A distribution box with multi-cabinet body and hot air supply

Abstract

The application discloses a power distribution box with multiple cabinet bodies and hot air feeding, and relates to the technical field of power distribution boxes.The power distribution box comprises multiple cabinet bodies, wherein the multiple cabinet bodies comprise a busbar cabinet and multiple frame outgoing line cabinets, the busbar cabinet and the multiple frame outgoing line cabinets are each provided with a cabinet frame and a rear side plate, the upper left and right rear sides of the multiple cabinet bodies are each fixedly connected with a winding machine through bolts, the inside of the busbar cabinet and the frame outgoing line cabinets is slidably provided with a moving frame, and the rear side of the busbar cabinet and the frame outgoing line cabinets is slidably provided with a counterweight column.The application forms linkage with the transmission structure of the winding rope, the counterweight column and the pull rope through the driving structure of the double-head motor, the transmission rod and the winding machine, and then cooperates with the guiding effect of the first and second guide pulleys and the fixed limiting of the hooks, so that the synchronous lifting of all the moving frames in the multiple cabinet bodies is realized, the hot air is uniformly fed in the whole domain of the multiple cabinet bodies, and the heat environment collaborative control capability of the multiple cabinet body power distribution box is improved.

Description

Technical Field

[0001] This invention relates to the field of distribution box technology, and in particular to a distribution box with multiple cabinets that supply hot air together. Background Technology

[0002] In power systems, distribution boxes, especially multi-cabinet distribution boxes installed outdoors or used in low-temperature workshops and high-latitude regions, often face challenges in low-temperature environments. The electronic components inside the distribution box, such as circuit breakers, relays, and transformers, continuously generate heat during operation. The low external temperature causes the air temperature inside the distribution box to drop rapidly, creating a temperature difference between the inside and outside. When the heat generated by the electronic components meets the low-temperature air inside the cabinet, water vapor in the air condenses. This water vapor easily adheres to the surface of the electronic components, terminals, and the insulation layer of the wiring, not only reducing the insulation performance of the electronic components and affecting signal transmission stability, but also potentially causing short circuits, corrosion and rust of metal parts. In severe cases, it can cause permanent damage to the electronic components, leading to distribution box malfunctions and shutdowns, and affecting the safe and stable operation of the power system.

[0003] To address the condensation problem inside distribution boxes in low-temperature environments, existing technologies primarily employ the method of supplying hot air into the cabinet to raise the internal temperature and reduce humidity. However, most existing hot air supply solutions rely on fixed ductwork structures, i.e., a centralized hot air blower is installed outside the distribution box, and hot air is then introduced into the cabinet through pre-installed ducts. This method has significant drawbacks. Firstly, the fixed location of the ducted air outlet means that the hot air can only concentrate on covering a localized area near the outlet, forming a hot spot, while areas far from the outlet are difficult to cover, creating low-temperature dead zones and resulting in significant heat stratification within the cabinet. Secondly, the air velocity and heat distribution of centralized ducted air supply are uneven. The hot spot temperature is excessively high, while the low-temperature area still faces the risk of condensation. The temperature difference between the two can reach several degrees Celsius or even higher. This drastic temperature difference can cause fatigue damage to electronic components due to frequent alternation of thermal expansion and contraction, shortening their service life. In addition, the ducted air supply structure also has problems such as limited layout, easy dust accumulation and blockage on the inner wall of the duct, high maintenance cost, and difficulty in achieving synchronous temperature control of each cabinet in multi-cabinet scenarios. It cannot fundamentally meet the usage requirements of multi-cabinet power distribution boxes for uniform temperature control and effective dehumidification in low-temperature environments. Therefore, it is necessary to design a power distribution box with multiple cabinets that can supply hot air together to solve the above-mentioned problems. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a distribution box with multiple cabinets for supplying hot air, comprising multiple cabinets, wherein the multiple cabinets include a bus tie cabinet and multiple frame outgoing cabinets, wherein the bus tie cabinet and multiple frame outgoing cabinets are arranged horizontally adjacent to each other; The bus tie cabinet and multiple frame outgoing cabinets are all equipped with cabinet frames and rear side panels. The upper left and right rear sides of the multiple cabinets are all fixedly connected to a winding machine by bolts. The inner rear left and right ends of the bus tie cabinet and the frame outgoing cabinet are both fixedly welded with first columns, and the outer sides of two adjacent first columns are slidably provided with movable frames. Both the bus tie cabinet and the frame outgoing cabinet are equipped with a second column on the rear side, and a counterweight column slides up and down on the outer side of the second column. Each of the winding devices is fixedly connected to a winding rope at its winding end. The bottom ends of the winding ropes are fixedly connected to the upper left and right ends of the counterweight column, respectively. Three pull ropes are fixedly connected to the upper part of each of the moving frames. Three first guide pulleys and three second guide pulleys are provided on the front side of each of the three pull ropes.

