A low-voltage power distribution cabinet with a three-dimensional bus bridge arranged in the cabinet body and a use method thereof

Abstract

The application belongs to the field of low-voltage power distribution cabinets, and particularly relates to a low-voltage power distribution cabinet with a three-dimensional bus bridge arranged in the cabinet body and a use method. In the existing traditional low-voltage power distribution cabinet, the installation and wiring operation of the bus duct are often relatively complicated, the safety is relatively low, the installation mode of the electrical device is often not flexible enough, and the operation space is limited. The present application provides the following scheme, which comprises a power distribution cabinet body, a bus duct is fixedly embedded at the top of the power distribution cabinet body, a bus bridge plate is fixedly installed at the top of the power distribution cabinet body, and a mounting frame with a mounting hole is installed on one side of the bus bridge plate; a fixed partition plate is vertically fixed to the inner wall of the power distribution cabinet body. In the application, the design of the protection plate effectively prevents accidental contact with the wiring and ensures the safety of the wiring operation inside the power distribution cabinet. The special interference design of the protection plate and the power distribution cabinet body and the braking effect of the side baffle jointly construct a multiple safety protection mechanism.

Description

Technical Field

[0001] This invention relates to the field of low-voltage distribution cabinet technology, and in particular to a low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet and its usage method. Background Technology

[0002] In traditional low-voltage distribution cabinets, the installation and wiring of busbar trunking are often cumbersome and have low safety. Due to the lack of effective protective measures, accidental contact is a potential safety hazard during wiring. Furthermore, the installation methods for electrical components in traditional distribution cabinets are often inflexible, with limited operating space, making it difficult to meet the demands of modern electrical systems for efficiency, safety, and convenience.

[0003] In addition, traditional distribution cabinets also have certain shortcomings in terms of space utilization and structural stability. An inefficient spatial layout results in a large cabinet size without fully utilizing its internal space; insufficient structural stability may affect the cabinet's load-bearing capacity and service life.

[0004] Therefore, it is necessary to design a new type of low-voltage distribution cabinet to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing low-voltage distribution cabinets, where the installation and wiring of busbar trunking are often cumbersome and lack safety. Due to the lack of effective protective measures, accidental contact during wiring is a common safety hazard. Furthermore, the installation methods for electrical components in traditional distribution cabinets are often inflexible, with limited operating space, making it difficult to meet the demands of modern electrical systems for efficiency, safety, and convenience. In addition, traditional distribution cabinets also have shortcomings in space utilization and structural stability. Inadequate spatial layout results in bulky cabinets that fail to fully utilize internal space; insufficient structural stability can affect the load-bearing capacity and service life of the cabinet. Therefore, this invention proposes a low-voltage distribution cabinet with a three-dimensional busbar trunking system and its usage method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet includes a distribution cabinet body, a busbar groove is fixedly embedded in the top of the distribution cabinet body, a busbar cable tray plate is fixedly installed in the top of the distribution cabinet body, and a mounting bracket with mounting holes is installed on one side of the busbar cable tray plate.

[0008] A fixed partition is vertically fixed to the inner wall of the main body of the power distribution cabinet, dividing the space inside the cabinet into upper and lower areas. The busbar trunking is located in the area above the fixed partition.

[0009] The protective assembly includes a second rotating shaft that is slidably engaged in an elliptical groove within the fixed partition, the second rotating shaft being fixedly connected to a mounting vertical plate, and a protective plate being fixedly mounted on the top of the mounting vertical plate;

[0010] The mounting assembly includes two bottom mounting strips symmetrically fixed to the bottom of the main body of the power distribution cabinet. The bottom mounting strips are slidably connected to upper limit plates, and the two upper limit plates together fix the mounting plate.

[0011] The protective plate covers the busbar wiring area when closed, and the mounting plate achieves lateral positioning by inserting a pin into the second pin hole of the bottom mounting strip and the first pin hole of the upper limit plate.

[0012] In one possible design, a protective cover is detachably installed on one side of the busbar tray, and a cabinet door is hinged to the open side of the main body of the distribution cabinet, the cabinet door being provided with ventilation holes and a door handle.

[0013] In one possible design, the protective component further includes:

[0014] A first rectangular groove is formed in the fixed partition, a first strip hole is formed at the bottom of the first rectangular groove, a second rectangular groove is formed on one side of the inner wall of the first rectangular groove, the bottom of the second rectangular groove is connected to the first strip hole, and a second strip hole is formed on one side of the inner wall of the second rectangular groove.

