An assembled low-voltage power distribution cabinet

Abstract

The application discloses an assembled low-voltage power distribution cabinet and belongs to the technical field of low-voltage power distribution cabinets. The assembled low-voltage power distribution cabinet comprises a bottom cabinet, a lower cabinet, an upper cabinet and a top cover, the bottom cabinet is fixed to the bottom end of the lower cabinet through a plurality of bolts, the lower cabinet and the upper cabinet are both provided with splicing frames which are connected with each other in a plug-in mode, the bottom cabinet, the lower cabinet, the upper cabinet and the top cover are quickly assembled and disassembled through modular design, the on-site installation time is greatly shortened, transportation is facilitated, daily maintenance and repair are made easy, operation and maintenance efficiency is improved, the upper cabinet body and the lower cabinet body are tightly connected through a mechanical linkage mechanism through the design of anti-falling parts, accidental separation is prevented, the structural stability is enhanced, the built-in cooling fan is combined with the design of the air inlet groove and the air outlet groove, forced convection circulation is formed, heat generated by electrical equipment is effectively removed, good heat dissipation performance ensures that the equipment can still stably operate under high load, the service life is prolonged, and the reliability of the whole system is improved.

Description

Technical Field

[0001] This application relates to the field of low-voltage distribution cabinet technology, and more specifically, to a prefabricated low-voltage distribution cabinet. Background Technology

[0002] As a crucial component in power distribution and control, the performance and reliability of low-voltage distribution cabinets are of paramount importance. Traditional low-voltage distribution cabinets are mostly integrally welded or molded structures, resulting in high transportation costs and time-consuming and labor-intensive installation and handling processes. When internal equipment is damaged, due to the welded structure, repairs or replacements rely on cutting and welding, making them extremely inconvenient. Heat dissipation is also a major concern, as heat easily accumulates inside the cabinet, and prolonged high temperatures accelerate the aging of electrical components, reducing equipment lifespan. Furthermore, for some assembled low-voltage distribution cabinets, the stability of connections between cabinet sections is insufficient, leading to loosening or even separation of the cabinets, posing safety hazards. Therefore, we propose a prefabricated low-voltage distribution cabinet. Utility Model Content

[0003] 1. Technical problems to be solved The purpose of this application is to provide a prefabricated low-voltage distribution cabinet that solves the technical problems of inconvenient transportation, low assembly efficiency, poor heat dissipation, and unstable connection in the background art, and achieves the technical effects of rapid assembly, efficient heat dissipation, stable operation and convenient maintenance of the distribution cabinet.

[0004] 2. Technical Solution This application provides a prefabricated low-voltage distribution cabinet, comprising: a base cabinet, a lower cabinet, an upper cabinet, and a top cover. The base cabinet is fixed to the bottom of the lower cabinet by multiple bolts. Both the lower and upper cabinets are equipped with interlocking assembly frames. The upper cabinet is installed on top of the lower cabinet. The lower and upper cabinets are detachably equipped with three side panels arranged in a concave structure. The front surfaces of both the lower and upper cabinets are hinged and fitted with door seals. Anti-detachment components are installed at the joints of the assembly frames between the lower and upper cabinets to prevent the upper cabinet from detaching from the lower cabinet. The top cover is fixed to the top of the upper cabinet by bolts.

[0005] By adopting the above technical solution, the low-voltage distribution cabinet consists of a base cabinet, a lower cabinet, an upper cabinet, and a top cover. The base cabinet serves as a foundation support and is placed stably on a level ground. The lower cabinet is firmly fixed to the upper part of the base cabinet using multiple bolts. The lower and upper cabinets are the main storage spaces for electrical equipment. Both the lower and upper cabinets have assembly frames inside, and these frames can be assembled and connected to each other. Three side panels can be detachably installed on the exterior of the lower and upper cabinets, and the doors can be installed by hinges. The top cover is installed on the upper part of the upper cabinet using bolts and threads, thus assembling the cabinet. Adopting a modular design concept, each component is produced independently and then quickly assembled on-site, greatly improving production efficiency and reducing transportation costs. Furthermore, the assembly frames between the lower and upper cabinets are reinforced with anti-detachment components, making installation more convenient and efficient.

[0006] Optionally, a U-shaped plate is fixedly provided at the bottom of the lower cabinet, and the U-shaped plate is connected to the lower cabinet by multiple bolts. A dust filter plate is slidably inserted into the U-shaped plate.

[0007] By adopting the above technical solution, the air drawn from the outside by the cooling fan must be filtered by a dust filter plate before entering the lower cabinet to prevent dust from entering the cabinet and affecting the normal operation of the electrical equipment.

