A single pile transportation and flipping system

Abstract

The utility model provides a single pile transportation and flipping system, including a barge body, a supporting saddle, a sliding system, a flipping system and a lifting device. In the utility model, the supporting saddles are evenly arranged in pairs on both sides of the barge body for horizontal storage of single piles. By adjusting the angle of the clamping device on the supporting saddle according to the diameter of the single pile, the single piles of different diameters can be stably clamped, thereby improving the stability during transportation. The sliding system is arranged between the supporting saddles. When in use, the sliding trolley moves on the track to realize the transportation and loading of the single pile. The flipping system and the lifting device are respectively arranged on both sides of the ship body. With the assistance of the lifting device, the single pile is flipped from a horizontal state to a vertical state. In the utility model, the transportation and loading of the single pile are independently completed by the sliding system without the intervention of the lifting device, thereby reducing the risk of offshore operations and improving the stability of operations.

Description

Technical Field

[0001] The utility model belongs to the technical field of offshore wind power monopile equipment, and in particular relates to a monopile transportation and overturning system. Background Art

[0002] In recent years, with the vigorous development of the offshore wind power industry, offshore wind turbines have been continuously upgraded and developed in the direction of large-scale and deep-water. The monopile as the foundation of the wind turbine is getting heavier and heavier, and the size is getting bigger and bigger. In the traditional construction scheme, the monopile needs to be independently completed by the crane during the loading and unloading at the dock, the loading and unloading at sea, and the turning of the pile, so it is heavily dependent on the lifting capacity of the crane. On the one hand, the greater the lifting capacity requirement of the crane, the larger the size of its fuselage will be, and the larger the deck area will be, which will reduce the storage and transportation capacity of the barge for monopiles; on the other hand, wind farms are generally built in places with rich wind resources. Considering the harsh environment of offshore lifting operations, the construction is completely carried out by cranes, which has low efficiency and poor safety and stability. In addition, the transportation saddle of the monopile is generally customized according to the size of the monopile. Once the design size of the monopile changes, the transportation saddle will no longer be applicable, resulting in a serious waste of resources.

[0003] Therefore, we proposed a single pile transportation and flipping system to solve the above problems. Utility Model Content

[0004] The utility model provides a single pile transportation and turnover system, which is used to solve the problems of poor versatility of the transportation saddle in the traditional construction scheme, heavy reliance on lifting equipment, and high operation risks.

[0005] It includes a barge body, a bottom support saddle, a top support saddle, a sliding system, a turning system, a lifting equipment and a monopile body; the bottom support saddle and the top support saddle are respectively installed on both sides above the barge body for storing and transporting the monopile body together; the sliding system is installed between the bottom support saddle and the top support saddle for carrying the monopile body; the turning system is installed on one side of the bottom support saddle, and a separate top support saddle is installed on the opposite side to cooperate with the turning system to support the monopile body together; the crane is located on one side of the top support saddle, and is used for loading the monopile body and assisting the turning system to turn the monopile body.

[0006] As a further technical solution of the utility model, the bottom support saddle is fixed to the first base above the barge body by bolt connection; a clamping device is arranged above the bottom support saddle, the distance of the clamping device can be adjusted by a sliding system, and the angle of the clamping device can be adjusted by an angle adjustment system, so that the clamping device can match different single pile body sizes.

[0007] As a further technical solution of the utility model, the top support saddle is fixed to the first base above the barge body by bolt connection; a crossbeam is installed on the top support saddle, and the clamping device is installed on the top of the crossbeam; a plurality of groups of working holes are evenly arranged on the crossbeam along the vertical direction, and height adjustment is achieved under the action of the height adjustment system; the angle of the clamping device can be adjusted by the angle adjustment system to match different single pile body sizes.

[0008] As a further technical solution of the utility model, the sliding system is arranged between the top support saddle and the bottom support saddle, and a special track is provided above the ship body for the sliding system to slide; the sliding system includes a pulley body, a telescopic box, a platform bracket, a pre-set beam and a clamping device from bottom to top; the pulley body and the telescopic box and the platform bracket are nested, and can slide vertically along the track under the action of the main jacking system to achieve primary and secondary jacking; a plurality of groups of working holes are evenly arranged on the pre-set beam in the vertical direction, and can slide vertically along the track on the platform bracket under the action of the secondary jacking system to achieve third-level jacking; the clamping device is installed above the pre-set beam, and the angle of the clamping device can be adjusted by the angle adjustment system to match different single pile body sizes.

