A household low-voltage photovoltaic grid-connected access box

Abstract

The utility model relates to a household low-voltage photovoltaic grid-connected access box, including a box body and a box door, wherein a mounting plate and a plurality of sliding assemblies are arranged in the box body, wherein the sliding assemblies include a first support rod, a first sliding seat, a second support rod and a second sliding seat, wherein the first support rod is fixedly arranged in the box body, the first sliding seat is slidably arranged on the first support rod, the second support rod is fixedly connected to the first sliding seat, the second sliding seat is slidably arranged on the second support rod, and the mounting plate is fixedly connected to a plurality of second sliding seats. In this household low-voltage grid-connected access box, each functional device is mounted on the mounting plate, and when each functional device needs to be inspected and repaired, the mounting plate is pulled out of the box body to obtain a larger operable space, which is convenient for maintenance and inspection of each functional device, thereby ensuring the quality of maintenance and inspection.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution equipment, in particular to a household low-voltage photovoltaic grid-connected access box. Background Art

[0002] The low-voltage photovoltaic grid-connected access box exists in the photovoltaic system as the total outlet of the photovoltaic power station. It is a distribution device connecting the photovoltaic power station and the power grid. Its main function is to serve as the dividing point between the photovoltaic power generation system and the power grid. By installing functional devices in the box, it can achieve power isolation, short-circuit protection, electric energy metering, power supply connection indication, lightning protection and other functions.

[0003] Existing photovoltaic grid-connected access boxes are generally composed of a box body and a box door, and various functional devices are installed on the back panel of the box body. However, during use, the photovoltaic grid-connected access box needs to be regularly maintained and overhauled on the internal functional devices. Since the functional devices are limited by the internal space of the box body after installation, the maintenance and overhaul operations are not convenient enough, and it is difficult to ensure the quality of the maintenance and overhaul.

[0004] In view of the above problems, the present invention makes improvements. Utility Model Content

[0005] The utility model provides a household low-voltage photovoltaic grid-connected access box, which solves the above-mentioned problems existing in the prior art during use.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A household low-voltage photovoltaic grid-connected access box includes a box body and a box door, wherein a mounting plate and a plurality of sliding assemblies are arranged in the box body, wherein the sliding assemblies include a first support rod, a first sliding seat, a second support rod and a second sliding seat, wherein the first support rod is fixedly arranged in the box body, the first sliding seat is slidably arranged on the first support rod, the second support rod is fixedly connected to the first sliding seat, the second sliding seat is slidably arranged on the second support rod, and the mounting plate is fixedly connected to a plurality of second sliding seats.

[0008] Preferably, two first support rods are respectively arranged on the bottom plate and the top plate of the box body, and the opening of the box body is folded inward to form a limiting edge that blocks the sliding path of the first sliding seat, and the second support rod can slide with the first sliding seat and pass through the opening of the box body, and a limiting block is fixedly connected to each end of the second support rod.

[0009] Preferably, the first sliding seat is provided with a first steel ball hole, in which a first limiting steel ball and a first limiting spring are arranged, and the first limiting steel ball is pressed tightly against the first support rod under the action of the first limiting spring, and the first support rod is provided with a first limiting hole located on the moving path of the first limiting steel ball and matching the first limiting steel ball, and the second sliding seat is provided with a second steel ball hole, in which a second limiting steel ball and a second limiting spring are arranged, and the second limiting steel ball is pressed tightly against the second support rod under the action of the second limiting spring, and the second support rod is provided with a second limiting hole located on the moving path of the second limiting steel ball and matching the second limiting steel ball.

[0010] Preferably, a fixing rod is fixedly connected to the rear side plate of the box body, and a fixing hole opposite to the end of the fixing rod is opened on the mounting plate. When the mounting plate slides to allow the fixing rod to pass through the fixing hole, a fixing bolt is screwed on the fixing rod.

[0011] Preferably, a handle is fixedly connected to the mounting plate.

[0012] Preferably, the box door comprises a left door and a right door, and the left door and the right door are respectively slidably arranged on the opening of the box body.

[0013] Preferably, a sliding groove is folded on the opening of the box body, and sliding parts retained in the sliding groove are folded on the left door and the right door. A limiting groove parallel to the sliding direction of the left door and the right door is opened on the box door, and a limiting rod retained in the limiting groove is fixedly connected to each of the left door and the right door.

[0014] Preferably, the left door and the right door are each fixedly connected to a relative handle, and a plurality of magnets are respectively provided on the relative surfaces of the two handles.

[0015] Preferably, a waterproof cover is provided at the upper end of the box body, a first heat dissipation hole is opened on the top plate of the box body, and a cooling fan is arranged on the top plate of the box body opposite to the heat dissipation hole and located in the waterproof cover, and a second heat dissipation hole is opened on the waterproof cover.

