A photovoltaic grid-connected metering box

Abstract

The application relates to the technical field of metering boxes, and discloses a photovoltaic grid-connected metering box which comprises a box body and a box door, the box door is rotationally connected to the box body, a through hole for passing through a wire is formed in the box body, a moving strip is arranged on the through hole, a through hole for passing through the wire is formed in the moving strip, a plurality of moving elastic sheets are arranged on the moving strip, and the moving elastic sheets are deformed towards the axis direction of the through hole; when the wire passes through the through hole, the moving elastic sheets abut against the wire; the wire passes through the through hole, the plurality of moving elastic sheets abut against the wire, the plurality of moving elastic sheets can fix the wire, small animals are limited by the moving strip, the small animals cannot directly drill into the metering box from the through hole, the box body can be formed by injection molding of any one of PC+ABS, PC+ASA gold-containing plastic and PP+LGF (long glass fiber reinforced polypropylene), or the box body can be formed by die molding of high-performance SMC composite material or by mechanical processing and welding of stainless steel material.

Description

Technical Field

[0001] This application relates to the technical field of metering boxes, and in particular to a photovoltaic grid-connected metering box. Background Technology

[0002] The photovoltaic grid-connected metering box is the core power distribution equipment in the photovoltaic power generation system. It undertakes key functions such as power conversion, distribution, metering, protection and grid connection control. The photovoltaic grid-connected metering box is usually installed outdoors, and the wires enter the metering box from the bottom to realize the connection of the wires.

[0003] In related technologies, the metering box includes a box body and a box door. The box door is rotatably connected to the box body. The box body has a placement slot for placing electrical components and a through hole that connects to the placement slot, through which wires pass.

[0004] Since the metering box is located outdoors, the wire extends into the metering box through the perforation. Some small animals may crawl along the outer surface of the wire through the perforation, causing damage to the electrical components inside the metering box. Summary of the Invention

[0005] To address the issue of small animals crawling into the metering box through the perforation, this application provides a photovoltaic grid-connected metering box.

[0006] This application provides a photovoltaic grid-connected metering box, which adopts the following technical solution:

[0007] A photovoltaic grid-connected metering box includes a box body and a box door. The box door is rotatably connected to the box body. The box body has a through hole for wires to pass through. A movable strip is provided on the through hole. The movable strip has a through hole for wires to pass through. The movable strip has a plurality of movable spring pieces. The movable spring pieces deform in the axial direction of the through hole. When the wire passes through the through hole, the movable spring pieces abut against the wire.

[0008] By adopting the above technical solution, the wire passes through the through hole, allowing multiple movable spring pieces to abut against the wire, thus fixing the wire in place. Due to the restriction of small animals by the movable strip, small animals are less likely to crawl directly into the metering box through the through hole, reducing the problem of small animals entering the metering box and causing damage to the electrical components inside. This eliminates the need for staff to frequently clean out small animals from the outdoor metering box.

[0009] Optionally, a movable groove is provided on the perforation, the movable groove extends along the height direction of the box, and the movable strip is slidably connected in the movable groove.

[0010] By adopting the above technical solution, when the staff connects the wire, a portion of the wire is left in the metering box. When a small animal pulls the wire away from the electrical component, the moving bar can move in the moving groove, allowing the moving bar and the wire to move synchronously. This makes it difficult for the small animal to directly separate the wire from the electrical component, thus avoiding the problem of the small animal directly damaging the connection between the wire and the electrical component.

[0011] Optionally, the moving strip is provided with a limiting strip, the moving strip has elastic deformation capability, and the moving strip is provided with a sealing ring, which is sleeved on the wire and located between the limiting strip and the connection point of the moving spring piece abutting the wire.

[0012] By adopting the above technical solution, when the moving strip deforms in the direction of the electrical component, the moving strip drives the limiting strip to protrude in the direction of the electrical component. Since the sealing ring is located between the limiting strip and the connection point of the moving spring against the wire, the moving strip can drive the sealing ring to move. At this time, there is a gap between the connection point of the moving spring and the wire, so that the sealing ring is located at the connection point of the moving spring against the wire, and the sealing ring can fill the gap between the moving spring and the wire. This allows the moving spring to better restrict the movement of the wire through the sealing ring, reducing the possibility that the moving spring will not fix the wire.

[0013] Optionally, a fixed inclined surface is provided on the wall of the moving groove, and the distance between the fixed inclined surface and the electrical component gradually increases along the direction from the moving groove to the through hole. The fixed inclined surface is located on the moving path of the moving strip.

