Offshore photovoltaic floating pile stabilizing platform and positioning pile sinking method

Abstract

The invention belongs to the technical field of photovoltaic power generation, and discloses an offshore photovoltaic floating pile stabilizing platform and a positioning pile sinking method. The platform comprises a main body, and a positioning part and a pile sinking part which are arranged based on the main body; the main body comprises a rectangular frame and a plurality of supporting beams; the positioning part comprises a plurality of positioning fixing columns and a plurality of positioning sleeves; the multiple positioning fixing columns are welded and fixed to the side, close to the crane ship, of the rectangular frame at intervals and correspond to guide fixing bases on the crane ship one to one. A plurality of positioning sleeves are respectively arranged on the inner side of the rectangular frame and are welded and fixed with the supporting beams at adjacent positions; and the pile sinking part comprises a plurality of pile holding devices. The method has the technical advantages of being easy to operate and high in working efficiency when the photovoltaic station is constructed on the sea.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and in particular to a floating pile stabilization platform for offshore photovoltaics and a positioning pile sinking method. Background Art

[0002] Because under the same lighting conditions, the offshore environment has the advantages of a wide and unobstructed radiation surface, long sunshine time, and high radiation compared to the land environment, making offshore photovoltaics a new way of utilizing marine energy and developing resources. Specifically, this also leads to the fact that the power generation of offshore photovoltaic power stations is significantly higher than that of land photovoltaic power stations. Therefore, establishing high-efficiency and high-standard offshore photovoltaic power stations is of great practical significance to ensure the supply of electric energy.

[0003] In the actual practice, the construction of existing offshore photovoltaic power stations still adopts the traditional marine engineering construction method, that is, the use of bottom-mounted pile-stabilizing platforms. However, the inventors found that in the specific operation of this type of traditional method, not only is the platform large in size, heavy in weight, and the pile sinking process is cumbersome; and after the bottom-mounted pile-stabilizing platform completes the pile sinking operation of one position, it needs to be lifted back to the transport ship by a crane ship, and then moved to the next position, and the pile-stabilizing platform is placed in the designated position by the crane ship again. As a result, it has the defects of complex operation and low efficiency, which leads to a longer construction period and increased costs. What's more, the operation risk is high under severe sea conditions, and the construction of the offshore photovoltaic station cannot be successfully completed. Summary of the invention

[0004] The present invention aims to provide a floating pile stabilizing platform and a positioning pile sinking method for offshore photovoltaics, so as to improve the technical problems of complex operation and low efficiency of the existing bottom-seated pile stabilizing platform in the construction of offshore photovoltaic stations.

[0005] To achieve the above object, the present invention proposes the following technical solutions:

[0006] In a first aspect, a floating pile-stabilizing platform for offshore photovoltaics is provided, comprising a main body, and a positioning part and a pile sinking part arranged based on the main body;

[0007] The main body comprises a rectangular frame, a plurality of support beams, a plurality of first cable piles and a plurality of second cable piles; each of the support beams is staggered inside the rectangular frame, and both ends are welded and fixed to the rectangular frame;

[0008] The plurality of first cable bollards are arranged at intervals on a side of the rectangular frame close to the crane ship and are located close to the center of the side; the plurality of second cable bollards are arranged on adjacent sides of the side where the plurality of first cable bollards are located and are located close to the side;

[0009] The positioning part includes a plurality of positioning and fixing columns and a plurality of positioning sleeves; the plurality of positioning and fixing columns are welded and fixed at intervals on a side of the rectangular frame close to the lifting vessel, and are arranged one by one with the guide fixing seat on the lifting vessel; wherein the guide fixing seat includes a first guide plate, a second guide plate and a third guide plate; the first guide plate is fixed to the lifting vessel, is arranged perpendicularly to the positioning and fixing column, and is provided with a waist-shaped notch on a side close to the positioning and fixing column, the width of the waist-shaped notch is consistent with the diameter of the positioning and fixing column; the second guide plate is vertically extended upward along the arc-shaped part of the waist-shaped notch, and the third guide plate is located at the parallel part of the waist-shaped notch and extends upward, and when the positioning and fixing column is clamped and adapted with the second guide plate, the plane where the third guide plate is located is tangent to the positioning and fixing column;