[0008] Optionally, a cooling fan is fixedly installed inside the base cabinet with screws, and multiple air inlet slots are opened on both sides of the base cabinet, and multiple exhaust slots are opened on the front and rear sides of the top cover.

[0009] By adopting the above technical solution, by installing a cooling fan inside the cabinet, air can be drawn from the outside to ventilate and cool the electrical equipment inside the cabinet, and the hot air inside the cabinet can be discharged through the exhaust slot on the top cover.

[0010] Optionally, the assembly frame includes risers, with a riser installed at each of the four corners of the lower and upper cabinets. The risers have multiple elliptical cable trays. Insert pipes are inserted between the risers of the lower and upper cabinets, and the upper ends of the insert pipes are fixed to the corresponding risers in the upper cabinet by bolt threads. I-shaped cable tray frames are fixedly connected between the four risers of the lower and upper cabinets. The I-shaped cable tray frames are used for limiting the installation of low-voltage electrical equipment.

[0011] By adopting the above technical solution, both the lower and upper cabinets are equipped with rectangular frame assembly frames. Each assembly frame is composed of four uprights and two I-shaped wire trough frames that are fixedly connected. The assembly frames can be connected by inserting tubes, which facilitates the assembly work.

[0012] Optionally, the surface of the riser near the side plate is provided with an L-shaped slot, and an L-shaped insertion strip is fixedly provided on the inner wall of the side plate at both ends. The L-shaped insertion strip is slidably inserted into the corresponding L-shaped slot. Two screw blocks are fixedly provided on the inner wall of the side plate. The screw blocks are threadedly connected to an I-shaped wire groove frame by bolts.

[0013] By adopting the above technical solution, two L-shaped plug strips are fixedly provided on each side plate, which can be slidably plugged in and installed along the L-shaped slots opened on the two risers. Two screw blocks are fixed on the inner wall of the side plate, which can be threadedly connected to the I-shaped wire trough frame with bolts, which facilitates the disassembly and assembly of the side plate.

[0014] Optionally, the anti-detachment component includes a pressure rod and a support base. The pressure rod is fixedly installed at the bottom end of the riser inside the lower cabinet, and the support base is fixedly installed at the top end of the riser inside the upper cabinet. A J-shaped hook is rotatably mounted on the support base via a shaft. The bottom end of the pressure rod abuts against one end of the J-shaped hook. A first spring is fixedly connected between the J-shaped hook and the support base. Two limiting blocks are slidably inserted into the upper ends of the left and right side panels in the lower cabinet, and each limiting block is located at a J-shaped hook. The limiting block has a T-shaped structure and an inclined end. A second spring is fixedly connected between the limiting block and the corresponding side panel.

[0015] By adopting the above technical solution, during the docking process between the upper cabinet and the lower cabinet, the insertion tube at the bottom of the riser in the upper cabinet is inserted into the upper end of the riser in the lower cabinet. The pressure rod moves downward with the upper cabinet, which will push the J-shaped hook to rotate around the axis. The bottom end of the J-shaped hook will press the limiting block to move along the corresponding side plate, causing the second spring to compress and deform elastically. When the insertion tube is inserted into place, the anti-disengagement hook at the upper end of the J-shaped hook will be engaged at the upper end of the pressure rod. The bottom end of the J-shaped hook moves beyond the limiting block. Under the action of the second spring, the limiting block quickly resets and is limited to the upper part of the bottom end of the J-shaped hook, preventing the J-shaped hook from rotating and resetting. This maintains the limiting function of the J-shaped hook on the pressure rod, achieving a stable connection and anti-disengagement of the upper and lower cabinets.

