Efficient positioning and dismantling type pile stabilizing platform with low transfer configuration requirement

Abstract

The invention discloses an efficient positioning and dismantling type pile stabilizing platform low in transfer configuration requirement, and belongs to the technical field of offshore wind power engineering.The pile stabilizing platform comprises a pile stabilizing platform truss, an upper-layer hoop system, a lower-layer hoop system and four positioning piles, and the pile stabilizing platform truss comprises an upper-layer truss, a lower-layer truss and four positioning pile channels; the four gauge piles are inserted into the four gauge pile channels respectively, the upper layer truss is of a U-shaped structure, and when the upper layer hoop system is opened, a suspension arm of a crane ship can enter a hollow area in the U-shaped structure of the upper layer truss. A special ship does not need to be researched and developed specially for transportation, transportation can be achieved through a common floating crane ship, the transfer configuration requirement is low, particularly, the pile stabilizing platform truss of the improved structure can achieve single-ship transportation, positioning and dismantling, on-site cross operation is reduced, and the construction efficiency is improved. The work efficiency of positioning and dismantling of the pile stabilizing platform is greatly improved, and the cost of offshore wind turbine single pile construction is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power engineering, and particularly to a pile stabilizing platform. Background Art

[0002] Single-pile foundations are most widely used in offshore wind turbines. When a floating crane ship is constructing a single-pile foundation, a pile stabilizing platform is required to assist in the positioning and leveling of the pile body. The pile stabilizing platform is a truss structure. The main operation method is to fix the truss through four positioning piles at the four corners of the truss, and adjust the verticality of the foundation single pile through hydraulic cylinders arranged around the truss. The existing pile stabilizing platforms have the following deficiencies: one is that they require special ships for transportation and have high requirements for transfer configuration; the other is that the truss and positioning piles of the pile stabilizing platform are separated, and the truss and positioning piles can only be lifted separately, so there are many on-site cross-operation surfaces, not only with low work efficiency but also increasing the construction cost of the single pile of the offshore wind turbine. Therefore, it is necessary to improve the structure of the pile stabilizing platform. Summary of the Invention

[0003] The purpose of the present invention is to provide an efficient positioning and demolition type pile stabilizing platform with low requirements for transfer configuration.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: An efficient positioning and demolition type pile stabilizing platform with low requirements for transfer configuration, comprising a pile stabilizing platform truss, an upper hoop system, a lower hoop system, and four positioning piles. The pile stabilizing platform truss includes an upper truss, a lower truss, and four positioning pile channels. The four positioning piles are respectively inserted into the four positioning pile channels. The upper truss is a U-shaped structure, the lower truss is a square frame structure. A circular arc single-pile fixing groove is provided on the outer side of the lower truss. The four corners of the upper truss and the lower truss are respectively fixedly connected to four mutually parallel positioning pile channels, and the U-shaped opening of the upper truss and the circular arc single-pile fixing groove on the lower truss are located on the same side. The upper hoop system is installed at the U-shaped opening of the upper truss, and the lower hoop system is installed at the circular arc single-pile fixing groove of the lower truss; when the upper hoop system is opened, the boom of the crane ship can enter the hollow area inside the U-shaped structure of the upper truss.

[0005] Further, the upper hoop system includes 4 hoop devices for tightly fixing the single pile.

[0006] Further, the lower hoop system includes 2 hoop devices for tightly fixing the single pile together with the circular arc single-pile fixing groove.

[0007] Further, the hoop devices in the upper hoop system and the hoop devices in the lower hoop system have the same structure.

[0008] Furthermore, the hoop device includes an arc-shaped hoop and a hydraulic cylinder. The hydraulic cylinder in the hoop device of the upper hoop system is arranged on the upper truss. The outer side of the arc-shaped hoop in the hoop device of the upper hoop system is hinged to the piston rod of the hydraulic cylinder, and one end of the arc-shaped hoop is hinged to the upper truss. The hydraulic cylinder in the hoop device of the lower hoop system is arranged on the lower truss. The outer side of the arc-shaped hoop in the hoop device of the lower hoop system is hinged to the piston rod of the hydraulic cylinder, and one end of the arc-shaped hoop is hinged to the lower truss.

