Large component hoisting apparatus for offshore shallow water and hoisting method thereof

Abstract

The application discloses offshore shallow water area large component hoisting equipment and a hoisting method thereof. The application can smoothly transport large components with large volume to offshore construction sites, and stably hoist the large components, so that the steel pipe column is stably and quickly aligned and inserted into the steel pipe pile, the installation efficiency is improved, the connecting beam, the buckling groove and the buckling block are arranged, the wharf track, the connecting track and the deck track can be quickly butt-jointed together when needed, a double track compatible with the track type hydraulic trolley is formed, the large components are transported from the wharf to the transfer ship in a time-saving and labor-saving manner, the connecting beam is removed after the transportation is completed to avoid hindering the running of other ships at the wharf, and the stability of the large components during hoisting is further improved through the arrangement of the unloading buckle, the balance hoisting beam, the steel wire rope ring and the soft hoisting rope ring.

Description

TECHNICAL FIELD

[0001] The present application relates to the hoisting technical field, in particular to a large component hoisting equipment and a hoisting method for offshore shallow water area. BACKGROUND

[0002] The offshore booster station collects all the power collection lines of the wind farm and boosts them for transmission, and the offshore booster station is the power collection center and emergency shelter of the offshore wind farm. The piling ship is used to sink piles in advance for construction, and the jacket is built in the offshore shallow water area as a base. The jacket has four steel pipe piles higher than the sea level at the top end. The offshore booster station has two large components, i.e., the main station upper block and the auxiliary station upper block. Each large component is provided with four steel pipe columns matched with the steel pipe piles. After the steel pipe columns are inserted into the steel pipe piles, they are welded or grouted to complete the installation of the large components in the offshore shallow water area.

[0003] It is difficult to build offshore, and the large components need to be built in advance in the factory at the wharf, then transported to the corresponding steel pipe pile on the sea by ship, and then hoisted to the corresponding steel pipe pile by the offshore hoisting ship. Then the large component is slowly lowered until the steel pipe column at the bottom of the large component enters the steel pipe pile. The connection between the steel pipe column and the steel pipe pile is welded or grouted to complete the installation of the large component. The crane ship, also known as the floating crane ship, is used for water lifting, hoisting operation, and is generally non-self-propelled, but also self-propelled. The crane ship is equipped with a crane. The self-propelled crane ship is usually used for operation, and its crane can rotate. When hoisting large objects, two crane ships can be combined for operation, and the ship body can be a non-self-propelled box deck barge.

[0004] However, the existing large component hoisting equipment in the offshore shallow water area has the problems of difficult transportation of large components with large volume, poor stability during hoisting, and the need for a large amount of time to align the steel pipe column and the steel pipe pile, resulting in low installation efficiency. SUMMARY

[0005] The purpose of the present application is to provide a large component hoisting equipment and a hoisting method for offshore shallow water area to solve the problems in the background art.

[0006] In order to solve the above technical problems, the present application provides the following technical scheme: a large component hoisting equipment for offshore shallow water area, including a large component and its bottom steel pipe column, a built steel pipe pile on the sea, a transport ship, an offshore hoisting ship, and a tugboat and anchor boat for towing, and a translation mechanism, the translation mechanism is provided with a matched track type hydraulic trolley, the track type hydraulic trolley is movably connected with a flat supporting frame, the flat supporting frame is used to support and place the large component at the top end, the offshore hoisting ship is hung with a hoisting cable assembly for hoisting the large component, and the top end of the large component is provided with four lifting lugs one, which is convenient for four-point hoisting.

[0007] Furthermore, the translation mechanism includes a dock track installed at the dock. The dock track connects with a deck track installed on the deck of the receiving vessel via a connecting track installed on a connecting beam, forming a continuous pressure-bearing track. The dock track, the connecting track, and the deck track are all double-track tracks adapted to the rail-type hydraulic trolley. The connecting beam has two lifting lugs on both sides of its top, and semi-circular groove-shaped fastening slots at both ends of its bottom. The end of the dock track near the connecting beam is a loading end one, and the end of the deck track near the connecting beam is a loading end two. The outer walls of both loading end one and loading end two are provided with semi-circular tubular fastening blocks adapted to the fastening slots.