[0016] To sum up, the beneficial effect of the utility model is that the mounting plate is used to install various functional components, and the mounting plate can slide to the outside of the box through the opening of the box under the action of the sliding assembly, so that the mounting plate and the functional components thereon will not be blocked by the box, and a larger operating space is obtained when maintaining and inspecting the various functional components, thereby facilitating the maintenance and inspection operations and ensuring the quality of the maintenance and inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the structure when the mounting plate is fixed in the box body in the utility model;

[0019] Figure 2 It is a structural schematic diagram of the utility model when the mounting plate slides out of the box body;

[0020] Figure 3 It is an exploded schematic diagram of the utility model;

[0021] Figure 4 It is a cross-sectional schematic diagram of the utility model;

[0022] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0023] Figure 6 It is an exploded schematic diagram of the sliding assembly in the utility model.

[0024] In the figure: 1. box body; 11. limiting edge; 12. fixing rod; 13. fixing bolt; 14. sliding groove; 15. limiting groove; 16. first heat dissipation hole; 2. box door; 21. left door; 22. right door; 23. sliding part; 24. limiting rod; 25. handle; 26. magnet; 3. mounting plate; 31. fixing hole; 32. handle; 4. sliding assembly; 41. first support rod; 411. first limiting hole; 42. first sliding seat; 421. first steel ball hole; 422. first limiting steel ball; 423. first limiting spring; 43. second support rod; 431. limiting block; 432. second limiting hole; 44. second sliding seat; 441. second steel ball hole; 442. second limiting steel ball; 443. second limiting spring; 5. waterproof cover; 51. second heat dissipation hole; 6. cooling fan. DETAILED DESCRIPTION

[0025] The following will be combined with the attached embodiment of the utility model Figure 1-6 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] As shown in the figure, a household low-voltage photovoltaic grid-connected access box includes a box body 1 and a box door 2. A mounting plate 3 and a plurality of sliding assemblies 4 are arranged in the box body 1. The sliding assembly 4 includes a first support rod 41, a first sliding seat 42, a second support rod 43 and a second sliding seat 44. The first support rod 41 is fixedly arranged in the box body 1, the first sliding seat 42 is slidably arranged on the first support rod 41, the second support rod 43 is fixedly connected to the first sliding seat 42, the second sliding seat 44 is slidably arranged on the second support rod 43, and the mounting plate 3 is fixedly connected to a plurality of second sliding seats 44.

[0027] Specifically, two first support rods 41 are respectively arranged on the bottom plate and the top plate of the box body 1, and the opening of the box body 1 is folded inward to form a limiting edge 11 that blocks the sliding path of the first sliding seat 42. The second support rod 43 can slide with the first sliding seat 42 and pass through the opening of the box body 1, and a limiting block 431 is fixedly connected to each end of the second support rod 43.

[0028] In the above embodiment, each functional device is installed on the mounting plate 3. When each functional device needs to be maintained and repaired, the box door 2 is opened, and the mounting plate 3 is pulled outward, and the second sliding seat 44 is driven to slide on the second support rod 43 to make the mounting plate 3 slide outward in the box body 1. When the second sliding seat 44 slides to abut against the limit block 431 at the front end of the second support rod 43, the second sliding seat 44 drives the second support rod 43 and drives the first sliding seat 42 to slide outward on the first support rod 41, so that the second support rod 43 gradually passes through the opening of the box body 1, and the mounting plate 3 gradually slides outward through the opening of the box body 1. When the first sliding seat 42 slides to abut against the limit edge 11, the mounting plate 3 completely passes through the opening of the box body 1 and is located outside the box body 1. At this time, the surrounding sides of the mounting plate 3 will not be blocked by the box body 1, which provides a large operating space for maintaining and inspecting the functional components of the mounting plate 3, facilitates the maintenance and inspection operations, and thus ensures the quality of maintenance and inspection. After the maintenance and inspection operations are completed, the mounting plate 3 is pushed inward, driving the second sliding seat 44 to slide inward on the second support rod 43. When the second sliding seat 44 slides to abut against the limit block 431 at the rear end of the second support rod 43, it drives the first support rod 41 and the first sliding seat 42 to slide inward on the first support rod 41, and the mounting plate 3 slides through the opening of the box body 1 back into the box body 1. During the sliding process of the above-mentioned mounting plate 3, the four sliding assemblies 4 are distributed on the four corners of the mounting plate 3, thereby ensuring the stability of the mounting plate 3 during sliding.

