A power distribution cabinet with auxiliary ventilation structure

Abstract

This invention belongs to the field of power distribution cabinet technology, and particularly relates to a power distribution cabinet with an auxiliary ventilation structure, comprising: a cabinet body, with symmetrical baffles on its top, a connecting frame installed between the two baffles, and a top plate hinged to the bottom two sides of the connecting frame via a rotating sealing assembly; a heat dissipation mechanism, including two sets of exhaust holes and two sets of air inlets symmetrically opened on the top of the cabinet body and communicating with the inner cavity of the cabinet, with air guide covers slidably connected to each set of exhaust holes and each set of air inlets, and an exhaust fan and an exhaust fan respectively installed in the air guide covers corresponding to the exhaust holes and air inlets. This invention can drive the air guide covers to slide, linking the top plate and the cover to adaptively open and close, realizing a dual-mode switching between active ventilation and sealed heat conduction, adapting to both sunny and rainy weather conditions, balancing heat dissipation and dust and moisture prevention performance, and simultaneously and automatically cleaning the heat dissipation plate to avoid dust accumulation affecting performance.

Description

Technical Field

[0001] This invention belongs to the field of power distribution cabinet technology, and particularly relates to a power distribution cabinet with an auxiliary ventilation structure. Background Technology

[0002] As a core infrastructure device in power transmission and distribution and electrical control systems, distribution cabinets are widely used in many fields such as industrial production, building power distribution, and municipal power. They are mainly used to integrate and install various electrical components such as circuit breakers, contactors, and relays to realize power distribution, control, and protection. During long-term operation, electrical components continuously generate a large amount of heat. If the heat inside the cabinet cannot be dissipated in a timely and efficient manner, the internal temperature of the cabinet will continue to rise. This will not only accelerate the aging of electrical components and reduce the service life of the equipment, but also easily cause power failures such as short circuits, overloads, and tripping. In severe cases, it may even cause equipment burnout and circuit paralysis, posing a great safety hazard. Therefore, ventilation and heat dissipation structure is a key structure to ensure the stable and safe operation of distribution cabinets.

[0003] Currently, the ventilation and heat dissipation structure design of existing power distribution cabinets is relatively traditional, mostly adopting a structure with fixed ventilation holes and fixed cooling fans. This can only achieve basic passive ventilation and heat dissipation functions and has many shortcomings. For example, traditional ventilation structures lack self-adaptive opening and closing and sealing mechanisms, and the ventilation holes are mostly in a normally open state. In rainy weather, external moisture and humidity can easily enter the cabinet through the ventilation holes, causing internal electrical components to become damp, oxidized, and corroded, significantly reducing the operational stability and service life of the equipment. If a completely closed structure is used to achieve moisture-proof sealing, the heat inside the cabinet cannot be dissipated in time, leading to heat dissipation failure and component overheating. It is difficult to simultaneously meet the dual core requirements of efficient heat dissipation and moisture-proof sealing.

[0004] There is an urgent need for improvement, so we propose a power distribution cabinet with an auxiliary ventilation structure. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a power distribution cabinet with an auxiliary ventilation structure.

[0006] In view of this, the present invention provides a power distribution cabinet with an auxiliary ventilation structure, comprising: The cabinet has symmetrical baffles on its top, and a connecting frame is installed between the two baffles. The bottom sides of the connecting frame are hinged to the top plate by a rotating sealing assembly. The heat dissipation mechanism includes two sets of exhaust holes and two sets of air inlets symmetrically located on the top of the cabinet and communicating with the inner cavity of the cabinet. Each set of exhaust holes and each set of air inlets is slidably connected to an air guide cover. An exhaust fan and an exhaust fan are respectively installed in the air guide covers corresponding to the exhaust holes and air inlets. The end openings of the air guide covers are hinged to a cover through a rotating connection assembly. The top of the air guide covers is provided with a lifting assembly for opening and closing the top plate. A driving assembly is provided between each set of air guide covers for driving the two air guide covers to move synchronously towards each other or away from each other. A first transmission assembly is provided between the driving assembly and the rotating connection assembly. A heat conduction assembly is provided on the top plate.

[0007] Furthermore, it also includes a cleaning mechanism, which includes a cleaning component disposed on the surface of the top plate and a second transmission component disposed inside the connecting frame. The power end of the driving component is connected to the input end of the second transmission component, and the power output end of the second transmission component is connected to the cleaning component.

[0008] Furthermore, the rotating sealing assembly includes two arc-shaped plates symmetrically fixed to one end of the connecting frame near the top of the cabinet. Each arc-shaped plate is rotatably fitted with a connecting column, and one end of each of the two top plates is fixedly connected to the corresponding connecting column.

[0009] Furthermore, the lifting assembly includes a mounting base fixed to the top of each air guide hood, and a limiting frame fixed to the top plate and facing the corresponding mounting base. Each mounting base has a guide wheel rotatably mounted on its inner side, and each guide wheel is correspondingly rolled and assembled inside the limiting frame.

[0010] Furthermore, the drive assembly includes a dual-axis motor located at the center of the top of the cabinet, and a first rack symmetrically slidably mounted on the top of the cabinet via a limiting sliding part. The dual-axis motor is fixed between two baffles via a fixing bracket. One drive end of the dual-axis motor is fixed with a drive gear. The drive gear is located between the two first racks and meshes with both first racks simultaneously. The ends of the two first racks are fixedly connected to the side wall of the corresponding air guide hood via connecting rods.