[0008] Furthermore, the sling assembly includes shackles, a balance beam, wire rope loops, and flexible sling loops. The bottom end of the beam of the offshore lifting vessel is connected to the balance beam via the wire rope loops. The bottom end of the balance beam is connected to the shackles via the flexible sling loops. The shackles are connected to the lifting lugs. There are four shackles, with two shackles in the front row and the other two in the rear row. The two wire rope loops on the same side, one in front and one behind, are connected by the balance beam.

[0009] Furthermore, the track-type hydraulic trolley is equipped with a weighing module, a remote monitoring system, and a display. The load is displayed on the display, and the trolley can be remotely controlled to perform loading, weighing, and translation into position.

[0010] Furthermore, the offshore crane vessel is the Sihang Fenjin, and both the offshore crane vessel and the receiving vessel are non-self-propelled.

[0011] The specific lifting method for large structural components in shallow marine waters is as follows:

[0012] Step 1: Loading preparation. The receiving vessel is berthed at the dock by tugboats and anchor boats, ensuring that the bow of the receiving vessel is aligned with the dock rails. Connecting beams are installed to connect the dock rails and deck rails, forming a continuous, pressure-bearing rail system. At the dock, two rows of rail-mounted hydraulic trolleys are positioned on the rails on both sides of the translation mechanism. Flat support racks are located on the two rows of rail-mounted hydraulic trolleys, and large components are placed on the flat support racks. The flat support racks and hydraulic trolleys support the large components. Preparations are carried out by checking before the trolleys are started.

[0013] Step Two: The large component is moved onto the barge. The rail-mounted hydraulic trolley is activated, and its internal cylinders lift sequentially to their contacts. Simultaneously, the support frame is lifted, detaching the large component from its ground seat. After the cylinders in the rail-mounted hydraulic trolley reach the set height, they are stopped. The trolley then moves along the dock tracks, connecting tracks, and deck tracks, stopping at the barge's deck pressurization station. The cylinders of the trolley then descend, and the support frame sits in the designated position, allowing the large component to settle. The large component is then secured and reinforced for easy transport, completing the transfer and loading of the large component onto the barge. The rail-mounted hydraulic trolley returns to its original position, ending the transfer operation. Within the barge's carrying capacity, several large components can be transferred onto the barge using the same method.

[0014] Step 3: Transportation preparation. Before transportation, a special inspection of the main equipment inside the large components will be carried out.

[0015] Step 4: Water transport. Tugboats and anchor boats work together to tow the receiving vessel to the target location at the offshore installation site, that is, near the steel pipe piles. The offshore crane vessel enters the preset lifting position and then stops. The receiving vessel pulls the large components into the working range of the offshore crane vessel and stops.

[0016] Step 5: Lifting on water. Use an electric saw to release the bindings, and operate the hook assembly of the offshore lifting vessel to reach above the large component. Connect the shackle to the lifting lug, and the offshore lifting vessel raises the hook to lift the large component to the preset height. The receiving vessel moves away from the offshore lifting vessel's operating range to avoid interfering with the offshore lifting vessel's hook raising operation. Adjust the position of the offshore lifting vessel by winding the anchor rope, and finally suspend the large component above the steel pipe pile through the hook assembly.

[0017] Step Six: Offshore Installation. The offshore crane vessel lowers the hook assembly and large components. The guy ropes on the offshore crane vessel are adjusted and aligned so that the steel pipe column at the bottom of the large component is aligned with the steel pipe pile. The large component is then in place. Welding and grouting are performed at the connection between the steel pipe column and the steel pipe pile to complete the hoisting of the large component. The offshore crane vessel releases the hook, and the workers release the hook assembly. The offshore crane vessel is then adjusted by winding the anchor rope to return to its initial target position and reset, facilitating the same hoisting of subsequent large components.

