Quick replacement type low-voltage power distribution cabinet

Abstract

The utility model discloses a quick replacement type low-voltage power distribution cabinet, which comprises a cabinet body, a mounting plate is arranged in the cabinet body in a sliding manner, a first wiring terminal group is arranged on the mounting plate, a back plate is detachably arranged on the back surface of the cabinet body, and a second wiring terminal group is arranged on the back plate. Connecting wires are correspondingly arranged between the first wiring terminal set and the second wiring terminal set, the connecting wires are arranged in a spring-shaped telescopic mode, electrical elements are installed on the installation plate, installation lugs are arranged on the electrical elements, pressing pieces are arranged on the outer sides of the installation lugs, and locking bolts are arranged at the ends, away from the installation lugs, of the pressing pieces. According to the utility model, the operation convenience of the cabinet body during replacement of internal electrical elements can be improved, the cabinet body is convenient to disassemble and assemble, and the replacement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage power distribution cabinets, and more particularly to a quick-replacement low-voltage power distribution cabinet. Background Art

[0002] Low-voltage distribution cabinet is an important equipment in the power system. It is mainly used to receive high-voltage electrical energy, reduce it to a low-voltage level suitable for users through a transformer, and distribute and control it.

[0003] Low-voltage distribution cabinets are equipped with circuit breakers, transformers, capacitors, various relays, protectors and other electrical components to achieve electrical automation control and protection. During the use of low-voltage distribution cabinets, if the electrical components are damaged, they need to be inspected and replaced.

[0004] However, in the prior art, electrical components are mostly fixed to the cabinet body of the low-voltage distribution cabinet through a fixing ear structure using screws or other structures. When replacing an electrical component, it is necessary to unscrew the screws used for the electrical component and install the new electrical component. During this process, the screws need to be realigned and repeatedly tightened, which is inefficient. In addition, the screws that are unscrewed are easily lost, which affects the efficiency of replacing the electrical component.

[0005] In addition, most of the existing electrical components are directly installed inside the cabinet of the low-voltage distribution cabinet. When they are repaired and replaced, they need to be carried out inside the low-voltage distribution cabinet. The operating space is small, which affects the operational flexibility during repair and replacement, thereby affecting the replacement efficiency of the electrical components inside the low-voltage distribution cabinet and the repair efficiency. Utility Model Content

[0006] (1) Technical problems solved

[0007] In response to the problems existing in the prior art, the utility model provides a quick-replacement low-voltage distribution cabinet to solve the technical problems mentioned in the background technology that the low-voltage distribution cabinet in the prior art has small operating space and is inconvenient to install and disassemble when undergoing maintenance or replacing electrical components.

[0008] (2) Technical solution

[0009] To achieve the above objectives, the present invention provides the following technical solutions:

[0010] A quick-replacement low-voltage distribution cabinet comprises a cabinet body, a mounting plate slidingly provided inside the cabinet body, a first terminal group provided on the mounting plate, a back panel detachably provided on the back side of the cabinet body, a second terminal group provided on the back panel, connecting wires correspondingly provided between the first terminal group and the second terminal group, the connecting wires being spring-shaped and retractable, electrical components mounted on the mounting plate, mounting ears provided on the electrical components, a clamping piece provided on the outside of the mounting ear, a locking bolt provided on the end of the clamping piece away from the mounting ear, and a threaded connection between the locking bolt and the mounting plate.

[0011] The present invention is further configured such that the pressing member includes a pressing plate, and a limiting structure is provided between the pressing plate, the mounting ear and the mounting plate to achieve pressing and fixing between the mounting ear and the mounting plate.

[0012] The utility model is further configured such that the limiting structure includes a limiting protrusion arranged on the inner side of the clamping plate, a mounting hole is provided on the mounting ear, and a limiting groove is correspondingly provided on the mounting plate. The limiting protrusion can pass through the mounting hole and engage into the limiting groove, thereby improving the installation stability of the mounting ear and thus improving the installation stability of the electrical components.

[0013] The present invention is further configured such that a positioning protrusion is provided on the inner side of the mounting ear, and a positioning groove is provided on the mounting plate to improve the precise positioning of the electrical components during installation, and improve the convenience and stability of replacement.

[0014] The utility model is further configured such that a connecting groove is provided on the clamping plate, and the clamping plate is sleeved on the bolt column of the locking bolt through the connecting groove, and a damping gasket is provided on the inner wall of the connecting groove to achieve stable connection of the clamping plate on the locking bolt.

