A bracket for balcony photovoltaic systems

Abstract

This utility model discloses a bracket for balcony photovoltaic systems, including a bracket frame and an inclined beam connected to the front end of the bracket frame. The upper end of the inclined beam is connected to the bracket frame via a connector, and the lower end of the inclined beam is connected to a cross brace via a hinge. The middle part of the cross brace is connected to the bracket frame via a connector, and the distal end of the cross brace extends to the rear side of the bracket frame. A connecting component for installing photovoltaic modules is also provided on the front of the inclined beam. The key advantages of this utility model are: significantly improved safety and reliability; convenient and reliable stepless angle adjustment; effective suppression of rod rotation; improved safety during installation and anti-tipping properties; expanded applicability; and improved installation convenience and efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic technology, and in particular relates to a bracket for balcony photovoltaic systems. Background Technology

[0002] Balcony photovoltaics (PV) has developed rapidly in recent years as an emerging sub-segment of distributed photovoltaic power generation. While the overseas balcony PV market is booming, the Chinese market has also shown enormous potential. Especially given the slowdown in the growth of residential PV due to policy impacts, balcony PV is expected to become a new growth point for distributed PV business. With the continuous growth of balcony PV installed capacity, the safety of its support structures is becoming increasingly important. Currently, the main application scenarios for balcony PV are concentrated on steel and glass railings of residential balconies. These residential balcony railings typically include columns, beams, intermediate decorative components (such as metal grilles, glass panels, etc.), and balcony skirting boards. Existing solutions for steel railing support structures typically employ the following structure: the upper part of the support is fixed to the railing beam by straps or clamps; the lower part of the support is fixed to the metal grille by clamps or plates.

[0003] However, this type of solution has the following significant problems and shortcomings: 1. The support structure relies entirely on the railing for fixation, and all external forces on the components are transferred to the railing structure. The support structure lacks a direct and reliable connection with the main building structure (such as walls and floors). Especially in high-rise buildings or areas with high wind pressure, the horizontal force acting on the top of the railing may far exceed the national standard design requirement of 1kN, posing a risk of structural failure.

[0004] 2. Metal grilles are secondary components of steel railings, characterized by small profiles, thin walls, and low weld heights at connection points. Their load-bearing capacity and joint strength are typically insufficient to meet the long-term fixed installation requirements of balcony photovoltaic modules. Within the expected design lifespan of the balcony photovoltaic system, the risk of metal grille failure increases significantly under the long-term effects of wind loads, snow loads, self-weight, and corrosion, posing a safety hazard.

[0005] 3. When the lower middle decorative piece is a glass panel (usually open at the top and bottom), the existing solution that relies on metal grilles for fixing is not applicable.

[0006] In addition, existing balcony photovoltaic bracket products have a simple structure and cannot be adjusted according to the differences in the optimal sunlight angle of different floors of high-rise buildings, making it difficult to meet the personalized needs of customers. Utility Model Content

[0007] In view of the deficiencies of the existing technology, the purpose of this utility model is to propose a bracket for balcony photovoltaic systems.

[0008] The objective of this utility model will be achieved through the following technical solution:

[0009] A bracket for photovoltaic panels on a balcony includes a bracket frame and an inclined beam connected to the front end of the bracket frame. The upper end of the inclined beam is connected to the bracket frame via a connector, the lower end of the inclined beam is connected to the near end of a cross brace via a hinge, the middle part of the cross brace is connected to the bracket frame via a connector, and the far end of the cross brace extends to the rear side of the bracket frame. A connecting component for installing photovoltaic modules is also provided on the front of the inclined beam.

[0010] Preferably, the connecting assembly is placed at the upper and lower ends of the inclined beam, and includes mounting bolts and side pressure blocks. The side pressure blocks are stepped, and the openings of the upper and lower side pressure blocks are arranged opposite to each other. The lower end of the side pressure block is connected to the inclined beam by bolts.

[0011] Preferably, the top of the inclined beam is also provided with a clamp for connecting to the balcony beam.

[0012] Preferably, the support frame, diagonal beam, and cross brace are grooved aluminum profiles.

[0013] Preferably, the support frame is formed by a set of vertical supports placed on the ground and a set of support rods connected to the vertical supports by L-shaped corner fittings.