[0005] Preferably, a dual-head motor is fixedly connected to the rear side of the upper middle part of the multi-cabinet by bolts. The left and right ends of the dual-head motor are both fixedly connected to transmission rods, and the outer end of each transmission rod is fixedly connected to the shaft of the winding machine.

[0006] Preferably, the left and right ends of the front side of the mobile frame are provided with mounting slots, and a small hot air blower is engaged inside the mounting slots. The left and right ends of the small hot air blower are fixedly connected to the mounting plate by bolts, and the rear side of the mounting plate is fixedly connected to the front side of the mobile frame by bolts. A fixing plate is welded to the upper rear side of the rear side plate. The winding rope passes through the left and right sides of the fixing plate. The three first guide pulleys are all fixedly connected to the upper part of the rear side plate by bolts. The three second pulleys are all fixedly connected to the bottom of the fixing plate by bolts. The three pull ropes pass through the rear side plate and are guided by the first and second guide pulleys before being fixedly connected to the upper part of the counterweight column.

[0007] Preferably, a number of hooks are welded to the upper part of the mobile frame and the upper part of the counterweight column. The hooks on the upper part of the mobile frame and the first guide pulley fixed to the upper part of the rear side plate are distributed in an isosceles triangle. The hooks on the upper part of the counterweight column and the second guide pulley fixed to the bottom of the fixed plate are distributed in a straight line. Both ends of the pull rope are attached to the corresponding hooks.

[0008] Preferably, temperature and humidity sensors are fixedly installed at the four rear corners of the cabinet frame. Each temperature and humidity sensor is electrically connected to the small hot air blower. Each temperature and humidity sensor detects the temperature and humidity inside the corresponding bus tie cabinet or frame outgoing cabinet. When the detected temperature and humidity are lower than a preset threshold, the temperature and humidity sensor triggers the small hot air blower in the corresponding cabinet to start.

[0009] Preferably, supporting square steel is welded to both the left and right ends of the bottom of the fixing plate, and the upper ends of the second column are welded to the bottom of the fixing plate. The bottom ends of the supporting square steel and the second column are both fixedly connected to the ground, and the supporting square steel is also welded to the rear side of the corresponding rear side plate.

[0010] Preferably, both the pull rope and the winding rope are made of stainless steel wire rope, and the outer diameter of the pull rope is adapted to the width of the rope groove of the first guide pulley and the second guide pulley, and the outer diameter of the winding rope is adapted to the width of the winding groove of the winding machine.

[0011] In summary, the present invention provides a distribution box with multiple cabinets simultaneously supplying hot air, which has the following beneficial effects: Through the drive structure of a dual-head motor, transmission rod, and winding machine, and in conjunction with the transmission structure of the winding rope, counterweight column, and pull rope, and with the guiding action of the first and second guide pulleys and the fixed limit of the hook, the synchronous lifting and lowering of all moving frames in the multi-cabinet is achieved. Through the integrated linkage design of drive, transmission, guidance, and execution, the small hot air blowers in each bus tie cabinet and frame outgoing cabinet can move up and down synchronously along the first column, solving the problem of uneven local temperature and humidity caused by the single air outlet of the traditional distribution box, realizing uniform hot air supply throughout the multi-cabinet, and improving the thermal environment coordinated control capability of the multi-cabinet distribution box; the multi-cabinet adopts a modular layout of bus tie cabinet and multiple frame outgoing cabinets, taking into account the convenience of operation and maintenance and the equipment expandability, which can adapt to the power distribution needs in different scenarios and enhance the practical value of the equipment.