[0029] Preferably, the first sliding seat 42 is provided with a first steel ball hole 421, in which a first limiting steel ball 422 and a first limiting spring 423 are arranged, the first limiting steel ball 422 is pressed against the first support rod 41 under the action of the first limiting spring 423, the first support rod 41 is provided with a first limiting hole 411 located on the moving path of the first limiting steel ball 422 and matching with the first limiting steel ball 422, and the second sliding seat 44 is provided with a second steel ball hole 44 1, a second limiting steel ball 442 and a second limiting spring 443 are arranged in the second steel ball hole 441, and the second limiting steel ball 442 is pressed against the second support rod 43 under the action of the second limiting spring 443, and the second support rod 43 is provided with a second limiting hole 432 which is located on the moving path of the second limiting steel ball 442 and matches the second limiting steel ball 442. When the first sliding seat 42 and the second sliding seat 44 slide on the first support rod 41 and the second support rod 43 respectively, the first limiting steel ball 442 is pressed against the second support rod 43 by the second limiting spring 443. The first and second limiting steel balls 422 and 442 are respectively pressed against the first support rod 41 and the second support rod 43 under the action of the first limiting springs 423 and the second limiting springs 443, applying resistance to the sliding of the first sliding seat 42 and the second sliding seat 44, so that the sliding of the mounting plate 3 has a certain damping sense, thereby ensuring the stability of the mounting plate 3 during sliding. When the first sliding seat 42 and the second sliding seat 44 slide to the positions respectively against the limiting blocks 431 at the front ends of the limiting edges 11 and the second support rod 43, the first limiting steel balls 422 and the second limiting steel balls 442 are respectively inserted into the first limiting holes 411 and the second limiting holes 432 under the action of the first limiting springs 423 and the second limiting springs 443, respectively, applying limit to the sliding of the first sliding seat 42 and the second sliding seat 44 on the first support rod 41 and the second support rod 43, thereby making the mounting plate 3 more stably maintained outside the box body 1 after completely passing through the opening of the box body 1, facilitating the maintenance and inspection of the functional components of the mounting plate 3, and ensuring the quality of maintenance and inspection.

[0030] Preferably, a fixing rod 12 is fixedly connected to the rear side plate of the box body 1, and a fixing hole 31 opposite to the end of the fixing rod 12 is opened on the mounting plate 3. When the mounting plate 3 slides to make the fixing rod 12 pass through the fixing hole 31, a fixing bolt 13 is screwed on the fixing rod 12. When the mounting plate 3 returns to the box body 1 with the sliding assembly 4 and the second support rod 43 abuts against the rear side plate of the box body 1, the fixing rod 12 passes through the fixing hole 31. After tightening the fixing bolt 13 so that the fixing bolt 13 is tightly against the mounting plate 3, the mounting plate 3 is fixed by the cooperation of the fixing bolt 13 and the fixing rod 12, so that the mounting plate 3 is more stably maintained in the box body 1, thereby ensuring the stability of each functional element on the mounting plate 3 during operation.

[0031] Preferably, a handle 32 is fixedly connected to the mounting plate 3 , and the handle 32 facilitates the operation of pulling the mounting plate 3 .

[0032] Furthermore, the box door 2 includes a left door 21 and a right door 22 , and the left door 21 and the right door 22 are respectively arranged on the opening of the box body 1 in a horizontally slidable manner.

[0033] Specifically, the left door 21 and the right door 22 are slidably arranged on the box body 1: the opening of the box body 1 is folded to form a sliding groove 14, and the left door 21 and the right door 22 are folded to form sliding parts 23 retained in the sliding groove 14, and the box door 2 is provided with a limiting groove 15 parallel to the sliding direction of the left door 21 and the right door 22, and the left door 21 and the right door 22 are each fixedly connected to a limiting rod 24 retained in the limiting groove 15.

[0034] In the above preferred embodiment, the left door 21 and the right door 22 are slid to the left and right respectively to open the box door 2, so that the mounting plate 3 can slide to the outside of the box body 1 along with the sliding assembly 4. After the mounting plate 3 slides to the outside of the box body 1, the sideways sliding left door 21 and right door 22 will not block the two sides of the mounting plate 3, thereby providing a larger operating space for the maintenance and overhaul of functional components and facilitating the maintenance and overhaul operations. In the process of the left door 21 and the right door 22 sliding on the box body 1, the limit rod 24 slides in the limit groove 15 to limit the sliding of the left door 21 and the right door 22, so that the left door 21 and the right door 22 can always remain on the box door 2 without falling off the box door 2, thereby facilitating the sliding of the left door 21 and the right door 22 to open or close the box door 2.

[0035] Preferably, the left door 21 and the right door 22 are each fixedly connected to a relative handle 25, and a plurality of magnets 26 are respectively provided on the relative surfaces of the two handles 25. The handles 25 facilitate the operation of sliding the left door 21 and the right door 22. When the left door 21 and the right door 22 slide toward each other to close the box door 2, the magnets on the two handles 25 attract each other, so that the box door 2 is kept in a closed state more stably.