[0014] Preferably, the horizontal brace is placed vertically outside the vertical brace, and its middle part is connected to the vertical brace and the support rod at the lower end of the vertical brace respectively through L-shaped corner fittings. The rear end of the horizontal brace is also provided with an L-shaped corner fitting for connection. The horizontal brace, the vertical brace and the support rod at the lower end of the vertical brace are arranged perpendicular to each other in space.

[0015] Preferably, the clamp is in the shape of an inverted J, and the clamp has a connecting hole for adjusting the tightening.

[0016] The beneficial effects of this utility model are reflected in:

[0017] 1. Significantly improves safety and reliability: By transferring the main support and fixing points to the sturdy cross braces, which are reliably connected to the main building structure through the ends of the cross braces, the problem of insufficient load-bearing capacity and failure risk caused by the low strength of the metal grille (as a secondary component) (small profile, thin wall thickness), weak nodes (small weld height), and long-term exposure to loads (wind, snow, self-weight) and corrosion is completely solved, eliminating the major safety hazards caused by this.

[0018] 2. Achieve convenient and reliable stepless angle adjustment: A movable hinge connects the lower end of the inclined beam to the cross brace, allowing the hinge to slide continuously and lock on the grooved aluminum profile of the cross brace, thus achieving stepless adjustment of the photovoltaic module's tilt angle. Users or installers can conveniently and precisely adjust the modules to the optimal tilt angle according to the specific lighting conditions (optimal angle differences) of different floors in a high-rise building, as well as the customer's personalized aesthetic or functional requirements, maximizing the power generation efficiency of the photovoltaic system while meeting diverse needs.

[0019] 3. Effectively suppresses member rotation, improving installation safety and overturning resistance: The ends of the horizontal braces are tightly and extensively fitted to the solid surface of the balcony's concrete skirting board via corner brackets. Simultaneously, the vertical braces provide effective vertical support. This close contact generates significant frictional torque at the contact surface during the pre-tightening stage (before final anchor bolt tightening) and when subjected to moments that could cause the support to overturn due to wind loads. This frictional torque effectively constrains the initial rotation of the support system around its lower connection point (the area connecting to the skirting board / wall). This significantly reduces the risk of the support system accidentally loosening, slipping, or undergoing unexpected rotation due to stress during installation adjustments or in the initial stages of extreme conditions such as sudden strong winds, providing a solid initial stability foundation for safe and controllable subsequent anchoring operations. After final anchoring, combined with the overall frame structure, it further enhances the strong anti-overturning capability.

[0020] 4. Expanded applicability: Because the lower fixing point is completely independent of the middle decorative component of the railing (whether it is a metal grille or a glass panel), the bracket of this utility model can be seamlessly applied to balconies with glass panels at the bottom (usually open at the top and bottom). This solves the core pain point of existing solutions being unable to be installed in glass railing scenarios, greatly expanding the application scenarios and market potential of the product.

[0021] 5. Improved installation convenience and efficiency: The system adopts standardized grooved aluminum profiles, universal corner fittings, and bolt connections, featuring modular design. The installation process of "pre-installing the main body first, then reinforcing and stabilizing" (i.e., pre-installing and pre-tightening all components except the support rods, and then installing the support rods after the main body's position is determined and anchored to the building) makes on-site installation steps clear and easy to operate, significantly improving installation efficiency and reducing installation complexity and labor costs. The clamp structure also allows it to flexibly adapt to railing beams of different sizes and shapes, simplifying the connection operation with the railing.

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a schematic diagram of the structure of this utility model after connecting the photovoltaic module.

[0025] Figure 3 This is a structural diagram of the present invention after it has been used on a balcony.

[0026] Figure 4 This is a schematic diagram of the connection structure between the horizontal brace, the vertical brace, and the lower end support rod of the vertical brace of this utility model.

[0027] Figure 5 This is a schematic diagram of the structure of the clamp of this utility model.

[0028] Figure 6 Another perspective structural diagram of the clamp of this utility model.

[0029] Figure 7 A schematic diagram of the connection structure between the inclined beam and the vertical brace at one of the clamps in this utility model.