[0012] By electrically connecting the temperature and humidity sensors on the cabinet frame to the small hot air blower, and combining the linkage lifting structure of the moving frame and the counterweight column, a detection, triggering, and execution mechanism is formed. The temperature and humidity sensors accurately capture the temperature and humidity data of a single cabinet. When the temperature and humidity are lower than the preset threshold, the small hot air blower in the corresponding cabinet is automatically activated. At the same time, the drive structure is linked to lift the moving frame, ensuring that the hot air accurately covers all areas inside the cabinet. This single-point detection and whole-area execution structure not only avoids the energy waste caused by unified air supply to multiple cabinets, but also achieves targeted and precise control, balancing the intelligence level of the distribution box with the energy-saving requirements.

[0013] The robust support structure, composed of supporting square steel, fixed plates, and a second column, works in conjunction with the guide structure of the first column for the moving frame, providing a stable foundation for the transmission system. Simultaneously, the pull rope and winding rope are made of stainless steel wire rope and are sized to match the first and second guide pulleys and the winding machine. Combined with the dual structure of the mounting slot and mounting plate of the moving frame for engaging and bolting the small hot air blower, this ensures smooth transmission and structural stability while making the disassembly and assembly of the small hot air blower and maintenance of easily damaged components such as the pull rope more convenient. It balances the long-term reliability of the equipment with the convenience of later maintenance, extending the equipment's lifespan and reducing maintenance costs. This not only strengthens the connection rigidity between the multi-cabinet and the transmission mechanism but also effectively counteracts vibrations generated by the operation of the dual-head motor and the sliding of the moving frame. It provides a stable installation benchmark for transmission components such as the winding machine, the first and second guide pulleys, ensuring that the pull rope and winding rope do not deviate or wobble during transmission, further guaranteeing the synchronization accuracy and operational stability of the multi-cabinet air supply. Attached Figure Description

[0014] Figure 1 This is a front three-dimensional structural diagram of a power distribution box with multiple cabinets connected to deliver hot air according to the present invention. Figure 2 This is a schematic diagram of the rear three-dimensional structure of a power distribution box with multiple cabinets connected to deliver hot air according to the present invention. Figure 3 This is a schematic diagram of the internal structure of a power distribution box with multiple cabinets connected to deliver hot air according to the present invention; Figure 4 This is a schematic diagram of the rear panel, first column, and movable frame of a power distribution box with multiple cabinets supplying hot air in accordance with the present invention. Figure 5 This is a schematic diagram of the rear panel, second column, and counterweight column of a power distribution box with multiple cabinets supplying hot air according to the present invention. Figure 6 This is a schematic diagram of the transmission structure of a power distribution box with multiple cabinets connected to deliver hot air according to the present invention. Figure 7 This is a schematic diagram of a mobile frame structure for a power distribution box with multiple cabinets that simultaneously supply hot air, according to the present invention. Figure 8 This is an enlarged schematic diagram of point A of a power distribution box with multiple cabinets connected to deliver hot air according to the present invention; Figure 9 This is an enlarged schematic diagram of section B of a power distribution box with multiple cabinets connected to deliver hot air according to the present invention. Figure 10 This is an enlarged schematic diagram of the structure at point C of a power distribution box with multiple cabinets supplying hot air in accordance with the present invention.

[0015] Explanation of reference numerals in the attached figures: 1. Multi-cabinet; 101. Busbar cabinet; 102. Framed outgoing cabinet; 2. Cabinet frame; 3. Rear panel; 4. First upright; 5. Movable frame; 501. Mounting slot; 502. Small hot air blower; 503. Mounting plate; 6. Second upright; 7. Counterweight column; 8. Dual-head motor; 9. Transmission rod; 10. Winding machine; 11. Pull rope; 12. Winding rope; 13. Fixing plate; 14. First guide pulley; 15. Second guide pulley; 16. Supporting square steel; 17. Temperature and humidity sensor; 18. Hook. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1 - Appendix Figure 10 This application will be described in further detail below. Example

