Hoisting method for hoisting double steel piles

Abstract

The invention discloses a hoisting method for hoisting double steel piles. The hoisting method comprises the following steps: 1) preparing before hoisting and designing a tool; (2) the double steel piles are connected with a hoisting tool; and (3) synchronous hoisting and posture control are conducted, a hoisting tool comprises a top frame, a plurality of cross beams are fixedly arranged on the top frame, a plurality of lifting lugs are arranged on each cross beam, two sets of longitudinal beams are arranged at the positions, at the two ends and the center of each cross beam, of the top frame, and each set of longitudinal beams forms a positioning clamping groove which is provided with a downward opening and matched with the double steel piles. The method has high efficiency and high safety, overall synchronous hoisting of the double steel piles is achieved through the special hoisting tool, compared with single-steel-pile hoisting, the operation time is greatly shortened, and the shipping efficiency is greatly improved; the rigid hoisting tool provides a stable overall structure, relative displacement and collision of the double steel piles in the hoisting process are effectively prevented, and the safety risk is reduced.

Description

Technical Field

[0001] This invention relates to the field of offshore wind power foundation construction technology, specifically to a method for hoisting double steel piles. Background Technology

[0002] As offshore wind power projects develop towards large-scale and deep-water applications, steel pile foundations have been widely used due to their excellent load-bearing capacity and stability. Steel piles, as a key foundation structure, are characterized by their large size, heavy weight, and high center of gravity.

[0003] Currently, in the process of loading and hoisting steel piles onto ships, single-pile hoisting or simple parallel hoisting methods are commonly used, which presents the following problems: 1. Inefficient, the steel pile hoisting operation takes a long time, affecting the overall ship loading schedule; 2. High safety risks: steel piles are prone to swaying and colliding with each other during hoisting, which may damage the pile coating or structure; 3. Poor positioning accuracy and lack of effective synchronous control methods make it difficult to guarantee the relative position and attitude of the steel piles on the transport ship, which brings difficulties to subsequent construction. 4. Insufficient stability: Traditional suspension point designs may not be able to ensure the overall stability of the double steel piles in the air, posing a risk of overturning. Summary of the Invention

[0004] The present invention aims to provide a hoisting method for double steel piles to solve the problems of low hoisting efficiency, high safety risk, poor positioning accuracy of double piles and unstable attitude in the air in the existing technology, so as to realize the safe, efficient and accurate synchronous hoisting and positioning of double steel piles.

[0005] To solve the above-mentioned technical problems, this invention proposes a method for hoisting double steel piles, comprising the following steps: 1) Preparations and tooling design before hoisting: 1.1 Based on the geometric dimensions, weight, and center of gravity of the steel piles, design a special hoisting fixture for double steel piles; 1.2 Conduct a joint inspection of hoisting tools, rigging, shackles, and lifting equipment to ensure that their rated loads meet safety requirements; 2) Connection between the double steel piles and the hoisting equipment: 2.1 Place two steel piles side by side on the ground or on a support frame, maintaining the preset distance between them; 2.2 The lifting fixture is placed across the two steel piles, and the lifting points on the lifting fixture are reliably connected to the lifting lugs on the steel piles by means of wire ropes or slings; 2.3 The levelness of the double steel piles was initially calibrated by adjusting the length of the slings; 3) Synchronous hoisting and attitude control: 3.1 The main hook of the crane is connected to the lifting beam, and the two steel piles are lifted at the same time through the lifting beam to ensure that the two steel piles are lifted off the ground smoothly; 3.2 During the lifting process, the overall posture and levelness of the two steel piles are monitored in real time by measuring instruments. The predetermined posture of the steel piles is maintained by fine-tuning the lifting speed of each lifting point of the crane or by using the adjustment device on the lifting tool. 3.3 The steel piles are controlled manually using traction ropes to prevent them from rotating and swinging in the air and to avoid collisions.

[0006] Furthermore, the hoisting fixture includes a top frame, on which multiple crossbeams are fixedly mounted. Each crossbeam is provided with multiple lifting lugs. Two sets of longitudinal beams are provided on the top frame at both ends and the center of each crossbeam. Each set of longitudinal beams forms a positioning slot that opens downwards and matches the double steel piles.

[0007] Furthermore, the hoisting fixture is a frame structure welded from square steel pipes.

[0008] Furthermore, multiple hoisting tools are used in combination to achieve the hoisting of the double steel piles.

[0009] Compared with the prior art, the advantages of the present invention are as follows: 1. High efficiency: The double steel piles are hoisted synchronously as a whole using specialized hoisting equipment. Compared with hoisting a single pile, the operation time is greatly reduced, significantly improving the efficiency of loading the ship.