[0015] The utility model is further configured such that two sets of limiting slide rails are symmetrically provided at the top and bottom ends of the interior of the cabinet, and sliding seats are provided at the top and bottom of the mounting plate. The sliding seats are provided with sliding grooves to cooperate with the limiting slide rails, and the sliding grooves and the limiting slide rails are slidably matched to realize a sliding connection between the mounting plate and the inner wall of the cabinet.

[0016] The utility model is further configured such that a locking seat is provided at the bottom of the mounting plate, a locking piece is threadedly provided on the locking seat, and a locking groove is provided on the inner bottom wall of the cabinet to cooperate with the locking piece, so as to achieve locking and fixation when the mounting plate is moved to a suitable position.

[0017] The present invention is further configured such that a cabinet door is provided on the front of the cabinet, one side of the cabinet door is hinged to the cabinet, and a protective lock is provided between the other side and the cabinet to achieve sealed protection of the interior space of the cabinet.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the present invention provides a quick-change low-voltage power distribution cabinet with the following beneficial effects:

[0020] 1. The utility model includes a cabinet body, a mounting plate is slidingly provided inside the cabinet body, a first terminal group is provided on the mounting plate, a back plate is detachably provided on the back of the cabinet body, a second terminal group is provided on the back plate, connecting wires are correspondingly provided between the first terminal group and the second terminal group, the connecting wires are spring-shaped and retractable, and electrical components are installed on the mounting plate. In this way, when installing the electrical components, the mounting plate can be pulled outward, thereby increasing the operating space of the low-voltage distribution cabinet when replacing the internal electrical components, improving the convenience of replacing the electrical components inside the low-voltage distribution cabinet, and improving the replacement efficiency.

[0021] 2. In the present invention, a first terminal group is provided on the mounting plate, and a second terminal group is provided on the back plate. The first terminal group and the second terminal group are connected by a connecting wire, and the connecting wire is spring-shaped and retractable. In this way, when the mounting plate moves, a retractable space for the connecting wire can be provided to ensure the wiring stability of the electrical components. Here, the first terminal group is used to connect to the external power line, and the second terminal group is used to connect to the electrical components installed on the mounting plate.

[0022] 3. The utility model is provided with a mounting ear on the electrical component, a pressing piece is provided on the outside of the mounting ear, a locking bolt is provided at the end of the pressing piece away from the mounting ear, and the locking bolt is threadedly connected to the mounting plate, wherein the pressing piece includes a pressing plate, and a limiting structure is provided between the pressing plate, the mounting ear and the mounting plate. Specifically, the limiting structure includes a limiting protrusion provided on the inner side of the pressing plate, a mounting hole is provided on the mounting ear, and a limiting groove is provided on the mounting plate accordingly. The limiting protrusion can pass through the mounting hole and engage into the limiting groove. In this way, when the electrical component is installed, the electrical component is placed in a suitable position on the mounting plate so that the installation The position of the hole is aligned with the position of the limit groove, and the clamping plate in the clamping piece is rotated so that the limit protrusion on the inner side of the clamping plate is aligned with the position of the mounting hole, and then the locking bolt is tightened to make the locking screw drive the clamping plate to move inward, so that the clamping plate presses the mounting ear to the mounting plate. At the same time, the limit protrusion can be engaged into the mounting hole and the limit groove in turn, and the mounting ear is limited by the limit protrusion. In this way, when replacing and installing electrical components, there is no need to unscrew the locking bolt completely, and it only needs to be unscrewed outward a certain distance, which improves the convenience of replacing electrical components and improves replacement efficiency.

[0023] 5. The present invention can avoid the situation where the locking bolts are lost because there is no need to unscrew all the locking bolts, thereby improving the convenience and stability of the electrical components in the low-voltage distribution cabinet during installation and replacement, and improving the installation and replacement efficiency of the electrical components.

[0024] 6. The utility model is provided with a positioning protrusion on the inner side of the mounting ear, and a positioning groove is provided on the mounting plate. When the electrical component is installed, the positioning protrusion on the mounting ear is aligned and engaged with the corresponding positioning groove, so that the electrical component can be accurately positioned when installed on the mounting plate. When the positioning protrusion and the positioning groove are engaged with each other, the mounting hole and the limit groove are aligned with each other, which can further improve the accuracy and convenience of installing the electrical component on the mounting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a quick-change low-voltage distribution cabinet in the utility model;

[0026] Figure 2 This is a schematic cross-sectional view of the overall internal structure of the utility model Figure 1 ;

[0027] Figure 3 This is a schematic cross-sectional view of the overall internal structure of the utility model Figure 2 ;

[0028] Figure 4 This is a schematic diagram of the partial installation structure of the electrical components on the mounting plate in the present invention;

[0029] Figure 5 It is a schematic diagram of the overall structure of the electrical components in the present utility model;

[0030] Figure 6 It is a schematic diagram of the overall structure of the compression plate in the utility model.