[0018] Furthermore, the specific steps for checking the trolley before starting in step one are as follows: routine trolley inspection; positioning and arranging according to the layout diagram of the track-type hydraulic trolley; checking whether the large reinforcement of the flat support frame used is symmetrical with the main cylinder of the track-type hydraulic trolley, with the deviation distance within 9-11cm; connecting the corresponding accessories; debugging; and confirming whether the height of the upper part of the track-type hydraulic trolley and the transported object are on the same horizontal plane. If the difference is too large, use wooden boards to support the trolley during repair to ensure that the height of all cylinders is as close to the same horizontal plane as possible when lifting, so as to avoid serious damage to the oil seal of the main cylinder; and test lifting.

[0019] Furthermore, the specific inspection in step three includes: reinforcing the anchor bolts of large components or welding and reinforcing the base of large components with small channel steel; bundling the cables of the wired equipment; returning all electrical box switches to zero; closing the electrical box doors tightly; and sealing the main equipment room door.

[0020] Furthermore, in step four, four wire anchors are deployed at the bow and stern of the receiving vessel and can be moved in each direction by winding the anchor ropes on the receiving vessel.

[0021] Furthermore, the offshore crane vessel is equipped with six wire anchors at the bow and stern, which can be moved in different directions by winding the anchor ropes on the offshore crane vessel.

[0022] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0023] This invention, through the configuration of a translation mechanism, a rail-type hydraulic trolley, a flat support frame, a sling assembly, steel pipe piles, a transport vessel, and an offshore lifting vessel, allows tugboats to tow the transport vessel to the target location at the offshore installation site, i.e., near the steel pipe piles. The offshore lifting vessel then enters the pre-set lifting position and positions itself. The transport vessel, carrying large components, enters the working range of the offshore lifting vessel and positions itself, enabling the smooth transport of large components to the offshore construction site. It allows for the stable lifting of large components, thus stably and quickly aligning and inserting the steel pipe column into the steel pipe pile, improving installation efficiency. By incorporating connecting beams, locking grooves, and locking blocks, the dock rails, connecting rails, and deck rails can be quickly connected when needed, forming a double-track system compatible with the rail-type hydraulic trolley. This saves time and effort in transporting large components from the dock to the transport vessel. After transport, the connecting beams can be removed to avoid obstructing other vessels at the dock. The use of shackles, balance beams, wire rope loops, and soft sling loops further enhances the stability of large components during lifting. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of the structure of the offshore lifting vessel in this invention;

[0026] Figure 2 This is a structural diagram of a marine lifting vessel lifting large components in this invention;

[0027] Figure 3 This is a schematic diagram of the structure of the two front row shackles in this invention;

[0028] Figure 4 This is a schematic diagram of the structure of the two rear shackles in this invention;

[0029] Figure 5 This is a schematic diagram of the structure of the balance beam in this invention;

[0030] Figure 6 This is a schematic diagram of the structure of the track-type hydraulic trolley in this invention;

[0031] Figure 7 This is a schematic diagram of the connecting beam in this invention;

[0032] Figure 8 This is a schematic diagram of the structure of the receiving vessel when it is located at the target position in this invention;

[0033] Figure 9 This is a schematic diagram of the structure of the first lifting lug in this invention;

[0034] Figure 10 This is a schematic diagram of the structure of the tugboat and anchor boat working together to tow and retrieve the transport vessel in this invention;

[0035] Figure 11 This is a schematic diagram of the structure of the six wire anchors installed at the bow and stern of the receiving vessel in this invention;

[0036] Figure 12 This is a schematic diagram of the structure of the six wire anchors installed at the bow and stern of the offshore crane vessel in this invention;

