Overturning type lifting appliance for offshore operation

Abstract

The utility model discloses a turnover type lifting appliance for offshore operation. The turnover type lifting appliance comprises a movable pile embracing assembly, a turnover transmission assembly and a lifting assembly, the movable pile embracing assembly is hinged to the offshore operation platform. The overturning transmission assembly comprises a jacking oil cylinder and a horizontal sliding base, one end of the jacking oil cylinder is hinged to one side of the movable pile embracing assembly, and the other end of the jacking oil cylinder is hinged to the horizontal sliding base. The lifting assembly comprises a lifting appliance mounting frame, a pulley piece and a steel wire rope; the lifting appliance installation frame is installed at the movable end of the movable pile embracing assembly, the pulley piece is installed on the lifting appliance installation frame, the steel wire rope is wound around the pulley piece, and the operation tool is detachably installed on the steel wire rope. According to the overturning type lifting appliance, the pile legs can be overturned to be in the vertical state from the horizontal state under the condition that a lifting machine is not used, the stability is high in the overturning process, and accurate assembly and alignment between the pile legs are facilitated. In addition, the device is provided with a hoisting assembly used for hoisting an operation tool, and further maintenance and reinforcement operation can be conducted on the pile leg.

Description

Technical Field

[0001] The utility model relates to the technical field of ocean engineering construction, in particular to a flip-type sling for offshore operations. Background Art

[0002] In an ocean engineering platform, the function of a pile leg is to support the ocean engineering platform. With the development of ocean engineering towards deeper waters, during the use of the pile leg, it may be found that the original pile leg can no longer meet the depth requirements of the ocean, and a longer pile leg needs to be replaced. Before installing the pile leg, the pile leg is usually in a lying state and needs to be flipped from a horizontal state to a vertical state and then aligned for installation. During the flipping process of the existing pile leg, a hoisting machine is usually required for cooperation. Specifically, one end of the pile leg is fixed by the hoisting machine, and the other end is limited by a pile column holder. Refer to the pile column erection and holding system in European Patent EP4034712A1. The two cooperate to complete the hoisting, flipping, and vertical positioning of the tower barrel.

[0003] However, the above-mentioned flipping device still has the following problems: The hoisting machine located on the offshore operation platform has been working at high altitude. Affected by continuous waves and wind, it is difficult to meet the requirements of high-precision assembly, and the work efficiency is low. In addition, the pile column holder holds the bottom end of the pile leg, and the overall height of the pile leg is high. During the flipping process of the pile leg, its working center of gravity gradually rises, which is not conducive to the assembly alignment between the pile legs. The assembly alignment difficulty will increase sharply, resulting in a decrease in the assembly efficiency of the offshore pile legs and also increasing the construction cost to a certain extent. In addition, the existing flipping device has a single function and cannot perform further operations such as maintenance and reinforcement on the pile legs. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a flip-type sling for offshore operations.

[0005] The purpose of the utility model is achieved by the following technical solution: A flip-type sling for offshore operations, characterized in that it includes a movable pile-holding assembly for placing the pile leg, a flipping transmission assembly for flipping the movable pile-holding assembly from a horizontal state to a vertical state, and a hoisting assembly for hoisting operation tools.

[0006] One end of the movable pile-holding assembly is a hinged end, and the other end is a movable end. The hinged end of the movable pile-holding assembly is hinged to the offshore operation platform; the flipping drive assembly includes a jacking oil cylinder and a horizontal sliding seat. One end of the jacking oil cylinder is hinged to one side of the movable pile-holding assembly, and the other end is hinged to the horizontal sliding seat. The horizontal sliding seat slides horizontally on the offshore operation platform; after the pile leg is horizontally placed on the movable pile-holding assembly, the jacking oil cylinder jacks up the movable pile-holding assembly upward. At the same time, with the cooperation of the horizontal sliding seat sliding on the offshore operation platform, the pile leg is flipped from the horizontal state to the vertical state; the hoisting assembly includes a spreader mounting frame, a pulley assembly, and a steel wire rope; the spreader mounting frame is installed at the movable end of the movable pile-holding assembly, the pulley assembly is installed on the spreader mounting frame, the steel wire rope is wound around the pulley assembly, and the working tool is detachably installed on the steel wire rope.