[0011] Furthermore, the rotating connection assembly includes a rotating rod rotatably mounted on the inner side of the mounting base below the guide wheel. Two rotating rods on the same side pass through the mounting base at opposite ends and are fixedly connected to each other. An L-shaped connecting block is fixedly mounted on the rotating rod inside each mounting base, and the connecting block is fixedly connected to the top of the corresponding cover.

[0012] Furthermore, the first transmission assembly includes a rotating shaft fixed to one of the air guide covers on the same side, a first transmission gear rotatably mounted at the end of the rotating shaft, a second rack meshing below the first transmission gear, the second rack being fixed to the top of the cabinet, and a second transmission gear meshing with the first transmission gear being fixed on the rotating rod between the two mounting seats on the same side.

[0013] Furthermore, the heat-conducting assembly includes heat-conducting chambers opened inside each of the top plates. A heat dissipation plate is sealed and embedded on the surface of both top plates. The surface of the heat dissipation plate is coplanar with the surface of the opening and closing top plate. One end of the heat dissipation plate is connected to the inner cavity of the heat-conducting chamber, and the length of the heat dissipation plate is less than the length of the inner cavity of the heat-conducting chamber. A plurality of heat-conducting sheets are fixed at equal intervals at the end of the heat dissipation plate that extends into the heat-conducting chamber. The bottom end of each heat-conducting sheet is fixedly connected to the bottom of the inner cavity of the heat-conducting chamber. A first flexible tube connects the heat-conducting chambers on the two top plates. A second flexible tube is inserted through one end of each cover and communicates with the inner cavity of the corresponding air guide hood. The other end of the second flexible tube is connected to the inner cavity of the corresponding heat-conducting chamber on the side away from the first flexible tube.

[0014] Furthermore, the cleaning assembly includes mounting plates symmetrically slidably mounted on both sides of the surface of each of the top plates. A brush plate is fixed on the side of each mounting plate near the top plate. A first pin seat is fixed in the middle of the surface of each mounting plate. Second pin seats are symmetrically slidably mounted on the inner sides of the openings at both ends of the connecting frame. An arc-shaped rod is hinged between the first pin seat and the corresponding second pin seat on the same side through a pin shaft. A torsion spring for driving the arc-shaped rod to return to its original position is sleeved on the outer side of each pin shaft.

[0015] Furthermore, the second transmission assembly includes a bidirectional lead screw rotatably mounted between the two ends of the inner cavity of the connecting frame, and a worm gear fixed to the outer periphery of the middle part of the bidirectional lead screw. The other drive end of the dual-axis motor rotatably passes through the bottom end of the connecting frame and extends into the interior of the connecting frame, and is fixed with a worm gear meshing with the worm gear. The two sides of the bidirectional lead screw are symmetrically threaded with transmission plates, and the ends of each transmission plate are fixedly connected to the corresponding second pin seat.

[0016] The beneficial effects of this invention are: It can switch work positions by sliding the air guide hood through a dual-axis motor, and automatically open and close the top plate and cover. This enables the power distribution cabinet to switch between two modes: active ventilation and heat dissipation in sunny weather and closed heat conduction and heat dissipation in rainy weather. It can automatically adapt the heat dissipation and sealing status according to the operating conditions, effectively solving the shortcomings of poor adaptability of traditional power distribution cabinets. It takes into account both efficient heat dissipation and dust and moisture prevention requirements, eliminates problems such as high temperature heat accumulation and component aging, and ensures long-term stable and safe operation of the equipment. It can also form a passive heat conduction and heat dissipation system through the heat conduction chamber and heat conduction sheet inside the top plate and the exposed heat dissipation plate, forming a multi-heat dissipation mechanism with the active ventilation of the fan. It can dissipate heat autonomously in the closed state of the cabinet, and can also be washed by rain, effectively making up for the defects of traditional equipment's closed heat dissipation failure and single heat dissipation method, and comprehensively improving the heat dissipation capacity of the power distribution cabinet under all working conditions and in multiple environments. It is also possible to achieve linkage control of each component through a purely mechanical transmission structure. The sealing cover can be driven to open and close adaptively by sliding the air guide cover. No independent electric control is required. The transmission is synchronous and the operation is stable. It can also share a dual-axis motor as the power source for the cleaning mechanism, and complete the automated cleaning operation simultaneously during the opening and closing of the top plate. There is no need to add additional drive components, which simplifies the equipment structure, reduces energy consumption and cost, eliminates the need for manual disassembly and cleaning, and improves the convenience of equipment operation and maintenance and continuous operation performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a power distribution cabinet with an auxiliary ventilation structure proposed in this invention; Figure 2 This is a front view of the overall structure of a power distribution cabinet with an auxiliary ventilation structure proposed in this invention; Figure 3 This is a schematic diagram of the partial exploded structure of the top plate and the top of the cabinet of a power distribution cabinet with an auxiliary ventilation structure proposed in this invention; Figure 4 This is a schematic diagram of the drive assembly, first transmission assembly, and rotating connection assembly of a power distribution cabinet with an auxiliary ventilation structure proposed in this invention. Figure 5 This is a schematic diagram of the connection frame and cleaning mechanism structure of a power distribution cabinet with an auxiliary ventilation structure proposed in this invention; Figure 6 yes Figure 5 Enlarged view of point A in the image; Figure 7 This is a schematic diagram of the heat sink and top plate structure of a power distribution cabinet with an auxiliary ventilation structure proposed in this invention. Figure 8 This is a schematic diagram of the air guide cover, sealing cover and guide wheel structure of a power distribution cabinet with auxiliary ventilation structure proposed in this invention; Figure 9 This is a schematic diagram of the second transmission component structure of a power distribution cabinet with an auxiliary ventilation structure proposed in this invention; Figure 10 This is a front view of the top plate of a power distribution cabinet with an auxiliary ventilation structure proposed in this invention, in its closed state. Figure 11 This is a front view of the top plate of a power distribution cabinet with an auxiliary ventilation structure proposed in this invention, in the open state.