[0009] As a further technical solution of the utility model, the flipping system includes a third base, a base, a telescopic arm, a folding frame, a pre-set frame, a main lifting hydraulic cylinder, a bracket, a grab and a slide box. The third base is installed above the barge body, divided into two left and right parts, and on the same side as the bottom support saddle; the base is installed above the third base and connected to the third base through high-strength bolts; the telescopic arm and the folding frame are respectively installed at the top hinge point and the bottom hinge point of the third base through a pin connection, the outer end of the telescopic arm is connected to the folding frame, and the folding frame is pushed by the telescopic arm to realize the pitching movement of the flipping system; the bracket is installed between the two folding frames and is connected to the folding frame through a pin connection; the pre-set frame is installed on the outside of the folding frame and shares a pin with the folding frame and the bracket; the top hinge point of the pre-set frame is connected to the bracket, and the pre-set frame can be completely fixed on the bracket, the end of the pre-set frame is connected to the main lifting hydraulic cylinder, and the other end of the main lifting hydraulic cylinder is connected to the bottom hinge point of the folding frame; through the reciprocating motion of the main lifting hydraulic cylinder, the pre-set frame is pushed to drive the bracket to realize the flipping movement of the flipping system. The grab is in a "U" shape and nested inside the bracket. Multiple groups of working holes are evenly arranged on the grab to meet the needs of adjusting different working positions. The slide box is nested outside the two cantilevers of the grab. The slide box and the grab are connected by a pin shaft. A hydraulic cylinder is installed between the slide box and the grab. The position of the grab is adjusted by the reciprocating motion of the hydraulic cylinder. A "V"-shaped beam structure is set at the bottom of the grab to support the single pile body. A clamping device is set on the "V"-shaped beam structure to clamp the single pile body to prevent slipping and falling off during the pile turning process.

[0010] As a further technical solution of the utility model, the bottom support saddle includes a first base, a first saddle body, a first clamping device, a second sliding system and a first angle adjustment system; the first base is installed above the barge body; the first saddle body is installed above the first base and is connected to the first base by high-strength bolts; the first clamping device is installed above the first saddle body, and two are in a group; the second sliding system is installed above the first saddle body, and is used to adjust the spacing of the first clamping device to match the size of the single pile body; the first angle adjustment system is installed on both sides of the first clamping device, and is used to adjust the angle of the first clamping device to match the size of the single pile body.

[0011] As a further technical solution of the utility model, the top support saddle includes a second base, a second saddle body, a crossbeam, a second clamping device, a second angle adjustment system and a height adjustment system; the second base is installed above the barge body; the second saddle body is installed above the second base and is connected to the second base by high-strength bolts; the crossbeam is installed in the middle of the second saddle body and is connected to the second saddle body by a pin; the crossbeam is provided with multiple groups of working holes of different heights to meet the setting requirements of different heights; the height adjustment system is connected to the crossbeam, and the other end is connected to the second saddle body, and is used to adjust the height of the crossbeam to match the storage height of the single pile body; the second clamping device is installed above the crossbeam, and two are in a group; the second angle adjustment system is installed on both sides of the second clamping device, and is used to adjust the angle of the second clamping device to match the size of the single pile body.

[0012] As a further technical solution of the utility model, the first sliding system is arranged between the bottom support saddle and the top support saddle; there are two first sliding systems, which can bear the entire weight of the single pile body when working simultaneously.

[0013] As a further technical solution of the utility model, the telescopic arm includes a backing hinge box, a backing sliding box, a backing telescopic rod and a telescopic hydraulic cylinder; the backing sliding box is nested inside the backing hinge box, and the backing sliding box is provided with a special track for sliding inside the backing hinge box; the backing telescopic rod is nested inside the backing sliding box, and the backing telescopic rod is provided with a special track for sliding inside the backing sliding box.

