Detachable hoisting pipe structure based on pile leg bolt hole hoisting and hoisting method
Through the detachable hoisting pipe structure based on pile leg latch holes, the problem of long cutting and polishing of the hoisting ears in high altitude operations is solved, efficient and safe hoisting operations are achieved, and the stability and safety performance of the hoisting are improved.
Patent Information
- Application Number
- CN202411735216.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-04-11
AI Technical Summary
In high-altitude operations, the pile legs have a long cutting and grinding time and need to pass the flaw detection. The working environment is poor and the safety is poor. It is necessary to design a tool to avoid cutting and grinding the lifting ears.
A detachable hoisting pipe structure based on pile leg latch holes is adopted. The hoisting pipe passes through the pin holes of pile leg, and through the tight connection between the first and second side sections and the middle section, the synergistic effect of the baffle plate and the rolling guard ring is used to realize hoisting operation.
Effectively prevent excessive load or rotation problems during lifting, improve the impact resistance and stability of lifting, enhance safety performance, and reduce the risks of high-altitude operations.
Smart Images
Figure CN119797136A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of pipe hanging, and in particular relates to a detachable pipe hanging structure and a hanging method based on hanging of pile leg pin holes. Background Art
[0002] The order cycle for this round of wind power installation vessels and wind power construction and operation mother ships is still continuing. my country's offshore wind power industry technology continues to advance. In the next 2-3 years, the country will need to install 1,500-2,000 wind turbines, and the market prospects are broad. This platform is a 1,200-ton self-elevating wind power platform. The whole ship is equipped with 4 cylindrical pile legs. The pile legs are the main structure of the wind power platform to withstand various complex loads during work. The pile leg cylinder wall is CCS-EH690 with a thickness of 96mm, a minimum yield strength of 690MPa, a tensile strength of 770~940MPa, and a structural design temperature of -10℃.
[0003] After the pile legs are partially installed at the dock, they need to be connected downstream of the Sutong Bridge. The dock has strong winds and waves and fast currents. The connection is done at high altitude, and the cutting and grinding of the lifting lugs takes a long time, and requires qualified flaw detection. The working environment and safety are poor. Therefore, it is necessary to design a tooling that avoids cutting and grinding the lifting lugs in a high altitude environment. Summary of the invention
[0004] In order to solve the above problems, the present invention provides a detachable pipe hanging structure and a hanging method based on the pile leg pin hole hanging.
[0005] The technical solution provided by the present invention is as follows:
[0006] On the one hand, a detachable pipe hanging structure based on pile leg pin hole hanging includes:
[0007] Pile legs, with transverse pin holes on the upper part of the pile legs;
[0008] The hanging pipe comprises a middle section, a first side section and a second side section respectively connected to both sides of the middle section;
[0009] The hanging pipe passes through the pin hole, and the first two side sections and the second two side sections protrude from the outer facade of the pile leg;
[0010] Two first baffles and second baffles are provided at the ends of the first two side sections and the second two side sections. The first baffles are attached to the outer facades of the pile legs, and a gap is left between the first baffles and the second baffles to form a hoisting space.
[0011] In some embodiments, the middle section and the first two side sections and the second two side sections are connected via flanges and bolt groups.
[0012] In some embodiments, a rolled retaining ring is provided between the first baffle and the outer facade of the pile leg, a rolled retaining ring is provided on the side of the second baffle away from the pile leg, and the rolled retaining ring is connected to the hanging pipe through a bolt group.
[0013] In some embodiments, an outfitting platform is provided inside the pile leg, and the height of the outfitting platform is lower than the height of the pin hole.
[0014] In some embodiments, a scaffold is connected to the outer facade of the pile leg, and the height of the scaffold is lower than the height of the pin hole.
[0015] In some embodiments, the outfitting platform includes a first platform and a support leg disposed at the bottom of the platform, and the other end of the support leg is fixed to the inner surface of the pile leg.
[0016] In some embodiments, the scaffold includes a mounting frame, and a second platform pivotally connected to the mounting frame.
[0017] On the other hand, a detachable pipe hanging method based on the pile leg pin hole hanging is applied to the above-mentioned detachable pipe hanging structure based on the pile leg pin hole hanging, comprising the following steps:
[0018] S1: Before the pile leg is hoisted, the middle section, the first two side sections, the second two side sections, the rolled retainer, the first baffle, the second baffle and the bolt assembly are sent to the outfitting platform inside the pile leg;
[0019] S2: insert the first two side sections and the second two side sections into their respective pin holes, and leave a gap, pull up the middle section with a hand chain hoist, splice it with the first two side sections and the second two side sections, and fix it with a bolt assembly;
[0020] S3: Install the first baffle, the second baffle and the rolled retaining ring on the outside of the pile leg through the scaffolding and fix them with bolt groups;
[0021] S4: During hoisting, the wire rope loop is placed in the limited space formed by the first baffle and the second baffle for hoisting;
[0022] S5: After lifting, remove each bolt group to complete the disassembly.