[0017] Please see Figures 1-10 As shown, the present invention provides a technical solution: a distribution box with multiple cabinets for simultaneous hot air supply, including multiple cabinets 1, each cabinet 1 including a bus tie cabinet 101 and multiple frame outgoing cabinets 102. The bus tie cabinet 101 and the multiple frame outgoing cabinets 102 are arranged horizontally adjacent to each other. The horizontal adjacent arrangement of the bus tie cabinet 101 and the multiple frame outgoing cabinets 102 is compact and regular, which saves installation space and provides a basic layout guarantee for the synchronous hot air supply of multiple cabinets, and facilitates the coordinated control of the thermal environment between each cabinet. The busbar cabinet 101 and multiple frame outgoing cabinets 102 are all equipped with cabinet frames 2 and rear side panels 3. The upper left and right rear sides of the multiple cabinets 1 are all fixedly connected to the winding machine 10 by bolts. The cabinet frame 2 provides stable support for each cabinet, and the rear side panel 3 ensures the cabinet's sealing. The winding machine 10 is reliably connected by bolts and is easy to disassemble and assemble, providing a stable power support point for the subsequent lifting of the counterweight column 7 and the linkage of the moving frame 5. The rear left and right sides of the internal rear side of the bus connector cabinet 101 and the frame outgoing cabinet 102 are both fixedly welded with first columns 4. The outer sides of two adjacent first columns 4 are slidably provided with movable frames 5. The first columns 4 are fixedly welded, which is stable and has high guiding accuracy, providing a precise sliding trajectory for the movable frames 5. The movable frames 5 can slide up and down, which can drive the small hot air blower 502 to deliver hot air at different height positions in the cabinet, effectively avoiding the problem of uneven local temperature. Both the motherboard cabinet 101 and the frame outgoing cabinet 102 are equipped with a second column 6 on the rear side. The outer side of the second column 6 has a counterweight column 7 that slides up and down. The second column 6 provides a stable sliding guide for the counterweight column 7. The counterweight column 7 can balance the tension of the pull rope 11, making the lifting process of the mobile frame 5 more stable, avoiding sliding jamming caused by unilateral force, and ensuring the synchronization of multi-cabinet linkage hot air supply. Both winding devices 10 have winding ropes 12 fixedly connected to their winding ends. The bottom ends of the winding ropes 12 are fixedly connected to the upper left and right ends of the counterweight column 7, respectively. Three pull ropes 11 are fixedly connected to the upper part of the movable frame 5. Three first guide pulleys 14 and three second guide pulleys 15 are provided on the front side of each of the three pull ropes 11. The arrangement of the three pull ropes 11 makes the movable frame 5 bear force evenly. Combined with the guiding effect of the first guide pulleys 14 and the second guide pulleys 15, the counterweight column 7 and the movable frame 5 are synchronized, ensuring that the lifting rhythm of each movable frame 5 in the multi-cabinet 1 is consistent, thereby ensuring the uniformity and synchronization of the hot air supply to each cabinet.

[0018] A dual-head motor 8 is bolted to the upper middle rear side of the multi-cabinet 1. The left and right shafts of the dual-head motor 8 are both fixedly connected to transmission rods 9. The outer end of the transmission rod 9 is fixedly connected to the shaft of the winding machine 10. The dual-head motor 8 drives the two winding machines 10 to operate synchronously through the transmission rods 9, ensuring that the winding and unwinding speeds of the two winding machines 10 are consistent. This avoids the counterweight column 7 from tilting due to the difference in winding speed on one side, ensuring the stability of the multi-cabinet 1's linkage hot air delivery. The bolt fixing method also facilitates equipment installation and maintenance. A fixing plate 13 is welded to the upper rear side of the rear side plate 3. The winding rope 12 passes through the left and right sides of the fixing plate 13 respectively. Three first guide pulleys 14 are all fixedly connected to the upper part of the rear side plate 3 by bolts, and three second pulleys 15 are all fixedly connected to the bottom of the fixing plate 13 by bolts. Three pull ropes 11 pass through the rear side plate 3, are guided by the first guide pulleys 14 and the second guide pulleys 15, and are then fixedly connected to the upper part of the counterweight column 7. The fixing plate 13 is welded to enhance the structural stability and serves as the winding rope 12. Provides reliable support points, and the winding device 10 drives the counterweight column 7 to rise and fall synchronously through the winding rope 12, realizing the unified linkage of the moving frame 5 in multiple cabinets 1, ensuring the consistency of the hot air delivery action of each cabinet. The first guide pulley 14 and the second guide pulley 15 are firmly connected by bolts, which can effectively change the force direction of the pull rope 11, reduce the friction loss between the pull rope 11 and the rear side plate 3 and the fixed plate 13, extend the service life of the pull rope 11, and at the same time ensure the transmission efficiency of the pull rope 11, ensuring that the moving frame 5 responds in a timely manner.

