Wind power single pile foundation inner platform horizontal trial assembly device

Abstract

A wind power single pile foundation inner platform horizontal trial assembly device comprises a base, a hydraulic cylinder, an overturning supporting structure, a lead screw limiting device and a vertical supporting rod. And the inner platform in a horizontal state can be overturned to be in a vertical state, and trial assembly is carried out on the inner platform and a horizontally-placed single pile body. Wherein the vertical supporting rod can provide support for the inner platform and the turnover supporting structure when the vertical supporting rod is in a horizontal state, the hydraulic rod drains oil and the piston rod stretches out and draws back; the fixed base bears the whole device; the hydraulic rod provides overturning power; the overturning supporting structure drives the inner platform connected with the overturning supporting structure to execute overturning action, and the lead screw limiting device conducts limiting and can conduct fine adjustment on the position of the inner platform. And the height position of the single pile body and the inner platform are adjusted through the module vehicle for trial assembly. The rapid trial assembly of the single pile foundation inner platform is realized, the working efficiency is improved, the labor intensity of workers is reduced, and the trial assembly precision is relatively high; the device can be suitable for single piles with different diameters and is high in universality; and a universal trial assembly device design is adopted, so that the trial assembly cost can be greatly reduced.

Description

A horizontal trial assembly device for an inner platform of a wind turbine monopile foundation Technical Field

[0001] This utility model relates to the field of offshore wind power technology, and specifically discloses a horizontal trial installation device for an inner platform of a wind turbine monopile foundation. Background Technology

[0002] China's energy structure is gradually transforming, and offshore wind power has become an important part of the wind power sector due to its favorable wind resource environment. There are many types of offshore wind power foundations, among which monopile foundations are the most widely used. Monopile foundations have advantages such as simple structure, convenient construction, and good economy, and their application is becoming increasingly widespread in water depths of less than 30m.

[0003] A working platform (hereinafter referred to as the inner platform) is usually installed on top of the pile in a monopile foundation. The inner platform is fixed to a ring plate welded to the pile by a ring of bolts. The main function of the inner platform is to house various electrical equipment, cable trays, etc., and it also serves as the working platform for the connecting bolts between the tower and the foundation. The inner platform is relatively large, with a diameter of 7-9m, and has a large number of threaded holes, usually 48-60. Due to the limited equipment capacity of wind power foundation manufacturers, misalignment of threaded holes often occurs during actual construction. In addition, due to the height of the pile, the inner platform can only be trial-installed when the pile is in a horizontal position. Furthermore, because the inner platform is a certain distance from the pile top flange, usually about 1.2m, and the gap between the inner diameter of the pile top flange and the inner platform is small, it is difficult to achieve the trial installation of the inner platform using ordinary hoisting methods.

[0004] To address the above issues, it is necessary to research a safe, stable, and efficient device for the trial installation of an internal platform and a monopile foundation. Summary of the Invention

[0005] To overcome the above problems, this utility model provides a horizontal trial installation device for the inner platform of a wind turbine monopile foundation.

[0006] The technical solution of this utility model is as follows:

[0007] A horizontal trial installation device for an inner platform of a wind turbine monopile foundation includes:

[0008] The base is a frame structure and is fixed to the foundation by anchor bolts;

[0009] A flip-up support structure, disposed on the base, for flipping the inner platform, includes:

[0010] At least one set of hydraulic cylinders, the cylinder body of which is hinged to the base;

[0011] Two sets of limiting support frames are welded to both sides of the base;

[0012] A support plate, the bottom surface of which is hinged to the piston end of the hydraulic cylinder and the top end of the limiting support frame; the upper surface of the support plate is provided with multiple support rods;

[0013] The inner platform has multiple lifting lugs at the bottom, and the lifting lugs are hinged to the ends of the support rods;

[0014] The hydraulic cylinder is connected to the hydraulic station via an oil pipe. The rotation of the support plate is controlled by the extension and retraction of the piston in the hydraulic cylinder, which in turn controls the rotation of the inner platform.

[0015] The limiting support frame is a right-angled triangle, and the limiting support frame is located on the edge of the base. The longitudinal right-angled side of the limiting support frame is coplanar with the column of the base in the vertical direction.

[0016] The base is also equipped with a lead screw limiting device. The lead screw moves back and forth through the thread, providing a limiting function for the inner platform while finely adjusting the position and angle of the inner platform to ensure accurate trial assembly position.