[0023] In summary, the beneficial effects of the present invention are:
[0024] (1) The hanging pipe of the present invention is fixed through the pin hole of the pile leg. The pin hole serves as a precise guide and load-bearing component, which can effectively prevent the occurrence of eccentric load or rotation problems during the lifting process. At the same time, the modular design of the hanging pipe structure realizes uniform load distribution through the close connection between the middle section and the two side sections, further improving the overall impact resistance and stability of the lifting.
[0025] (2) The synergistic effect of the first baffle, the second baffle and the rolled guard ring of the present invention provides multiple protections for the lifting operation. The baffle design effectively prevents the lifting pipe from rotating or the rope from slipping, and the rolled guard ring protects the pile legs and the surface of the lifting pipe by absorbing the impact force, which significantly improves the safety performance of the device. At the same time, the addition of scaffolding and outfitting platforms provides operators with a stable and reliable operating platform, greatly reducing the risks of high-altitude operations.
[0026] (3) The present invention provides an outfitting platform inside the pile leg, and the operator can complete the installation of the hanging pipe inside the pile leg, avoiding all high-altitude operations such as welding, cutting, grinding, and flaw detection, providing a stable and reliable operating platform for the operators, and greatly reducing the risks of high-altitude operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the top view structure of the present invention;
[0028] Figure 2 It is a side view structural schematic diagram of the present invention;
[0029] Figure 3 It is a schematic diagram of the hanging pipe structure of the present invention.
[0030] The reference numerals are as follows:
[0031] 1. Pile leg; 2. Pin hole; 3. Outfitting platform; 4. Scaffolding; 5. Middle section; 6. First two side sections; 7. Second two side sections; 8. Rolled retainer; 9. First baffle; 10. Second baffle; 11. Flange; 12. Bolt group;
[0032] 31. First platform; 32. Support legs; 41. Mounting frame; 42. Second platform. DETAILED DESCRIPTION
[0033] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The following examples are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.
[0034] Example 1
[0035] like Figure 1-3As shown, the detachable pipe hanging structure based on the pile leg pin hole hoisting proposed by the present invention adopts a modular design, and through the close cooperation of various components, efficient and safe hoisting operations are achieved. The entire structure is centered on the pile leg, and the hanging pipe passes through the pin hole on the upper part of the pile leg, and a stable connection and safe operation are achieved through a series of functional components. The pile leg 1 is the main load-bearing component of the hoisting structure, and a transverse pin hole 2 is opened on the upper part thereof for fixing the middle section 5 of the hanging pipe. The transverse design of the pin hole 2 ensures that the installation and disassembly of the hanging pipe are more convenient. At the same time, the inner wall thereof is smoothed to reduce the friction resistance during the insertion of the hanging pipe and avoid surface damage caused by stress concentration. The design of the pin hole 2 enables the hoisting process to adapt to a variety of sizes and load requirements, providing a basic guarantee for the entire system.
[0036] The pipe suspension part is composed of a middle section 5, a first side section 6 and a second side section 7, and adopts a modular design. The middle section 5 is the core load-bearing part of the pipe suspension, which is inserted into the pile leg through the pin hole and bears the main vertical load and horizontal shear force during lifting. In order to enhance the bearing capacity of the middle section, its outer wall is thickened and coated with a high-strength anti-corrosion coating to adapt to the high humidity and high salinity characteristics of the marine environment. The first side section 6 and the second side section 7 are symmetrically connected at both ends of the middle section 5 and fixed by a flange 11 and a bolt group 12. The symmetrically designed side sections not only balance the load distribution, but also form an external lifting space through the extended structure. This design ensures that the pipe suspension can maintain a stable center of gravity during the lifting operation to prevent overturning or shaking due to imbalance.
