corners of the ship AUD base.

[0015] As a further explanation of the present invention, two springs and two telescopic rods are fixedly connected to the inner surfaces of the left and right sides of the connecting seat, and the other ends of the two springs and the two telescopic rods are fixedly connected to the connecting plate, and the springs are sleeved on the outer surfaces of the telescopic rods.

[0016] A single-point hoisting method for a rotating sail is also provided, comprising the following steps: S1: Install the dock rail and the dock AUD base at the dock test site, install the ship rail and the ship AUD base on the ship, and prefabricate positioning pins that match the four corners of the dock AUD base and the ship AUD base.

[0017] S2: Welding the first guide plate, the second guide plate and the third guide plate on the surfaces of the dock AUD base and the ship AUD base respectively.

[0018] S3: Weld the second lifting lugs around the dock test site and around the ship, and connect the second lifting lugs to the rotating sail body with a hand winch.

[0019] S4: Install the top protection ring at the top hatch opening of the rotating sail body.

[0020] S6: Connect the first shackle with the first lifting ear, screw the fixing bolt into the corresponding fixing hole, and screw the fixing nut on the fixing bolt to connect the corresponding two connecting seats, connect the two ends of the lifting rope with the first shackle and the second shackle respectively, adjust the position of the connecting seat to reduce the gap between the first shackle and the second shackle and the lifting rope, and then connect the second shackle to the hook of the large floating crane.

[0021] S7: The large floating crane hook is lifted. During the lowering process, the hook slowly lowers until the roller frame device is about 400mm away from the track, and then slowly lowers until the roller frame device is about 500mm away from the track. The hook stops and the positioning pin is inserted into the AUD base. Then the hook continues to lower and the position of the rotating sail back pain is adjusted by the hand winch and the traction rope to make it fall accurately.

[0022] Compared with the prior art, the present invention has the following beneficial effects: 1. A single-point hoisting structure for a rotating sail provided by the present invention connects two ends of a hoisting rope into equal lengths by two connecting seats, and an abutment wheel is provided to enable the connecting seat to move on the surface of the hoisting rope, thereby reducing the gap between the shackle and the hoisting rope and reducing the rotation of the rotating sail body.

[0023] 2. The present invention provides a single-point lifting structure for a rotating sail. A second lifting eye is preset, and the second lifting eye is connected to the rotating sail body by a hand winch. The hand winch controls the inclination and rotation of the rotating sail body, thereby preventing the rotating sail body from tilting as a whole after being lifted, which would affect the safety of the equipment and personnel.

[0024] 3. In a single-point hoisting structure of a rotating sail provided by the present invention, a hoisting rope is formed by arranging a flexible sling and a steel wire rope, and a top protection ring is installed. The top protection ring prevents the hoisting rope from directly contacting the FRP outer cylinder and causing damage to the FRP.

[0025] 4. In a single-point hoisting structure for a rotating sail provided by the present invention, a plurality of guide plates are pre-arranged, positioning pins are inserted into the four corners of the AUD base of the ship, and the position of the rotating sail body is adjusted by a hand winch and a traction rope to enable it to be accurately positioned. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the rotating sail body hoisting position of a rotating sail single-point hoisting structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of a rotating sail single-point hoisting structure connection seat of the present invention; Figure 3 This is a schematic diagram of the structure of the hoisting rope of a single-point hoisting structure of a rotating sail of the present invention; Figure 4 It is a schematic diagram of the side view of the structure of a pier support frame of a rotating sail single-point hoisting structure of the present invention; Figure 5 It is a schematic diagram of a top view of the structure of a pier support frame of a rotating sail single-point hoisting structure of the present invention; Figure 6 This is a schematic diagram of a top view of a ship track of a rotating sail single-point hoisting structure of the present invention; Figure 7 This is a schematic diagram of the AUD base structure of a rotating sail single-point hoisting structure ship of the present invention; Figure 8 A schematic diagram of a hand chain hoist of a rotating sail single-point hoisting structure and its related structures of the present invention; Fig. 9 The present invention is a schematic diagram of the top protection ring structure of a rotating sail single-point hoisting structure.

[0027] In the figure: 1. rotating sail body; 2. first lifting ear; 3. first shackle; 4. lifting rope; 5. second shackle; 6. connecting seat; 7. connecting plate; 8. side plate; 9. abutment wheel; 10. ear plate; 11. fixing hole; 12. fixing bolt; 13. dock support cradle; 14. dock AUD base; 15. first guide plate; 16. second guide plate; 17. ship track; 18. ship AUD base; 19. third guide plate; 20. second lifting ear; 21. hand chain hoist; 22. top protection ring; 23. positioning screw hole; 24. flexible sling; 25. steel rope; 26. spring; 27. telescopic rod; 28. positioning pin. DETAILED DESCRIPTION

[0028] 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.

