Photovoltaic support structure arranged outside existing building parapet wall and installation method

Abstract

The application provides a photovoltaic support structure and mounting method arranged outside the parapet of an existing building, comprising a parapet top surface and a parapet outer facade, and a plurality of spaced and detachably arranged main fixing members on the parapet top surface, the side wall of the main fixing member is fixedly provided with a sliding assembly, adjacent sliding assemblies are slidably connected with the same photovoltaic panel assembly, and the photovoltaic panel assembly is vertically and spaced arranged on the parapet outer facade; the main fixing member comprises a U-shaped steel plate, the U-shaped steel plate is interference-coupled on the parapet top surface, the side of the U-shaped steel plate close to the parapet outer facade is vertically and slidably provided with an outer end inverted L-shaped plate, the other side is obliquely and coupled with an inner end inverted L-shaped plate, and the top of the outer end inverted L-shaped plate and the inner end inverted L-shaped plate is connected with a high-torque coil spring; in the application, the U-shaped steel plate is hung on the parapet top surface, the outer end inverted L-shaped plate and the inner end inverted L-shaped plate provide clamping force to the U-shaped steel plate through the high-torque coil spring, and stable support can be provided without damaging the parapet structure.

Description

Technical Field

[0001] This invention relates to the field of building photovoltaic technology, specifically a photovoltaic support structure installed on the outside of the parapet wall of an existing building. Background Technology

[0002] Green buildings need to make efficient use of natural resources to reduce their own energy consumption. Currently, photovoltaic (PV) modules are often installed on building roofs or windows to generate electricity. The essence of installing PV modules on building windows is to generate electricity by utilizing the abundant sunlight received by the building facade. However, the technology of installing PV modules on building windows is usually used in new buildings, so that it can be combined with various green building design measures to achieve an effective reduction in energy consumption.

[0003] However, the facades of existing buildings are not suitable for using building window photovoltaic modules or photovoltaic panels because it requires the removal of old windows, resulting in huge waste of engineering costs. In addition, multiple components need to be connected later to fix the photovoltaic panels, which damages the waterproofing and insulation of the existing building facade. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a photovoltaic support structure that is installed on the outside of the parapet wall of an existing building. Since many existing buildings have the outer plane of the parapet wall overlapping with the building facade, this structure can not damage the waterproof and thermal insulation measures of the existing parapet wall itself, and can also stably install the photovoltaic support at the parapet wall.

[0005] This invention is achieved through the following technical solution:

[0006] A photovoltaic support structure installed on the outside of the parapet wall of an existing building includes a top surface of the parapet wall and an outer facade of the parapet wall, as well as a plurality of main fixing members that are spaced apart and detachably installed on the top surface of the parapet wall. The sidewalls of the main fixing members are fixedly provided with sliding components, and adjacent sliding components are slidably connected to the same photovoltaic panel assembly. The photovoltaic panel assemblies are vertically spaced apart on the outer facade of the parapet wall.

[0007] The main fixing component includes a U-shaped steel plate, which is interference-fitted to the top surface of the parapet wall. An outer inverted L-shaped plate is vertically slidably arranged on one side of the U-shaped steel plate near the outer facade of the parapet wall, and an inner inverted L-shaped plate is obliquely clamped on the other side. A high-torque coil spring is connected to the top of the outer and inner inverted L-shaped plates.

[0008] Furthermore, there are multiple U-shaped steel plates, which are interlocked at intervals on the top surface of the parapet wall. The same inverted L-shaped plate is vertically slidably installed on the side of the multiple U-shaped steel plates near the outer facade of the parapet wall, and the inverted L-shaped plate at the inner end of the multiple U-shaped steel plates is obliquely interlocked at the other end.

[0009] Furthermore, a first slide rail is vertically provided on the side of the U-shaped steel plate near the outer facade of the parapet wall, and a limiting slide groove is provided on the outer inverted L-shaped plate, which is slidably connected to the first slide rail. Multiple locking teeth are vertically spaced on the other side of the U-shaped steel plate, and the locking teeth are engaged with the bottom of the inner inverted L-shaped plate.

[0010] Furthermore, a first connecting rod is vertically fixed on the side of the outer inverted L-shaped plate near the parapet wall facade, and a second connecting rod is fixed on the side wall of the inner inverted L-shaped plate. An electromagnetic hydraulic tensioner is connected between the first connecting rod and the second connecting rod.

[0011] The first connecting rod is arranged parallel to the outer inverted L-shaped plate, and the second connecting rod is arranged parallel to the inner inverted L-shaped plate.