[0031] In the figure: 1. Cabinet body; 2. Mounting plate; 3. First terminal group; 4. Back plate; 5. Second terminal group; 6. Connecting wire; 7. Electrical component; 8. Mounting ear; 9. Pressing piece; 10. Locking bolt; 11. Pressing plate; 12. Limiting protrusion; 13. Mounting hole; 14. Limiting groove; 15. Positioning protrusion; 16. Positioning groove; 17. Connecting groove; 18. Damping gasket; 19. Limiting rail; 20. Sliding seat; 21. Sliding groove; 22. Locking seat; 23. Locking piece; 24. Locking groove; 25. Cabinet door; 26. Protective lock. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0034] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0035] See also Figure 1-6 A quick-replacement low-voltage power distribution cabinet comprises a cabinet body 1, a mounting plate 2 is slidingly provided inside the cabinet body 1, a first terminal group 3 is provided on the mounting plate 2, a back panel 4 is detachably provided on the back of the cabinet body 1, a second terminal group 5 is provided on the back panel 4, a connecting wire 6 is correspondingly provided between the first terminal group 3 and the second terminal group 5, the connecting wire 6 is spring-shaped and retractable, an electrical component 7 is installed on the mounting plate 2, so that when the electrical component 7 is installed, the mounting plate 2 can be pulled outward, thereby increasing the operating space of the low-voltage power distribution cabinet when replacing the internal electrical component 7, improving the convenience of replacing the electrical component 7 inside the low-voltage power distribution cabinet, and improving the replacement efficiency;

[0036] In the utility model, a first terminal group 3 is provided on the mounting plate, and a second terminal group 5 is provided on the back plate 4. The first terminal group 3 and the second terminal group 5 are connected by a connecting wire 6, and the connecting wire 6 is spring-shaped and retractable. In this way, when the mounting plate 2 moves, a retractable space for the connecting wire 6 can be provided to ensure the wiring stability of the electrical component 7. Here, the first terminal group 3 is used to connect to the external power line, and the second terminal group 5 is used to connect to the electrical component 7 installed on the mounting plate 2.

[0037] The utility model is provided with a mounting ear 8 on the electrical component 7, and a clamping piece 9 is provided on the outer side of the mounting ear 8. A locking bolt 10 is provided at the end of the clamping piece 9 away from the mounting ear 8, and the locking bolt 10 is threadedly connected to the mounting plate 2, wherein the clamping piece 9 includes a clamping plate 11, and a limiting structure is provided between the clamping plate 11 and the mounting ear 8 and the mounting plate 2. Specifically, the limiting structure includes a limiting protrusion 12 arranged on the inner side of the clamping plate 11, a mounting hole 13 is cooperated with on the mounting ear 8, and a limiting groove 14 is correspondingly provided on the mounting plate 2, and the limiting protrusion 12 can pass through the mounting hole 13 and engage into the limiting groove 14.

[0038] The locking screw 10 is then tightened to move the locking plate 11 inwards, so that the locking screw drives the locking plate 11 to move inwards, so that the locking plate 11 presses the mounting ear 8 onto the mounting plate 2 and fixes it. At the same time, the limiting protrusion 12 can be sequentially engaged with the mounting hole 13 and the limiting groove 14, and the mounting ear 8 is limited by the limiting protrusion 12. In this way, when replacing and installing the electrical component 7, there is no need to completely unscrew the locking bolt 10, but only to screw it outwards a certain distance, thereby improving the convenience of replacing the electrical component 7 and improving the replacement efficiency.

[0039] Moreover, by adopting the present invention, since there is no need to unscrew all the locking bolts 10, the loss of the locking bolts 10 can be avoided, the convenience and stability of the electrical components 7 in the low-voltage distribution cabinet during installation and replacement are improved, and the installation and replacement efficiency of the electrical components 7 is improved.

[0040] The utility model is provided with a positioning protrusion 15 on the inner side of the mounting ear 8 , and a positioning groove 16 is provided on the mounting plate 2 in coordination therewith.

[0041] Specifically, when the electrical component 7 is installed, the positioning protrusion 15 on the mounting plate 2 is aligned and engaged with the corresponding positioning groove 16, so that the electrical component 7 can be accurately positioned when installed on the mounting plate 2. When the positioning protrusion 15 and the positioning groove 16 are engaged with each other, the mounting hole 13 and the limiting groove 14 are aligned with each other, thereby further improving the accuracy and convenience of the electrical component 7 when installed on the mounting plate 2.