[0018] The markings in the diagram are as follows: 1. Cabinet body; 2. Baffle; 3. Connecting frame; 4. Top plate; 5. Heat dissipation plate; 6. Telescopic protective cover; 7. Second pin seat; 8. Arc rod; 9. First pin seat; 10. Mounting plate; 11. Brush plate; 12. Air guide cover; 13. Second flexible hose; 14. Limiting frame; 15. Arc plate; 16. Connecting column; 17. Dual-axis motor; 18. First flexible hose; 19. Drive gear; 20. First rack; 21. Exhaust port; 22. Cover; 23. Air inlet; 24. Torsion spring; 25. Connecting rod; 26. Buffer pad; 27. Mounting base; 28. Connecting block; 29. ​​Guide wheel; 30. Rotating rod; 31. Second transmission gear; 32. Rotating shaft; 33. First transmission gear; 34. Second rack; 35. Limiting groove; 36. Limiting block; 37. Worm gear; 38. Double-acting lead screw; 39. Worm wheel; 40. Transmission plate; 41. Exhaust fan; 42. Exhaust fan; 43. Filter screen; 44. Heat conduction chamber; 45. Heat conduction plate. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0020] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0021] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0022] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0023] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0024] Reference Figures 1 to 11 A power distribution cabinet with an auxiliary ventilation structure includes: Cabinet 1, with symmetrical baffles 2 on its top, and a connecting frame 3 installed between the two baffles 2. The bottom sides of the connecting frame 3 are hinged to a top plate 4 by a rotating sealing assembly. The heat dissipation mechanism includes two sets of exhaust holes 21 and two sets of air inlets 23 symmetrically located on the top of the cabinet 1 and communicating with the inner cavity of the cabinet 1. Each set of exhaust holes 21 and each set of air inlets 23 is slidably connected to an air guide shroud 12. An exhaust fan 42 and an exhaust fan 41 are respectively installed in the air guide shroud 12 corresponding to the exhaust holes 21 and the air inlets 23. Each set of exhaust holes 21 and each set of air inlets 23 is equipped with a filter screen 43, which can filter the dust when the top plate 4 is unfolded for heat dissipation. The end opening of the air guide shroud 12 is hinged to a cover 22 through a rotating connection assembly. The top of the air guide shroud 12 is provided with a lifting assembly for opening and closing the top plate 4. A driving assembly is provided between each set of air guide shroud 12 for driving the two sides of the air guide shroud 12 to move synchronously towards each other or away from each other. A first transmission assembly is provided between the driving assembly and the rotating connection assembly. A heat conduction assembly is provided on the top plate 4. It also includes a cleaning mechanism, which includes a sweeping component disposed on the surface of the top plate 4 and a second transmission component disposed inside the connecting frame 3. The power end of the drive component is connected to the input end of the second transmission component, and the power output end of the second transmission component is connected to the sweeping component.

[0025] This application utilizes a modular integrated structure of a hinged top plate 4 on the top of cabinet 1 and a sliding, adjustable air duct 12. Separate exhaust vents 21 and air inlets 23 are provided on the top of cabinet 1. Exhaust fans 42 and induced draft fans 41 are integrated inside the air duct 12 to form an active heat dissipation airflow channel. Simultaneously, multiple transmission components achieve integrated operation of the drive structure, the opening and closing structure of the cover 22, the heat conduction structure of the top plate 4, and the cleaning mechanism. This completely eliminates the single heat dissipation structure and working mode of traditional distribution cabinets with fixed ventilation holes and fixed fans. When the equipment is under high-load heat dissipation operation, the air duct 12 slides to the position corresponding to the outermost exhaust vent 21 and air inlet 23 on the top of cabinet 1, simultaneously opening the top plate 4 and cover 22, thus opening a complete air inlet and outlet channel. The active ventilation by the fans quickly removes the large amount of heat accumulated inside the cabinet, effectively preventing high temperatures inside the cabinet from causing heat buildup. To prevent electrical component aging, short circuits, tripping, and equipment burnout, and to ensure efficient heat dissipation under high load conditions, the air duct 12 slides to the corresponding position of the adjacent exhaust port 21 and air inlet port 23 during rainy weather. The top plate 4 and the cover 22 close simultaneously, completely sealing the ventilation channel of the cabinet 1, effectively preventing external moisture from entering the cabinet and eliminating the problem of component corrosion due to moisture. At the same time, auxiliary heat dissipation can be achieved in the sealed state through the heat conduction components built into the top plate 4, making up for the defects of heat dissipation failure in the fully enclosed structure. Furthermore, this equipment can perfectly balance the core requirements of efficient heat dissipation and dustproof and moisture-proof sealing of the power distribution cabinet under all working conditions by adaptively switching between active ventilation heat dissipation and sealed heat conduction heat dissipation modes. It solves the shortcomings of traditional equipment that cannot simultaneously adapt to heat dissipation and protection from the structural root, eliminates the hidden dangers of equipment operation, and effectively ensures the long-term stable and safe operation of the power distribution cabinet.

