Single pile guide frame

Abstract

The invention relates to the technical field of wind power generation equipment mounting machinery, and discloses a single pile guide frame, a guide frame body is arranged on the outer side of a single pile foundation, positioning pile guide cylinders are arranged around the guide frame body, and assembly parts are fixedly mounted on the two sides of the guide frame body; a single pile mounting barrel is arranged at the center of the guide frame body, a transfer positioning mechanism is rotationally arranged at the top of the outer wall of the single pile mounting barrel, a centering adjusting mechanism is arranged at the bottom of the guide frame body, and the centering adjusting mechanism drives a hanging bracket to slide through a hydraulic oil cylinder to drive a push wheel to extrude a notch of a center block. The push wheel is matched with the inclined face of the notch, radial fine adjustment can be conducted on the single pile, the coaxiality deviation of the single pile in the single pile installation cylinder is corrected in real time, the situation that the single pile inclines due to factors such as hoisting errors and foundation settlement is avoided, and it is ensured that the perpendicularity of the single pile in the pile sinking process meets the design requirement.

Description

Technical Field

[0001] This invention relates to the field of wind power equipment installation machinery technology, specifically a monopile guide frame. Background Technology

[0002] A single pile is a single pile foundation component that bears the load of the superstructure on its own. It is the most basic unit form in pile foundation engineering. It is usually made of steel or concrete and is driven vertically into or cast into the foundation to directly transfer the load of the superstructure to a deep and stable soil or rock layer.

[0003] In the monopile foundation installation stage of offshore wind power generation, the positioning pile is first inserted into the guide frame, usually by hoisting. During operation, crosswinds at sea can cause the lower end of the positioning pile to deviate from the predetermined insertion track, resulting in poor control of the positioning pile and making it difficult to align the positioning pile with the guide cylinder. To address these shortcomings, we propose a monopile guide frame. Summary of the Invention

[0004] The purpose of this invention is to provide a monopile guide frame to solve the problems mentioned in the background section. To achieve the above objective, this invention provides the following technical solution: it includes a monopile foundation, wherein the monopile foundation is configured as a columnar structure;

[0005] A guide frame is provided on the outside of the monopile foundation, and a positioning pile guide cylinder is provided around the guide frame. Assembly parts are fixedly installed on both sides of the guide frame, and a monopile installation cylinder is provided at the center of the guide frame.

[0006] The top of the outer wall of the single pile installation cylinder is rotatably equipped with a transfer positioning mechanism, and the bottom of the guide frame is equipped with a centering adjustment mechanism.

[0007] The transfer positioning mechanism includes a drive ring, which is rotatably connected to a single pile installation cylinder. A swing frame is fixedly connected to the outer wall of the drive ring. A baffle is fixedly installed on the top of the end of the swing frame away from the drive ring. The opening on one side of the baffle faces away from the guide frame. A central sleeve is fixedly installed at the bottom of the swing frame. A lower docking sleeve is movably fitted below the central sleeve. An upper docking sleeve is movably fitted above the central sleeve. The sides of the lower docking sleeve and the upper docking sleeve that are far apart from each other are arranged in a funnel shape.

[0008] The pendulum frame is rotatably equipped with forward and reverse screws on both sides. A lower connecting sleeve and an upper connecting sleeve are screwed onto the forward and reverse screws respectively. A drive motor is provided at one end of the forward and reverse screws, and the forward and reverse screws are rotatably connected to the drive motor.

[0009] Preferably, the bottom diameter of the lower connecting sleeve is larger than the diameter of the positioning pile guide cylinder, and the top diameter of the upper connecting sleeve is larger than the diameter of the positioning pile in the positioning pile guide cylinder.

[0010] Preferably, the bottom of the guide frame is surrounded by an installation frame at the outer edge of the single pile installation cylinder, the bottom of the installation frame is hinged to a hanger rod, and a center block is fixedly connected to the middle of the hanger rod.