[0029] Embodiment 1: Please refer to Figure 1-Figure 9 The present invention provides a technical solution: a single-point lifting structure of a rotating sail, comprising a rotating sail body 1, a dock supporting tire frame 13, a ship track 17, a second lifting ear 20 and a hand winch 21, a first lifting ear 2 is arranged on the outer surface of the rotating sail body 1, a first shackle 3 is arranged at the first lifting ear 2, a lifting rope 4 is arranged at the other end of the first shackle 3, the lifting rope 4 is annular as a whole, both ends of the lifting rope 4 are movably sleeved with a connecting seat 6, two connecting plates 7 are arranged inside the connecting seat 6, the opposite outer surfaces of the two connecting plates 7 are fixedly connected with two side plates 8, the outer surfaces of the two side plates 8 are rotatably connected, the outer surface of the rotating shaft is fixedly sleeved with an abutting wheel 9, the opposite outer surfaces of the connecting seats 6 at both ends of the lifting rope 4 are fixedly connected with ear plates 10, the outer surface of the ear plate 10 is provided with a fixing hole 11, the inner surface of the fixing hole 11 is threadedly connected with a fixing bolt 12, and the outer surface of the fixing bolt 12 is threadedly connected with a fixing nut.

[0030] In this embodiment, two springs 26 and two telescopic rods 27 are fixedly connected to the inner surfaces of the left and right sides of the connecting seat 6. The other ends of the two springs 26 and the two telescopic rods 27 are fixedly connected to the connecting plate 7. The springs 26 are sleeved on the outer surfaces of the telescopic rods 27. Specifically, the springs 26 are set so that the elastic force of the springs 26 makes the abutment wheel 9 close to the surface of the lifting rope 4, and as the springs 26 are deformed, the telescopic rods 27 are extended and retracted accordingly, and the telescopic rods 27 are used to prevent the springs 26 from being tilted.

[0031] In the specific implementation process, the ear plates 10 of the two connecting seats 6 are aligned, and the fixing bolts 12 are screwed into the fixing holes 11, and then the fixing nuts are screwed on to connect the ear plates 10 of the two connecting seats 6, so as to fix the two connecting seats 6. At this time, the connection of the two connecting seats 6 divides the two ends of the two lifting ropes 4 into the same length, and then one end of the lifting rope 4 is connected to the second shackle 5. After the connection is completed, the connecting seat 6 is lifted upward in the direction close to the first shackle 3 or the second shackle 5, so that the abutment wheel 9 moves on the surface of the lifting rope 4, so that the gap between the lifting rope 4 and the second shackle 5 is reduced, and then the second shackle 5 is connected to the lifting end of the large floating crane, and the rotating sail body 1 is lifted by the large floating crane, and then the connecting seat 6 at the other end is installed, and the same method as above is adopted, and then one end of the lifting rope 4 is connected to the first shackle 3. The length of the lifting rope 4 at both ends is consistent, which reduces the rotation of the rotating sail body 1.

[0032] Embodiment 2: Please refer to Figure 1-Figure 9 The present invention provides a technical solution: in this embodiment, dock rails and dock AUD bases 14 are provided on both sides of the dock supporting tire frame 13, a first guide plate 15 is welded to one end of the dock AUD base 14 away from the dock supporting tire frame 13, and second guide plates 16 are welded to the opposite outer surfaces of the ADU bases on the left and right sides.

[0033] In this embodiment, a ship AUD base 18 is provided on one side of the ship track 17, and a third guide plate 19 is welded to the opposite outer surfaces of the left and right ship AUD bases 18 and the outer surface of the side of the ship AUD base 18 away from the ship track 17. Specifically, the rotating sail body 1 is guided by setting a plurality of guide plates.

[0034] In this embodiment, positioning pins 28 are provided at the four corners of the ship AUD base 18. Specifically, the positioning pins 28 are inserted into the four corners of the AUD base to cooperate with the guide plates to position and guide the rotating sail body 1.

[0035] In the specific implementation process, during the lowering process, the hook of the large floating crane is slowly lowered until the roller frame device of the equipment is about 400 mm away from the ship track 17, and the base of the rotating sail body 1 is close to the preset third guide plate 19 on the ship, and then slowly lowered so that the roller frame device of the equipment stops at about 50 mm away from the ship track 17. After the positioning pins 28 are transmitted to the four sides of the ship AUD base 18, the hook continues to be lowered, and the position of the rotating sail body 1 is adjusted by the hand winch 21, and finally it is accurately positioned to complete the lifting work.

