Photovoltaic support bearing device steel column connecting node based on offshore floating platform

Abstract

The utility model discloses a photovoltaic support bearing device steel column connecting node based on an offshore floating platform, which comprises a steel column component, a connecting component and a damping device arranged between the steel column component and the connecting component, and the damping device comprises an elastic component arranged in the center, and a first connecting part and a second connecting part which are vertically fixed at two ends of the elastic component. The damping device is arranged between the steel column component and the connecting component, wave energy transmitted to the steel column component is dissipated, and the problem that a steel structure is insufficient in durability due to the fact that the steel structure floats on the sea for a long time is solved.

Description

Technical Field

[0001] The utility model relates to the field of offshore floating platform steel structures, and in particular to a photovoltaic support bearing device steel column connection node. Background Art

[0002] Traditional offshore photovoltaic power generation systems primarily utilize jellyfish-type floating platforms, where photovoltaic brackets and panels are mounted directly on a floating platform. However, because the panels are close to the sea surface, they are susceptible to corrosion. To address this issue, existing technologies have proposed constructing a steel structure on the floating platform. The lower level of the steel structure accommodates the discharger component box, while the upper level accommodates the photovoltaic panels, thus meeting the requirements of integrated grid-connected power generation and transmission within the same space.

[0003] In actual practical application, due to the unpredictable wave loads transmitted to the steel structure through the floating platform, the steel structure is prone to fatigue and damage under long-term impact of different frequencies, and its durability is poor. Utility Model Content

[0004] The utility model proposes a photovoltaic support bearing device steel column connection node based on an offshore floating platform, the purpose of which is to solve the durability problem of steel structures due to the influence of wave loads on them floating on the sea for a long time.

[0005] The technical solution of this utility model is as follows:

[0006] A steel column connection node for a photovoltaic support bearing device based on an offshore floating platform includes a steel column component, and is characterized in that it also includes a connecting component, the connecting component includes an upper connecting piece and a clamp assembly connected to a floating tube, the upper connecting piece is connected to the clamp assembly below; a damping device is provided between the steel column component and the upper connecting piece of the connecting component, the damping device includes an elastic component and a first connecting part and a second connecting part fixedly connected to the upper and lower sides of the elastic component, the first connecting part is connected to the steel column component, and the second connecting part is connected to the upper connecting piece.

[0007] Furthermore, the steel column component includes a circular tube steel column and a bottom plate fixed to the lower end of the circular tube steel column, the bottom plate is provided with a through hole with a diameter smaller than the inner diameter of the circular tube steel column, and a pad is provided on the inner wall of the bottom of the circular tube steel column.

[0008] Furthermore, it also includes a limiting component arranged between the first connecting part and the second connecting part, so as to limit the relative displacement of the first connecting part and the second connecting part.

[0009] Furthermore, the limiting assembly includes a limiting sleeve fixed to the bottom surface of the first connecting part and a limiting rod passing through the limiting sleeve, and the lower part of the limiting rod is fixedly connected to the second connecting part.

[0010] Furthermore, the upper portion of the limiting rod is connected to two sets of nuts after passing through the bottom plate of the steel column component; the lower portion of the limiting rod and the second connecting portion are connected in an anti-loosening manner using double-sided fastening nuts.

[0011] Furthermore, the limiting assembly also includes a limiting frame fixed on the second connecting part and a limiting column fixed on the first connecting part, and the limiting column passes downward through the transverse plate on the limiting frame and is connected to a limiting nut.

[0012] Furthermore, the elastic component includes a plurality of springs arranged in a matrix.

[0013] Furthermore, the clamp assembly includes upper and lower connected clamping members.

[0014] Furthermore, the upper connector and the clamp assembly are fixedly connected via a nylon rope and a vertical PE pipe connector.

[0015] Compared with the prior art, the present invention has the following positive effects:

[0016] (1) The wave energy is dissipated by the compression deformation of the elastic component at the center of the damping device. At the same time, the limiting effect of the limit component ensures that the compression spring is always in an elastically effective state.

[0017] (2) The center hole of the steel column base plate is smaller than the inner diameter of the circular steel column. This not only provides conditions for welding from the inside of the circular steel column, but also ensures that both ends of the steel column are open, which can meet the surface anti-corrosion treatment requirements of hot-dip galvanized components. At the same time, stiffening ribs are set on all four sides of the bottom of the steel column to ensure the strength and rigidity of the connection between the circular steel column and the base plate.

[0018] (3) The circular tube steel column has uniform resistance to wave loads in all directions. Combined with the bidirectional symmetrical damping device design, it can ensure the reliability of the node's force transmission effect on wave energy and bearing capacity.

