A rotating retractable offshore photovoltaic support stacking fixture

Abstract

This utility model discloses a rotary retractable offshore photovoltaic (PV) support stacking fixture, which includes a steel foundation, a steel pipe column assembly, and multiple PV support systems arranged sequentially and at intervals on the steel pipe column assembly from bottom to top. The steel foundation is horizontally arranged, and the multiple steel pipe columns of the steel pipe column assembly are vertically arranged and evenly distributed and fixed on the steel foundation along the circumference. Each PV support system includes multiple horizontally arranged legs arranged along the circumference of the steel pipe column assembly. Each leg has a leg support or leg diagonal brace at its bottom, and the outer end of each leg has a leg tray that can engage with the bottom bolt ball of the offshore PV support. The legs of the bottom PV support system are radially fixed to each steel pipe column, and the legs of the remaining PV support systems and their lower leg diagonal braces are rotatably sleeved on the steel pipe columns through sleeves. This stacking fixture and its barge transportation method can realize the transportation of multiple PV supports in one operation, with high construction efficiency and low cost.

Description

Technical Field

[0001] This utility model relates to the field of offshore photovoltaic construction technology, and in particular to a rotary retractable offshore photovoltaic support stacking tooling. Background Technology

[0002] Currently, my country's offshore photovoltaic (PV) industry chain is developing rapidly and has already reached a considerable scale, making it an important source of clean energy for the future. Offshore PV refers to photovoltaic power stations installed on the sea surface, typically with either floating or pile-based structures. Pile-based offshore PV systems fix the photovoltaic supports to the sea using piles. The characteristics of this type of PV power generation include: 1) open sea surface with minimal shading, resulting in high power generation efficiency; 2) no need to occupy land resources, making it suitable for use in areas with limited land resources; and 3) integration with fisheries, aquaculture, and other industries, achieving multi-purpose comprehensive utilization.

[0003] Currently, offshore photovoltaic (PV) support structures are assembled into truss or space frame structures using lower chords, upper chords, and diagonal braces, and then installed at sea. PV panels are then mounted on these supports to complete the construction. Due to limited construction windows and high operational difficulty at sea, the supports are often assembled on land and transported to the construction site by barge, where they are installed by crane vessels. However, the large number of support components and their overall size and weight make stacking difficult, often requiring a single barge to transport each support set. Therefore, when the transport distance is long, the cost of the barge and crane is extremely high, resulting in significant resource waste. Based on this, it is necessary to design a tooling structure that can improve the efficiency of barge transportation, optimize resource utilization, and reduce barge transportation costs. Utility Model Content

[0004] The purpose of this invention is to provide a rotary retractable marine photovoltaic support stacking fixture that solves the above-mentioned technical problems.

[0005] Therefore, the technical solution of this utility model is as follows:

[0006] A rotary retractable offshore photovoltaic (PV) support stacking fixture includes a steel foundation, a steel pipe column assembly, and a first PV support system, a second PV support system, ..., and an Nth PV support system sequentially spaced from bottom to top on the steel pipe column assembly. The spacing between adjacent PV support systems is greater than the height of the offshore PV support structure. The steel foundation is horizontally fixed to the barge deck. The steel pipe column assembly includes multiple vertically arranged steel pipe columns spaced circumferentially and fixed to the steel foundation. In the multiple PV support systems, the first PV support system includes multiple horizontally arranged first legs, radially arranged along the circumference of the steel pipe column assembly, with their inner ends fixed to the bottom outer walls of the multiple steel pipe columns. The multiple first legs support the lower outer ends of each vertically arranged first leg, with their two ends fixed to the first leg and... On the barge deck; a first leg tray is fixed to the top surface of the outer end of each first leg, with its concave surface facing upwards and engaging with multiple bolt balls at the bottom of the offshore photovoltaic support; the second photovoltaic support system includes multiple horizontally arranged second legs, which are arranged along the circumference of the steel pipe column group, and have sleeves on their inner ends, allowing the multiple second legs to be rotatably fitted onto the outer side of each steel pipe column; multiple first leg diagonal braces are respectively arranged diagonally below each second leg, with their top ends fixed to the outer ends of adjacent second legs, and their bottom ends having sleeves that are rotatably fitted onto the outer side of adjacent steel pipe columns, so that the overall structure formed by each second leg and the first leg diagonal brace below it can rotate to the space between the two adjacent steel pipe columns, or rotate to the outer side of the steel pipe columns and be arranged radially; other photovoltaic support systems have the same structure as the second photovoltaic support system.