[0016] 3. Beneficial effects One or more technical solutions provided in this application have at least the following technical effects or advantages: 1. By adopting a modular design, the base cabinet, lower cabinet, upper cabinet and top cover can be quickly assembled and disassembled, which greatly shortens the on-site installation time. It not only facilitates transportation, but also makes daily maintenance and repair easy and simple, and improves operation and maintenance efficiency. 2. The anti-detachment design utilizes a mechanical linkage mechanism to ensure a tight connection between the upper and lower cabinets, preventing accidental separation and enhancing structural stability; 3. The built-in cooling fan, combined with the design of the air intake and exhaust slots, forms a forced convection circulation, effectively removing the heat generated by the electrical equipment. The excellent heat dissipation performance ensures that the equipment can maintain stable operation under high loads, extending its service life and improving the overall system reliability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a prefabricated low-voltage distribution cabinet disclosed in a preferred embodiment of this application; Figure 2 This is an exploded view of the overall structure of a prefabricated low-voltage distribution cabinet disclosed in a preferred embodiment of this application; Figure 3 This is a schematic diagram of the assembly frame and anti-detachment component structure of a prefabricated low-voltage distribution cabinet disclosed in a preferred embodiment of this application; Figure 4 This application discloses a prefabricated low-voltage distribution cabinet according to a preferred embodiment. Figure 3 Enlarged structural diagram at point A in the middle; The following are the labeling instructions in the diagram: 1. Base cabinet; 11. Cooling fan; 12. Air intake slot; 2. Lower cabinet; 21. U-shaped plate; 22. Dust filter plate; 3. Upper cabinet; 31. Side panel; 311. L-shaped connector; 312. Screw block; 32. Sealing door; 4. Top cover; 41. Exhaust duct; 5. Assembly frame; 51. Riser; 511. L-shaped slot; 512. Oval cable tray; 52. I-shaped cable tray frame; 54. Insert pipe; 6. Anti-detachment component; 61. Pressure bar; 62. J-shaped hook; 63. First spring; 64. Support base; 65. Limiting block; 66. Second spring. Detailed Implementation

[0018] The present application will be further described in detail below with reference to the accompanying drawings. Reference Figures 1 to 4This application provides a prefabricated low-voltage distribution cabinet, comprising: a base cabinet 1, a lower cabinet 2, an upper cabinet 3, and a top cover 4. The base cabinet 1 is fixed to the bottom of the lower cabinet 2 by multiple bolts. Both the lower cabinet 2 and the upper cabinet 3 are equipped with interlocking assembly frames 5, and the upper cabinet 3 is installed at the upper end of the lower cabinet 2. The lower cabinet 2 and the upper cabinet 3 are detachably equipped with three side panels 31 arranged in a concave structure. The front surfaces of both the lower cabinet 2 and the upper cabinet 3 are hinged and fitted with door seals 32. Anti-detachment parts 6 are installed at the joints of the assembly frames 5 between the lower cabinet 2 and the upper cabinet 3 to prevent the upper cabinet 3 from detaching from the lower cabinet 2. The top cover 4 is fixed to the upper end of the upper cabinet 3 by bolts. This low-voltage distribution cabinet is composed of a base cabinet 1, a lower cabinet 2, an upper cabinet 3, and a top cover 4. Cabinet 1 serves as a stable base support, placed on a level surface. Multiple bolts securely fasten the lower cabinet 2 to the top of cabinet 1. Cabinets 2 and 3 form the main storage space for electrical equipment. Both cabinets 2 and 3 contain assembly frames 5, which can be interconnected. Three detachable side panels 31 are installed on the exterior of cabinets 2 and 3, and hinged doors 32 are installed. A top cover 4 is bolted to the top of cabinet 3, facilitating cabinet assembly. Adopting a modular design, each component is manufactured independently and quickly assembled on-site, significantly improving production efficiency and reducing transportation costs. Furthermore, the assembly frames 5 between cabinets 2 and 3 are reinforced with anti-detachment components 6, making installation more convenient and efficient.

[0019] Reference Figure 2 and Figure 3 The bottom of the lower cabinet 2 is fixedly provided with a U-shaped plate 21. The U-shaped plate 21 is connected to the lower cabinet 1 by multiple bolts. A dust filter plate 22 is slidably inserted into the U-shaped plate 21. Before the air drawn in by the cooling fan 11 enters the lower cabinet 2, it needs to be filtered by the dust filter plate 22 to prevent dust from entering the cabinet and affecting the normal operation of the electrical equipment.

[0020] Reference Figure 1 and Figure 2 The base cabinet 1 is equipped with a cooling fan 11 fixed inside by screws. Multiple air inlet slots 12 are provided on both sides of the base cabinet 1, and multiple exhaust slots 41 are provided on the front and rear sides of the top cover 4. By installing the cooling fan 11 inside the base cabinet 1, air can be drawn from the outside to ventilate and dissipate heat for the electrical equipment inside the cabinet, and the hot air inside the cabinet can be discharged through the exhaust slots 41 of the top cover 4.