[0037] In the diagram: 1. Large component; 2. Hydraulic cylinder; 3. Steel pipe pile; 4. Transport vessel; 5. Offshore lifting vessel; 6. Rail-mounted hydraulic trolley; 7. Flat support frame; 8. Dock rail; 9. Connecting beam; 10. Connecting rail; 11. Deck rail; 12. Fastening groove; 13. Fastening block; 14. Balance lifting beam; 15. Wire rope loop; 16. Soft sling rope loop; 17. Tugboat; 18. Anchor boat; 19. Lifting lug one; 20. Loading end one; 21. Loading end two; 22. Lifting lug two; 23. Shackle. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1-12This invention provides a technical solution: a large component hoisting equipment for shallow water areas at sea, including a large component 1 and its bottom steel pipe column, a completed steel pipe pile 3 at sea, a receiving vessel 4, a marine hoisting vessel 5, and tugboats 17 and anchor boats 18 for lashing. It also includes a translation mechanism, on which a matching rail-mounted hydraulic trolley 6 is provided. A flat support frame 7 is movably connected to the rail-mounted hydraulic trolley 6, which supports the large component 1 placed at its top. The marine hoisting vessel 5 is equipped with a sling assembly for hoisting the large component 1. The top of component 1 is equipped with four lifting lugs 19 for easy four-point lifting. The translation mechanism includes a dock rail 8 located at the dock. The dock rail 8 connects to a deck rail 11 located on the deck of the receiving vessel 4 via a connecting rail 10 located on a connecting beam 9, forming a continuous pressure-bearing rail. The dock rail 8, the connecting rail 10, and the deck rail 11 are all double-track rails adapted to the rail-type hydraulic trolley 6. The top two sides of the connecting beam 9 are equipped with lifting lugs 22, and the bottom two ends of the connecting beam 9 are equipped with semi-circular groove-shaped fastening slots 12. The end of the dock track 8 near the connecting beam 9 is the first loading end 20, and the end of the deck track 11 near the connecting beam 9 is the second loading end 21. Both the first loading end 20 and the second loading end 21 have semi-circular tubular fastening blocks 13 on their outer walls that are adapted to the fastening groove 12. The sling assembly includes a shackle 23, a balance beam 14, a wire rope loop 15, and a flexible sling rope loop 16. The bottom end of the lifting beam of the offshore lifting vessel 5 is connected to the balance beam 14 via the wire rope loop 15, and the bottom end of the balance beam 14 is connected to the shackle via the flexible sling rope loop 16. The shackle 23 is connected to the lifting lug 19. There are four shackles 23, two of which are located in the front row and the other two are located in the rear row. The two wire rope loops 15 on the same side are connected by the balance beam 14. The rail-type hydraulic trolley 6 is equipped with a weighing module, a remote monitoring system and a display. The load is displayed on the display and the lifting, weighing and translation positioning are remotely controlled. The offshore lifting vessel 5 is the Sihang Fenjin. Both the offshore lifting vessel 5 and the receiving vessel 4 are non-self-propelled.

[0040] The specific lifting method for large structural components in shallow marine waters is as follows:

[0041] Step 1: Loading preparation. The receiving vessel 4 is berthed at the dock by tugboat 17 and anchor boat 18, so that the bow of the receiving vessel 4 is aligned with the dock track 8. The connecting beam 9 is installed, and the dock track 8 and deck track 11 are connected together by the connecting track 10 to form a continuous pressure-bearing track. At the dock, two rows of rail-type hydraulic trolleys 6 are located on the tracks on both sides of the translation mechanism. The flat support frame 7 is located on the two rows of rail-type hydraulic trolleys 6. The large component 1 is located on the flat support frame 7. The flat support frame 7 and the hydraulic trolleys support the large component 1. The preparation work is checked before the trolleys are started.

[0042] Step Two: Move the large component 1 onto the barge 4. Start the rail-mounted hydraulic trolley 6. The hydraulic cylinders 2 inside the trolley will lift and touch the top in sequence, and the flat support frame 7 will lift simultaneously. The large component 1 will detach from the ground pier. After the hydraulic cylinders 2 inside the rail-mounted hydraulic trolley 6 are lifted to the set height, stop. The rail-mounted hydraulic trolley 6 will then move along the dock rail 8, connecting rail 10, and deck rail 11. After reaching the stop position at the deck booster station of the barge 4, stop. Stop the hydraulic cylinders 2 of the rail-mounted hydraulic trolley 6. The flat support frame 7 will sit in the predetermined position, and the large component 1 will sit down. The large component 1 will be tied and reinforced for easy transport, completing the transfer and loading of the large component 1 onto the barge. The rail-mounted hydraulic trolley 6 will return to its original position, and the transfer operation will be completed. Within the carrying capacity of the barge 4, several large components 1 can be transferred onto the barge 4 using the same method.