[0010] A plurality of positioning sleeves are arranged on the inner side of the rectangular frame and are welded and fixed to the support beams at adjacent positions; the upper end of any positioning sleeve is provided with a plurality of position limiting fixing seats perpendicular thereto; wherein, the connecting line of any two position limiting fixing seats arranged opposite to each other passes through the center of the circle of the positioning sleeve; any position limiting fixing seat comprises a bottom plate and a collar, wherein the bottom plate is welded and fixed to the outer side wall of the positioning sleeve, and the collar is vertically welded to the bottom plate; wherein, the inner ring size of the collar is consistent with the size of the positioning pin;

[0011] The pile sinking part includes a plurality of pile grippers, which are welded and fixed at intervals on the outside of the rectangular frame; any pile gripper includes a first pile gripper and a second pile gripper; the first pile gripper and the second pile gripper are fixed to the matrix frame by rotating shafts passing through their adjacent ends at the same time, so that the first pile gripper and the second pile gripper have the freedom to rotate along the circumferential direction of the rotating shaft; the free ends of the first pile gripper and the second pile gripper are both provided with limiting rings; the upper end of the first pile gripper is provided with a plurality of first positioning blocks, and the upper end of the second pile gripper is provided with a plurality of and a second positioning block; the first positioning block and the second positioning block both include a base and a sliding plate, the base is vertically fixed to the first pile holding member or the second pile holding member, and the sliding plate is movably embedded in the base; when the free ends of the first pile holding member and the second pile holding member are closed, the limit rings respectively arranged on them are located in a coaxial position, and the connecting line where the first positioning block and the second positioning block located in relative positions pass through the center of the closed structure; and the sliding plates on each base can be slid simultaneously along the radial direction of the closed structure to adjust the size of the circumscribed circle of the closed structure.

[0012] Furthermore, it comprises a walkway; the walkway is formed by a steel mesh plate and is adapted to the positions of the positioning part and the pile driving part.

[0013] Furthermore, along the sliding direction of the sliding plate, a number of through holes are correspondingly provided on the base and the sliding plate for inserting limit pins, thereby satisfying the pile driving operation of steel pipe piles with pile diameters of 800mm, 850mm, 1200mm, 1300mm, and 1350mm respectively.

[0014] Furthermore, the diameter of the waist-shaped notch in the guide fixing seat on the side close to the positioning fixing column is larger than the diameter of the positioning fixing column.

[0015] Furthermore, the outer side walls of the first pile holding member and the second pile holding member are both provided with fixing rods, and the free ends of the fixing rods are provided with fixing rings; the main body is provided with fixing columns; the fixing rods are sleeved and matched with the fixing columns through the fixing rings.

[0016] Furthermore, there are four positioning sleeves, which are arranged at the top corners of the rectangular frame.

[0017] Furthermore, there are four pile grippers, which are arranged at both ends of the long side of the rectangular frame.

[0018] Furthermore, there are two positioning and fixing columns, which are fixed to a long side of the rectangular frame by welding at intervals.

[0019] In a second aspect, a method for positioning and sinking piles for offshore photovoltaics is provided, which is based on the floating pile stabilization platform and comprises:

[0020] The crane ship is towed to the construction site and fixed, and the first transport ship transports the floating pile stabilizing platform to the site and berths the crane ship;

[0021] The crane ship hoists the floating pile-stabilizing platform to the side of the crane ship where the guide fixing seat is arranged and lowers it to the water surface, and after the positioning fixing column is docked with the first guide plate in the guide fixing seat, a baffle is inserted between the second guide plate and the third guide plate to rigidly connect the floating pile-stabilizing platform with the crane ship;

[0022] The crane ship is provided with two cables at the front and rear to a first cable pile and a second cable pile of the floating pile-stabilized platform, and each cable is placed in a relaxed state;