[0015] The side baffle slides through the first strip hole, with one end abutting against the mounting vertical plate and the other end connected to the inner wall of the first rectangular groove via a tension spring. A toggle groove is provided on one side of the bottom of the side baffle to facilitate the reset of the side baffle.

[0016] A fixed outer rod is vertically fixed to the top of an elliptical groove, and a third rectangular vertical hole is opened at its bottom. A strip-shaped vertical hole is opened in the upper half of the fixed outer rod, and the top of the third rectangular vertical hole is connected to the bottom of the strip-shaped vertical hole.

[0017] In one possible design, the side baffle is fixedly connected to a strip slide plate, and the strip slide plate has a first rectangular vertical hole.

[0018] The inner rod slides through the third rectangular vertical hole, and a horizontal plate is fixed at its top. A compression spring is provided between the horizontal plate and the inner top wall of the fixed outer rod.

[0019] When the inner rod engages with the first rectangular vertical hole, the side baffle locks the vertical plate in place.

[0020] In one possible design, the second rotating shaft has a second rectangular vertical hole, through which the fixed outer rod slides.

[0021] When the protective plate moves upward, the outer rod is fixed and inserted into the second rectangular vertical hole and the spring is compressed, causing the inner rod to disengage from the first rectangular vertical hole.

[0022] In one possible design, the mounting components further include:

[0023] Fixed rectangular plates are symmetrically fixed on both sides of the mounting plate;

[0024] The side mounting strip is fixed to the inner wall of the main body of the distribution cabinet, and the fixed rectangular plate is fixed to the side mounting strip by screws.

[0025] In one possible design, the two upper limit plates are fixedly connected by fastening screws that pass through threaded holes;

[0026] After loosening the fastening screws and the screws fixing the rectangular plate, the mounting plate can be slid laterally along the bottom mounting strip to adjust its position.

[0027] One possible design also includes:

[0028] The braking assembly includes a first rotating shaft that rotates through a fixed partition, with a limiting block fixed at one end and an operating plate fixed at the other end.

[0029] When the limiting block rotates to the vertical position, it abuts against the side wall of the mounting plate, restricting its movement.

[0030] The operating procedures for low-voltage distribution cabinets include:

[0031] S1. Steps to open the protective plate: Move the protective plate vertically upwards so that the fixed outer rod is inserted into the second rectangular vertical hole, the inner rod is disengaged from the first rectangular vertical hole, and the side baffle moves laterally into the second rectangular groove under the action of the tension spring; move the second rotating shaft downwards to disengage from the fixed outer rod, and rotate to open the protective plate.

[0032] S2. Adjustment steps for the mounting plate: Rotate the operating plate to make the limit block horizontal, remove the screws and fastening screws of the fixed rectangular plate, slide the mounting plate horizontally to the target position, insert the pin to lock, and then tighten the screws.

[0033] In this application, during use, the busbar trunking is fixedly installed on the top of the main body of the distribution cabinet. The internal space of the main body of the distribution cabinet is divided into upper and lower spaces by a fixed partition. At this time, the wiring operation can be completed through the busbar trunking. After the wiring is completed, in order to ensure that the wiring will not be accidentally touched, the device can be protected by a protective plate to ensure the safety of the wiring.

[0034] When it is necessary to change the wiring, the top of the protective plate is in contact with the inner wall of one side of the main body of the distribution cabinet and cannot be opened directly. It is necessary to know how to open the protective plate in order to open it. The specific operation is to move the protective plate vertically upward. The protective plate drives the mounting plate to move upward. The mounting plate drives the second rotating shafts on both sides to move upward. The second rotating shafts move upward at the middle position of the elliptical groove. The second rotating shafts move to the top inner wall of the elliptical groove.

[0035] At this time, the second rotating shaft is slidably sleeved on the outside of the fixed outer rod through the second rectangular vertical hole. The second rotating shaft moves upward, which drives the horizontal plate to move upward. The horizontal plate drives the inner rod to move upward. The horizontal plate squeezes the compression spring, and the bottom of the inner rod moves out from the inside of the first rectangular vertical hole, thereby releasing the braking state of the strip slide plate. At this time, the side baffle can move laterally under the tension of the tension spring. At this time, the side baffle moves away from the side where the vertical plate is installed and moves through the inside of the first strip hole to the inside of the second rectangular groove, no longer resisting the installation of the vertical plate.

