Layered isolation type strong and weak current integrated distribution box

Abstract

The application discloses a layered isolation type strong and weak current integrated distribution box and belongs to the technical field of distribution boxes. The distribution box comprises a box assembly, the box assembly comprises a strong current box body and a weak current box body, a partitioning partition plate is fixedly connected between the strong current box body and the weak current box body, the partitioning partition plate is hollow and open on both sides, a negative pressure air suction hole in communication with the strong current box body is arranged at the bottom of the side of the partitioning partition plate facing the strong current box body, and a heat dissipation assembly is mounted on one side of the box assembly. When the heat dissipation fan blows air to the outside of the partitioning partition plate, negative pressure is formed in the partitioning partition plate, hot air in the weak current box body is sucked into the partitioning partition plate through the air outlet channel, negative pressure is formed at the negative pressure air suction hole to suck hot air in the strong current box body into the partitioning partition plate and then discharge the hot air uniformly, energy waste and condensation risks caused by excessive heat dissipation are avoided, heat dissipation of two areas can be simultaneously completed by using only one heat dissipation assembly, and equipment cost and internal space occupation of the cabinet are greatly reduced.

Description

Technical Field

[0001] This invention belongs to the field of distribution box technology, specifically, it relates to a layered isolation integrated strong and weak current distribution box. Background Technology

[0002] Integrated low-voltage distribution boxes are a new type of power distribution device that integrates high-voltage power distribution and low-voltage control, which traditionally require separate boxes, into a single cabinet. Through partitioned layout, metal partition shielding, and independent wiring channels, it achieves physical and electromagnetic dual isolation of the two types of components within a limited space. While ensuring that high-voltage and low-voltage circuits do not interfere with each other, it completes the distribution, monitoring, and intelligent management of electrical energy. Compared with the traditional separate box setup, this integrated design significantly saves installation space and material costs, while improving system integration and ease of operation and maintenance. It has been widely used in intelligent buildings, industrial automation, and other scenarios that require a high degree of integration of power distribution and control.

[0003] Utility model CN224021289U discloses an electrical control cabinet with layered protection for strong and weak currents. The cabinet includes a control cabinet with vertical connecting rods fixedly connected to the front and rear ends of both sides of the interior. A first partition plate is connected between the four vertical connecting rods. A strong current zone is set inside the control cabinet at the upper part of the first partition plate. Three first cable routing holes are evenly spaced at the rear end of the first partition plate. A second partition plate is set at the lower end of the first partition plate. A weak current zone is set inside the control cabinet at the lower end of the second partition plate. Three second cable routing holes are evenly spaced at the front end of the second partition plate. A wiring area is set between the first and second partition plates. Vertical partition plates are set on both sides of the middle of the wiring area between the first and second partition plates. The first and second partition plates divide the interior of the electrical control cabinet into independent strong current, weak current, and wiring areas, effectively preventing electromagnetic interference from strong currents to weak current equipment.

[0004] Although this device can separate the high-voltage and low-voltage electrical circuits to avoid electromagnetic interference, the integrated high-voltage and low-voltage distribution box generates a lot of heat during operation due to the high current in the high-voltage area, while the low-voltage area is more sensitive to temperature and has a smaller heat dissipation requirement. There is a significant difference in the thermal management needs of the two areas. While the solid partition blocks electromagnetic interference, it also completely blocks the airflow path between the upper and lower areas, forcing the cabinet to rely solely on ventilation holes on the side walls for indiscriminate ventilation. This makes it impossible to manage the different heat dissipation needs of the high-voltage and low-voltage areas separately, resulting in limited heat dissipation efficiency. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] To address the issue raised in the background section regarding the integrated power distribution box for both high-voltage and low-voltage circuits, where the high-voltage area generates significant heat due to high current operation, while the low-voltage area is more temperature-sensitive and has lower heat dissipation requirements, resulting in significant differences in thermal management needs, and the fact that solid partitions, while blocking electromagnetic interference, also completely obstruct airflow between the upper and lower areas, forcing the cabinet to rely solely on ventilation holes on the side walls for indiscriminate ventilation and hindering differentiated management for the different heat dissipation needs of the high-voltage and low-voltage areas, thus limiting heat dissipation efficiency, this invention adopts the following technical solution.