[0014] By adopting the above technical solution, the distance between the fixed inclined surface and the electrical component gradually increases along the direction from the moving groove to the through hole, and the fixed inclined surface is located on the moving path of the moving strip, so that the moving strip can slide along the inclined direction of the fixed inclined surface. Since the distance between the fixed inclined surface and the through hole gradually decreases, the moving strip is not easy to fall directly due to the force of the small animal or the weight of the moving strip. At the same time, when the small animal pulls the wire, the wire causes the moving strip to protrude in the direction away from the electrical component, causing the moving strip to deform the moving spring, so that the moving spring can better abut against the wire, that is, the fixation between the moving strip and the wire is more reliable. Due to the limitation of the fixed inclined surface on the moving strip, it is not easy for the small animal to pull the wire to move.

[0015] Optionally, the limiting strip is inclined toward the electrical component; when the moving strip protrudes away from the electrical component, the limiting strip abuts against the wire.

[0016] By adopting the above technical solution, when the moving strip protrudes in the direction away from the electrical component, the moving strip drives the limiting strip to move in the direction away from the electrical component. Since the limiting strip is tilted in the direction of the electrical component, the limiting strip can abut against the wire, allowing the limiting strip to further restrict the movement of the wire and increase the reliability between the wire and the moving strip.

[0017] Optionally, a driving block is provided in the moving groove, and the driving block is located on the sliding path of the moving strip; when the driving block abuts against the moving strip, the moving strip deforms in a direction away from the driving block, and the moving strip protrudes in a direction away from the electrical components.

[0018] By adopting the above technical solution, when the moving bar moves away from the electrical components, the driving block is located on the sliding path of the moving bar, so that the driving block abuts against the moving bar, thereby reducing the excessive deformation of the moving bar in the direction away from the electrical components and reducing the elastic fatigue caused by excessive deformation of the moving bar.

[0019] Optionally, the moving strip is provided with a first linkage bar, and a linkage wheel is rotatably connected to the wall of the perforation. A second linkage bar is engaged with the linkage wheel, and the linkage wheel and the first linkage bar are engaged with each other. When the moving strip protrudes in a direction away from or towards the electrical component, the first linkage bar drives the second linkage bar to move through the linkage wheel.

[0020] By adopting the above technical solution, when the moving strip moves, it drives the first linkage strip to move, which in turn drives the second linkage strip to move via the linkage wheel. This allows the second linkage strip to move, enabling workers to more intuitively observe the deformation of the moving strip and thus detect whether the wire at the perforation point has been bitten.

[0021] Optionally, the second linkage bar is provided with a toothed block area, and two movable grooves are opened on the second linkage bar. The toothed block area is located between two adjacent movable grooves and is meshed with the linkage wheel. When the moving bar is not moving, the toothed block area abuts against the linkage wheel. When the moving bar protrudes to one side, the linkage wheel is located in the movable groove.

[0022] By adopting the above technical solution, since the toothed block area is located between two adjacent movable slots, when the moving bar protrudes to one side, the toothed block area is meshed with the linkage wheel. The linkage wheel drives the second linkage bar to move through the toothed block area, causing the movable slot in the second linkage bar to move to the linkage wheel. This prevents the linkage wheel from continuing to drive the second linkage bar to move. Even if the small animal does not deform the moving bar, the second linkage bar will not reset, so that the staff can know that the small animal once caused the moving bar to deform.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The wire passes through the through hole, allowing multiple movable springs to abut against the wire, thus fixing the wire in place. Due to the restriction of small animals by the movable strip, it is not easy for small animals to crawl directly into the metering box through the through hole, reducing the problem of small animals entering the metering box and causing damage to the electrical components inside the metering box. This eliminates the need for staff to frequently clean out small animals from the outdoor metering box.

[0025] 2. When the moving strip deforms towards the electrical component, it causes the limiting strip to protrude towards the electrical component. Since the sealing ring is located between the limiting strip and the connection point of the moving spring against the wire, the moving strip can drive the sealing ring to move. At this time, there is a gap between the connection point of the moving spring and the wire, allowing the sealing ring to be located at the connection point of the moving spring against the wire. This enables the sealing ring to fill the gap between the moving spring and the wire, allowing the moving spring to better restrict the movement of the wire through the sealing ring, reducing the possibility of the moving spring failing to fix the wire. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0027] Figure 2 It is along Figure 1 A partial sectional view of line AA in the middle;

[0028] Figure 3 yes Figure 2 Enlarged schematic diagram of part B.

