Reinforcing device, mounting bracket and photovoltaic system
By installing a clamping cable between the photovoltaic module and the purlin and fixing it, the protrusions in the fixture increase friction and angle to restrain the deformation of the purlin, the problem of insufficient tightening of the photovoltaic module tracking bracket under wind load is solved, and the mechanical load capacity and stability of the photovoltaic module are improved.
Patent Information
- Application Number
- CN202422386530.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-27
AI Technical Summary
When the existing photovoltaic module tracking brackets resist wind loads, the gap between the purlin and the photovoltaic module is large, and the steel cable is not tightened enough, resulting in uneven load transmission, which can easily lead to component deformation and glass explosion.
The steel cable is clamped with a fixture, and the fixture is fixed between the photovoltaic assembly and the purlin through a fixture. Protrusions are provided in the fixture to increase friction. The steel cable and the purlin are installed at an angle to enhance the tightening effect. The cavity in the fixture is angled to the length direction of the purlin to restrain the deformation of the purlin.
The mechanical load capacity on the front of the mounting bracket is improved, the spacing between the steel cable and the back of the photovoltaic module is reduced, the contact width between the frame of the photovoltaic module and the purlin is increased, uneven stress is avoided, and the stability and safety of the photovoltaic module are improved.
Smart Images
Figure CN223141827U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of photovoltaic power generation, and particularly to a reinforcement device, an installation bracket, and a photovoltaic system. Background Art
[0002] With the increasingly serious global energy crisis and environmental pollution problems, the development of renewable clean energy has become one of the major strategic issues worldwide. Solar energy is an inexhaustible and renewable clean energy source. Photovoltaic power generation has significant advantages such as a simple energy conversion process, no pollution emissions, and no noise. Therefore, the development and utilization of solar energy has become a strategic decision for sustainable development energy in countries around the world. Both developed and developing countries have formulated medium- and long-term development plans, regarding photovoltaic power generation as the hope of future energy for humanity.
[0003] Due to the rotation and revolution of the earth, the relative position between the sun and the earth will change. As the position changes, the angle between the sunlight and the photovoltaic module will also change, which will affect the power generation efficiency of the photovoltaic module. Based on this, a tracking photovoltaic system has been developed in the current photovoltaic field, that is, a system that can adjust the angle of the photovoltaic module according to the position of the sun.
[0004] Currently, the main strategy for the tracking bracket to resist wind loads is to adjust the angle of the tracking bracket, and resist the wind load frontally at a small or large angle. The tracker mainly consists of a bracket column, a main shaft, purlins, a tracking control system, dampers, etc. The photovoltaic module and the purlins are mainly connected by bolts. In the existing solution, steel cables are directly installed by drilling holes in the purlins.
[0005] Currently, the mainstream tracking bracket purlins all support the photovoltaic module by overlapping the purlins with the long side frame of the photovoltaic module. Generally, there are three length specifications: 400-hole installation, 790-hole installation, and 1400-hole installation. Among them, the 400-hole installation can bear the lowest load, and it is easy for the frame to break or the module to be greatly deformed and the glass to burst. If higher load requirements need to be met, longer purlins will be selected, but the increased safety load is limited. The existing solution is to directly pass the steel cable through the holes in the purlins, which will result in a large gap between the steel cable and the back of the module, and the fastening degree of the steel cable is average. Summary of the Utility Model
[0006] To solve one of the above technical problems, the present utility model provides a reinforcement device, an installation bracket, and a photovoltaic system.
[0007] In the first aspect of the embodiment of the present utility model, a reinforcement device is provided, including:
[0008] A clamp for clamping a steel cable. A cavity is formed inside the clamp and penetrates through two opposite sides of the clamp. Protrusions are provided on the inner wall of the cavity;
[0009] A fixing member for fixing the fixture between the photovoltaic module and the purlin, and an included angle exists between the length direction of the cavity and the length direction of the purlin.
[0010] Preferably, the fixture includes an upper clamping plate and a lower clamping plate. A lower cavity is formed on the upper surface of the lower clamping plate, and an upper cavity is formed on the lower surface of the upper clamping plate. When the upper clamping plate is buckled on the lower clamping plate, the upper cavity and the lower cavity form the cavity.
[0011] Preferably, the cavity has at least one bending angle.