[0007] Furthermore, the number N of photovoltaic support systems can be 3, 4, 5, or 6.

[0008] Furthermore, the steel foundation adopts a grid-shaped or cross-shaped frame composed of multiple steel sections; the number of steel pipe columns in the steel pipe column group is at least three.

[0009] Furthermore, the steel pipe columns are made of equal diameter or have a lower diameter greater than their upper diameter; multiple steel pipe columns have the same height, and their height is adapted to the total height of multiple offshore photovoltaic supports that are transported in batches and stacked at intervals.

[0010] Furthermore, multiple inter-column supports are installed between each pair of adjacent steel pipe columns. The inter-column supports include horizontal braces and diagonal braces, and the two are installed alternately.

[0011] Furthermore, in the second photovoltaic support system and the other photovoltaic support systems above it, a limiting plate is fitted and fixed at the position on each steel pipe column where each leg and each leg brace is installed, so that the bottom end of the sleeve set on the inner end of each leg and each leg brace abuts against the top surface of the limiting plate for limiting. On the top surface of each leg and the limiting plate below it, and on the top surface of each leg brace and the limiting plate below it, a limiting plate assembly is also set. The limiting plate assembly consists of two vertically set limiting plates, which are fixed on the top surface of the limiting plate and the bottom end side wall of the sleeve, respectively. When the leg and the leg brace rotate synchronously to the outside of the steel pipe column and are set in a radial pattern, the limiting plates on the inner end sleeves of the two plates abut against the limiting plates on the limiting plate below them, thus confirming that the rotation is in place.

[0012] Furthermore, the limiting plate adopts a magnetic limiting plate, and the two limiting plates located on the sleeve and the limiting plate can be connected by magnetic attraction, so that the outrigger and the lower outrigger diagonal brace can be temporarily fixed to the outside of the steel pipe column and arranged radially.

[0013] Furthermore, in the second photovoltaic support system and the other photovoltaic support systems above it, each leg adopts a telescopic structure, with the top of each leg's diagonal brace fixed to the outer end of the fixed part on the leg above it that does not extend or retract, and each leg's tray fixed to the outer end of the telescopic movable part.

[0014] Compared with existing technologies, this rotary retractable offshore photovoltaic (PV) support stacking fixture has a simple design and is easy to operate. The fixture extends vertically from the deck to the designated stacking height by sequentially installing a first, second, and third PV support system on the steel pipe pile assembly from bottom to top. Multiple PV supports can be installed by utilizing the pre-reserved photovoltaic panel spaces on the offshore PV support structure, and are then assembled in conjunction with each PV support system. The barge transportation method using this stacking fixture allows for the transport of multiple PV supports in a single operation. Furthermore, in practical applications, it eliminates the need to assemble and disassemble the fixture for each layer of the grid structure, significantly saving time on land loading and offshore installation, improving construction efficiency, and reducing construction costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a stacked tooling for fixing four marine photovoltaic supports on the deck of a barge in an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the offshore photovoltaic support stacking fixture in the rotation and retraction state in an embodiment of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the offshore photovoltaic support stacking fixture in the rotating support state in an embodiment of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the first photovoltaic support system of the offshore photovoltaic bracket stacking fixture in an embodiment of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the second photovoltaic support system of the offshore photovoltaic bracket stacking fixture in an embodiment of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the first layer of marine photovoltaic support after installation based on four stacked marine photovoltaic support fixtures in an embodiment of this utility model.

[0021] Figure 7 This is a schematic diagram of the structure of a two-layer marine photovoltaic support system installed using a stacking fixture with four marine photovoltaic supports in an embodiment of this utility model.

[0022] Figure 8 This is a schematic diagram of the structure of the third layer of marine photovoltaic support structure before installation, using a four-piece stacking fixture in an embodiment of this utility model.

[0023] Figure 9 This is a schematic diagram of a three-layer marine photovoltaic support structure installed using a stacking fixture for four marine photovoltaic supports in an embodiment of this utility model.

