Offshore photovoltaic ladder stand structure

Abstract

The utility model provides an offshore photovoltaic crawling ladder structure, and relates to the field of offshore photovoltaic technologies. The crawling ladder structure comprises a transverse supporting frame and a longitudinal supporting part, the transverse supporting frame comprises a first longitudinal beam, a second longitudinal beam, a first cross beam and a second cross beam, the first cross beam and the first longitudinal beam are perpendicularly distributed, and the two ends of the first cross beam and the two ends of the second cross beam are in lap joint with the first longitudinal beam and the second longitudinal beam respectively; the first longitudinal beam and the second longitudinal beam are detachably connected; the longitudinal supporting part comprises a first supporting rod, a second supporting rod, a third supporting rod and a fourth supporting rod, and the four supporting rods extend in the direction perpendicular to the first longitudinal beam and the first cross beam; the first supporting rod and the third supporting rod are both detachably connected with the second longitudinal beam, and the second supporting rod and the fourth supporting rod are both detachably connected with the first longitudinal beam. First hooks are arranged at the ends of the sides, away from the first longitudinal beams, of the first cross beams in the four supporting rods, and openings of the first hooks face the transverse supporting frame.

Description

Technical Field

[0001] This disclosure relates to the field of marine photovoltaic technology, and more specifically, to a ladder structure for marine photovoltaic systems. Background Technology

[0002] In offshore photovoltaic (PV) power generation projects, after the PV grid is installed in the offshore installation area, it is necessary to perform some splicing, anti-corrosion coating, and cable laying on the PV grid. Due to the height of the PV grid, it is difficult for people to reach all areas of the PV grid. Therefore, special tooling is required to assist workers in completing the work to ensure the safety, reliability and long-term stable operation of the entire PV system.

[0003] However, due to the height of the photovoltaic grid structure and the complex and changeable marine environment, it is difficult for workers to directly access all areas of the photovoltaic grid structure, resulting in greater operational difficulty and risk, and lower work efficiency.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] This disclosure provides a ladder structure for offshore photovoltaic systems, which can reduce operational difficulty and risk, and improve work efficiency.

[0006] According to one aspect of this disclosure, a ladder structure for offshore photovoltaic systems is provided, comprising:

[0007] The transverse support frame includes a first longitudinal beam and a second longitudinal beam distributed in parallel, as well as a first transverse beam and a second transverse beam distributed in parallel. The first transverse beam is perpendicular to the first longitudinal beam. The two ends of the first transverse beam overlap the first longitudinal beam and the second longitudinal beam, respectively, and are detachably connected to the first longitudinal beam and the second longitudinal beam. The two ends of the second transverse beam also overlap the first longitudinal beam and the second longitudinal beam, respectively, and are detachably connected to the first longitudinal beam and the second longitudinal beam.

[0008] The longitudinal support includes a first support rod, a second support rod, a third support rod, and a fourth support rod. The first, second, third, and fourth support rods all extend in a direction perpendicular to both the first longitudinal beam and the first transverse beam. The first and second support rods are located on the side of the first transverse beam away from the second transverse beam, and the third and fourth support rods are located on the side of the second transverse beam away from the first transverse beam. The first and third support rods are detachably connected to the second longitudinal beam, and the second and fourth support rods are detachably connected to the first longitudinal beam.

[0009] Each of the first support rod, the second support rod, the third support rod, and the fourth support rod has a first hook at the end of the first crossbeam on the side away from the first longitudinal beam. The opening of the first hook faces the transverse support frame, and the first hook is used to attach to the photovoltaic grid frame.

[0010] In one exemplary embodiment of this disclosure, the ladder structure further includes:

[0011] The first limiting beam is located on the side of the first and second crossbeams away from the first longitudinal beam, and one end is connected to the second support rod, and the other end is connected to the fourth support rod.

[0012] The second limiting beam is located on the side of the first and second crossbeams away from the second longitudinal beam, with one end connected to the first support rod and the other end connected to the third support rod.

