Outdoor power distribution cabinet with protection structure

Abstract

The utility model relates to a kind of outdoor distribution cabinet with protective structure, the present application relates to the technical field of smart grid, fender is installed in the bottom of heat insulation top, four sides in fender are equipped with roller shutter roller, and roller shutter roller is wound with roller shutter, the bottom edge of roller shutter is wrapped with electromagnet bar, and the electromagnet bar is magnetically attracted with corresponding lower roller shutter positioning plate, and roller shutter positioning plate is fixed on the outer wall of cabinet body;Two ends shaft of the roller shutter roller are rotatably installed in shaft seat, and shaft seat is fixed on the bottom wall of heat insulation top;The bottom corner of fender is equipped with winding drive motor using motor base, and driving tooth is connected on the output shaft of winding drive motor, and driving tooth is engaged transmission with driven tooth, and driven tooth is installed on the end shaft of one of roller shutter roller, and three groups of adjacent end shaft of four roller shutter shafts are engaged transmission using bevel gear set. Through the four-edge roller shutter protection structure of winding cooperation magnetic attraction positioning, it can be shielded and protected around cabinet body in heavy rain and dust weather, reduce rainwater dust invasion.

Description

Technical Field

[0001] This invention relates to the field of smart grid technology, and more specifically to an outdoor power distribution cabinet with a protective structure. Background Technology

[0002] Outdoor distribution cabinets are exposed to the outdoor environment for extended periods, requiring both adequate heat dissipation for internal electrical components and protection against rain, dust, and sun exposure. Existing outdoor distribution cabinets often employ fixed louvers and simple rainproof covers, with non-adjustable louver angles and limited heat dissipation capacity in high-temperature environments. Furthermore, they lack active protection mechanisms during severe weather, allowing rainwater and dust to easily penetrate the cabinet, causing short circuits and dust accumulation that leads to aging of components. Some distribution cabinets with protective features only provide unidirectional protection, failing to simultaneously address both heat dissipation and protection switching, resulting in a lack of coordination between the two and impacting the operational stability and lifespan of the distribution cabinet. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing an outdoor power distribution cabinet with a protective structure, which can effectively solve the above problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a cabinet, a base, an insulated top, and an exhaust vent; the cabinet is mounted on the base, and an exhaust vent is installed on the top opening of the cabinet, with the insulated top mounted on the exhaust vent using a support column; it also includes a protective structure, which includes a baffle frame, roller blinds, roller blind positioning plates, and roller blinds; the baffle frame is installed at the bottom of the insulated top, and roller blinds are provided on all four sides of the baffle frame, with roller blinds wound around the roller blinds, and an electromagnet rod wrapped around the bottom edge of the roller blinds, which magnetically attracts the corresponding roller blind positioning plates below, and the roller blind positioning plates are fixed to the outer wall of the cabinet; both ends of the roller blinds are rotatably mounted in shaft seats, and the shaft seats are fixed to the bottom wall of the insulated top; a winding drive motor is mounted on a motor base at one bottom corner of the baffle frame, and a drive gear is connected to the output shaft of the winding drive motor, the drive gear meshing with the driven gear for transmission, the driven gear being mounted on one end shaft of one of the roller blinds, and the three sets of adjacent end shafts of the four roller blinds meshing with a bevel gear set for transmission.

[0005] Furthermore, the ventilation holes on both sides of the cabinet are fitted with mounting frames. Several ventilation louvers are mounted inside the mounting frames by rotating from top to bottom using a pivot. The ventilation louvers are connected by chains, and the topmost ventilation louver is connected to the bottom of the top plate of the mounting frame by a chain.

[0006] Furthermore, an exhaust fan is provided at the bottom of the exhaust vent, and the exhaust fan is installed at the bottom of the top panel of the cabinet.

[0007] Furthermore, a suction fan is provided on the outer side of the mounting frame.