[0012] Preferably, the bending angle is arc-shaped.
[0013] Preferably, the protrusion is located at the bottom of the lower cavity and / or the top of the upper cavity.
[0014] Preferably, the protrusion is semi-circular or strip-shaped.
[0015] Preferably, upper mounting holes are formed on the upper clamping plate, and lower mounting holes corresponding to the upper mounting holes are formed on the lower clamping plate. The fixing member fixes and connects the fixture to the purlin through the upper mounting holes and the lower mounting holes.
[0016] Preferably, the fixing member includes a nut, a gasket and a bolt. The bolt sequentially passes through the purlin, the lower mounting hole, the upper mounting hole and the frame of the photovoltaic module, and is screwed with the nut. Gaskets are provided between the nut and the frame of the photovoltaic module and between the head of the bolt and the purlin.
[0017] In a second aspect of the embodiments of the present invention, an installation bracket is provided. The installation bracket includes the reinforcement device described in the first aspect of the embodiments of the present invention. The installation bracket further includes a main shaft and purlins. The plurality of purlins are arranged at intervals on the main shaft, and the length directions of the plurality of purlins are perpendicular to the length direction of the main shaft. The reinforcement device is provided at both ends of each purlin. The steel cable sequentially passes through the cavities of the reinforcement devices located on the same side of the main shaft.
[0018] In a third aspect of the embodiments of the present invention, a photovoltaic system is provided. The photovoltaic system includes a photovoltaic module and the installation bracket described in the second aspect of the embodiments of the present invention. The photovoltaic module is arranged between two adjacent purlins, and the reinforcement device is located at the position where the photovoltaic module and the purlin are installed and fastened.
[0019] The beneficial effects of the utility model are as follows: The reinforcement device proposed in the utility model increases the front mechanical load of the mounting bracket by adding a steel cable and a clamp for clamping the steel cable. The clamp and the protrusions arranged inside the clamp can play a role in increasing the tightening of the steel cable. At the same time, the clamp can also restrain the bending deformation of the purlin contact surface and the bending deformation of the vertical surface toward the main axis when the photovoltaic module is under load. In addition, compared with the existing steel cable reinforcement method, the utility model can make the distance between the steel cable and the back of the photovoltaic module smaller through the clamp, and also increase the contact width between the frame of the photovoltaic module and the purlin in disguise, avoiding the uneven stress generated when the purlin hits the frame of the photovoltaic module at right angles under front load. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0021] Figure 1 This is a schematic diagram of the structure of the reinforcement device described in Example 1 of the utility model;
[0022] Figure 2 This is an exploded view of the reinforcement device described in Example 1 of the utility model;
[0023] Figure 3 This is a schematic diagram of the structure of the mounting bracket described in Example 2 of the utility model;
[0024] Figure 4 This is a schematic diagram of the positions of the purlins and the reinforcement device described in Example 2 of the utility model;
[0025] Figure 5 This is a schematic diagram of the positions of the photovoltaic components, purlins and reinforcement devices described in Example 3 of the utility model.
[0026] Description of reference numerals:
[0027] 1. Clamp, 2. Steel cable, 3. Fixing parts, 4. Purlin, 5. Main shaft, 6. Photovoltaic module, 7. Reinforcement device;
[0028] 1-1, protrusion, 1-2, upper clamping plate, 1-3, lower clamping plate, 1-4, lower cavity, 1-5, upper mounting hole, 1-6, lower mounting hole;
[0029] 3-1, bolt, 3-2, washer, 3-3, nut. DETAILED DESCRIPTION
[0030] To make the technical solutions and advantages in the embodiments of the present application clearer and more understandable, the following further details the exemplary embodiments of the present application with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than an exhaustive list of all embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0031] Embodiment 1
[0032] As Figure 1 shown, this embodiment proposes a reinforcement device, which can be used to improve the mechanical load capacity of the mounting bracket for installing photovoltaic modules. The reinforcement device includes:
[0033] A clamp 1 for clamping the steel cable 2;
[0034] A fixing member 3 for fixing the clamp 1 between the photovoltaic module 6 and the purlin 4.