[0011] Preferably, the outer side of the central block has an oblique cut, and a pusher is provided at the cut, with the surface of the pusher abutting against the central block through the cut.

[0012] Preferably, a hanger is connected to the outer side of the push wheel, and the hanger is slidably connected to the guide frame.

[0013] Preferably, a contact head is fixedly connected to the bottom end of the boom facing the monopile mounting cylinder, and the contact head is configured as an arc surface.

[0014] Preferably, a hydraulic cylinder is provided on the guide frame, and the hydraulic cylinder is connected to the hanger.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] In this invention, a transfer positioning mechanism is used to achieve precise docking between the positioning pile and the positioning pile guide cylinder. The drive motor drives the forward and reverse screw to rotate, which can simultaneously adjust the distance between the upper and lower docking sleeves. The top of the upper docking sleeve and the bottom of the lower docking sleeve are both designed with a trumpet-shaped structure, which plays a good guiding and correction role, allowing the positioning pile to be quickly and coaxially inserted into the positioning pile guide cylinder. At the same time, the drive ring can drive the swing frame to rotate around the single pile installation cylinder, realizing the switching of the transfer positioning mechanism at the positioning pile guide cylinder in different positions. There is no need to repeatedly adjust the overall position of the guide frame, which improves the docking accuracy of the positioning pile and ensures the stability of the guide frame installation benchmark.

[0017] In this invention, the centering adjustment mechanism drives the hanger to slide upward via a hydraulic cylinder, causing the pusher to press against the cut of the center block. By utilizing the inclined surface of the pusher and the cut, the hanger rod is pushed to swing around the hinge point of the mounting frame, so that the arc-shaped contact head at the bottom of the hanger rod fits against the outer wall of the single pile. Through the coordinated action of multiple sets of centering adjustment mechanisms arranged around the pile, the single pile can be radially fine-tuned, and the coaxiality deviation of the single pile in the single pile installation cylinder can be corrected in real time. This avoids the single pile from tilting due to factors such as hoisting errors and foundation settlement, and ensures that the verticality of the single pile during the pile driving process meets the design requirements. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2This is a top view of the structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the transfer and positioning mechanism of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the central sleeve and the two mating sleeves of the present invention;

[0022] Figure 5 This is a schematic diagram of the centering adjustment mechanism of the present invention.

[0023] In the diagram: 100, monopile foundation; 200, guide frame; 210, positioning pile guide cylinder; 220, assembly; 230, monopile installation cylinder; 300, transfer positioning mechanism; 310, drive ring; 320, swing frame; 330, stop frame; 340, center sleeve; 350, lower connecting sleeve; 360, upper connecting sleeve; 370, forward and reverse screw; 380, drive motor; 400, centering adjustment mechanism; 410, mounting frame; 420, lifting rod; 430, center block; 440, notch; 450, push wheel; 460, hanger; 470, contact head; 480, hydraulic cylinder. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1 to 5 The present invention provides a technical solution: including a single pile foundation 100, wherein the single pile foundation 100 is configured as a column structure;

[0026] A guide frame 200 is provided on the outside of the single pile foundation 100. A positioning pile guide cylinder 210 is arranged around the guide frame 200. Assembly parts 220 are fixedly installed on both sides of the guide frame 200. A single pile installation cylinder 230 is provided at the center of the guide frame 200.

[0027] The top of the outer wall of the single pile installation cylinder 230 is rotatably equipped with a transfer positioning mechanism 300, and the bottom of the guide frame 200 is equipped with a centering adjustment mechanism 400.

[0028] The transfer positioning mechanism 300 includes a drive ring 310, which is rotatably connected to the single pile installation cylinder 230. A swing frame 320 is fixedly connected to the outer wall of the drive ring 310. A baffle 330 is fixedly installed on the top of the end of the swing frame 320 away from the drive ring 310. The opening on one side of the baffle 330 faces away from the guide frame 200. A central sleeve 340 is fixedly installed at the bottom of the swing frame 320. A lower docking sleeve 350 is movably fitted below the central sleeve 340. An upper docking sleeve 360 ​​is movably fitted above the central sleeve 340. The sides of the lower docking sleeve 350 and the upper docking sleeve 360 ​​that are far apart from each other are arranged in a funnel shape.