[0013] The first support rod, the second support rod, the third support rod, and the fourth support rod are all provided with a second hook. The second hook is located on the side of the transverse support frame away from the first hook, and the opening of the second hook faces the transverse support frame. The second hooks on the first support rod and the third support rod are both hooked to the second longitudinal beam, and the second hooks on the second support rod and the fourth support rod are both hooked to the first longitudinal beam.

[0014] In one exemplary embodiment of this disclosure, the first limiting beam is detachably connected to the second support rod and the fourth support rod; the second limiting beam is detachably connected to the first support rod and the third support rod.

[0015] In an exemplary embodiment of this disclosure, the first limiting beam abuts against the surface of the first crossbeam away from the first longitudinal beam and the surface of the second crossbeam away from the first longitudinal beam, and the first limiting beam can clamp one end of the first crossbeam and one end of the second crossbeam between the first limiting beam and the first longitudinal beam; the second limiting beam abuts against the surface of the first crossbeam away from the second longitudinal beam and the surface of the second crossbeam away from the second longitudinal beam, and the second limiting beam can clamp one end of the first crossbeam and one end of the second crossbeam between the second limiting beam and the second longitudinal beam.

[0016] In one exemplary embodiment of this disclosure, the first support rod, the second support rod, the third support rod, and the fourth support rod are all located between the first longitudinal beam and the second longitudinal beam.

[0017] In one exemplary embodiment of this disclosure, the ladder structure further includes:

[0018] Multiple connecting clips are respectively fixed to the first support rod, the second support rod, the third support rod, and the fourth support rod, and are located on the side of the first limiting beam and the second limiting beam away from the first longitudinal beam and the second longitudinal beam; the connecting clips on the first support rod and the connecting clips on the third support rod fix the second limiting beam to the transverse support frame; the connecting clips on the second support rod and the connecting clips on the fourth support rod fix the first limiting beam to the transverse support frame.

[0019] In an exemplary embodiment of this disclosure, the connecting buckle includes a fixing part and a connecting ear. The connecting ear includes a first connecting part, a recessed part, and a second connecting part connected in sequence. The recessed part is sleeved on the outer periphery of the first support rod, the second support rod, the third support rod, or the fourth support rod. The first connecting part and the second connecting part are detachably connected to both ends of the fixing part, respectively.

[0020] In one exemplary embodiment of this disclosure, the first support rod and the first hook and the second hook disposed thereon form an integral structure; the second support rod and the first hook and the second hook disposed thereon form an integral structure; the third support rod and the first hook and the second hook disposed thereon form an integral structure; and the fourth support rod and the first hook and the second hook disposed thereon form an integral structure.

[0021] In one exemplary embodiment of this disclosure, the lateral support frame is a hollow structure.

[0022] In one exemplary embodiment of this disclosure, both the first crossbeam and the second crossbeam are channel steel structures; both the first longitudinal beam and the second longitudinal beam are hollow square tubes.

[0023] The ladder structure for offshore photovoltaic systems disclosed herein features detachable connections between components of the transverse support frame and longitudinal support section. This makes the ladder structure easy to assemble and disassemble, as well as convenient for transportation and relocation, adapting to various work scenarios. During use, the ladder structure and the photovoltaic grid frame are rigidly connected at multiple points via the hook design of each first hook, effectively preventing swaying caused by sea winds and facilitating quick detachment, enabling rapid transition between installation and transportation states. During operation, the longitudinal support section supports the transverse support frame, allowing workers to walk stably on it. Workers can easily access various areas of the photovoltaic grid frame, reducing operational difficulty and increasing efficiency. Furthermore, the vertical distribution of the crossbeams and longitudinal beams forms a rigid support plane, effectively distributing the load on workers and equipment, reducing the risk of structural deformation due to localized stress concentration. The ladder structure can create a safe working platform below the photovoltaic grid frame, enabling high-altitude splicing and wiring operations in conjunction with a fall arrest system.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0026] Figure 1 This is a schematic diagram of the ladder structure of the offshore photovoltaic system in an embodiment of this disclosure.

