Modular distribution box for electrical power construction

Abstract

The application discloses a modular power distribution box for electric power construction and relates to the technical field of power distribution cabinets.The modular power distribution box comprises a back plate, the side end of the back plate is provided with an expansion bolt, the side end of the back plate is provided with a splicing mechanism and a bearing moving mechanism, the side end of the side plate is inserted into the clamping groove on the mounting frame, then the top plate and the bottom plate are respectively inserted into the inserting frames at the upper end and the lower end, and the positioning operation of the splicing positioning bolt is utilized, so that the modular splicing operation of the cabinet body of the device can be realized, the device can be quickly disassembled and replaced in a modular manner when parts are damaged, the device does not need to be replaced as a whole, the maintenance cost is reduced, and when the device is maintained and repaired, the bearing plate is automatically moved outward when the cabinet door is opened through the transmission of the connecting rod, the bearing plate is free from the shielding of the shell, the bearing plate is convenient to maintain, and the maintenance efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of distribution boxes, and in particular to a modular distribution box for power construction. Background Technology

[0002] Distribution boxes are core equipment in power systems used to distribute, control, and protect electrical energy. Their applications cover multiple fields such as industry, commerce, and civil use. Through internal circuit breakers, disconnect switches, and other components, they distribute power to different circuits and have overload, leakage, and short-circuit protection functions. The power supply status can be changed through switches and buttons on the distribution box.

[0003] According to the publicly available announcement (CN117748317A), a distribution box is disclosed. This technology discloses "including a cabinet, cabinet door, motor, cooling fan, heat-absorbing metal plate and mounting strip. The cabinet has heat dissipation vents on opposite side walls at opposite positions. A plate groove is opened on the cabinet near the top of the heat dissipation vent. A baffle is slidably connected through the bottom opening of the plate groove. The size of the baffle is adapted to the size of the heat dissipation vent opening. An outer tube is embedded and fixedly connected inside the cabinet on both sides near the heat dissipation vent. A top rod is slidably connected through the top of the outer tube. The technology has the effect of adjusting the opening size of the heat dissipation vent by setting a vertically lifting baffle inside the heat dissipation vent. The baffle will not tilt outward. In rainy weather, rainwater will not flow into the distribution box. This ensures that the distribution box can stably regulate the temperature of the heat dissipation vent while preventing the entry of damp rainwater, ensuring the safety of use, and reducing the problem of aging affecting the service life."

[0004] However, in the aforementioned comparative documents, when the distribution box is exposed for a long time, the surface of the cabinet is easily corroded after contact with the outside world, making the internal wiring and control modules more easily exposed, thereby increasing the wear and tear of the device and the risk to electrical safety. Furthermore, the installation structure of the distribution box, which is integrally welded and bolted, makes it difficult to replace and reduce costs by performing only partial repairs after local damage. Moreover, when inspecting the internal wiring, the cabinet obstructs the inspection work, making the inspection work difficult and greatly increasing the maintenance difficulty.

[0005] Therefore, the present invention provides a modular distribution box for power construction. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a modular distribution box for power construction, which solves the problems of difficult repair of damaged distribution cabinet parts and difficulties in line maintenance.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a modular distribution box for power construction, comprising a back plate, expansion bolts on the side end of the back plate, an assembly mechanism and a load-bearing moving mechanism on the side end of the back plate, the assembly mechanism comprising a mounting frame, a slot, a side plate, a bracket, a top plate, a bottom plate, a cabinet door, assembly positioning holes, assembly positioning bolts, a support plate and a bracket, the side end of the mounting frame being fixedly connected to the back plate, the slot being formed inside the mounting frame, the side end of the side plate being slidably connected to the mounting frame via the slot, the brackets being respectively disposed at the upper and lower ends of the side plate, and the side end of the top plate being connected to the side plate. The upper end of the corresponding bracket is slidably connected, the side end of the base plate is slidably connected to the lower end of the side plate corresponding to the bracket, the side end of the cabinet door is rotatably connected to the side plate, the bearing and moving mechanism includes a bearing plate, a first slide rail, a pull rod base, a connecting rod, a pivot bolt, a second slide rail, a moving seat, a pulley, a moving positioning bolt, a baffle and a moving positioning hole, the bearing plate is set at the side end of the back plate, the side end of the first slide rail is fixedly connected to the cabinet door, the surface of the pull rod base is slidably connected to the first slide rail, one end of the connecting rod is rotatably connected to the pull rod base, the other end of the connecting rod is rotatably connected to the pivot bolt, and the surface of the pivot bolt is threadedly connected to the bearing plate.