[0024] Figure 10 This is a side view of a three-layer marine photovoltaic support structure installed using a stacking fixture with four marine photovoltaic supports in an embodiment of this utility model. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the following embodiments are by no means intended to limit the present invention.

[0026] See Figures 1-10The rotary retractable offshore photovoltaic support stacking tooling is suitable for using barge 1 to transport offshore photovoltaic support 2 in batches; wherein, the offshore photovoltaic support 2 is a large-size structural support, which is pre-assembled on land and then transported to the designated construction location at sea via barge 1. In this embodiment, the offshore photovoltaic support 2 includes photovoltaic modules, a support truss, and connecting legs arranged sequentially from top to bottom. The photovoltaic modules consist of several photovoltaic panels 2-4, which are laid flat and fixed to the top surface of the support truss via connecting components. The support truss includes a frame-type upper support surface formed by splicing several upper chords 2-3, and a frame-type lower support surface formed by splicing several lower chords 2-1. The upper support surface is positioned parallel to the lower support surface directly above it, and the two are connected and fixed into a truss-type integral structure by several diagonal braces 2-2. Specifically, the lower chords 2-1 and diagonal braces 2-2, as well as the lower chords 2-1 and diagonal braces 2-2, are connected by bolt balls 2-5 to ensure connection strength. Four connecting legs are provided, evenly distributed and fixed at the bottom of the support truss for insertion and fixing to the offshore steel pipe pile foundation.

[0027] Based on this, since multiple bolt balls 2-5 are evenly distributed on the bottom surface of the marine photovoltaic support 2, and the bolt balls 2-5 are arranged to protrude downward from the lower chord 2-1, the marine photovoltaic support 2 can be stably installed on the deck of the barge 1 by means of multiple tooling arranged circumferentially at its bottom, and the tooling being designed with corresponding structures that can support and hold the bottom of several bolt balls 2-5.

[0028] See Figure 2 and Figure 3 The rotary retractable offshore photovoltaic (PV) support stacking fixture specifically includes a steel foundation, a steel pipe column assembly, and a first, second, and third PV support system sequentially mounted on the steel pipe column assembly from bottom to top. The steel foundation is used to fix the fixture to the barge deck. The steel pipe column assembly consists of four steel pipe columns 3-5, allowing the fixture structure to extend vertically upwards from the barge deck to the designated stacking height. The first, second, and third PV support systems cooperate with the three offshore PV supports 2 to be transported in the same batch, and are sequentially and spaced upwards on the barge deck, enabling the barge to complete a one-time batch transport of three offshore PV supports 2.

[0029] The steel foundation is a grid-shaped frame consisting of multiple steel sections 3-4 welded and fixed together. The grid-shaped frame is horizontally arranged. In practical applications, the bottom surface of the grid-shaped frame is welded to a designated position on the deck of barge 1.

[0030] Four steel pipe columns 3-5 are vertically arranged and fixed at their bottom ends at the four intersections of the grid-shaped frame, making the radial cross-section of the steel pipe column group rectangular. In this embodiment, the four steel pipe columns 3-5 have the same height, which is adapted to the total height of the three offshore photovoltaic supports 2 stacked at intervals. The steel pipe columns 3-5 are variable-diameter steel pipe columns with a lower diameter larger than their upper diameter to increase the structural support strength of the bottom side of the steel pipe columns 3-5. Multiple inter-column supports 3-6 are also arranged at intervals from top to bottom between each pair of adjacent steel pipe columns 3-5 for reinforcement connection. Specifically, the inter-column supports 3-6 include horizontal braces and diagonal braces, which are arranged alternately to form a truss structure with high structural strength.

[0031] The dimensions of the steel foundation and the spacing between adjacent steel pipe columns 3-5 fixed on it are adapted to the weight and dimensions of the marine photovoltaic support 2 and the position of the multiple bolt balls 2-5 connected to the lower chord on it. This achieves the goal of increasing the load-bearing area of ​​the barge deck 1 and reducing concentrated stress by utilizing the steel foundation while meeting the assembly requirements.

[0032] As a preferred technical solution of this embodiment, multiple reinforcing ribs are evenly distributed along the circumferential direction at the bottom end of each steel pipe column 3-5. Each reinforcing rib is vertically arranged so that its two right-angled sides are welded and fixedly connected to the outer wall of the steel pipe column 3-5 and the top surface of the steel section, respectively, so as to increase the connection strength by increasing the connection surface area of ​​the two.