[0021] Reference Figure 3 and Figure 4The assembly frame 5 includes a riser 51. A riser 51 is set at each of the four corners of the lower cabinet 2 and the upper cabinet 3. Multiple elliptical wire grooves 512 are opened on the riser 51. Insert pipes 54 are inserted between the risers 51 between the lower cabinet 2 and the upper cabinet 3. The upper end of the insert pipe 54 is fixed to the corresponding riser 51 in the upper cabinet 3 by bolt thread. I-shaped wire groove frames 52 are fixedly connected between the four risers 51 between the lower cabinet 2 and the upper cabinet 3. The I-shaped wire groove frames 52 are used to limit the installation of low voltage power equipment. The lower cabinet 2 and the upper cabinet 3 are equipped with a rectangular frame structure assembly frame 5. Each assembly frame 5 is composed of four risers 51 and two I-shaped wire groove frames 52 fixedly connected. The assembly frames 5 can be connected by insert pipes 54, which facilitates the assembly work.

[0022] Reference Figure 3 and Figure 4 Each riser 51 has an L-shaped slot 511 on its surface near the side plate 31. An L-shaped insertion strip 311 is fixed to the inner wall of the side plate 31 at both ends. The L-shaped insertion strip 311 slides into the corresponding L-shaped slot 511. Two screw blocks 312 are fixed to the inner wall of the side plate 31. The screw blocks 312 are threadedly connected to an I-shaped wire trough frame 52 by bolts. Each side plate 31 has two L-shaped insertion strips 311 fixed on it, allowing for sliding insertion along the L-shaped slots 511 on the two risers 51. The two screw blocks 312 fixed to the inner wall of the side plate 31 allow for threaded connection with the I-shaped wire trough frame 52 using bolts, facilitating the assembly and disassembly of the side plate 31.

[0023] Reference Figure 3 and Figure 4The anti-detachment component 6 includes a pressure rod 61 and a support base 64. The pressure rod 61 is fixedly installed at the bottom end of the riser 51 inside the lower cabinet 2, and the support base 64 is fixedly installed at the upper end of the riser 51 inside the upper cabinet 3. A J-shaped hook 62 is rotatably mounted on the support base 64 via a shaft. The bottom end of the pressure rod 61 abuts against one end of the J-shaped hook 62. A first spring 63 is fixedly connected between the J-shaped hook 62 and the support base 64. Two limiting blocks 65 are slidably inserted into the upper ends of the side panels 31 on both the left and right sides of the lower cabinet 2, and each limiting block 65 is located at a J-shaped hook 62. The limiting blocks 65 have a T-shaped structure and a beveled end. A second spring 66 is fixedly connected between the limiting blocks 65 and the corresponding side panels 31. When the upper cabinet 3 is docked with the lower cabinet 2, the riser 51 in the upper cabinet 3... The insertion tube 54 at the bottom of tube 51 is inserted into the upper end of the riser tube 51 in the lower cabinet 2. The pressure rod 61 moves downward together with the upper cabinet 3, which will push the J-shaped hook 62 to rotate around the axis. The bottom end of the J-shaped hook 62 will press the limiting block 65 to move along the corresponding side plate 31, causing the second spring 66 to compress and deform elastically. When the insertion tube 54 is inserted into place, the anti-disengagement hook at the upper end of the J-shaped hook 62 will be engaged at the upper end of the pressure rod 61. The bottom end of the J-shaped hook 62 moves beyond the limiting block 65. Under the action of the second spring 66, the limiting block 65 quickly resets and is limited to the upper part of the bottom end of the J-shaped hook 62, preventing the J-shaped hook 62 from rotating and resetting. This maintains the limiting function of the J-shaped hook 62 on the pressure rod 61, achieving a stable connection and anti-disengagement purpose between the upper cabinet 3 and the lower cabinet 2.

[0024] Working principle: Place the base cabinet 1 on a horizontal surface. Use multiple bolts to fix the U-shaped plate 21 at the bottom of the lower cabinet 2 to the upper part of the base cabinet 1. When assembling the lower cabinet 2 and the upper cabinet 3, a square frame structure is formed by connecting the I-shaped cable tray frame 52 between the four risers 51. Insert the three side plates 31 into the L-shaped slots 511 of the corresponding risers 51 in sequence through L-shaped insert strips 311, and use bolts 312 to fix them to the I-shaped cable tray frame 52 with threads. Finally, install the door 32 by rotating the hinge. When assembling the lower cabinet 2 and the upper cabinet 3, insert tubes 54 installed at the bottom of the risers 51 in the upper cabinet 3 are inserted into the corresponding risers 51 in the lower cabinet 2. During the docking of the upper cabinet 3 and the lower cabinet 2, the pressure rod 61 will push the J-shaped hook 62 to rotate around the axis, and the first spring 63 will be compressed and stored. The J-shaped hook 62 presses the limiting block 65 to move, causing the second spring 66 to compress and deform elastically. When the upper cabinet 3 and the lower cabinet 2 are connected in place, the anti-disengagement hook at the upper end of the J-shaped hook 62 will be engaged at the upper end of the pressure rod 61, while the bottom end of the J-shaped hook 62 moves beyond the limiting block 65. Under the reset action of the second spring 66, the limiting block 65 can quickly reset and be limited to the J-shaped hook 62, preventing the J-shaped hook 62 from rotating and resetting. This achieves the purpose of stable connection and anti-disengagement between the upper cabinet 3 and the lower cabinet 2. Then, the top cover 4 is installed on the upper end of the upper cabinet 3 using bolt threads. The cooling fan 11 is installed inside the bottom cabinet 1, and air inlet slots 12 are opened on both sides of the bottom cabinet 1. Exhaust slots 41 are opened on the front and rear sides of the top cover 4. A dust filter plate 22 is inserted into the U-shaped plate 21, thereby achieving the purpose of ventilation and heat dissipation inside the cabinet.

