Self-locking device for photovoltaic panel installation

Abstract

The utility model discloses a self-locking device for photovoltaic panel installation, which relates to the technical field of photovoltaic panel installation and comprises a self-locking body. A connecting piece is arranged at the upper end of the self-locking body; side telescopic holes in which telescopic blocks are arranged in a sliding manner are respectively formed in two sides of the self-locking body; the side wall of the end, away from the self-locking body, of the telescopic block is provided with an inclined face, the end, close to the connecting piece, of the inclined face is farther away from the self-locking body than the end, away from the connecting piece, of the inclined face, and the upper end of the telescopic block is provided with a limiting face. When the telescopic blocks on the two sides are in the minimum retraction state, the distance between the outer edges of the two telescopic blocks is not larger than the distance between the curled edges on the two sides of the U-shaped photovoltaic support. And when the telescopic blocks on the two sides are in a natural extension state, the distance between the limiting surface and the lower plane of the photovoltaic panel is consistent with the thickness of the curled edge of the U-shaped photovoltaic bracket in the same direction. Loosening and slipping are not prone to occurring, and installation is convenient and efficient.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic panel installation technology, and in particular to a self-locking device for photovoltaic panel installation. Background Technology

[0002] Photovoltaics is short for solar photovoltaic power generation system. It is a new type of power generation system that uses the photovoltaic effect of solar cell semiconductor materials to directly convert solar radiation energy into electrical energy. It has two modes: stand-alone operation and grid-connected operation. Photovoltaic panel support can better utilize solar energy for power generation.

[0003] Currently, the most common way to connect photovoltaic panels to U-shaped photovoltaic brackets is through a fixed connection using a lower pressure block or lower pressure plate. However, this fixed connection can lead to the photovoltaic panels falling off later due to reduced bolt preload. Additionally, when using a lower pressure block, workers may step on the photovoltaic panels, causing them to develop hidden cracks and become damaged.

[0004] Therefore, in order to solve this problem, it is necessary to provide a self-locking device for photovoltaic panel installation. Utility Model Content

[0005] The purpose of this invention is to provide a self-locking device for photovoltaic panel installation, which solves the problems existing in the prior art, making it less prone to loosening and slippage, and providing convenient and efficient installation.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a self-locking device for photovoltaic panel installation, including a self-locking body; the upper end of the self-locking body has a connector for fixed connection with the photovoltaic panel; side telescopic holes are respectively provided on both sides of the self-locking body, and telescopic blocks are slidably disposed in the side telescopic holes; in the natural state, the end of the telescopic block away from the self-locking body can be kept extended out of the side telescopic hole; the side wall of the end of the telescopic block away from the self-locking body is provided with an inclined surface, the end of the inclined surface near the connector is further away from the self-locking body than the end of the inclined surface away from the connector, and the upper end of the telescopic block is provided with a limiting surface; when the telescopic blocks on both sides are in the minimum retracted state, the distance between the outer edges of the two telescopic blocks is not greater than the distance between the two rolled edges of the U-shaped photovoltaic bracket; and when the telescopic blocks on both sides are in the naturally extended state, the distance between the limiting surface and the lower plane of the photovoltaic panel is consistent with the thickness of the rolled edge of the U-shaped photovoltaic bracket in the same direction.

[0008] Preferably, the self-locking body includes a square tube with side telescopic holes on both sides; one end of the telescopic block is fixedly provided with an extension portion, and the upper end of the telescopic block is fixedly provided with a limiting portion; the extension portion slides and extends within the side telescopic holes, the limiting portion is located within the square tube, and the limiting portion can limit the extension portion from extending beyond the extreme position of the side telescopic holes; a push spring is also provided between one end of the telescopic block located within the square tube and the inner wall of the corresponding side of the square tube.

[0009] Preferably, the telescopic block has a positioning hole, and one end of the push spring abuts against the positioning hole.

[0010] Preferably, the connector includes a bolt, a nut, two flat washers, and a spring washer; a through hole is provided on the upper wall of the square tube, and the threaded end of the bolt passes through the through hole from inside the square tube and is inserted into the mounting hole of the photovoltaic panel; the nut is used to thread the bolt to the threaded end; each of the flat washers and the spring washer is used to be inserted onto the threaded end of the bolt.