[0008] Furthermore, the outer frame of the suction fan is mounted on the movable frame using several connecting rods. A lead screw and a linear bearing are respectively installed on the outer wall of the movable frame. The lead screw is rotatably connected to the lead screw nut, and the lower end of the lead screw is connected to the output shaft of the lifting drive motor via a coupling. The lifting drive motor is mounted on the outer wall of the cabinet using a fixing plate. The guide column is movably inserted into the linear bearing, and the lower end of the guide column is mounted on the outer wall of the cabinet using a fixing plate. The top ends of both the lead screw and the guide column are mounted on the outer wall of the cabinet using limiting top plates. The top end of the lead screw and the limiting top plate are rotatably connected using a bearing. A baffle is embedded in the opening of the outer wall of the movable frame, and a clearance slot is opened at the bottom of the movable frame. The clearance slot is embedded with a snap-fit ​​plate integrally formed on the support plate, and the support plate is fixed to the outer wall of the cabinet.

[0009] Furthermore, an electromagnet is installed at the bottom of the top plate of the movable frame using a connecting rod, and the electromagnet is magnetically attracted to the uppermost heat dissipation louvers.

[0010] Furthermore, the connecting rod is a telescopic rod, and its bottom end is rotatably connected to an electromagnet using a connecting ball. The electromagnet is mounted on the output end of the electric telescopic rod 3 using a universal joint. The electric telescopic rod is mounted on the bottom of the top plate of the movable frame.

[0011] Furthermore, the heat-insulating roof is a four-sided conical structure with a hollow interior and heat-insulating layers installed on its inner walls.

[0012] The working principle of this invention is as follows: Under normal heat dissipation conditions, the cabinet is mounted on the base, and the insulated top is supported by pillars above the exhaust vents. The four-sided conical insulated top blocks direct sunlight, and its hollow internal structure and inner wall insulation layer further prevent heat transfer to the cabinet. The exhaust fan at the bottom of the cabinet's top panel is not operating. Within the mounting frames inside the ventilation holes on both sides of the cabinet, the ventilation louvers are in a naturally tilted, open state, connected by their own weight and chains. At this time, the moving frame is positioned above the ventilation louvers (see...). Figure 2 (The positional relationship between the movable frame on the right and the heat dissipation louvers) The heat of the entire distribution cabinet is naturally dissipated outward from the exhaust vent on the top plate and the heat dissipation louvers on both sides; in normal windy and rainy weather, the size of the heat insulation top of the cabinet can effectively protect the exhaust vent and prevent rainwater from entering.

[0013] When the temperature inside the cabinet is much higher than the outside temperature, the exhaust fan installed at the top of the cabinet starts operating. At the same time, the lifting drive motor works, driving the moving frame to descend until it reaches the support plate. At this point, the snap-fit ​​plate is inserted into the clearance slot, and the electromagnet is energized and magnetized, attracting the topmost heat dissipation louvers. Several heat dissipation louvers rotate upwards under the drive of the chain, thereby increasing the opening angle of the heat dissipation louvers. At this time, the suction fan starts working, bringing the low-temperature outside air into the cabinet, and moving it upwards to the exhaust vent at the top of the cabinet. Driven by the exhaust fan, the air is then exhausted, thus achieving cooling inside the cabinet.

[0014] When protection is needed in severe weather such as heavy rain or sandstorms, the electromagnet installed at the bottom of the movable frame top plate via the connecting rod is de-energized and demagnetized, releasing the attraction to the topmost heat dissipation louvers. Under the action of gravity, the heat dissipation louvers rotate downwards around their pivot axis to a naturally drooping, tilted, open state, turning off the suction fan and the exhaust fan at the top of the cabinet, and the cabinet is in a normal heat dissipation state. At the same time, the winding drive motor starts, and its output shaft drives the active gear to rotate. The active gear meshes with and drives the driven gear to rotate, which drives a roller shutter connected to it to rotate. This roller shutter is driven by the meshing of bevel gear sets between adjacent end shafts, causing the four roller shutters on the four sides of the frame to rotate synchronously. The roller shutter wrapped on the roller shutter is then released downwards and unfolds. When the roller shutter descends to the bottom, the electromagnet rod wrapped around its bottom edge is magnetically fixed to the roller shutter positioning plate fixed on the outer wall of the cabinet, thereby blocking the cabinet on all four sides and reducing the intrusion of rainwater and sandstorms. At the same time, normal heat dissipation airflow is discharged from the gaps left between the adjacent roller shutters.