[0007] A layered, isolated integrated power distribution box for both high and low voltage circuits includes a box assembly comprising a high voltage box and a low voltage box. A rotating door is rotatably connected to the outside of the box assembly. A bottom air inlet communicating with the interior of the high voltage box is located on the outer wall near the bottom. A rain-guiding box top is fixedly connected to the top of the low voltage box. A top air inlet communicating with the interior of the low voltage box is located at the bottom of the outer edge of the rain-guiding box top. A partition is fixedly connected between the high voltage and low voltage boxes. The partition is hollow inside and open on both sides. A negative pressure air intake hole communicating with the high voltage box is located at the bottom of the partition facing the high voltage box. A heat dissipation component is installed on one side of the box assembly. The heat dissipation component creates negative pressure inside the partition, causing the negative pressure air intake hole to draw air from inside the high voltage box into the partition and then discharge it.

[0008] Preferably, a mounting bracket is installed inside the low-voltage electrical box, and a moving component is installed inside the low-voltage electrical box. The moving component enables the mounting bracket to move to the front of the low-voltage electrical box and move downward, so that the mounting bracket is located at a lower position outside the box assembly.

[0009] Preferably, the heat dissipation component includes an air outlet duct, a filter screen, and a cooling fan. An opening is provided on the outer wall side of the low-voltage box near the bottom. One end of the air outlet duct is detachably connected to the opening on the low-voltage box, and the other end of the air outlet duct is detachably connected to one side opening of the partition plate. The cooling fan is detachably connected to the hollow part inside the partition plate and blows air towards the partition plate opening away from the air outlet duct.

[0010] Preferably, the movable component includes a vertical slide rail and a horizontal slide rail. The vertical slide rail is symmetrically and detachably connected to the bottom inner side of the low-voltage box. The horizontal slide rail is symmetrically and slidably connected to the inside of the vertical slide rail. Sliding blocks are fixedly connected to the outer walls on both sides of the mounting bracket. The sliding blocks are slidably connected to the inside of the adjacent horizontal slide rail.

[0011] Preferably, a slow-descent component is installed on the vertical slide rail, which enables the mounting frame to descend slowly.

[0012] Preferably, the slow-descent assembly includes a steel wire traction rope, a guide wheel, a guide fixing ring, and a counterweight. One end of the steel wire traction rope is detachably connected to the upper end of the horizontal slide rail located inside the vertical slide rail. The guide wheel is rotatably connected to both sides inside the low-voltage box. The steel wire traction ropes on both sides are attached to the outer wall of the guide wheel and hang downwards. The ends of the steel wire traction ropes on both sides are detachably connected to the counterweight. The outer walls of both vertical slide rails are detachably connected to guide fixing rings, and the steel wire traction rope passes through the guide fixing rings.

[0013] Preferably, the bottom two sides of the mounting frame are rotatably connected to rotating shafts, and the outer walls of the rotating shafts on both sides are fixedly connected to support legs. When the mounting frame descends, the support legs naturally hang down and contact the ground under the action of gravity.

[0014] Preferably, a locking component is installed on the outer wall of the partition plate to fix the position of the mounting bracket.

[0015] Preferably, the locking assembly includes a reset spring, a blocking plate, and a connecting plate. Sliding grooves are provided on both sides of the outer wall of the partition plate. The reset springs are symmetrically arranged on the inner bottom of the sliding grooves on both sides. The blocking plate is slidably connected to the inside of the sliding groove. The connecting plate is fixedly connected to the blocking plates on both sides. When the mounting bracket is located inside the low-voltage box, the blocking plates on both sides abut against the ends of the support legs on both sides.