[0026] In the example of this application, the rotating sealing assembly includes two arc-shaped plates 15 symmetrically fixed to one end of the connecting frame 3 near the top of the cabinet 1. Each arc-shaped plate 15 is rotatably fitted with a connecting column 16. One end of each of the two top plates 4 is fixedly connected to the corresponding connecting column 16. The arc of the arc plate 15 is set to be greater than 180°, which can form a full-enclosed limiting and wrapping effect on the connecting column 16, effectively preventing the connecting column 16 from shifting, slipping, or detaching during the frequent rotation and opening and closing of the top plate 4, and greatly improving the assembly stability and rotational reliability of the hinge structure.

[0027] As a preferred example of the present invention, the arc-shaped plate 15 fixed at the end of the connecting frame 3 and the internally rotating connecting column 16 form a hinged structure, allowing the top plate 4 to flexibly rotate and open / close relative to the connecting frame 3 via the connecting column 16. The limiting structure of the arc-shaped plate 15 can constrain the rotation trajectory of the top plate 4, while the sealing structure of the hinged joint can fill the structural gaps at the rotating connection of the top plate 4. Compared with the traditional design of a fixed and sealed top of the distribution cabinet without a movable opening and closing structure, this structure not only ensures the smoothness and stability of the opening and closing action of the top plate 4, avoiding problems such as jamming and offset, but also achieves complete sealing of the hinge position when the top plate 4 is closed, eliminating the problems of air leakage, dust ingress, and water seepage, further enhancing the overall sealing performance of the cabinet 1, blocking external impurities and moisture from entering the cabinet 1 from the connection structure, protecting the internal electrical components from corrosion and dust accumulation, and effectively extending the service life of the equipment.

[0028] It should be noted that sealing gaskets can be fixedly connected to the outer peripheral wall of the connecting column 16 and the end of the top plate 4 near the baffle 2. The sealing gaskets are made of high temperature resistant, aging resistant, and highly elastic flame retardant silicone material, which has excellent high and low temperature resistance, dustproof and moisture-proof and anti-aging properties. They are suitable for the long-term operating environment of the power distribution cabinet and are not prone to hardening, deformation and failure. They can effectively fill the hinge rotation gap and the fitting gap of the top plate 4, and greatly improve the sealing performance of the rotation connection position. At the same time, right-angled triangular buffer pads 26 can be fixedly connected to both sides of the top of the cabinet 1. The buffer pads 26 are made of highly elastic flame retardant rubber material, which has excellent elasticity and resilience, wear resistance and pressure resistance and good insulation. During the closing process of the top plate 4, it can provide flexible buffering for the top plate 4 to avoid the top plate 4 and the cabinet 1 from hard collision, which will generate noise and structural wear, and play a role in shock absorption and protection. At the same time, the triangular structure can further fit the contact gap after the top plate 4 is closed, and after squeezing and fitting, it can further compact the sealing surface, and help improve the overall fitting and sealing performance of the top plate 4 and the top of the cabinet 1.

[0029] In the example of this application, the lifting assembly includes a mounting base 27 fixed to the top of each air guide hood 12, and a limiting frame 14 fixed to the top plate 4 and directly opposite the position of the corresponding mounting base 27. Each mounting base 27 has a guide wheel 29 rotatably mounted on its inner side, and each guide wheel 29 is correspondingly rolled and assembled inside the limiting frame 14.

[0030] As a preferred example of the present invention, a rolling fit structure is formed between the mounting base 27 on the top of the air guide hood 12 and the limiting frame 14 on the top plate 4. The rolling displacement of the guide wheel 29 inside the limiting frame 14 converts the horizontal sliding motion of the air guide hood 12 into the flipping opening and closing motion of the top plate 4, realizing the mechanical linkage between the ventilation operation of the air guide hood 12 and the opening and closing state of the top plate 4. This structure can automatically lift and reset the top plate 4 without the need for additional drive equipment. The synchronous control of the heat dissipation structure and the sealing structure is achieved through pure mechanical linkage. The structure has strong linkage and adaptability, which can ensure that the top plate 4 opens synchronously to assist in heat dissipation when ventilation and heat dissipation are turned on, and closes synchronously to achieve sealing when ventilation is turned off. It matches different operating conditions of the power distribution cabinet and avoids the defects of traditional structures where heat dissipation and sealing cannot be synchronously adapted. At the same time, the rolling fit operation mode has low wear and low failure rate, which greatly improves the reliability and durability of the equipment operation.