[0037] The first baffle 9 and the second baffle 10 are arranged at the ends of the first two side sections 6 and the second two side sections 7, wherein the first baffle 9 is close to the outer facade of the pile leg 1 to play a stabilizing support role. By fitting with the surface of the pile leg, the first baffle can effectively limit the rotation or lateral movement of the hanging pipe, thereby improving the overall safety of the hoisting. The second baffle 10 is located at the far end of the two side sections and serves as a limit device during the hoisting operation to prevent the hoisting rope from slipping and provide additional protection when impacted by external wind and waves. The gap between the two baffles forms a hoisting space for the hoisting rope to pass through and be fixed. The reasonable design of the gap not only ensures the stability of the rope, but also facilitates the quick operation of the operator.
[0038] In order to further enhance the durability and stability of the structure, a rolled guard ring 8 is provided between the first baffle plate 9 and the outer surface of the pile leg, and a similar guard ring is also installed at the far end of the second baffle plate 10. The rolled guard ring 8 is made of high-strength alloy material and has excellent impact resistance and corrosion resistance. The guard ring can effectively absorb the impact force during the lifting operation through flexible design to prevent concentrated stress from damaging the surface of the pile leg and the hanging pipe. Through the connection of the bolt group 12, the guard ring can be firmly fixed on the hanging pipe structure, and can also be quickly disassembled when replacement is required, which improves the convenience of maintenance.
[0039] An outfitting platform 3 is also designed inside the pile leg 1 to provide additional operational support for the installation and maintenance of the hanging pipe. The outfitting platform consists of a first platform 31 and a support leg 32. The platform height is slightly lower than the pin hole 2, ensuring that the operator can complete operations such as pin insertion and adjustment under the hanging pipe without interfering with the installation process of the hanging pipe. One end of the support leg 32 is fixed to the inner surface of the pile leg 1, providing reliable support for the outfitting platform 3. The outfitting platform 3 not only provides a safe operating space for operators, but also improves the structural stability inside the pile leg 1.
[0040] In order to meet the needs of external auxiliary operations, the facade of the pile leg is connected with a scaffolding 4. The scaffolding includes a mounting frame 41 and a second platform 42 connected by an axis. The second platform 42 can be folded and adjusted, and the height can be adjusted according to construction needs, which is convenient for storage and transportation. The scaffolding 4 provides a reliable support point for high-altitude operations, especially in windy and wave environments, and its stability further ensures the safety of operators. The design of the scaffolding 4 also takes into account the overall height of the pile leg 1. Its position is lower than the pin hole 2 to avoid conflict with the installation area of the hanging pipe.
[0041] The flange 11 and the bolt group 12 are key components for the modular connection of the hanging pipe. The flange 11 is made of high-strength alloy material and is rust-proofed, so it can be used for a long time in harsh environments without being easily damaged. The bolt group 12 uses high-strength bolts to provide reliable connection performance. In actual operation, through the cooperation of the flange 11 and the bolt group 12, the middle section 5 of the hanging pipe and the first two side sections 6 and the second two side sections 7 can be quickly assembled or disassembled, which significantly improves the construction efficiency. In addition, the flange 11 and the bolt group 12 also provide the possibility of modular expansion of the hanging pipe, and components can be flexibly replaced according to specific needs, thereby enhancing the versatility of the system.
[0042] Example 2
[0043] This embodiment provides a detachable pipe hanging method based on the pile leg pin hole hanging, which is applied to the above-mentioned detachable pipe hanging structure based on the pile leg pin hole hanging, and includes the following steps:
[0044] S1: Before the pile leg 1 is lifted, the middle section 5, the first two side sections 6, the second two side sections 7, the rolled retaining ring 8, the first baffle plate 9, the second baffle plate 10 and the bolt group 12 are placed on the outfitting platform 3 inside the pile leg 1;
[0045] S2: insert the first two side sections 6 and the second two side sections 7 into their respective pin holes 2, and leave a gap, pull up the middle section 5 with a hand chain hoist, splice it with the first two side sections 6 and the second two side sections 7, and fix it with a bolt group 12;
[0046] S3: Install the first baffle 9, the second baffle 10 and the rolled retaining ring 8 on the outside of the pile leg 1 through the scaffolding 4, and fix them with the bolt group 12;
[0047] S4: During hoisting, the wire rope loop is placed in the limited space formed by the first baffle 9 and the second baffle 10 for hoisting;
[0048] S5: After lifting, each bolt group 12 is removed, and the disassembly is completed.
[0049] During the hoisting operation, the crane lifts the pipe to the target height through the hoisting rope. During the operation, the first baffle 9 is close to the outer surface of the pile leg to ensure the stability of the pipe under stress; the second baffle 10 prevents the rope from accidentally sliding through the limiting effect. At the same time, the rolled retaining ring 8 effectively disperses the impact force during hoisting and reduces the stress concentration problem on the surface of the pipe and the pile leg. After the hoisting is completed, the disassembly steps of the pipe are opposite to the installation process. All components can be disassembled one by one according to the modular design, which is convenient for transportation and storage.