[0016] Preferably, the back of the high-voltage box and the low-voltage box are provided with a hollow layer, and the partition is provided with a through groove, which is connected to the hollow part of the back of the high-voltage box and the low-voltage box.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, when the cooling fan blows air to the outside of the partition, it creates a negative pressure inside, drawing the hot air from the low-voltage box into the partition through the air outlet. At the same time, a negative pressure is created at the negative pressure air intake hole to draw the hot air from the high-voltage box into the partition and discharge it uniformly. The high-voltage box is directly connected to the partition through the negative pressure air intake hole to obtain a larger air volume, meeting its heat dissipation needs for high heat generation. The low-voltage box is indirectly connected through the air outlet to obtain a moderate air volume, avoiding energy waste and condensation risks caused by excessive heat dissipation. Only one heat dissipation component can complete the heat dissipation of two areas at the same time, greatly reducing equipment costs and cabinet internal space occupation. 2. In this invention, the moving assembly composed of vertical and horizontal slide rails can drive the mounting frame to move horizontally outward to the front of the low-voltage box, and then vertically downward to a lower position outside the box. Maintenance personnel can replace and maintain low-voltage components without climbing. The counterweight slow-descent assembly connects the counterweight block to the horizontal slide rail through a steel wire traction rope and guide wheel, so that the mounting frame descends slowly under the action of gravity without the need for maintenance personnel to lift it. When resetting, the counterweight block can also provide auxiliary pulling force to reduce the operation intensity. The support legs at the bottom of the mounting frame automatically droop down to contact the ground when descending, bearing the main weight of the mounting frame and avoiding long-term deformation of the horizontal slide rail under load, while improving the stability of the maintenance process. 3. In this invention, under normal conditions, the blocking plate of the locking component presses upward against the end of the support leg under the action of the reset spring, fixing the mounting bracket inside the low-voltage box to prevent accidental movement of the mounting bracket during use and pulling of the wires, which could lead to safety accidents. When maintenance is required, simply press down on the connecting plate to unlock both blocking plates at the same time. The operation is simple and quick. The filter screen plate set at the air outlet inlet can effectively block dust from entering the cooling fan. The filter screen plate adopts a detachable connection method, which is convenient for regular cleaning and maintenance. 4. All power and data cables are laid in the hollow layer at the back of the cabinet, achieving fully concealed wiring and ensuring a clean appearance of the cabinet. The partition panel has a penetration groove on the side facing the hollow layer at the back. The heat generated by the cables in the hollow layer at the back can enter the partition panel through the penetration groove and be discharged with the main airflow. There is no need to set up an additional cable heat dissipation structure, which effectively reduces the aging speed of the cables and improves the operational safety and service life of the electrical system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a layered isolation integrated power distribution box for strong and weak current in this invention; Figure 2 This is a schematic diagram of the internal structure of the integrated strong and weak current distribution box in this invention; Figure 3 This is a side view of the integrated power distribution box for strong and weak current in this invention. Figure 4 This is a schematic diagram of the heat dissipation airflow in this invention; Figure 5 This is a schematic diagram of the heat dissipation component structure in this invention; Figure 6 This is a schematic diagram of the mobile component structure in this invention; Figure 7 In this invention Figure 6 Enlarged structural diagram of section A; Figure 8 This is a schematic diagram of the locking component structure in this invention; Figure 9 In this invention Figure 8Enlarged structural diagram of section B.

[0019] The correspondence between the labels and component names in the attached figures is as follows: 100. Enclosure assembly; 101. Rotating enclosure door; 102. High-voltage electrical enclosure; 103. Low-voltage electrical enclosure; 104. Rain-guiding enclosure top; 105. Mounting bracket; 106. Top air inlet; 107. Bottom air inlet; 200. Partition plate; 201. Negative pressure suction hole; 202. Sliding groove; 203. Penetration groove; 300. Heat dissipation assembly; 301. Air outlet duct; 302. Filter plate; 303. Cooling fan; 400. Moving component; 401. Vertical slide rail; 402. Horizontal slide rail; 403. Steel wire traction rope; 404. Counterweight; 405. Guide wheel; 406. Guide fixing ring; 500. Locking assembly; 501. Return spring; 502. Blocking plate; 503. Connecting plate; 504. Support leg; 505. Rotating shaft. Detailed Implementation

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments. The present invention provides the following embodiments.

[0023] like Figure 1The diagram shown is a schematic representation of a layered, isolated integrated power distribution box for strong and weak current circuits according to a preferred embodiment of the present invention. This layered, isolated integrated power distribution box for strong and weak current circuits includes a box assembly 100, which comprises a strong current box 102 and a weak current box 103. A rotating door 101 is rotatably connected to the outside of the box assembly 100. A bottom air inlet 107, communicating with the interior of the strong current box 102, is provided on the outer wall near the bottom. A rain-guiding top 104 is fixedly connected to the top of the weak current box 103. The bottom of the outer edge of the rain guide box 104 is provided with a top air inlet 106 that communicates with the interior of the low-voltage box 103. The back of the high-voltage box 102 and the low-voltage box 103 are provided with a hollow layer. In this embodiment, the box assembly 100 is divided into a high-voltage box 102 and a low-voltage box 103 by a partition 200, which can effectively isolate electromagnetic interference between high and low voltage. The hollow layer is used for wiring, and the bottom air inlet 107 and the top air inlet 106 provide heat dissipation air intake for the high-voltage box 102 and the low-voltage box 103, respectively.