[0008] In a preferred embodiment, the assembly positioning holes are respectively opened at the upper and lower ends of the side of the side plate, the side ends of the assembly positioning bolts are fixedly connected to the top plate and the bottom plate respectively, and the side ends of the assembly positioning bolts are slidably connected to the side plate.

[0009] The technical effect of adopting the above-mentioned further solution is that the top plate and bottom plate can be fixed on the side plate after installation, which strengthens the sturdiness of the device shell.

[0010] In a preferred embodiment, the side end of the tray is fixedly connected to the back plate, the upper end of the tray is slidably connected to the bottom plate, the upper end of the bracket is fixedly connected to the tray, and the lower end of the bracket is fixedly connected to the back plate.

[0011] The technical effect of adopting the above-mentioned further solution is that the assembled shell can be fixed more stably, and the stress points are distributed by adding a support structure, so as to avoid excessive stress at the interface between the bottom plate and the side plate, which could lead to damage.

[0012] In a preferred embodiment, the side end of the second slide rail is fixedly connected to the back plate, the movable seat is fixedly connected to the upper and lower ends of the support plate, the pulley is rotatably connected to both sides of the movable seat, and the surface of the pulley is in rolling contact with the second slide rail.

[0013] The technical effect of adopting the above-mentioned further solution is that by setting up pulleys and a second slide rail for guidance, the support plate is more stable when moving and will not rotate.

[0014] In a preferred embodiment, the side end of the movable positioning bolt is fixedly connected to the movable seat, the side end of the baffle is fixedly connected to the top plate and the bottom plate respectively, the movable positioning hole is opened on the surface of the baffle, and the surface of the movable positioning bolt is slidably connected to the baffle.

[0015] The technical effect of adopting the above-mentioned further solution is that by setting a baffle to prevent the bearing plate from slipping, and by using a movable positioning bolt to position the moved bearing plate, the device is prevented from sliding during maintenance.

[0016] In a preferred embodiment, the side end of the side plate is provided with a positioning support mechanism, which includes an elastic steel plate, a locking strip, a strip groove, an inserting arc surface, an exiting arc surface, a guide rod, and an anti-detachment ring. The side end of the elastic steel plate is fixedly connected to the side plate, the side end of the locking strip is fixedly connected to the elastic steel plate, the strip groove is formed on the side end of the bearing plate, and the surface of the locking strip is slidably connected to the bearing plate through the strip groove.

[0017] The technical effect of adopting the above-mentioned further solution is that by setting it up, the device is prevented from being shaken or impacted by external forces during operation, which would cause the support plate to move significantly and thus damage the internal functional modules and circuits, thereby making the device more adaptable to the environment.

[0018] In a preferred embodiment, the inserting arc surface is located on the outer side of the card strip, and the disengaging arc surface is located on the inner side of the card strip.

[0019] The technical effect of adopting the above-mentioned further solution is that by setting it so that the card strip is squeezed and deformed, the positioning of the bearing plate is released.

[0020] In a preferred embodiment, the side end of the guide rod is fixedly connected to the elastic steel plate, the surface of the guide rod is slidably connected to the side plate, the side end of the anti-detachment ring is fixedly connected to the guide rod, and the side end of the anti-detachment ring is slidably connected to the side plate.

[0021] The technical effect of adopting the above-mentioned further solution is that by setting a guide rod to guide the deformation of the elastic steel plate, it will only drive the clip to move to the side, thereby making the positioning support mechanism to release the bearing plate more smoothly.

[0022] In a preferred embodiment, the surface of the base plate is provided with inlet and outlet grooves, and there are two inlet and outlet grooves symmetrically distributed. The surface of the bearing plate is fixedly connected to a fixed guide rail by bolts, and a circuit breaker is provided on the surface of the fixed guide rail.