[0009] Furthermore, the jacking force of the hydraulic cylinder is not less than 200t.

[0010] Furthermore, the height of the upper truss is not less than 6m, and the length of the positioning pile is not less than 65m.

[0011] Furthermore, a center-of-gravity adjustment and balance floating box is provided on one side of the bottom of the stabilizing pile platform truss; an anti-settlement shoe is provided at the lower end of the positioning pile channel. By pumping water in and out of the center-of-gravity adjustment and balance floating box of the stabilizing pile platform, the center of gravity of the stabilizing pile platform is adjusted by means of the buoyancy of water, so as to avoid the inclination of the stabilizing pile platform during grounding due to eccentricity problems.

[0012] Furthermore, fixed seats are correspondingly provided at the upper end of the positioning pile channel and on both sides of the positioning pile channel. One end of the pin shaft is hinged to the fixed seat through a transverse rotating shaft, and the other end of the pin shaft extends into the positioning pile channel. Longitudinal grooves are provided on both sides of the positioning pile, and the pin shaft is located in the longitudinal grooves. The positioning pile is inserted into the positioning pile channel and hung on the pin shaft.

[0013] Furthermore, a lifting lug and four jacking and positioning devices are provided at the upper end of the positioning pile channel. The four jacking and positioning devices are evenly distributed around the positioning pile channel. The jacking and positioning device includes a positioning seat and a transverse jacking and positioning screw. The positioning seat is fixed at the upper end of the positioning pile channel, and a transverse through hole is provided on the positioning seat. One end of the transverse jacking and positioning screw passes through the transverse through hole, and the transverse jacking and positioning screw is adapted to the transverse through hole.

[0014] The beneficial effects of the present invention are as follows: (1) This application adopts a stabilizing pile platform truss with an improved structure. The upper truss of the truss adopts a U-shaped structure, and an upper hoop system that can be opened bidirectionally is installed at the opening of the U-shaped structure. When the height of the stabilizing pile platform truss exceeds the height of the crane boom, the crane boom can be lowered into the U-shaped structure, so as to realize the transportation of the stabilizing pile platform by a single ordinary floating crane. That is to say, there is no need to specifically develop special ships for transportation according to the structure of the stabilizing pile platform, and ordinary floating cranes can achieve transportation. Therefore, the requirements for transfer configuration are low. In particular, the stabilizing pile platform truss with an improved structure can realize single-ship transportation, positioning and demolition, reducing on-site cross-operation, not only greatly improving the work efficiency of stabilizing pile platform positioning and demolition, but also reducing the cost of monopile construction of offshore wind turbines.

[0015] (2) The stabilizing pile platform has the function of being integrally hoisted. The truss of the platform is connected to the positioning pile by a pin shaft. The positioning pile is inserted into the positioning pile channel and hung on the pin shaft, and its pin shaft can be turned upward and separated from the long groove on the positioning pile. Through the mutual cooperation of the two, the automatic separation and semi-automatic insertion of the pin shaft are realized, so as to realize the integral hoisting of the stabilizing pile platform, and it has the construction characteristics of high work efficiency in positioning and demolition of the stabilizing pile platform. Brief Description of the Drawings

[0016] The present invention will be further described with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, without creative work, other drawings can also be obtained according to the following drawings: Figure 1 It is a schematic structural diagram of the present invention; Figure 2 is Figure 1 a top view structural diagram of the upper truss shown; Figure 3 is Figure 1 a top view structural diagram of the lower truss shown; Figure 4 is Figure 1 a top view structural diagram of the upper end face of the positioning pile channel shown.