[0015] When the weather returns to normal and the protective measures need to be lifted, the winding drive motor rotates in reverse, driving the four roller blinds to rotate in the opposite direction through the transmission of the drive gear, driven gear and bevel gear set, and rewinding the roller blind back onto the roller blinds.

[0016] Furthermore, by controlling the extension and retraction of the electric telescopic rod, the height of the electromagnet can be controlled, thereby adjusting the opening angle of the heat dissipation louvers. When the maximum amount of ventilation and heat dissipation is required, the electric telescopic rod retracts to the minimum stroke position, and the electromagnet magnetically attracts the heat dissipation louvers to the horizontal position.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides an outdoor power distribution cabinet with a protective structure. Through the retractable four-sided roller shutter protective structure combined with magnetic positioning, the cabinet can be shielded and protected from rain and dust in heavy rain and sandstorms, reducing the intrusion of rainwater and sand. With the addition of adjustable-angle heat dissipation louvers, an intake fan and a top exhaust fan, the ventilation opening can be changed according to the temperature inside the cabinet, improving the heat dissipation efficiency under high-temperature conditions. The heat-insulating top can block solar heat radiation. The whole system can flexibly switch between protection mode and heat dissipation mode, taking into account both the heat dissipation requirements of the outdoor power distribution cabinet and the ability to protect against harsh environments, thereby improving the reliability of equipment operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the upward-moving state of the right-hand movable frame in this invention.

[0020] Figure 3 This is a schematic diagram of the installation of the heat-insulating roof in this invention.

[0021] Figure 4 This is a bottom view of the heat-insulating roof in this invention.

[0022] Figure 5 This is a schematic diagram showing the connection of the winding drive motor, driving gear, driven gear, bevel gear set, and bearing in this invention.

[0023] Figure 6 This is a cross-sectional view of the interior of the movable frame in this invention.

[0024] Figure 7 This is a schematic diagram of the heat dissipation louvers and mounting frame in this invention.

[0025] Figure 8 This is a schematic diagram of the movable frame and the suction fan in this invention.

[0026] Figure 9 This is a schematic diagram of the connection between the electromagnet and the electric telescopic rod in Embodiment 2.