[0027] In the diagram: 1. Horizontal support frame; 11. First longitudinal beam; 12. Second longitudinal beam; 13. First crossbeam; 14. Second crossbeam; 2. Longitudinal support part; 21. First support rod; 22. Second support rod; 23. Third support rod; 24. Fourth support rod; 31. First limiting beam; 32. Second limiting beam; 4. Connecting buckle; 41. Fixing part; 42. Connecting lug; 51. First hook; 52. Second hook. Detailed Implementation

[0028] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0029] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0030] The terms “a,” “one,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and that other elements / components / etc. may exist in addition to those listed. The terms “first,” “second,” “third,” and “fourth” are used only as markers and are not a limitation on the number of objects.

[0031] This disclosure provides a ladder structure for offshore photovoltaic systems, such as... Figure 1 As shown, the ladder structure may include a transverse support frame 1 and a longitudinal support part 2, wherein:

[0032] The transverse support frame 1 includes a first longitudinal beam 11 and a second longitudinal beam 12 distributed in parallel, and a first transverse beam 13 and a second transverse beam 14 distributed in parallel. The first transverse beam 13 is perpendicular to the first longitudinal beam 11. The two ends of the first transverse beam 13 overlap the first longitudinal beam 11 and the second longitudinal beam 12 respectively, and are detachably connected to the first longitudinal beam 11 and the second longitudinal beam 12. The two ends of the second transverse beam 14 also overlap the first longitudinal beam 11 and the second longitudinal beam 12 respectively, and are detachably connected to the first longitudinal beam 11 and the second longitudinal beam 12.

[0033] The longitudinal support 2 includes a first support rod 21, a second support rod 22, a third support rod 23, and a fourth support rod 24. The first support rod 21, the second support rod 22, the third support rod 23, and the fourth support rod 24 all extend in a direction perpendicular to the first longitudinal beam 11 and perpendicular to the first transverse beam 13. The first support rod 21 and the second support rod 22 are located on the side of the first transverse beam 13 away from the second transverse beam 14, and the third support rod 23 and the fourth support rod 24 are located on the side of the second transverse beam 14 away from the first transverse beam 13. The first support rod 21 and the third support rod 23 are detachably connected to the second longitudinal beam 12, and the second support rod 22 and the fourth support rod 24 are detachably connected to the first longitudinal beam 11.

[0034] The first support rod 21, the second support rod 22, the third support rod 23 and the fourth support rod 24 are all provided with a first hook 51 at the end of the first crossbeam 13 on the side away from the first longitudinal beam 11. The opening of the first hook 51 faces the transverse support frame 1 and is used to hang with the photovoltaic grid frame.

[0035] The ladder structure for offshore photovoltaic systems disclosed herein features a design where all components of the transverse support frame 1 and the longitudinal support section 2 are detachably connected. This makes the ladder structure easy to assemble and disassemble, as well as convenient to transport and move, adapting to different work scenarios. During use, the ladder structure and the photovoltaic grid can be rigidly connected at multiple points via the hook design of each first hook 51, effectively preventing swaying caused by sea winds and facilitating quick detachment, enabling rapid transition between installation and transport states. During operation, the longitudinal support section 2 supports the transverse support frame 1, allowing workers to walk stably on it. Workers can easily access various areas of the photovoltaic grid, resulting in lower work difficulty and higher efficiency. Furthermore, the vertical distribution of the horizontal and vertical beams forms a rigid support plane, effectively distributing the load on workers and equipment, reducing the risk of structural deformation due to localized stress concentration. The ladder structure of this disclosure can form a safe working platform below the photovoltaic grid, enabling high-altitude splicing and wiring operations in conjunction with a fall arrest system.

