A roll-on / roll-off transport device for a jacket and a method of using the same

Abstract

The present invention discloses a device for the roll-on / roll-off transportation of a conductor frame, comprising a conductor frame leg fastening support frame, a deck temporary clamping base, a module vehicle and a temporary clamping base, wherein the conductor frame leg fastening support frame is composed of a detachable first clamp and a second clamp, the module vehicle is connected to the second clamp, and a fixing area for fixing the conductor frame leg is provided in the middle of the first clamp and the second clamp; the deck temporary clamping base is composed of a fixing frame, a clamping frame, a hydraulic cylinder and an arc-shaped pressure plate, and the conductor frame leg fastening support frame and the deck temporary clamping base are fastened and connected by turnbuckle bolts. The present invention transports conductor frames by roll-on / roll-off transportation, and has the advantages of high roll-on / roll-off transportation efficiency, saving transportation space, simple installation and fixing operations, and high conductor frame transportation stability.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power generation foundations, and in particular to a roll-on / roll-off transportation device for a jacket and a method of using the same. Background Art

[0002] As the concept of "low-carbon emissions" deepens, offshore wind power has begun to be widely popularized as an advantageous green and clean energy. Wind turbine foundation accounts for about 20% to 30% of the total cost of wind farms. Reasonable foundation structure and safe and efficient foundation construction have become the focus of offshore wind farm engineering construction. At present, the main forms of offshore wind turbine foundation structures include single pile foundation, pile group foundation, pile-type jacket foundation, suction jacket foundation, floating foundation, gravity foundation, three (multi) tripod foundation and pile bucket composite foundation. As the domestic and foreign offshore wind power markets continue to expand and move towards the deep sea, the actual demand for ultra-large units is increasing, and the design size of wind power foundation structures is developing towards large-scale. Among them, the jacket foundation is widely used due to its high bearing capacity, convenient transportation and mature construction technology.

[0003] After the jacket is manufactured in the factory, it is usually loaded onto a transport ship by hoisting or roll-on / roll-off, and then floated to the wind farm. The traditional hoisting method generally uses a dock gantry crane for loading. When the manufacturing plant dock is not equipped with a gantry crane or the performance of the gantry crane cannot meet the use requirements, a crane ship can be used for hoisting and loading. As the wind turbine foundation gradually develops to the deep sea, the foundation structure develops in the direction of large size and mass. The general dock gantry crane cannot meet the hoisting requirements, and the resource allocation cost of large crane ships is high. Therefore, roll-on / roll-off loading is more commonly used. Compared with hoisting loading, roll-on / roll-off loading is to load the jacket by lifting the entire jacket with a module car and then moving it to the transport ship. It has small resource investment, flexible operation and strong adaptability. However, roll-on / roll-off loading has high requirements for the transport ship. The process of the module car moving from the dock to the transport ship requires that the deck of the transport ship is basically level with the dock. At the same time, the existing roll-on / roll-off transportation mostly uses gantry transportation, and there are special requirements for the freeboard height and loading capacity of the transport ship. After being transported onto the ship, the column base still needs to be welded and fixed, and the welds need to be cut after being transported to the destination, which makes the transportation and loading and unloading process of the jacket more cumbersome.

[0004] The present invention aims to solve the problem of offshore wind power conductor frame transportation. It provides a device suitable for rapid roll-on / roll-off transportation of conductor frames, which can achieve the effects of rapid fixation of conductor frame column legs, lifting column legs relying on only a single module trolley, and rapid fixation of leg ends on the deck, etc. It has the advantages of high roll-on / roll-off transportation efficiency, saving transportation space, simple installation and fixing operations, and high conductor frame transportation stability, and is of great significance to the construction of offshore wind farms. Summary of the invention

[0005] The object of the present invention is to provide a roll-on / roll-off transportation device for a jacket and a method of using the same to solve the above technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for the roll-on / roll-off transportation of a conductor frame, comprising a conductor frame leg fastening support frame, a deck temporary clamping base, a module vehicle and a temporary clamping base, the conductor frame leg fastening support frame is composed of a detachable first clamp and a second clamp, the module vehicle is connected to the second clamp, and a fixing area for fixing the conductor frame leg is provided in the middle of the first clamp and the second clamp;

[0007] The temporary deck clamping base is composed of a fixed frame, a clamping frame, a hydraulic cylinder, and an arc-shaped pressure plate. The conductor frame leg fastening support frame and the temporary deck clamping base are fastened and connected using turnbuckle bolts.

