A support device for a photovoltaic module and a photovoltaic system

Abstract

The present invention belongs to the field of photovoltaics, and discloses a support device for a photovoltaic module and a photovoltaic system. The support device includes a purlin, a pressing block and a locking member. The purlin body is a ring-shaped structure with an opening. A first inclined portion is provided at the opening end of the purlin body, and a clamping portion for hooking the photovoltaic module is connected to the first inclined portion; the pressing block abuts against the photovoltaic module, and second inclined portions are respectively provided on both side surfaces of the pressing block, and the pressing block is inserted into the opening of the purlin body; the locking member is arranged on the purlin body and is used to lock the purlin body to the main beam, and at the same time drive the clamping portion to apply a downward force to the end of the photovoltaic module, so as to drive the pressing block to move upward along the first inclined portion to fix the photovoltaic module. The present invention only needs to lock the locking member to complete the installation and fixation of the entire module, simplifies the installation process, improves the installation efficiency, and reduces the installation cost; at the same time, the support can be applied to photovoltaic modules of different thicknesses, realizes the standardization of the purlin design, reduces the production and processing cost, and reduces the difficulty of stock preparation.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaics, and particularly to a bracket device for a photovoltaic module and a photovoltaic system. Background Art

[0002] A solar photovoltaic power generation system is a new type of power generation system that uses the photovoltaic effect of semiconductor materials in solar cells to directly convert solar radiation energy into electrical energy. It mainly consists of three major parts: photovoltaic modules, a controller, and an inverter. A photovoltaic tracker is a component that assists the photovoltaic module to capture incident solar energy to the maximum extent, thereby increasing the amount of solar radiation received by the photovoltaic module and improving the overall power generation.

[0003] Currently, for the component installation of a photovoltaic tracker, 4 bolts are used to anchor the photovoltaic module and the purlin, and at the same time, 2 bolts are used to anchor the purlin and the main beam; due to the use of more bolts, the component installation time is too long, the installation process is cumbersome, and the installation cost is high, resulting in insufficient product competitiveness. In addition, due to the non-uniform specifications and sizes of photovoltaic modules, purlins of different sizes are required to cooperate with the component installation, and the design of the purlins is difficult to standardize, resulting in high production and processing costs and difficult stocking. Summary of the Invention

[0004] The purpose of the present invention is to provide a bracket device for a photovoltaic module and a photovoltaic system, which can not only simplify the installation process and improve the installation efficiency, but also standardize the design of the purlins and reduce the production and processing costs.

[0005] The technical solution provided by the present invention is as follows:

[0006] On the one hand, a bracket device for a photovoltaic module is provided, including:

[0007] A purlin, the purlin includes a purlin body for sleeving on the main beam and a clamping portion. The purlin body is an annular structure with an opening. The first opening end and the second opening end of the purlin body are respectively provided with a first inclined portion. The clamping portion is arranged at one end of the first inclined portion away from the purlin body for hooking the upper surface of the photovoltaic module;

[0008] A pressing block, the upper end of the pressing block is used to abut against the lower surface of the photovoltaic module. The two side surfaces of the lower end of the pressing block are respectively provided with a second inclined portion adapted to the first inclined portion. The lower end of the pressing block is inserted into the opening of the purlin body;

[0009] The locking member is arranged on the purlin body and is used to adjust the distance between the first open end and the second open end, so as to lock the purlin body to the main beam, and at the same time drive the clamping portion to apply a downward force to the end of the photovoltaic module, and at the same time drive the pressing block to move upward along the first inclined portion and apply an upward force to the middle of the photovoltaic module to realize the fixation of the photovoltaic module.

[0010] In this solution, the purlin, the pressing block and the locking member are pre-assembled in the factory. At the construction site, only the locking member needs to be tightened to complete the anchoring of the photovoltaic module to the main beam, which simplifies the installation process and improves the installation efficiency. Moreover, the bracket device in this solution can be used to anchor photovoltaic modules with different thicknesses, and the purlin can achieve design standardization to reduce production and processing costs and reduce the difficulty of stocking.