[0014] As a further technical solution of the utility model, the back hinge box, the back sliding box and the back telescopic rod are connected by a pin; the back sliding box and the back telescopic rod are connected by another pin; a plurality of groups of working holes are arranged on the back telescopic rod to meet different extension length requirements; the telescopic hydraulic cylinder is installed between the back hinge box and the back sliding box, and the reciprocating motion of the telescopic hydraulic cylinder is used to switch the working holes of the back telescopic rod, thereby realizing the change of the telescopic length of the telescopic arm, and then pushing the folding frame to realize the pitching action of the flipping system.

[0015] As a further technical solution of the utility model, the pre-set frame is installed on the outside of the folding frame, and the main hinge point shares the same pin shaft with the folding frame and the bracket; the top hinge point of the pre-set frame is connected to the bracket, which is used to completely fix the pre-set frame on the bracket; the end of the pre-set frame is connected to the main lifting hydraulic cylinder, and the other end of the main lifting hydraulic cylinder is connected to the hinge point at the bottom of the folding frame; the main lifting hydraulic cylinder reciprocates to push the pre-set frame to rotate around the hinge point at the end of the folding frame, thereby pushing the bracket to realize the flipping action of the flipping system.

[0016] As a further technical solution of the utility model, the grab is U-shaped and nested in the bracket; there are two slide boxes, which are respectively nested outside the cantilevers on both sides of the grab; the grab is provided with a plurality of groups of working holes arranged evenly, which are respectively connected to the bracket and the slide box through pin connections; the bracket and the slide box are connected by a slide box hydraulic cylinder, and the position adjustment of the grab is achieved through the reciprocating motion of the slide box hydraulic cylinder.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The top support saddle and the bottom support saddle of the utility model are both provided with clamping devices, and the angle and spacing of the clamping devices can be adjusted according to the size of the single pile body, which can not only improve the stability of the single pile body during storage and transportation, but also solve the versatility problem of the support saddle, avoiding the waste of resources caused by the inability of traditional support saddles to support single pile bodies of different sizes.

[0019] 2. Usually, the top diameter of the monopile body is smaller than the bottom diameter, which causes the top and bottom of the monopile to be at different heights from the deck during storage. The height of the top support saddle of the utility model can be adjusted according to the size of the monopile body to compensate for the height difference, so that the monopile body is always in a horizontal state, thereby improving the stability of the monopile body during storage and transportation.

[0020] 3. The sliding system of the utility model is height-adjustable. When the height is reduced to the lowest, the sliding system can pass freely under the stored monopile body. When loading at the dock, the crane only needs to place the monopile body on the support saddle closest to itself. The sliding system can slide to the bottom of the monopile, lift the monopile to a certain height, and then move it to other support saddles, which greatly reduces the requirements for the crane's lifting capacity. The crane and the sliding system work together to improve work efficiency and reduce costs.

[0021] 4. The sliding system of the utility model is height-adjustable. When the height is raised to the highest, the sliding system can lift the monopile body over the flipping system. During offshore construction, the sliding system can lift the monopile body on the supporting saddle to the highest position, transport and load it into the flipping system. Compared with the traditional construction method, this process completely replaces the lifting operation with the pulley transportation, which reduces the requirements for the crane's lifting capacity and also reduces the risk of offshore lifting operations.

[0022] 5. The flipping system serves as the rotating fulcrum of the pile turning process, which can provide stable support, making the entire pile turning process smoother and more continuous.

[0023] 6. During the turning process of the single pile body, the clamping devices located on the turning system bracket and the grab bucket can always maintain a stable clamp on the single pile body to prevent the single pile body from slipping or falling off, thereby improving the safety of the pile turning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a general layout diagram of the barge main body deck of the utility model.

[0025] Figure 2 It is a schematic diagram of the bottom support saddle structure of the utility model.

[0026] Figure 3 It is a schematic diagram of the top support saddle structure of the utility model.

[0027] Figure 4 This is a schematic diagram of the structure of the sliding system of the utility model - the front view.

[0028] Figure 5 It is a schematic diagram of the structure of the sliding system of the utility model - a side view.

[0029] Figure 6 It is a structural schematic diagram of the turning system of the utility model.

[0030] Figure 7 It is a structural schematic diagram of a bracket in the turning system of the utility model.