[0036] Next, move the second rotating shaft down as a whole. The second rotating shaft moves down along the fixed outer rod. When the second rotating shaft moves to the lowest point, the second rotating shaft separates from the fixed outer rod. At this time, the top of the protective plate no longer abuts against the inner wall of one side of the main body of the distribution cabinet. The protective plate can be rotated as a whole, and one side of the protective plate can be opened to adjust the internal wiring.

[0037] Electrical components are installed on one side of the mounting plate, and the wiring is routed through the space between the back of the mounting plate and the inner wall of the main body of the distribution cabinet. When it is necessary to connect the wires on the mounting plate, the operating plate can be rotated. The operating plate drives the first rotating shaft to rotate, and the first rotating shaft drives the limit block to rotate. At this time, the limit block rotates to a horizontal state and no longer resists the mounting plate. At this time, the screws on the fixed rectangular plate can be removed, and the braking state of the mounting plate can be released.

[0038] At this point, the mounting plate can drive the two upper limit plates to move laterally. The upper limit plates slide on the bottom mounting strip to ensure the stability of the mounting plate's movement. After inserting the pin into the second pin hole and the first pin hole, the upper limit plates can be limited to a suitable position on the bottom mounting strip. The fastening screws can fix the two upper limit plates together, thereby allowing the mounting plate to be adjusted back and forth to increase the operating space.

[0039] Beneficial effects:

[0040] The protective panel design effectively prevents accidental wiring and ensures the safety of wiring operations inside the distribution cabinet. The special contact design between the protective panel and the main body of the distribution cabinet, along with the braking effect of the side baffles, together form a multi-layered safety protection mechanism.

[0041] The protective panel can be easily opened by simply moving it vertically upwards and rotating it, greatly simplifying wiring and adjustment operations. At the same time, the forward and backward adjustment function of the mounting plate enhances operational flexibility, making the installation and wiring of electrical components more convenient.

[0042] The design of the mounting components allows for rear-mounted adjustment of electrical components, making full use of the internal space of the distribution cabinet and improving operational space. Furthermore, the design of the busbar tray and mounting brackets optimizes the spatial layout, resulting in a more compact and rational overall structure for the distribution cabinet.

[0043] Through the interlocking and limiting design of multiple components, such as the interlocking of the second rotating shaft with the elliptical groove and the engagement of the inner rod with the first rectangular vertical hole, the stability of the distribution cabinet structure is ensured. This design not only improves the load-bearing capacity of the distribution cabinet but also extends its service life. Attached Figure Description

[0044] Figure 1 This is a three-dimensional structural diagram of a low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet, as proposed in this invention.

[0045] Figure 2 This is a two-dimensional structural diagram of a low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet, as proposed in this invention, from a second perspective.

[0046] Figure 3 This is a three-dimensional structural diagram of a low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet, as proposed in this invention, when unfolded.

[0047] Figure 4 This is an exploded view of the busbar tray plate and protective cover in a low-voltage distribution cabinet with a three-dimensional busbar tray installed inside the cabinet, as proposed in this invention.

[0048] Figure 5 This is a three-dimensional structural diagram of the protective plate of a low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet, as proposed in this invention, when the plate is unfolded.

[0049] Figure 6 This is a three-dimensional structural diagram of the bottom mounting strip and mounting plate in a low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet, as proposed in this invention.

[0050] Figure 7 This is an exploded view of the bottom mounting strip and mounting plate in a low-voltage distribution cabinet with a three-dimensional busbar cable tray inside the cabinet, as proposed in this invention.

[0051] Figure 8 This is an exploded view of the protective plate and fixed partition in a low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet, as proposed in this invention.

[0052] Figure 9This is a three-dimensional structural diagram of a fixed partition and a first rectangular groove in a low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet, as proposed in this invention.

[0053] Figure 10 This is an exploded view of a low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet, as proposed in this invention.