[0011] Preferably, a through hole is provided on the inner sidewall of the square tube opposite to the perforation, the through hole allowing the bolt head to pass through.

[0012] Preferably, the bolt is a stainless steel internal hex bolt.

[0013] Preferably, the push spring is made of stainless steel.

[0014] Preferably, the lower end of the side expansion hole is flush with the inner bottom surface of the square tube.

[0015] Preferably, the limiting surface and the inclined surface are connected by a transition surface.

[0016] Preferably, the outer diameter of the push spring is the same as the inner diameter of the positioning hole.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] The self-locking device for photovoltaic panel installation provided by this utility model fixes the photovoltaic panel to the installation bracket through the connector. The telescopic blocks on both sides can be directly fastened into the groove of the U-shaped photovoltaic bracket. The two telescopic blocks automatically pop out to realize the installation of the photovoltaic panel and the bracket. This installation method is not only quick and efficient, but also reduces the occurrence of loosening and slippage in the later stage, and reduces the damage caused by the installation workers to the bracket when tightening the bolts. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of the self-locking device for photovoltaic panel installation provided by this utility model;

[0021] Figure 2 A schematic diagram of the structure of the self-locking body in the self-locking device for photovoltaic panel installation provided by this utility model;

[0022] Figure 3 A schematic diagram of the telescopic block in the self-locking device for photovoltaic panel installation provided by this utility model;

[0023] Figure 4 A schematic diagram illustrating the cooperative use of the self-locking device for photovoltaic panel installation provided by this utility model and the U-shaped photovoltaic bracket;

[0024] Figure 5 A schematic diagram showing the connection between the self-locking device for photovoltaic panel installation provided by this utility model and the U-shaped photovoltaic bracket and photovoltaic panel.

[0025] In the picture:

[0026] 10-Square tube; 11-Side telescopic hole; 12-Through hole; 13-Through hole; 14-Push spring;

[0027] 20-Telescopic block; 21-Telescopic part; 211-Limiting surface; 212-Transition surface; 213-Inclined surface; 22-Limiting part; 23-Positioning hole;

[0028] 30-U-shaped photovoltaic bracket; 31-Curled edge;

[0029] 40 - Hex socket head cap screw; 41 - Nut. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] The purpose of this invention is to provide a self-locking device for photovoltaic panel installation, which solves the problems existing in the prior art, making it less prone to loosening and slippage, and providing convenient and efficient installation.

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1

[0034] This embodiment provides a self-locking device for photovoltaic panel installation, such as... Figures 1-5 As shown, the device includes a self-locking body; the upper end of the self-locking body has a connector for fixed connection with a photovoltaic panel (or photovoltaic module); side telescopic holes 11 are respectively provided on both sides of the self-locking body, and telescopic blocks 20 are slidably arranged in the side telescopic holes 11; in the natural state, the end of the telescopic block 20 away from the self-locking body can be kept extended out of the side telescopic hole 11; the side wall of the end of the telescopic block 20 away from the self-locking body is provided with an inclined surface 213, the end of the inclined surface 213 near the connector is further away from the self-locking body than the end of the inclined surface 213 away from the connector, and the upper end of the telescopic block 20 is provided with a limiting surface 211; when the telescopic blocks 20 on both sides are in the minimum retracted state, the distance between the outer edges of the two telescopic blocks 20 is not greater than the distance between the two rolled edges 31 of the U-shaped photovoltaic bracket 30; and when the telescopic blocks 20 on both sides are in the naturally extended state, the distance between the limiting surface 211 and the lower plane of the photovoltaic panel is consistent with the thickness of the rolled edge 31 of the U-shaped photovoltaic bracket 30 in the same direction.

[0035] The photovoltaic panel is fixed to the installation bracket by means of connectors. The telescopic blocks 20 on both sides are directly snapped into the groove of the U-shaped photovoltaic bracket 30. The two telescopic blocks 20 pop out automatically, realizing the installation of the photovoltaic panel and the bracket. This installation method is not only quick and efficient, but also reduces the occurrence of loosening and slippage in the later stage, and reduces the damage caused by the installation workers to the bracket when tightening the bolts.