[0012] Furthermore, the sliding assembly includes a fixed slide rail fixedly mounted on the inverted L-shaped plate at the outer end. The fixed slide rail is vertically provided with a T-shaped groove, and a sliding base plate is provided inside the T-shaped groove. Both sides of the inner wall of the T-shaped groove are provided with transmission gears, and the sliding base plate is connected to the transmission gear teeth.

[0013] Furthermore, the transmission gear is connected to a drive device.

[0014] Furthermore, the sliding base plate is provided with an enlarged head slide, and at least one connecting plate is vertically sleeved on the enlarged head slide. The connecting plate is detachably connected to a photovoltaic panel assembly. A first anti-collision spring is provided at the top of the connecting plate, and a second anti-collision spring is provided at the bottom. A bottom limiting plate is provided at the bottom of the enlarged head slide.

[0015] Furthermore, a rubber anti-collision pad is provided on the side of the bottom limiting plate near the outer inverted L-shaped plate;

[0016] The photovoltaic panel assembly and the connecting plate are detachably connected by screws;

[0017] The connecting plate is integrally provided with a second slide rail, and the enlarged head slide rail is sleeved with the second slide rail.

[0018] Furthermore, the vertical projections of the axes of the first and second anti-collision springs do not coincide.

[0019] An installation method for a photovoltaic support structure installed on the outside of the parapet wall of an existing building includes the following steps:

[0020] The U-shaped steel plate is clipped onto the top surface of the parapet wall, and plain concrete is filled into the gap between the U-shaped steel plate and the top surface of the parapet wall.

[0021] The outer and inner inverted L-shaped plates are placed on both sides of the U-shaped steel plate, and the tops of the outer and inner inverted L-shaped plates are connected by a high-torque coil spring.

[0022] A sliding component is provided on the side wall of the inverted L-shaped plate at the outer end, and adjacent sliding components are slidably connected to the same photovoltaic panel assembly.

[0023] Compared with the prior art, the present invention has the following beneficial technical effects:

[0024] This invention provides a photovoltaic support structure installed on the outside of the parapet wall of an existing building, including a top surface of the parapet wall and an outer facade of the parapet wall, and multiple main fixing members spaced apart and detachably installed on the top surface of the parapet wall. Each main fixing member has a sliding component fixedly installed on its sidewall, and adjacent sliding components are slidably connected to the same photovoltaic panel assembly. The photovoltaic panel assemblies are vertically spaced apart on the outer facade of the parapet wall. Each main fixing member includes a U-shaped steel plate, which is interference-fitted to the top surface of the parapet wall, with the side of the U-shaped steel plate closest to the outer facade of the parapet wall vertically sliding... The device is equipped with an outer inverted L-shaped plate and an inner inverted L-shaped plate that is inclinedly engaged on the other side. High-torque coil springs are connected to the tops of the outer and inner inverted L-shaped plates. In this application, the U-shaped steel plate is hung on the top surface of the parapet wall. The outer and inner inverted L-shaped plates provide clamping force to the U-shaped steel plate through the high-torque coil springs, enabling stable support without damaging the parapet wall structure. The sliding assembly provides more space for placing the photovoltaic panel components, thus enabling this application to achieve the goal of efficiently utilizing natural resources to reduce its own energy consumption.

[0025] This invention provides an installation method for a photovoltaic support structure installed on the outside of the parapet wall of an existing building, comprising the following steps: clamping a U-shaped steel plate onto the top surface of the parapet wall and filling the gap between the U-shaped steel plate and the top surface of the parapet wall with plain concrete to improve structural stability; placing an outer inverted L-shaped plate and an inner inverted L-shaped plate on both sides of the U-shaped steel plate, and connecting the tops of the outer and inner inverted L-shaped plates with a high-torsion coil spring to provide clamping force to the U-shaped steel plate; and setting a sliding component on the side wall of the outer inverted L-shaped plate, and slidingly connecting adjacent sliding components to the same photovoltaic panel assembly to complete the installation. This installation method does not damage the parapet wall structure and is simple and easy to operate. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a photovoltaic support structure installed on the outside of the parapet wall of an existing building according to the present invention.

[0027] Figure 2 This is a schematic diagram of a photovoltaic support structure installed on the outside of the parapet wall of an existing building according to the present invention.