[0054] In the diagram: 1. Main body of the distribution cabinet; 2. Busbar tray plate; 3. Mounting bracket; 4. Ventilation hole; 5. Protective cover; 6. Cabinet door; 7. Door handle; 8. Busbar trough; 9. Protective plate; 10. Side mounting strip; 11. Mounting hole; 12. Fixed partition; 13. Bottom mounting strip; 14. Mounting plate; 15. Upper limit plate; 16. Fixed rectangular plate; 17. First pin hole; 18. Threaded hole; 19. Second pin hole; 20. Pin shaft; 21. Fastening screw; 22. Mounting vertical plate; 23. Side 24. Side baffle; 25. First rectangular groove; 26. Operating panel; 27. First rotating shaft; 28. Limiting block; 29. ​​Second strip hole; 30. Elliptical groove; 31. First strip hole; 32. Second rectangular groove; 33. Second rotating shaft; 34. Strip vertical hole; 35. First rectangular vertical hole; 36. Actuating groove; 37. Tension spring; 38. Strip sliding plate; 39. Inner rod; 40. Horizontal plate; 41. Fixed outer rod; 42. Compression spring; 43. Third rectangular vertical hole; 44. Second rectangular vertical hole. Detailed Implementation

[0055] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0056] In one embodiment: Refer to Figure 1-10 The specific implementation method of a power distribution cabinet is as follows:

[0057] The low-voltage distribution cabinet body 1 has an open design on one side with a hinged door 6. The door 6 is equipped with a door handle 7 and multiple ventilation holes 4. A busbar trunking 8 is fixedly embedded on one side of the top of the distribution cabinet body 1, and a busbar cable tray plate 2 is fixedly installed on the top. One side of the busbar cable tray plate 2 is connected to the wall through multiple mounting brackets 3 with mounting holes 11, and a protective cover 5 can be detachably installed on the other side. A fixed partition 12 is fixedly installed on the inner wall of one side of the distribution cabinet body 1, dividing the cabinet space into upper and lower parts. A mounting assembly for installing electrical components is set below the fixed partition 12.

[0058] The mounting assembly includes two symmetrical bottom mounting strips 13 fixed to the inner bottom wall of the main body 1 of the distribution cabinet. Each bottom mounting strip 13 has upper limit plates 15 on both its upper and lower sides. A mounting plate 14 is fixedly connected to one side of the two upper limit plates 15. Fixed rectangular plates 16 are fixedly mounted on both sides of the mounting plate 14. The fixed rectangular plates 16 are fixedly connected to the side mounting strips 10 on the inner wall of the main body 1 of the distribution cabinet by screws. Multiple second pin holes 19 are opened at the top of the bottom mounting strips 13. First pin holes 17 are opened inside the upper limit plates 15. Pins 20 are inserted into the first pin holes 17 and the second pin holes 19 for lateral positioning. The two upper limit plates 15 are longitudinally fixed by fastening screws 21 passing through threaded holes 18.

[0059] A first rectangular groove 24 is formed on the top of one side of the fixed partition 12, and a protective component is installed inside. The protective component includes two elliptical grooves 29 formed on the inner walls of both sides of the mounting plate 14. A second rotating shaft 32 is movably engaged in the elliptical grooves 29. A mounting vertical plate 22 is fixedly connected between the two second rotating shafts 32, and a protective plate 9 is fixedly installed on the top of the mounting vertical plate 22. A first strip hole 30 is formed on the bottom inner wall of the first rectangular groove 24, and a second rectangular groove 31 is formed on one side inner wall. The bottom of the second rectangular groove 31 communicates with the first strip hole 30, and a second strip hole 28 extending to the elliptical groove 29 is formed on the other side inner wall. A side baffle 23 slides through the first strip hole 30 and the second rectangular groove 31. One side of the side baffle 23 abuts against the mounting vertical plate 22, and a tension spring 36 is provided between the other side and the inner wall of the second rectangular groove 31. A strip-shaped sliding plate 37 is fixed to one side of the side baffle 23. The strip-shaped sliding plate 37 is engaged in the second strip-shaped hole 28 and has a first rectangular vertical hole 34. A toggle groove 35 is provided at the bottom of the side baffle 23.

[0060] The second rotating shaft 32 has a second rectangular vertical hole 43 inside. An outer rod 40 is fixedly installed on the inner wall of the top of the elliptical groove 29. A strip-shaped vertical hole 33 is formed in the upper half of the outer rod 40, and a third rectangular vertical hole 42 is formed at the bottom. An inner rod 38 slides through the third rectangular vertical hole 42. A horizontal plate 39 is fixed to the top of the inner rod 38, and a compression spring 41 is installed between the top of the horizontal plate 39 and the inner wall of the top of the strip-shaped vertical hole 33. The outer rod 40 engages with the second rectangular vertical hole 43, and the inner rod 38 engages with the first rectangular vertical hole 34 to achieve braking.