[0007] Optionally, a pulley block is provided at the bottom of the horizontal sliding seat, and the horizontal sliding seat is slidably installed on the offshore operation platform through the pulley block.

[0008] Optionally, the movable pile-holding assembly includes a movable pile-holding frame and a hinge seat; the bottom of the movable pile-holding frame is hinged to the hinge seat, and the hinge seat is installed on the periphery of the moon pool of the operation platform.

[0009] Optionally, the movable pile-holding frame is strip-shaped and has a first accommodating groove for accommodating the pile leg. At least one first guiding groove is provided in the first accommodating groove, and a plurality of bearing groups for reducing sliding friction are embedded in the first guiding groove.

[0010] Optionally, the offshore operation flipping spreader further includes a fixed pile-holding assembly provided on the other side of the movable pile-holding assembly, and the movable pile-holding assembly and the fixed pile-holding assembly are mutually clamped to hold the pile leg tightly.

[0011] Optionally, the fixed pile-holding assembly includes a fixed pile-holding frame and a fixed seat; the bottom end of the fixed pile-holding frame is fixed to the fixed seat, and the fixed seat is installed on the periphery of the moon pool of the operation platform.

[0012] Optionally, the fixed pile-holding frame is strip-shaped and has a second accommodating groove for accommodating the pile leg. At least one second guiding groove is provided in the second accommodating groove, and a plurality of bearing groups for reducing sliding friction are embedded in the second guiding groove.

[0013] Optionally, the length of the fixed pile-holding frame is less than the length of the movable pile-holding frame.

[0014] Optionally, the working tool is a fixing tool for fixedly connecting two adjacent sections of leg columns. The fixing tool includes a leg column connection hoop for locking two adjacent leg columns and a top hoop assembly for supporting the leg column connection hoop on the inner wall of the leg column. The leg column connection hoop includes a connection ring and at least two groups of elastic locking members connected to the outer peripheral edge of the connection ring. The top hoop assembly includes a limit seat for installing the connection ring and a telescopic tightening member for pressing the elastic locking member against the inner wall of the leg column. The connection ring is detachably installed on the limit seat. The telescopic tightening member has a fan-shaped tightening block. The telescopic tightening member is installed on the limit seat. When the telescopic tightening member makes a horizontal stretching movement, it drives the fan-shaped tightening block to outwardly expand the elastic locking member, so that each group of elastic locking members presses against the inner wall of the connection position of two adjacent sections of leg columns.

[0015] Optionally, the top hoop assembly further includes a hoisting structure arranged on the limit seat for cooperating and connecting with the steel wire rope.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. By designing a flip-type sling, the present application can flip the leg column from a horizontal state to a vertical state without using a hoisting machine. During the flipping process, the stability is high, which is conducive to the precise assembly and alignment between leg columns, improves the assembly and placement efficiency of leg columns, and reduces the construction difficulty and cost. In addition, the device is provided with a hoisting assembly for hoisting the working tool, which can further maintain and reinforce the leg column.