[0011] Further preferably, it further includes a pressure strip, and the pressure strip is arranged in the opening of the purlin body;

[0012] The pressure strip includes a bottom plate, a first side plate and a second side plate, and the first side plate and the second side plate are respectively arranged on both sides of the bottom plate;

[0013] The bottom plate is used to abut against the main beam, and the lower end of the pressing block is inserted between the first side plate and the second side plate.

[0014] In this solution, a pressure strip is arranged inside the purlin. The pressure strip can tightly press the straight section on the D-shaped main beam, and the annular purlin body can hoop the arc section of the D-shaped main beam. The combined force generated by the cooperation of the pressure strip and the purlin body locks and fixes the main beam, and prevents the purlin from rotating around the main beam.

[0015] Further preferably, the locking member is a bolt group, including a bolt and a nut;

[0016] Through holes are provided on the open end of the purlin body, the pressing block, and the first side plate and the second side plate;

[0017] The bolt passes through the through holes on the open end of the purlin body, the pressing block, and the first side plate and the second side plate;

[0018] The nut is arranged on the bolt.

[0019] In this solution, the locking member can adopt a specific combination of bolts and nut washers to achieve a loosening effect, and the upward component force generated by pre-tightening the purlin with bolts locks the photovoltaic module.

[0020] Further preferably, the clamping portion includes a vertical section and a claw section;

[0021] One end of the vertical section is connected to the first inclined portion;

[0022] The jaw segment is arranged at the other end of the vertical segment and is used to hook the upper surface of the photovoltaic module.

[0023] Further preferably, the number of the jaw segments is two;

[0024] The two jaw segments are respectively arranged on both sides of the vertical segment along the extension direction of the main beam.

[0025] In this solution, jaw segments are arranged on both sides of the vertical segment, so that when the bracket device is installed, the front and back directions do not need to be distinguished, reducing the operation difficulty for users.

[0026] Further preferably, the purlin further includes a connecting portion;

[0027] The vertical segment of the clamping portion is connected to the first inclined portion through the connecting portion.

[0028] Further preferably, the purlin further includes a reinforcing rib;

[0029] One end of the reinforcing rib is fixedly connected to the purlin body, and the other end of the reinforcing rib is fixedly connected to one end of the connecting portion.

[0030] In this solution, a reinforcing rib is arranged between the clamping portion and the purlin body, which can not only improve the overall stability of the purlin, but also prevent the clamping portion from breaking, and improve the service life of the anchoring device.

[0031] Further preferably, the number of the clamping portion, the connecting portion and the reinforcing rib is two, and they are symmetrically arranged on both sides perpendicular to the extension direction of the main beam.

[0032] In this solution, two clamping portions are provided, so that the purlin hooks the photovoltaic module on both sides of the pressing block and forms a three-point stable anchoring with the pressing block, improving the stability and anchoring effect of the anchoring.

[0033] On the other hand, a photovoltaic system is further provided, including a main beam, a photovoltaic module and the bracket device of the above-mentioned photovoltaic module;

[0034] The main beam is arranged on the lower surface of the photovoltaic module;

[0035] The purlin body is sleeved on the main beam, and the clamping portion hooks the upper surface of the photovoltaic module;

[0036] By adjusting the distance between the first opening end and the second opening end through the locking member, the purlin body is locked to the main beam, and at the same time, the clamping portion is driven to apply a downward force to the end of the photovoltaic module, and at the same time, the pressing block is driven to move upward along the first inclined portion and apply an upward force to the middle of the photovoltaic module to realize the fixation of the photovoltaic module.

[0037] Further preferably, the cross-section of the main beam is D-shaped. The main beam includes a flat portion and a circular ring portion extending along its length direction. The circular ring portion is in contact with the inner side wall of the purlin body, and the flat portion abuts against the bottom plate of the pressing strip arranged in the opening of the purlin body.