[0030] Figure 8 This utility model presents a schematic diagram of the reinforced connection between the inclined beam and the vertical brace at the clamp.

[0031] Figure 9 An enlarged structural diagram of the connecting component on one of the inclined beams of this utility model. Detailed Implementation

[0032] This utility model discloses a bracket for balcony photovoltaic systems, combined with... Figures 1-9 As shown, a bracket for a balcony photovoltaic system is included, which allows the photovoltaic module 6 to be well integrated with the balcony 5. The bracket mainly includes a bracket frame, diagonal beams 3, and horizontal braces 4. In this embodiment, the bracket frame, diagonal beams 3, and horizontal braces 4 are grooved aluminum profiles. The bracket frame is formed by connecting a set of support rods 1 and a set of vertical supports 2 through L-shaped corner fittings 12 and bolts. Furthermore, the vertical supports 2 serve as the legs of the bracket frame, standing upright on the ground, and the two support rods 1 are respectively mounted and connected to the upper and lower ends of the support rods 1. To strengthen the connection, the L-shaped corner fittings have reinforcing ribs.

[0033] The inclined beam 3 is connected to the front end of the support frame (the front of this utility model refers to the side where the photovoltaic module is installed), and an angle is formed between it and the support frame. The angle between the inclined beam 3 and the support frame can be adjusted as needed to ensure that the photovoltaic module placed on the inclined beam 3 receives optimal lighting conditions. Specifically, the upper end of the inclined beam 3 is connected to the vertical support 2 via an L-shaped corner bracket 12, and the lower end of the inclined beam 3 is connected to the horizontal support 4 via a movable hinge 41. The angle between the inclined beam and the horizontal plane can be changed by adjusting the hinge at different positions on the horizontal support. The horizontal support 4 and the vertical support 2 are perpendicular to each other, with its middle part connected to the outer side of the vertical support 2 via an L-shaped corner bracket 12, and the rear end of the horizontal support 4 extending to the rear side of the support frame. Furthermore, the horizontal support 4 and the support rod erected at the lower end of the vertical support 2 are also connected via L-shaped corner brackets and bolts. That is to say, the horizontal support, the support rod at the lower end of the vertical support, and the vertical support form a mutually supporting X, Y, and Z axis, and are spatially perpendicular to each other to better suppress and avoid rod torsion.

[0034] The rear end of the cross brace 4 is also equipped with an L-shaped corner bracket, which can be connected and secured to the balcony via the L-shaped corner bracket and bolts, achieving a reliable connection between the support and the main building structure, further enhancing structural strength. This connection method ensures that the support does not rely solely on the railing for load-bearing, significantly reducing the horizontal load (especially wind load) borne by the railing (especially the crossbeams). This ensures that even in high-rise buildings or areas with high wind pressure, the horizontal force applied to the top of the railing can be effectively distributed to the main building structure, fundamentally avoiding the risk of railing structure failure due to bearing horizontal forces far exceeding national standard design requirements (such as 1kN).

[0035] The top of the inclined beam 3 is provided with a clamp 31 for connecting to the balcony beam 7. The clamp 31 is inverted J-shaped and has connecting holes 311 for adjusting the tightness. The clamp 31 clamps the balcony beam to connect to the beam and is tightened by bolts through the connecting holes 311. After stabilization, the clamp will be Q-shaped. The number of connecting holes 311 is set as needed to accommodate different balcony beams and adjustments at different positions. To strengthen the connection with the inclined beam 3, side wings 312 are vertically provided on both sides of the straight section of the clamp 31. Connecting threaded holes 313 are provided on the side wings 312 and the straight section between the side wings. This utility model adopts multiple fastening connections between the inclined beam and the clamp: the upper end of the inclined beam is placed between the side wings 312 of the clamp 31 and attached to the straight section of the clamp, and is fastened to the clamp 31 by at least two sets of bolts passing through the connecting threaded holes 313. Furthermore, a through hole is provided on the side of the inclined beam, the position of which corresponds to the position of the connecting threaded hole on the side wing of the clamp. The vertical brace, clamp, and inclined beam are reinforced and connected by L-shaped corner fittings and bolts. Of course, in order to further enhance the structural strength, the inclined beam 3 and the vertical brace 2 can be reinforced and fastened with additional corner fittings and bolts. The fastening at multiple positions forms a stable node.