[0023] The crane ship lifts the positioning piles, inserts the positioning piles into the positioning sleeves respectively and lowers them to the mud surface; after the positioning piles are stable, the positioning piles are driven diagonally by a vibrating hammer and then the positioning pins are inserted from the limit fixing seat; wherein, the positioning piles are provided with positioning holes corresponding to the limit fixing seat;

[0024] The rigid connection between the crane ship and the floating pile stabilizing platform is released, the first pile holding member and the second pile holding member are rotated to close their free ends, and the fixing pins are inserted into the limiting rings to realize the rigid connection between the first pile holding member and the second pile holding member to form a pile holding device with a closed structure; the sliding plates are adjusted based on the sliding of the steel pipe pile to be sunk so that the diameter of the circumscribed circle of the pile holding device is consistent with the column diameter of the steel pipe pile;

[0025] The second transport ship transports the steel pipe piles to the point and berths at the crane ship, and hoists each steel pipe pile to each pile gripper, and each steel pipe pile sinks into the mud by its own weight from the dragon mouth of the pile gripper, and performs diagonal pile sinking operation on the steel pipe pile by a vibrating hammer;

[0026] After each steel pipe pile is sunk, each positioning pin is pulled out and each positioning pile is pulled out by a crane ship, and each fixing pin is pulled out to open each pile gripper;

[0027] The position of the crane ship and the length of the cable are adjusted so that the extension line of the cable on the traction side is located inside the center of the floating pile stabilizing platform; the crane ship moves and drives the floating pile stabilizing platform to the next construction position.

[0028] Furthermore, the sliding adjustment of each sliding plate based on the steel pipe pile to be sunk so that the diameter of the circumscribed circle of the pile gripper is consistent with the column diameter of the steel pipe pile; comprises:

[0029] The limiting latches are inserted into the through holes on the base and the sliding plates at overlapping positions to fix the sliding plates.

[0030] Beneficial effects:

[0031] It can be seen from the above technical solutions that the technical solution of the present invention provides a floating stable pile platform for offshore photovoltaics to improve the technical defects of the existing bottom-mounted stable pile platform in the construction of offshore photovoltaic stations, such as complex operation and low efficiency.

[0032] When sinking piles, it is only necessary to bring the floating pile stabilizing platform close to the crane ship, and the floating pile stabilizing platform can be bound to the crane ship through the snap-fitting between the positioning and fixing columns and the guide fixing seats to avoid displacement of the floating pile stabilizing platform; then, insert the positioning pile into the positioning sleeve to further position and fix the floating pile stabilizing platform; finally, close the pile gripper, and after adjusting the size of its circumscribed circle through each sliding plate to be consistent with the steel pipe pile to be inserted, each steel pipe pile can be inserted. After the pile sinking is completed at the current position, it is only necessary to adjust the crane ship position and the length of the cable so that the extension line of the traction side cable is located on the inner side of the center of the floating pile stabilizing platform. Then, the crane ship can be shifted to drive the floating pile stabilizing platform to the next position for subsequent construction operations. It can be seen that the platform described in this technical solution has the technical advantages of simple overall process and high efficiency of pile sinking operations.

[0033] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, may be considered to be part of the inventive subject matter of the present disclosure, provided such concepts are not mutually inconsistent.

[0034] The foregoing and other aspects, embodiments and features of the present invention can be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of the exemplary embodiments, will be apparent from the following description or learned from the practice of the specific embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For clarity, not every component is labeled in every figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, in which:

[0036] Figure 1 A top view of the floating pile-stabilized platform for offshore photovoltaics described in this embodiment;

[0037] Figure 2 A side view of the floating pile-stabilized platform for offshore photovoltaics described in this embodiment;

[0038] Figure 3 It is a schematic diagram of the structure of the positioning fixing column and the guide fixing seat;

[0039] Figure 4 It is a schematic diagram of the structure of the positioning pile and the positioning sleeve;

[0040] Figure 5 It is a structural schematic diagram of the cooperation between the steel pipe pile and the pile gripper. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meaning understood by people with general skills in the field to which the present invention belongs.