[0036] The following is a detailed description of the various parts and specific details of the ladder structure of the offshore photovoltaic system disclosed herein:

[0037] The transverse support frame 1 includes parallelly distributed first longitudinal beams 11 and 12, and parallelly distributed first transverse beams 13 and 14. The first longitudinal beams 11, 12, 13, and 14 can all be made of rigid materials, such as metals, alloys, or stainless steel. Preferably, the first longitudinal beams 11, 12, 13, and 14 can be made of lightweight aluminum alloy, and their surfaces can be anodized to form a dense oxide layer. In areas with strong salt spray, the first longitudinal beams 11, 12, 13, and 14 can be made of stainless steel.

[0038] The first crossbeam 13 can be distributed perpendicularly to the first longitudinal beam 11, and the second crossbeam 14 can be distributed perpendicularly to the second longitudinal beam 12. The two ends of the first crossbeam 13 can be respectively attached to the first longitudinal beam 11 and the second longitudinal beam 12, and can be detachably connected to the first longitudinal beam 11 and the second longitudinal beam 12; the two ends of the second crossbeam 14 can also be respectively attached to the first longitudinal beam 11 and the second longitudinal beam 12, and can be detachably connected to the first longitudinal beam 11 and the second longitudinal beam 12.

[0039] In one exemplary embodiment of this disclosure, the first longitudinal beam 11 and the second longitudinal beam 12 can be used to support the first crossbeam 13 and the second crossbeam 14. The first crossbeam 13 and the second crossbeam 14 can be used to support workers. The width of the first crossbeam 13 and the second crossbeam 14 can be greater than the width of the first longitudinal beam 11 and / or the second longitudinal beam 12 to facilitate workers stepping on them. In some embodiments of this disclosure, the upper surfaces of the first crossbeam 13 and the second crossbeam 14 can be provided with anti-slip textures to prevent workers from slipping during operation, thus helping to improve the safety factor during operation.

[0040] In one exemplary embodiment of this disclosure, the transverse support frame 1 may be a hollow structure, which can effectively reduce the weight of the transverse support frame 1, making it lighter and easier to move and transport. For example, the first crossbeam 13 and the second crossbeam 14 may both be channel steel structures; the first longitudinal beam 11 and the second longitudinal beam 12 may both be hollow square tubes.

[0041] The longitudinal support 2 may include a first support rod 21, a second support rod 22, a third support rod 23, and a fourth support rod 24. All four support rods extend in a direction perpendicular to the first longitudinal beam 11 and the first transverse beam 13. The lengths of the first support rod 21, second support rod 22, third support rod 23, and fourth support rod 24 may be equal, and their cross-sections may be circular, elliptical, rectangular, polygonal, or irregular shapes, without any particular limitation. In some embodiments of this disclosure, to ensure the support strength of each support rod, the first support rod 21, second support rod 22, third support rod 23, and fourth support rod 24 may be solid structures. The first support rod 21, second support rod 22, third support rod 23, and fourth support rod 24 may be made of high-strength, lightweight materials that match the transverse support frame 1; for example, the material may be metal, alloy, or stainless steel.

[0042] The first support rod 21, the second support rod 22, the third support rod 23 and the fourth support rod 24 are all provided with a first hook 51 at the end of the first crossbeam 13 on the side away from the first longitudinal beam 11. The opening of the first hook 51 can face the transverse support frame 1. The first hook 51 can be used to hang with the photovoltaic grid frame.

[0043] In some embodiments of this disclosure, the material of the first hook 51 is the same as that of the first support rod 21, the second support rod 22, the third support rod 23 or the fourth support rod 24, for example, the material may be metal, alloy or stainless steel.

[0044] In some embodiments of this disclosure, the first hook 51 provided on the first support rod 21 may be integral with the first support rod 21, the first hook 51 provided on the second support rod 22 may be integral with the second support rod 22, the first hook 51 provided on the third support rod 23 may be integral with the third support rod 23, and the first hook 51 provided on the fourth support rod 24 may be integral with the fourth support rod 24.