[0017] In the figure: 1. Upper truss; 2. Lower truss; 3. Positioning pile channel; 4. Upper hoop system; 5. Lower hoop system; 6. Positioning pile; 7. Circular arc single pile fixing groove; 8. U-shaped opening; 9. Hoop device; 10. Circular arc hoop; 11. Hydraulic cylinder; 12. Stabilizing pile platform gravity adjustment balance floating box; 13. Anti-settlement shoe; 14. Fixed seat; 15. Horizontal rotating shaft; 16. Pin shaft; 18. Lifting lug; 19. Thrust positioning device; 20. Positioning seat; 21. Horizontal thrust positioning screw; 22. Horizontal through hole. Detailed Description of the Invention

[0018] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0019] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper surface", "lower surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "forward rotation", "reverse rotation", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0020] As Figure 1 、 2 、shown in Figure 3, a highly efficient positioning and demolition type pile stabilizing platform with low requirements for transfer configuration includes a pile stabilizing platform truss, an upper hoop system 4, a lower hoop system 5, and four positioning piles 6. The pile stabilizing platform truss includes an upper truss 1, a lower truss 2, and four positioning pile channels 3. The four positioning piles 6 are respectively inserted into the four positioning pile channels 3. The upper truss 1 is a U-shaped structure, the lower truss 2 is a square frame structure, and an arc-shaped single-pile fixing groove 7 is provided on the outer side of the lower truss 2. The four corners of the upper truss 1 and the lower truss 2 are respectively fixedly connected to the four mutually parallel positioning pile channels 3, and the U-shaped opening 8 of the upper truss 1 and the arc-shaped single-pile fixing groove 7 on the lower truss 2 are located on the same side. The upper hoop system 4 is installed at the U-shaped opening of the upper truss 1, and the lower hoop system 5 is installed at the arc-shaped single-pile fixing groove 7 of the lower truss 2; when the upper hoop system 4 is opened, the boom of the crane ship can enter the hollow area inside the U-shaped structure of the upper truss. The height of the upper truss is not less than 6m, and the length of the positioning pile is not less than 65m. Since the upper hoop system that can be opened bidirectionally is installed at the opening of the U-shaped structure, when the height of the pile stabilizing platform truss exceeds the height of the boom, the boom can be lowered into the U-shaped structure, so as to realize the transportation of the pile stabilizing platform by a single ordinary floating crane ship. That is to say, there is no need to specifically develop a special ship for transportation according to the structure of the pile stabilizing platform, and an ordinary floating crane ship can achieve transportation. Therefore, the requirements for transfer configuration are low. In particular, the improved pile stabilizing platform truss can realize single-ship transportation, positioning, and demolition, reducing on-site cross-operation, not only greatly improving the work efficiency of pile stabilizing platform positioning and demolition, but also reducing the cost of single-pile construction of offshore wind turbines.

[0021] The upper hoop system 4 includes four hoop devices 9, and the four hoop devices 9 are used to tightly hold and fix a single pile. The lower hoop system 5 includes two hoop devices 9, and the two hoop devices are used to tightly hold and fix the single pile together with the arc-shaped single-pile fixing groove. The hoop devices in the upper hoop system have the same structure as the hoop devices in the lower hoop system. The hoop device 9 includes an arc-shaped hoop 10 and a hydraulic cylinder 11. The hydraulic cylinder 11 in the hoop device in the upper hoop system 4 is arranged on the upper truss 1. The outer side of the arc-shaped hoop 10 in the hoop device in the upper hoop system is hinged to the piston rod of the hydraulic cylinder 11. One end of the arc-shaped hoop 10 is hinged to the upper truss 4. The top thrust of the hydraulic cylinder is not less than 200t. Similarly, the hydraulic cylinder in the hoop device in the lower hoop system 5 is arranged on the lower truss. The outer side of the arc-shaped hoop in the hoop device in the lower hoop system is hinged to the piston rod of the hydraulic cylinder. One end of the arc-shaped hoop is hinged to the lower truss.