[0028] Figure 3 This is a schematic diagram of the connection structure between the magnified head slide and the photovoltaic panel assembly in this invention;

[0029] Figure 4This is a front view of the connection structure between the magnified head slide and the photovoltaic panel assembly in this invention;

[0030] Figure 5 This is a top view of the connection structure between the enlarged head slide and the photovoltaic panel assembly in this invention;

[0031] Figure 6 This is a schematic diagram of the connection structure between the outer L-shaped plate and the first circular slide in this invention;

[0032] Figure 7 This is a top view of the connection structure between the outer L-shaped plate and the first circular slide in this invention.

[0033] In the diagram: 1. Roof; 2. Top surface of parapet wall; 3. Exterior facade of parapet wall; 4. Photovoltaic panel assembly; 51. Outer inverted L-shaped plate; 511. Limiting slide groove; 52. Inner inverted L-shaped plate; 53. High-torque coil spring; 54. First connecting rod; 55. Second connecting rod; 56. Electromagnetic hydraulic tensioner; 57. First fixing sleeve; 58. Second fixing sleeve; 59. First lever arm; 60. Second lever arm; 61. Rubber anti-collision pad; 62. Circular magnifying head; 7. U-shaped steel plate; 71. Stiffening rib; 72. Socket tooth; 73. First slide rail; 8. Magnifying head slide rail; 81. Fixed slide rail; 82. Sliding base plate; 83. Second slide rail; 84. Connecting plate; 85. First anti-collision spring; 86. Screw; 87. Bottom limiting plate; 88. Slide groove; 89. Second anti-collision spring; 90. Transmission gear. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to specific embodiments. These descriptions are for explanation purposes only and are not intended to limit the scope of the invention.

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0037] This invention provides a photovoltaic support structure installed on the outside of the parapet wall of an existing building, such as... Figure 1 and Figure 2 As shown, it includes a parapet wall top surface 2 and a parapet wall exterior surface 3, as well as multiple main fixing components that are spaced apart and detachably installed on the parapet wall top surface 2. The sidewalls of the main fixing components are fixedly provided with sliding components, and adjacent sliding components are slidably connected to the same photovoltaic panel assembly 4. The photovoltaic panel assembly 4 is vertically spaced on the parapet wall exterior surface 3.

[0038] The main fixing component includes a U-shaped steel plate 7, which is interference-fitted onto the top surface 2 of the parapet wall. An outer inverted L-shaped plate 51 is vertically slidably disposed on one side of the U-shaped steel plate 7 near the outer facade 3 of the parapet wall, and an inner inverted L-shaped plate 52 is obliquely clamped onto the other side. A high-torque coil spring 53 is connected to the top of the outer inverted L-shaped plate 51 and the inner inverted L-shaped plate 52. It should be noted that the bending angles of the outer inverted L-shaped plate 51 and the inner inverted L-shaped plate 52 are both acute angles. The high-torque coil spring 53 can be an electromagnetic coil spring or a mechanical coil spring.

[0039] Preferably, there are multiple U-shaped steel plates 7, which are interlocked with each other on the top surface 2 of the parapet wall. The multiple U-shaped steel plates 7 are vertically slidably provided with the same outer inverted L-shaped plate 51 on one side near the outer facade 3 of the parapet wall, and the other end of the multiple U-shaped steel plates 7 is obliquely interlocked with an inner inverted L-shaped plate 52. Specifically, each main fixing member includes at least two U-shaped steel plates 7. In this embodiment, each main fixing member includes three U-shaped steel plates 7, and the three U-shaped steel plates 7 are arranged at intervals on the top surface 2 of the parapet wall.

[0040] Preferred, such as Figure 6 and Figure 7As shown, a first slide rail 73 is vertically arranged on the side of the U-shaped steel plate 7 near the outer facade 3 of the parapet wall. A limiting slide groove 511 is provided on the outer inverted L-shaped plate 51, and the limiting slide groove 511 is slidably connected to the first slide rail 73. Multiple locking teeth 72 are vertically spaced on the other side of the U-shaped steel plate 7, and the locking teeth 72 engage with the bottom of the inner inverted L-shaped plate 52. Specifically, the U-shaped steel plate 7 is also provided with stiffening ribs 71. The structure formed by the stiffening ribs 71 and the U-shaped steel plate 7 body is fitted onto the top surface 2 of the parapet wall. The stiffening ribs 71 are used to improve the height of the U-shaped steel plate 7. The U-shaped steel plate 7 has good bending and shear strength, and is easy to connect to the first slide rail 73 and set the retaining tooth 72. It should be noted that the bottom of the inner inverted L-shaped plate 52 is provided with a circular enlarged head 62, the size of which is adapted to the retaining tooth 72. In addition, it should be noted that when the outer inverted L-shaped plate 51 and the inner inverted L-shaped plate 52 are removed using the electromagnetic hydraulic tensioner 56, the limiting slide rail 511 will exert a bending deformation tendency on the U-shaped steel plate 7 through the first slide rail 73. Therefore, stiffening ribs 71 are needed to strengthen the strength of the U-shaped steel plate 7.