[0024] To facilitate heat dissipation for both the high-voltage enclosure 102 and the low-voltage enclosure 103, the specific structure can be as follows: Figure 2 as well as Figure 4 In the embodiment shown, a partition plate 200 is fixedly connected between the high-voltage box 102 and the low-voltage box 103. The partition plate 200 is hollow inside and open on both sides. A negative pressure suction hole 201 communicating with the high-voltage box 102 is provided at the bottom of the partition plate 200 facing the high-voltage box 102. A heat dissipation assembly 300 is installed on one side of the box assembly 100. The heat dissipation assembly 300 creates a negative pressure inside the partition plate 200, drawing hot air from inside the low-voltage box 103 into the partition plate 200 through the air outlet 301. The air inside the high-voltage box 102 is drawn into the partition plate 200 and discharged uniformly. In this embodiment, the heat dissipation component 300 and the negative pressure suction hole 201 are used to dissipate heat from the low-voltage box 103 and the high-voltage box 102. The negative pressure suction hole 201 draws the air inside the high-voltage box 102 into the partition plate 200 and discharges it in the same way. The heat of the two boxes does not affect each other, resulting in better heat dissipation.

[0025] To achieve the goal of simultaneously cooling both the high-voltage enclosure 102 and the low-voltage enclosure 103 using a single heat dissipation component 300, the specific structure can be as follows: Figure 4 as well as Figure 5In the embodiment shown, the heat dissipation assembly 300 includes an air outlet duct 301, a filter plate 302, and a cooling fan 303. An opening is provided on the outer wall of the low-voltage electrical enclosure 103 near the bottom. One end of the air outlet duct 301 is detachably connected to the opening on the low-voltage electrical enclosure 103, and the other end of the air outlet duct 301 is detachably connected to an opening on one side of the partition plate 200. The cooling fan 303 is detachably connected to the hollow interior of the partition plate 200, and blows air towards the opening of the partition plate 200 away from the air outlet duct 301. A through-slot 203 is provided on the partition plate 200, and the through-slot 203 connects to both the high-voltage electrical enclosure 102 and the low-voltage electrical enclosure. The hollow back of body 103 is connected, and filter screen 302 is detachably connected to the end of air outlet 301 near the weak current box 103. In this embodiment, when dissipating heat, cooling fan 303 starts to form negative pressure inside partition plate 200, drawing hot air from inside weak current box 103 into partition plate 200 through air outlet 301. At this time, negative pressure is generated at negative pressure suction hole 201 to draw hot air from inside strong current box 102 into partition plate 200 and discharge it uniformly. Filter screen 302 can prevent dust inside weak current box 103 from contacting cooling fan 303. After long-term use, filter screen 302 can be removed for cleaning.

[0026] Because the low-voltage components are installed inside the upper low-voltage box 103, operation during maintenance is extremely inconvenient. To facilitate easier replacement of the low-voltage components on the mounting bracket 105 during maintenance, the specific structure can be as follows: Figure 2 as well as Figure 6In the illustrated embodiment, a mounting bracket 105 is installed inside the low-voltage electrical enclosure 103. A moving component is also installed inside the low-voltage electrical enclosure 103. The moving component allows the mounting bracket 105 to move to the front of the low-voltage electrical enclosure 103 and downwards, positioning the mounting bracket 105 at a lower position outside the enclosure assembly 100. The moving component includes a vertical slide rail 401 and a horizontal slide rail 402. The vertical slide rail 401 is symmetrically and detachably connected to the bottom inner side of the low-voltage electrical enclosure 103. The horizontal slide rail 402 is symmetrically and slidably connected to the inside of the vertical slide rail 401. Sliding blocks are fixedly connected to the outer walls on both sides of the mounting bracket 105, and these sliding blocks are slidably connected to the inside of the adjacent horizontal slide rail 402. In this embodiment, when repairing the low-voltage electrical components on the mounting bracket 105, the first... First, disconnect the connection line between the low-voltage components and the outside. Pull the mounting bracket 105 outward, causing the horizontal slide rail 402 to move outward along the length of the vertical slide rail 401 until the front end of the horizontal slide rail 402 is fully extended from the bottom of the inner side of the low-voltage box 103. At this time, the mounting bracket 105 moves the horizontal slide rail 402 downward along the length of the vertical slide rail 401 by gravity, so that the mounting bracket 105 is located at a lower position outside the box assembly 100, which makes it easier to repair and replace the low-voltage components. After the repair is completed, push the mounting bracket 105 upward, causing the horizontal slide rail 402 to move upward along the vertical slide rail 401 until the horizontal slide rail 402 is fully retracted into the vertical slide rail 401. Then push the mounting bracket 105 inward into the low-voltage box 103.

