Lifting lug device for lifting jacket

Abstract

The utility model provides a lifting lug device for lifting a jacket, which comprises the jacket, a plurality of main legs are arranged on the jacket, a plurality of main shafts are arranged on one side of each main leg, an outer lug plate and an inner lug plate are arranged at one end of each main shaft, a plurality of stiffening plates are uniformly distributed on the outer circle of the other side of each main shaft, and a gap is arranged between each outer lug plate and the corresponding inner lug plate. A plurality of through pin holes are formed in the plate face of the outer lug plate, a plurality of through threaded holes are formed in the plate face of the inner lug plate, and the pin holes correspond to the threaded holes in a one-to-one mode. The problem of safety risk caused by shaking of a lifting hook when a worker hangs a sling during traditional jacket hoisting is solved.

Description

Technical Field

[0001] This utility model relates to the field of jacket erection, and in particular to a lifting lug device for jacket erection. Background Technology

[0002] The installation of jacket structures in offshore wind farm construction requires advanced technology and is a key factor in the process. In deep water, jacket structures can weigh over a thousand tons, necessitating heavier shackles for hoisting. Furthermore, the combined effects of weather, waves, currents, and tides make the installation of shackles and lifting lugs on the jacket structure by crane vessels even more challenging. Therefore, selecting a suitable installation method can effectively improve the efficiency of jacket hoisting.

[0003] For construction conditions characterized by harsh sea conditions, limited machinery and equipment, and high labor costs, the available hoisting methods are shackle installation and sling hoisting. However, shackle installation has a long construction period, poor adaptability to sea conditions, high labor costs, and a low safety factor, which seriously affects the project's construction schedule. To improve the efficiency of offshore construction, accelerate the construction progress, and ensure construction safety, there is an urgent need to develop a lifting lug device for jacket sling hoisting. Utility Model Content

[0004] The main purpose of this utility model is to provide a lifting lug device for slinging jackets. The slinging method is more advanced than the traditional process, the method of use is simple, the operation is safer, and it solves the safety risk caused by the swaying of the hook when personnel hang the slings during the traditional jacket hoisting.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a lifting lug device for suspending a guide tube frame, including a guide tube frame, the guide tube frame is provided with multiple main legs, multiple main shafts are provided on one side of the main legs, one end of the main shaft is provided with an outer ear plate and an inner ear plate, and multiple stiffening plates are evenly distributed on the outer circle of the other side of the main shaft;

[0006] There is a gap between the outer ear plate and the inner ear plate. The outer ear plate has multiple through-holes, and the inner ear plate has multiple through-holes. The through-holes and the threaded holes correspond one-to-one.

[0007] In the preferred embodiment, a detachable pin is provided between the outer ear plate and the inner ear plate.

[0008] In the preferred embodiment, one end of the pin is provided with a threaded portion, which is used to engage with a threaded hole.

[0009] In the preferred embodiment, the main legs are arranged at the four positions A, B, C, and D of the jacket frame, forming a square with the vertices facing each other.

[0010] In the preferred embodiment, the spindles are arranged on both sides of the main leg, and an included angle F is provided between the two spindles.

[0011] In the preferred embodiment, the included angle F is 120-150 degrees.

[0012] In the preferred embodiment, a sling is also provided in the gap between the outer ear plate and the inner ear plate, and the sling eventually converges at point E on the guide frame;

[0013] The pin is used to press the sling between the outer and inner ear plates to prevent it from coming off the hook.

[0014] In the preferred embodiment, the stiffening plate is welded to the main leg.

[0015] This utility model provides a lifting lug device for suspending a catheter stent, which has the following beneficial effects:

[0016] 1. The structure is simple, all are factory-made, with high processing precision, and the efficiency of installing the slings is higher than that of traditional processes. The method of use is simple.

[0017] 2. It fully solves the problem of protecting the finished product during the installation of the jacket foundation. Under poor sea conditions, the sling will not damage the transition platform structure and corrosion protection of the jacket foundation.

[0018] 3. The operation is safer. Compared with the existing process of hooking the guide frame with shackles, this utility model adopts a sling-lifting method, which greatly reduces the safety risks caused by the swaying of the hook when the construction workers hang the slings. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram showing the distribution of the hoisting device of this utility model;

[0021] Figure 2 This is a schematic diagram of the included angle of the spindle of this utility model;

[0022] Figure 3 This is an isometric view of the spindle of this utility model;

[0023] Figure 4 This is a schematic diagram of the pin-shaft clamping sling of this utility model;

[0024] Figure 5 This is a schematic diagram of the pin connection of this utility model;

[0025] Figure 6 This is a perspective view of the main shaft of this utility model;

[0026] Figure 7 This is a schematic diagram of the ear plate of this utility model.

[0027] In the diagram: Inner ear plate 1; Outer ear plate 2; Main shaft 3; Stiffening plate 4; Through pin hole 5; Sling 6; Guide frame 7; Main leg 8; Threaded hole 9; Pin 10; Threaded part 11. Detailed Implementation

[0028] Example 1

[0029] like Figure 1-7 As shown, a lifting lug device for suspending a duct frame includes a duct frame 7. The duct frame 7 is provided with multiple main legs 8. Multiple main shafts 3 are provided on one side of the main legs 8. One end of the main shaft 3 is provided with an outer ear plate 2 and an inner ear plate 1. Multiple stiffening plates 4 are evenly distributed on the outer circle of the other side of the main shaft 3.