[0036] The inclined beam 3 also has a connecting component for installing photovoltaic modules on its front side. The connecting component is located at the upper and lower ends of the inclined beam and includes mounting bolts 33 and edge clamping blocks 32. The edge clamping blocks 32 are stepped, with the openings of the upper and lower edge clamping blocks 32 facing each other. The lower end of the edge clamping blocks 32 is connected to the inclined beam 3 by bolts. When installing the photovoltaic module, the photovoltaic module is placed on the inclined beam 3 and fixed to the inclined beam using mounting bolts 33 through the mounting holes on the back of the photovoltaic module. Simultaneously, the four edge clamping blocks 32 on the two inclined beams press the four end edges of the photovoltaic module firmly against the inclined beams, achieving secondary fixation. This double locking effectively prevents the photovoltaic module from slipping under its own weight and external forces.

[0037] This utility model bracket is easy to assemble and disassemble, highly adaptable, flexible, and easier to maintain. Furthermore, it can slide along the groove of the cross brace 4 according to the specific dimensions of the balcony and the required optimal tilt angle of the photovoltaic modules, continuously and steplessly changing the tilt angle of the inclined beam (and the photovoltaic modules fixed on the inclined beam) relative to the horizontal plane. After determining the ideal angle, the movable hinge can be locked on the cross brace.

[0038] This utility model is modular. Before installation, all components (except the struts) are pre-assembled and pre-tightened as a whole support. During the pre-assembly and pre-tightening stage, the focus is first on ensuring that the clamps 31 firmly hold the railing beam at the installation location. Simultaneously, the ends of the horizontal supports 4 are fitted to the balcony (or wall) using corner brackets, and then secured to the balcony skirting board with bolts and anchors to ensure reliable anchoring of the main support structure to the building structure. Then, the struts are connected between the vertical supports, and the remaining parts are fully tightened using L-shaped corner brackets and bolts. The support frame of this utility model is a stable quadrilateral support structure, which can significantly improve the wind pressure resistance, deformation resistance, and overall rigidity of the entire support system.

[0039] It should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" used in this document to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] Furthermore, the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it; although this utility model 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 of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bracket for balcony photovoltaics, characterized by: The device includes a support frame and an inclined beam connected to the front end of the support frame. The upper end of the inclined beam is connected to the support frame via a connector, and the lower end of the inclined beam is connected to the near end of a cross brace via a hinge. The middle part of the cross brace is connected to the support frame via a connector, and the far end of the cross brace extends to the rear side of the support frame. A connecting component for installing photovoltaic modules is also provided on the front of the inclined beam.

2. The support bracket for photovoltaic on balcony as claimed in claim 1, wherein: The connecting assembly is placed at the upper and lower ends of the inclined beam and includes mounting bolts and side pressure blocks. The side pressure blocks are stepped, and the openings of the upper and lower side pressure blocks are arranged opposite to each other. The lower end of the side pressure block is connected to the inclined beam by bolts.

3. A support for photovoltaic use on a balcony according to claim 2, characterized in that: The top of the inclined beam is also equipped with a clamp for connecting to the balcony beam.

4. A support for photovoltaic use on a balcony according to claim 3, characterized in that: The support frame, diagonal beam, and cross brace are made of grooved aluminum profiles.

5. A bracket for balcony photovoltaic systems as described in claim 4, characterized in that: The support frame is formed by a set of vertical supports placed on the ground and a set of support rods connected to the upper and lower ends of the vertical supports by L-shaped corner brackets.

6. A bracket for balcony photovoltaic systems as described in claim 5, characterized in that: The horizontal brace is placed vertically outside the vertical brace, and its middle part is connected to the vertical brace and the support rod at the lower end of the vertical brace by L-shaped corner fittings. The rear end of the horizontal brace is also provided with an L-shaped corner fitting for connection. The horizontal brace, the vertical brace and the support rod at the lower end of the vertical brace are arranged perpendicular to each other in space.

7. A bracket for balcony photovoltaic systems as described in claim 6, characterized in that: The clamp is in the shape of an inverted J, and a connecting hole for adjusting the tightening is provided on the clamp.

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