[0061] When wiring is required, the busbar 8 is fixedly installed on the top of the main body 1 of the distribution cabinet. After the space is divided by the fixed partition 12, the wiring operation is completed. After the wiring is completed, the protective plate 9 is kept in contact with the inner wall of the main body 1 of the distribution cabinet through the connection between the mounting vertical plate 22 and the second rotating shaft 32. The side baffle 23 is kept in contact with the mounting vertical plate 22 under the action of the tension spring 36, so as to achieve the protective function.

[0062] When wiring needs to be changed, the vertically upward-moving protective plate 9 moves the mounting vertical plate 22 and the second rotating shaft 32 upward. When the second rotating shaft 32 moves along the elliptical groove 29 to the top inner wall, the fixed outer rod 40 engages with the second rectangular vertical hole 43. The inner rod 38 moves upward under the action of the compression spring 41 and disengages from the first rectangular vertical hole 34, releasing the brake on the strip slide 37. The side baffle 23 moves laterally under the action of the tension spring 36, moves away from the side of the mounting vertical plate 22 and enters the second rectangular groove 31, releasing the contact with the mounting vertical plate 22. Then, the second rotating shaft 32 is moved down to the lowest point to disengage it from the fixed outer rod 40, releasing the contact between the protective plate 9 and the inner wall of the distribution cabinet body 1, allowing the protective plate 9 to be rotated for wiring adjustment.

[0063] The operating procedures for low-voltage distribution cabinets include:

[0064] S1. Steps to open the protective plate: Move the protective plate 9 vertically upward so that the outer rod 40 is inserted into the second rectangular vertical hole 43, the inner rod 38 is disengaged from the first rectangular vertical hole 34, and the side baffle 23 is moved laterally into the second rectangular groove 31 under the action of the tension spring 36; move the second rotating shaft 32 downward to disengage from the outer rod 40, and rotate to open the protective plate 9.

[0065] S2. Adjustment steps for mounting plate: Rotate the operating plate 25 to make the limit block 27 horizontal, remove the screws of the fixed rectangular plate 16 and the fastening screws 21, slide the mounting plate 14 horizontally to the target position, insert the pin 20 to lock, and then tighten the screws.

[0066] This application can be used in the field of low-voltage distribution cabinets, or in other fields applicable to this application.

[0067] In another embodiment: Reference Figure 1-10 A low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet is used in the field of low-voltage power distribution. A braking component is installed inside the fixed partition 12, including a first rotating shaft 26 that rotates through it. A limiting block 27 is fixedly installed at one end of the first rotating shaft 26. The lower half of the limiting block 27 abuts against one side of the mounting plate 14 to achieve limiting. An operating plate 25 is fixedly installed at the other end.

[0068] When wiring operations are required on the mounting plate 14, rotating the operating plate 25 drives the first rotating shaft 26 and the limiting block 27 to rotate, so that the limiting block 27 is in a horizontal state and releases its resistance to the mounting plate 14. After removing the screws on the fixing rectangular plate 16, the mounting plate 14 can drive the upper limit plate 15 to move laterally along the bottom mounting strip 13. Positioning is achieved by inserting the pin 20 into the second pin hole 19 and the first pin hole 17, and the fastening screw 21 passes through the threaded holes 18 of the two upper limit plates 15 to fix them, thereby completing the front and rear adjustment of the mounting plate 14.