[0029] Reference numerals: 1. Box body; 11. Box door; 12. Placement slot; 13. Perforation; 14. Moving slot; 141. Drive block; 142. Fixed inclined surface; 15. Linkage slot; 151. Linkage wheel; 16. Sliding slot; 161. Second linkage bar; 162. Tooth block area; 163. Movable slot; 2. Moving bar; 21. Through hole; 22. Moving spring; 23. Sealing ring; 24. Limiting bar; 25. First linkage bar. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0031] This embodiment discloses a photovoltaic grid-connected metering box. (Refer to...) Figure 1A photovoltaic grid-connected metering box includes a box body 1 and a box door 11. The box door 11 is rotatably connected to the box body 1. The box body 1 can be injection molded from any one of PC+ABS, PC+ASA gold-containing plastic, or PP+LGF (long glass fiber reinforced polypropylene); or it can be molded from high-performance SMC composite material or machined and welded from stainless steel material.

[0032] Reference Figure 1 and Figure 2 The housing 1 has a placement slot 12 for placing power supply components. The surface of the housing 1 near the ground has multiple through holes 13 that connect to the placement slot 12 and allow wires to pass through. When the wire is inserted into the through hole 13, the wire is partially bent in the placement slot 12, allowing the wire to be pulled out from the placement slot 12 with some slack.

[0033] Reference Figure 2 A movable groove 14 is formed on the wall of the perforation 13, extending along the length of the perforation 13. A movable strip 2 is provided on the housing 1, possessing elastic deformation capability and capable of sliding within the movable groove 14. A through hole 21 for a wire to pass through is formed on the surface of the movable strip 2. Multiple movable spring pieces 22 are fixedly connected to the surface of the movable strip 2, arranged in a circumferential array along the through hole 21, and deforming towards the wire. When a movable spring piece 22 abuts against a wire, the wire is fixed to the movable strip 2.

[0034] Reference Figure 2 A drive block 141 is fixedly connected to the wall of the moving groove 14. The drive block 141 is inclined towards the electrical component, that is, the distance between the drive block 141 and the axis of the through hole 13 gradually decreases along the moving groove 14 towards the electrical component, and the drive block 141 is located on the side of the moving strip 2 away from the electrical component. When the moving strip 2 abuts against the drive block 141, the drive block 141 restricts the moving strip 2 from continuing to deform. At this time, the moving strip 2 is not at its maximum elastic deformation, reducing the possibility of the moving strip 2 being at its maximum elastic fatigue due to excessive pulling.

[0035] Reference Figure 2 When a small animal pulls the wire, the wire causes the moving strip 2 to slide on the fixed inclined plane 142, allowing the moving strip 2 to protrude away from the electrical components. The moving strip 2 drives the moving spring 22 to deform in the direction of the wire, making the connection between the moving spring 22 and the wire more secure and reducing the risk of the small animal pulling the wire directly out.

[0036] Reference Figure 2A fixed inclined surface 142 is provided on the bottom wall of the moving groove 14. The fixed inclined surface 142 extends circumferentially along the moving groove 14. The distance between the fixed inclined surface 142 and the electrical component gradually increases along the direction from the moving groove 14 to the through hole 13. The fixed inclined surface 142 is located on the moving path of the moving strip 2.

[0037] Reference Figure 2 A sealing ring 23 is provided on the movable strip 2, and the sealing ring 23 is sleeved on the outer surface of the wire. Two limiting strips 24 are fixedly connected to the surface of the movable strip 2, and there is an included angle between the two limiting strips 24 and the movable strip 2, that is, the distance between the limiting strips 24 and the axis of the through hole 13 gradually increases along the direction from the limiting strips 24 to the movable strip 2. The connection point of the movable spring piece 22 abutting the wire is located on the side of the sealing ring 23 away from the limiting strips 24, and the limiting strips 24 abut the wire.

[0038] Reference Figure 2 When the small animal pushes the moving strip 2 directly toward the electrical component, the moving strip 2 protrudes toward the electrical component. The moving strip 2 drives the limiting strip 24 to move, which in turn pushes the sealing ring 23 to move toward the connection between the moving spring 22 and the wire. This allows the sealing ring 23 to fill the gap between the moving spring 22 and the wire, enabling the moving spring 22 to more stably restrict the movement of the wire.

[0039] Reference Figure 2 When the small animal pulls the wire, the wire causes the moving strip 2 to move away from the electrical components. The moving strip 2 causes the limiting strip 24 to move, allowing the limiting strip 24 to abut against the outer surface of the wire, thereby further restricting the possibility of the wire moving at the through hole 21.

[0040] Reference Figure 2 and Figure 3 A first linkage bar 25 is fixedly connected to the surface of the movable bar 2, and the first linkage bar 25 slides along the length direction of the through hole 13. A linkage groove 15 is provided on the wall of the through hole 13, and a linkage wheel 151 is rotatably connected in the linkage groove 15. The linkage wheel 151 and the first linkage bar 25 mesh with each other.