[0018] 2. By designing the structures of the movable pile-holding assembly and the fixed pile-holding assembly, the present application improves the flipping stability of the leg column and facilitates the rapid and precise positioning with the lower-section leg column after flipping, which can improve the rapid positioning between the leg column connection hoop and the two adjacent leg columns in the later stage. Specifically, by designing the first accommodation groove, it is convenient to horizontally position the leg column, thereby improving the flipping stability of the leg column. Secondly, the first guiding groove / second guiding groove is respectively designed in the movable pile-holding assembly and the fixed pile-holding assembly, which corresponds to the number and position of the limiting strips on the outer wall of the leg column one by one. The two cooperate to avoid installation and slide relative to each other, so that during the flipping process of the leg column, the leg column can gradually slide along the preset movement track under the guiding action of the guiding grooves in the movable pile-holding assembly and the fixed pile-holding assembly, which is beneficial to the precise alignment between the upper-section leg column and the lower-section leg column, realizes rapid installation, and improves the installation efficiency and installation quality. In addition, the design of the bearing group can also protect the limiting strips, especially during the flipping process, reduce the sliding friction between the limiting strips and the movable pile-holding frame / fixed pile-holding frame, and avoid the deformation or wear of the limiting strips.

[0019] 3. By arranging a pulley block, the pulley block cooperates with the jacking oil cylinder, which can improve the smoothness of the flipping process, thereby improving the stability of the flipping process.

[0020] 4. By designing the pile-holding frames with different lengths, on the one hand, it is convenient for the disassembly and installation of the working tools and the hoisting components. On the other hand, it can also serve as the access passage for the operators during the maintenance and reinforcement construction of the pile legs in the later stage, facilitating the subsequent maintenance operations.

[0021] 5. The fixing tooling of the present application is a kind of reinforcement tooling. Specifically, by designing the built-in pile leg connection hoop, the adjacent two ends of the pile legs are fixedly connected to each other, or internal reinforcement is carried out on the pile legs that have been used for a long time. During installation, the pile leg connection hoop is hoisted from inside the pile leg to the required position. The pile leg connection structure between the two pile legs is expanded and opened by using a top hoop assembly such as a horizontally telescopic hydraulic jacking device, and then connected by fasteners to achieve stable connection of the pile legs, reducing the welding workload and difficulty during the pile leg extension process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a flip-type lifting device for offshore operations according to a preferred embodiment of the present utility model;

[0023] Figure 2 is a disassembled schematic diagram of a flip-type lifting device for offshore operations according to a preferred embodiment of the present utility model;

[0024] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0025] Figure 4 is Figure 2 [[ID=2,7]]an enlarged schematic diagram of part B in

[0026] Figure 5 is Figure 4 an enlarged schematic diagram of part C in

[0027] Figure 6 is a schematic structural diagram of the fixing tooling according to a preferred embodiment of the present utility model;

[0028] Figure 7 is a schematic structural diagram of the fixed pile-holding component according to a preferred embodiment of the present utility model;

[0029] In the figure:

[0030] 100. Flip-type lifting device for offshore operations;

[0031] 1. Movable pile-holding component; 11. Movable pile-holding frame; 111. First accommodating groove; 112. First guiding groove; 113. Bearing group; 12. Hinge seat;

[0032] 2. Flip drive component; 21. Jacking oil cylinder; २२. Horizontal sliding seat; 221. Pulley group;

[0033] 3. Lifting assembly; 31. Hoist mounting frame; 32. Pulley assembly; 33. Steel wire rope;

[0034] 4. Fixed pile clamping assembly; 41. Fixed pile clamping frame; 411. Second accommodation groove; 412. Second guide groove; 413. Bearing group; 42. Fixed seat;

[0035] 5. Fixed tooling; 51. Leg connection hoop; 511. Connection ring; 512. Elastic locking member; 52. Top hoop assembly; 521. Limit seat; 522. Telescopic tightening member; 53. Lifting structure;

[0036] 200. Leg; 201. Limit strip. Detailed implementation mode

[0037] Next, in combination with the accompanying drawings and the specific implementation mode, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0038] As Figure 1-7 shown, a flip-type hoist 100 for offshore operations includes a movable pile clamping assembly 1 for placing a leg 200, a flip drive assembly 2 for flipping the movable pile clamping assembly 1 from a horizontal state to a vertical state, and a lifting assembly 3 for hoisting operation tools;