[0042] See also Figures 1-6 As an implementation of the clamping plate 11: a connecting groove 17 is opened on the clamping plate 11, and is sleeved on the bolt column of the locking bolt 10 through the connecting groove 17, and a damping gasket 18 is provided on the inner wall of the connecting groove 17.

[0043] Specifically, the clamping plate 11 can be movably mounted on the bolt column of the locking bolt 10 through the connecting groove 17, so that the clamping plate 11 can produce a rotational displacement relative to the locking bolt 10, so that when the electrical component 7 is installed and disassembled, it is convenient to rotate the clamping plate 11 so that the limiting protrusion 12 can be disengaged from the mounting hole 13, thereby realizing the separation between the mounting ear 8 and the mounting plate 2.

[0044] See also Figures 1-6 As an implementation method of the mounting plate 2: two sets of limiting slide rails 19 are symmetrically arranged at the top and bottom ends of the interior of the cabinet 1, and sliding seats 20 are provided at the top and bottom of the mounting plate 2. The sliding seats 20 are provided with sliding grooves 21 that cooperate with the limiting slide rails 19, and the sliding grooves 21 slide in cooperation with the limiting slide rails 19.

[0045] Specifically, when the mounting plate 2 moves, it can drive the sliding seat 20 to move on the limiting slide rail 19. The sliding fit between the sliding groove 21 and the limiting slide rail 19 can realize the movement limitation of the mounting plate 2, thereby improving the movement stability of the mounting plate 2.

[0046] See also Figures 1-6 As an implementation method of the mounting plate 2: a locking seat 22 is provided at the bottom of the mounting plate 2, a locking member 23 is threadedly provided on the locking seat 22, and a locking groove 24 is provided on the inner bottom wall of the cabinet 1 to cooperate with the locking member 23.

[0047] Specifically, a plurality of locking grooves 24 can be provided on the inner bottom wall of the cabinet 1. When it is moved to a suitable position and the mounting plate 2 needs to be locked and fixed, the locking piece 23 is tightened to make the locking piece 23 move downward on the locking seat 22, so that the bottom end of the locking piece 23 can be engaged into the locking groove 24, thereby realizing the locking and fixation between the mounting plate 2 and the cabinet 1, thereby facilitating the stability of the mounting plate 2 when the electrical component 7 is disassembled, and improving the stability of the electrical component 7 during disassembly, replacement and installation.

[0048] See also Figures 1-6 As an implementation of the cabinet 1: a cabinet door 25 is provided on the front of the cabinet 1, one side of the cabinet door 25 is hinged to the cabinet 1, and a protective lock 26 is provided between the other side and the cabinet 1.

[0049] Specifically, the cabinet door 25 is used to seal and protect the interior space of the cabinet body 1 , and the provision of the protection lock 26 can achieve locking and fixing between the cabinet door 25 and the cabinet body 1 .

[0050] In summary, when the overall equipment is in use:

[0051] Connect the external power line to the first terminal block 3 on the back panel 4, and at the same time, connect the cable of the electrical component 7 to the second terminal block 5. In this way, when repairing or replacing the electrical component 7, it is only necessary to disconnect the cable of the electrical component 7 from the corresponding terminal block in the second terminal block 5, thereby improving the convenience of disassembly and installation after replacement.

[0052] When replacing the electrical components 7 inside the low-voltage distribution cabinet, the mounting plate 2 is pulled outward. When it is moved to a suitable position, the locking piece 23 is tightened, so that the bottom of the locking piece 23 moves downward and engages in the corresponding locking groove 24, thereby locking and fixing the mounting plate 2 relative to the cabinet body 1. In this way, the electrical components 7 can be moved outward by the mounting plate 2, so that the maintenance space becomes larger, thereby improving the convenience of disassembly, replacement and installation of the electrical components 7;

[0053] During disassembly, loosen the locking bolt 10 so that the limiting protrusion 12 on the pressing plate 11 is disengaged from the limiting groove 14 and the mounting hole 13. At this time, the locking bolt 10 is not separated from the mounting plate 2.