[0036] Embodiment 3: Please refer to Figure 1-Figure 9The present invention provides a technical solution: a top protection ring 22 is provided at the top hatch opening of the rotating sail body 1, and a plurality of positioning screw holes 23 arranged in a circular array are opened around the top protection ring 22.

[0037] In this embodiment, the lifting rope 4 includes a steel rope 25 and a flexible sling 24. The flexible sling 24 is sleeved on the outside of the steel rope 25. Specifically, by combining the flexible sling 24 with the steel rope 25, not only the lifting rope 4 has a certain rigidity, but also the steel rope 25 is prevented from damaging the fiberglass.

[0038] During the specific implementation process, the top protection ring 22 is fixed by positioning bolts. When the lifting rope 4 of the rotating sail body 1 is too close to the edge of the equipment due to uncontrollable factors, the top protection ring 22 prevents the lifting rope 4 from directly contacting the FRP outer tube and causing damage to the FRP.

[0039] This embodiment also relates to a hoisting method using the above-mentioned rotating sail single-point hoisting structure, comprising the following steps: S1: Install the dock rail and the dock AUD base 14 at the dock test site, install the ship rail 17 and the ship AUD base 18 on the ship, and prefabricate positioning pins 28 that match the four corners of the dock AUD base 14 and the ship AUD base 18.

[0040] S2: Welding the first guide plate 15, the second guide plate 16 and the third guide plate 19 on the surfaces of the dock AUD base 14 and the ship AUD base 18 respectively.

[0041] S3: Weld the second lifting lug 20 around the dock test site and around the ship, and connect the second lifting lug 20 to the rotating sail body 1 with a hand winch 21.

[0042] S4: Install the top protection ring 22 at the top hatch opening of the rotating sail body 1 .

[0043] S6: Connect the first shackle 3 with the first lifting ear 2, screw the fixing bolt 12 into the corresponding fixing hole 11, and screw the fixing nut on the fixing bolt 12 to connect the corresponding two connecting seats 6, connect the two ends of the lifting rope 4 with the first shackle 3 and the second shackle 5 respectively, adjust the position of the connecting seat 6 to reduce the gap between the first shackle 3 and the second shackle 5 and the lifting rope 4, and then connect the second shackle 5 to the hook of the large floating crane.

[0044] S7: The large floating crane hook is lifted. During the downward process, the hook slowly moves downward until the roller frame device is about 400mm away from the track, and then slowly moves downward until the roller frame device is about 500mm away from the track. The downward movement stops and the positioning pin 28 is inserted into the AUD base. Then the hook continues to move downward, and the position of the back pain of the rotating sail body 1 is adjusted by the hand winch 21 and the traction rope to make it fall accurately.

[0045] Working principle: When the hoisting structure is in use, the ear plates 10 of the two connecting seats 6 are aligned, and the fixing bolts 12 are screwed into the fixing holes 11, and then the fixing nuts are screwed on to connect the ear plates 10 of the two connecting seats 6, so as to fix the two connecting seats 6. At this time, the connection of the two connecting seats 6 divides the two ends of the two lifting ropes 4 into the same length, and then one end of the lifting rope 4 is connected to the second shackle 5. After the connection is completed, the connecting seat 6 is lifted upward in the direction close to the first shackle 3 or the second shackle 5, so that the abutment wheel 9 moves on the surface of the lifting rope 4, so that the gap between the lifting rope 4 and the second shackle 5 is reduced, and then the second shackle 5 is connected to the lifting end of the large floating crane, and the rotating sail body 1 is lifted by the large floating crane, and then the connecting seat 6 at the other end is installed, and the same method as above is adopted, and then one end of the lifting rope 4 is connected to the first shackle 3, and the length of the lifting rope 4 at both ends is consistent, thereby reducing the rotation of the rotating sail body 1.

[0046] During hoisting, one end of the hand winch 21 on the dock hoisting site is connected to the second lifting ear 20, and the lifting end is connected to the rotating sail body 1. The hand winch 21 is used to control the inclination and rotation of the rotating sail body 1, and the hand winch 21 on the ship is used to control the arc of the rotating sail body 1 during lifting and lowering, thereby preventing the rotating sail body 1 from tilting as a whole after lifting, affecting the safety of equipment and personnel.

[0047] The top protection ring 22 is fixed by positioning bolts. When the lifting rope 4 is too close to the edge of the rotating sail body 1 due to uncontrollable factors, the top protection ring 22 prevents the lifting rope 4 from directly contacting the FRP outer tube and causing damage to the FRP.