[0039] One end of the movable pile clamping assembly 1 is a hinged end, and the other end is a movable end. The hinged end of the movable pile clamping assembly 1 is hinged on an offshore operation platform (not shown in the figure); the flip drive assembly 2 includes a jacking oil cylinder 21 and a horizontal sliding seat 22. One end of the jacking oil cylinder 21 is hinged on one side of the movable pile clamping assembly 1, and the other end is hinged on the horizontal sliding seat 22. The horizontal sliding seat 22 slides horizontally on the offshore operation platform; after the leg 200 is horizontally placed on the movable pile clamping assembly 1, the jacking oil cylinder 21 jacks up the movable pile clamping assembly 1 upward, and at the same time, the horizontal sliding seat 22 slides on the offshore operation platform to cooperate, and the leg 200 is flipped from a horizontal state to a vertical state; the lifting assembly 3 includes a hoist mounting frame 31, a pulley assembly 32, and a steel wire rope 33; the hoist mounting frame 31 is installed at the movable end of the movable pile clamping assembly 1, the pulley assembly 32 is installed on the hoist mounting frame 31, the steel wire rope 33 is wound around the pulley assembly 32, and the operation tool is detachably installed on the steel wire rope 33.

[0040] In this application, by designing a flip-type spreader, the leg 200 can be flipped from a horizontal state to a vertical state without using a hoisting machine. During the flipping process, the stability is high, which is conducive to the precise assembly and alignment between the legs 200, improving the assembly and placement efficiency of the legs 200 and reducing the construction difficulty and cost. In addition, this device is provided with a hoisting assembly 3 for hoisting working tools, which can perform further maintenance and reinforcement operations on the legs 200.

[0041] As a further preferred solution, a pulley block 221 is provided at the bottom of the horizontal sliding seat 22, and the horizontal sliding seat 22 is slidably mounted on the offshore operation platform through the pulley block 221.

[0042] In this application, by providing the pulley block 221, which cooperates with the jacking oil cylinder 21, the smoothness of the flipping process can be improved, thereby enhancing the stability of the flipping process.

[0043] As a further preferred solution, the movable pile-holding assembly 1 includes a movable pile-holding frame 11 and a hinge seat 12; the bottom of the movable pile-holding frame 11 is hinged to the hinge seat 12, and the hinge seat 12 is installed on the periphery of the moonpool of the operation platform.

[0044] As a further preferred solution, the movable pile-holding frame 11 is strip-shaped and has a first accommodation groove 111 for accommodating the leg 200. At least one first guide groove 112 is provided in the first accommodation groove 111, and a plurality of bearing groups 113 for reducing sliding friction are embedded in the first guide groove 112.

[0045] As a further preferred solution, the offshore operation flip-type spreader 100 further includes a fixed pile-holding assembly 4 provided on the other side of the movable pile-holding assembly 1, and the movable pile-holding assembly 1 and the fixed pile-holding assembly 4 are mutually clamped to hold the leg 200 tightly.

[0046] As a further preferred solution, the fixed pile-holding assembly 4 includes a fixed pile-holding frame 41 and a fixed seat 42; the bottom end of the fixed pile-holding frame 41 is fixed to the fixed seat 42, and the fixed seat 42 is installed on the periphery of the moonpool of the operation platform.

[0047] As a further preferred solution, the fixed pile-holding frame 41 is strip-shaped and has a second accommodation groove 411 for accommodating the leg 200. At least one second guide groove 412 is provided in the second accommodation groove 411, and a plurality of bearing groups 413 for reducing sliding friction are embedded in the second guide groove 412.