[0031] Figure 8 It is a structural schematic diagram of a "V"-shaped beam of a grab bucket in a turnover system of the utility model.

[0032] In the figure: 1-barge body, 2-bottom support saddle, 3-top support saddle, 4-first sliding system, 5-turning system, 6-lifting equipment, 7-monopile body, 21-first base, 22-first saddle body, 23-first clamping device, 24-second sliding system, 25-first angle adjustment system, 31-second base, 32-second saddle body, 33-crossbeam, 34-second clamping device, 35-second angle adjustment system, 36-height adjustment system, 41-sliding track, 42-pulley body, 43-pulley traction system, 44-telescopic box, 45-platform bracket, 46-pre-set beam, 47-main jacking system, 48-

[0033] Secondary lifting system, 49-third clamping device, 410-third angle adjustment system, 51-third base, 52-base, 53-telescopic arm, 54-folding frame, 55-pre-set frame, 56-main lifting hydraulic cylinder, 57-

[0034] Bracket, 571-bottom clamping device, 572-top clamping device, 58-grab bucket, 581-"V" beam structure, 582-fourth clamping device, 59-slide box, 591-slide box hydraulic cylinder. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with the accompanying drawings:

[0036] Example:

[0037] As attached Figure 1 To Attachment Figure 8 Shown

[0038] The utility model provides a monopile transportation and turnover system, comprising a barge body (1), a bottom support saddle (2), a top support saddle (3), a first sliding system (4), a turnover system (5), a lifting device (6) and a monopile body (7); the bottom support saddle (2) and the top support saddle (3) are evenly arranged in pairs on both sides of the barge body (1). The first sliding system (4) is arranged between the bottom support saddle (2) and the top support saddle (3), and can slide along a sliding track (41) under the action of a pulley traction system (43). The turnover system (5) is arranged on one side of the bottom support saddle (2), and the lifting device (6) is arranged on one side of the top support saddle (3).

[0039] When loading at the wharf, the angles of the first clamping device (23) on the bottom support saddle (2) and the second clamping device (34) on the top support saddle (3) are pre-set according to the diameter of the monopile body (7) to match the diameter of the monopile body (7) and ensure the stability of the support; the support height of the top support saddle (3) is pre-set by the height adjustment system (36) on the top support saddle (3) to compensate for the diameter difference between the top and bottom of the monopile body (7) and ensure that the monopile body (7) is in a horizontal support state to prevent sliding; the lifting equipment (6) lifts the monopile body (7) ) is moved from the storage position at the dock and stored in the support saddle closest to itself. The height of the first sliding system (4) is pre-set to the minimum height. Under the action of the pulley traction system (43), it slides along the sliding track (41) to the bottom of the single pile body (7); the angle of the third clamping device (49) is adjusted by the third angle adjustment system (410) to match the diameter of the single pile; under the joint action of the main jacking system (47) and the secondary jacking system (48), the sliding system rises in height, and the single pile is lifted to a certain height and then moved to a support saddle farther from the lifting equipment (7). In the utility model, the loading of the single pile body (7) is completed by the lifting equipment (6) and the first sliding system (4), which not only improves the work efficiency, but also greatly reduces the requirements for the lifting capacity of the lifting equipment (7).

[0040] During offshore construction, the angle of the flipping system (5) is adjusted to a horizontal working state; the position of the grab bucket (58) in the bracket (57) is pre-set according to the length of the monopile body (7) to match the outboard length of the monopile body (7); the angle of the bottom clamping device (571) in the bracket (57) is pre-set according to the diameter of the monopile body (7) to match the diameter of the monopile body (7); the height of the first sliding system (4) is pre-set to a minimum height, and slides to the bottom of the monopile body (7) along the sliding track (41) under the action of the pulley traction system (43); the third clamping device (49) is adjusted by the third angle adjustment system (410) The first sliding system (44) is configured to adjust the height of the pile body (7) to match the diameter of the pile; under the joint action of the main lifting system (47) and the secondary lifting system (48), the first sliding system (4) rises in height and lifts the pile body (7) over the turning system (5) to its center position; the first sliding system (4) is lowered in height until the pile body (7) is completely loaded into the turning system (5); the top clamping device (572) on the bracket (57) and the fourth clamping device (582) on the "V"-shaped beam structure (581) of the grab bucket (58) maintain the clamping of the pile body (7) under the push of the hydraulic device to prevent the pile body (7) from slipping and falling off during the pile turning process.