[0048] During the lowering process, the hook of the large floating crane is slowly lowered until the roller frame device of the equipment is about 400 mm away from the ship track 17, and the base of the rotating sail body 1 is close to the preset third guide plate 19 on the ship, and then slowly lowered so that the roller frame device of the equipment stops at a position about 50 mm away from the ship track 17. After the positioning pins 28 are passed around the ship's AUD base 18, the hook continues to be lowered, and the position of the rotating sail body 1 is adjusted by the hand winch 21, and finally it is accurately positioned to complete the lifting work.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-point hoisting structure for a rotating sail, comprising a rotating sail body (1), a dock support frame (13), a ship track (17), a second lifting lug (20) and a hand chain hoist (21), characterized in that: The outer surface of the rotating sail body (1) is provided with a first lifting eye (2), the first lifting eye (2) is provided with a first shackle (3), the other end of the first shackle (3) is provided with a lifting rope (4), the lifting rope (4) is annular as a whole, both ends of the lifting rope (4) are movably sleeved with a connecting seat (6), two connecting plates (7) are arranged inside the connecting seat (6), the opposite outer surfaces of the two connecting plates (7) are fixedly connected to two side plates (8), the outer surfaces of the two side plates (8) are rotatably connected with a rotating shaft, the outer surface of the rotating shaft is fixedly sleeved with an abutment wheel (9), the opposite outer surfaces of the connecting seats (6) at both ends of the lifting rope (4) are fixedly connected with ear plates (10), the outer surfaces of the ear plates (10) are provided with fixing holes (11), the inner surfaces of the fixing holes (11) are threadedly connected with fixing bolts (12), and the outer surfaces of the fixing bolts (12) are threadedly connected with fixing nuts.

2. The single-point hoisting structure of a rotating sail according to claim 1, characterized in that: Dock rails and dock AUD bases (14) are provided on both sides of the dock support cradle (13); a first guide plate (15) is welded to one end of the dock AUD base (14) away from the dock support cradle (13); and second guide plates (16) are welded to the opposite outer surfaces of the ADU bases on the left and right sides.

3. The single-point hoisting structure of a rotating sail according to claim 1, characterized in that: A ship AUD base (18) is provided on one side of the ship track (17), and third guide plates (19) are welded to the opposing outer surfaces of the left and right ship AUD bases (18) and the outer surface of the side of the ship AUD base (18) away from the ship track (17).

4. The single-point hoisting structure of a rotating sail according to claim 1, characterized in that: A top protection ring (22) is provided at the top hatch opening of the rotating sail body (1), and a plurality of positioning screw holes (23) arranged in a circular array are provided around the top protection ring (22).

5. The single-point hoisting structure of a rotating sail according to claim 1, characterized in that: The lifting rope (4) comprises a steel rope (25) and a flexible lifting belt (24), wherein the flexible lifting belt (24) is sleeved on the outside of the steel rope (25).

6. The single-point hoisting structure of a rotating sail according to claim 3, characterized in that: Positioning pins (28) are provided at the four corners of the ship AUD base (18).

7. The single-point hoisting structure of a rotating sail according to claim 1, characterized in that: Two springs (26) and two telescopic rods (27) are fixedly connected to the inner surfaces of the left and right sides of the connecting seat (6); the other ends of the two springs (26) and the two telescopic rods (27) are fixedly connected to the connecting plate (7); and the springs (26) are sleeved on the outer surfaces of the telescopic rods (27).

8. A single-point hoisting method for a rotating sail, characterized in that: The following steps are involved: S1: Install the dock rail and the dock AUD base (14) at the dock test site, install the ship rail (17) and the ship AUD base (18) on the ship, and prefabricate positioning pins (28) that match the four corners of the dock AUD base (14) and the ship AUD base (18); S2: welding a first guide plate (15), a second guide plate (16), and a third guide plate (19) on the surfaces of the dock AUD base (14) and the ship AUD base (18), respectively; S3: welding the second lifting lug (20) around the dock test site and around the ship, and connecting the second lifting lug (20) to the rotating sail body (1) using a hand chain hoist (21); S4: Installing the top protection ring (22) at the top hatch opening of the rotating sail body (1); S6: Connect the first shackle (3) with the first lifting ear (2), screw the fixing bolt (12) into the corresponding fixing hole (11), and screw the fixing nut into the fixing bolt (12) to connect the corresponding two connecting seats (6), respectively connect the two ends of the lifting rope (4) with the first shackle (3) and the second shackle (5), adjust the position of the connecting seat (6) to reduce the gap between the first shackle (3) and the second shackle (5) and the lifting rope (4), and then connect the second shackle (5) to the hook of the large floating crane; S7: The large floating crane hook is lifted. During the lowering process, the hook slowly lowers until the roller frame device is about 400 mm away from the track, and then slowly lowers until the roller frame device is about 500 mm away from the track. The hook stops lowering and the positioning pin (28) is inserted into the AUD base. The hook then continues to lower and the position of the rotating sail back pain is adjusted by the hand winch (21) and the towing rope to make it fall accurately.

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