[0035] Specifically, in this embodiment, the steel cable 2 is threaded through the inside of the clamp 1, and the clamp 1 clamps the steel cable 2. Then, the fixing member 3 fixes the clamp 1 on the purlin 4. A cavity is formed inside the clamp 1, as Figure 2 shown. The cavity penetrates through two opposite sides of the clamp 1, so that the steel cable 2 can penetrate into the clamp 1 from one side and pass through the cavity and then penetrate out from the other side of the clamp 1. Protrusions 1-1 are also provided on the inner wall of the cavity, which can extrude the steel cable 2 when the steel cable 2 is threaded through the cavity, so as to increase the friction force between the steel cable 2 and the inner wall of the cavity and improve the clamping force of the clamp 1 on the steel cable 2. The number and arrangement density of the protrusions 1-1 can be adaptively set according to the actual direction and size of the cavity, and no special limitation is made in this embodiment.
[0036] The fixing member 3 can fix the clamp 1 between the photovoltaic module 6 and the purlin 4, and the fixing method is preferably a detachable installation for convenient later maintenance. Since the steel cable 2 is threaded through the clamp 1, if the threading direction of the steel cable 2 is consistent with the length direction of the purlin 4, it is not conducive to the steel cable 2 reaching another clamp for "threading". Therefore, when fixing the clamp 1 on the purlin 4 in this embodiment, the length direction of the cavity (the threading direction of the steel cable 2) needs to form a certain angle with the length direction of the purlin 4, preferably a vertical angle.
[0037] This embodiment increases the front mechanical load of the mounting bracket by adding a steel cable 2 and a clamp 1 for clamping the steel cable 2. The clamp 1 and the protrusion 1-1 provided inside the clamp 1 can play a role in tightening the steel cable 2. At the same time, the clamp 1 can also restrain the bending deformation of the contact surface of the purlin 4 and the bending deformation of the vertical surface toward the main axis 5 when the photovoltaic module 6 is under load. In addition, compared with the existing method of reinforcing the steel cable 2, this embodiment can make the distance between the steel cable 2 and the back of the photovoltaic module 6 smaller through the clamp 1, and also increase the contact width between the frame of the photovoltaic module 6 and the purlin 4 in disguise, avoiding the uneven stress generated when the purlin 4 hits the frame of the photovoltaic module 6 at right angles under front load.
[0038] In some optional embodiments, the clamp 1 includes an upper clamp plate 1 - 2 and a lower clamp plate 1 - 3 , and the lower clamp plate 1 - 3 is buckled onto the upper clamp plate 1 - 2 to form the clamp 1 .
[0039] Specifically, the upper clamping plate 1-2 and the lower clamping plate 1-3 can be plate-like structures with a certain thickness. A lower cavity 1-4 is provided on the upper surface of the lower clamping plate 1-3, and an upper cavity (not shown in the figure) is provided on the lower surface of the upper clamping plate 1-2. When the upper clamping plate 1-2 is buckled on the lower clamping plate 1-3, the upper cavity 1-4 and the lower cavity 1-4 form a cavity.
[0040] In some optional embodiments, the cavity has at least one bending angle.
[0041] Specifically, in the present embodiment, the cavity can be a straight line, but the friction of the straight line cavity on the steel cable 2 will be reduced. For this reason, the present embodiment sets the cavity to be a broken line, that is, the cavity has at least one bending angle, which can be simply an L-shaped, Z-shaped, or N-shaped bending shape. However, since the steel cable 2 needs to be inserted into multiple reinforcement devices 7 when the reinforcement device 7 is actually installed, it is also necessary to ensure that the steel cable 2 has a certain degree of smoothness inside the reinforcement device 7. In this way, it is necessary that the bending angle of the cavity should not be too many, one or two are enough, and the angle of the bending angle should not be too small, and an obtuse angle is more appropriate. In addition, in order to make the steel cable 2 fit better with the inner wall of the cavity, the bending angle can be designed to be an arc.
[0042] In some optional embodiments, the protrusion 1 - 1 is located at the bottom of the lower cavity 1 - 4 and / or the top of the upper cavity.
[0043] Specifically, in this embodiment, the protrusion 1-1 on the inner wall of the cavity can be arranged in a variety of positions. For example, it can be arranged on the side wall of the cavity, the top of the cavity, or the bottom of the cavity. In order to ensure that the protrusion 1-1 can squeeze the steel cable 2 while the upper clamping plate 1-2 and the lower clamping plate 1-3 clamp the steel cable 2, it is best to arrange the protrusion 1-1 at the top or bottom of the cavity, or to arrange the protrusion 1-1 at both the top and the bottom.