[0033] The first, second, and third photovoltaic support systems are sequentially installed on the steel pipe pile group from bottom to top, and the distance between adjacent photovoltaic support systems is greater than the height of the offshore photovoltaic support 2, so as to avoid interference between the offshore photovoltaic support 2 and the moving parts of the photovoltaic support system above it, causing collisions.

[0034] See Figure 6 The first photovoltaic support system includes four horizontally arranged first legs 3-1, which are arranged radially along the circumference of the steel pipe column group, and their inner ends are respectively fixed to the bottom outer wall of the four steel pipe columns 3-5; four first leg supports 3-3 are arranged vertically and are respectively fixed to the bottom surface of the outer end of the four first legs 3-1 through their top ends; four first leg trays 3-2 are fixed to the top surface of the outer end of the four first legs 3-1 through their bottom ends with their concave surfaces facing upwards; wherein, the concave surface of the first leg tray 3-2 can fit into the bottom of the bolt ball 2-5, and the length of the first leg 3-1 is adapted to the distance from the steel pipe column 3-5 to the adjacent bolt ball 2-5, so that the four first leg trays 3-2 can be simultaneously fitted into the four bolt balls 2-5 at the bottom of the marine photovoltaic support 2 located above them.

[0035] See Figure 7The second photovoltaic support system includes four horizontally arranged second legs 3-7, which are arranged along the circumference of the steel pipe column assembly. Sleeves are provided on the inner ends of the second legs 3-7, allowing the four second legs 3-7 to fit around the four steel pipe columns 3-5 and rotate around them. Four first leg diagonal braces 3-9 are obliquely arranged below the four second legs 3-7, with their tops fixed to the bottom surface of the outer end of the adjacent second legs 3-7. Sleeves are provided at their bottom ends, allowing the four first leg diagonal braces 3-9 to also fit around the four steel pipe columns 3-5. Furthermore, the overall structure formed by the connected second legs 3-7 and first leg diagonal braces 3-9 has a horizontal length slightly smaller than the distance between two adjacent steel pipe columns 3-5, allowing the second legs 3-7 and first leg diagonal braces 3-9 to rotate synchronously between adjacent steel pipe columns 3-5. Figure 2 The rotary contraction state shown, or synchronous rotation to the outer side of the steel pipe column 3-5 in a radial arrangement, is as follows. Figure 3 The rotating support state is shown.

[0036] To position the second leg 3-7 and the first leg diagonal brace 3-9 at designated heights on the steel pipe column 3-5, the second photovoltaic support system also includes eight limiting plates 3-13. Specifically, at two positions on each steel pipe column 3-5 where the second leg 3-7 and the first leg diagonal brace 3-9 are positioned, a limiting plate 3-13 is fitted and horizontally fixed, so that the sleeves at the inner ends of the second leg 3-7 and the first leg diagonal brace 3-9 abut against the top surface of the limiting plate 3-13 to determine their installation height. Simultaneously, limiting plate assemblies are respectively installed on the top surfaces of the second leg 3-7 and the limiting plate 3-13 below it, and on the top surfaces of the first leg diagonal brace 3-9 and the limiting plate 3-13 below it. It consists of two vertically arranged limiting plates 3-14, which are respectively vertically fixed on the top surface of the limiting plate 3-13 and the bottom side wall of the sleeve. When the second leg 3-7 and the first leg diagonal brace 3-9 rotate synchronously to the rotation support state, the limiting plates 3-14 on the inner end sleeves of the two legs abut against the limiting plates 3-14 on the limiting plate 3-13 below them, so as to determine that the second leg 3-7 and the first leg diagonal brace 3-9 have rotated into position, that is, they are arranged in a radial state on the outside of the steel pipe column group, and are exactly at the fitting angle with the bolt ball 2-5. In this embodiment, the limiting plates 3-14 are magnetic limiting plates, and the two limiting plates 3-14 on the sleeve and the limiting plate 3-13 can be connected by magnetic attraction.