[0042] The words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular form of "a", "an" or "the" and other similar words do not indicate a quantitative limitation, but rather indicate the presence of at least one. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before "include" or "comprise" cover the features, wholes, steps, operations, elements and / or components listed after "include" or "comprise", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] The use of traditional bottom-seated pile stabilizing platforms for the construction of offshore photovoltaic power stations has the following defects: not only is the platform large in size and heavy in weight, but the pile sinking process is cumbersome; and after completing the pile sinking operation at one position, the bottom-seated pile stabilizing platform needs to be lifted back to the transport ship by a crane ship, and then moved to the next position, and the pile stabilizing platform is placed in the designated position by the crane ship again. It also has the defects of complex operation and low efficiency, which leads to a prolonged construction period and increased costs, especially in severe sea conditions. Based on this, this embodiment aims to provide a floating pile stabilizing platform for offshore photovoltaics to overcome the above technical defects.

[0044] The floating pile-stabilizing platform for offshore photovoltaics described in this embodiment will be described in detail below with reference to the accompanying drawings.

[0045] like Figure 1-5 As shown, the platform comprises a main body 1, a positioning part and a pile sinking part arranged based on the main body.

[0046] The main body 1 comprises a rectangular frame 1.1, a plurality of support beams 1.2, a plurality of first bollards 1.3 and a plurality of second bollards 1.4.

[0047] Specifically, each of the support beams 1.2 is staggeredly located inside the rectangular frame 1.1, and both ends are welded and fixed to the rectangular frame 1.1.

[0048] The first bollards 1.3 are arranged at intervals on one side of the rectangular frame 1.1 close to the crane ship and are located close to the center of the side; the second bollards 1.4 are arranged on the adjacent side of the first bollards and are located close to the side.

[0049] The positioning part includes a plurality of positioning fixing columns 2 and a plurality of positioning sleeves 3 .

[0050] Specifically, a plurality of positioning and fixing columns 2 are welded and fixed at intervals on the side of the rectangular frame 1.1 close to the crane ship, and are arranged one by one with the guide fixing seat 4 on the crane ship. In order to improve the reliability of the subsequent rigid connection between the two, simplify the design and improve the connection efficiency. A total of two positioning and fixing columns are set, which are welded and fixed at intervals on a long side of the rectangular frame. Furthermore, the guide fixing seat 4 includes a first guide plate, a second guide plate and a third guide plate. The first guide plate is fixed on the crane ship, and is arranged vertically with the positioning and fixing column 2, and a waist-shaped notch is provided on the side close to the positioning and fixing column 2, and the width of the waist-shaped notch is consistent with the diameter of the positioning and fixing column. The second guide plate is vertically extended upward along the arc portion of the waist-shaped notch, and the third guide plate is located at the parallel portion of the waist-shaped notch and extends upward. At the same time, when the positioning and fixing column is clamped and adapted with the second guide plate, the plane where the third guide plate is located is tangent to the positioning and fixing column.

[0051] In order to facilitate the clamping and fixing of the positioning and fixing column 2 and the guide fixing seat 4, a waist-shaped notch is provided in the guide fixing seat 4, and the diameter of the notch close to the positioning and fixing column 2 is larger than the diameter of the positioning and fixing column 4. That is, the waist-shaped notch is set as a wide-mouth structure, and at this time, the clamping can be completed even if the positioning and fixing column 2 is not completely aligned with the waist-shaped notch.

[0052] A plurality of positioning sleeves 3 are arranged on the inner side of the rectangular frame 1.1 and are welded and fixed to the support beams 1.2 at adjacent positions. The upper end of any positioning sleeve 3 is provided with a plurality of position limiting fixing seats 5 perpendicular thereto; wherein, the connecting line of any two position limiting fixing seats 5 arranged opposite to each other passes through the center of the circle of the positioning sleeve 3; any position limiting fixing seat 5 comprises a bottom plate 5.1 and a collar 5.2, wherein the bottom plate 5.1 is welded and fixed to the outer side wall of the positioning sleeve 3, and the collar 5.2 is vertically welded to the bottom plate 5.1; wherein, the inner ring size of the collar 5.2 is consistent with the size of the positioning pin 6.

