Adjustable photovoltaic support used on parapet wall and photovoltaic device

Abstract

The utility model discloses an adjustable photovoltaic support used on a parapet wall and a photovoltaic device, the photovoltaic support comprises an installation pedestal installed on the top surface of the parapet wall, a fixed core shaft and a rotating winding drum, and 360-degree rotation of an integral structure above a rotating shaft in the horizontal direction can be realized by adjusting brake buckles on the installation pedestal and the rotating winding drum; a double-layer supporting plate is installed on the rotating winding drum to support a square connecting plate above the double-layer supporting plate, a steel stand column, one end of a transverse ball head air pressure supporting rod and one end of a vertical ball head air pressure supporting assembly are fixed to the square connecting plate through bolts and L-shaped connecting pieces, and photovoltaic assemblies are fixed to a steel structure transverse support and a steel structure vertical support. The extension end of the vertical support is fixedly connected with a square steel tube connecting support, the components are used for fixing the ball head air pressure supporting rod and the steel stand column, the vertical angle of the photovoltaic panel assembly receiving sunlight can be adjusted by adjusting the length of the fixed ball head air pressure supporting rod, and the horizontal angle and the vertical angle can be adjusted at the same time according to actual needs. And more effective utilization of solar energy above the parapet wall is realized.

Description

Technical Field

[0001] The utility model relates to the field of building solar photovoltaics, in particular to an adjustable photovoltaic bracket and a photovoltaic device used on a parapet. Background Art

[0002] Green buildings need to make efficient use of natural resources to reduce their own energy consumption. At present, photovoltaic modules are often installed on the roof of the building. The parapet refers to a low wall used for protection on the outer edge of the building roof. The sunlight time above the parapet is sufficient. Effective use of it can avoid the problem of a large amount of energy waste. In order to avoid the shading of the parapet, most photovoltaic modules are set in the middle of the roof, or some elevated brackets are used to allow photovoltaic modules to better convert solar energy into electricity. However, the problem is that the installation position of photovoltaic modules on the roof of the building is limited. When there is insufficient space in the middle part of the roof or there are other facilities, it is inconvenient to install photovoltaic modules. The method of installing photovoltaic modules with elevated brackets not only increases the material cost, but also affects the stability of the bracket. At present, there is no bracket that can directly install photovoltaic modules on the parapet, which cannot achieve the goal of not occupying the space in the middle part of the top of the building, avoiding the shading of the parapet, and efficiently utilizing light energy.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable photovoltaic bracket and photovoltaic device for use on a parapet, which can support the photovoltaic components installed on the parapet of the building roof, and facilitate the adjustment of the horizontal and vertical angles of the photovoltaic components, efficiently utilize solar energy, and thus solve the above-mentioned technical problems existing in the prior art.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] An adjustable photovoltaic bracket for use on a parapet, comprising:

[0007] Installation base, fixed spindle, rotating drum, brake buckle, double-layer support plate, connecting plate, steel column, L-shaped connecting assembly, cylindrical connecting piece, connecting steel plate, photovoltaic module support frame, horizontal ball head gas pressure support rod and vertical ball head gas pressure support assembly; among them,

[0008] The mounting base is provided with a plurality of fixing bolts, and can be fixedly mounted on the parapet by the fixing bolts;

[0009] The fixed mandrel is fixedly arranged on the mounting base;

[0010] The rotating reel is movably arranged on the fixed mandrel and can rotate freely on the fixed mandrel;

[0011] One end of the brake buckle is fixedly connected to the mounting base, and the other end is fixedly connected to the rotating drum, so as to lock the relative position of the rotating drum on the mounting base;

[0012] The double-layer support plate is fixedly arranged on the rotating drum and can rotate together with the rotating drum;

[0013] The connecting plate is fixedly arranged on the double-layer supporting plate;

[0014] The bottom end of the steel column is connected to the connecting plate through the L-shaped connecting assembly, and the steel column is vertically arranged on the connecting plate;