[0019] The mobile frame 5 has mounting slots 501 on both the left and right sides of its front side. Small hot air blowers 502 are fitted inside the mounting slots 501. Mounting plates 503 are fixed to the left and right sides of the small hot air blowers 502 by bolts. The rear side of the mounting plates 503 is fixed to the front side of the mobile frame 5 by bolts. The mounting slots 501 serve to pre-position the small hot air blowers 502. The mounting plates 503 are fixed by bolts to ensure that the small hot air blowers 502 are installed firmly, preventing the hot air blowers from loosening or shifting during the lifting and lowering of the mobile frame 5. At the same time, the dual design of locking and bolt fixing facilitates the disassembly, maintenance and replacement of the small hot air blowers 502, ensuring the continuous and stable hot air delivery function.

[0020] Several hooks 18 are welded to the upper part of the movable frame 5 and the upper part of the counterweight column 7. The hooks 18 on the upper part of the movable frame 5 and the first guide pulley 14 fixed on the upper part of the rear side plate 3 are distributed in an isosceles triangle. The hooks 18 on the upper part of the counterweight column 7 and the second guide pulley 15 fixed on the bottom of the fixed plate 13 are distributed in a straight line. Both ends of the pull rope 11 are tied to the corresponding hooks 18. The hooks 18 are welded and fixed to a reliable connection. The isosceles triangle distribution of the hooks 18 on the moving frame 5 and the first guide pulley 14 ensures that the pull force of the pull rope 11 on the moving frame 5 is balanced, preventing the moving frame 5 from deviating when sliding. The straight-line distribution of the hooks 18 on the counterweight column 7 and the second guide pulley 15 ensures that the transmission direction of the pull rope 11 is accurate, further improving the stability of the lifting and lowering of the moving frame 5.

[0021] Temperature and humidity sensors 17 are fixedly installed at the four rear corners of the cabinet frame 2. Each temperature and humidity sensor 17 is electrically connected to a small hot air blower 502. Each temperature and humidity sensor 17 detects the temperature and humidity inside the corresponding bus tie cabinet 101 or frame outgoing cabinet 102. When the detected temperature and humidity are lower than the preset threshold, the temperature and humidity sensor 17 triggers the small hot air blower 502 in the corresponding cabinet to start. The temperature and humidity sensors 17 at the four rear corners of the cabinet frame 2 can comprehensively detect the temperature and humidity inside the cabinet, avoiding blind spots in local detection. Through electrical connection with the small hot air blower 502, automatic temperature and humidity monitoring and automatic start and stop of the hot air blower are realized without manual intervention, improving the intelligence level of the equipment. At the same time, the hot air blower in the corresponding cabinet is triggered in a targeted manner, saving energy and accurately maintaining a suitable temperature and humidity environment in each cabinet.

[0022] Supporting square steel 16 is welded to both the bottom left and right ends of the fixed plate 13, and the upper end of the second column 6 is welded to the bottom of the fixed plate 13. The supporting square steel 16 and the second column 6 together provide double support for the fixed plate 13. The welding and fixing method ensures that the support structure is stable and avoids the fixed plate 13 from deforming due to the load, thus providing a stable installation foundation for the transmission mechanism. The bottom ends of the supporting square steel 16 and the second column 6 are both fixedly connected to the ground. The supporting square steel 16 is also welded to the rear side of the corresponding rear side plate 3. The bottom ends of the supporting square steel 16 and the second column 6 are fixed to the ground, which enhances the overall structure's resistance to tipping. The welding connection between the supporting square steel 16 and the rear side plate 3 further improves the connection between the multi-cabinet 1 and the supporting structure, ensuring the long-term stability of the equipment.

[0023] Both the pull rope 11 and the winding rope 12 are made of stainless steel wire rope. The outer diameter of the pull rope 11 is matched with the width of the rope groove of the first guide pulley 14 and the second guide pulley 15, and the outer diameter of the winding rope 12 is matched with the width of the winding groove of the winding machine 10. The stainless steel wire rope has the characteristics of high strength, corrosion resistance and wear resistance, which extends the service life of the pull rope 11 and the winding rope 12. The matching of the pull rope 11 with the width of the guide pulley rope groove and the matching of the winding rope 12 with the width of the winding groove of the winding machine 10 prevent the rope from derailing or getting stuck during the transmission process, ensure smooth transmission, and improve the reliability of the simultaneous hot air supply of multiple cabinets.