[0041] Preferably, a first connecting rod 54 is vertically fixed on the side of the outer inverted L-shaped plate 51 near the parapet wall facade 3, and a second connecting rod 55 is fixed on the side wall of the inner inverted L-shaped plate 52. An electromagnetic hydraulic tensioner 56 connects the first connecting rod 54 and the second connecting rod 55. The first connecting rod 54 is parallel to the outer inverted L-shaped plate 51, and the second connecting rod 55 is parallel to the inner inverted L-shaped plate 52. Specifically, in this embodiment, the second connecting rod 55 is connected to the side wall of the inner inverted L-shaped plate 52 via a first lever arm 59. A second fixing sleeve 58 is provided on the side wall of the inner inverted L-shaped plate 52. One end of the lever arm 59 is detachably connected to the second fixed sleeve 58, and the other end is fixedly connected to the second connecting rod 55; the first connecting rod 54 is connected to the side wall of the outer inverted L-shaped plate 51 through the second lever arm 60. The side wall of the outer inverted L-shaped plate 51 is provided with a first fixed sleeve 57. One end of the second lever arm 60 is detachably connected to the first fixed sleeve 57, and the other end is fixedly connected to the first connecting rod 54. It should be noted that the first lever arm 59 is inclined, and its inclined setting will be closer to the building roof 1, which is convenient for personnel operation and safe construction. In addition, the size of the first lever arm 59 can also be appropriately lengthened to effectively increase the lever arm length.

[0042] Preferred, such as Figure 3 , Figure 4 and Figure 5As shown, the sliding assembly includes a fixed slide rail 81 fixedly mounted on the outer inverted L-shaped plate 51. The fixed slide rail 81 has a vertically arranged T-shaped groove 88, and a sliding base plate 82 is arranged inside the T-shaped groove 88. Transmission gears 90 are arranged on both sides of the inner wall of the T-shaped groove 88. The sliding base plate 82 is toothedly connected to the transmission gears 90. The transmission gears 90 are connected to a driving device, which is a drive motor. It should be noted that those skilled in the art can set the power of the drive motor according to the mass carried by the sliding base plate 82. At the same time, the transmission gears 90 can be configured as a single-sided drive with auxiliary transmission on the other side.

[0043] Preferably, the sliding base plate 82 is provided with an enlarged head slide rail 8, and at least one connecting plate 84 is vertically sleeved on the enlarged head slide rail 8. Specifically, in this embodiment, the connecting plate 84 is integrally provided with a second slide rail 83, and the enlarged head slide rail 8 and the second slide rail 83 are sleeved together. The photovoltaic panel assembly 4 is detachably connected to the connecting plate 84. A first anti-collision spring 85 is provided at the top of the connecting plate 84, and a second anti-collision spring 89 is provided at the bottom. A bottom limiting plate 87 is provided at the bottom of the enlarged head slide rail 8. It should be noted that there can be multiple connecting plates 84, and those skilled in the art can stack them according to the length of the enlarged head slide rail 8. Further, a rubber anti-collision pad 61 is provided on the side of the bottom limiting plate 87 near the outer inverted L-shaped plate 51. Since the parapet wall is located at a high point of the building, when the bottom of the photovoltaic panel assembly 4 tends to sway slightly towards the building under wind load, it is used to protect the building and building components. The photovoltaic panel assembly 4 and the connecting plate 84 are detachably connected by screws 86.

[0044] Furthermore, the vertical projections of the axes of the first anti-collision spring 85 and the second anti-collision spring 89 do not coincide. This is so that when multiple photovoltaic panel modules 4 are connected in series, they can buffer each other and protect the photovoltaic panel modules 4.

[0045] This invention provides a method for installing a photovoltaic support structure on the outside of the parapet wall of an existing building, comprising the following steps:

[0046] The U-shaped steel plate 7 is clipped onto the top surface 2 of the parapet wall, and plain concrete is filled into the gap between the U-shaped steel plate 7 and the top surface 2 of the parapet wall.

