Photovoltaic combiner box fastening device

Abstract

The embodiment of the utility model relates to the technical field of combiner boxes, and discloses a photovoltaic combiner box fastening device, and the rear side of a combiner box body is provided with a reinforcing and positioning assembly. A rotating disc is rotated to drive a worm between two fixing blocks to rotate, so that the worm drives a worm gear to rotate, the worm gear pushes one end of a connecting rod to move, the other end of the connecting rod pushes a limiting column to move in a guide block, and one end of the limiting column penetrates through a limiting hole to be inserted into a mounting groove and abuts against the inner side of the mounting groove; meanwhile, one end of each limiting column penetrates through the interior of the corresponding limiting hole, the position of the combiner box body can be positioned, and the situation that the combiner box body moves due to stress on the two mounting frames, consequently, connecting bolts are loosened, and the mounting stability of the combiner box body is affected is prevented; and a self-locking effect is achieved between the worm gear and the worm, so that the worm gear cannot rotate, and the fixing stability of the limiting column is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of busbar boxes, and specifically to a fastening device for a photovoltaic busbar box. Background Technique

[0002] The busbar box is a wiring device in a photovoltaic power generation system that ensures the orderly connection and busbar function of photovoltaic modules. This device can ensure that the photovoltaic system is easy to cut off the circuit during maintenance and inspection, and reduce the power outage range when the photovoltaic system fails. A busbar box means that users can connect a certain number of photovoltaic cells with the same specifications in series to form photovoltaic strings, and then connect several photovoltaic strings in parallel to the photovoltaic busbar box. After busbar connection in the photovoltaic busbar box, through a controller, a DC power distribution cabinet, a photovoltaic inverter, and an AC power distribution cabinet, they are used in a supporting manner to form a complete photovoltaic power generation system and realize grid connection with the commercial power.

[0003] Currently, during the installation and construction of busbar boxes in photovoltaic power station projects, usually two crossbars are connected to the photovoltaic support with screws, and then the busbar box is installed on the two crossbars. Since the connection between the busbar box and the crossbar is a single-point connection, this results in an insecure installation of the busbar box. For this reason, a fastening device for a photovoltaic busbar box is proposed. Summary of the Utility Model

[0004] The purpose of the embodiments of the present application is to provide a fastening device for a photovoltaic busbar box to solve the problem that currently, during the installation and construction of busbar boxes in photovoltaic power station projects, usually two crossbars are connected to the photovoltaic support with screws, and then the busbar box is installed on the two crossbars. Since the connection between the busbar box and the crossbar is a single-point connection, this results in an insecure installation of the busbar box as mentioned in the above background technique.

[0005] To achieve the above purpose, the embodiments of the present application provide the following technical solution: A fastening device for a photovoltaic busbar box, including a photovoltaic support, on which two mounting frames are installed. On one side of the two mounting frames, a busbar box body is installed, and a fixing and positioning component is arranged at the rear of the busbar box body;

[0006] The fixing and positioning component includes a worm gear, two connecting rods, and two limiting columns. The worm gear is connected to the rear of the busbar box body through a rotating shaft. One end of each of the two connecting rods is connected to one side of the worm gear through a connecting shaft. One end of each of the two limiting columns is hinged to the other end of the two connecting rods respectively. Guide blocks are fixedly connected to the upper and lower sides of the rear of the busbar box body where the worm gear is located. One end of each of the two limiting columns respectively penetrates through the opposite sides of the two guide blocks movably. Two fixing blocks are installed on the right side of the rear of the busbar box body where the worm gear is located, and a worm is rotatably connected between the two fixing blocks.

[0007] Preferably, one end of each of the two mounting brackets is provided with a mounting groove, and a limiting hole is provided on each of the opposite sides of the two mounting brackets.

[0008] Preferably, two fixing plates are fixedly connected to each of the two sides of the busbar trunking body. One end of a connecting bolt penetrates through one side of each of the four fixing plates, and the other end of the connecting bolt is connected to the inside of the mounting groove.

[0009] Preferably, one end of the connecting bolt is threadedly connected with a fixing nut, and one side of the fixing nut abuts against one side of the fixing plate.

[0010] Preferably, the worm is meshed with the outside of the worm gear, and one end of the worm extends to the outside of the fixed block and is fixedly connected with a turntable.

[0011] Preferably, one end of the limiting post matches the limiting hole, and one end of the limiting post is inserted into the limiting hole.

[0012] Preferably, a sealing joint is installed at the bottom of the busbar trunking body, and a one-way air vent valve is installed on one side of the bottom of the busbar trunking body where the sealing joint is located.