[0019] (4) The components are connected by anti-loosening fastening method. The upper part of the limit rod and the bottom plate of the steel column component are connected by double nuts. The lower part of the limit rod and the connecting plate of the second connecting part are connected by double-sided fastening nuts and single-sided standard washers. On the one hand, it ensures that each connection point is firm and reliable, and on the other hand, it will not damage the anti-corrosion layer, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the connection node of the utility model;

[0021] Figure 2 for Figure 1 AA cross-section of

[0022] Figure 3 for Figure 1BB cross-section diagram;

[0023] Figure 4 for Figure 2 CC cross-section diagram;

[0024] Figure 5 This is a partial enlarged view of the damping device.

[0025] In the figure, 1. round tube steel column; 2. stiffening rib; 3. bottom plate; 4. damping device; 401. first connecting part; 402. second connecting part; 403. elastic component; 5. limiting component; 501. limiting sleeve; 502. limiting rod; 503. limiting frame; 6. floating tube; 7. clamp assembly; 8. upper connecting piece; 9. nylon rope; 10. pad. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0027] like Figure 1 As shown, a steel column connection node for a photovoltaic rack support device on an offshore floating platform comprises a steel column component and a connection component for connecting to the floating platform's floating tube 6. The connection component comprises an upper connector 8 and a clamp assembly 7 connected to the floating tube 6. The clamp assembly 7 comprises upper and lower clamping members connected by a PE pin, with the upper clamping member fixedly connected to the upper connector 8. The upper connector 8 and the clamp assembly 7 are also connected to the vertical PE tube connector via nylon ropes 9 on both sides.

[0028] like Figure 2 and Figure 4 As shown, the steel column component is preferably a circular tube steel column 1, and a base plate 3 is fixed to the lower end of the circular tube steel column 1. Stiffening ribs 2 are fixed on the four sides of the bottom of the circular tube steel column 1 to ensure the strength and rigidity of the connection between the circular tube steel column 1 and the base plate 3. The bottom of the circular tube steel column 1 is welded to the base plate 3 by full penetration welding, and a pad 10 is provided at the bottom weld of the inner wall of the circular tube steel column 1. A through hole with a diameter smaller than the inner diameter of the circular tube steel column 1 is preset at the center position of the base plate 3, which not only provides conditions for welding from the inside of the circular tube steel column 1, but also ensures that both ends of the steel column component are open, which can meet the surface anti-corrosion treatment requirements of hot-dip galvanized components.

[0029] like Figure 3 and Figure 5As shown, a damping device 4 is connected between the steel column and the connecting member. The damping device 4 comprises an elastic component 403 positioned at its center, and a first connecting portion 401 and a second connecting portion 402 fixed to the upper and lower ends of the elastic component 403. The top end of the elastic component 403 is fixedly connected to the first connecting portion 401 via a connecting rod. The elastic component 403 comprises four groups of springs arranged in a matrix. A limiter component 5 is also positioned between the first connecting portion 401 and the second connecting portion 402 to define their extreme positions. Each group of the limiting components 5 respectively includes a limiting sleeve 501 and a limiting rod 502. The limiting sleeve 501 is fixed on the bottom surface of the first connecting part 401. The limiting rod 502 passes through the limiting sleeve 501 to connect the first connecting part 401 and the second connecting part 402 together. The upper part of the limiting rod 502 passes through the bottom plate 3 of the steel column component and is connected with two sets of nuts. The lower part of the limiting rod 502 is connected to the second connecting part 402 by a double-sided fastening nut and a single-sided standard washer to prevent loosening. The limiting sleeve 501 and the limiting rod 502 can limit the relative displacement of the first connecting part 401 and the second connecting part 402 in the horizontal direction. Each group of limiting components 5 also includes a limiting frame 503 fixed on the second connecting part 402 and a limiting column fixed on the first connecting part 401. The limiting column passes downward through the horizontal plate on the limiting frame 503 and is connected to a limiting nut and an anti-loosening gasket. The limiting nut and the limiting frame 503 can limit the relative displacement of the first connecting part 401 and the second connecting part 402 in the vertical direction.

[0030] Construction method:

[0031] Since welding damages the galvanized layer, even if anti-corrosion paint is applied after welding, the anti-corrosion effect will be greatly reduced, and the welded parts will become weak points, making them most vulnerable to damage, thus affecting the overall service life of the structure. Therefore, during construction, the required components are first cut according to the design drawings in the processing workshop, and after the welding and assembly of each part are completed, the anti-corrosion treatment is then carried out separately.