[0008] Preferably, the first clamp is composed of a first upper semicircular iron ring, a first lower semicircular iron ring, and a vertical rod for connecting the first upper semicircular iron ring and the first lower semicircular iron ring, and the second clamp is composed of a second upper semicircular iron ring, a second lower semicircular iron ring, and a vertical rod for connecting the second upper semicircular iron ring and the second lower semicircular iron ring, the second lower semicircular iron ring is connected to a support platform, and the module car is connected to the lower part of the support platform.

[0009] Preferably, a reinforcing rod is connected between the second upper semicircular iron ring and the supporting platform.

[0010] Preferably, the fixed frame is provided with multiple groups of through holes on the outer walls on both sides, the clamping frame is provided with multiple groups of matching holes, the fixed frame is provided with fixing bolts for passing through the through holes and the matching holes to fix the fixed frame and the clamping frame, the hydraulic cylinder is fixed on the clamping frame, and the output end of the hydraulic cylinder is connected to the arc pressure plate.

[0011] Preferably, a pressure plate is slidably provided on the clamping frame, and a pressure spring is connected between the arc-shaped pressure plate and the pressure plate.

[0012] A method for using a jacket roll-on / roll-off transport device comprises the following steps:

[0013] Step 1: First, install the catheter frame leg fastening support frame at the catheter frame leg, place the fastening support frame support plate toward the inside of the catheter frame, and then fasten the first clamp and the second clamp as a whole with bolts;

[0014] Step 2: The transport trolley is in place at each leg, and the trolley synchronously lifts the supporting platform. After lifting to a predetermined height, the module trolley transports the jacket to the deck. After the jacket reaches the designated position, each leg end of the jacket is placed in a temporary clamping base;

[0015] Step 3: After adjusting the position of the plug leg, pressurize and clamp the end of the plug leg to ensure reliable restraint on the horizontal plane of the catheter rack;

[0016] Step 4: Use marine turnbuckle bolts to tension and connect the outer side of the conductor frame support frame and the outer side fixed points of the temporary clamping base into a whole, so as to ensure reliable vertical constraint of the conductor frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention adopts a single-leg single-side trolley for transportation, which reduces the transportation requirements, is easier to operate, reduces the space occupied outside the jacket, and can adapt to smaller transport ships;

[0019] The temporary clamping base of the present invention can avoid the welding and cutting process, and the whole process of fixing and unloading a single leg can be reduced to less than 30 minutes, and the assembly and disassembly efficiency can be increased by more than 5 times. For the transportation of large-volume jackets, the loading and unloading time can be greatly reduced, and the risk of long-term lifting at sea can be reduced; in addition, frequent welding and cutting processes will damage the deck of the transport ship to a certain extent, and the cost of replacing the deck in the later stage is also high;

[0020] The present invention adopts a temporary deck clamping base to fix the plug legs, and then uses turnbuckle bolts to connect and tighten the supporting frame to constrain the vertical displacement of the plug legs, thereby ensuring the stability of the conductor frame transportation; compared with traditional cable constraints, the present invention is simple to operate, does not require a large range of cable pulling, avoids the use of heavy equipment, and further reduces damage to the conductor frame's anti-corrosion coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure for roll-on / roll-off transportation and temporary fixation of a jacket in an embodiment of the present invention;

[0023] Figure 2 The exploded schematic diagram of the present invention highlights the fastening support frame of the conductor frame plug leg;

[0024] Figure 3 for Figure 1 Schematic diagram of top view;

[0025] Figure 4 A schematic diagram of the roll-on / roll-off transportation process of the jacket of the present invention;

[0026] Figure 5A schematic diagram of the temporary clamping base structure showing the inserted legs in the present invention;