[0023] The technical effect of adopting the above-mentioned further solution is that the circuit breaker can be fixed inside the device, and the line is connected to the outside through the inlet and outlet cable trays.

[0024] This invention provides a modular distribution box for power construction. It has the following advantages:

[0025] By aligning the side end of the side panel with the slot on the mounting bracket and inserting it, and then aligning the top and bottom plates with the upper and lower brackets respectively, and using the positioning bolts, the modular assembly of the device cabinet can be achieved. This allows for quick modular disassembly and replacement of damaged parts without the need for complete replacement, reducing maintenance costs. Furthermore, when performing maintenance and repairs inside the device, the connecting rod drives the cabinet door to automatically move the support plate outwards when it is opened, eliminating the obstruction of the support plate by the outer shell, facilitating maintenance and accelerating repair efficiency.

[0026] The positioning support mechanism prevents the load-bearing plate from shifting significantly due to external shaking or impacts during operation, which could damage internal functional modules and wiring. This enhances the device's environmental adaptability and reduces maintenance requirements. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a modular distribution box for power construction according to the present invention;

[0028] Figure 2 This is a schematic diagram of the side panel and related parts of a modular distribution box for power construction according to the present invention;

[0029] Figure 3 This is a schematic diagram of a modular distribution box support plate and related parts for power construction according to the present invention;

[0030] Figure 4 This invention relates to a modular distribution box for power construction. Figure 3 Enlarged 3D structural diagram at point A in the middle;

[0031] Figure 5 This is a schematic diagram of a modular distribution box connecting rod and related parts for power construction according to the present invention;

[0032] Figure 6 This invention relates to a modular distribution box for power construction. Figure 6 Enlarged 3D structural diagram at point B;

[0033] Figure 7 This is a schematic diagram of the top plate of a modular distribution box for power construction and related parts according to the present invention.

[0034] Figure 8 This is a schematic diagram of a modular distribution box shaft bolt and related parts for power construction according to the present invention.

[0035] Figure 9 This is a schematic diagram of the second slide rail and related parts of a modular distribution box for power construction according to the present invention.

[0036] Figure 10 This invention relates to a modular distribution box for power construction. Figure 9 Enlarged 3D structural diagram at point C.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Back plate; 2. Expansion bolts;

[0039] 3. Assembly mechanism; 301. Mounting bracket; 302. Slot; 303. Side panel; 304. Insert bracket; 305. Top panel; 306. Bottom panel; 307. Cabinet door; 308. Assembly positioning hole; 309. Assembly positioning bolt; 3010. Support plate; 3011. Bracket;

[0040] 4. Bearing and moving mechanism; 401. Bearing plate; 402. First slide rail; 403. Tie rod base; 404. Connecting rod; 405. Rotary shaft bolt; 406. Second slide rail; 407. Moving seat; 408. Pulley; 409. Moving positioning bolt; 4010. Baffle; 4011. Moving positioning hole;

[0041] 5. Positioning support mechanism; 501. Elastic steel plate; 502. Clamping strip; 503. Strip groove; 504. Engaging arc surface; 505. Disengaging arc surface; 506. Guide rod; 507. Anti-detachment ring;

[0042] 6. Cable trays; 7. Fixed guide rails; 8. Circuit breakers. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Example