[0013] Compared with the prior art, the embodiments of the present application adopting the above technical solutions have the following technical effects: By rotating the turntable in the embodiments of the present application, the worm between the two fixed blocks is driven to rotate, so that the worm drives the worm gear to rotate, and the worm gear then pushes one end of the connecting rod to move. The other end of the connecting rod pushes the limiting post to move inside the guiding block, so that one end of the limiting post penetrates through the limiting hole and is inserted into the mounting groove, and abuts against the inner side of the mounting groove, thereby strengthening the busbar trunking body and improving the stability of the installation of the busbar trunking body. At the same time, one end of the limiting post penetrates through the limiting hole, which can position the position of the busbar trunking body, prevent the busbar trunking body from moving under force on the two mounting brackets, causing the connecting bolts to loosen and affecting the stability of the installation of the busbar trunking body. Moreover, the worm gear and the worm have a self-locking effect, so that the worm gear will not rotate, improving the stability of the fixation of the limiting post. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a schematic structural diagram of an embodiment of the present application;

[0016] Figure 2 Schematic diagram of the busbar box body structure according to an embodiment of the present application;

[0017] Figure 3 Schematic diagram of the bottom structure of the busbar box body according to an embodiment of the present application;

[0018] Figure 4 Schematic diagram of the connecting rod structure according to an embodiment of the present application;

[0019] Figure 5 Schematic diagram of the mounting bracket structure according to an embodiment of the present application.

[0020] Explanation of reference numerals: 1, photovoltaic support; 2, mounting bracket; 3, busbar box body; 4, worm gear; 5, connecting rod; 6, limit post; 7, guide block; 8, fixing block; 9, worm; 10, turntable; 11, limit hole; 12, mounting groove; 13, fixing plate; 14, connecting bolt; 15, fixing nut; 16, sealing joint; 17, one-way air vent valve. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0022] It should be noted that: in the drawings, the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end; in the description of the present application, the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the protection scope of the present application; in the description of the present application, "first", "second", etc. are only used for distinction from each other, rather than indicating their importance and order, etc.

[0023] In the description of the present application, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a movable connection, or a detachable connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components, etc. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0024] Please refer to Figures 1-5 , an embodiment of the present application provides a fastening device for a photovoltaic busbar box, which includes a photovoltaic bracket 1. Two mounting brackets 2 are installed on the photovoltaic bracket 1. A busbar box body 3 is installed on one side of the two mounting brackets 2, and a fixing and positioning component is arranged at the rear side of the busbar box body 3.

[0025] By setting the fixing and positioning component, the stability of the installation of the busbar box body 3 can be improved. At the same time, one end of the limit post 6 penetrates through the inside of the limit hole 11, which can position the position of the busbar box body 3, preventing the busbar box body 3 from moving under force on the two mounting brackets 2, causing the connection bolts 14 to become loose and affecting the stability of the installation of the busbar box body 3. Moreover, there is a self-locking effect between the worm gear 4 and the worm 9, so that the worm gear 4 will not rotate, improving the stability of the fixation of the limit post 6;

[0026] The fixing and positioning component includes a worm gear 4, two connecting rods 5 and two limit posts 6. The worm gear 4 is connected to the rear side of the busbar box body 3 through a rotating shaft. One end of each of the two connecting rods 5 is connected to one side of the worm gear 4 through a connecting shaft. One end of each of the two limit posts 6 is hinged to the other end of the two connecting rods 5 respectively. Guide blocks 7 are fixedly connected to the upper and lower sides of the worm gear 4 on the rear side of the busbar box body 3. One end of each of the two limit posts 6 movably penetrates through the opposite sides of the two guide blocks 7 respectively. Two fixing blocks 8 are installed on the rear side of the busbar box body 3 on the right side of the worm gear 4. A worm 9 is rotatably connected between the two fixing blocks 8. The worm 9 is meshed and connected to the outside of the worm gear 4. One end of the worm 9 extends to the outside of the fixing block 8 and is fixedly connected to a turntable 10; by rotating the turntable 10 to drive the worm 9 between the two fixing blocks 8 to rotate, the worm 9 drives the worm gear 4 to rotate, and the worm gear 4 then pushes one end of the connecting rod 5 to move. The other end of the connecting rod 5 pushes the limit post 6 to move inside the guide block 7, so that one end of the limit post 6 penetrates through the limit hole 11 and inserts into the installation groove 12, and abuts against the inner side of the installation groove 12, then the busbar box body 3 can be reinforced.

[0027] In order to position the position of the busbar box body 3; one end of each of the two mounting brackets 2 is provided with a mounting groove 12, and a limiting hole 11 is provided on one side of the two mounting brackets 2 facing each other. One end of the limiting column 6 is matched with the limiting hole 11. One end of the limiting column 6 is inserted into the interior of the limiting hole 11. One end of the limiting column 6 passes through the limiting hole 11 and is inserted into the interior of the mounting groove 12 and abuts against the inner side of the mounting groove 12, so as to reinforce and position the busbar box body 3; both sides of the busbar box body 3 are fixedly connected with two fixing plates 13 each. One end of a connecting bolt 14 penetrates through one side of the four fixing plates 13. The other end of the connecting bolt 14 is connected to the interior of the mounting groove 12. One end of the connecting bolt 14 is threadedly connected with a fixing nut 15. One side of the fixing nut 15 abuts against one side of the fixing plate 13; when the busbar box body 3 needs to be installed, by installing the two mounting brackets 2 on the photovoltaic support 1, then inserting one end of the connecting bolt 14 into the interior of the mounting groove 12, connecting the connecting bolt 14 with the fixing plate 13, and then fixing the connecting bolt 14 on the fixing plate 13 through the fixing nut 15, the installation of the busbar box body 3 can be completed.