[0027] Figure 6 for Figure 5 Partial top view of the temporary clamping base structure.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1. Conductor leg; 101. Conductor leg flange support; 102. Leg grouting section; 103. Leg end; 4. Conductor leg fastening support frame; 41. First clamp; 411. First upper semicircular iron ring; 412. First lower semicircular iron ring; 413. Vertical rod; 42. Second clamp; 421. Second upper semicircular iron ring; 422. Second lower semicircular iron ring; 5. Support platform; 7. Reinforcement rod; 9. Temporary deck clamping base; 91. Fixed frame; 92. Clamping frame; 93. Pressure plate; 94. Pressure spring; 95. Arc pressure plate; 96. Fixing bolt; 11. Module trolley; 12. Conductor; 13. Through hole. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figure 1-6 The present invention provides a technical solution: a roll-on / roll-off transport device for a conductor frame 12, comprising a conductor frame leg fastening support frame 4, a deck temporary clamping base 9, a module car and a temporary clamping base, wherein the deck temporary clamping base 9 is connected to the deck by welding or bolts to form a whole, and the deck temporary clamping base 9 is a semi-permanent device, the conductor frame leg fastening support frame 4 is composed of a detachable first clamp 41 and a second clamp 42, which are convenient for disassembly, and the module car is connected to the second clamp 42, and a fixing area for fixing the conductor frame leg 1 is provided in the middle of the first clamp 41 and the second clamp 42, wherein a gap of about 5 mm is reserved between the first clamp 41 and the second clamp 42, so that the first clamp 41 and the second clamp 42 can apply sufficient fastening force by locking the conductor frame 12 pins through bolts;

[0032] The deck temporary clamping base 9 is composed of a fixed frame 91, a clamping frame 92, a hydraulic cylinder, and an arc-shaped pressure plate 959-6. The conductor frame leg fastening support frame 4 and the deck temporary clamping base 9 are fastened and connected using turnbuckle bolts.

[0033] Specifically, the first hoop 41 is composed of a first upper semicircular iron ring 411, a first lower semicircular iron ring 412, and a vertical rod 413 for connecting the first upper semicircular iron ring 411 and the first lower semicircular iron ring 412. The second hoop 42 is composed of a second upper semicircular iron ring 421, a second lower semicircular iron ring 422, and a vertical rod 413 for connecting the second upper semicircular iron ring 421 and the second lower semicircular iron ring 422. The second lower semicircular iron ring 422 is connected to the support platform 5, and the module car is connected to the support platform 5. It should be noted that the pre-tightening force of all the bolts of the lower layer of the first clamp 41 and the second clamp 42 must reach P or above, P=GL / nh, where G is the weight of the entire catheter frame 12, L represents the horizontal distance from the lifting point of the module trolley 11 to the center of the plug leg, n represents the number of catheter frame plug legs 1, and h represents the height difference between the upper and lower clamps, wherein the upper and lower semicircular iron rings of the first clamp 41 and the second clamp 42 are respectively used to fix the catheter frame plug leg 1 flange support of the catheter frame plug leg 1 and the plug leg end 103 (see Figure 2 ).

[0034] Specifically, a reinforcing rod 7 is connected between the second upper semicircular iron ring 421 and the supporting platform 5 , and a plurality of groups of the reinforcing rods 7 are provided to increase the strength between the second clamp 42 and the supporting platform 5 .