[0031] In the example of this application, the drive assembly includes a dual-axis motor 17 located at the middle of the top of the cabinet 1, and a first rack 20 symmetrically slidably mounted on the top of the cabinet 1 via a limiting sliding part. The dual-axis motor 17 is fixed between two baffles 2 via a fixing bracket. One drive end of the dual-axis motor 17 is fixed with a drive gear 19. The drive gear 19 is located between the two first racks 20 and meshes with both first racks 20 simultaneously. The ends of the two first racks 20 are fixedly connected to the side wall of the corresponding air guide hood 12 via connecting rods 25.

[0032] It should be noted that the limiting sliding part includes limiting grooves 35 opened on the top of the cabinet 1 corresponding to the two first racks 20. Each limiting groove 35 is slidably connected to a limiting block 36, and each limiting block 36 is fixedly connected to the corresponding first rack 20.

[0033] As a preferred example of the present invention, the component uses a dual-axis motor 17 as the core power source. Through the meshing transmission of the drive gear 19 and the two first racks 20 on both sides, the rotational power of the motor is converted into the synchronous and opposite horizontal sliding power of the two first racks 20. Then, through the connecting rod 25, the air guide shrouds 12 on both sides are moved synchronously. At the same time, the sliding trajectory of the first racks 20 is limited and constrained by the limiting sliding part composed of the limiting groove 35 and the limiting block 36 on the top of the cabinet 1. Thus, the synchronous drive of the dual-sided heat dissipation structure is achieved by a single power source. The transmission is uniform and the operation is stable. It can effectively avoid ventilation imbalance and structural jamming caused by the asynchronous operation of the two air guide shrouds 12. At the same time, the limiting structure can prevent rack sliding deviation, misalignment, and jamming, ensuring the stability of the drive transmission. It simplifies the overall drive structure, reduces the use of electrical control equipment, reduces equipment energy consumption and failure probability, and greatly improves the stability of heat dissipation structure control.

[0034] In the example of this application, the rotating connection assembly includes a rotating rod 30 rotatably mounted on the inner side of the mounting base 27 below the guide wheel 29. Two rotating rods 30 on the same side pass through the mounting base 27 at opposite ends and are fixedly connected to each other. An L-shaped connecting block 28 is fixedly mounted on the rotating rod 30 inside each mounting base 27. The connecting block 28 is fixedly connected to the top end of the corresponding cover 22. The first transmission assembly includes a rotating shaft 32 fixed on one of the air guide covers 12 on the same side. A first transmission gear 33 is rotatably mounted on the end of the rotating shaft 32. A second rack 34 is meshed below the first transmission gear 33. The second rack 34 is fixed to the top of the cabinet 1. A second transmission gear 31 that meshes with the first transmission gear 33 is fixed on the rotating rod 30 between the two mounting seats 27 on the same side.

[0035] As a preferred example of the present invention, the rotating rod 30, which is rotatably mounted inside the mounting base 27, carries the L-shaped connecting block 28, thus fixing the cover 22 and the connecting block 28 together. This, combined with the first transmission component, forms a fully mechanical linkage control structure, eliminating the need for an independent electrical control system. The adaptive opening and closing control of the cover 22 is achieved entirely through the sliding motion of the air guide 12. In actual operation, the sliding of the air guide 12 causes the rotating shaft 32 to move synchronously, causing the first transmission gear 33 at the end of the rotating shaft 32 to roll and mesh along the second rack 34 fixed to the top of the cabinet 1. This converts the linear sliding motion of the air guide 12 into gear rotational power. Then, through the meshing transmission of the first transmission gear 33 and the second transmission gear 31, the rotating rod 30 is synchronously rotated and deflected, driving the cover 22 to complete the flipping opening and closing action. This perfectly adapts to the two operating conditions of the power distribution cabinet. When the equipment is under high-load heat dissipation operation, the air guide 12 slides... Ventilation is performed at the outermost opening on the top of cabinet 1. Simultaneously, the cover 22 automatically opens, smoothly guiding the heat dissipation airflow and ensuring the high efficiency of active ventilation and heat dissipation. It quickly removes the heat accumulated inside the cabinet. When the equipment is operating under low load, idle, or in rainy environments, the air guide cover 12 slides to the adjacent inner opening to complete its position reset, and the cover 22 automatically closes, completely sealing the airflow port. Together with the closing of the top plate 4, the entire cabinet 1 is sealed. This purely mechanical linkage structure has strong transmission synchronization, rapid response, simple and stable structure, and low failure rate. It effectively solves the core drawbacks of traditional power distribution cabinets where ventilation holes are always open and cannot be closed, and ventilation and heat dissipation cannot be linked and matched with sealing protection. It can block the moisture of rainwater from entering the interior of cabinet 1 in all rainy weather, avoiding problems such as moisture corrosion of electrical components. Based on matching the heat dissipation requirements of the equipment under all operating conditions, it greatly improves the environmental adaptability and overall protection performance of the power distribution cabinet.