[0045] Both the first support rod 21 and the second support rod 22 can be located on the side of the first crossbeam 13 away from the second crossbeam 14. Similarly, both the third support rod 23 and the fourth support rod 24 can be located on the side of the second crossbeam 14 away from the first crossbeam 13. All four support rods are located between the first longitudinal beam 11 and the second longitudinal beam 12. The first support rod 21 and the third support rod 23 are detachably connected to the second longitudinal beam 12 via a first hook 51, and the second support rod 22 and the fourth support rod 24 are detachably connected to the first longitudinal beam 11 via a first hook 51.

[0046] In one exemplary embodiment of this disclosure, the ladder structure may further include a first limiting beam 31 and a second limiting beam 32, wherein:

[0047] The first limiting beam 31 may be rod-shaped and may be distributed parallel to the first longitudinal beam 11. The cross-section of the first limiting beam 31 may be circular, elliptical, rectangular, polygonal, or irregular in shape, and will not be listed here. The first limiting beam 31 may be located on the side of the first cross beam 13 and the second cross beam 14 away from the first longitudinal beam 11, and one end of the first limiting beam 31 is connected to the second support rod 22, and the other end is connected to the fourth support rod 24.

[0048] The second limiting beam 32 may be rod-shaped and may be distributed parallel to the second longitudinal beam 12. The cross-section of the second limiting beam 32 may be circular, elliptical, rectangular, polygonal, or irregular in shape, and will not be listed here. The second limiting beam 32 may be located on the side of the first crossbeam 13 and the second crossbeam 14 away from the second longitudinal beam 12, and one end of the second limiting beam 32 is connected to the first support rod 21, and the other end is connected to the third support rod 23.

[0049] One end of the first limiting beam 31 can be detachably connected to the second support rod 22, and the other end can be detachably connected to the fourth support rod 24. One end of the second limiting beam 32 can be detachably connected to the first support rod 21, and the other end can be detachably connected to the third support rod 23.

[0050] In an exemplary embodiment of this disclosure, the first limiting beam 31 abuts against the surface of the first crossbeam 13 away from the first longitudinal beam 11, and simultaneously abuts against the surface of the second crossbeam 14 away from the first longitudinal beam 11. The first limiting beam 31 clamps one end of the first crossbeam 13 and one end of the second crossbeam 14 between the first limiting beam 31 and the first longitudinal beam 11. The second limiting beam 32 abuts against the surface of the first crossbeam 13 away from the second longitudinal beam 12, and simultaneously abuts against the surface of the second crossbeam 14 away from the second longitudinal beam 12. The second limiting beam 32 clamps one end of the first crossbeam 13 and one end of the second crossbeam 14 between the second limiting beam 32 and the second longitudinal beam 12. That is, the first limiting beam 31 and the second limiting beam 32 can laterally limit the first crossbeam 13 and the second crossbeam 14, preventing slippage or fall during operation and thus improving safety.

[0051] In one exemplary embodiment of this disclosure, the ladder structure may further include a plurality of connecting buckles 4, each connecting buckle 4 being fixed to the first support rod 21, the second support rod 22, the third support rod 23, and the fourth support rod 24, and located on the side of the first limiting beam 31 and the second limiting beam 32 away from the first longitudinal beam 11 and the second longitudinal beam 12. The connecting buckles 4 on the first support rod 21 and the connecting buckles 4 on the third support rod 23 can fix the second limiting beam 32 to the transverse support frame 1; the connecting buckles 4 on the second support rod 22 and the connecting buckles 4 on the fourth support rod 24 can fix the first limiting beam 31 to the transverse support frame 1.