[0037] Four second leg trays 3-8 are fixed to the outer top surfaces of the four second legs 3-7 with their concave surfaces facing upwards. The concave surfaces of the second leg trays 3-8 can fit into the bottom of the bolt balls 2-5, and the length of the second leg 3-7 is adapted to the distance from the steel pipe column 3-5 to the adjacent bolt balls 2-5, so that the four second leg trays 3-8 can be simultaneously fitted into the four bolt balls 2-5 at the bottom of the offshore photovoltaic support 2 located above them.

[0038] The structure of the third photovoltaic support system is the same as that of the second photovoltaic support system. Specifically, the third photovoltaic support system includes four horizontally arranged third legs 3-10, which are arranged along the circumference of the steel pipe column group. Four second leg diagonal braces 3-12 are respectively arranged diagonally below the four third legs 3-10, and their tops are fixed to the bottom surface of the outer end of the adjacent third leg 3-10, and their bottoms are fixed to the side wall of the adjacent steel pipe column 3-5. Four third leg trays 3-11 are respectively fixed to the top surface of the outer end of the four third legs 3-10 with their concave discs facing upwards. The concave discs of the third leg trays 3-11 can fit into the bottom of the bolt balls 2-5, and the length of the third leg 3-10 is adapted to the distance from the steel pipe column 3-5 to the adjacent bolt balls 2-5, so that the four third leg trays 3-11 can simultaneously fit into the four bolt balls 2-5 at the bottom of the marine photovoltaic support 2 located above them.

[0039] On each steel pipe column 3-5, a limiting plate 3-13 is fitted and fixed at two positions of the third leg 3-10 and the second leg diagonal brace 3-12, so that the sleeves at the inner ends of the third leg 3-10 and the second leg diagonal brace 3-12 abut against the top surfaces of the two limiting plates 3-13 respectively; limiting plate assemblies are respectively provided on the top surfaces of the third leg 3-10 and the limiting plate 3-13 below it, and on the top surfaces of the second leg diagonal brace 3-12 and the limiting plate 3-13 below it; the two limiting plates 3-14 constituting the limiting plate assembly are respectively fixed on the top surface of the limiting plate 3-13 and the bottom side wall of the sleeve to ensure that the third leg 3-10 and the second leg diagonal brace 3-12 are rotated into position.

[0040] As a preferred technical solution in this embodiment, in each photovoltaic support system, multiple reinforcing ribs are evenly distributed along the circumferential direction between the support leg tray and the support leg below, so as to increase the structural strength between the support leg tray and the support leg.

[0041] As a preferred technical solution of this embodiment, the second leg 3-7 and the third leg 3-10 located on the structure of the second photovoltaic support system and the third photovoltaic support system are both made of telescopic structures, such as telescopic sleeves, so that their length can be adjusted according to the distance of the bolt balls 2-5 on the marine photovoltaic support 2. That is, the length increases when rotating to the support point, and shortens when retracting and rotating to the distance between adjacent steel pipe columns 3-5, ensuring that it can be retracted. Correspondingly, the top ends of the first leg diagonal brace 3-9 and the second leg diagonal brace 3-12 are respectively welded and fixed to the bottom surface of the outer end of the outer tube of the second leg 3-7 and the third leg 3-10, and the second leg tray 3-8 and the third leg tray 3-11 are respectively welded and fixed to the top surface of the outer end of the inner tube of the second leg 3-7 and the third leg 3-10. This structural configuration is suitable for situations with large support distances. Since the steel pipe column 3-5 is far from the bolt ball 2-5, when the outrigger meets the requirements for matching the bolt ball 2-5, the small distance between adjacent steel pipe columns 3-5 makes it impossible to rotate and retract back between the adjacent steel pipe columns. Therefore, this problem can be solved by using a telescopic structure.

[0042] See Figures 1 to 10 Taking the stacked three-layer offshore photovoltaic support structure 2 of this embodiment as an example, the specific barge transportation method of the rotary retractable offshore photovoltaic support structure stacking tooling is described as follows:

[0043] S1. Based on the dimensions of the offshore photovoltaic support 2, determine that the number of rotary retractable offshore photovoltaic support stacking fixtures 3 to be installed on the deck of barge 1 is four, and determine the installation positions of the four rotary retractable offshore photovoltaic support stacking fixtures 3 on the deck based on the principle of uniform distribution; based on the carrying capacity of barge 1, determine that the number of offshore photovoltaic supports 2 transported in each batch is three; furthermore, based on the required number of rotary retractable offshore photovoltaic support stacking fixtures 3 and the number of stacked offshore photovoltaic supports 2, customize the rotary retractable offshore photovoltaic support stacking fixtures 3.