[0053] In order to improve the stability of positioning and fixing, four positioning sleeves 3 are provided, which are arranged at the top corners of the rectangular frame 1.1.

[0054] As for the pile sinking part, it includes a plurality of pile grippers 7. The pile grippers 7 are welded and fixed at intervals on the outside of the rectangular frame 1.1. Specifically, there are four pile grippers in this embodiment, which are arranged at both ends of the long side of the rectangular frame 11. Any pile gripper 7 includes a first pile gripper 7.1 and a second pile gripper 7.2. The first pile gripper 7.1 and the second pile gripper 7.2 are fixed to the matrix frame 1.1 by a rotating shaft passing through their adjacent ends at the same time, so that the first pile gripper 7.1 and the second pile gripper 7.2 have the freedom to rotate along the circumferential direction of the rotating shaft. The free ends of the first pile gripper 7.1 and the second pile gripper 7.2 are both provided with limit rings. The upper end of the first pile gripper 7.1 is provided with a plurality of first positioning blocks 7.3, and the upper end of the second pile gripper 7.2 is provided with a plurality of second positioning blocks 7.4. The first positioning block 7.3 and the second positioning block 7.4 both include a base and a sliding plate, the base is vertically fixed to the first pile holding member 7.1 or the second pile holding member 7.2, and the sliding plate is movably embedded in the base. When the free ends of the first pile holding member 7.1 and the second pile holding member 7.2 are closed, the limit rings respectively arranged on them are located in a coaxial position, and the connecting line of the first positioning block and the second positioning block located at the relative position passes through the center of the closed structure; and the sliding plates on each base can be simultaneously slid along the radial direction of the closed structure to adjust the size of the circumscribed circle of the closed structure.

[0055] As a further implementation method, in order to meet the operation requirements of steel pipe piles of various sizes and reduce the difficulty of operation, a plurality of through holes are provided on the base and the sliding plate along the sliding direction of the sliding plate for inserting limit pins, thereby meeting the pile sinking operation of steel pipe piles 8 with pile diameters of 800 mm, 850 mm, 1200 mm, 1300 mm, and 1350 mm.

[0056] In order to prevent the first pile holding member 7.1 and the second pile holding member 7.2 from shaking and affecting their service life when the floating pile stabilizing platform moves or the pile holding device 7 is opened, a fixing rod 7.5 is provided on the outer wall of the first pile holding member 7.1 and the second pile holding member 7.2, and a fixing ring is provided at the free end of the fixing rod 7.5; a fixing column 1.5 is provided on the main body 1; the fixing rod 7.5 is sleeved and matched with the fixing column 1.5 through the fixing ring. At this time, when the pile holding device 7 is opened, the first pile holding member 7.1 and the second pile holding member 7.2 can be fixed to the main body 1 to prevent shaking.

[0057] At this time, in the specific implementation, first, when sinking piles, it is only necessary to bring the floating pile stabilizing platform close to the crane ship, and the floating pile stabilizing platform can be bound to the crane ship through the clamping cooperation between the positioning and fixing column 2 and the guide fixing seat 4 to avoid displacement of the floating pile stabilizing platform. Then, the positioning pile 9 is inserted into the positioning sleeve 3 to realize the floating pile stabilizing platform to further position and fix it. Finally, the pile gripper 7 is closed, and after adjusting the size of its circumscribed circle to be consistent with the steel pipe pile 8 to be inserted through each sliding plate, each steel pipe pile 8 can be inserted. After the pile sinking is completed at the current position, it is only necessary to adjust the crane ship position and the length of the cable to be pulled on the first cable pile 1.3 and the second cable pile 1.4, so that the extension line of the cable on the pulling side is located on the inner side of the center of the floating pile stabilizing platform, and then the crane ship can be shifted to drive the floating stabilizing platform to the next position for subsequent construction operations. Thereby, the pile sinking operation based on this platform has the technical advantages of simple overall process and high efficiency.