[0029] In this embodiment, the guide frame 200 is first hoisted to the designated construction area and fixed to the external work platform by the side fittings 220 to ensure the initial stability of the guide frame 200. The surrounding positioning pile guide cylinders 210 are respectively aligned with the preset positioning pile construction points to provide an initial guiding reference for driving the positioning piles.

[0030] In this embodiment, the drive ring 310 of the transfer positioning mechanism 300 is activated. The drive ring 310 rotates around the outer wall of the single pile installation cylinder 230, driving the swing frame 320 to rotate synchronously. The upper docking sleeve 360 ​​and the lower docking sleeve 350 at one end of the swing frame 320 are aligned with the top of the guide cylinder 210 of the first positioning pile to be installed. At the same time, the baffle frame 330 moves with the swing frame 320 to one side of the positioning pile hoisting path, with the opening facing away from the guide frame body 200, to provide limit protection for the hoisting of the positioning pile.

[0031] The swing frame 320 is rotatably equipped with forward and reverse screws 370 on both sides. The forward and reverse screws 370 are respectively screwed with a lower connecting sleeve 350 and an upper connecting sleeve 360. A drive motor 380 is provided at one end of the forward and reverse screws 370, and the forward and reverse screws 370 are rotatably connected to the drive motor 380.

[0032] The bottom diameter of the lower connecting sleeve 350 is larger than the diameter of the positioning pile guide cylinder 210, and the top diameter of the upper connecting sleeve 360 ​​is larger than the diameter of the positioning pile in the positioning pile guide cylinder 210.

[0033] The positioning pile is lifted by a crane to the opening of the retaining frame 330. The retaining frame 330 provides temporary protection for the positioning pile to prevent it from shifting under stress during the lifting process.

[0034] In this embodiment, according to the diameter of the positioning pile to be installed and the size of the positioning pile guide cylinder 210, the drive motor 380 is started. The drive motor 380 drives the forward and reverse screw 370 to rotate. Since the lower docking sleeve 350 and the upper docking sleeve 360 ​​are respectively screwed to different thread sections of the forward and reverse screw 370, when the screw rotates, it drives the two to move away synchronously along the axial direction of the central sleeve 340. The top flared opening of the upper docking sleeve 360 ​​covers the bottom end of the positioning pile, and the bottom flared opening of the lower docking sleeve 350 covers the bottom end of the positioning pile guide cylinder 210, reserving space for docking and correction. The crane slowly lowers the positioning pile so that its bottom end enters the flared opening of the upper docking sleeve 360 ​​first. The flared opening structure performs preliminary correction on the positioning pile and guides the positioning pile to fall along the axial direction.

[0035] In this embodiment, the positioning pile is continuously lowered. After the bottom end passes through the upper docking sleeve 360 ​​and the central sleeve 340, it enters the flared mouth of the lower docking sleeve 350. The lower docking sleeve 350 further corrects the verticality of the positioning pile to ensure that the positioning pile and the positioning pile guide tube 210 are coaxially aligned. Finally, the bottom end of the positioning pile is inserted into the positioning pile guide tube 210 to complete the precise docking.

[0036] In this embodiment, the pile driving equipment is started to drive the positioning pile into the foundation along the positioning pile guide tube 210. After the positioning pile is installed, the drive ring 310 is started again to drive the swing frame 320 to rotate and switch to the position of the next positioning pile guide tube 210. The above docking and driving process is repeated until all positioning piles are installed, providing a stable positioning support for the guide frame 200 and strengthening the overall benchmark stability.