[0022] One side of the bottom of the pile-stabilizing platform truss is provided with a pile-stabilizing platform gravity-adjusting balance floating box 12; the lower end of the positioning pile channel 3 is provided with a sinking prevention shoe 13. By pumping water in and out of the pile-stabilizing platform gravity-adjusting balance floating box 12, the gravity of the pile-stabilizing platform is adjusted by means of the buoyancy of water, so as to avoid the inclination of the pile-stabilizing platform during bottom landing due to eccentricity problems.

[0023] As Figure 4 shown, corresponding fixing seats 14 are provided at the upper end of the positioning pile channel 3 and on both sides of the positioning pile channel. One end of a pin shaft 16 is hinged to the fixing seat 14 through a transverse rotating shaft 15. The other end of the pin shaft 16 extends into the positioning pile channel 3 and can be turned upwards. Longitudinal slots (not shown in the figure) are provided on both sides of the positioning pile 6. The pin shaft 16 is located in the longitudinal slots. The positioning pile 6 is inserted into the positioning pile channel 3 and hung on the pin shaft 16. When the positioning pile is hung on the pile-stabilizing platform truss through a bolt pin, after the pile-stabilizing platform truss reaches the seabed, at this time, the bolt pin contacts the upper end of the longitudinal slot, and this contact point is the stress point. Use a vibratory hammer to clamp the top of the positioning pile and slightly pull it upwards. At this time, the lower end of the waist hole will continuously drive the bolt pin to turn outwards. When the turning angle exceeds 90°, the fixing seat 14 limits the bolt pin. When the positioning pile 6 extends out to the seabed, use a suspension rigging to hang the truss on the positioning pile. When dismantling the pile-stabilizing platform, untie the suspension rigging, lower the pile-stabilizing platform to the seabed, use a vibratory hammer to clamp the top of the positioning pile and pull out the positioning pile upwards. When the bottom of the positioning pile exceeds the bottom of the pile-stabilizing platform truss, align the longitudinal slot with the pin shaft 16. When the two are at the same height, manually turn the pin shaft 16 from the vertical state to the horizontal state, push the pin shaft 16 into the longitudinal slot, then lower the positioning pile so that it hangs on the pin shaft 16, and then lift the pile-stabilizing platform truss and the positioning pile together onto the ship to complete the dismantling work of the pile-stabilizing platform.

[0024] The upper end of the positioning pile channel 3 is also provided with a lifting lug 18 and four jacking and positioning devices 19. The four jacking and positioning devices 19 are evenly distributed around the positioning pile channel 3. The jacking and positioning device 19 includes a positioning seat 20 and a lateral jacking and positioning screw 21. The positioning seat 20 is fixed to the upper end of the positioning pile channel 3. The positioning seat 20 is provided with a laterally penetrating screw hole 22. One end of the lateral jacking and positioning screw 21 passes through the laterally penetrating screw hole 22, and the lateral jacking and positioning screw 21 is adapted to the laterally penetrating screw hole 22. The precise positioning of the positioning pile is achieved by adjusting the lateral jacking and positioning screw 21.

[0025] Scope of application of the present invention: 1. Applicable to the pile driving of single-pile foundations within 2500t.

[0026] 2. Applicable to the pile driving of single-pile foundations in unobstructed waters within 30m water depth.

[0027] 3. Applicable to the technical requirements for the horizontal position positioning accuracy of single-pile foundations within 500m.

[0028] 4. Applicable to the technical requirements for the verticality positioning accuracy of single-pile foundations within 3‰.