[0044] S2. On land, the offshore photovoltaic support structure 2 is spliced ​​and assembled. The photovoltaic panels 2-4 at the lifting points and the locations of the rotary retractable offshore photovoltaic support stacking fixture 3 on the offshore photovoltaic support structure 2 are not installed temporarily, but are instead placed at the designated locations on the barge 1 for synchronous transportation.

[0045] S3. The four customized rotary retractable marine photovoltaic support stacking fixtures 3 are welded and fixed to the designated positions on the deck of barge 1 through the bottom steel foundation;

[0046] S4. Rotate the outriggers and diagonal braces in the second and third photovoltaic support systems to between the steel pipe columns 3-5, so that they are in a rotary retracted state; use lifting equipment to lift the first-layer offshore photovoltaic support 2 to the top of the four rotary retractable offshore photovoltaic support stacking fixtures 3, and then gradually lower it so that the offshore photovoltaic support 2 passes through the four reserved photovoltaic panel spaces on it and passes through the four rotary retractable offshore photovoltaic support stacking fixtures 3, and reaches the photovoltaic support system, so that the lower chord bolt ball 2-5 of the first-layer offshore photovoltaic support 2 rests on the first outrigger trays 3-2 at its bottom;

[0047] S5. The legs and diagonal braces in the third photovoltaic support system remain in a rotary retracted state, while the legs and diagonal braces in the second photovoltaic support system are rotated to change to a rotary support state. This forms a limiting and fixing effect on the first layer of offshore photovoltaic support 2 below, and prepares for the stacking of the second layer of offshore photovoltaic support 2. Then, the second layer of offshore photovoltaic support 2 is lifted by lifting equipment to the top of the four rotary retractable offshore photovoltaic support stacking fixtures 3, and then gradually lowered so that the offshore photovoltaic support 2 passes through the reserved photovoltaic panel 2-4 space on it to insert the rotary retractable offshore photovoltaic support stacking fixtures 3, and the lower chord bolt ball 2-5 of the offshore photovoltaic support 2 rests on the trays 3-7 of each of its second legs.

[0048] S6. Rotate the outriggers and diagonal braces in the third photovoltaic support system to change them to a rotating support state. Use lifting equipment to lift the third-layer offshore photovoltaic support 2 to the top of the four rotating retractable offshore photovoltaic support stacking fixtures 3, and then gradually lower them so that the offshore photovoltaic support 2 passes through the reserved photovoltaic panel 2-4 space on it to install the rotating retractable offshore photovoltaic support stacking fixtures 3, and place the lower chord bolt ball 2-5 of the offshore photovoltaic support 2 on each of its third outrigger trays 3-10.

[0049] S7. The three-layer offshore photovoltaic support structure 2 is reinforced and fixed by rope binding.

[0050] S8, Barge 1 transports the stacked three-layer offshore photovoltaic support structure 2 to the construction site and unties the reinforcing binding measures; Crane vessel lifts each layer of offshore photovoltaic support structure 2 from top to bottom in sequence to install and fix it on the offshore steel pipe piles; Among them, when lifting the layer of offshore photovoltaic support structure 2, the outriggers and diagonal braces in the photovoltaic support system located above the offshore photovoltaic support structure 2 are rotated to the rotary retracted state;

[0051] S9. After welding and fixing the multiple legs at the bottom of each layer of the offshore photovoltaic support 2 to the multiple steel pipe piles pre-installed at sea as a whole, the uninstalled photovoltaic panels 2-4 transported on the barge 1 are installed on the offshore photovoltaic support 2 to complete the installation of the offshore photovoltaic support 2.

[0052] It should be noted that the parts of this utility model not disclosed in detail belong to the well-known technology in this field; in addition, although the illustrative specific embodiments of this utility model have been described above to facilitate understanding of this utility model by those skilled in the art, it should be clear that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious, and all utility model creations utilizing the concept of this utility model are subject to protection.