[0038] The technical effect of the present invention is as follows: When the locking member locks to reduce the distance between the first opening end and the second opening end, the purlin locks the main beam and is fixedly connected to the main beam. Moreover, the first inclined portion on the purlin squeezes the second inclined portion on the pressing block upward, causing the pressing block to tightly press the photovoltaic module upward. At the same time, after the purlin is locked, the clamping portion on the purlin will tightly hook the photovoltaic module downward. The upward force generated by the pressing block on the lower surface of the photovoltaic module and the downward force generated by the purlin on the upper surface of the photovoltaic module are used to lock the photovoltaic module, and finally the fixed connection between the main beam and the photovoltaic module is realized. The pressing block, purlin, and locking member of the present invention can be pre-assembled in the factory. During the construction site, only by locking the locking member can the installation and fixation of the entire module be completed, which not only simplifies the installation process, but also shortens the installation duration, improves the installation efficiency, and reduces the installation cost. In addition, the bracket device in the present invention can be used to anchor photovoltaic modules with different thicknesses, and the purlin can achieve design standardization to reduce the production and processing costs and the difficulty of stock preparation. Description of the Drawings

[0039] The following further describes the present invention in detail with reference to the drawings and specific embodiments:

[0040] Figure 1 is a schematic structural diagram of a photovoltaic system of the present invention;

[0041] Figure 2 is Figure 1 the enlarged view of part A in

[0042] Figure 3 is the front view when the bracket device of a photovoltaic module of the present invention is anchored on the photovoltaic module;

[0043] Figure 4 is the schematic structural diagram of the purlin of the bracket device of a photovoltaic module of the present invention;

[0044] Figure 5 is the schematic structural diagram of the pressing block of the bracket device of a photovoltaic module of the present invention;

[0045] Figure 6 is the schematic structural diagram of the pressing strip of the bracket device of a photovoltaic module of the present invention;

[0046] Figure 7 is the schematic structural diagram of the locking member of the bracket device of a photovoltaic module of the present invention.

[0047] Explanation of the Reference Numerals in the Drawings:

[0048] 1. Purlin; 11. Purlin body; 111. First open end; 112. Second open end; 12. First inclined portion; 13. Clamping portion; 131. Vertical section; 132. Claw section; 14. Vertical portion; 15. Reinforcing rib; 16. Connecting portion; 2. Pressing block; 21. Second inclined portion; 22. Cavity; 3. Locking member; 4. Main beam; 5. Photovoltaic module; 6. Pressure strip; 61. Bottom plate; 62. First side plate; 63. Second side plate. Detailed implementation manner

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0050] To make the drawings concise, only the parts related to the present invention are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation.

[0051] It should also be further understood that the term "and / or" used in the description of this application specification and the appended claims refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0052] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0054] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will describe the specific embodiments of the present invention with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other embodiments can also be obtained.

[0055] The present invention provides a bracket device for a photovoltaic module, as Figures 1 to 3 shown, including a purlin 1, a pressing block 2, and a locking member 3. As Figure 4 shown, the purlin 1 includes a purlin body 11 for sleeving on a main beam 4 and a clamping portion 13. The purlin body 11 is an annular structure with an opening. The purlin body 11 is sleeved on the main beam 4, and the shape of the purlin body 11 is adapted to the shape of the main beam 4. When the opening ends of the purlin body 11 are locked, the purlin body 11 can be locked to the main beam 4 and fixedly connected to the main beam 4.

[0056] As Figure 4 shown, a first inclined portion 12 is respectively provided at the first opening end 111 and the second opening end 112 of the purlin body 11. Herein, the first opening end 111 and the second opening end 112 refer to the two ends of the purlin body 11 at the opening. A vertical portion 14 is also respectively provided between the first opening end 111 and the second opening end 112 and the first inclined portion 12. When the locking member 3 is a bolt group, a through hole for the bolt to pass through can also be provided on the vertical portion 14, so that the bolt group can lock the purlin body 11 by reducing the distance between the first opening end 111 and the second opening end 112.