[0036] The following are the settings instructions for the self-locking body:

[0037] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 and Figure 2As shown, the self-locking body includes a square tube 10, with side telescopic holes 11 on both sides of the square tube 10; one end of the telescopic block 20 is fixedly provided with an extension (the side wall of the extension has an inclined surface 213 and a transition surface 212), and the upper end of the telescopic block 20 is fixedly provided with a limiting part 22. The extension slides and extends within the side telescopic hole 11, and the limiting part 22 is located within the square tube 10, and the limiting part 22 can limit the extreme position of the extension extending out of the side telescopic hole 11; a push spring 14 is also provided between one end of the telescopic block 20 located within the square tube 10 and the inner wall of the corresponding side of the square tube 10. The square tube 10 has good structural stability and strength, providing reliable support for the entire self-locking device. When bearing the weight of the photovoltaic panel and external loads such as wind and vibration, the square tube 10 can effectively disperse stress, reduce the risk of deformation, and ensure that the photovoltaic panel is firmly installed and operates stably for a long time. The protruding part is fixed to one end of the telescopic block 20 and slides and extends within the side telescopic hole 11. This structure provides precise guidance for the telescopic block 20's telescopic movement, ensuring that the telescopic block 20 moves stably along the direction of the side telescopic hole 11, avoiding swaying or deviation, thereby ensuring accurate matching with the U-shaped photovoltaic bracket 30. When the telescopic block 20 extends to its limit position, the limiting part 22 contacts the inner wall of the square tube 10 to prevent the telescopic block 20 from over-extending, ensuring that the end of the telescopic block 20 away from the self-locking body can maintain a suitable extension state in its natural state, achieving good matching with the U-shaped photovoltaic bracket 30.

[0038] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 and Figure 2 As shown, a through hole 13 is provided on the inner wall of the square tube 10 opposite to the through hole 12, and the through hole 13 allows the bolt head of the bolt to pass through.

[0039] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 and Figure 2 As shown, the lower end of the side telescopic hole 11 is flush with the inner bottom surface of the square tube 10. This flush design provides the telescopic block 20 with a larger and continuous sliding space, avoiding movement obstruction caused by the height difference between the lower end of the side telescopic hole 11 and the inner bottom surface of the square tube 10. During the frequent extension and retraction of the telescopic block 20, it reduces jamming and ensures that it can extend or retract smoothly, guaranteeing the accuracy of the fit with the U-shaped photovoltaic bracket and improving the smoothness of the installation process.

[0040] The following are the settings instructions for the telescopic block 20:

[0041] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 and Figure 3As shown, the telescopic block 20 has a positioning hole 23, and one end of the push spring 14 abuts against the positioning hole 23. The positioning hole 23 provides precise positioning for the push spring 14, ensuring that one end of the spring can accurately abut against the positioning hole 23; this ensures that the spring is always in the designed working position, so that the spring can stably provide thrust during the telescopic block 20's extension and retraction, thereby improving the stability and repeatability of the telescopic block 20's movement, and ensuring that the self-locking device maintains a consistent state each time it engages with the U-shaped photovoltaic bracket 30, thus improving the reliability of the installation.

[0042] In the optional solutions of this embodiment, it is more preferred that the outer diameter of the push spring 14 is the same as the inner diameter of the positioning hole 23.

[0043] In the optional solutions of this embodiment, it is more preferred that the push spring 14 is made of stainless steel. Since stainless steel springs are not prone to rust, the frequency of spring damage and replacement due to corrosion can be reduced, ensuring normal operation even in harsh environments with high humidity and high salinity, thus extending the service life of the self-locking device.

[0044] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 and Figure 3 As shown, the limiting surface 211 and the inclined surface 213 are connected by a transition surface 212. The inclined surface 213 first contacts the rolled edge 31 of the U-shaped photovoltaic bracket 30, and then gradually transitions to the limiting surface 211 through the transition surface 212, so that the telescopic block 20 can enter the gap of the rolled edge 31 of the U-shaped photovoltaic bracket 30 more smoothly.