[0015] The cylindrical connecting piece is movably arranged at the top of the steel column and can rotate freely within a predetermined plane at the top of the steel column;

[0016] The connecting steel plate is fixedly arranged on the cylindrical connecting piece and can be used to install the junction box of the photovoltaic module;

[0017] The bottom end of the photovoltaic component support frame is connected to the L-shaped connection assembly at the lower end of the steel column through the transverse ball head air pressure support rod, the upper middle part of the photovoltaic component support frame is connected to the junction box arranged on the connecting steel plate, and the upper end of the photovoltaic component support frame is connected to the L-shaped connection assembly at the lower end of the steel column through the vertical ball head air pressure support assembly. The photovoltaic component can be installed and the angle of the photovoltaic component in the horizontal direction can be adjusted under the action of the transverse ball head air pressure support rod, and the angle of the photovoltaic component in the vertical direction can be adjusted under the action of the vertical ball head air pressure support assembly.

[0018] A photovoltaic device, comprising:

[0019] Photovoltaic assembly and the adjustable photovoltaic bracket used on the parapet described in the utility model;

[0020] The photovoltaic assembly is fixedly mounted on the adjustable photovoltaic bracket used on the parapet, and can be mounted on the parapet through the adjustable photovoltaic bracket and the horizontal angle and the vertical angle can be adjusted.

[0021] Compared with the prior art, the adjustable photovoltaic bracket and photovoltaic device for use on the parapet provided by the utility model have the following beneficial effects:

[0022] By sequentially arranging a fixed mandrel, a rotating drum, a double-layer support plate, a connecting plate and a steel column on the mounting base, the lower end of the steel column is fixed by an L-shaped connecting assembly and positioned by a brake buckle, a cylindrical connecting piece and a photovoltaic component support frame for convenient installation of photovoltaic components and junction boxes are arranged on the upper end of the steel column, the photovoltaic component support frame and the L-shaped connecting assembly are connected by a horizontal ball head air pressure support rod and a vertical ball head air pressure support assembly, the entire adjustable photovoltaic bracket can be conveniently installed on the parapet by using the mounting base, and the photovoltaic component support frame supported by the steel column can be horizontally adjusted by rotating the drum. Rotate 360°, adjust the brake buckle on the buckle connection hole on the rotating drum to fix the optimal angle of the upper structure, adjust the length of the vertical ball head air pressure support assembly and change the bolt position of the cylindrical connector and the L-shaped connection assembly to adjust the vertical angle of the photovoltaic assembly to receive sunlight. Through horizontal and vertical angle adjustment, the photovoltaic assembly can be better exposed to sunlight, increase the sunlight time, and improve the photoelectric conversion efficiency, so as to achieve more effective use of solar energy above the parapet, avoid a lot of energy waste, and make efficient use of natural resources. The overall photovoltaic bracket structure has stable support, simple installation, and convenient disassembly. The operation of adjusting the angle of the photovoltaic panel assembly to receive sunlight is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic structural diagram of an adjustable photovoltaic bracket for use on a parapet provided in an embodiment of the utility model.

[0025] Figure 2 A schematic diagram of the connection between the brake buckle and the rotating drum of the adjustable photovoltaic support on the parapet provided in an embodiment of the utility model.

[0026] The markings in the figure are: 1-parapet; 2-circular mounting base; 3-bolt; 4-fixed core shaft; 5-rotating drum; 6-brake buckle; 7-double-layer support plate; 8-square connecting plate; 9-L-type connecting assembly; 10-horizontal ball head pneumatic support rod; 11-steel column; 12-cylindrical connecting piece; 13-connecting steel plate; 14-junction box; 15-photovoltaic module; 16-horizontal support of steel structure; 17-vertical support of steel structure; 18-square steel pipe connecting support; 19-vertical ball head pneumatic support rod assembly. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments, which does not constitute a limitation of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0028] First, the terms that may be used in this article are explained as follows:

[0029] The term “and / or” means that either or both of them can be realized at the same time. For example, X and / or Y means both “X” or “Y” and “X and Y”.