[0044] More specifically, this embodiment provides three position selections for the protrusion 1-1. First, the protrusion 1-1 is located at the bottom of the lower cavity 1-4. Second, the protrusion 1-1 is located at the top of the upper cavity. Third, protrusions 1-1 are provided at both the bottom of the lower cavity 1-4 and the top of the upper cavity. For the first position, in order to clamp the steel cable 2 more firmly between the upper clamping plate 1-2 and the lower clamping plate 1-3, when the upper clamping plate 1-2 is buckled on the lower clamping plate 1-3, the distance between the protrusion 1-1 at the bottom of the lower cavity 1-4 and the top of the upper cavity should be less than the diameter of the steel cable 2. Similarly, for the second position, when the upper clamping plate 1-2 is buckled on the lower clamping plate 1-3, the distance between the protrusion 1-1 at the top of the upper cavity and the bottom of the lower cavity 1-4 should also be less than the diameter of the steel cable 2. For the third position, when the upper clamping plate 1-2 is buckled on the lower clamping plate 1-3, the distance between the protrusion 1-1 at the top of the upper cavity and the protrusion 1-1 at the bottom of the lower cavity 1-4 should be less than the diameter of the steel cable 2.
[0045] In some alternative embodiments, the shape of the protrusion 1-1 can be semi-circular or strip-shaped. The semi-circular protrusion 1-1 can increase the pressure on the steel cable 2, and the strip-shaped protrusion 1-1 can increase the friction area with the steel cable 2. The specific shape can be selected according to the actual situation.
[0046] In some alternative embodiments, the fixing member 3 fixes the fixture 1 between the photovoltaic module 6 and the purlin 4 through the mounting holes provided on the fixture 1.
[0047] Specifically, upper mounting holes 1-5 are provided on the upper clamping plate 1-2, and lower mounting holes 1-6 corresponding to the upper mounting holes 1-5 are provided on the lower clamping plate 1-3. The fixing member 3 fixedly connects the fixture 1 and the purlin 4 through the upper mounting holes 1-5 and the lower mounting holes 1-6. Generally, the number of the upper mounting holes 1-5 and the lower mounting holes 1-6 is an even number, and they are axisymmetric or centrosymmetric to ensure the stability of the installation.
[0048] In some alternative embodiments, the fixing member 3 includes a nut 3-3, a gasket 3-2, and a bolt 3-1, and the fixture 1 and the purlin 4 are fixed by the threaded connection between the bolt 3-1 and the nut 3-3.
[0049] Specifically, for the fixed installation of the fixture 1 and the purlin 4, mounting holes need to be opened on the frame of the photovoltaic module 6 and the purlin 4 as well, and the positions of the mounting holes on the frame of the photovoltaic module 6 and the purlin 4 need to correspond to the upper mounting holes 1-5 of the upper clamping plate 1-2 and the lower mounting holes 1-6 of the lower clamping plate 1-3. Thus, the bolt 3-1 can pass through the purlin 4 through the mounting hole on the purlin 4, then pass through the lower mounting hole 1-6 and the upper mounting hole 1-5, and finally pass out through the mounting hole on the frame of the photovoltaic module 6 and be tightened with the nut 3-3 located at the mounting hole on the frame of the photovoltaic module 6. At the same time, gaskets 3-2 are provided between the nut 3-3 and the frame of the photovoltaic module 6 and between the head of the bolt 3-1 and the purlin 4 to increase the contact area and prevent loosening.
[0050] Embodiment 2
[0051] As Figure 3 shown, this embodiment provides a mounting bracket for mounting the photovoltaic module 6. The mounting bracket includes a main shaft 5, purlins 4, and a reinforcement device 7. Among them, the specific structure of the reinforcement device 7 can refer to the content described in Embodiment 1, and will not be elaborated in this embodiment. The number of purlins 4 is multiple, which can be specifically determined according to the number of photovoltaic modules 6 to be installed. The multiple purlins 4 are arranged at intervals on the main shaft 5, and the length directions of the multiple purlins 4 are perpendicular to the length direction of the main shaft 5. Reinforcement devices 7 are provided at both ends of each purlin 4. The steel cable 2 sequentially passes through the cavities of the reinforcement devices 7 on the same side of the main shaft 5, as Figure 4 shown.