[0028] A sealing joint 16 is installed at the bottom of the busbar box body 3, and the sealing joint 16 can seal the connection line; a one-way air vent valve 17 is installed on one side of the bottom of the busbar box body 3 where the sealing joint 16 is located. The one-way air vent valve 17 can balance the air pressure inside and outside the busbar box body 3 and prevent condensation inside the busbar box body 3 at the same time.

[0029] The model of the busbar box body 3 is: YL-GFZNX-DC1500.

[0030] Working principle or structural principle. When installing the busbar box body 3, install the two mounting brackets 2 on the photovoltaic bracket 1, then insert one end of the connecting bolt 14 into the interior of the mounting groove 12, connect the connecting bolt 14 with the fixing plate 13, and then fix the connecting bolt 14 on the fixing plate 13 through the fixing nut 15 to complete the installation of the busbar box body 3. When it is necessary to reinforce and position the busbar box body 3, rotate the turntable 10. The turntable 10 drives the worm 9 between the two fixing blocks 8 to rotate, causing the worm 9 to drive the worm gear 4 to rotate. The worm gear 4 then pushes one end of the connecting rod 5 to move, and the other end of the connecting rod 5 pushes the limit post 6 to move inside the guide block 7, so that one end of the limit post 6 penetrates through the limit hole 11 and inserts into the interior of the mounting groove 12 and abuts against the inner side of the mounting groove 12, thereby reinforcing the busbar box body 3 and improving the stability of the installation of the busbar box body 3. At the same time, one end of the limit post 6 penetrates through the interior of the limit hole 11, which can position the position of the busbar box body 3, prevent the busbar box body 3 from moving under force on the two mounting brackets 2, causing the connecting bolt 14 to loosen and affecting the stability of the installation of the busbar box body 3. Moreover, there is a self-locking effect between the worm gear 4 and the worm 9, so that the worm gear 4 will not rotate, improving the stability of the fixation of the limit post 6.

[0031] The above are only the preferred embodiments of the embodiments of the present application, and do not limit the patent scope of the embodiments of the present application. Any equivalent structure or equivalent process transformation made by using the description and drawings of the embodiments of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the embodiments of the present application.

Claims

1. A photovoltaic combiner box fastening device, including a photovoltaic bracket, characterized in that: Two mounting frames are installed on the photovoltaic bracket, a combiner box body is installed on one side of the two mounting frames, and a reinforcing positioning component is provided on the rear side of the combiner box body; The reinforced positioning assembly includes a worm gear, two connecting rods and two limit columns, the worm gear is connected to the rear side of the junction box body through a rotating shaft, one end of the two connecting rods is connected to one side of the worm gear through a connecting shaft, one end of the two limit columns is hinged to the other end of the two connecting rods, the rear side of the junction box body is located on the upper and lower sides of the worm gear, and guide blocks are fixedly connected, one end of the two limit columns is movably passed through the opposite side of the two guide blocks, the rear side of the junction box body is located on the right side of the worm gear, and two fixed blocks are installed, and a worm is rotatably connected between the two fixed blocks.

2. The photovoltaic combiner box fastening device according to claim 1, characterized in that: One end of the two mounting frames is provided with a mounting groove, and the opposite side of the two mounting frames is provided with a limiting hole.

3. The photovoltaic combiner box fastening device according to claim 2, characterized in that: Two fixing plates are fixedly connected to both sides of the combiner box body, one end of a connecting bolt passes through one side of each of the four fixing plates, and the other end of the connecting bolt is connected to the inside of the mounting groove.

4. The photovoltaic combiner box fastening device according to claim 3, characterized in that: One end of the connecting bolt is connected to a fixing nut through a thread, and one side of the fixing nut abuts against one side of the fixing plate.

5. The photovoltaic combiner box fastening device according to claim 1, characterized in that: The worm is meshedly connected to the outer side of the worm wheel, and one end of the worm extends to the outer side of the fixed block and is fixedly connected to a rotating disk.

6. The photovoltaic combiner box fastening device according to claim 2, characterized in that: One end of the limiting column matches the limiting hole, and one end of the limiting column is inserted into the limiting hole.

7. The photovoltaic combiner box fastening device according to claim 1, characterized in that: A sealing joint is installed at the bottom of the combiner box body, and a one-way air-permeable valve is installed at one side of the sealing joint at the bottom of the combiner box body.

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