[0058] In order to facilitate the pile sinking operation, the platform further includes a walkway 10. The walkway 10 is composed of a steel mesh plate and is adapted to the positions of the positioning part and the pile sinking part. At this time, when manual operation is required, personnel can move on the walkway 10 to reach the positioning part or the pile sinking part for relevant inspection and operation.

[0059] Based on this, this embodiment also provides a pile sinking method based on the above floating pile stabilizing platform. The following is a detailed introduction to the positioning pile sinking method for offshore photovoltaics described in this embodiment.

[0060] Specifically, the method includes:

[0061] Step S102: the crane ship is towed to the construction site and fixed, and the first transport ship transports the floating pile stabilizing platform to the site and berths the crane ship.

[0062] Specifically, after the crane ship is towed to the construction site, the anchor boat will drop anchor, with a total of 4 cross anchors in front and back.

[0063] Step S104: The crane vessel hoists the floating pile stabilizing platform to the side of the crane vessel where the guide fixing seat is set and lowers it to the water surface, and after the positioning fixing column is docked with the first guide plate in the guide fixing seat, a baffle is inserted between the second guide plate and the third guide plate to rigidly connect the floating pile stabilizing platform to the crane vessel.

[0064] Step S106: The crane vessel respectively carries two cables at the front and rear ends to a first cable pile and a second cable pile of the floating pile-stabilized platform, and each cable is in a relaxed state.

[0065] At this time, it is convenient to move the floating pile stabilizing platform when constructing the next machine position, and it is convenient for the crane ship to drive the floating pile stabilizing platform by twisting the anchor to perform precise plane positioning.

[0066] Step S108, the crane vessel lifts the positioning piles, inserts the positioning piles into the positioning sleeves respectively and lowers them to the mud surface; after the positioning piles are stable, the positioning piles are driven diagonally by a vibrating hammer and the positioning pins are inserted into the self-limiting fixing seat.

[0067] Wherein, the positioning pile is provided with a positioning hole corresponding to the limiting fixing seat.

[0068] Step S110, releasing the rigid connection between the crane vessel and the floating pile stabilizing platform, rotating the first pile holding member and the second pile holding member to close their free ends, and inserting the fixing pins into each limiting ring to realize the rigid connection between the first pile holding member and the second pile holding member to form a pile holding device with a closed structure; adjusting each sliding plate based on the sliding of the steel pipe pile to be sunk so that the diameter of the circumscribed circle of the pile holding device is consistent with the column diameter of the steel pipe pile.

[0069] As a further implementation method, in order to fix the adjusted closing size and meet the requirements of steel pipe piles of various sizes, after step S110, the following steps are further included:

[0070] Step S111 , inserting the limit pins into the through holes on the base and the sliding plates at overlapping positions to fix the sliding plates.

[0071] Step S112: The second transport ship transports the steel pipe piles to the point and berths at the crane ship, and lifts each steel pipe pile to each pile gripper. Each steel pipe pile enters the mouth of the pile gripper and sinks into the mud by its own weight, and a vibrating hammer is used to diagonally sink the steel pipe piles.

[0072] Specifically, the crane hooks the steel pipe pile, lifts both ends of the steel pipe pile, unhooks one end after the steel pipe pile turns over, and lifts the steel pipe pile to the dragon mouth through the other end to sink it into the mud by its own weight. After the first steel pipe pile sinks into the mud by its own weight, unhooks it, and completes the remaining steel pipe pile insertion operations diagonally. After the lifting vibration hammer tightens the cone pipe special fixture, the whole is lifted to insert the cone pipe special fixture into the steel pipe pile, and then the hydraulic system is controlled to make the support plate in the cone pipe special fixture tighten the inner wall of the steel pipe pile, and the steel pipe pile can be vibrated and sunk.

[0073] Step S114: After the steel pipe piles are sunk, the positioning pins are pulled out and the positioning piles are pulled out by the crane ship, and the fixing pins are pulled out to open the pile grippers.