[0052] Embodiment 3
[0053] This embodiment provides a photovoltaic system, which includes a photovoltaic module 6 and a mounting bracket. Among them, the specific structure of the mounting bracket can refer to the content described in Embodiment 2, and will not be elaborated in this embodiment. The photovoltaic module 6 is arranged between two adjacent purlins 4, and the reinforcement device 7 is located at the position for mounting and fastening between the photovoltaic module 6 and the purlin 4, as Figure 5 shown.
[0054] Specifically, in this embodiment, before the reinforcement device 7 is installed on the purlin 4, first place the photovoltaic module 6 and place the fixture 1 between the frame of the photovoltaic module 6 and the purlin 4. Then pre-install the nut 3-3, washer 3-2 and bolt 3-1, keeping them in an untightened state. Lift the photovoltaic module 6 and the upper clamping plate 1-2 by a certain distance to ensure that the steel cable 2 can pass through the cavity inside the fixture 1. After the steel cable 2 is inserted, tighten the bolt 3-1 and the nut 3-3 on one side for pre-tightening, then pass the steel cable 2 through the fixtures 1 on the same side of the remaining purlins 4 in turn, and pre-tighten the steel cable 2 at intervals of one photovoltaic module 6. Finally, tighten all the bolts 3-1 and nuts 3-3. In this embodiment, the bolts 3-1 and nuts 3-3 can be conventional fasteners for the frame of the photovoltaic module 6 and the purlin 4, without adding additional fasteners.
[0055] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these changes and modifications.
Claims
1. A reinforcement device, characterized in that, Comprising: A fixture for clamping a steel cable, with a cavity formed inside the fixture that penetrates two opposite sides of the fixture, and protrusions are provided on the inner wall of the cavity; A fixing member for fixing the fixture between a photovoltaic module and a purlin, and there is an included angle between the length direction of the cavity and the length direction of the purlin.
2. The reinforcement device according to claim 1, characterized in that, The fixture includes an upper clamping plate and a lower clamping plate. A lower cavity is formed on the upper surface of the lower clamping plate, and an upper cavity is formed on the lower surface of the upper clamping plate. When the upper clamping plate is buckled on the lower clamping plate, the upper cavity and the lower cavity form the cavity.
3. The reinforcement device according to claim 1 or 2, characterized in that, The cavity has at least one bending angle.
4. The reinforcement device according to claim 3, characterized in that The bending angle is arc-shaped.
5. The reinforcement device according to claim 2, characterized in that, The protrusions are located at the bottom of the lower cavity and / or the top of the upper cavity.
6. The reinforcement device according to claim 1 or 5, characterized in that, The protrusions are semi-circular or strip-shaped.
7. The reinforcement device according to claim 2, characterized in that, Upper mounting holes are formed on the upper clamping plate, and lower mounting holes corresponding to the upper mounting holes are formed on the lower clamping plate. The fixing member fixes and connects the fixture to the purlin through the upper mounting holes and the lower mounting holes.
8. The reinforcement device according to claim 7, characterized in that, The fixing member includes a nut, a gasket and a bolt. The bolt sequentially passes through the purlin, the lower mounting hole, the upper mounting hole and the frame of the photovoltaic module, and is screwed with the nut. Gaskets are provided between the nut and the frame of the photovoltaic module and between the head of the bolt and the purlin.
9. An installation bracket, characterized in that, The mounting bracket includes the reinforcement device according to any one of claims 1 to 8. The mounting bracket further includes a main shaft and purlins. A plurality of the purlins are arranged at intervals on the main shaft, and the length directions of the plurality of purlins are perpendicular to the length direction of the main shaft. The reinforcement device is provided at both ends of each purlin, and the steel cable sequentially passes through the cavities of the reinforcement devices on the same side of the main shaft.
10. A photovoltaic system, characterized in that, The photovoltaic system includes a photovoltaic module and the mounting bracket according to claim 9. The photovoltaic module is arranged between two adjacent purlins, and the reinforcement device is located at the position where the photovoltaic module and the purlin are installed and fastened.