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, the present invention provides a technical solution: a modular distribution box for power construction, including a back plate 1, with expansion bolts 2 provided on the side end of the back plate 1, the back plate 1 being fixed to the wall by the expansion bolts 2, and an assembly mechanism 3 and a load-bearing moving mechanism 4 provided on the side end of the back plate 1. The assembly mechanism 3 includes a mounting frame 301, a slot 302, a side plate 303, a bracket 304, a top plate 305, a bottom plate 306, a cabinet door 307, an assembly positioning hole 308, an assembly positioning bolt 309, a support plate 3010, and a bracket 3011. The side end of the mounting frame 301 is fixedly connected to the back plate 1, and the side plate 303 can be fixed to the back plate 1 by the mounting frame 301. The slot 302 is formed in the mounting frame 301. Inside the cabinet 1, the mounting bracket 301 has an open top and a closed bottom. The side end of the side plate 303 is slidably connected to the mounting bracket 301 via a slot 302, which is compatible with the mounting bracket 301. Insert brackets 304 are respectively set at the upper and lower ends of the side plate 303. The side end of the top plate 305 is slidably connected to the corresponding insert bracket 304 at the upper end of the side plate 303. The side end of the bottom plate 306 is slidably connected to the corresponding insert bracket 304 at the lower end of the side plate 303. The top plate 305 and the bottom plate 306 are respectively compatible with the corresponding insert bracket 304. The side end of the cabinet door 307 is rotatably connected to the side plate 303. The load-bearing moving mechanism 4 includes a load-bearing plate 401, a first slide rail 402, a pull rod base 403, a connecting rod 404, and a rotating shaft. The back panel 1 includes a bolt 405, a second slide rail 406, a movable base 407, a pulley 408, a movable positioning bolt 409, a baffle 4010, and a movable positioning hole 4011. A support plate 401 is located on the side of the back panel 1. The side of the first slide rail 402 is fixedly connected to the cabinet door 307. The surface of the pull rod base 403 is slidably connected to the first slide rail 402, and the pull rod base 403 is adapted to the first slide rail 402. One end of the connecting rod 404 is rotatably connected to the pull rod base 403, and the other end of the connecting rod 404 is rotatably connected to the pivot bolt 405. The surface of the pivot bolt 405 is threadedly connected to the support plate 401. When the cabinet door 307 is pulled, the support plate 401 can be moved via the connecting rod 404. First, the back panel 1... The device is fixed to the wall with expansion bolts 2. Then, the side end of the side plate 303 is aligned with the slot 302 on the mounting bracket 301 and inserted. The top plate 305 and bottom plate 306 are aligned with the upper and lower brackets 304 respectively and inserted. The installation of the outer shell can be completed quickly. Then, the swivel bolt 405 is passed through the connecting rod 404 and rotated to fix it to the upper and lower ends of the bearing plate 401. When a part of the device outer shell is damaged, it can be quickly disassembled and replaced. At the same time, when the device is inspected and maintained, the cabinet door 307 is opened by rotating it. The cabinet door 307 drives the bearing plate 401 out of the device through the connecting rod 404, freeing the bearing plate 401 from the obstruction of the outer shell and facilitating its maintenance.

[0046] like Figure 1 - Figure 7As shown: Assembly positioning holes 308 are respectively opened at the upper and lower ends of the side of the side plate 303. There are a total of four assembly positioning holes 308, one at each of the upper and lower ends of each side plate 303. The side ends of the assembly positioning bolts 309 are fixedly connected to the top plate 305 and the bottom plate 306 respectively. The side ends of the assembly positioning bolts 309 are slidably connected to the side plate 303. After the assembly positioning bolts 309 are aligned with the assembly positioning holes 308 and inserted, the arc surface of the assembly positioning bolts 309 can be squeezed to deform them into the assembly positioning holes 308, and then they can return to their original shape and lock themselves into the side end of the side plate 303. Thus, the installed top plate 305 and bottom plate 306 can be fixed on the side plate 303.

[0047] like Figure 1 - Figure 2 As shown: the side end of the support plate 3010 is fixedly connected to the back plate 1, the upper end of the support plate 3010 is slidably connected to the bottom plate 306, and the bottom plate 306 is supported by the support plate 3010 after insertion. The upper end of the bracket 3011 is fixedly connected to the support plate 3010, and the lower end of the bracket 3011 is fixedly connected to the back plate 1. By adding a support structure, the pressure at the contact point between the bottom plate 306 and the bracket 304 is reduced and distributed to the support plate 3010 and the bracket 3011, so as to avoid excessive force at the interface between the bottom plate 306 and the side plate 303, which could lead to damage.