[0035] Specifically, multiple groups of through holes 13 are provided on the outer walls of both sides of the fixing frame 91, multiple groups of matching holes are provided on the clamping frame 92, and fixing bolts 96 are provided on the fixing frame 91 for passing through the through holes 13 and the matching holes to fix the fixing frame 91 and the clamping frame 92, wherein the hole spacing of the through holes 13 on the fixing frame 91 is D, and the matching holes on the clamping frame 92 are oblong holes, and the length of the oblong holes needs to meet D / 2+d (d is the diameter of the fixing screw) to achieve the clamping frame 9 2 is fully movable and fixed in the fixed frame 91, the hydraulic cylinder is fixed on the clamping frame 92, the output end of the hydraulic cylinder is connected to the arc pressure plate 95, a pressure plate 93 is slidably provided on the clamping frame 92, and a pressure spring 94 is connected between the arc pressure plate 95 and the pressure plate 93. The deck temporary clamping base 9 is composed of the fixed frame 91, the clamping frame 92, the fixed screw, the hydraulic cylinder, the pressure plate 93, the pressure spring 94, and the arc pressure plate 95. The base 9 is arranged on the deck of the transport ship. The arrangement positions of multiple jackets 12 need to be determined in advance, and a temporary clamping base is arranged under the column legs of each jacket 12. The fixed frame 91 of the clamping base can be fixed to the deck of the transport ship by welding or bolting, and there is no need to repeatedly disassemble in the operation of rolling transport of jackets 12 in large quantities. In addition, it should be noted that when the module trolley 11 transports the jacket 12 to the top of the clamping frame 92, one side of the clamping frame 92 can be against the plug leg end 103, and then the hydraulic cylinder is retracted to expand the internal space of the pressure plate 93. Then the module trolley 11 is unloaded and the plug leg is lowered. After the plug leg is fully in place, the fixing screw is first tightened to ensure that the clamping base is fixed, and then the hydraulic cylinder is used to push the pressure plate 93. The arc-shaped pressure plate 93 slowly presses the end of the plug leg. Finally, the hydraulic cylinder applies a pressure reaching aG (a is the maximum acceleration during the ship's travel), so that the pressure spring 94 is in a reliable compression state.

[0036] A method for using a roll-on / roll-off transport device for a jacket 12 comprises the following steps:

[0037] Step 1: First, install the catheter frame leg fastening support frame 4 at the catheter frame leg 1, place the support plate of the catheter frame leg 1 fastening support frame toward the inside of the catheter frame 12, and then fasten the first clamp 41 and the second clamp 42 as a whole with bolts;

[0038] Step 2: The transport trolley is in place at each leg, and the trolley synchronously lifts the supporting platform. After the trolley is lifted to a predetermined height, the module trolley 11 transports the jacket 12 to the deck. After the jacket 12 reaches the designated position, each leg end 103 of the jacket 12 is placed in a temporary clamping base respectively;

[0039] Step 3: After adjusting the position of the plug leg, pressurize and clamp the end of the plug leg to ensure that the catheter frame 12 is reliably constrained on the horizontal plane;

[0040] Step 4: Use marine turnbuckle bolts 10 to tension and connect the outer side of the catheter frame leg fastening support frame 4 and the outer side fixing point of the temporary clamping base into a whole, so as to ensure reliable vertical constraint of the catheter frame 12.

[0041] A specific application example of this embodiment is:

[0042] When the device is in use, first install the catheter frame leg fastening support frame 4 at the catheter frame leg 1. During installation, the catheter frame leg 1 flange support, leg grouting section 102, and leg end 103 are positioned and installed. The support plate of the catheter frame leg fastening support frame 4 is placed toward the inside of the catheter frame 12, and then the first clamp 41 and the second clamp 42 are integrally fastened and connected by bolts. The upper and lower parts of the catheter frame leg 1 fastening support frame are both connected by bolts. In addition, a gap of about 5 mm is ensured between the first clamp 41 and the second clamp 42 to apply sufficient fastening force. After the fastening force reaches the design value, the trolley module at each leg is in place, and the trolley module synchronously lifts the support platform. After lifting to a predetermined height, the module trolley 11 transports the catheter frame 12 to the deck. After the conductor frame 12 reaches the specified position, each leg end 103 of the conductor frame 12 is placed in the temporary clamping base respectively. After adjusting the leg position, the leg end is pressurized and clamped to ensure that the conductor frame 12 is reliably constrained on the horizontal plane. Finally, the outer side of the conductor frame leg fixed support frame 4 and the outer side of the temporary clamping base are tightened, and the marine turnbuckle bolts are used to tension and connect them into a whole to ensure that the conductor frame 12 is reliably constrained in the vertical direction.

[0043] After the end of the plug leg is completely inserted into the temporary clamping base 9 of the deck, the position of the clamping frame 92 is moved to ensure that the clamping frame 92 of the pipe frame plug leg 1 is in close contact with the plug leg, and then the clamping frame 92 is fixed at any position on the fixing frame 91 and connected through with the fixing bolts 96.