[0030] There is a gap between the outer ear plate 2 and the inner ear plate 1. The outer ear plate 2 has multiple through-holes 5, and the inner ear plate 1 has multiple through-holes 9. The through-holes 5 and the through-holes 9 correspond one-to-one.

[0031] In the preferred embodiment, a detachable pin 10 is provided between the outer ear plate 2 and the inner ear plate 1.

[0032] In the preferred embodiment, one end of the pin 10 is provided with a threaded portion 11, which is used to engage with the threaded hole 9.

[0033] In the preferred embodiment, the main legs 8 are arranged at the four positions A, B, C, and D of the jacket frame 7, forming a square with the vertices facing each other.

[0034] In the preferred embodiment, the main shaft 3 is arranged on both sides of the main leg 8, and an included angle F is provided between the two main shafts 3.

[0035] In the preferred embodiment, the included angle F is 120-150 degrees.

[0036] In the preferred embodiment, a sling 6 is also provided in the gap between the outer ear plate 2 and the inner ear plate 1, and the sling 6 eventually converges at point E on the guide frame 7;

[0037] The pin 10 is used to press the sling 6 between the outer ear plate 2 and the inner ear plate 1 to prevent it from coming off.

[0038] In the preferred embodiment, the stiffening plate 4 is welded to the main leg 8.

[0039] A specific implementation of a lifting lug device for suspending a guide frame is as follows: The lifting lug device is formed by welding the main leg 8, main shaft 3, outer lug plate 2, inner lug plate 1, pin shaft 10 and stiffening plate 4 to the outer circle of the main shaft to form a three-dimensional lifting node.

[0040] The sling 6 passes through the gap between the outer ear plate 2 and the inner ear plate 1, is pressed by the pin 10, and finally converges at point E of the guide frame to complete the hoisting.

[0041] The main shafts 3 in the four directions A, B, C, and D are hoisted to the side of the main legs 8 and temporarily fixed with saddle plates. The verticality deviation is adjusted to ≤1.5mm. The stiffening plate 4 and the main legs 8 are connected by double-sided fillet welds with a weld leg size of 12mm.

[0042] To reduce deformation, a segmented back-welding method was implemented, with each weld segment being 300mm long and welded at 50mm intervals. After welding, 100% ultrasonic testing was performed. After the slings 6 converged at point E, the load deviation of each lifting point was adjusted.

[0043] During the lifting process, maintain the included angle F of the main shafts at points A, B, C, and D at 120°-150°. After the slings 6 converge at point E, pause for 10 minutes when the guide frame 7 is 500mm off the ground, and then check the pin torque and weld condition again.

[0044] This lifting lug device achieves high efficiency and safety in jacket erection through modular design, detachable connection, and three-dimensional force transmission path, making it particularly suitable for lifting large structures in complex environments such as offshore wind power.

[0045] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A lifting lug device for suspending a catheter support, comprising a catheter support (7) having multiple main legs (8), characterized in that: The main leg (8) has multiple main shafts (3) on one side, and one end of the main shaft (3) has an outer ear plate (2) and an inner ear plate (1). Multiple stiffening plates (4) are evenly distributed on the outer circle of the other side of the main shaft (3). There is a gap between the outer ear plate (2) and the inner ear plate (1). The outer ear plate (2) has multiple through-holes (5) and the inner ear plate (1) has multiple through-holes (9). The through-holes (5) and the through-holes (9) correspond one-to-one.

2. The lifting lug device for suspending a catheter stent according to claim 1, characterized in that: A detachable pin (10) is provided between the outer ear plate (2) and the inner ear plate (1).

3. The lifting lug device for suspending a catheter stent according to claim 2, characterized in that: One end of the pin (10) is provided with a threaded part (11), which is used to engage with the threaded hole (9).

4. The lifting lug device for suspending a catheter stent according to claim 1, characterized in that: The main legs (8) are arranged in the four directions of A, B, C and D of the guide frame (7), forming a square with the apex of the frame.

5. The lifting lug device for suspending a catheter stent according to claim 1, characterized in that: The main shaft (3) is arranged on both sides of the main leg (8), and there is an included angle F between the two main shafts (3).

6. The lifting lug device for suspending a catheter stent according to claim 5, characterized in that: The included angle F is between 120 and 150 degrees.

7. The lifting lug device for suspending a catheter stent according to claim 1, characterized in that: A sling (6) is also provided in the gap between the outer ear plate (2) and the inner ear plate (1), and the sling (6) eventually converges at point E on the guide frame (7); The pin (10) is used to press the sling (6) between the outer ear plate (2) and the inner ear plate (1) to prevent it from coming off.

8. The lifting lug device for suspending a catheter stent according to claim 1, characterized in that: The stiffening plate (4) is welded to the main leg (8).

Images