[0048] By designing the structures of the movable pile-holding assembly 1 and the fixed pile-holding assembly 4, the present application improves the turning stability of the pile leg 200 and facilitates the quick and accurate positioning with the lower-section pile leg 200 after turning, which can improve the quick positioning between the pile leg connection hoop and the adjacent two pile legs 200 in the later stage. Specifically, by designing the first accommodating groove 111, it is convenient to horizontally position the pile leg 200, thereby improving the turning stability of the pile leg 200. Secondly, the first guiding groove 112 / the second guiding groove 412 are respectively designed in the movable pile-holding assembly 1 and the fixed pile-holding assembly 4, corresponding to the number and position of the limiting strips 201 on the outer wall of the pile leg 200 one by one. The two cooperate for avoidance installation and mutual sliding, so that during the turning process of the pile leg 200, the pile leg 200 can gradually slide along the preset moving track under the guiding action of the guiding grooves on the movable pile-holding assembly 1 and the fixed pile-holding assembly 4. This is conducive to the accurate alignment between the upper-section pile leg 200 and the lower-section pile leg 200, realizing quick installation and improving the installation efficiency and quality. In addition, the design of the bearing group can also protect the limiting strip 201, especially during the turning process, reducing the sliding friction between the limiting strip 201 and the movable pile-holding frame 11 / the fixed pile-holding frame 41, and avoiding deformation or wear of the limiting strip 201.

[0049] As a further preferred solution, the length of the fixed pile-holding frame 41 is less than the length of the movable pile-holding frame 11. By designing pile-holding frames with different lengths, on the one hand, it is convenient for the disassembly and installation of the working tools and the hoisting assembly 3, and on the other hand, it can also serve as the access passage for operators during the maintenance and reinforcement construction of the pile leg 200 in the later stage, facilitating subsequent maintenance operations.

[0050] As a further preferred solution, the working tool is a fixing tool 5 for fixedly connecting adjacent two sections of pile legs. The fixing tool 5 includes a pile leg connection hoop 51 for locking adjacent two pile legs 200 and a top hoop assembly 52 for supporting the pile leg connection hoop 51 on the inner wall of the pile leg 200. The pile leg connection hoop 51 includes a connection ring 511 and at least two groups of elastic locking members 512 connected to the outer peripheral edge of the connection ring 511. The top hoop assembly 52 includes a limit seat 521 for installing the connection ring 511 and a telescopic tightening member 522 for pressing the elastic locking member 512 against the inner wall of the pile leg 200. The connection ring 511 is detachably installed on the limit seat 521. The telescopic tightening member 522 has a fan-shaped tightening block. The telescopic tightening member 522 is installed on the limit seat 521. When the telescopic tightening member 522 makes a horizontal stretching movement, it drives the fan-shaped tightening block to expand the elastic locking member 512 outwards, so that each group of elastic locking members 512 presses against the inner wall of the connection position of the adjacent two sections of pile legs 200.

[0051] The fixing fixture 5 of the present application is a type of reinforcement fixture. Specifically, it is designed to securely connect the adjacent two ends of the pile legs 200 to each other through the design of a built-in pile leg connection hoop 51, or to provide internal reinforcement on a pile leg 200 that has been in use for a long time. During installation, the pile leg connection hoop 51 is hoisted from the inside of the pile leg 200 to the desired position. A top hoop assembly 52, such as a horizontally retractable hydraulic jacking device, is used to expand the pile leg connection structure between the two sections of the pile legs 200. The pile legs 200 are then connected using fasteners to achieve a stable connection between the pile legs 200, reducing the welding workload and difficulty during the extension process of the pile legs 200.

[0052] As a further preferred solution, the top hoop assembly 52 further includes a hoisting structure 53 provided on the limiting seat 521 for cooperating with and connecting to the steel wire rope 33 .