[0024] Please see Figures 1-10 As shown, the installation and working principle are as follows: The bottom ends of the supporting square steel 16 and the second column 6 are fixedly connected to the ground at the preset installation position. Then, the fixing plate 13 is welded to the upper end of the supporting square steel 16. At the same time, it is ensured that the upper end of the second column 6 is welded and fixed to the bottom of the fixing plate 13, and the supporting square steel 16 is aligned with the corresponding welding position of the rear side plate 3 to be installed later. The bus tie cabinet 101 and multiple frame outgoing cabinets 102 are arranged in a horizontally adjacent manner on the front side of the support structure. The cabinet frame 2 of each cabinet is assembled and fixed with the rear side panel 3. At the same time, the rear side of the rear side panel 3 is welded firmly to the supporting square steel 16 to complete the overall splicing of multiple cabinets 1. Inside the rear left and right sides of the bus tie cabinet 101 and each frame outgoing cabinet 102, the first upright column 4 is welded and fixed. Then, the movable frame 5 is slidably sleeved on the outside of the two adjacent first upright columns 4. The smoothness of the up and down sliding of the movable frame 5 is adjusted to ensure that there is no jamming. The small hot air blower 502 is correspondingly engaged in the mounting slot 501 on the front side of the movable frame 5. The left and right ends of the small hot air blower 502 are bolted to the movable frame 5 using the mounting plate 503 to ensure that the small hot air blower 502 is installed firmly and the air outlet faces the inside of the cabinet. Three first guide pulleys 14 are bolted to the upper front side of the rear side plate 3, and several second guide pulleys 15 are bolted at equal intervals to the bottom of the fixed plate 13. At the same time, hooks 18 are welded to the corresponding positions on the upper part of the moving frame 5 and the counterweight column 7. The two ends of the pull rope 11 are tied to the corresponding hooks 18 of the moving frame 5 and the counterweight column 7 respectively, so that the pull rope 11 passes through the preset rope hole of the rear side plate 3 and is guided by the first guide pulley 14 and the second guide pulley 15 in sequence, ensuring that the pull rope 11 is arranged neatly and without tangling. A double-head motor 8 is bolted to the rear side of the middle of the upper part of the multi-cabinet 1. The two ends of the transmission rod 9 are fixedly connected to the left and right end shafts of the double-head motor 8 and the shaft of the winding machine 10, respectively. Then, the two winding machines 10 are bolted to the rear side of the left and right parts of the upper part of the multi-cabinet 1. One end of the winding rope 12 is fixed to the winding end of the winding machine 10, and the other end is passed through the preset through hole of the fixing plate 13 and fixedly connected to the upper left and right ends of the counterweight column 7. The operation of the double-head motor 8 is adjusted to ensure that the counterweight column 7 can slide smoothly up and down along the second column 6 when the winding machine 10 winds up and unwinds the winding rope 12. Temperature and humidity sensors 17 are fixedly installed at the four rear corners of the cabinet frame 2 of each cabinet, and the temperature and humidity sensors 17 are electrically connected to the small hot air blower 502 in the corresponding cabinet. The signal transmission stability is adjusted and the preset temperature and humidity thresholds are set. Connect the power supply of the distribution box, start the dual-head motor 8 and the small hot air blower 502 for trial operation, and test the synchronicity of the moving frame 5 rising and falling with the counterweight column 7, the air output effect of the hot air blower, and the trigger sensitivity of the temperature and humidity sensor 17. During use, the temperature and humidity sensor 17 detects the temperature and humidity inside the cabinet in real time. When it is lower than the preset threshold, it triggers the corresponding small hot air blower 502 to start. At the same time, the dual-head motor 8 drives the winding machine 10 to operate, and drives the moving frame 5 to move up and down through the pull rope 11 to achieve the uniform hot air delivery to multiple cabinets.