[0030] The terms "include", "comprises", "contains", "has" or other descriptions with similar semantics should be interpreted as non-exclusive inclusion. For example, including certain technical feature elements (such as raw materials, components, ingredients, carriers, dosage forms, materials, dimensions, parts, components, mechanisms, devices, steps, procedures, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products or products, etc.) should be interpreted as including not only certain technical feature elements explicitly listed, but also other technical feature elements known in the art that are not explicitly listed.

[0031] The term "consisting of..." means excluding any technical feature elements not explicitly listed. If this term is used in a claim, it will make the claim closed, so that it does not contain technical feature elements other than the technical feature elements explicitly listed, except for the conventional impurities related to them. If this term only appears in a clause of a claim, it only limits the elements explicitly listed in the clause, and the elements recorded in other clauses are not excluded from the overall claim.

[0032] Unless otherwise specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0033] The orientation or position relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings and are only for the convenience and simplification of description, and do not explicitly or implicitly indicate that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation of this document.

[0034] The scheme provided by the utility model is described in detail below. The contents not described in detail in the embodiments of the utility model belong to the prior art known to professional and technical personnel in the field. If no specific conditions are specified in the embodiments of the utility model, the conditions are carried out according to the conventional conditions in the field or the conditions recommended by the manufacturer. If the manufacturers of the reagents or instruments used in the embodiments of the utility model are not specified, they are all conventional products that can be purchased commercially.

[0035] like Figure 1 As shown, the embodiment of the utility model provides an adjustable photovoltaic bracket for use on a parapet, comprising:

[0036] Installation base 2, fixed spindle 4, rotating drum 5, brake buckle 6, double-layer support plate 7, connecting plate 8, steel column 11, L-shaped connecting assembly 9, cylindrical connecting piece 12, connecting steel plate 13, photovoltaic module support frame, horizontal ball head gas pressure support rod 10 and vertical ball head gas pressure support assembly 19; wherein,

[0037] The mounting base 2 is provided with a plurality of fixing bolts, and can be fixedly mounted on the parapet by the fixing bolts;

[0038] The fixed mandrel 4 is fixedly arranged on the mounting base 2;

[0039] The rotating reel 5 is movably arranged on the fixed mandrel 4 and can rotate freely on the fixed mandrel 4;

[0040] One end of the brake buckle 6 is fixedly connected to the mounting base 2, and the other end is fixedly connected to the rotating drum 5, so as to lock the relative position of the rotating drum 5 on the mounting base 2;

[0041] The double-layer support plate 7 is fixedly arranged on the rotating drum 5 and can rotate together with the rotating drum 5;

[0042] The connecting plate 8 is fixedly arranged on the double-layer supporting plate 7;

[0043] The bottom end of the steel column 11 is connected to the connecting plate 8 through the L-shaped connecting assembly 9, and the steel column 11 is vertically arranged on the connecting plate 8;

[0044] The cylindrical connecting member 12 is movably arranged at the top of the steel column 11 and can rotate freely within a predetermined plane at the top of the steel column 11;

[0045] The connecting steel plate 13 is fixedly arranged on the cylindrical connecting member 12, and can be used to install the junction box 14 of the photovoltaic module 15, and the junction box 14 is connected to the middle and upper part of the photovoltaic module support frame;

[0046] The bottom end of the photovoltaic component support frame is connected to the L-shaped connection component 9 at the lower end of the steel column 11 through the transverse ball head gas pressure support rod 10, the upper and middle part of the photovoltaic component support frame is connected to the junction box 14 arranged on the connecting steel plate 13, and the upper end of the photovoltaic component support frame is connected to the L-shaped connection component 9 at the lower end of the steel column 11 through the vertical ball head gas pressure support component 19. The photovoltaic component can be installed and the angle of the photovoltaic component in the horizontal direction can be adjusted under the action of the transverse ball head gas pressure support rod 10, and the angle of the photovoltaic component in the vertical direction can be adjusted under the action of the vertical ball head gas pressure support component 19.