[0037] The bottom of the guide frame 200 is surrounded by an installation frame 410 at the outer edge of the single pile installation cylinder 230. The bottom of the installation frame 410 is hinged to a hanger 420, and a center block 430 is fixedly connected to the middle of the hanger 420.

[0038] A notch 440 is obliquely opened on the outer side of the center block 430, and a pusher 450 is provided at the notch 440. The surface of the pusher 450 abuts against the center block 430 through the notch 440.

[0039] The outer side of the pusher 450 is connected to the hanger 460, which is slidably connected to the guide frame 200.

[0040] The bottom end of the boom 420 is fixedly connected to a contact head 470 on the side facing the monopile installation cylinder 230. The contact head 470 is set as an arc surface.

[0041] A hydraulic cylinder 480 is installed on the guide frame 200, and the hydraulic cylinder 480 is connected to the hanger 460.

[0042] In this embodiment, after all the positioning piles are installed, the single pile foundation 100 to be installed is hoisted into the single pile installation cylinder 230 in the center of the guide frame 200 by a crane and slowly lowered to the preset height. At this time, the single pile foundation 100 is temporarily in a free suspension state, and there may be slight radial offset or verticality deviation due to hoisting error.

[0043] In this embodiment, the hydraulic cylinder 480 on the guide frame 200 extends and retracts, causing the hanger 460 connected to it to slide along the guide frame 200. The hanger 460 drives the inner push wheel 450 to move synchronously. The push wheel 450 moves towards the center block 430, and its surface abuts against the inclined cutout 440 on the outer side of the center block 430, generating a lateral thrust by using the inclined surface cooperation.

[0044] In this embodiment, the center block 430 is pushed by the pusher wheel 450, which drives the fixed rod 420 to swing around the bottom hinge point of the mounting frame 410. Since the mounting frame 410 is set around the single pile mounting cylinder 230, multiple sets of centering adjustment mechanisms 400 move synchronously. The arc-shaped contact head 470 at the bottom of the rod 420 gradually fits into the outer wall of the single pile foundation 100 to avoid damage to the surface of the single pile. By adjusting the extension and retraction of the hydraulic cylinders 480 in different positions, the swing amplitude of the corresponding rod 420 is controlled, and the single pile is radially fine-tuned to correct the coaxiality and verticality of the single pile, so that the single pile foundation 100 is always in the center position of the single pile mounting cylinder 230.

[0045] The method of use and advantages of this invention: The working process of this monopile guide frame is as follows:

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown:

[0047] S1: First, fix the guide frame 200 to the external working platform through the side fittings 220 to achieve the initial positioning of the whole. Align the positioning pile guide cylinders 210 arranged around the preset points to establish the initial guiding benchmark for driving the positioning piles. Drive the swing frame 320 around the single pile installation cylinder 230 through the drive ring 310 of the transfer positioning mechanism 300. The docking position can be flexibly switched so that the upper and lower docking sleeves 350 are accurately aligned with each positioning pile guide cylinder 210. Together with the baffle frame 330, the positioning pile hoisting limit protection is formed, laying the foundation for subsequent docking operations.

[0048] S2: Utilizing the bidirectional transmission characteristics of the forward and reverse screw 370, when the drive motor 380 drives the screw to rotate, the upper and lower connecting sleeves 350, which are screwed to different thread sections, move away synchronously along the central sleeve 340. Combined with the flared structure of the two, a bidirectional guiding and correction channel is formed, which effectively compensates for the hoisting error and guides the positioning pile to fall accurately into the positioning pile guide cylinder 210 along the axis, achieving coaxial alignment. After the positioning pile is connected, it is driven into the foundation along the guide cylinder. After multiple positioning piles are installed in sequence, they provide stable support for the guide frame 200, enhance the stability of the overall positioning benchmark, and prevent the guide frame 200 from deviating during subsequent single pile installation.