[0053] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A flip-type sling for offshore operations, characterized in that, It includes a movable pile-holding component for placing the pile leg, a flipping transmission component for flipping the movable pile-holding component from a horizontal state to a vertical state, and a hoisting component for hoisting operation tools. One end of the movable pile-holding component is a hinged end, and the other end is a movable end. The hinged end of the movable pile-holding component is hinged on the offshore operation platform. The flipping transmission component includes a jacking oil cylinder and a horizontal sliding seat. One end of the jacking oil cylinder is hinged on one side of the movable pile-holding component, and the other end is hinged on the horizontal sliding seat. The horizontal sliding seat slides horizontally on the offshore operation platform. After the pile leg is horizontally placed on the movable pile-holding component, the jacking oil cylinder jacks up the movable pile-holding component upward. At the same time, with the cooperation of the horizontal sliding seat sliding on the offshore operation platform, the pile leg is flipped from a horizontal state to a vertical state. The hoisting component includes a spreader mounting frame, a pulley assembly, and a steel wire rope. The spreader mounting frame is installed at the movable end of the movable pile-holding component. The pulley assembly is installed on the spreader mounting frame. The steel wire rope is wound around the pulley assembly. The operation tool is detachably installed on the steel wire rope.

2. The flip-type sling for offshore operations according to claim 1, characterized in that, The bottom of the horizontal sliding seat is provided with a pulley group, and the horizontal sliding seat is slidably installed on the offshore operation platform through the pulley group.

3. The flip-type sling for offshore operations according to claim 1, wherein, The movable pile-holding component includes a movable pile-holding frame and a hinge seat. The bottom of the movable pile-holding frame is hinged on the hinge seat, and the hinge seat is installed on the periphery of the moonpool of the operation platform.

4. The flip-type sling for offshore operations according to claim 3, wherein, The movable pile-holding frame is strip-shaped and has a first accommodating groove for accommodating the pile leg. At least one first guiding groove is provided in the first accommodating groove, and a plurality of bearing groups for reducing sliding friction are embedded in the first guiding groove.

5. The flip-type sling for offshore operations according to claim 3, characterized in that, This offshore operation flipping spreader further includes a fixed pile-holding component arranged on the other side of the movable pile-holding component. The movable pile-holding component and the fixed pile-holding component are mutually clamped to hold the pile leg tightly.

6. The flip-type sling for offshore operations according to claim 5, characterized in that, The fixed pile-holding component includes a fixed pile-holding frame and a fixed seat. The bottom end of the fixed pile-holding frame is fixed on the fixed seat, and the fixed seat is installed on the periphery of the moonpool of the operation platform.

7. The flip-type sling for offshore operations according to claim 6, characterized in that, The fixed pile-holding frame is strip-shaped and has a second accommodating groove for accommodating the pile leg. At least one second guiding groove is provided in the second accommodating groove, and a plurality of bearing groups for reducing sliding friction are embedded in the second guiding groove.

8. The flip-type sling for offshore operations according to claim 7, wherein The length of the fixed pile-holding frame is less than the length of the movable pile-holding frame.

9. The flip-type sling for offshore operations according to claim 1, wherein, The working tool is a fixing tool for fixedly connecting two adjacent sections of leg columns. The fixing tool includes a leg column connection hoop for locking two adjacent leg columns and a top hoop assembly for supporting the leg column connection hoop on the inner wall of the leg column. The leg column connection hoop includes a connection ring and at least two groups of elastic locking pieces connected to the outer peripheral edge of the connection ring. The top hoop assembly includes a limit seat for installing the connection ring and a telescopic tightening piece for pressing the elastic locking piece against the inner wall of the leg column. The connection ring is detachably installed on the limit seat. The telescopic tightening piece has a sector-shaped tightening block. The telescopic tightening piece is installed on the limit seat. When the telescopic tightening piece makes a horizontal stretching movement, it drives the sector-shaped tightening block to expand the elastic locking piece outwards, so that each group of elastic locking pieces presses against the inner wall of the connection position of two adjacent sections of leg columns.

10. The flip-type sling for offshore operations according to claim 9, characterized in that, The top hoop assembly further includes a hoisting structure arranged on the limit seat for cooperating and connecting with the steel wire rope.

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