[0043] Step 3: Transportation preparation. Before transportation, a special inspection of the main equipment inside large component 1 shall be carried out.

[0044] Step 4: Water transport. The tugboat 17 and the anchor boat 18 work together to tow the receiving vessel 4 to the target location at the offshore installation site, that is, near the steel pipe pile 3. The offshore crane vessel 5 enters the preset lifting position and then stops. The receiving vessel 4 pulls the large component 1 into the working range of the offshore crane vessel 5 and then stops.

[0045] Step 5: Lifting on water. Use an electric saw to untie the bindings, and operate the hook assembly of the offshore lifting vessel 5 to reach above the large component 1. Connect the shackle 23 to the lifting lug 19. The offshore lifting vessel 5 raises the hook to lift the large component 1 to the preset height. The transport vessel 4 moves away from the working range of the offshore lifting vessel 5 to avoid interfering with the lifting operation of the offshore lifting vessel 5. Adjust the position of the offshore lifting vessel 5 by winding the anchor rope. Finally, the large component 1 is suspended above the steel pipe pile 3 by the hook assembly.

[0046] Step Six: Offshore Installation. The offshore crane vessel 5 lowers the hook assembly and large component 1. The guy ropes on the offshore crane vessel 5 are adjusted and aligned so that the steel pipe column at the bottom of the large component 1 is aligned with the inserted steel pipe pile 3. The large component 1 is in place. Welding and grouting are performed at the connection between the steel pipe column and the steel pipe pile 3 to complete the hoisting of the large component 1. The offshore crane vessel 5 releases the hook, and the workers release the hook assembly. The offshore crane vessel 5 is then adjusted by winding the anchor rope to return to the initial target position for resetting, facilitating the same hoisting of subsequent large components 1.

[0047] Specifically, the steps for checking the trolley before starting in step one are as follows: routine trolley inspection; positioning and arranging according to the layout diagram of the track-type hydraulic trolley 6; checking whether the large reinforcement of the flat support bracket 7 and the main oil cylinder 2 of the track-type hydraulic trolley 6 are symmetrical, with a deviation distance within 9-11cm; connecting the corresponding accessories; debugging; and reconfirming whether the height of the upper part of the track-type hydraulic trolley 6 and the transported object are on the same horizontal plane. If the difference is too large, use wooden boards to support the trolley during repairs to ensure that the height of all oil cylinders 2 is as close to the same horizontal plane as possible when lifting simultaneously, avoiding damage to the oil seal of the main oil cylinder 2. The specific inspection in step three is as follows: reinforce the anchor bolts of large component 1 or weld and reinforce the base of large component 1 with small channel steel; bundle the cables of the connected equipment; return all electrical box switches to zero; close the electrical box doors tightly; and seal the main equipment room door. In step four, four wire anchors are deployed at the bow and stern of the receiving vessel 4. They can be moved in all directions by the winding anchor ropes on the receiving vessel 4. Six wire anchors are set at the bow and stern of the offshore crane vessel 5. They can be moved in all directions by the winding anchor ropes on the offshore crane vessel 5.

[0048] Working principle of the invention:

[0049] Refer to the instruction manual appendix Figure 1 -Appendix Figure 12This invention, through the arrangement of a translation mechanism, a track-type hydraulic trolley 6, a flat support frame 7, a sling assembly, a steel pipe pile 3, a transport vessel 4, and an offshore lifting vessel 5, enables a tugboat 17 to tow the transport vessel 4 to the target location at the offshore installation site, i.e., near the steel pipe pile 3. The offshore lifting vessel 5 then enters the preset lifting position and remains stationary. The transport vessel 4, carrying the large component 1, enters the working range of the offshore lifting vessel 5 and remains stationary. This allows for the smooth transport of large components 1 to the offshore construction site and the stable lifting of large components 1, thereby enabling the stable and rapid alignment and insertion of the steel pipe pile into the steel pipe. In pile 3, to improve installation efficiency, by setting up connecting beam 9, fastening groove 12 and fastening block 13, the dock rail 8, connecting rail 10 and deck rail 11 can be quickly connected together when needed to form a double track that is compatible with the rail-type hydraulic trolley 6. This saves time and effort to transport large components 1 from the dock to the receiving vessel 4. After transportation, the connecting beam 9 can be removed to avoid obstructing the passage of other vessels at the dock. By setting up shackle 23, balance lifting beam 14, wire rope loop 15 and soft sling rope loop 16, the stability of large components 1 during lifting is further improved.