[0045] The following are the settings instructions for the connectors:

[0046] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 As shown, the connector includes a bolt, a nut 41, two flat washers and a spring washer; a through hole 12 is provided on the upper wall of the square tube 10, and the threaded end of the bolt passes through the through hole 12 from the inside of the square tube 10 and is installed in the mounting hole of the photovoltaic panel; the nut 41 is used for threaded connection to the threaded end of the bolt; each flat washer and spring washer is used to be installed on the threaded end of the bolt.

[0047] Specifically, the connectors are composed of existing structures, and their usage is consistent with existing methods, so they will not be elaborated further here.

[0048] In the optional solutions of this embodiment, the preferred option is a stainless steel hexagon socket head cap screw 40.

[0049] Regarding other related settings:

[0050] Specifically, the width of the self-locking body must be matched with the net width between the two rolled edges 31 of the U-shaped photovoltaic bracket 30. If it is too wide, it will not be able to be fastened, and if it is too narrow, it will be too loose. The distance between the upper plane of the telescopic part 21 of the telescopic block 20 and the upper surface of the square tube 10 is consistent with the height of the rolled edge 31 of the U-shaped photovoltaic bracket 30. If they are not consistent, the telescopic part 21 will not be able to protrude normally from the side telescopic hole 11, or it will cause it to loosen up and down.

[0051] Specifically, the overall height of the corresponding part of the limiting part 22 and the telescopic block 20 is consistent with the net height inside the square tube 10. Otherwise, after installation, the telescopic block 20 will be pried under the action of tension, affecting the tightness of the installation.

[0052] Specifically, the outer diameter of the push spring 14 should be consistent with the diameter of the positioning hole 23 on the telescopic block 20. If it is too large, it will not fit in; if it is too small, the push spring 14 will loosen and easily fall off. In its natural state, one end of the push spring 14 should protrude from the positioning hole 23 by a corresponding length to ensure that the telescopic block 20 has sufficient elasticity when it retracts into the square tube 10.

[0053] Specifically, the diameter of the through hole 13 of the square tube 10 should be large enough to allow the head of the internal hex bolt 40 to pass through; the side expansion hole 11 of the square tube 10 should be the same size as the cross-section of the expansion part 21 of the expansion block 20 to ensure that the expansion block 20 does not wobble from side to side.

[0054] Specifically, the assembly instructions for the self-locking device for photovoltaic panel installation in this embodiment are as follows: Two identical push springs 14 are partially inserted into the fixing holes 23 of the two telescopic blocks 20, with the remaining portion exposed. Then, the two push springs 14 and the two telescopic blocks 20 are respectively fitted inside the square tube 10, and the telescopic portions 21 of the two telescopic blocks 20 protrude through the side telescopic holes 11 on both sides of the square tube 10. At the same time, the inclined surface 213, transition surface 212, and limiting surface 211 of the telescopic portion 21 also protrude. The limiting portion 22 fixes the outward protrusion length of the telescopic portion 21. Finally, the hexagon socket bolt 40 is inserted into the square tube 10 through the lower through hole 13. The screw portion of the hexagon socket bolt 40 passes through the through hole 12 of the square tube 10. Finally, the flat washer, spring washer, and nut 41 are installed. Thus, a set of self-locking devices is assembled.

[0055] Working principle and usage process: First, during bracket installation, the spacing between the two U-shaped photovoltaic brackets 30 fixing each photovoltaic panel is measured and controlled to ensure that this spacing matches the spacing of the pre-drilled bolt holes on the lower frame of the photovoltaic panel. Next, the nuts 41 and upper washers of the hexagonal socket head cap screws 40 of the entire self-locking device are removed. The self-locking device is then fixed to the pre-drilled bolt holes on the lower frame of the photovoltaic panel using the hexagonal socket head cap screws 40, while ensuring that the self-locking device is perpendicular to the photovoltaic panel frame. This completes the installation of the four self-locking devices (i.e., the self-locking devices used for photovoltaic panel installation in this embodiment). The four self-locking devices are installed sequentially at the bolt holes on both sides of a photovoltaic panel. After the four self-locking devices are installed with the photovoltaic panel frame, the photovoltaic panel frame at the location of the self-locking devices is pressed down to fix them. The four self-locking devices are simultaneously snapped into the grooves of the U-shaped photovoltaic bracket 30. The two telescopic blocks 20 of each self-locking device automatically pop out their protruding telescopic parts 21 and fasten them to the lower part of the rolled edge 31 of the U-shaped photovoltaic bracket 30. At this time, the photovoltaic panel is fixed to the U-shaped bracket. Finally, limit devices are installed at both ends of the U-shaped photovoltaic bracket 30 to prevent the photovoltaic panel from sliding on the U-shaped photovoltaic bracket 30.