[0057] As Figure 4 shown, the clamping portion 13 is provided at one end of the first inclined portion 12 away from the purlin body 11 for hooking the upper surface of the photovoltaic module 5. The clamping portion 13 can be provided with one or two. When one clamping portion 13 is provided, the clamping portion 13 is connected to the first inclined portion 12 at only one opening end of the purlin body 11. When two clamping portions 13 are provided, the clamping portion 13 is connected to the first inclined portion 12 at each opening end of the purlin body 11. When one clamping portion 13 is provided, only one end of the purlin 1 is clamped to the upper surface of the photovoltaic module 5. Although it can play a fixing role, the fixing effect is far inferior to that when both ends of the purlin 1 are provided with clamping portions 13 to fix the photovoltaic module 5. The end of the first inclined portion 12 on the first opening end 111 connected to the clamping portion 13 is inclined in a direction away from the second opening end 112, and the end of the first inclined portion 12 on the second opening end 112 connected to the clamping portion 13 is inclined in a direction away from the first opening end 111.

[0058] As Figure 4As shown in the figure, the clamping part 13 on the purlin 1 includes a vertical section 131 and a claw section 132; one end of the vertical section 131 is connected to the first inclined part 12, and the claw section 132 is arranged at the other end of the vertical section 131 for hooking the upper surface of the photovoltaic module 5. The claw section 132 is a flat plate structure, and the surface in contact with the photovoltaic module 5 is a toothed structure, which can increase the friction between the claw section 132 and the photovoltaic module 5, thereby improving the connection stability between the clamping part 13 and the photovoltaic module 5. Preferably, the number of the claw sections 132 is two; the two claw sections 132 are respectively arranged on both sides of the vertical section 131 along the axial direction of the main beam 4. One claw section 132 is arranged on each side of the top of the vertical section 131, and the two claw sections 132 can respectively hook the edges of two adjacent photovoltaic modules 5 to fix multiple photovoltaic modules 5 at the same time, saving the required installation brackets and reducing costs.

[0059] Preferably, the purlin 1 further includes a connecting part 16, and the vertical section 131 of the clamping part 13 is connected to the first inclined part 12 through the connecting part 16. By setting the connecting part 16, the distance between the clamping part 13 and the opening of the purlin 1 can be increased to expand the stress range of the photovoltaic module 5, thereby improving the anchoring force of the bracket on the photovoltaic module 5.

[0060] As Figure 5 shown in the figure, the upper end of the pressing block 2 is used to abut against the lower surface of the photovoltaic module 5. The two side surfaces of the lower end of the pressing block 2 along the direction perpendicular to the extension direction of the main beam 4 are respectively provided with second inclined parts 21 adapted to the first inclined part 12, and the lower end of the pressing block 2 is inserted into the opening of the purlin body 11. The upper end and the lower end of the pressing block 2 are oppositely arranged, the upper end is the top end of the pressing block 2, and the lower end is the bottom end of the pressing block 2. Among them, the surface of the upper end is a flat structure, and by using the flat structure to abut against the lower surface of the photovoltaic module 5, the contact area with the photovoltaic module 5 can be increased, thereby improving the abutting force on the photovoltaic module 5. The second inclined part 21 arranged on the side surface of the lower end of the pressing block 2 has an inclined direction opposite to that of the first inclined part 12.

[0061] As Figure 3 shown in the figure, the locking part 3 is arranged on the purlin body 11 and is used to adjust the distance between the first opening end 111 and the second opening end 112, so that the purlin body 11 locks the main beam 4, and at the same time drives the clamping part 13 to apply a downward force to the end of the photovoltaic module 5, and at the same time drives the pressing block 2 to move upward along the first inclined part 12 and apply an upward force to the middle of the photovoltaic module 5 to realize the fixation of the photovoltaic module 5.