[0048] like Figure 1 - Figure 4 As shown: The side end of the second slide rail 406 is fixedly connected to the back plate 1. There are four second slide rails 406, which are symmetrically arranged on the back plate 1 in the upper, lower and left and right directions to maintain force balance. The movable seats 407 are fixedly connected to the upper and lower ends of the support plate 401 respectively. The pulleys 408 are rotatably connected to both sides of the movable seats 407 respectively. The surface of the pulleys 408 is in rolling contact with the second slide rail 406. When the support plate 401 is pulled, the support plate 401 slides along the pulleys 408 through the guidance of the movable seats 407 and the pulleys 408, thereby avoiding the rotation of the support plate 401 from causing the internal connecting wires to get tangled together, making it easier to maintain.

[0049] like Figure 1 - Figure 5As shown: The side end of the movable positioning bolt 409 is fixedly connected to the movable seat 407, and one arc end of the movable positioning bolt 409 points towards the cabinet door 307. The side ends of the baffle 4010 are fixedly connected to the top plate 305 and the bottom plate 306 respectively. The movable positioning hole 4011 is opened on the surface of the baffle 4010, and the movable positioning hole 4011 corresponds one-to-one with the movable positioning bolt 409. The surface of the movable positioning bolt 409 is slidably connected to the baffle 4010. The position of the baffle 4010 is exactly at the outer end of the second slide rail 406, thereby preventing the support plate 401 from sliding after movement. When the support plate 401 moves outward, it drives the movable positioning bolt 409 to move, so that the movable positioning bolt 409 is aligned with the movable positioning hole 4011 and inserted into the baffle 4010 to position the support plate 401, preventing the support plate 401 from sliding during maintenance. After maintenance, pinching one end of the movable positioning bolt 409 can release the constraint of the baffle 4010 on the movable positioning bolt 409. At this time, the cabinet door 307 is rotated again to close the device, and the support plate 401 can slide again on the second slide rail 406.

[0050] like Figure 9 - Figure 10 As shown: A positioning support mechanism 5 is provided on the side end of the side plate 303. The positioning support mechanism 5 includes an elastic steel plate 501, a locking strip 502, a strip groove 503, an inserting arc surface 504, an exiting arc surface 505, a guide rod 506, and an anti-detachment ring 507. The side end of the elastic steel plate 501 is fixedly connected to the side plate 303. There are two elastic steel plates 501, which are symmetrically arranged on the two side plates 303 respectively. The side end of the locking strip 502 is fixedly connected to the elastic steel plate 501, and this side end faces the bearing plate 401. The strip groove 503 is formed on the side of the bearing plate 401. At the end, there are two strip grooves 503, which are respectively set on the left and right sides of the support plate 401. The surface of the clamping strip 502 is slidably connected to the support plate 401 through the strip groove 503. By using the push of the deformable elastic steel plate 501, the clamping strip 502 is pushed inward from both sides, thereby fixing the support plate 401 through the strip groove 503. This prevents the support plate 401 from moving significantly due to external shaking and impact during operation, which could damage the internal functional modules and circuits, thus making the device more adaptable to the environment.

[0051] like Figure 9 - Figure 10As shown: the inserting arc surface 504 is located on the outer side of the locking strip 502, and the disengaging arc surface 505 is located on the inner side of the locking strip 502. Both the outer and inner sides face the end of the bearing plate 401. When the bearing plate 401 moves inward, the inserting arc surface 504 is compressed, causing the elastic steel plate 501 to deform. The locking strip 502 first moves outward, and then the elastic steel plate 501 returns to its original state, pushing the locking strip 502 inward again, thereby inserting it into the strip groove 503 to position the bearing plate 401. When the bearing plate 401 moves outward, the disengaging arc surface 505 is compressed, causing the elastic steel plate 501 to deform, and the locking strip 502 moves outward, thereby releasing the positioning of the bearing plate 401.

[0052] like Figure 9 - Figure 10 As shown: the side end of the guide rod 506 is fixedly connected to the elastic steel plate 501, the surface of the guide rod 506 is slidably connected to the side plate 303, the outer circumference of the guide rod 506 is equal to the inner circumference of the side plate 303, the side end of the anti-detachment ring 507 is fixedly connected to the guide rod 506, and the side end of the anti-detachment ring 507 is slidably connected to the side plate 303. When the elastic steel plate 501 deforms, it drives the locking strip 502 to move. However, through the guidance of the guide rod 506, the deformation of the elastic steel plate 501 only drives the locking strip 502 to move to the side, thereby making the positioning support mechanism 5 more smoothly release the positioning of the bearing plate 401.