[0056] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A self-locking device for photovoltaic panel installation, characterized by: The self-locking body comprises a square tube, two side telescopic holes are arranged on two sides of the square tube, and a telescopic block is arranged in the side telescopic hole. An upper end of the self-locking body is provided with a connecting piece for fixed connection with a photovoltaic panel. Two sides of the self-locking body are respectively provided with side telescopic holes, and a telescopic block is slidably arranged in the side telescopic hole; in a natural state, one end of the telescopic block away from the self-locking body can keep a state of extending out of the side telescopic hole; a side wall of the one end of the telescopic block away from the self-locking body is provided with an inclined surface, one end of the inclined surface close to the connecting piece is farther away from the self-locking body than the other end of the inclined surface away from the connecting piece, and an upper end of the telescopic block is provided with a limiting surface. When the telescopic blocks on two sides are in a minimum retracted state, the spacing between the outer edges of the two telescopic blocks is not greater than the spacing between the two sides of the U-shaped photovoltaic support; and when the telescopic blocks on two sides are in a natural extended state, the spacing between the limiting surface and the lower plane of the photovoltaic panel is consistent with the thickness of the flange of the U-shaped photovoltaic support in the same direction.

2. A self-locking device for photovoltaic panel mounting according to claim 1, characterized in that: The self-locking body comprises a square tube, two side telescopic holes are arranged on two sides of the square tube, and a telescopic block is arranged in the side telescopic hole. One end of the telescopic block is fixedly provided with an extension part, and an upper end of the telescopic block is fixedly provided with a limiting part; the extension part is slidably telescoped in the side telescopic hole, the limiting part is located in the square tube, and the limiting part can limit the limit position of the extension part extending out of the side telescopic hole. A pushing spring is further arranged between one end of the telescopic block in the square tube and the inner wall of the corresponding side of the square tube.

3. A self-locking device for photovoltaic panel mounting according to claim 2, characterized in that: A positioning hole is formed in the telescopic block, and one end of the pushing spring abuts in the positioning hole.

4. The self-locking device for photovoltaic panel installation according to claim 2, characterized in that: The connecting piece comprises a bolt, a nut, two flat pads and a spring pad. A through hole is formed in the upper wall of the square tube, the threaded end of the bolt passes out of the square tube through the through hole and is arranged in the mounting hole of the photovoltaic panel. The nut is used for threaded connection on the threaded end of the bolt. Each flat pad and the spring pad are arranged on the threaded end of the bolt.

5. A self-locking device for photovoltaic panel mounting according to claim 4, characterized in that: A through hole is formed in the inner side wall of the square tube opposite to the through hole, and the through hole can pass the bolt head of the bolt.

6. A self-locking device for photovoltaic panel mounting according to claim 4, characterized in that: The bolt is a stainless steel hexagonal bolt.

7. A self-locking device for photovoltaic panel installation according to claim 2, characterized in that: The pushing spring is made of stainless steel.

8. A self-locking device for photovoltaic panel installation according to claim 4, characterized in that: The lower end of the side telescopic hole is flush with the inner bottom surface of the square tube.

9. The self-locking device for photovoltaic panel installation according to claim 1, characterized in that: The limiting surface and the inclined surface are connected through a transition surface.

10. A self-locking device for photovoltaic panel mounting according to claim 3, characterized in that: The outer diameter of the pushing spring is consistent with the inner diameter of the positioning hole.

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