[0041] The turning over of the single pile body (7) is accomplished by the turning over system (5) and the lifting equipment (6); the lifting equipment (6) is connected to the top of the single pile body (7) through a special sling, and the turning over system (5) is responsible for supporting and fixing the bottom of the single pile body (7); when turning over, the lifting equipment (6) applies a turning over moment to the single pile body (7), and the single pile body (7) rotates with the common pin shaft of the folding frame (54), the pre-set frame (55) and the bracket (57) as the hinge point; the main lifting hydraulic cylinder (56) pushes the pre-set frame (55) to rotate around the hinge point at the end of the folding frame (54), thereby pushing the bracket (57) and the grab bucket (58) to follow the single pile body (7) to realize the turning over action.

[0042] How it works

[0043] The working principle of the utility model is as follows: the bottom support saddle (2) and the top support saddle (3) appear in pairs in the form of two as a group and are evenly arranged on both sides of the barge body (1); the bottom support saddle (2) and the top support saddle (3) jointly support the monopile body (7); the bottom support saddle (2) is provided with a first clamping device (23), a second sliding system (24) and a first angle adjustment system (25), which can match different monopile diameters; the top support saddle (3) is provided with a second clamping device (34), a second angle adjustment system (35) and a height adjustment system (36), which can match different monopile diameters and effectively compensate for the diameter difference between the top and bottom of the monopile body (7); the first sliding system (4) is arranged on the bottom support saddle (2) and the top support saddle (3), can slide along the sliding track (41) under the action of the pulley traction system (43), so as to realize the free transportation of the single pile body (7); the first sliding system (4) is height-adjustable, and when the height is reduced to the lowest, the first sliding system (4) can freely pass under the stored single pile body (7); when the height is increased to the highest, the first sliding system (4) can lift the single pile body (7) over the turning system (5), so as to independently complete the loading work before turning the pile; the turning system (5) is arranged on one side of the bottom support saddle (2), and the lifting equipment (6) is arranged on one side of the top support saddle (3). When turning the pile, the lifting equipment (6) provides the single pile body (7) with a turning torque, and the turning system (5) acts as a turning hinge and provides stable support and clamping for the single pile body (7).

[0044] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A single pile transportation and turnover system, characterized by: The invention comprises a barge body (1), a bottom support saddle (2), a top support saddle (3), a first sliding system (4), a turnover system (5), a lifting device (6) and a monopile body (7); the bottom support saddle (2) and the top support saddle (3) are respectively installed on both sides above the barge body (1); the first sliding system (4) is installed between the bottom support saddle (2) and the top support saddle (3); the turnover system (5) is installed above the barge body (1) and on the same side as the bottom support saddle (2); a separate top support saddle (3) is installed on the opposite side of the turnover system (5) and is used in conjunction with the turnover system (5); the lifting device (6) is installed above the barge body (1) and on the same side as the top support saddle (3).

2. The monopile transportation and turnover system according to claim 1, characterized in that: The bottom support saddle (2) and the top support saddle (3) appear in pairs in the form of two as a group and are evenly arranged on both sides of the barge body (1); the bottom support saddle (2) and the top support saddle (3) jointly support the monopile body (7).

3. The monopile transportation and turnover system according to claim 2, characterized in that: The bottom support saddle (2) comprises a first base (21), a first saddle body (22), a first clamping device (23), a second sliding system (24) and a first angle adjustment system (25); the first base (21) is installed above the barge body (1); the first saddle body (22) is installed above the first base (21) and is connected to the first base (21) by high-strength bolts; the first clamping device (23) is installed above the first saddle body (22), and two of them form a group; the second sliding system (24) is installed above the first saddle body (22) and is used to adjust the spacing of the first clamping device (23) to match the size of the single pile body (7); the first angle adjustment system (25) is installed on both sides of the first clamping device (23) and is used to adjust the angle of the first clamping device (23) to match the size of the single pile body (7).