[0062] As Figure 7As shown, the locking member 3 can be a bolt group, which includes bolts, nuts and washers. Through holes are provided on the vertical portion 14 of the purlin body 11 and the pressure block 2. The purlin 1, the pressure block 2 and the bolt group can be pre-assembled in the factory. During pre-assembly, the pressure block 2 is inserted into the opening of the purlin body 11, and then the bolts are passed through the through holes on the purlin body 11 and the pressure block 2, and washers and nuts are installed on the bolts. In order to facilitate the installation of the purlin 1 and the pressure block 2 on the photovoltaic module 5, the bolt group does not lock the purlin 1 and the pressure block 2 during assembly. At the construction site, the purlin 1 is sleeved on the main beam 4, and the clamping portion 13 is in contact with the upper surface of the photovoltaic module 5, and the nuts are tightened. The distance between the first open end 111 and the second open end 112 is reduced, and the purlin 1 clamps the main beam 4. When the distance between the first open end 111 and the second open end 112 is reduced, the clamping portion 13 is driven to apply force downward to the photovoltaic component 5 to hook the photovoltaic component 5. At the same time, the first inclined portion 12 on the purlin 1 presses the pressing block 2 upward, generating an upward component force on the pressing block 2, so that the upper end of the pressing block 2 presses the lower surface of the photovoltaic component 5. At the same time, the clamping portion 13 of the purlin 1 hooks the upper surface of the photovoltaic component 5, and a three-point fastening is formed by the two clamping portions 13 and the upper end of the pressing block 2 to tightly anchor the photovoltaic component 5, thereby realizing the anchoring connection between the main beam 4 and the photovoltaic component 5.

[0063] In this embodiment, the purlin 1, the pressure block 2 and the locking piece 3 can be pre-assembled in the factory. At the construction site, the purlin 1 is mounted on the main beam 4, and the clamping portion 13 on the purlin 1 is hooked on the upper surface of the photovoltaic module 5. Then, it is only necessary to tighten the locking piece 3 to achieve a fixed connection between the main beam 4 and the photovoltaic module 5, and the installation process is quick and easy. In addition, the bracket device of the present invention can anchor photovoltaic modules 5 of different thicknesses, and the pressure blocks 2 and the purlin 1 can be standardized, thereby reducing the production and processing costs of the pressure blocks 2 and the purlin 1.

[0064] In some embodiments of the present invention, Figure 3 and Figure 6 As shown, the bracket device also includes a pressure strip 6, which is arranged in the opening of the purlin body 11; the pressure strip 6 includes a bottom plate 61, a first side plate 62 and a second side plate 63, and the first side plate 62 and the second side plate 63 are respectively arranged on both sides of the bottom plate 61; the bottom plate 61 is used to abut against the main beam 4, and the lower end of the pressure block 2 is inserted between the first side plate 62 and the second side plate 63.

[0065] Specifically, the bracket device of this embodiment can be applied to a D-shaped main beam 4, which includes a circular ring segment and a straight line segment, and the straight line segment of the D-shaped main beam 4 is arranged close to the lower surface of the photovoltaic module 5. The bottom plate 61 of the pressure strip 6 is arranged parallel to the straight line segment of the D-shaped main beam 4, and the bottom plate 61 can be a plane plate or a plurality of strip-shaped components arranged at intervals. Since the contact area between the plane plate and the main beam 4 is larger than that of the strip-shaped components, the anchoring effect is better when the lower surface of the bottom plate 61 is a plane plate.

[0066] When the bracket device is pre-assembled in the factory, first insert one end of the pressure strip 6 with the bottom plate 61 into the opening of the purlin 1, and then insert the lower end of the pressing block 2 into the pressure strip 6, so that the pressing block 2 is located between the first side plate 62 and the second side plate 63 of the pressure strip 6. Through holes for bolts to pass through may be provided on the first side plate 62 and the second side plate 63 of the pressure strip 6. The bolts pass through the through holes on the purlin 1, the pressing block 2, the first side plate 62 and the second side plate 63, and nuts and washers are arranged on the bolts to connect the purlin 1, the pressing block 2 and the pressure strip 6 together to form a whole, so as to simplify the assembly of components at the construction site, improve the installation efficiency, and prevent the loss of components when multiple components are pre-assembled together.