[0053] like Figure 1 - Figure 3 As shown: The surface of the base plate 306 is provided with inlet and outlet grooves 6. There are two inlet and outlet grooves 6, which are symmetrically distributed. The surface of the support plate 401 is fixedly connected to the fixed guide rail 7 by bolts. The support plate 401 is adapted to the fixed guide rail 7. The surface of the fixed guide rail 7 is provided with a circuit breaker 8. The connecting wire enters and exits the device through the inlet and outlet grooves 6. The circuit breaker 8 is fixed on the fixed guide rail 7 and moves with the support plate 401. The control circuit is controlled by the connecting wire.

[0054] Working principle:

[0055] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, this modular distribution box for power construction is used by first fixing the back plate 1 to the wall using expansion bolts 2. Then, aligning the side end of the side plate 303 with the slot 302 on the mounting bracket 301 and inserting it. Next, inserting the bearing plate 401 along the second slide rail 406 via the movable seat 407 and pulley 408, and then rotating and fixing the pivot bolt 405 through the connecting rod 404 to the upper and lower ends of the bearing plate 401 respectively. Finally, aligning the top plate 305 and the bottom plate 306 with the upper and lower ends respectively. The insert bracket 304 is inserted, and the assembly positioning bolt 309 is aligned with the assembly positioning hole 308. After insertion, the arc surface of the assembly positioning bolt 309 can be squeezed to deform it into the assembly positioning hole 308, and then it returns to its original shape to lock itself onto the side end of the side plate 303. This allows the installed top plate 305 and bottom plate 306 to be fixed on the side plate 303, thus quickly completing the installation of the outer shell. In case of damage to parts, the assembly positioning bolt 309 can be squeezed to release the bolt. This modular design allows for easy disassembly and replacement without requiring a complete replacement, reducing maintenance costs. When performing maintenance on the device, rotating the cabinet door 307 opens the door, which in turn drives the support plate 401 to slide outwards along the second slide rail 406 via the connecting rod 404, moving it out of the device. The support plate 401 then moves the movable positioning bolt 409, aligning it with the movable positioning hole 4011 and inserting it into the baffle 4010 to position the support plate 401, preventing it from sliding during maintenance. After maintenance, pinching one arc-shaped end of the movable positioning bolt 409 releases the constraint of the baffle 4010. Rotating the cabinet door 307 again closes the device, allowing the support plate 401 to slide again on the second slide rail 406 and return to the device. This mechanism eliminates the obstruction of the outer shell on the support plate 401, facilitating maintenance and accelerating maintenance efficiency.

[0056] When the bearing plate 401 moves inward, the interlocking arc surface 504 is compressed, causing the elastic steel plate 501 to deform. The locking strip 502 first moves outward, then the elastic steel plate 501 returns to its original state and pushes the locking strip 502 inward again, thereby inserting it into the strip groove 503 to position the bearing plate 401. When the bearing plate 401 moves outward, the interlocking arc surface 505 is compressed, causing the elastic steel plate 501 to deform and the locking strip 502 to move outward, thereby releasing the positioning of the bearing plate 401. Through the setting of the positioning support mechanism 5, the bearing plate 401 is prevented from moving significantly due to external shaking and impact during operation, which could damage the internal functional modules and circuits. This makes the device more adaptable to the environment and reduces maintenance.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A modular distribution box for power construction, comprising a back panel (1), characterized in that, The back plate (1) is provided with expansion bolts (2) on its side end. The back plate (1) is provided with an assembly mechanism (3) and a load-bearing moving mechanism (4) on its side end. The assembly mechanism (3) includes a mounting bracket (301), a slot (302), a side plate (303), a insert bracket (304), a top plate (305), a bottom plate (306), a cabinet door (307), an assembly positioning hole (308), an assembly positioning bolt (309), a support plate (3010), and a bracket (3011). The side end of the mounting bracket (301) is fixedly connected to the back plate (1). The slot (302) is opened inside the mounting bracket (301). The side end of the side plate (303) is slidably connected to the mounting bracket (301) through the slot (302). The brackets (304) are respectively set at the upper and lower ends of the side plate (303). The side end of the top plate (305) is slidably connected to the bracket (304) corresponding to the upper end of the side plate (303). The side end of the bottom plate (306) is slidably connected to the bracket (304) corresponding to the lower end of the side plate (303). The side end of the cabinet door (307) is rotatably connected to the side plate (303). The bearing moving mechanism (4) includes a bearing plate (401), a first slide rail (402), a pull rod base (403), a connecting rod (404), a pivot bolt (405), a second slide rail (406), a moving seat (407), a pulley (408), a moving positioning bolt (409), a baffle (4010), and a moving positioning hole (4011). The bearing plate (401) is set on the side end of the back plate (1). The side end of the first slide rail (402) is fixedly connected to the cabinet door (307). The surface of the pull rod base (403) is slidably connected to the first slide rail (402). One end of the connecting rod (404) is rotatably connected to the pull rod base (403). The other end of the connecting rod (404) is rotatably connected to the pivot bolt (405). The surface of the pivot bolt (405) is threadedly connected to the bearing plate (401).