[0044] The hydraulic cylinder drives the pressure plate 93, the pressure spring 94 and the arc pressure plate 95 to squeeze the end of the plug leg together. The hydraulic cylinder adopts a symmetrical arrangement to push and unload synchronously. The end of the pressure plate 93 is embedded in the side wall track of the clamping frame 92 to keep the pressure plate 93 centered. Finally, the pressure applied by the hydraulic cylinder reaches aG (a is the maximum acceleration of the ship during travel), so that the pressure spring 94 is in a reliable compression state.

[0045] The fastening support frame, the outer side and the outer fixing point of the temporary clamping base are tensioned and connected as a whole using marine turnbuckle bolts to ensure reliable vertical constraint of the jacket 12. The fastening support frame, the outer side and the outer fixing point of the temporary clamping base can be a welded anchor block or a bolt pull ring. Both ends of the turnbuckle bolts must be used with steel cables.

[0046] The disassembly process of the device is opposite to the installation process. The unloading process of the conductor frame 12 is as follows: remove the turnbuckle bolts to release the vertical constraint between the fastening support frame and the temporary clamping base; the hydraulic cylinder is depressurized and retracted, and the pressure spring 94 is in a relaxed state to pull out the conductor frame plug leg 1.

[0047] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

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

Claims

1. A method for transporting a jacket on a roll-on / roll-off basis, characterized in that: It comprises a conductor frame leg fastening support frame (4), a deck temporary clamping base (9) and a module vehicle, wherein the conductor frame leg fastening support frame (4) is composed of a detachable first clamping hoop (41) and a second clamping hoop (42), the module vehicle is connected to the second clamping hoop (42), and a fixing area for fixing the conductor frame leg (1) is provided in the middle of the first clamping hoop (41) and the second clamping hoop (42); The deck temporary clamping base (9) is composed of a fixed frame (91), a clamping frame (92), a hydraulic cylinder, and an arc-shaped pressure plate (95); the jacket leg fastening support frame (4) and the deck temporary clamping base (9) are fastened and connected using turnbuckle bolts; The first holding hoop (41) is composed of a first upper semicircular iron ring (411), a first lower semicircular iron ring (412), and a vertical rod (413) for connecting the first upper semicircular iron ring (411) and the first lower semicircular iron ring (412); the second holding hoop (42) is composed of a second upper semicircular iron ring (421), a second lower semicircular iron ring (422), and a vertical rod (413) for connecting the second upper semicircular iron ring (421) and the second lower semicircular iron ring (422); the second lower semicircular iron ring (422) is connected to a support platform (5), and the module vehicle is connected to the lower part of the support platform (5); A reinforcing rod (7) is connected between the second upper semicircular iron ring (421) and the supporting platform (5); The fixed frame (91) is provided with a plurality of through holes (13) on the outer walls on both sides, the clamping frame (92) is provided with a plurality of paired holes, the fixed frame (91) is provided with fixing bolts (96) for passing through the through holes (13) and the paired holes to fix the fixed frame (91) and the clamping frame (92), the hydraulic cylinder is fixed on the clamping frame (92), and the output end of the hydraulic cylinder is connected to the arc-shaped pressure plate (95); A pressure plate (93) is slidably provided on the clamping frame (92), and a pressure spring (94) is connected between the arc-shaped pressure plate (95) and the pressure plate (93); The method for using the jacket roll-on / roll-off transport device comprises the following steps: Step 1: firstly, install the catheter frame plug leg (1) fastening support frame at the catheter frame plug leg (1), place the fastening support frame support plate toward the inside of the catheter frame (12), and then fasten the first clamp (41) and the second clamp (42) as a whole by bolts (8); Step 2: Each leg-jointing position is transported by a trolley, and the trolley synchronously lifts the supporting platform. After the trolley is lifted to a predetermined height, the module trolley (11) transports the jacket (12) to the deck. After the jacket (12) reaches the designated position, each leg-jointing end (103) of the jacket (12) is placed in a corresponding temporary clamping base (9) on the deck. Step 3: After adjusting the position of the plug leg, the end of the plug leg is clamped under pressure to ensure that the catheter frame (12) is reliably constrained on the horizontal plane; Step 4: Use marine turnbuckle bolts to tension and connect the outer side of the conductor frame leg fastening support frame (4) and the outer side fixing point of the deck temporary clamping base (9) into a whole, so as to ensure that the conductor frame (12) is reliably restrained in the vertical direction.

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