[0047] Preferably, in the above-mentioned adjustable photovoltaic bracket, the vertical ball head pneumatic support assembly 19 is composed of two vertical ball head pneumatic support rods, which are arranged on both sides of the steel column 11, and the upper end of each vertical ball head pneumatic support rod is connected to the upper end of the photovoltaic assembly support frame, and the lower end of each vertical ball head pneumatic support rod is connected to the L-shaped connection assembly 9.

[0048] Preferably, in the above-mentioned adjustable photovoltaic bracket, the L-shaped connection assembly 9 is composed of six L-shaped connectors, and the six L-shaped connectors are arranged in groups of three on both sides of the lower end of the steel column 11 to fix the lower end of the steel column 11 to the connecting plate 8.

[0049] Preferably, in the above-mentioned adjustable photovoltaic support, the photovoltaic assembly support frame includes: three steel structure lateral supports, two steel structure vertical supports and a square steel pipe connecting support; wherein,

[0050] Two steel structure vertical supports are arranged at intervals vertically, three steel structure transverse supports are arranged at intervals horizontally on the two steel structure vertical supports from top to bottom, and a square steel pipe connecting support is arranged horizontally and fixedly connected to the bottom ends of the two steel structure vertical supports;

[0051] Among the three steel structure transverse supports, the uppermost steel structure transverse support is connected to the upper end of the vertical ball head gas pressure support assembly 19;

[0052] The square steel tube connecting support is connected to one end of the transverse ball head gas pressure support rod 10.

[0053] Preferably, in the above-mentioned adjustable photovoltaic support, the mounting base 2 is a circular mounting base, and the diameter of the circular mounting base matches the width of the installed parapet.

[0054] See also Figure 2 Preferably, in the above-mentioned adjustable photovoltaic bracket, the lower end of the brake buckle 6 is fixedly connected to the base 2, and the upper end is fixedly connected to a buckle connection ring on the rotating drum 5, and the relative position of the rotating drum 5 on the base 2 can be adjusted by changing the connected buckle connection ring. The brake buckle of such a structure cooperates with the rotating drum, and after adjusting the angle of the photovoltaic module supported on the rotating drum 5, the brake buckle 6 can lock the angle.

[0055] The utility model also provides a photovoltaic device, including:

[0056] Photovoltaic components and the above-mentioned adjustable photovoltaic bracket for use on the parapet;

[0057] The photovoltaic assembly is fixedly mounted on the adjustable photovoltaic bracket used on the parapet, and can be mounted on the parapet through the adjustable photovoltaic bracket and the horizontal angle and the vertical angle can be adjusted.

[0058] In summary, it can be seen that the adjustable photovoltaic bracket of the utility model can conveniently install the photovoltaic components on the parapet, and can conveniently adjust the horizontal and vertical angles of the photovoltaic components, so as to achieve more effective use of the solar energy above the parapet, avoid a large amount of energy waste, and efficiently utilize natural resources.

[0059] In order to more clearly demonstrate the technical solution and technical effects provided by the present invention, the solution provided by the embodiments of the present invention is described in detail with specific embodiments below.

[0060] Example 1

[0061] The utility model provides an adjustable photovoltaic bracket for use on a parapet, which can be used to install photovoltaic modules on the parapet of a building roof. Figure 1 As shown, the adjustable photovoltaic bracket mainly includes: a mounting base 2, a fixed core shaft 4, a rotating drum 5, a brake buckle 6, a double-layer support plate 7, a square connecting plate 8, an L-shaped connecting component 9, a horizontal ball head gas pressure support rod 10, a steel column 11, a photovoltaic component support frame and a vertical ball head gas pressure support component 19; wherein,