[0074] Step S116, adjusting the position of the crane ship and the length of the cable so that the extension line of the cable on the traction side is located inside the center of the floating pile stabilizing platform; the crane ship moves and drives the floating pile stabilizing platform to the next construction position.

[0075] Since the method is carried out based on the platform, it has the technical advantages of simple overall process and high efficiency in actual operation, thereby meeting the needs for building an offshore photovoltaic station.

[0076] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A floating pile-stabilized platform for offshore photovoltaics, characterized in that: It comprises a main body, and a positioning part and a pile sinking part arranged based on the main body; The main body comprises a rectangular frame, a plurality of support beams, a plurality of first cable piles and a plurality of second cable piles; each of the support beams is staggered inside the rectangular frame, and both ends are welded and fixed to the rectangular frame; The plurality of first cable bollards are arranged at intervals on a side of the rectangular frame close to the crane ship and are located close to the center of the side; the plurality of second cable bollards are arranged on adjacent sides of the side where the plurality of first cable bollards are located and are located close to the side; The positioning part includes a plurality of positioning and fixing columns and a plurality of positioning sleeves; the plurality of positioning and fixing columns are welded and fixed at intervals on a side of the rectangular frame close to the lifting vessel, and are arranged one by one with the guide fixing seat on the lifting vessel; wherein the guide fixing seat includes a first guide plate, a second guide plate and a third guide plate; the first guide plate is fixed to the lifting vessel, is arranged perpendicularly to the positioning and fixing column, and is provided with a waist-shaped notch on a side close to the positioning and fixing column, the width of the waist-shaped notch is consistent with the diameter of the positioning and fixing column; the second guide plate is vertically extended upward along the arc-shaped part of the waist-shaped notch, and the third guide plate is located at the parallel part of the waist-shaped notch and extends upward, and when the positioning and fixing column is clamped and adapted with the second guide plate, the plane where the third guide plate is located is tangent to the positioning and fixing column; A plurality of positioning sleeves are arranged on the inner side of the rectangular frame and are welded and fixed to the support beams at adjacent positions; the upper end of any positioning sleeve is provided with a plurality of position limiting fixing seats perpendicular thereto; wherein, the connecting line of any two position limiting fixing seats arranged opposite to each other passes through the center of the circle of the positioning sleeve; any position limiting fixing seat comprises a bottom plate and a collar, wherein the bottom plate is welded and fixed to the outer side wall of the positioning sleeve, and the collar is vertically welded to the bottom plate; wherein, the inner ring size of the collar is consistent with the size of the positioning pin; The pile sinking part includes a plurality of pile grippers, which are welded and fixed at intervals on the outside of the rectangular frame; any pile gripper includes a first pile gripper and a second pile gripper; the first pile gripper and the second pile gripper are fixed to the matrix frame by rotating shafts passing through their adjacent ends at the same time, so that the first pile gripper and the second pile gripper have the freedom to rotate along the circumferential direction of the rotating shaft; the free ends of the first pile gripper and the second pile gripper are both provided with limiting rings; the upper end of the first pile gripper is provided with a plurality of first positioning blocks, and the upper end of the second pile gripper is provided with a plurality of and a second positioning block; the first positioning block and the second positioning block both include a base and a sliding plate, the base is vertically fixed to the first pile holding member or the second pile holding member, and the sliding plate is movably embedded in the base; when the free ends of the first pile holding member and the second pile holding member are closed, the limit rings respectively arranged on them are located in a coaxial position, and the connecting line where the first positioning block and the second positioning block located in relative positions pass through the center of the closed structure; and the sliding plates on each base can be slid simultaneously along the radial direction of the closed structure to adjust the size of the circumscribed circle of the closed structure.

2. The floating pile-stabilized platform for offshore photovoltaics according to claim 1, characterized in that: It comprises a walkway; the walkway is composed of a steel mesh plate and is adapted to the positions of the positioning part and the pile sinking part.