[0050] In summary, the detachable pipe-hanging structure based on the pile leg pin hole hoisting of the present invention realizes efficient and safe hoisting operation through the optimized design of each component. The modular design of the pipe-hanging not only improves the convenience of installation and disassembly, but also enables it to flexibly adapt to different hoisting requirements. The coordinated work of each functional component further enhances the stability and reliability of the entire system, enabling it to be used for a long time in complex marine conditions, and has broad application prospects.
[0051] It should be noted that the implementation methods not shown or described in the drawings or the main text of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each element and method are not limited to the various specific structures, shapes or methods mentioned in the embodiments.
[0052] It should also be noted that the directional terms mentioned in the embodiments, such as "up", "down", "front", "back", "left", "right", "inside", "outside", etc., are only for reference to the directions of the drawings and are not intended to limit the scope of protection of this application.
[0053] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.
Claims
1. A detachable pipe hanging structure based on the pile leg pin hole hanging, characterized in that: include: A pile leg (1), wherein a transverse pin hole (2) is formed on the upper portion of the pile leg (1); A hanging pipe, the hanging pipe comprising a middle section (5), a first side section (6) and a second side section (7) respectively connected to both sides of the middle section (5); The hanging pipe passes through the pin hole (2), and the first two side sections (6) and the second two side sections (7) protrude from the outer facade of the pile leg (1); Two first baffles (9) and two second baffles (10) are provided at the ends of the first two side sections (6) and the second two side sections (7); the first baffles (9) are attached to the outer facade of the pile leg (1); and a gap is left between the first baffles (9) and the second baffles (10) to form a hoisting space.
2. The detachable pipe hanging structure based on the pile leg pin hole hanging according to claim 1 is characterized in that: The middle section (5) and the first two side sections (6) and the second two side sections (7) are connected via a flange (11) and a bolt group (12).
3. The detachable pipe hanging structure based on the pile leg pin hole hanging according to claim 2 is characterized in that: A rolled guard ring (8) is provided between the first baffle plate (9) and the outer surface of the pile leg (1), and a rolled guard ring (8) is provided on the side of the second baffle plate (10) away from the pile leg (1), and the rolled guard ring (8) is connected to the hanging pipe via a bolt group (12).
4. The detachable pipe hanging structure based on the pile leg pin hole hanging according to claim 1 is characterized in that: An outfitting platform (3) is provided inside the pile leg (1), and the height of the outfitting platform (3) is lower than the height of the pin hole (2).
5. The detachable pipe hanging structure based on the pile leg pin hole hanging according to claim 4 is characterized in that: The outer facade of the pile leg (1) is connected to a scaffold (4), and the height of the scaffold (4) is lower than the height of the pin hole (2).
6. The detachable pipe hanging structure based on the pile leg pin hole hanging according to claim 4 is characterized in that: The outfitting platform (3) comprises a first platform (31) and a supporting leg (32) arranged at the bottom of the first platform (31), and the other end of the supporting leg (32) is fixed to the inner surface of the pile leg (1).
7. The detachable pipe hanging structure based on the pile leg pin hole hanging according to claim 5 is characterized in that: The scaffold (4) comprises a mounting frame (41) and a second platform (42) pivotally connected to the mounting frame (41).
8. A detachable pipe hanging method based on pile leg pin hole hanging, applied to the detachable pipe hanging structure based on pile leg pin hole hanging according to any one of claims 1 to 7, characterized in that: The steps include: S1: Before the pile leg (1) is lifted, the middle section (5), the first two side sections (6), the second two side sections (7), the rolled retaining ring (8), the first baffle (9), the second baffle (10) and the bolt group (12) are placed on the outfitting platform (3) inside the pile leg (1); S2: insert the first two side sections (6) and the second two side sections (7) into their respective pin holes (2) and leave a gap, use a hand chain hoist to pull up the middle section (5) and splice it with the first two side sections (6) and the second two side sections (7), and fix it with a bolt group (12); S3: installing a first baffle (9), a second baffle (10) and a rolled retaining ring (8) on the outside of the pile leg (1) through a scaffold (4), and fixing them through a bolt group (12); S4: During hoisting, the wire rope loop is placed in the limited space formed by the first baffle (9) and the second baffle (10) for hoisting; S5: After lifting, each bolt group (12) is removed to complete the disassembly.