[0036] In the example of this application, the heat-conducting assembly includes heat-conducting chambers 44 formed inside each of the top plates 4. A heat dissipation plate 5 is sealed and embedded on the surface of each of the two top plates 4. The surface of the heat dissipation plate 5 is coplanar with the surface of the opening and closing top plate 4. One end of the heat dissipation plate 5 communicates with the inner cavity of the heat-conducting chamber 44, and the length of the heat dissipation plate 5 is less than the length of the inner cavity of the heat-conducting chamber 44. A plurality of heat-conducting sheets 45 are equidistantly fixed to the end of the heat dissipation plate 5 extending into the heat-conducting chamber 44. The bottom end of each heat-conducting sheet 45 is fixedly connected to the bottom of the inner cavity of the heat-conducting chamber 44. The heat-conducting chambers 44 on the top plate 4 are connected by a first flexible tube 18. One end of each of the caps 22 is provided with a second flexible tube 13 that communicates with the inner cavity of the corresponding air guide shroud 12. The other end of the second flexible tube 13 is connected to the inner cavity of the corresponding heat-conducting chamber 44 away from the first flexible tube 18. The heat dissipation plate 5 and the heat-conducting sheet 45 are integrally formed from anodized aluminum alloy sheet. While retaining high thermal conductivity, the surface anodized layer can greatly improve the weather resistance, corrosion resistance, waterproof and stain resistance, and can be adapted to complex working conditions such as outdoor wind and rain.

[0037] As a preferred example of the present invention, the heat conducted by the cabinet 1 is stored in the heat-conducting chamber 44 inside the top plate 4, and the heat contact conduction area is increased by the heat-conducting sheet 45, so that the heat inside the top plate 4 and the cabinet 1 is quickly conducted to the exposed heat dissipation plate 5 to achieve passive heat dissipation. At the same time, the heat is interconnected between the heat-conducting chambers 44 on both sides of the top plate 4 through the first flexible hose 18, and the heat-conducting chamber 44 is connected to the inner cavity of the air duct 12 by the second flexible hose 13. During active ventilation and heat dissipation, the heat stored in the heat-conducting chamber 44 can be quickly removed by the airflow of the air duct. Thus, this structure adds a passive heat conduction and heat dissipation system to the power distribution cabinet, forming a dual heat dissipation mechanism with the active ventilation and heat dissipation of the fan. Under the condition that the equipment is operating in a closed manner and the air duct 12 is closed and the ventilation channel cannot be opened, it can complete the process autonomously. The heat dissipation of cabinet 1 avoids the problem of excessive temperature caused by heat accumulation in the sealed cabinet. At the same time, the exposed heat dissipation plate 5 can rely on the natural environment for auxiliary heat dissipation. In rainy weather, the washing effect of rainwater can directly act on the surface of heat dissipation plate 5, quickly removing the heat accumulated in heat dissipation plate 5, greatly improving the passive heat dissipation rate and further enhancing the overall heat dissipation effect. Moreover, all pipe connection structures adopt a sealed design, which will not damage the overall airtightness of cabinet 1. This effectively makes up for the shortcomings of traditional power distribution cabinets that rely solely on fan ventilation for heat dissipation, heat dissipation failure in sealed conditions, and inability to utilize auxiliary heat dissipation in rainy weather. It forms a multi-heat dissipation system of active ventilation, sealed heat conduction, and natural auxiliary heat dissipation, which comprehensively improves the overall heat dissipation capacity of the equipment under all operating conditions.

[0038] In the example of this application, the cleaning assembly includes mounting plates 10 symmetrically slidably mounted on both sides of the surface of each of the top plates 4. A brush plate 11 is fixed to the side of each mounting plate 10 near the top plate 4. A first pin seat 9 is fixed to the middle of the surface of each mounting plate 10. Second pin seats 7 are symmetrically slidably mounted on the inner sides of the openings at both ends of the connecting frame 3. An arc-shaped rod 8 is hinged between the first pin seat 9 and the corresponding second pin seat 7 on the same side via a pin shaft. A torsion spring 24 for driving the arc-shaped rod 8 to return to its original position is sleeved on the outer side of each pin shaft. The second transmission assembly includes a bidirectional lead screw 38 rotatably mounted between the two ends of the inner cavity of the connecting frame 3, and a worm gear 39 fixed to the outer periphery of the middle part of the bidirectional lead screw 38. The other driving end of the dual-axis motor 17 rotates through the bottom end of the connecting frame 3 and extends... The worm 37, which meshes with the worm gear 39, is fixed inside the connecting frame 3. The two-way lead screw 38 is symmetrically threaded with transmission plates 40 on both sides. The ends of each transmission plate 40 are fixedly connected to the corresponding second pin seat 7. Telescopic protective covers 6 are fixedly connected between the two second pin seats 7 on the same side and between the second pin seat 7 and the inner wall of the connecting frame 3. The telescopic protective covers 6 can synchronously complete the unfolding and folding action with the sliding movement of the second pin seat 7. They can completely seal and protect the precision transmission components such as the worm 37, worm gear 39 and two-way lead screw 38 inside the connecting frame 3. They can effectively prevent external dust, debris and moisture from entering the connecting frame 3 and avoid problems such as dust accumulation, jamming, moisture corrosion, wear and jamming of transmission components.