4. The monopile transportation and turnover system according to claim 2, characterized in that: The top support saddle (3) comprises a second base (31), a second saddle body (32), a crossbeam (33), a second clamping device (34), a second angle adjustment system (35) and a height adjustment system (36); the second base (31) is installed above the barge body (1); the second saddle body (32) is installed above the second base (31) and is connected to the second base (31) by high-strength bolts; the crossbeam (33) is installed in the middle of the second saddle body (32) and is connected to the second saddle body (32) by a pin; the crossbeam (33) is provided with a plurality of groups of working holes of different heights to meet the setting requirements of different heights; the height adjustment system (36) is connected to the crossbeam (33), and the other end is connected to the second saddle body (32), and is used to adjust the height of the crossbeam (33) to match the storage height of the single pile body (7); the second clamping device (34) is installed above the crossbeam (33), and two are in a group; the second angle adjustment system (35) is installed on both sides of the second clamping device (34), and is used to adjust the angle of the second clamping device (34) to match the size of the single pile body (7).

5. The monopile transportation and turnover system according to claim 1, characterized in that: The first sliding system (4) is arranged between the bottom support saddle (2) and the top support saddle (3); there are two first sliding systems (4), which can bear the entire weight of the single pile body (7) when working simultaneously.

6. The monopile transportation and turnover system according to claim 5, characterized in that: The first sliding system (4) is height-adjustable; when the first sliding system (4) slides at a minimum height, it can freely pass through the bottom of the single pile body (7); when the first sliding system (4) slides at a maximum height, it can lift the single pile body (7) over the flipping system (5).

7. The monopile transportation and turnover system according to claim 5, characterized in that: The first sliding system (4) comprises a sliding track (41), a pulley body (42), a pulley traction system (43), a telescopic box (44), a platform bracket (45), a pre-set beam (46), a main jacking system (47), a secondary jacking system (48), a third clamping device (49) and a third angle adjustment system (410).

8. The monopile transportation and turnover system according to claim 7, characterized in that: The sliding track (41) is installed above the barge body (1), and the pulley body (42) is installed above the sliding track (41) and slides horizontally through the pulley traction system (43).

9. The monopile transportation and turnover system according to claim 7, characterized in that: There are two telescopic boxes (44), which are installed on both sides of the pulley body (42) and nested inside the pulley body (42). The pulley body (42) is provided with a special track for the telescopic boxes (44) to slide vertically.

10. The monopile transportation and turnover system according to claim 7, characterized in that: There are four main lifting systems (47), which are installed on both sides of the telescopic box (44) and nested inside the pulley body (42); the pulley body (42) is provided with a special track for the main lifting system (47) to slide vertically.

11. The monopile transportation and turnover system according to claim 7, characterized in that: The platform bracket (45) is nested inside the two telescopic boxes (44) and connected to the top of the telescopic boxes (44) through a pin shaft; the platform bracket (45) is nested outside the four main jacking systems (47) and connected to the main jacking systems (47) through high-strength bolts.

12. The monopile transportation and turnover system according to claim 7, characterized in that: The pre-set beam (46) is installed in the middle of the platform bracket (45) and is connected to the platform bracket (45) in the form of a pin shaft; a plurality of groups of working holes of different heights are arranged on the pre-set beam (46) to meet the setting requirements of different heights; the secondary jacking system (48) is installed on the platform bracket (45), and the other end is connected to the pre-set beam (46) for adjusting the height of the pre-set beam (46).

13. The monopile transportation and turnover system according to claim 7, characterized in that: The third clamping device (49) is installed above the prefabricated beam (46), and two of them form a group; the third angle adjustment system (410) is installed on both sides of the third clamping device (49) and is used to adjust the angle of the third clamping device (49) to match the size of the monopile body (7).

14. The monopile transportation and turnover system according to claim 1, characterized in that: The turnover system (5) comprises a third base (51), a base (52), a telescopic arm (53), a folding frame (54), a pre-set frame (55), a main lifting hydraulic cylinder (56), a bracket (57), a grab bucket (58) and a sliding box (59).

15. The monopile transportation and turnover system according to claim 14, characterized in that: There are two third bases (51), which are installed above the barge body (1) and on the same side as the bottom support saddle (2); the base (52) is installed above the third base (51) and is connected to the third base (51) by high-strength bolts.