[0050] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A large component lifting device for offshore shallow water areas, comprising a large component (1) and a steel pipe column at the bottom end thereof, a completed steel pipe pile (3) at sea, a transport ship (4), an offshore lifting ship (5), and a tugboat (17) and an anchor boat (18) for towing, characterized in that: Also include the translation mechanism, the translation mechanism is equipped with the rail type hydraulic trolley (6), the rail type hydraulic trolley (6) is movably connected with the flat supporting frame (7), the flat supporting frame (7) is used to support the large component (1) placed on the top end thereof, the offshore lifting ship (5) is hung with a sling assembly for lifting the large component (1), the top end of the large component (1) is provided with four lifting lugs (19), so as to facilitate four-point lifting; The translation mechanism includes a wharf track (8) provided on the wharf, the wharf track (8) is connected with a deck track (11) provided on the deck of the transport ship (4) through a connecting track (10) provided on the connecting beam (9), forming a continuous pressure-bearing track, the wharf track (8), the connecting track (10) and the deck track (11) are all double tracks matched with the rail type hydraulic trolley (6), the connecting beam (9) is provided with two lifting lugs (22) on the top of both sides, the connecting beam (9) is provided with a semicircular groove-shaped buckling groove (12) at the bottom of both ends, one end of the wharf track (8) close to the connecting beam (9) is an end one (20), one end of the deck track (11) close to the connecting beam (9) is an end two (21), the outer walls of the end one (20) and the end two (21) are provided with semicircular pipe-shaped buckling blocks (13) matched with the buckling grooves (12). The sling assembly includes a shackle (23), a balance lifting beam (14), a steel wire rope loop (15) and a soft sling rope loop (16), the bottom end of the lifting beam of the offshore lifting ship (5) is connected with the balance lifting beam (14) through the steel wire rope loop (15), the bottom end of the balance lifting beam (14) is connected with the shackle (23) through the soft sling rope loop (16), the shackle (23) is connected with the lifting lug (19), the shackle (23) is provided with four, two of which are located in the front row, and the other two are located in the rear row, and the two steel wire rope loops (15) on the same side are connected through the balance lifting beam (14).

2. Offshore shallow water zone large component hoisting apparatus according to claim 1, characterized in that: The rail type hydraulic trolley (6) is provided with a weighing module, a remote control monitoring system and a display, the load is displayed on the display, and the load is remotely controlled to be placed, weighed and translated to the position.

3. Offshore shallow water zone large component hoisting apparatus according to claim 1, characterized in that: The offshore lifting ship (5) adopts the four-horizon pioneer, and the offshore lifting ship (5) and the transport ship (4) are both non-self-propelled.