[0039] As a preferred example of the present invention, the backup power end of the original dual-axis motor 17 of the equipment is used as the sole power source. The vertical rotational power of the motor is converted into the horizontal rotational power of the bidirectional lead screw 38 through the meshing transmission of the worm gear 37 and worm wheel 39. The reverse threads on both sides of the bidirectional lead screw 38 drive the synchronous symmetrical displacement of the transmission plates 40 and the second pin seat 7, thereby causing the arc-shaped rod 8 to swing. This drives the mounting plate 10 and the brush plate 11 to slide back and forth along the surface of the top plate 4, achieving automated cleaning. Thus, dust, debris, and other impurities attached to the surface of the heat sink 5 can be dynamically cleaned simultaneously throughout the opening and closing process of the top plate 4, without the need for a separate start-stop cleaning program, making it compatible with... The equipment operates in a controlled rhythm, while the torsion spring 24 sleeved on the outer side of the pin shaft continuously provides a stable elastic preload, ensuring that the brush plate 11 always fits tightly against the heat dissipation plate 5. This effectively avoids problems such as loose brushes, uneven fit, and gaps in cleaning, significantly improving the comprehensiveness and cleanliness of impurity removal. The entire structure reuses the core drive power source of the equipment, eliminating the need for a separate cleaning drive device, greatly simplifying the overall structure and reducing manufacturing costs and operating energy consumption. Furthermore, the transmission method of the worm gear 39, worm 37, and double-acting screw 38 features smooth operation and strong self-locking, ensuring synchronous and balanced operation of the cleaning components on both sides. After stopping, the position is automatically locked to prevent structural shaking. The offset cleaning process, through automated synchronous cleaning, continuously removes dust and debris from the surface of the heat sink 5, preventing impurities from covering the surface of the heat sink 5 and affecting its heat dissipation effect. The brush plate 11 is made of antistatic, flame-retardant nylon bristles combined with a hard, flame-retardant ABS substrate. The bristles are flexible, wear-resistant, and aging-resistant, possessing excellent high and low temperature resistance, suitable for long-term outdoor and indoor operation of the distribution cabinet. Simultaneously, the bristles have antistatic properties, effectively preventing the generation of static electricity during cleaning and eliminating interference with electrical components inside the cabinet, complying with electrical equipment safety regulations. Furthermore, the overall hardness of the brush is moderate, preventing scratches and wear on the surface of the heat sink 5 during reciprocating cleaning. It does not shed lint or deform, and can maintain a stable and consistent cleaning effect over a long period of time. The base plate has sufficient rigidity, which can effectively cooperate with the elastic bonding structure of the torsion spring 24 to ensure the flatness and stability of the cleaning operation. Moreover, the width of the two brush plates 11 on the same side is greater than the width of the corresponding mounting plate 10, and the brush plates 11 are centrally mounted in the middle of the corresponding mounting plate 10. This layout design allows the brush plates 11 on both sides to cover the central core area of ​​the heat sink 5 when they slide close to each other for cleaning. This effectively makes up for the cleaning blind spots of conventional cleaning structures, completely eliminates the problem of incomplete cleaning and residual dust and debris in the middle area of ​​the heat sink 5, and achieves full coverage and no dead angle cleaning of the entire heat sink 5.

[0040] It should be noted that this power distribution cabinet can be equipped with an intelligent detection and automatic control structure. Specifically, a rain sensor (not shown in the figure) can be installed on the connecting frame 3 to sense external environmental signals such as rainfall and high humidity in real time. At the same time, a temperature and humidity sensor (not shown in the figure) can be installed inside the cabinet 1 to monitor the temperature and humidity operating parameters inside the cabinet 1 in real time. Both the rain sensor and the temperature and humidity sensor are electrically connected to a controller of existing technology through wires. The control output terminal of the controller is electrically connected to the dual-axis motor 17 of the equipment, forming a complete closed-loop control link of signal acquisition, logic judgment and execution drive. When the equipment is running, the controller can receive environmental data and cabinet internal operating condition data collected by the two sets of sensors in real time, and automatically drive the dual-axis motor 17 to rotate forward and reverse and start and stop according to the preset control logic. This, in turn, controls the sliding of the air guide hood 12, the opening and closing of the top plate 4 and the cover 22, and the operation of the cleaning mechanism. This realizes the intelligent adaptive switching between the equipment's heat dissipation mode and sealing protection mode without manual operation and adjustment, further improving the automation level and environmental adaptability of the power distribution cabinet under all operating conditions.

[0041] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A power distribution cabinet with an auxiliary ventilation structure, characterized in that, include: The cabinet (1) has symmetrical baffles (2) on its top, and a connecting frame (3) is installed between the two baffles (2). The bottom sides of the connecting frame (3) are hinged to the top plate (4) through a rotating sealing assembly. The heat dissipation mechanism includes two sets of exhaust holes (21) and two sets of air inlets (23) symmetrically opened on the top of the cabinet (1) and connected to the inner cavity of the cabinet (1). Each set of exhaust holes (21) and air inlets (23) is slidably connected to an air guide cover (12). The air guide covers (12) corresponding to the exhaust holes (21) and air inlets (23) are respectively equipped with an exhaust fan (42) and an exhaust fan (41). The end opening of the air guide cover (12) is hinged to a cover (22) through a rotating connection assembly. The top of the air guide cover (12) is provided with a lifting assembly for opening and closing the top plate (4). A driving assembly is provided between each air guide cover (12) for driving the two air guide covers (12) to move synchronously towards each other or away from each other. A first transmission assembly is provided between the driving assembly and the rotating connection assembly. A heat conduction assembly is provided on the top plate (4).