[0049] S3: After the monopile foundation 100 is hoisted into the monopile installation cylinder 230, it forms a closed-loop constraint with multiple sets of centering adjustment mechanisms 400 arranged around it. The hydraulic cylinder 480 drives the hanger 460 to move the push wheel 450. The inclined cut 440 of the push wheel 450 and the center block 430 generate lateral thrust through the inclined surface cooperation, which forces the boom 420 to swing around the hinge point of the installation frame 410. By adjusting the extension and retraction of the hydraulic cylinder 480 in different positions, the swing amplitude of the corresponding boom 420 is controlled, so that the arc-shaped contact head 470 at the bottom of the boom 420 flexibly fits the outer wall of the monopile. This avoids damage to the surface of the monopile and allows for real-time radial fine adjustment of the monopile, correcting the radial offset and verticality deviation caused by hoisting errors. This ensures that the monopile foundation 100 is always in the center position of the monopile installation cylinder 230, providing precise attitude constraints for subsequent pile driving operations.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-pile guide frame, characterized in that, Includes a single pile foundation (100), wherein the single pile foundation (100) is configured as a column structure; A guide frame (200) is provided on the outside of the single pile foundation (100), and a positioning pile guide cylinder (210) is provided around the guide frame (200). Mounting accessories (220) are fixedly installed on both sides of the guide frame (200), and a single pile mounting cylinder (230) is provided at the center of the guide frame (200). The top of the outer wall of the single pile installation cylinder (230) is rotatably provided with a transfer positioning mechanism (300), and the bottom of the guide frame (200) is provided with a centering adjustment mechanism (400). The transfer positioning mechanism (300) includes a drive ring (310), which is rotatably connected to a single pile installation cylinder (230). A swing frame (320) is fixedly connected to the outer wall of the drive ring (310). A baffle (330) is fixedly installed on the top of the end of the swing frame (320) away from the drive ring (310). The opening on one side of the baffle (330) faces away from the guide frame (200). A central sleeve (340) is fixedly installed at the bottom of the swing frame (320). A lower docking sleeve (350) is movably fitted below the central sleeve (340). An upper docking sleeve (360) is movably fitted above the central sleeve (340). The sides of the lower docking sleeve (350) and the upper docking sleeve (360) that are far apart from each other are arranged in a trumpet shape. The pendulum frame (320) is rotatably provided with forward and reverse screws (370) on both sides. The forward and reverse screws (370) are respectively screwed with a lower connecting sleeve (350) and an upper connecting sleeve (360). A drive motor (380) is provided at one end of the forward and reverse screws (370), and the forward and reverse screws (370) are rotatably connected to the drive motor (380).

2. The single-pile guide frame according to claim 1, characterized in that: The bottom diameter of the lower connecting sleeve (350) is greater than the diameter of the positioning pile guide cylinder (210), and the top diameter of the upper connecting sleeve (360) is greater than the diameter of the positioning pile in the positioning pile guide cylinder (210).

3. A single-pile guide frame according to claim 1, characterized in that: The bottom of the guide frame (200) is surrounded by an installation frame (410) at the outer edge of the single pile installation cylinder (230). The bottom of the installation frame (410) is hinged with a hanger rod (420), and a center block (430) is fixedly connected to the middle of the hanger rod (420).

4. A single-pile guide frame according to claim 3, characterized in that: The outer side of the center block (430) is provided with an oblique cut (440), and a pusher (450) is provided at the cut (440). The surface of the pusher (450) abuts against the center block (430) through the cut (440).

5. A single-pile guide frame according to claim 4, characterized in that: The outer side of the pusher (450) is connected to a hanger (460), and the hanger (460) is slidably connected to the guide frame (200).

6. A single-pile guide frame according to claim 3, characterized in that: The bottom end of the boom (420) is fixedly connected to a contact head (470) on the side facing the single pile installation cylinder (230), and the contact head (470) is set as an arc surface.

7. A single-pile guide frame according to claim 1, characterized in that: A hydraulic cylinder (480) is provided on the guide frame (200), and the hydraulic cylinder (480) is connected to the hanger (460).

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