[0032] When assembling the damping device 4 and the limiting assembly 5, the required components for the first connecting part 401, the limiting sleeve 501, the second connecting part 402, and the elastic assembly 403 are cut in the manufacturing workshop. First, the connecting rod and the limiting column are welded to the bottom surface of the first connecting part 401, and the limiting bracket 503 is welded to the second connecting part 402. Then, the two ends of the elastic assembly 403 are fixedly connected to the connecting rod and the second connecting part 402 respectively. Finally, the limiting sleeve 501 is welded to the bottom surface of the first connecting part 401.

[0033] When assembling the steel column components, in the manufacturing workshop, the bottom plate 3 with a through hole opened at the center of the blanking process, the round tube steel column 1 and the stiffening rib 2 are welded to form the steel column components.

[0034] The assembled parts are then hot-dip galvanized for corrosion protection. Fasteners coated with PTFE (fluoropolymer) are then used to secure the stopper rod 502 to the second connecting portion 402. This completes the assembly and connection between the stopper rod 502, the first connecting portion 401, and the base plate 3. Finally, the second connecting portion 402 is assembled and connected to the upper connecting member 8, and the clamp assembly 7 is connected to the flotation tube 6.

[0035] When the floating platform is subjected to wave loads, the elastic component 403 connected thereto subsequently deforms accordingly, attenuating the energy transmitted to the first connection portion 401. Simultaneously, the limiting component 5 can limit the relative displacement between the first connection portion 401 and the second connection portion 402, thereby preventing the elastic component 403 from exceeding its elastic range, causing permanent deformation and failure.

[0036] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. The scope of the present invention is defined by the claims rather than the above description.

Claims

1. A steel column connection node for a photovoltaic support bearing device based on an offshore floating platform, comprising a steel column component, characterized in that: It also includes a connecting component, which includes an upper connecting component (8) and a clamp assembly (7) connected to the floating tube (6), and the upper connecting component (8) is connected to the lower clamp assembly (7); A damping device (4) is provided between the steel column component and the upper connecting member (8) of the connecting member, wherein the damping device (4) comprises an elastic component (403) and a first connecting portion (401) and a second connecting portion (402) fixed to upper and lower sides of the elastic component (403), wherein the first connecting portion (401) is connected to the steel column component, and the second connecting portion (402) is connected to the upper connecting member (8).

2. The steel column connection node of the photovoltaic support bearing device based on the offshore floating platform according to claim 1, characterized in that: The steel column component comprises a circular tube steel column (1) and a bottom plate (3) fixed to the lower end of the circular tube steel column (1); a through hole with a diameter smaller than the inner diameter of the circular tube steel column (1) is opened on the bottom plate (3); and a pad (10) is provided on the inner wall of the bottom of the circular tube steel column (1).

3. The steel column connection node of the photovoltaic support bearing device based on the offshore floating platform according to claim 1, characterized in that: It also includes a limiting assembly (5) arranged between the first connecting portion (401) and the second connecting portion (402) for limiting the relative displacement of the first connecting portion (401) and the second connecting portion (402).

4. The steel column connection node of the photovoltaic support bearing device based on the offshore floating platform according to claim 3, characterized in that: The limiting assembly (5) comprises a limiting sleeve (501) fixed to the bottom surface of the first connecting portion (401) and a limiting rod (502) passing through the limiting sleeve (501), and the lower portion of the limiting rod (502) is fixedly connected to the second connecting portion (402).

5. The steel column connection node of the photovoltaic support bearing device based on the offshore floating platform according to claim 4, characterized in that: The upper portion of the limiting rod (502) passes through the bottom plate (3) of the steel column component and is connected to two sets of nuts; the lower portion of the limiting rod (502) and the second connecting portion (402) are connected in an anti-loosening manner using double-sided fastening nuts.

6. The steel column connection node of the photovoltaic support bearing device based on the offshore floating platform according to claim 3, characterized in that: The limiting assembly (5) further comprises a limiting frame (503) fixed on the second connecting portion (402) and a limiting column fixed on the first connecting portion (401), wherein the limiting column passes downward through the transverse plate on the limiting frame (503) and is connected to a limiting nut.

7. The steel column connection node of the photovoltaic support bearing device based on the offshore floating platform according to claim 1, characterized in that: The elastic component (403) includes a plurality of springs arranged in a matrix.

8. The steel column connection node of the photovoltaic support bearing device based on the offshore floating platform according to claim 1, characterized in that: The clamp assembly (7) comprises upper and lower connected clamping parts.

9. The steel column connection node of the photovoltaic support bearing device based on the offshore floating platform according to claim 1, characterized in that: The upper connecting piece (8) is fixedly connected to the clamp assembly (7) via a nylon rope (9) and a vertical PE pipe connecting piece.

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