[0067] When installing the bracket device at the construction site, the annular part of the purlin 1 is sleeved on the D-shaped main beam 4, the open end of the purlin 1 is located above the straight section of the D-shaped main beam 4, the bottom plate 61 of the pressure strip 6 abuts against the straight section of the D-shaped main beam 4, the clamping part 13 of the purlin 1 hooks the upper surface of the photovoltaic module 5. After the purlin 1 is locked, the cooperation between the purlin 1 and the pressure strip 6 can not only lock the main beam 4, but also prevent the purlin 1 from rotating around the main beam 4. At the same time, the first inclined part 12 and the second inclined part 21 on the purlin 1 cooperate to squeeze the pressing block 2 upward, applying an upward force to the photovoltaic module 5, so that a combined force is generated between the pressing block 2 and the clamping part 13 on the purlin 1 to lock the photovoltaic module 5, realizing the fixed connection between the main beam 4 and the photovoltaic module 5.

[0068] As Figure 5 shown, the pressing block 2 is of an inverted trapezoidal structure, and the upper end area of the pressing block 2 is larger for abutting against the photovoltaic module 5 upward. The two side surfaces at the lower end of the pressing block 2 are the second inclined parts 21. The pressing block 2 can be set as a hollow structure to form a cavity 22, and the bolts can directly pass through the cavity 22 to fix the purlin 1 and the pressing block 2.

[0069] In some embodiments of the present invention, as Figure 3 and Figure 4 shown, the purlin 1 further includes a reinforcing rib 15; one end of the reinforcing rib 15 is fixedly connected to the purlin body 11, and the other end of the reinforcing rib 15 is fixedly connected to one end of the connecting part 16 connected with the clamping part 13. By arranging the reinforcing rib 15 between the clamping part 13 and the purlin body 11, the structural stability of the clamping part 13 can be improved, preventing the clamping part 13 from breaking due to excessive tensile force, and further improving the anchoring stability and service life of the entire bracket device.

[0070] The present invention also provides an embodiment of a photovoltaic system, as Figures 1 to 7As shown in the figure, it includes a main beam 4, a photovoltaic module 5, and a bracket device for the photovoltaic module in any of the above embodiments; the main beam 4 is arranged on the lower surface of the photovoltaic module 5; the purlin body 11 is sleeved on the main beam 4, and the clamping portion 13 hooks the upper surface of the photovoltaic module 5; the distance between the first open end 111 and the second open end 112 is adjusted by the locking member 3, so that the purlin body 11 locks the main beam 4, and at the same time drives the clamping portion 13 to apply a downward force to the end of the photovoltaic module 5, and at the same time drives the pressing block 2 to move upward along the first inclined portion 12 and apply an upward force to the middle of the photovoltaic module 5, so as to fix the photovoltaic module 5.

[0071] When installing the bracket device, directly sleeve the purlin 1 on the main beam 4, and make the clamping portion 13 of the purlin 1 hook the upper surface of the photovoltaic module 5, and then tighten the locking member 3 to fix the purlin 1, the main beam 4, and the pressing block 2 together. When tightening the locking member 3, the first inclined portion 12 on the first open end 111 and the second open end 112 of the purlin 1 squeezes the second inclined portion 21 on the pressing block 2 upward, so that the pressing block 2 tightly presses the photovoltaic module 5 upward. By tightly pressing the photovoltaic module 5 upward by the pressing block 2 and hooking the photovoltaic module 5 downward by the clamping portion 13 of the purlin 1, the photovoltaic module 5 is fixed, and further the fixed connection between the main beam 4 and the photovoltaic module 5 is realized. Only one bolt needs to be tightened in the whole installation process. Compared with the installation method in the prior art that requires installing multiple bolts to anchor the photovoltaic module 5, the installation complexity is reduced, the installation time is shortened, the installation efficiency is improved, and the installation cost is reduced.

[0072] The cross-section of the main beam 4 is D-shaped. The main beam 4 includes a flat portion and a circular ring portion extending along its length direction. The circular ring portion is attached to the inner side wall of the purlin body 11, and the flat portion abuts against the bottom plate 61 of the pressing strip 6 arranged in the opening of the purlin body 11. The bottom plate 61 abuts against the flat portion of the D-shaped main beam 4, which can prevent the main beam 4 from rotating. The annular part of the purlin body 11 is attached to the circular ring portion, which can tightly hoop the main beam 4.