Claims

1. A prefabricated low-voltage distribution cabinet, characterized in that: It includes: a base cabinet (1), a lower cabinet (2), an upper cabinet (3), and a top cover (4). The base cabinet (1) is fixed to the bottom of the lower cabinet (2) by multiple bolts. The lower cabinet (2) and the upper cabinet (3) are both equipped with interlocking assembly frames (5). The upper cabinet (3) is installed at the top of the lower cabinet (2). The lower cabinet (2) and the upper cabinet (3) are detachably equipped with three side panels (31) with a concave structure. The front surfaces of the lower cabinet (2) and the upper cabinet (3) are both equipped with hinged doors (32). The connection between the assembly frames (5) of the lower cabinet (2) and the upper cabinet (3) is equipped with anti-detachment parts (6) to prevent the upper cabinet (3) from detaching from the lower cabinet (2). The top cover (4) is fixed to the top of the upper cabinet (3) by bolts.

2. The prefabricated low-voltage distribution cabinet according to claim 1, characterized in that: The bottom of the lower cabinet (2) is fixedly provided with a U-shaped plate (21), which is connected to the lower cabinet (1) by multiple bolts. A dust filter plate (22) is slidably inserted into the U-shaped plate (21).

3. The prefabricated low-voltage distribution cabinet according to claim 1, characterized in that: The cabinet (1) is fitted with a cooling fan (11) inside by screws. Multiple air inlet slots (12) are provided on both sides of the cabinet (1). Multiple exhaust slots (41) are provided on the front and rear sides of the top cover (4).

4. The prefabricated low-voltage distribution cabinet according to claim 1, characterized in that: The assembly frame (5) includes a riser (51). A riser (51) is provided at each of the four corners of the lower cabinet (2) and the upper cabinet (3). Multiple elliptical wire grooves (512) are provided on the riser (51). Insert pipes (54) are inserted between the risers (51) between the lower cabinet (2) and the upper cabinet (3). The upper end of the insert pipe (54) is fixed to the riser (51) in the upper cabinet (3) by bolt thread. I-shaped wire groove frame (52) is fixedly connected between the four risers (51) between the lower cabinet (2) and the upper cabinet (3). The I-shaped wire groove frame (52) is used to limit the installation of low-voltage power equipment.

5. A prefabricated low-voltage distribution cabinet according to claim 4, characterized in that: The riser (51) has an L-shaped slot (511) on the surface near the side plate (31). The inner wall of the side plate (31) is fixed with an L-shaped plug strip (311) at both ends. The L-shaped plug strip (311) is slidably inserted into the corresponding L-shaped slot (511). The inner wall of the side plate (31) is fixed with two screw blocks (312). The screw blocks (312) are threadedly connected to an I-shaped wire groove frame (52) by bolts.

6. A prefabricated low-voltage distribution cabinet according to claim 4, characterized in that: The anti-detachment component (6) includes a pressure rod (61) and a support base (64). The pressure rod (61) is fixedly installed at the bottom end of the riser (51) inside the lower cabinet (2). The support base (64) is fixedly installed at the upper end of the riser (51) inside the upper cabinet (3). A J-shaped hook (62) is rotatably installed on the support base (64) via a shaft. The bottom end of the pressure rod (61) abuts against one end of the J-shaped hook (62). A first spring (63) is fixedly connected between the J-shaped hook (62) and the support base (64). Two limiting blocks (65) are slidably inserted into the upper ends of the side panels (31) on the left and right sides of the lower cabinet (2). The limiting blocks (65) are respectively located at a J-shaped hook (62). The limiting blocks (65) have a T-shaped structure and the end is a beveled structure. A second spring (66) is fixedly connected between the limiting blocks (65) and the corresponding side panels (31).

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