[0052] In one exemplary embodiment of this disclosure, the connecting buckle 4 may include a fixing part 41 and a connecting ear 42. Both the connecting ear 42 and the fixing part 41 can be made of a rigid material, such as metal, alloy, or stainless steel. The connecting ear 42 may include a first connecting part, a recessed part, and a second connecting part connected in sequence. The first and second connecting parts may be sheet-like or block-like. The surface of the recessed part may be curved, and the cross-section of the recessed part may be semi-circular. The first connecting part, the recessed part, and the second connecting part may form a shape similar to an "Ω". During use, the recessed part can be fitted around the outer periphery of the first support rod 21, the second support rod 22, the third support rod 23, or the fourth support rod 24. The fixing part 41 is placed on the opening side of the recessed part, and the first and second connecting parts are detachably connected to both ends of the fixing part 41.

[0053] For example, the first connecting portion may have a first connecting hole extending through it along its thickness direction, and the second connecting portion may have a second connecting hole extending through it along its thickness direction. The fixing portion 41 may be sheet-like, plate-like, or block-like, and may have a first fixing hole and a second fixing hole extending through it along its thickness direction. During use, after the recessed portion is fitted onto the outer periphery of the first support rod 21, the second support rod 22, the third support rod 23, or the fourth support rod 24, the first fixing hole on the fixing portion 41 can be aligned with the first connecting hole on the first connecting portion, and the second fixing hole on the fixing portion 41 can be aligned with the second connecting hole on the second connecting portion. A first bolt is passed through the first connecting hole and the first fixing hole in sequence, with the end of the first bolt extending out of the first fixing hole. A first nut is then fitted onto the protruding end of the first bolt. The first nut is rotated to fix the fixing part 41 to the first connecting part. At the same time, a second bolt is passed through the second connecting hole and the second fixing hole in sequence, with the end of the second bolt extending out of the second fixing hole. A second nut is then fitted onto the protruding end of the second bolt. The second nut is rotated to fix the fixing part 41 to the second connecting part.

[0054] In an exemplary embodiment of this disclosure, each of the first support rod 21, the second support rod 22, the third support rod 23, and the fourth support rod 24 is provided with a second hook 52. The second hook 52 can be located on the side of the transverse support frame 1 away from the first hook 51, and the opening of the second hook 52 can face the transverse support frame 1. The second hook 52 on the first support rod 21 and the second hook 52 on the third support rod 23 can be hooked to the second longitudinal beam 12. The second hook 52 on the second support rod 22 and the second hook 52 on the fourth support rod 24 can be hooked to the first longitudinal beam 11. That is, the first longitudinal beam 11 and the second longitudinal beam 12 can be supported by each second hook 52. It should be noted that the second hook 52 is located in the middle of each support rod. For example, the distance between the second hook 52 and the first hook 51 is equal to the distance between the second hook 52 and the end of each support rod that is far from the first hook 51; or, the distance between the second hook 52 and the first hook 51 is 1.5 to 3 times the distance between the second hook 52 and the end of each support rod that is far from the first hook 51.

[0055] In some embodiments of this disclosure, the material of the second hook 52 is the same as that of the first support rod 21, the second support rod 22, the third support rod 23, or the fourth support rod 24; for example, the material may be metal, alloy, or stainless steel. In some embodiments of this disclosure, the second hook 52 provided on the first support rod 21 may be integrally formed with the first support rod 21; the second hook 52 provided on the second support rod 22 may be integrally formed with the second support rod 22; the second hook 52 provided on the third support rod 23 may be integrally formed with the third support rod 23; and the second hook 52 provided on the fourth support rod 24 may be integrally formed with the fourth support rod 24.