2. A power distribution cabinet with an auxiliary ventilation structure according to claim 1, characterized in that, It also includes a cleaning mechanism, which includes a cleaning component disposed on the surface of the top plate (4) and a second transmission component disposed inside the connecting frame (3). The power end of the driving component is connected to the input end of the second transmission component, and the power output end of the second transmission component is connected to the cleaning component.

3. A power distribution cabinet with an auxiliary ventilation structure according to claim 2, characterized in that, The rotating sealing assembly includes two arc-shaped plates (15) symmetrically fixed to the top end of the connecting frame (3) near the cabinet (1). Each arc-shaped plate (15) is rotatably fitted with a connecting column (16). One end of each of the two top plates (4) is fixedly connected to the corresponding connecting column (16).

4. A power distribution cabinet with an auxiliary ventilation structure according to claim 3, characterized in that, The lifting assembly includes a mounting base (27) fixed to the top of each air guide hood (12) and a limiting frame (14) fixed to the top plate (4) and facing the corresponding mounting base (27). Each mounting base (27) has a guide wheel (29) rotatably mounted on its inner side, and each guide wheel (29) is correspondingly rolled inside the limiting frame (14).

5. A power distribution cabinet with an auxiliary ventilation structure according to claim 4, characterized in that, The drive assembly includes a dual-axis motor (17) located at the top center of the cabinet (1) and a first rack (20) symmetrically slidably mounted on the top of the cabinet (1) via a limiting sliding part. The dual-axis motor (17) is fixed between two baffles (2) via a fixing bracket. One drive end of the dual-axis motor (17) is fixed with a drive gear (19). The drive gear (19) is located between the two first racks (20) and meshes with the two first racks (20) simultaneously. The ends of the two first racks (20) are fixedly connected to the side wall of the corresponding air guide hood (12) via a connecting rod (25).

6. A power distribution cabinet with an auxiliary ventilation structure according to claim 5, characterized in that, The rotating connection assembly includes a rotating rod (30) rotatably mounted on the inner side of the mounting base (27) below the guide wheel (29). Two rotating rods (30) on the same side pass through the mounting base (27) at opposite ends and are fixedly connected to each other. An L-shaped connecting block (28) is fixedly mounted on the rotating rod (30) inside each mounting base (27). The connecting block (28) is fixedly connected to the top of the corresponding cover (22).

7. A power distribution cabinet with an auxiliary ventilation structure according to claim 6, characterized in that, The first transmission assembly includes a rotating shaft (32) fixed on one of the air guide covers (12) on the same side. A first transmission gear (33) is rotatably mounted on the end of the rotating shaft (32). A second rack (34) is meshed below the first transmission gear (33). The second rack (34) is fixed to the top of the cabinet (1). A second transmission gear (31) that meshes with the first transmission gear (33) is fixed on the rotating rod (30) between the two mounting seats (27) on the same side.

8. A power distribution cabinet with an auxiliary ventilation structure according to claim 7, characterized in that, The heat-conducting assembly includes heat-conducting chambers (44) opened inside each of the top plates (4). A heat dissipation plate (5) is sealed and embedded on the surface of both top plates (4). The surface of the heat dissipation plate (5) is coplanar with the surface of the opening and closing top plate (4). One end of the heat dissipation plate (5) is connected to the inner cavity of the heat-conducting chamber (44), and the length of the heat dissipation plate (5) is less than the length of the inner cavity of the heat-conducting chamber (44). A number of heat-conducting sheets (45) are fixed at equal intervals at one end of the heat dissipation plate (5) that extends into the heat-conducting chamber (44). The bottom end of each heat-conducting sheet (45) is fixedly connected to the bottom of the inner cavity of the heat-conducting chamber (44). A first flexible hose (18) is connected between the heat-conducting chambers (44) on the two top plates (4). One end of each cover (22) is provided with a second flexible hose (13) that is connected to the inner cavity of the corresponding air guide hood (12). The other end of the second flexible hose (13) is connected to the inner cavity of the corresponding heat-conducting chamber (44) away from the first flexible hose (18).

9. A power distribution cabinet with an auxiliary ventilation structure according to claim 8, characterized in that, The cleaning assembly includes mounting plates (10) symmetrically slidably mounted on both sides of the surface of each top plate (4). Each mounting plate (10) has a brush plate (11) fixed on the side near the top plate (4). A first pin seat (9) is fixed in the middle of the surface of each mounting plate (10). A second pin seat (7) is symmetrically slidably mounted on the inner side of the openings at both ends of the connecting frame (3). An arc-shaped rod (8) is hinged between the first pin seat (9) and the corresponding second pin seat (7) on the same side through a pin shaft. A torsion spring (24) is sleeved on the outer side of each pin shaft to drive the arc-shaped rod (8) to reset.

10. A power distribution cabinet with an auxiliary ventilation structure according to claim 9, characterized in that, The second transmission assembly includes a bidirectional lead screw (38) rotatably mounted between the two ends of the inner cavity of the connecting frame (3), and a worm gear (39) fixed to the outer periphery of the middle part of the bidirectional lead screw (38). The other drive end of the dual-axis motor (17) rotates through the bottom end of the connecting frame (3) and extends into the interior of the connecting frame (3), and is fixed with a worm (37) meshing with the worm gear (39). The two sides of the bidirectional lead screw (38) are symmetrically threaded with transmission plates (40), and the ends of each transmission plate (40) are fixedly connected to the corresponding second pin seat (7).

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