[0041] Reference Figure 2 and Figure 3 Multiple sliding grooves 16 are formed on the wall of the placement groove 12, and the sliding grooves 16 connect the through hole 13 and the linkage groove 15. A second linkage bar 161 is slidably connected in the sliding groove 16. The surface of the second linkage bar 161 is provided with a toothed block area 162, which has multiple teeth, and is meshed with the linkage wheel 151. Two movable grooves 163 are formed on the surface of the second linkage bar 161 where the toothed block area 162 is located, and the toothed block area 162 is located between the two movable grooves 163.

[0042] Reference Figure 3 When the linkage wheel 151 abuts the toothed block area 162, the linkage wheel 151 drives the second linkage bar 161 to move through the toothed block area 162, so that the linkage wheel 151 is located in the movable groove 163. At this time, the second linkage bar 161 will not move, so that the staff can directly know that a small animal has crawled through the hole 13, and let the staff check whether the outer surface of the wire has been gnawed.

[0043] The implementation principle of a photovoltaic grid-connected metering box in this application embodiment is as follows: When a small animal crawls into the perforation 13, the small animal pulls the wire. Since the movable spring 22 abuts against the wire, the wire can drive the movable bar 2 to move, allowing the movable bar 2 to move along the inclined direction of the fixed inclined surface 142, so that the movable bar 2 can protrude in the direction away from the electrical components, so that the movable bar 2 drives the movable spring 22 to move towards the wire, and the movable bar 2 drives the limiting bar 24 to abut against the outer surface of the wire, so that the limiting bar 24 can further restrict the movement of the wire. At this time, the movable bar 2 drives the linkage wheel 151 to rotate through the first linkage bar 25, so that the linkage wheel 151 drives the second linkage bar 161 to move through the tooth block area 162, so that the staff can directly check whether the second linkage bar 161 has moved to determine whether a small animal has entered the perforation 13.

[0044] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. A photovoltaic grid-connected metering box, comprising a box body (1) and a box door (11), the box door (11) being rotatably connected to the box body (1), and a through hole (13) being formed in the box body (1) for a wire to pass through, characterized in that: The mobile strip (2) is provided on the perforation (13), the mobile strip (2) is provided with a through hole (21) for the wire to pass through, a plurality of mobile spring sheets (22) are arranged on the mobile strip (2), and the mobile spring sheets (22) are deformed towards the axis direction of the through hole (21); when the wire passes through the through hole (21), the mobile spring sheets (22) abut against the wire. The mobile groove (14) is arranged on the perforation (13) and extends along the height direction of the box body (1), and the mobile strip (2) is slidably connected in the mobile groove (14). The mobile strip (2) is provided with a limiting strip (24), the mobile strip (2) has an elastic deformation capacity, the mobile strip (2) is provided with a sealing ring (23), the sealing ring (23) is sleeved on the wire, and the sealing ring (23) is located between the connecting position of the limiting strip (24) and the mobile spring sheet (22) abutting against the wire. The fixed inclined surface (142) is arranged on the groove wall of the mobile groove (14), the distance between the fixed inclined surface (142) and the electrical element gradually increases in the direction from the mobile groove (14) to the perforation (13), and the fixed inclined surface (142) is located on the movement path of the mobile strip (2). The driving block (141) is arranged in the mobile groove (14) and located on the sliding path of the mobile strip (2); when the driving block (141) abuts against the mobile strip (2), the mobile strip (2) is deformed away from the driving block (141), and the mobile strip (2) protrudes away from the electrical element.

2. A photovoltaic grid-tied metering box according to claim 1, characterized in that: The limiting strip (24) is inclined towards the electrical element; when the mobile strip (2) protrudes away from the electrical element, the limiting strip (24) abuts against the wire.

3. A photovoltaic grid-tied metering box according to claim 1, characterized in that: The first linkage strip (25) is arranged on the mobile strip (2), the linkage wheel (151) is rotatably connected to the hole wall of the perforation (13), the second linkage strip (161) is meshingly connected to the linkage wheel (151), and the linkage wheel (151) and the first linkage strip (25) are meshed with each other; when the mobile strip (2) protrudes away from or towards the electrical element, the first linkage strip (25) drives the second linkage strip (161) to move through the linkage wheel (151).

4. A photovoltaic grid-tie metering box according to claim 3, wherein: The second linkage strip (161) is provided with a tooth block area (162), two movable grooves (163) are arranged on the second linkage strip (161), the tooth block area (162) is located between the adjacent two movable grooves (163), and the tooth block area (162) is meshingly connected to the linkage wheel (151); when the mobile strip (2) is not moved, the tooth block area (162) abuts against the linkage wheel (151); when the mobile strip (2) protrudes to one side, the linkage wheel (151) is located in the movable groove (163).

Images