[0056] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A ladder structure for offshore photovoltaic systems, characterized in that, include: The transverse support frame includes a first longitudinal beam and a second longitudinal beam distributed in parallel, as well as a first transverse beam and a second transverse beam distributed in parallel. The first transverse beam is perpendicular to the first longitudinal beam. The two ends of the first transverse beam overlap the first longitudinal beam and the second longitudinal beam, respectively, and are detachably connected to the first longitudinal beam and the second longitudinal beam. The two ends of the second transverse beam also overlap the first longitudinal beam and the second longitudinal beam, respectively, and are detachably connected to the first longitudinal beam and the second longitudinal beam. The longitudinal support includes a first support rod, a second support rod, a third support rod, and a fourth support rod. The first, second, third, and fourth support rods all extend in a direction perpendicular to both the first longitudinal beam and the first transverse beam. The first and second support rods are located on the side of the first transverse beam away from the second transverse beam, and the third and fourth support rods are located on the side of the second transverse beam away from the first transverse beam. The first and third support rods are detachably connected to the second longitudinal beam, and the second and fourth support rods are detachably connected to the first longitudinal beam. Each of the first support rod, the second support rod, the third support rod, and the fourth support rod has a first hook at the end of the first crossbeam on the side away from the first longitudinal beam. The opening of the first hook faces the transverse support frame, and the first hook is used to attach to the photovoltaic grid frame.

2. The ladder structure according to claim 1, characterized in that, The ladder structure also includes: The first limiting beam is located on the side of the first and second crossbeams away from the first longitudinal beam, and one end is connected to the second support rod, and the other end is connected to the fourth support rod. The second limiting beam is located on the side of the first and second crossbeams away from the second longitudinal beam, with one end connected to the first support rod and the other end connected to the third support rod. The first support rod, the second support rod, the third support rod, and the fourth support rod are all provided with a second hook. The second hook is located on the side of the transverse support frame away from the first hook, and the opening of the second hook faces the transverse support frame. The second hooks on the first support rod and the third support rod are both hooked to the second longitudinal beam, and the second hooks on the second support rod and the fourth support rod are both hooked to the first longitudinal beam.

3. The ladder structure according to claim 2, characterized in that, The first limiting beam is detachably connected to the second support rod and the fourth support rod; the second limiting beam is detachably connected to the first support rod and the third support rod.

4. The ladder structure according to claim 2, characterized in that, The first limiting beam abuts against the surface of the first crossbeam that is away from the first longitudinal beam and the surface of the second crossbeam that is away from the first longitudinal beam. The first limiting beam can clamp one end of the first crossbeam and one end of the second crossbeam between the first limiting beam and the first longitudinal beam. The second limiting beam abuts against the surface of the first crossbeam that is away from the second longitudinal beam and the surface of the second crossbeam that is away from the second longitudinal beam. The second limiting beam can clamp one end of the first crossbeam and one end of the second crossbeam between the second limiting beam and the second longitudinal beam.

5. The ladder structure according to claim 1, characterized in that, The first support rod, the second support rod, the third support rod, and the fourth support rod are all located between the first longitudinal beam and the second longitudinal beam.

6. The ladder structure according to claim 2, characterized in that, The ladder structure also includes: Multiple connecting clips are respectively fixed to the first support rod, the second support rod, the third support rod, and the fourth support rod, and are located on the side of the first limiting beam and the second limiting beam away from the first longitudinal beam and the second longitudinal beam; the connecting clips on the first support rod and the connecting clips on the third support rod fix the second limiting beam to the transverse support frame; the connecting clips on the second support rod and the connecting clips on the fourth support rod fix the first limiting beam to the transverse support frame.

7. The ladder structure according to claim 6, characterized in that, The connecting buckle includes a fixing part and a connecting ear. The connecting ear includes a first connecting part, a recessed part, and a second connecting part connected in sequence. The recessed part is sleeved on the outer periphery of the first support rod, the second support rod, the third support rod, or the fourth support rod. The first connecting part and the second connecting part are detachably connected to both ends of the fixing part, respectively.

8. The ladder structure according to claim 2, characterized in that, The first support rod and the first and second hooks thereon are integrated into one structure; the second support rod and the first and second hooks thereon are integrated into one structure; the third support rod and the first and second hooks thereon are integrated into one structure; the fourth support rod and the first and second hooks thereon are integrated into one structure.

9. The ladder structure according to any one of claims 1-8, characterized in that, The horizontal support frame is a hollow structure.

10. The ladder structure according to claim 9, characterized in that, Both the first and second crossbeams are channel steel structures; both the first and second longitudinal beams are hollow square tubes.

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