[0017] The base is also equipped with vertical support rods. When the inner platform is in a horizontal state, the vertical support rods can provide support for it and reduce the pressure on the hydraulic cylinder.

[0018] This utility model has the following beneficial effects:

[0019] The present invention discloses a horizontal trial assembly device for the inner platform of a wind turbine monopile foundation. This device enables rapid trial assembly of the inner platform of the monopile foundation, improving work efficiency, reducing labor intensity, and achieving high assembly accuracy. This device is applicable to monopiles of different diameters and has strong versatility. The universal design of the inner platform trial assembly device can greatly reduce the cost of trial assembly. Attached Figure Description

[0020] Figure 1 is a three-dimensional structural diagram of the trial assembly device;

[0021] Figure 2 shows a schematic diagram of the location of the trial installation device and the single pile;

[0022] The components include: 1. Base; 3. Tilting support structure; 301. Support plate; 302. Support rod; 303. Hydraulic cylinder; 304. Limiting support frame; 305. Support plate; 4. Inner platform; 401. Lifting lug; 5. Screw limiting device; 6. Vertical strut; 7. Single pile body. Detailed Implementation

[0023] To make the objectives and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and do not limit the scope of protection of the present invention.

[0024] As shown in Figure 1, a horizontal trial assembly device for an inner platform of a wind turbine monopile foundation includes: a base 1, a flip support structure 3, an inner platform plate 4, a screw limit device 5, a vertical support rod 6, and a monopile body 7.

[0025] As shown in Figure 1, the base 1 is a frame structure, which is fixed to the foundation by anchor bolts;

[0026] The flipping support structure 3 is set on the base 1 and is used to flip the inner platform plate 4. The flipping support structure 3 includes: at least one set of hydraulic cylinders 303, two sets of limit support frames 304 and support plate 301.

[0027] Figures 1 and 2 show two sets of hydraulic cylinders 303 as specific embodiments. The cylinder body of the hydraulic cylinder 303 is hinged to both sides of the base 1. The number of sets of hydraulic cylinders 303 needed can be selected according to the requirements to prevent a single hydraulic cylinder 303 from bearing too much pressure and causing an accident.

[0028] Two sets of limiting support frames 304 are provided on the edge of the base 1. The limiting support frames 304 are welded to both sides of the base. When the inner platform plate 4 is still in a horizontal state and has not started to flip, the limiting support frames 304 and the hydraulic cylinder 303 provide support for the inner platform 4 and the support plate.

[0029] As shown in Figures 1 and 2, the limiting support frame 304 is a right-angled triangle. The limiting support frame 304 is located at the edge of the base 1, and the longitudinal right-angled side of the limiting support frame 304 is coplanar with the vertical plane f of the column of the base 1. Designing the longitudinal right-angled side of the limiting support frame 304 close to the edge of the base 1 allows the surface containing this right-angled side to support and limit the support plate 301 after it is flipped, preventing the support plate 301 from flipping at an excessive angle, which would be detrimental to the subsequent trial assembly of the inner platform 4.

[0030] The bottom surface of the support plate 301 is hinged to the piston end of the hydraulic cylinder 303 and the top end of the limiting support frame 304. The upper surface of the support plate 301 is provided with multiple support rods 302, as shown in Figure 1. There are 4 support rods, which are evenly distributed and inclined. When it is necessary to flip, it is only necessary to connect the hydraulic cylinder 303 to the hydraulic station through an oil pipe. The flipping of the support plate is controlled by the extension and retraction of the piston in the hydraulic cylinder, thereby controlling the flipping of the inner platform.

[0031] During the flipping process, as the piston rod of the hydraulic cylinder 303 extends and retracts, the inner platform 301 flips using its hinge point with the limiting support frame 304 as the fulcrum.

[0032] The bottom of the inner platform 4 is provided with multiple lifting lugs 401, as shown in the figure. There are four lifting lugs, and the lifting lugs 401 are hinged to the end of the support rod 302.

[0033] As shown in Figure 1, the base 1 is also equipped with a lead screw limiting device 5. The lead screw moves back and forth through the thread, providing a limiting function for the inner platform 4 while finely adjusting the position and angle of the inner platform 4 to ensure accurate trial assembly position.