[0027] Because the mounting bracket 105 is quite heavy after the components are installed, it needs to be slowly lowered by maintenance personnel during maintenance, which increases the difficulty of maintenance. To enable the mounting bracket 105 to descend slowly, a specific structure can be adopted as follows: Figure 6 as well as Figure 7 In the embodiment shown, a slow-descent assembly is installed on the vertical slide rail 401. The slow-descent assembly enables the mounting frame 105 to descend slowly. The slow-descent assembly includes a steel wire traction rope 403, guide wheels 405, guide fixing rings 406, and counterweights 404. One end of the steel wire traction rope 403 is detachably connected to the upper end of the horizontal slide rail 402 located inside the vertical slide rail 401. The guide wheels 405 are rotatably connected to both sides inside the low-voltage box 103, and the steel wire traction ropes 403 on both sides are in contact with the outer wall of the guide wheels 405. The steel wire traction ropes 403 on both sides are detachably connected to the counterweight 404. The outer walls of the vertical slide rails 401 on both sides are detachably connected to the guide fixing rings 406. The steel wire traction ropes 403 pass through the guide fixing rings 406. In this embodiment, the counterweight 404 can be set to make the mounting frame 105 descend slowly when it moves downward, and reduce the maintenance difficulty for maintenance personnel when resetting. In addition, the counterweight 404 can be replaced with different counterweights according to the weight of the weak current components.

[0028] During maintenance, the mounting bracket 105 descends, relying on the transverse slide rail 402 for support. Prolonged use can cause the transverse slide rail 402 to bend and become unable to return to its original position. To ensure support for the mounting bracket 105 during descent, a specific structure can be adopted as follows: Figure 7 as well as Figure 9 In the embodiment shown, the bottom two sides of the mounting frame 105 are rotatably connected to the rotating shafts 505, and the outer walls of the rotating shafts 505 on both sides are fixedly connected to the support legs 504. When the mounting frame 105 is lowered, the support legs 504 naturally hang down and contact the ground under the action of gravity. In this embodiment, the auxiliary support of the support legs 504 can prevent the transverse slide rail 402 from deforming under the load, and make it more stable during maintenance.

[0029] To prevent the mounting bracket 105 from shifting outwards and pulling on the wires during use, the specific structure can be as follows: Figure 8 In the illustrated embodiment, a locking component 500 is installed on the outer wall of the partition 200. The locking component 500 fixes the position of the mounting bracket 105. The locking component 500 includes a return spring 501, a blocking plate 502, and a connecting plate 503. Sliding grooves 202 are provided on both sides of the outer wall of the partition 200. The return springs 501 are symmetrically arranged on the inner bottom of the sliding grooves 202 on both sides. The blocking plates 502 are slidably connected to the inside of the sliding grooves 202. The connecting plate 503 is fixedly connected to the blocking plates 502 on both sides. When the mounting bracket 105 is located inside the low-voltage box 103, the blocking plates 502 on both sides abut against the ends of the support legs 504 on both sides. In this embodiment, the return spring 501 causes the blocking plates 502 to move upward and abut against the support legs 504 under normal conditions, thereby fixing the mounting bracket 105. When it is necessary to move the mounting bracket 105, pressing down the connecting plate 503 will cause the blocking plates 502 on both sides to move downward, releasing the restriction and allowing the mounting bracket 105 to move normally.

[0030] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted herein.