Claims

1. A rotary retractable offshore photovoltaic support assembly jig, characterized in that, The system includes a steel foundation, steel pipe column assemblies, and a first photovoltaic support system, a second photovoltaic support system, ..., and an Nth photovoltaic support system, sequentially arranged at intervals on the steel pipe column assemblies from bottom to top. The spacing between adjacent photovoltaic support systems is greater than the height of the offshore photovoltaic support structure. The steel foundation is horizontally fixed to the barge deck. The steel pipe column assemblies consist of multiple vertically arranged steel pipe columns, spaced circumferentially and fixed to the steel foundation. In the multiple photovoltaic support systems, the first photovoltaic support system includes multiple horizontally arranged first legs, radially arranged along the circumference of the steel pipe column assemblies, with their inner ends fixed to the bottom outer walls of the multiple steel pipe columns. The multiple first legs support the lower outer ends of each vertically arranged first leg, with their two ends fixed to the first leg and the barge deck, respectively. The outer end of each outrigger is fixed with a first outrigger tray, the concave plate of which faces upward and engages with multiple bolt balls at the bottom of the offshore photovoltaic support structure. The second photovoltaic support system includes multiple horizontally arranged second outriggers, which are arranged along the circumference of the steel pipe column assembly and have sleeves on their inner ends, allowing the multiple second outriggers to be rotatably fitted onto the outer side of each steel pipe column. Multiple first outrigger diagonal braces are arranged diagonally below each second outrigger, with their top ends fixed to the outer ends of adjacent second outriggers and their bottom ends fitted onto the outer side of adjacent steel pipe columns, allowing the overall structure formed by each second outrigger and its lower first outrigger diagonal brace to rotate between the two adjacent steel pipe columns, or to rotate to the outer side of the steel pipe column and be arranged radially. All other photovoltaic support systems have the same structure as the second photovoltaic support system.

2. The rotary-contracting offshore PV support stacker of claim 1, wherein, The number of photovoltaic support systems, N, can be 3, 4, 5, or 6.

3. The rotary-contracting offshore PV rack layup fixture of claim 1, wherein, The steel foundation adopts a grid-shaped or cross-shaped frame composed of multiple steel sections; the number of steel pipe columns in the steel pipe column group is at least three.

4. The rotary-contracting offshore PV rack layup fixture of claim 1, wherein, The steel pipe columns are made of columns of equal diameter or with a lower diameter greater than its upper diameter; multiple steel pipe columns are of the same height and are adapted to the total height of multiple offshore photovoltaic supports transported in batches and stacked at intervals.

5. The rotary-contracting offshore PV rack layup fixture of claim 1, wherein, Multiple inter-column supports are installed between each pair of adjacent steel pipe columns. The inter-column supports include horizontal braces and diagonal braces, and the two are installed alternately.

6. The rotary-contracting offshore PV rack nesting fixture of claim 1, wherein, In the second photovoltaic support system and the other photovoltaic support systems above it, a limiting plate is fitted and fixed at the position where each leg and each leg brace is set on each steel pipe column, so that the bottom end of the sleeve set on the inner end of each leg and each leg brace abuts against the top surface of the limiting plate for limiting. On the top surface of each leg and the limiting plate below it, and on the top surface of each leg brace and the limiting plate below it, a limiting plate assembly is also set. The limiting plate assembly consists of two vertically set limiting plates, which are fixed on the top surface of the limiting plate and the side wall of the bottom end of the sleeve, respectively. When the leg and the leg brace rotate synchronously to the outside of the steel pipe column and are set in a radial pattern, the limiting plate on the inner end sleeve of the two plates abuts against the limiting plate on the limiting plate below them to confirm that the rotation is in place.

7. The rotary-contracting offshore PV rack nesting fixture of claim 1, wherein, The limiting plate adopts a magnetic limiting plate, and the two limiting plates located on the sleeve and the limiting plate can be connected by magnetic attraction so that the outrigger and the lower outrigger diagonal brace can be temporarily fixed to the outside of the steel pipe column and arranged radially.

8. The rotary-contracting offshore PV rack nesting fixture of claim 1, wherein, In the second photovoltaic support system and the other photovoltaic support systems above it, each leg adopts a telescopic structure, and the top of each leg's diagonal brace is fixed to the outer end of the fixed part on the leg above it that does not extend or retract. Each leg's tray is fixed to the outer end of the telescopic movable part.

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