2. A modular distribution box for power construction according to claim 1, characterized in that: The assembly positioning holes (308) are respectively opened at the upper and lower ends of the side of the side plate (303). The side ends of the assembly positioning bolts (309) are fixedly connected to the top plate (305) and the bottom plate (306) respectively. The side ends of the assembly positioning bolts (309) are slidably connected to the side plate (303).

3. A modular distribution box for power construction according to claim 1, characterized in that: The side end of the tray (3010) is fixedly connected to the back plate (1), the upper end of the tray (3010) is slidably connected to the bottom plate (306), the upper end of the bracket (3011) is fixedly connected to the tray (3010), and the lower end of the bracket (3011) is fixedly connected to the back plate (1).

4. A modular distribution box for power construction according to claim 1, characterized in that: The side end of the second slide rail (406) is fixedly connected to the back plate (1), the movable seat (407) is fixedly connected to the upper and lower ends of the bearing plate (401), the pulley (408) is rotatably connected to both sides of the movable seat (407), and the surface of the pulley (408) is rolledly connected to the second slide rail (406).

5. A modular distribution box for power construction according to claim 1, characterized in that: The side end of the movable positioning bolt (409) is fixedly connected to the movable seat (407), the side end of the baffle (4010) is fixedly connected to the top plate (305) and the bottom plate (306) respectively, the movable positioning hole (4011) is opened on the surface of the baffle (4010), and the surface of the movable positioning bolt (409) is slidably connected to the baffle (4010).

6. A modular distribution box for power construction according to claim 1, characterized in that: The side end of the side plate (303) is provided with a positioning support mechanism (5). The positioning support mechanism (5) includes an elastic steel plate (501), a locking strip (502), a strip groove (503), an inserting arc surface (504), an exiting arc surface (505), a guide rod (506), and an anti-detachment ring (507). The side end of the elastic steel plate (501) is fixedly connected to the side plate (303). The side end of the locking strip (502) is fixedly connected to the elastic steel plate (501). The strip groove (503) is opened on the side end of the bearing plate (401). The surface of the locking strip (502) is slidably connected to the bearing plate (401) through the strip groove (503).

7. A modular distribution box for power construction according to claim 6, characterized in that: The inserting arc surface (504) is located on the outside of the card strip (502), and the disengaging arc surface (505) is located on the inside of the card strip (502).

8. A modular distribution box for power construction according to claim 6, characterized in that: The side end of the guide rod (506) is fixedly connected to the elastic steel plate (501), the surface of the guide rod (506) is slidably connected to the side plate (303), the side end of the anti-detachment ring (507) is fixedly connected to the guide rod (506), and the side end of the anti-detachment ring (507) is slidably connected to the side plate (303).

9. A modular distribution box for power construction according to claim 1, characterized in that: The base plate (306) has two inlet and outlet grooves (6) on its surface. The bearing plate (401) is fixedly connected to a fixed guide rail (7) by bolts. A circuit breaker (8) is provided on the surface of the fixed guide rail (7).

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