Claims

1. A layered, isolated integrated power distribution box for strong and weak current circuits, comprising a box assembly (100), the box assembly (100) including a strong current box (102) and a weak current box (103), a rotating box door (101) rotatably connected to the outside of the box assembly (100), a bottom air inlet (107) communicating with the interior of the strong current box (102) is provided on the outer wall near the bottom, and a rain guide box top (104) is fixedly connected to the top of the weak current box (103), and a top air inlet (106) communicating with the interior of the weak current box (103) is provided at the bottom of the outer edge of the rain guide box top (104), characterized in that, A partition plate (200) is fixedly connected between the high-voltage box (102) and the low-voltage box (103). The partition plate (200) is hollow inside and open on both sides. A negative pressure air intake hole (201) communicating with the high-voltage box (102) is provided at the bottom of the partition plate (200) facing the high-voltage box (102). A heat dissipation assembly (300) is installed on one side of the box assembly (100). The heat dissipation assembly (300) creates a negative pressure inside the partition plate (200), so that the negative pressure air intake hole (201) draws air from inside the high-voltage box (102) into the partition plate (200) and discharges it out. The heat dissipation component (300) includes an air outlet channel (301), a filter plate (302), and a cooling fan (303). The low-voltage box (103) has an opening on one side of its outer wall near the bottom. One end of the air outlet channel (301) is detachably connected to the opening on the low-voltage box (103), and the other end of the air outlet channel (301) is detachably connected to one side opening of the partition plate (200). The cooling fan (303) is detachably connected to the hollow part inside the partition plate (200), and the cooling fan (303) blows air towards the opening of the partition plate (200) away from the air outlet channel (301).

2. The layered isolation integrated power distribution box for strong and weak current as described in claim 1, characterized in that, The low-voltage box (103) has a mounting bracket (105) installed inside. The low-voltage box (103) also has a moving component installed inside. The moving component allows the mounting bracket (105) to move to the front of the low-voltage box (103) and move downward, so that the mounting bracket (105) is located at a lower position outside the box assembly (100).

3. The layered isolation integrated power distribution box for strong and weak currents according to claim 2, characterized in that, The movable component includes a vertical slide rail (401) and a horizontal slide rail (402). The vertical slide rail (401) is symmetrically and detachably connected to the bottom of the inner side of the low-voltage box (103). The horizontal slide rail (402) is symmetrically and slidably connected to the inside of the vertical slide rail (401). Sliding blocks are fixedly connected to the outer walls on both sides of the mounting bracket (105). The sliding blocks are slidably connected to the inside of the adjacent horizontal slide rail (402).

4. The layered isolation integrated power distribution box for strong and weak current as described in claim 3, characterized in that, A slow-descent assembly is installed on the vertical slide rail (401), which enables the mounting bracket (105) to descend slowly.

5. The layered isolation integrated power distribution box for strong and weak current as described in claim 4, characterized in that, The slow-descent assembly includes a steel wire traction rope (403), a guide wheel (405), a guide fixing ring (406), and a counterweight (404). One end of the steel wire traction rope (403) is detachably connected to the upper end of the horizontal slide rail (402) inside the vertical slide rail (401). The guide wheel (405) is rotatably connected to both sides inside the low-voltage box (103). The steel wire traction ropes (403) on both sides are attached to the outer wall of the guide wheel (405) and hang down. The ends of the steel wire traction ropes (403) on both sides are detachably connected to the counterweight (404). The outer walls of the vertical slide rails (401) on both sides are detachably connected to the guide fixing rings (406). The steel wire traction rope (403) passes through the guide fixing rings (406).

6. The layered isolation integrated power distribution box for strong and weak currents according to claim 2, characterized in that, The bottom sides of the mounting bracket (105) are rotatably connected to rotating shafts (505), and the outer walls of the rotating shafts (505) on both sides are fixedly connected to support legs (504). When the mounting bracket (105) descends, the support legs (504) naturally hang down and contact the ground under the action of gravity.

7. The layered isolation integrated power distribution box for strong and weak current as described in claim 6, characterized in that, The outer wall of the partition (200) is fitted with a locking component (500) that fixes the position of the mounting bracket (105).

8. The layered isolation integrated power distribution box for strong and weak current as described in claim 7, characterized in that, The locking assembly (500) includes a return spring (501), a blocking plate (502), and a connecting plate (503). The outer walls of the partition plate (200) are provided with sliding grooves (202). The return spring (501) is symmetrically arranged at the bottom of the inner side of the sliding grooves (202) on both sides. The blocking plate (502) is slidably connected to the inside of the sliding groove (202). The connecting plate (503) is fixedly connected to the blocking plates (502) on both sides. When the mounting bracket (105) is located inside the low-voltage box (103), the blocking plates (502) on both sides abut against the ends of the support legs (504) on both sides.

9. The layered isolation integrated power distribution box for strong and weak current circuits according to claim 1, characterized in that, The back of the high-voltage box (102) and the low-voltage box (103) are provided with a hollow layer, and the partition plate (200) is provided with a through groove (203), which is connected to the hollow part of the back of the high-voltage box (102) and the low-voltage box (103).

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