16. The monopile transportation and turnover system according to claim 14, characterized in that: The telescopic arm (53) is installed at the upper hinge point of the base (52), the folding frame (54) is installed at the lower hinge point of the base (52), and the outer end of the telescopic arm (53) is connected to the folding frame (54) through a pin shaft.

17. The monopile transportation and turnover system according to claim 14, characterized in that: The telescopic arm (53) comprises a backing hinge box (531), a backing sliding box (532), a backing telescopic rod (533) and a telescopic hydraulic cylinder (534); the backing sliding box (532) is nested inside the backing hinge box (531), and a special track is provided on the backing sliding box (532) so that the backing hinge box (531) can slide inside; the backing telescopic rod (533) is nested inside the backing sliding box (532), and a special track is provided on the backing telescopic rod (533) so that the backing hinge box (532) can slide inside.

18. The monopile transportation and turnover system according to claim 17, characterized in that: The back hinge box (531), the back sliding box (532) and the back telescopic rod (533) are connected by a pin shaft; the back sliding box (532) and the back telescopic rod (533) are connected by another pin shaft; a plurality of groups of working holes are arranged on the back telescopic rod (533) to meet different extension length requirements; the telescopic hydraulic cylinder (534) is installed between the back hinge box (531) and the back sliding box (532), and the telescopic hydraulic cylinder (534) is reciprocated to switch the working holes of the back telescopic rod (533), thereby changing the telescopic length of the telescopic arm (53), and then pushing the folding frame (54) to realize the pitching action of the flipping system (5).

19. The monopile transportation and turnover system according to claim 14, characterized in that: The bracket (57) is installed between the two folding frames (54) and is connected to the outer ends of the folding frames (54) via a pin.

20. The monopile transportation and turnover system according to claim 19, characterized in that: The bracket (57) is provided with a clamping device, including a bottom clamping device (571) and a top clamping device (572); the working angles of the bottom clamping device (571) and the top clamping device (572) can be adjusted to match the size of the single pile body (7); the bottom clamping device (571) and the top clamping device (572) work together to prevent the single pile body (7) from slipping and falling off during the pile turning process.

21. The monopile transportation and turnover system according to claim 14, characterized in that: The pre-mounted frame (55) is installed on the outside of the folding frame (54), and the main hinge point shares the same pin shaft with the folding frame (54) and the bracket (57); the top hinge point of the pre-mounted frame (55) is connected to the bracket (57) for completely fixing the pre-mounted frame (55) on the bracket (57); the end of the pre-mounted frame (55) is connected to the main lifting hydraulic cylinder (56), and the other end of the main lifting hydraulic cylinder (56) is connected to the hinge point at the bottom of the folding frame (54); the main lifting hydraulic cylinder (56) reciprocates to push the pre-mounted frame (55) to rotate around the hinge point at the end of the folding frame (54), thereby pushing the bracket (57) to realize the flipping action of the flipping system (5).

22. The monopile transportation and turnover system according to claim 21, characterized in that: The bracket (57) is provided with a plurality of groups of working holes to meet the different working angle requirements of the pre-set frame (55).

23. The monopile transportation and turnover system according to claim 14, characterized in that: The grab bucket (58) is in a "U" shape and is nested in the bracket (57); there are two slide boxes (59) which are respectively nested outside the cantilever arms on both sides of the grab bucket (58); the grab bucket (58) is provided with a plurality of groups of working holes arranged evenly and connected to the bracket (57) and the slide box (59) respectively through a pin connection; the bracket (57) and the slide box (59) are connected by a slide box hydraulic cylinder (591), and the position adjustment of the grab bucket (58) is achieved through the reciprocating motion of the slide box hydraulic cylinder (591).

24. The monopile transportation and turnover system according to claim 14, characterized in that: A "V"-shaped beam structure (581) is provided at the bottom of the grab bucket (58) for supporting the bottom of the single pile body (7); the "V"-shaped beam structure (581) is provided with a fourth clamping device (582) for clamping the single pile body (7) to prevent the single pile body (7) from slipping and falling off during the pile turning process.

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