[0047] The outer inverted L-shaped plate 51 and the inner inverted L-shaped plate 52 are set on both sides of the U-shaped steel plate 7, and the tops of the outer inverted L-shaped plate 51 and the inner inverted L-shaped plate 52 are connected by a high-torque coil spring 53.

[0048] A sliding component is provided on the side wall of the inverted L-shaped plate 51 at the outer end, and the same photovoltaic panel component 4 is slidably connected to adjacent sliding components.

[0049] Specifically:

[0050] S1: Design a U-shaped steel plate 7 of appropriate size according to the size of the existing building's parapet wall, ensuring that the U-shaped steel plate 7 is fitted on the outside of the parapet wall, and fill the gap between the inside of the U-shaped steel plate 7 and the parapet wall with plain concrete; the purpose of filling the gap between the inside of the U-shaped steel plate 7 and the parapet wall with plain concrete in S1 above is to ensure that the U-shaped steel plate 7 is firmly installed and not easily shakes during use.

[0051] S2: Connect the high-torque coil spring 53 to the outer inverted L-shaped plate 51 and the inner inverted L-shaped plate 52;

[0052] S3: Set a first fixed sleeve 57 and a second fixed sleeve 58 at a predetermined position, and connect a first lever arm 59, a second lever arm 60, a second connecting rod 55 and a first connecting rod 54.

[0053] S4: An electromagnetic hydraulic tensioner 56 is set between the second connecting rod 55 and the first connecting rod 54, and a fixed slide rail 81 is welded to the outer end face of the long limb of the outer L-shaped plate 51.

[0054] S5: A sliding base plate 82 and an enlarged head slide 8 are sequentially installed in the fixed slide 81. The positions of the sliding base plate 82 and the enlarged head slide 8 must first be adjusted to a position suitable for connecting the outer inverted L-shaped plate 51 and the inner inverted L-shaped plate 52 to the outside of the U-shaped steel plate 7.

[0055] S6: Connect the limiting slide groove 511 to the first slide rail 73, then start the electromagnetic hydraulic tensioner 56 to connect the outer inverted L-shaped plate 51 and the inner inverted L-shaped plate 52 to the outside of the U-shaped steel plate 7. Finally, snap the circular enlarged head 62 into the slot tooth 72 at a suitable position to complete the installation of the outer inverted L-shaped plate 51 and the inner inverted L-shaped plate 52. It should be noted that the electromagnetic hydraulic tensioner 56 can be adjusted at any time to ensure the smooth installation of the outer inverted L-shaped plate 51 and the inner inverted L-shaped plate 52.

[0056] S7: Release and remove the electromagnetic hydraulic tensioner 56 to ensure that the high-torque coil spring 53 provides maximum torque to the outer inverted L-shaped plate 51 and the inner inverted L-shaped plate 52;

[0057] S8: The position of the sliding base plate 82 and the magnifying head slide 8 is adjusted by controlling the transmission gear 90 through the drive device;

[0058] S9: Connect the connecting plate 84 to the photovoltaic panel module 4, and install the first anti-collision spring 85 and the second anti-collision spring 89;

[0059] S10: Fit the second slide rail 83 onto the outside of the magnifying head slide rail 8, and slowly adjust the installation position of the photovoltaic panel module 4 to complete the final installation;

[0060] It should be noted that, during dismantling, this application should follow the principle of first slowly and safely dismantling multiple photovoltaic panel modules 4, and then using the electromagnetic hydraulic tensioner 56 to unload the torque of the high-torque coil spring 53 before dismantling the outer inverted L-shaped plate 51 and the inner inverted L-shaped plate 52.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photovoltaic support structure installed on the outside of the parapet wall of an existing building, characterized in that, It includes the top surface (2) of the parapet wall and the outer facade (3) of the parapet wall, as well as a number of main fasteners that are spaced apart and detachably installed on the top surface (2) of the parapet wall. The side wall of the main fastener is fixedly provided with a sliding component, and the same photovoltaic panel component (4) is slidably connected to adjacent sliding components. The photovoltaic panel components (4) are vertically spaced on the outer facade (3) of the parapet wall. The main fixing component includes a U-shaped steel plate (7), which is interference-fitted to the top surface (2) of the parapet wall. An outer inverted L-shaped plate (51) is vertically slidably installed on one side of the U-shaped steel plate (7) near the outer facade (3) of the parapet wall, and an inner inverted L-shaped plate (52) is obliquely clamped on the other side. A high-torque coil spring (53) is connected to the top of the outer inverted L-shaped plate (51) and the inner inverted L-shaped plate (52). A first connecting rod (54) is also vertically fixed on one side of the outer inverted L-shaped plate (51) near the outer facade (3) of the parapet wall. A second connecting rod (55) is fixedly installed on the side wall of the inner inverted L-shaped plate (52). An electromagnetic hydraulic tensioner (56) is connected between the first connecting rod (54) and the second connecting rod (55). The first connecting rod (54) is arranged parallel to the outer inverted L-shaped plate (51), and the second connecting rod (55) is arranged parallel to the inner inverted L-shaped plate (52).