[0010] 2. High safety: The rigid hoisting fixtures provide a stable overall structure, effectively preventing relative displacement and collision of the double steel piles during the hoisting process, and reducing safety risks. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the operation process of the double steel pile hoisting method of the present invention. Figure 2 This is a schematic diagram of the double steel pile hoisting fixture structure. Figure 3 for Figure 2 Front view, The attached figures are labeled as follows: Top frame 1, crossbeam 2, lifting lug 3, longitudinal beam 4, positioning slot 5. Detailed Implementation

[0013] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0014] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0015] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0016] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0017] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0018] Please refer to Figures 1 to 3 This invention provides a method for hoisting double steel piles, comprising the following steps: 1) Preparations and tooling design before hoisting: 1.1 Based on the geometric dimensions, weight, and center of gravity of the steel piles, a special lifting fixture for double steel piles is designed. The lifting fixture is a frame structure welded from square steel pipes, with limiting structures at both ends matching the double steel piles, and lifting lugs at the top for connecting lifting equipment to facilitate the lifting and installation of the fixture. Specifically, like Figure 2 and Figure 3The hoisting fixture includes a top frame 1, on which multiple crossbeams 2 are fixedly mounted. Each crossbeam 2 is provided with multiple lifting lugs 3, which form a lifting lug group. The lifting lugs 3 are connected to the lifting beam by slings or wire ropes, and the lifting beam is connected to the hoisting equipment by slings or wire ropes. Two sets of longitudinal beams 4 are provided on the top frame 1 of the fixture, at both ends and the center of each crossbeam 2. Each set of longitudinal beams 4 forms a positioning slot 5 with an opening facing downwards and matching the double steel piles. 1.2 Conduct a joint inspection of hoisting tools, rigging, shackles, and lifting equipment to ensure that their rated loads meet safety requirements; 2) Connection between the double steel piles and the hoisting equipment: 2.1 Place two steel piles side by side on the ground or on a support frame, maintaining the preset distance between them; 2.2 Use a hoisting rig to span across the two steel piles, and reliably connect the lifting points on the hoisting rig to the lifting lugs on the steel piles using wire ropes or slings; 2.3 The levelness of the double steel piles was initially calibrated by adjusting the length of the slings; 3) Synchronous hoisting and attitude control: 3.1 The main hook of the crane is connected to the lifting beam, and the two steel piles are lifted at the same time through the lifting beam to ensure that the two steel piles are lifted off the ground smoothly; 3.2 During the lifting process, the overall posture and levelness of the two steel piles are monitored in real time using measuring instruments. The lifting speed of each lifting point of the crane is fine-tuned to maintain the predetermined posture of the steel piles. The posture is adjusted using auxiliary cables, and the piles are lifted and loaded onto the ship as a whole. During lifting, the crane's main hook passes through the lifting beam, and both steel piles are simultaneously lifted using slings or wire ropes. After the crane is started, the two steel piles are lifted synchronously. During this process, the command personnel coordinate the operation through communication equipment and observe the posture of the steel piles. 3.3 The steel piles are controlled manually using traction ropes to prevent them from rotating and swinging in the air and to avoid collisions.

[0019] In actual hoisting, multiple hoisting tools can be used in combination to achieve stable hoisting of the double steel piles.

[0020] This invention effectively solves many problems in the hoisting of double steel piles by combining an optimized hoisting method with specialized tooling.

[0021] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A method for hoisting double steel piles, characterized by comprising the following steps: 1) Preparations and tooling design before hoisting: 1.1 Based on the geometric dimensions, weight, and center of gravity of the steel piles, design a special hoisting fixture for double steel piles; 1.2 Conduct a joint inspection of hoisting tools, rigging, shackles, and lifting equipment to ensure that their rated loads meet safety requirements; 2) Connection between the double steel piles and the hoisting equipment: 2.1 Place two steel piles side by side on the ground or on a support frame, maintaining the preset distance between them; 2.2 The lifting fixture is placed across the two steel piles, and the lifting points on the lifting fixture are reliably connected to the lifting lugs on the steel piles by means of wire ropes or slings; 2.3 The levelness of the double steel piles was initially calibrated by adjusting the length of the slings; 3) Synchronous hoisting and attitude control: 3.1 The main hook of the crane is connected to the lifting beam, and the two steel piles are lifted at the same time through the lifting beam to ensure that the two steel piles are lifted off the ground smoothly; 3.2 During the lifting process, the overall posture and levelness of the two steel piles are monitored in real time by measuring instruments, and the predetermined posture of the steel piles is maintained by fine-tuning the lifting speed of each lifting point of the crane. 3.3 The steel piles are controlled manually using traction ropes to prevent them from rotating and swinging in the air and to avoid collisions.

2. The hoisting method for double steel piles according to claim 1, characterized in that, The hoisting fixture includes a top frame (1), on which multiple crossbeams (2) are fixedly provided. Multiple lifting lugs (3) are provided on each of the crossbeams (2). Two sets of longitudinal beams (4) are provided on the top frame (1), at both ends and the center of each crossbeam (2). Each set of longitudinal beams (4) forms a positioning slot (5) with an opening facing downwards to match the double steel piles.

3. The hoisting method for double steel piles according to claim 1, characterized in that, The hoisting fixture is a frame structure welded from square steel pipes.

4. The hoisting method for double steel piles according to claim 1, characterized in that, Multiple hoisting tools are used in combination to achieve the hoisting of double steel piles.

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