[0036] Furthermore, a waterproof cover 5 is provided at the upper end of the box body 1, a first heat dissipation hole 16 is opened on the top plate of the box body 1, and a cooling fan 6 is provided on the top plate of the box body 1 opposite to the heat dissipation hole and located in the waterproof cover 5, and a second heat dissipation hole 51 is opened on the waterproof cover 5.

[0037] In the above preferred embodiment, the waterproof cover 5 guides the water dripping thereon, thereby achieving a waterproof effect. When the functional components of the mounting plate 3 are working, the air-heating fan works and cooperates with the first heat dissipation hole 16 and the second heat dissipation hole 51 to discharge the heat accumulated in the box body 1 out of the box body 1, thereby achieving a better heat dissipation effect and ensuring the stability of the functional components when working.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A household low-voltage photovoltaic grid-connected access box, comprising a box body (1) and a box door (2), characterized in that: The box body (1) is provided with a mounting plate (3) and a plurality of sliding assemblies (4). The sliding assemblies (4) include a first support rod (41), a first sliding seat (42), a second support rod (43) and a second sliding seat (44). The first support rod (41) is fixedly arranged in the box body (1). The first sliding seat (42) is slidably arranged on the first support rod (41). The second support rod (43) is fixedly connected to the first sliding seat (42). The second sliding seat (44) is slidably arranged on the second support rod (43). The mounting plate (3) is fixedly connected to the plurality of second sliding seats (44).

2. According to claim 1, a household low-voltage photovoltaic grid-connected access box is characterized in that: Two of the first support rods (41) are respectively arranged on the bottom plate and the top plate of the box body (1); a limiting edge (11) is formed on the opening of the box body (1) by being folded inwards to block the sliding path of the first sliding seat (42); the second support rod (43) can slide along with the first sliding seat (42) and pass through the opening of the box body (1); and a limiting block (431) is fixedly connected to each end of the second support rod (43).

3. A household low-voltage photovoltaic grid-connected access box according to claim 2, characterized in that: The first sliding seat (42) is provided with a first steel ball hole (421), a first limiting steel ball (422) and a first limiting spring (423) are arranged in the first steel ball hole (421), the first limiting steel ball (422) is tightly pressed against the first support rod (41) under the action of the first limiting spring (423), and the first supporting rod (41) is provided with a first limiting hole (411) located on the moving path of the first limiting steel ball (422) and matching with the first limiting steel ball (422), The second sliding seat (44) is provided with a second steel ball hole (441), a second limiting steel ball (442) and a second limiting spring (443) are arranged in the second steel ball hole (441), the second limiting steel ball (442) is tightly pressed against the second support rod (43) under the action of the second limiting spring (443), and the second support rod (43) is provided with a second limiting hole (432) located on the moving path of the second limiting steel ball (442) and matching with the second limiting steel ball (442).

4. A household low-voltage photovoltaic grid-connected access box according to claim 3, characterized in that: A fixing rod (12) is fixedly connected to the rear side plate of the box body (1), and a fixing hole (31) opposite to the end of the fixing rod (12) is opened on the mounting plate (3). When the mounting plate (3) slides to allow the fixing rod (12) to pass through the fixing hole (31), a fixing bolt (13) is screwed onto the fixing rod (12).

5. A household low-voltage photovoltaic grid-connected access box according to claim 4, characterized in that: A handle (32) is fixedly connected to the mounting plate (3).

6. A household low-voltage photovoltaic grid-connected access box according to claim 1, characterized in that: The box door (2) comprises a left door (21) and a right door (22), and the left door (21) and the right door (22) are respectively arranged on the opening of the box body (1) in a horizontally slidable manner.

7. A household low-voltage photovoltaic grid-connected access box according to claim 6, characterized in that: The opening of the box body (1) is folded to form a sliding groove (14), the left door (21) and the right door (22) are folded to form sliding parts (23) held in the sliding groove (14), the box door (2) is provided with a limiting groove (15) parallel to the sliding direction of the left door (21) and the right door (22), and the left door (21) and the right door (22) are each fixedly connected to a limiting rod (24) held in the limiting groove (15).

8. The household low-voltage photovoltaic grid-connected access box according to claim 6, characterized in that: The left door (21) and the right door (22) are each fixedly connected to a handle (25) facing each other, and a plurality of magnets (26) are respectively arranged on the facing surfaces of the two handles (25).

9. The household low-voltage photovoltaic grid-connected access box according to claim 1, characterized in that: A waterproof cover (5) is provided at the upper end of the box body (1), a first heat dissipation hole (16) is provided on the top plate of the box body (1), and a heat dissipation fan (6) is provided on the top plate of the box body (1) opposite to the heat dissipation hole and located inside the waterproof cover (5), and a second heat dissipation hole (51) is provided on the waterproof cover (5).

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