[0062] The mounting base 2 is a circular mounting base, and its diameter matches the width of the installed parapet. The mounting base 2 is fixed to the top of the parapet 1 with bolts 3. A fixed core shaft 4 and a rotatable rotating drum 5 are installed on the mounting base 2, so that the upper structure can rotate 360°. A special brake buckle 6 is installed on the mounting base 2 and the rotating drum 5. By changing the brake buckle 6 and the buckle connection hole on the rotating drum 5, the rotation position of the rotating drum 5 can be controlled, thereby adjusting the horizontal direction of the upper photovoltaic assembly 15. A double-layer support plate 7 is installed on the rotating drum 5 to support the square connecting plate 8 above. An L-shaped connecting assembly 9 consisting of 6 L-shaped connectors is bolted to the square connecting plate 8. The two middle L-shaped connectors 9 are used to install and fix one end of a steel column 11. The steel column 11 mainly bears the weight of the photovoltaic module. The L-shaped connectors 9 on both sides are used to fix one end of a transverse ball head gas pressure support rod 10. The three steel structure transverse supports 16 installed on the photovoltaic module 15 are bolted to two steel structure vertical supports 17. The two steel structure vertical supports 17 extend at the lower end and are fixedly connected to a square steel pipe connecting support 18 through a connector. The other end of the transverse ball head gas pressure support rod 10 is connected to the square steel pipe connecting support 1 8, the other ends of the two vertical ball-headed gas pressure support rods 19 constituting the vertical ball-headed gas pressure support assembly are connected to the topmost steel structure horizontal support 16 of the photovoltaic assembly support frame on which the photovoltaic assembly 15 is installed, and the other ends of the steel columns 11 are connected through the cylindrical connector 12 and two L-shaped connectors and the connecting steel plate 13 and then fixed to the junction box 14. The two vertical ball-headed gas pressure support rods 19 constituting the vertical ball-headed gas pressure support assembly can adjust the vertical angle of the solar photovoltaic assembly 15 to receive sunlight by extending and contracting. At this time, the cylindrical connector 12 can synchronously fix the adjustment angle by changing the bolt position, so as to adjust the photovoltaic assembly to achieve the optimal angle for receiving sunlight and improve the photoelectric efficiency.

[0063] In summary, it can be seen that after the installation of the adjustable photovoltaic bracket of the embodiment of the utility model, the rotating shaft of the rotating drum can realize the 360° horizontal rotation of the overall structure above the rotating drum 5. The optimal angle of the upper structure can be fixed by adjusting the buckle connection position of the brake buckle on the rotating drum. By adjusting the length of the fixed horizontal ball head gas pressure support rod and the vertical ball head gas pressure support rod and changing the bolt position of the cylindrical connector and the L-shaped connector, the vertical angle of the photovoltaic panel assembly to receive sunlight can be adjusted. By adjusting the horizontal angle and the vertical angle, the photovoltaic assembly can be better exposed to sunlight, the sunlight time is increased, and the photoelectric conversion efficiency is improved. In this way, more effective use of solar energy above the parapet is achieved, a large amount of energy waste is avoided, and natural resources are used efficiently. The overall photovoltaic bracket has a stable structure, simple installation, and convenient disassembly. The operation of adjusting the angle of the photovoltaic panel assembly to receive sunlight is simple and convenient.

[0064] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims. The information disclosed in the background technology section of this article is only intended to deepen the understanding of the overall background technology of the utility model, and should not be regarded as an admission or in any form that the information constitutes prior art known to those skilled in the art.