[0025] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A distribution box with multiple cabinets for simultaneous hot air supply, comprising multiple cabinets (1), characterized in that: The multi-cabinet (1) includes a bus tie cabinet (101) and multiple frame outgoing cabinets (102), which are arranged horizontally adjacent to each other. The bus connector cabinet (101) and multiple frame outlet cabinets (102) are all equipped with cabinet frames (2) and rear side panels (3). The upper left and right rear sides of the multiple cabinets (1) are all fixedly connected to a winding machine (10) by bolts. The rear left and right ends of the bus connector cabinet (101) and the frame outgoing cabinet (102) are both fixedly welded with first columns (4), and the outer sides of two adjacent first columns (4) are slidably provided with movable frames (5). The rear side of both the bus connector cabinet (101) and the frame outgoing cabinet (102) is provided with a second column (6), and a counterweight column (7) slides up and down on the outer side of the second column (6). Both winding ends of the two winding machines (10) are fixedly connected with winding ropes (12). The bottom ends of the winding ropes (12) are fixedly connected to the upper left and right ends of the counterweight column (7). The upper part of the moving frame (5) is fixedly connected with three pull ropes (11). The upper front side of the three pull ropes (11) is provided with three first guide pulleys (14), and the upper rear side of the three pull ropes (11) is provided with three second guide pulleys (15). A double-headed motor (8) is fixedly connected to the rear side of the upper middle part of the multi-cabinet (1) by bolts. The left and right ends of the double-headed motor (8) are fixedly connected to the transmission rod (9). The outer end of the transmission rod (9) is fixedly connected to the shaft of the winding machine (10). A fixing plate (13) is welded to the upper rear side of the rear side plate (3). The winding rope (12) passes through the left and right sides of the fixing plate (13). The three first guide pulleys (14) are all fixedly connected to the upper part of the rear side plate (3) by bolts. The three second guide pulleys (15) are all fixedly connected to the bottom of the fixing plate (13) by bolts. The three pull ropes (11) pass through the rear side plate (3) and are guided by the first guide pulleys (14) and the second guide pulleys (15) and then fixedly connected to the upper part of the counterweight column (7). The front left and right ends of the mobile frame (5) are provided with mounting slots (501), and small hot air blowers (502) are fitted inside the mounting slots (501). The left and right ends of the small hot air blowers (502) are fixedly connected to mounting plates (503) by bolts. The rear side of the mounting plates (503) is fixedly connected to the front side of the mobile frame (5) by bolts.

2. A distribution box with multiple cabinets simultaneously supplying hot air according to claim 1, characterized in that: Several hooks (18) are welded to the upper part of the mobile frame (5) and the upper part of the counterweight column (7). The hooks (18) on the upper part of the mobile frame (5) and the first guide pulley (14) fixed on the upper part of the rear side plate (3) are distributed in an isosceles triangle. The hooks (18) on the upper part of the counterweight column (7) and the second guide pulley (15) fixed on the bottom of the fixed plate (13) are distributed in a straight line. Both ends of the pull rope (11) are attached to the corresponding hooks (18).

3. A distribution box with multiple cabinets simultaneously supplying hot air according to claim 1, characterized in that: Temperature and humidity sensors (17) are fixedly installed at the four rear corners of the cabinet frame (2). The temperature and humidity sensors (17) are electrically connected to the small hot air blower (502). Each temperature and humidity sensor (17) detects the temperature and humidity inside the bus tie cabinet (101) or the frame outgoing cabinet (102). When the detected temperature and humidity are lower than the preset threshold, the temperature and humidity sensor (17) triggers the small hot air blower (502) in the corresponding cabinet to start.

4. A distribution box with multiple cabinets simultaneously supplying hot air according to claim 1, characterized in that: Supporting square steel (16) is welded to the bottom left and right ends of the fixed plate (13), and the upper ends of the second column (6) are welded to the bottom of the fixed plate (13). The bottom ends of the supporting square steel (16) and the second column (6) are both fixedly connected to the ground, and the supporting square steel (16) is also welded to the rear side of the corresponding rear side plate (3).

5. A distribution box with multiple cabinets simultaneously supplying hot air according to claim 1, characterized in that: Both the pull rope (11) and the winding rope (12) are made of stainless steel wire rope, and the outer diameter of the pull rope (11) is adapted to the width of the rope groove of the first guide pulley (14) and the second guide pulley (15), and the outer diameter of the winding rope (12) is adapted to the width of the winding groove of the winding machine (10).

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