3. The floating pile-stabilized platform for offshore photovoltaics according to claim 1, characterized in that: Along the sliding direction of the sliding plate, a plurality of through holes are correspondingly provided on the base and the sliding plate for inserting limit pins, thereby satisfying the pile sinking operation of steel pipe piles with pile diameters of 800mm, 850mm, 1200mm, 1300mm, and 1350mm respectively.

4. The floating pile-stabilized platform for offshore photovoltaics according to claim 1, characterized in that: The waist-shaped notch in the guide fixing seat has a diameter larger than the diameter of the positioning fixing column on the side close to the positioning fixing column.

5. The floating pile-stabilized platform for offshore photovoltaics according to claim 1, characterized in that: The outer side walls of the first pile holding member and the second pile holding member are both provided with fixing rods, and the free ends of the fixing rods are provided with fixing rings; the main body is provided with fixing columns; the fixing rods are sleeved and matched with the fixing columns through the fixing rings.

6. The floating pile-stabilized platform for offshore photovoltaics according to claim 1, characterized in that: There are four positioning sleeves in total, which are arranged at the top corners of the rectangular frame.

7. The floating pile-stabilized platform for offshore photovoltaics according to claim 1, characterized in that: There are four pile grippers in total, which are arranged at two ends of the long side of the rectangular frame.

8. The floating pile-stabilized platform for offshore photovoltaics according to claim 1, characterized in that: There are two positioning and fixing columns, which are fixed on a long side of the rectangular frame by welding at intervals.

9. A method for positioning piles for offshore photovoltaics, characterized in that: Based on the floating pile stabilization platform of claim 1, the method comprises: The crane ship is towed to the construction site and fixed, and the first transport ship transports the floating pile stabilizing platform to the site and berths the crane ship; The crane ship hoists the floating pile-stabilizing platform to the side of the crane ship where the guide fixing seat is arranged and lowers it to the water surface, and after the positioning fixing column is docked with the first guide plate in the guide fixing seat, a baffle is inserted between the second guide plate and the third guide plate to rigidly connect the floating pile-stabilizing platform with the crane ship; The crane ship is provided with two cables at the front and rear to a first cable pile and a second cable pile of the floating pile-stabilized platform, and each cable is placed in a relaxed state; The crane ship lifts the positioning piles, inserts the positioning piles into the positioning sleeves respectively and lowers them to the mud surface; after the positioning piles are stable, the positioning piles are driven diagonally by a vibrating hammer and then the positioning pins are inserted from the limit fixing seat; wherein, the positioning piles are provided with positioning holes corresponding to the limit fixing seat; The rigid connection between the crane ship and the floating pile stabilizing platform is released, the first pile holding member and the second pile holding member are rotated to close their free ends, and the fixing pins are inserted into the limiting rings to realize the rigid connection between the first pile holding member and the second pile holding member to form a pile holding device with a closed structure; the sliding plates are adjusted based on the sliding of the steel pipe pile to be sunk so that the diameter of the circumscribed circle of the pile holding device is consistent with the column diameter of the steel pipe pile; The second transport ship transports the steel pipe piles to the point and berths at the crane ship, and hoists each steel pipe pile to each pile gripper, and each steel pipe pile sinks into the mud by its own weight from the dragon mouth of the pile gripper, and performs diagonal pile sinking operation on the steel pipe pile by a vibrating hammer; After each steel pipe pile is sunk, each positioning pin is pulled out and each positioning pile is pulled out by a crane ship, and each fixing pin is pulled out to open each pile gripper; The position of the crane ship and the length of the cable are adjusted so that the extension line of the cable on the traction side is located inside the center of the floating pile stabilizing platform; the crane ship moves and drives the floating pile stabilizing platform to the next construction position.

10. The method for positioning and sinking piles for offshore photovoltaics according to claim 9, characterized in that: After the sliding plates are adjusted based on the sliding of the steel pipe pile to be sunk so that the diameter of the circumscribed circle of the pile gripper is consistent with the column diameter of the steel pipe pile; it includes: The limiting latches are inserted into the through holes on the base and the sliding plates at overlapping positions to fix the sliding plates.

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