2. The photovoltaic support structure installed on the outside of the parapet wall of an existing building according to claim 1, characterized in that, The U-shaped steel plates (7) are multiple and are interlocked with each other on the top surface (2) of the parapet wall. The multiple U-shaped steel plates (7) are vertically slidably provided with the same outer inverted L-shaped plate (51) on the side of the parapet wall near the outer facade (3). The other end of the multiple U-shaped steel plates (7) is inclinedly connected with an inner inverted L-shaped plate (52).

3. The photovoltaic support structure installed on the outside of the parapet wall of an existing building according to claim 1, characterized in that, The U-shaped steel plate (7) has a first slide rail (73) vertically arranged on one side near the parapet wall exterior (3). The outer end inverted L-shaped plate (51) is provided with a limiting slide groove (511), and the limiting slide groove (511) is slidably connected to the first slide rail (73). The other side of the U-shaped steel plate (7) has a plurality of locking teeth (72) vertically spaced, and the locking teeth (72) are engaged with the bottom of the inner end inverted L-shaped plate (52).

4. The photovoltaic support structure installed on the outside of the parapet wall of an existing building according to claim 1, characterized in that, The sliding assembly includes a fixed slide rail (81) fixedly mounted on an inverted L-shaped plate (51) at the outer end. The fixed slide rail (81) is vertically provided with a T-shaped groove (88). A sliding base plate (82) is provided inside the T-shaped groove (88). Transmission gears (90) are provided on both sides of the inner wall of the T-shaped groove (88). The sliding base plate (82) is connected to the transmission gears (90).

5. A photovoltaic support structure installed on the outside of the parapet wall of an existing building according to claim 4, characterized in that, The transmission gear (90) is connected to a drive device.

6. A photovoltaic support structure installed on the outside of the parapet wall of an existing building according to claim 4, characterized in that, The sliding base plate (82) is provided with an enlarged head slide (8), and at least one connecting plate (84) is vertically sleeved on the enlarged head slide (8). The connecting plate (84) is detachably connected to a photovoltaic panel assembly (4). The top of the connecting plate (84) is provided with a first anti-collision spring (85), and the bottom is provided with a second anti-collision spring (89). The bottom of the enlarged head slide (8) is provided with a bottom limit plate (87).

7. A photovoltaic support structure installed on the outside of the parapet wall of an existing building according to claim 6, characterized in that, A rubber anti-collision pad (61) is provided on the side of the bottom limiting plate (87) near the outer inverted L-shaped plate (51). The photovoltaic panel assembly (4) and the connecting plate (84) are detachably connected by screws (86); The connecting plate (84) is integrally provided with a second slide rail (83), and the enlarged head slide rail (8) is sleeved with the second slide rail (83).

8. A photovoltaic support structure installed on the outside of the parapet wall of an existing building according to claim 6, characterized in that, The vertical projections of the first anti-collision spring (85) and the second anti-collision spring (89) do not coincide.

9. A method for installing a photovoltaic support structure located on the outside of the parapet wall of an existing building, characterized in that, Based on the photovoltaic support structure installed on the outside of the parapet wall of an existing building as described in any one of claims 1-8, Includes the following steps: The U-shaped steel plate (7) is snapped onto the top surface (2) of the parapet wall, and plain concrete is filled into the gap between the U-shaped steel plate (7) and the top surface (2) of the parapet wall. The outer inverted L-shaped plate (51) and the inner inverted L-shaped plate (52) are set on both sides of the U-shaped steel plate (7), and the top of the outer inverted L-shaped plate (51) and the inner inverted L-shaped plate (52) are connected by a high-torque coil spring (53); A sliding assembly is provided on the side wall of the inverted L-shaped plate (51) at the outer end, and the same photovoltaic panel assembly (4) is slidably connected to adjacent sliding assemblies.

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