Claims

1. An adjustable photovoltaic bracket for use on a parapet, characterized in that: include: A mounting base (2), a fixed spindle (4), a rotating drum (5), a brake buckle (6), a double-layer support plate (7), a connecting plate (8), a steel column (11), an L-shaped connecting assembly (9), a cylindrical connecting piece (12), a connecting steel plate (13), a photovoltaic assembly support frame, a transverse ball head pneumatic support rod (10) and a vertical ball head pneumatic support assembly (19); wherein, The mounting base (2) is provided with a plurality of fixing bolts, and can be fixedly mounted on the parapet by means of the fixing bolts; The fixed core shaft (4) is fixedly arranged on the mounting base (2); The rotating reel (5) is movably arranged on the fixed core shaft (4), and a plurality of buckle connection rings are evenly arranged on the rotating reel along the circumference, so that the rotating reel (5) can freely rotate on the fixed core shaft (4); One end of the brake buckle (6) is fixedly connected to the mounting base (2), and the other end is fixedly connected to a buckle connection ring on the rotating drum (5), so as to lock the relative position of the rotating drum (5) on the mounting base (2); The double-layer support plate (7) is fixedly arranged on the rotating drum (5) and can rotate together with the rotating drum (5); The connecting plate (8) is fixedly arranged on the double-layer supporting plate (7); The bottom end of the steel column (11) is connected to the connecting plate (8) via the L-shaped connecting assembly (9), and the steel column (11) is vertically arranged on the connecting plate (8); The cylindrical connecting piece (12) is movably arranged at the top end of the steel column (11) and can rotate freely within a predetermined plane at the top end of the steel column (11); The connecting steel plate (13) is fixedly arranged on the cylindrical connecting member (12) and can be used to install a junction box (14) of a photovoltaic module (15); The bottom end of the photovoltaic component support frame is connected to the L-shaped connection component (9) at the lower end of the steel column (11) through the transverse ball head air pressure support rod (10), the upper middle part of the photovoltaic component support frame is connected to the junction box (14) arranged on the connecting steel plate (13), and the upper end of the photovoltaic component support frame is connected to the L-shaped connection component (9) at the lower end of the steel column (11) through the vertical ball head air pressure support component (19), so that the photovoltaic component can be installed and the angle of the photovoltaic component in the horizontal direction can be adjusted under the action of the transverse ball head air pressure support rod (10), and the angle of the photovoltaic component in the vertical direction can be adjusted under the action of the vertical ball head air pressure support component (19).

2. The adjustable photovoltaic bracket for use on a parapet according to claim 1, characterized in that: The vertical ball head pneumatic support assembly (19) is composed of two vertical ball head pneumatic support rods, which are arranged on both sides of the steel column (11), and the upper end of each vertical ball head pneumatic support rod is connected to the upper end of the photovoltaic component support frame, and the lower end of each vertical ball head pneumatic support rod is connected to the L-shaped connection assembly (9).

3. The adjustable photovoltaic bracket for use on a parapet according to claim 1 or 2, characterized in that: The L-shaped connection assembly (9) is composed of six L-shaped connection pieces, which are arranged in groups of three on both sides of the lower end of the steel column (11) to fixedly connect the lower end of the steel column (11) to the connection plate (8).

4. The adjustable photovoltaic bracket for use on a parapet according to claim 1 or 2, characterized in that: The photovoltaic module support frame includes: three steel structure horizontal supports, two steel structure vertical supports and a square steel pipe connecting support; wherein, Two steel structure vertical supports are arranged at intervals vertically, three steel structure transverse supports are arranged at intervals horizontally on the two steel structure vertical supports from top to bottom, and a square steel pipe connecting support is arranged horizontally and fixedly connected to the bottom ends of the two steel structure vertical supports; Among the three steel structure transverse supports, the uppermost steel structure transverse support is connected to the upper end of the vertical ball head air pressure support assembly (19); The square steel tube connecting support is connected to one end of the transverse ball head gas pressure support rod (10).

5. The adjustable photovoltaic support for use on a parapet according to claim 1 or 2, characterized in that: The installation base (2) is a circular installation base, the diameter of which matches the width of the installed parapet.

6. The adjustable photovoltaic support for use on a parapet according to claim 1 or 2, characterized in that: The lower end of the brake buckle (6) is fixedly connected to the base (2), and the upper end is fixedly connected to a buckle connection ring on the rotating drum (5). The relative position of the rotating drum (5) on the base (2) can be adjusted by changing the connected buckle connection ring.

7. A photovoltaic device, characterized in that: include: A photovoltaic assembly and an adjustable photovoltaic bracket for use on a parapet as described in any one of claims 1 to 6; The photovoltaic assembly is fixedly mounted on the adjustable photovoltaic bracket used on the parapet, and can be mounted on the parapet through the adjustable photovoltaic bracket and the horizontal angle and the vertical angle can be adjusted.

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