[0034] As shown in Figure 1, the base 1 is also provided with a vertical support rod 6. When the inner platform 4 is in a horizontal state, the vertical support rod 6 can provide support for it and reduce the pressure of the hydraulic cylinder 303.

[0035] As shown in Figure 2, the single pile body 7 is placed on a special tooling, and the inner platform 4 is trial-assembled by moving its position using a modular vehicle.

[0036] The specific trial assembly process steps are as follows:

[0037] a. Installation and fixing of the trial assembly device: The base 1 is fixed to the foundation with anchor bolts. In the initial state, the hydraulic cylinder 303 is not filled with oil, the piston rod is in the retracted state, and the flip support structure 3 remains horizontal. At this time, the vertical support rod 6 provides support for the flip support structure 3.

[0038] b. Connection and fixation of inner platform 4 and trial installation device: Four lifting lugs 401 are welded to the upper end face of inner platform 4. The inner platform 4 is connected and fixed to the tilting support structure 3 through the lifting lugs 401. At the same time, the lifting lugs 401 can be used for construction and installation of the inner platform at sea.

[0039] c. The inner platform flips to a vertical position: After the inner platform 4 is fixed to the test assembly device, the hydraulic cylinder 303 is filled with oil, the piston rod is in the extended position, and the power is provided to lift the support plate 301 and the inner platform 4, and gradually flip it to realize the transformation from a horizontal state to a vertical state.

[0040] d. Adjusting the vertical position and angle of the inner platform: After the inner platform 4 is flipped to a vertical position, the angle and position of the inner platform 4 can be finely adjusted by the screw limit device 5 fixed on the base 1, while also achieving the limit function. This avoids shaking problems caused by excessive flipping angle of the inner platform 4 or unstable pressure of the hydraulic cylinder 303.

[0041] e. Trial installation of the movable single pile body: The single pile body 7 is placed horizontally on a special tooling, and the position and height of the single pile body 7 are adjusted by the modular vehicle to achieve the trial installation of the inner platform 4.

[0042] Steps a-e constitute the trial installation process of the monopile inner platform.

[0043] The internal platform trial assembly device enables rapid trial assembly of the internal platform of a single pile foundation, improving work efficiency, reducing labor intensity, and achieving high trial assembly accuracy. This trial assembly device is applicable to single piles of different diameters and has strong versatility. The adoption of a universal trial assembly device design can greatly reduce trial assembly costs.

[0044] The technical solutions and implementation methods listed in this invention are not intended to limit the scope of this invention. Any solutions or methods that are equivalent to or have the same effect as those listed in this invention are within the scope of protection of this invention.

Claims

1. A horizontal trial assembly device for an inner platform of a wind turbine monopile foundation, characterized in that: include: The base is a frame structure and is fixed to the foundation by anchor bolts; A flipping support structure, mounted on the base, is used to flip the inner platform. It includes: at least one set of hydraulic cylinders, the cylinder bodies of which are hinged to the base; two sets of limiting support frames, welded to both sides of the base; a support plate, the bottom surface of which is hinged to the piston end of the hydraulic cylinder and the top end of the limiting support frames; multiple support rods on the upper surface of the support plate; and an inner platform with multiple lifting lugs at its bottom, the lugs being hinged to the ends of the support rods. The hydraulic cylinders are connected to a hydraulic station via oil pipes, and the flipping of the support plate, and thus the flipping of the inner platform, is controlled by the extension and retraction of the pistons in the hydraulic cylinders.

2. The horizontal trial assembly device for the inner platform of a wind turbine monopile foundation according to claim 1, characterized in that: The limiting support frame is a right-angled triangle, and the limiting support frame is located on the edge of the base. The longitudinal right-angled side of the limiting support frame is coplanar with the vertical plane of the column of the base.

3. A horizontal trial assembly device for an inner platform of a wind turbine monopile foundation according to claim 1 or 2, characterized in that: The base is also equipped with a lead screw limiting device. The lead screw moves back and forth through the thread, providing a limiting function for the inner platform while finely adjusting the position and angle of the inner platform to ensure accurate trial assembly position.

4. A horizontal trial installation device for an inner platform of a wind turbine monopile foundation according to claim 1 or 2, characterized in that: The base is also equipped with vertical support rods. When the inner platform is in a horizontal state, the vertical support rods can provide support for it and reduce the pressure on the hydraulic cylinder.

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