[0054] Then, the pressing plate 11 is rotated so that the pressing plate drives the limiting protrusion 12 away from the mounting ear 8, thereby separating the mounting ear 8 from the mounting plate 2;

[0055] After all the mounting ears 8 are separated from the mounting plate 2, the lowered electrical component 7 is moved outward so that the positioning protrusion 15 is away from the positioning groove 16, thereby realizing the rapid removal of the electrical component 7 from the mounting plate 2;

[0056] When replacing, just repeat the above operation in reverse to improve the replacement efficiency of the electrical components 7 in the low-voltage distribution cabinet;

[0057] In the present invention, since the first terminal group 3 and the second terminal group 5 are connected by the connecting wire 6, the connection between the first terminal group 3 and the second terminal group 5 is realized. At the same time, the connecting wire 6 is spring-shaped and retractable. In this way, when the mounting plate 2 moves, the spring-shaped connecting wire 6 can provide a retractable space for the connecting wire 6, thereby ensuring the wiring stability of the electrical component 7 during the movement of the mounting plate 2. The first terminal group 3 is fixed on the back plate 4, and the second terminal group 5 is fixed on the mounting plate 2, which does not affect the connection stability between the first terminal group 3 and the external power line, nor does it affect the connection stability between the second terminal group 5 and the electrical component 7. It can also improve the operational flexibility when replacing the electrical component 7, and improve the convenience and efficiency of replacement.

[0058] In all the solutions mentioned above, the connection between two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which are not listed here one by one. In the above, whenever there is a fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0059] In all the solutions mentioned above, if there is no clear description about the operation of electrical components, they are all controlled by the controller. Since the devices matched with the controller are common devices, their control principles and circuit connections are well-known and mature technologies. Therefore, their electrical connection relationships and specific circuit structures will not be described in detail here.

[0060] In all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are well-known technologies and will not be described in detail in this utility model.

[0061] In all the solutions mentioned above, those involving the connection between solar panels and batteries can be used in conjunction with essential accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and line connections are all well-known and mature technologies. Their electrical connection relationships and specific circuit structures will not be described in detail here.

Claims

1. A quick-change low-voltage distribution cabinet, comprising a cabinet body (1), characterized in that: A mounting plate (2) is slidably provided inside the cabinet (1), a first terminal block (3) is provided on the mounting plate (2), a back plate (4) is detachably provided on the back of the cabinet (1), a second terminal block (5) is provided on the back plate (4), a connecting wire (6) is correspondingly provided between the first terminal block (3) and the second terminal block (5), the connecting wire (6) is spring-shaped and retractable, an electrical component (7) is installed on the mounting plate (2), a mounting ear (8) is provided on the electrical component (7), a pressing piece (9) is provided on the outside of the mounting ear (8), a locking bolt (10) is provided on the end of the pressing piece (9) away from the mounting ear (8), and the locking bolt (10) is threadedly connected to the mounting plate (2).

2. The quick-change low-voltage distribution cabinet according to claim 1, characterized in that: The pressing member (9) includes a pressing plate (11), and a limiting structure is provided between the pressing plate (11), the mounting ear (8), and the mounting plate (2).

3. The quick-change low-voltage distribution cabinet according to claim 2, characterized in that: The limiting structure includes a limiting protrusion (12) arranged on the inner side of the pressing plate (11), a mounting hole (13) is provided on the mounting ear (8), and a limiting groove (14) is correspondingly provided on the mounting plate (2), and the limiting protrusion (12) can pass through the mounting hole (13) and engage into the limiting groove (14).

4. The quick-change low-voltage distribution cabinet according to claim 3, characterized in that: A positioning protrusion (15) is provided on the inner side of the mounting ear (8), and a positioning groove (16) is provided on the mounting plate (2) to match the positioning protrusion (15).

5. The quick-change low-voltage distribution cabinet according to claim 4, characterized in that: The pressing plate (11) is provided with a connecting groove (17) and is sleeved on the bolt column of the locking bolt (10) through the connecting groove (17). A damping gasket (18) is provided on the inner wall of the connecting groove (17).

6. A quick-change low-voltage distribution cabinet according to any one of claims 1 to 5, characterized in that: Two sets of limiting slide rails (19) are symmetrically arranged at the top and bottom of the cabinet (1), and a sliding seat (20) is arranged at the top and bottom of the mounting plate (2). The sliding seat (20) is provided with a sliding groove (21) that cooperates with the limiting slide rail (19), and the sliding groove (21) is slidably matched with the limiting slide rail (19).

7. The quick-change low-voltage distribution cabinet according to claim 6, characterized in that: A locking seat (22) is provided at the bottom of the mounting plate (2), a locking piece (23) is threadedly provided on the locking seat (22), and a locking groove (24) is provided on the inner bottom wall of the cabinet (1) to match the locking piece (23).

8. The quick-change low-voltage distribution cabinet according to claim 1, characterized in that: The front of the cabinet body (1) is provided with a cabinet door (25), one side of the cabinet door (25) is hinged to the cabinet body (1), and a protective lock (26) is provided between the other side and the cabinet body (1).

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