[0029] In addition, without contradiction, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An efficient positioning and demolition type pile stabilizing platform with low requirements for transfer configuration, characterized in that: It includes a pile stabilizing platform truss, an upper hoop system, a lower hoop system and four positioning piles. The pile stabilizing platform truss includes an upper truss, a lower truss and four positioning pile channels. The four positioning piles are respectively inserted into the four positioning pile channels. The upper truss is of a U-shaped structure, and the lower truss is of a square frame structure. An arc-shaped single pile fixing groove is provided on the outer side of the lower truss. The four corners of the upper truss and the lower truss are respectively fixedly connected to four mutually parallel positioning pile channels, and the U-shaped opening of the upper truss and the arc-shaped single pile fixing groove on the lower truss are located on the same side. The upper hoop system is installed at the U-shaped opening of the upper truss, and the lower hoop system is installed at the arc-shaped single pile fixing groove of the lower truss; when the upper hoop system is opened, the boom of the crane can enter the hollow area inside the U-shaped structure of the upper truss.

2. The high-efficiency positioning and demolition type pile stabilizing platform with low requirements for transfer configuration according to claim 1, characterized in that: The upper hoop system includes 4 hoop devices for tightly holding and fixing a single pile.

3. The high-efficiency positioning and demolition type pile stabilizing platform with low requirements for transfer configuration according to claim 2, characterized in that: The lower hoop system includes 2 hoop devices for tightly holding and fixing a single pile together with the arc-shaped single pile fixing groove.

4. The highly efficient positioning and demolition type pile stabilizing platform with low requirements for transfer configuration according to claim 3, characterized in that: The hoop devices in the upper hoop system and the hoop devices in the lower hoop system have the same structure.

5. The high-efficiency positioning and demolition type pile stabilizing platform with low requirements for transfer configuration according to claim 4, characterized in that: The hoop device includes an arc-shaped hoop and a hydraulic cylinder. The hydraulic cylinder in the hoop device of the upper hoop system is arranged on the upper truss. The outer side of the arc-shaped hoop in the hoop device of the upper hoop system is hinged to the piston rod of the hydraulic cylinder, and one end of the arc-shaped hoop is hinged to the upper truss; the hydraulic cylinder in the hoop device of the lower hoop system is arranged on the lower truss. The outer side of the arc-shaped hoop in the hoop device of the lower hoop system is hinged to the piston rod of the hydraulic cylinder, and one end of the arc-shaped hoop is hinged to the lower truss.

6. The high-efficiency positioning and demolition type pile stabilizing platform with low requirements for transfer configuration according to claim 5, characterized in that: The jacking force of the hydraulic cylinder is not less than 200t.

7. The high-efficiency positioning and demolition type pile stabilizing platform with low requirements for transfer configuration according to claim 6, characterized in that: The height of the upper truss is not less than 6m, and the length of the positioning pile is not less than 65m.

8. The high-efficiency positioning and demolition type pile stabilizing platform with low requirements for transfer configuration according to claim 7, characterized in that: A pile stabilizing platform center of gravity adjusting and balancing floating box is provided on one side of the bottom of the pile stabilizing platform truss; a sinking prevention shoe is provided at the lower end of the positioning pile channel.

9. The high-efficiency positioning and demolition type pile stabilizing platform with low requirements for transfer configuration according to claim 8, wherein: Fixed seats are correspondingly provided at the upper end of the positioning pile channel and on both sides of the positioning pile channel. One end of a pin shaft is hinged to the fixed seat through a transverse rotating shaft, and the other end of the pin shaft extends into the positioning pile channel. Longitudinal grooves are provided on both sides of the positioning pile, and the pin shaft is located in the longitudinal grooves. The positioning pile is inserted into the positioning pile channel and hung on the pin shaft.

10. The high-efficiency positioning and demolition type pile stabilizing platform with low requirements for transfer configuration according to claim 9, characterized in that: A lifting lug and four jacking and positioning devices are provided at the upper end of the positioning pile channel. The four jacking and positioning devices are evenly distributed around the positioning pile channel. The jacking and positioning device includes a positioning seat and a transverse jacking and positioning screw. The positioning seat is fixed at the upper end of the positioning pile channel, and a transverse through hole is provided on the positioning seat. One end of the transverse jacking and positioning screw passes through the transverse through hole, and the transverse jacking and positioning screw is adapted to the transverse through hole.

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