4. The method according to any one of claims 1-3, c h a ra cte ri zed i n that: The specific hoisting method is as follows: Step one: loading preparation, the receiving ship (4) is moored to the wharf by the cooperation of the tug (17) and the anchor boat (18), so that the bow of the receiving ship (4) is in a straight line with the wharf track (8), the connecting beam (9) is installed, the wharf track (8) and the deck track (11) are connected together through the connecting track (10) to form a continuous pressure-bearing track, on the wharf, the two rows of track-type hydraulic trolleys (6) are located on the tracks on both sides of the translation mechanism, the flat supporting frame (7) is located on the two rows of track-type hydraulic trolleys (6), the large component (1) is located on the flat supporting frame (7), the flat supporting frame (7) and the hydraulic trolley support the large component (1), and the preparation work is checked before the trolley starts; Step two: translation into the receiving ship (4), the track-type hydraulic trolley (6) is started, the oil cylinder (2) in the track-type hydraulic trolley (6) is lifted in turn according to the group, the flat supporting frame (7) is lifted synchronously, the large component (1) is separated from the seat pier on the ground, the oil cylinder (2) in the track-type hydraulic trolley (6) is lifted to the set height, then fixed, the track-type hydraulic trolley (6) starts to move along the wharf track (8), the connecting track (10) and the deck track (11), stops at the receiving ship (4) deck pressure station parking position, then fixed, the oil cylinder (2) of the track-type hydraulic trolley (6) is lowered, the flat supporting frame (7) is parked at the predetermined position, the large component (1) is landed, the large component (1) is bound and reinforced for convenient transportation, and the translation of the large component (1) into the receiving ship (4) is completed; the track-type hydraulic trolley (6) returns to the original position along the original path, and the translation operation is completed; within the bearing range of the receiving ship (4), the same method can be used to translate several large components (1) into the receiving ship (4); Step three: transportation preparation, the main equipment in the large component (1) is specially checked before transportation; Step four: water transportation, the receiving ship (4) is carried to the target position near the steel pipe pile (3) at the offshore installation site by the cooperation of the tug (17) and the anchor boat (18), the offshore hoisting ship (5) enters the preset hoisting position and stops, and the receiving ship (4) drives the large component (1) into the operation range of the offshore hoisting ship (5) and stops; Step five: offshore hoisting, the binding is removed by using an electric saw, the hook assembly of the offshore hoisting ship (5) reaches above the large component (1), the shackle (23) is connected with the lifting lug (19), the offshore hoisting ship (5) is lifted to the preset height, the receiving ship (4) moves away from the operation range of the offshore hoisting ship (5) to avoid interfering with the lifting operation of the offshore hoisting ship (5), the position of the offshore hoisting ship (5) is adjusted through the anchor rope, and finally the large component (1) is suspended above the steel pipe pile (3) through the hook assembly.Step six: offshore installation, offshore lifting ship (5) drive the lifting hook assembly, large component (1) down, the cable wind rope on the offshore lifting ship (5) is adjusted to position, so that the steel pipe column at the bottom of the large component (1) is aligned and inserted into the steel pipe pile (3), the large component (1) is in place, welding and grouting at the connection between the steel pipe column and the steel pipe pile (3) complete the lifting of the large component (1), the offshore lifting ship (5) is released, the workers release the lifting hook assembly, the offshore lifting ship (5) is adjusted by winding the anchor rope to drive the offshore lifting ship (5) back to the original target position for resetting, facilitating the same lifting of the subsequent large component (1).

5. The method of claim 4, wherein: The specific steps of the inspection before the trolley starts in step one are: routine inspection of the trolley, positioning and arrangement according to the rail type hydraulic trolley (6) layout, checking whether the large component (1) is symmetrically arranged with the main oil cylinder (2) of the rail type hydraulic trolley (6), the deviation distance is within 9-11cm, connecting the corresponding accessories, debugging, and then confirming whether the height of the upper part of the rail type hydraulic trolley (6) and the transported object is on the same horizontal plane, if the difference is too large, the trolley is repaired with a wooden board to ensure that the heights of all oil cylinders (2) are as close to the same horizontal plane as possible during lifting to avoid serious damage to the oil seal of the main oil cylinder (2), and the top is tested.

6. The method of claim 4, wherein: The special inspection in the step three is: reinforcing the foundation bolts of the large component (1) or welding and reinforcing the base of the large component (1) by using small channel steel, bundling the cables of the connected equipment, returning all electric boxes to zero, closing the electric box door, and locking the main equipment door.

7. The method of claim 4, wherein: In the step four, four steel wire anchors are arranged at the bow and stern of the connecting ship (4) for positioning, and the steel wire anchors can be moved in each direction through the winding and winding ropes on the connecting ship (4).

8. The method of claim 4, wherein: Six steel wire anchors are arranged at the bow and stern of the offshore hoisting ship (5) for positioning, and the steel wire anchors can be moved in each direction through the winding and winding ropes on the offshore hoisting ship (5).

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