[0073] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can still be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A support device for a photovoltaic module, characterized in that, it comprises: a purlin, the purlin includes a purlin body for sleeving on a main beam and a clamping portion, the purlin body is an annular structure with an opening, a first inclined portion is respectively provided at a first opening end and a second opening end of the purlin body, and the clamping portion is arranged at one end of the first inclined portion away from the purlin body for hooking the upper surface of the photovoltaic module; a pressing block, the upper end of the pressing block is used for abutting against the lower surface of the photovoltaic module, second inclined portions adapted to the first inclined portions are respectively provided on both side surfaces at the lower end of the pressing block, and the lower end of the pressing block is inserted into the opening of the purlin body; a locking member, arranged on the purlin body, for adjusting the distance between the first opening end and the second opening end, so that the purlin body locks the main beam, and at the same time drives the clamping portion to apply a downward force to the end of the photovoltaic module, and at the same time drives the pressing block to move upward along the first inclined portion and apply an upward force to the middle of the photovoltaic module to realize the fixation of the photovoltaic module; the purlin further includes a vertical portion, a connecting portion and a reinforcing rib, the first opening end and the second opening end are respectively connected to the first inclined portion through the vertical portion, the clamping portion is connected to the first inclined portion through the connecting portion, one end of the reinforcing rib is fixedly connected to the purlin body, and the other end of the reinforcing rib is fixedly connected to one end of the connecting portion; the number of the clamping portions and the connecting portions is two, and they are symmetrically arranged on both sides perpendicular to the extending direction of the main beam.

2. The support device for a photovoltaic module according to claim 1, characterized in that, it further includes a pressure bar, and the pressure bar is arranged in the opening of the purlin body; the pressure bar includes a bottom plate, a first side plate and a second side plate, and the first side plate and the second side plate are respectively arranged on both sides of the bottom plate; the bottom plate is used for abutting against the main beam, and the lower end of the pressing block is inserted between the first side plate and the second side plate.

3. The support device for a photovoltaic module according to claim 2, characterized in that, the locking member is a bolt group, including a bolt and a nut; through holes are respectively provided on the opening end of the purlin body, the pressing block, and the first side plate and the second side plate; the bolt passes through the through holes on the opening end of the purlin body, the pressing block, and the first side plate and the second side plate; the nut is arranged on the bolt.

4. The support device for a photovoltaic module according to claim 1, characterized in that, the clamping portion includes a vertical section and a claw section; one end of the vertical section is connected to the first inclined portion through the connecting portion; the claw section is arranged at the other end of the vertical section for hooking the upper surface of the photovoltaic module.

5. The support device for a photovoltaic module according to claim 4, characterized in that, the number of the claw sections is two; the two claw sections are respectively arranged on both sides of the vertical section along the extending direction of the main beam.

6. The support device for a photovoltaic module according to claim 1, characterized in that, The number of the reinforcing ribs is two, and they are symmetrically arranged on both sides perpendicular to the extending direction of the main beam.

7. A photovoltaic system, characterized in that, a main beam, a photovoltaic module, and a bracket device of the photovoltaic module according to any one of claims 1-6; the main beam is arranged on the lower surface of the photovoltaic module; the purlin body is sleeved on the main beam, and the clamping portion hooks the upper surface of the photovoltaic module; by adjusting the distance between the first open end and the second open end through the locking member, the purlin body is locked to the main beam, and at the same time, the clamping portion applies a downward force to the end of the photovoltaic module, and at the same time, the pressing block is driven to move upward along the first inclined portion and apply an upward force to the middle of the photovoltaic module to fix the photovoltaic module.

8. The photovoltaic system according to claim 7, characterized in that, the cross section of the main beam is D-shaped, the main beam includes a flat portion and a circular ring portion extending along its length direction, the circular ring portion is attached to the inner side wall of the purlin body, and the flat portion abuts against the bottom plate of the pressing strip arranged in the opening of the purlin body.

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