[0069] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet, characterized in that, include: The main body of the power distribution cabinet (1) has a busbar trough (8) fixedly embedded on the top of the main body of the power distribution cabinet (1), and a busbar bridge plate (2) fixedly installed on the top of the main body of the power distribution cabinet (1). A mounting bracket (3) with mounting holes (11) is installed on one side of the busbar bridge plate (2). A fixed partition (12) is vertically fixed to the inner wall of the main body (1) of the distribution cabinet, dividing the space inside the cabinet into upper and lower areas. The busbar trunking (8) is located in the area above the fixed partition (12). The protective assembly includes a second rotating shaft (32) that is slidably engaged in an elliptical groove (29) of the fixed partition (12), the second rotating shaft (32) being fixedly connected to a mounting vertical plate (22), and a protective plate (9) being fixedly mounted on the top of the mounting vertical plate (22). The mounting assembly includes two bottom mounting strips (13) symmetrically fixed to the bottom of the main body (1) of the power distribution cabinet. The bottom mounting strips (13) are slidably connected to the upper limit plate (15), and the two upper limit plates (15) together fix the mounting plate (14). The protective components also include: A first rectangular groove (24) is formed in the fixed partition (12). A first strip hole (30) is formed at the bottom of the first rectangular groove (24). A second rectangular groove (31) is formed on one side of the inner wall of the first rectangular groove (24). The bottom of the second rectangular groove (31) is connected to the first strip hole (30). A second strip hole (28) is formed on one side of the inner wall of the second rectangular groove (31). The side baffle (23) slides through the first strip hole (30), one end of which abuts against the mounting vertical plate (22), and the other end is connected to the inner wall of the first rectangular groove (24) through a tension spring (36). A toggle groove (35) is provided on one side of the bottom of the side baffle (23) to facilitate the reset of the side baffle (23). The fixed outer rod (40) is vertically fixed to the top of the elliptical groove (29), and a third rectangular vertical hole (42) is opened at its bottom. The upper half of the fixed outer rod (40) is provided with a strip vertical hole (33), and the top of the third rectangular vertical hole (42) is connected to the bottom of the strip vertical hole (33). The side baffle (23) is fixedly connected to the strip slide plate (37), and the strip slide plate (37) has a first rectangular vertical hole (34). It also includes an inner rod (38) that slides through a third rectangular vertical hole (42), with a horizontal plate (39) fixed at its top. A compression spring (41) is provided between the horizontal plate (39) and the inner top wall of the fixed outer rod (40). When the inner rod (38) engages with the first rectangular vertical hole (34), the side baffle (23) locks the vertical plate (22) in place.

2. A low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet according to claim 1, characterized in that, A protective cover (5) is detachably installed on one side of the busbar cable tray (2), and a cabinet door (6) is hinged to the open side of the main body (1) of the distribution cabinet. The cabinet door (6) is provided with a ventilation hole (4) and a door handle (7).

3. A low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet according to claim 1, characterized in that, The second rotating shaft (32) has a second rectangular vertical hole (43), and the fixed outer rod (40) slides through the second rectangular vertical hole (43). When the protective plate (9) moves upward, the fixed outer rod (40) is inserted into the second rectangular vertical hole (43) and the spring (41) is compressed, so that the inner rod (38) is disengaged from the first rectangular vertical hole (34).

4. A low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet according to claim 1, characterized in that, The installation components also include: A fixed rectangular plate (16) is symmetrically fixed on both sides of the mounting plate (14); Side mounting strip (10) is fixed to the inner wall of the main body (1) of the power distribution cabinet, and the fixed rectangular plate (16) is fixedly connected to the side mounting strip (10) by screws.

5. A low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet according to claim 4, characterized in that, The two upper limit plates (15) are fixedly connected by fastening screws (21) through threaded holes (18); After loosening the fastening screws (21) and the screws fixing the rectangular plate (16), the mounting plate (14) can slide laterally along the bottom mounting strip (13) to adjust its position.

6. A low-voltage distribution cabinet with a three-dimensional busbar cable tray installed inside the cabinet according to claim 1, characterized in that, Also includes: The braking assembly includes a first rotating shaft (26) that rotates through a fixed partition (12), with a limiting block (27) fixed at one end of the first rotating shaft (26) and an operating plate (25) fixed at the other end. When the limiting block (27) rotates to the vertical position, it abuts against the side wall of the mounting plate (14) to restrict its movement.

7. A method of using the low-voltage distribution cabinet as described in any one of claims 1-6, characterized in that, include: S1. Steps to open the protective plate: Move the protective plate (9) vertically upward so that the fixed outer rod (40) is inserted into the second rectangular vertical hole (43), the inner rod (38) is disengaged from the first rectangular vertical hole (34), and the side baffle (23) is moved laterally into the second rectangular groove (31) under the action of the tension spring (36); Move the second rotating shaft (32) downward to disengage from the fixed outer rod (40), and rotate to open the protective plate (9); S2. Adjustment steps for mounting plate: Rotate the operating plate (25) to make the limit block (27) horizontal, remove the screws and fastening screws (21) of the fixed rectangular plate (16), slide the mounting plate (14) horizontally to the target position, insert the pin (20) to lock and then tighten the screws.

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