[0027] Explanation of reference numerals in the attached figures: 1. Cabinet body; 2. Base; 3. Insulated top; 4. Exhaust vent; 5. Baffle frame; 6. Roller blind roller; 7. Roller blind positioning plate; 8. Support column; 9. Roller blind; 10. Bevel gear set; 11. Winding drive motor; 12. Drive gear; 13. Driven gear; 14. Shaft seat; 15. Moving frame; 15-1. Clearance slot; 16. Nut; 17. Lead screw; 18. Lifting drive motor; 19. Fixing plate; 20. Guide column; 21. Heat dissipation louvers; 22. Support plate; 22-1. Clip plate; 23. Chain; 24. Mounting shaft; 25. Suction fan; 26. Electromagnet; 27. Connecting rod; 28. Connecting column; 29. ​​Mounting frame; 30. Baffle net; 31. Linear bearing; 32. Connecting ball; 33. Electric telescopic rod. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1: See Figures 1-8This embodiment adopts the following technical solution: It includes a cabinet 1, a base 2, a heat-insulating top 3, and an exhaust vent 4; the cabinet 1 is installed on the base 2, and the exhaust vent 4 is installed on the top opening of the cabinet 1. An exhaust fan is provided at the bottom of the exhaust vent 4, and the exhaust fan is installed at the bottom of the top plate of the cabinet 1. The heat-insulating top 3 is installed on the exhaust vent 4 using a support column 8. The heat-insulating top 3 is a four-sided conical structure, and the interior of the heat-insulating top 3 is a hollow structure, with heat insulation layers installed on the inner walls; it also includes a protective structure, which includes a baffle frame 5, a roller shutter 6, a roller shutter positioning plate 7, and a roller shutter 9; the baffle frame 5 is installed at the bottom of the heat-insulating top 3, and roller shutter 6 is provided on all four sides of the baffle frame 5. A roller shutter 9 is wound on the roller shutter 6, and an electromagnet rod is wrapped around the bottom edge of the roller shutter 9 (the wiring method of the electromagnet rod is: using a flexible and bend-resistant cable, A spiral telescopic spring cable is connected at one end to the internal control power supply of the cabinet 1. The cable moves with the raising and lowering of the roller blind. The cable is arranged on the side of the roller blind 9 and located in the space inside the baffle frame. It extends as the roller blind 9 is lowered and retracts when it is rolled up. The electromagnet rod is magnetically attracted to the roller blind positioning plate 7 below. The roller blind positioning plate 7 is fixed to the outer wall of the cabinet 1. The two ends of the roller blind roller 6 are rotatably installed in the bearing seat 14. The bearing seat 14 is fixed to the bottom wall of the heat insulation top 3. A winding drive motor 11 is installed at one corner of the bottom of the baffle frame 5 using a motor seat. The output shaft of the winding drive motor 11 is connected to the drive gear 12. The drive gear 12 meshes with the driven gear 13. The driven gear 13 is installed on one end shaft of one of the roller blind rollers 6. The three sets of adjacent end shafts of the four roller blind rollers 6 are meshed and driven by a bevel gear set 10.

[0030] The cabinet 1 has ventilation holes on both side walls, into which mounting frames 29 are embedded. Several ventilation louvers 21 are rotatably mounted from top to bottom within the mounting frames 29 using a rotating shaft. These louvers 21 are connected by chains 23, with the uppermost louver 21 connected to the bottom of the top plate of the mounting frame 29 via the chain 23. An exhaust fan 25 is located on the outside of the mounting frame 29. The outer frame of the exhaust fan 25 is mounted on a movable frame 15 using several connecting rods 27. A lead screw 16 and a linear bearing 31 are respectively mounted on the outer wall of the movable frame 15. A lead screw 17 is rotatably connected to the lead screw 16, and the lower end of the lead screw 17 is connected to the output shaft of a lifting drive motor 18 via a coupling. The lifting drive motor 18 is mounted on a fixed plate 19. The guide post 20 is movably inserted into the linear bearing 31. The lower end of the guide post 20 is installed on the outer wall of the cabinet 1 using a fixing plate 19. The top ends of the lead screw 17 and the guide post 20 are both installed on the outer wall of the cabinet 1 using a limiting top plate. The top end of the lead screw 17 is rotatably connected to the limiting top plate using a bearing. A baffle 30 is embedded in the opening of the outer wall of the movable frame 15. A clearance slot 15-1 is opened at the bottom of the movable frame 15. The clearance slot 15-1 is embedded with a snap-fit ​​plate 22-1 integrally formed on the support plate 22. The support plate 22 is fixed to the outer wall of the cabinet 1. An electromagnet 26 is installed at the bottom of the top plate of the movable frame 15 using a connecting rod 27. The electromagnet 26 is magnetically attracted to the uppermost heat dissipation louvers 21.

[0031] The working principle of this invention is as follows: Under normal heat dissipation conditions, cabinet 1 is mounted on base 2, and heat-insulating top 3 is supported above exhaust vent 4 by pillar 8. The four-sided conical heat-insulating top 3 blocks direct sunlight, and its hollow internal structure and inner wall insulation layer further prevent heat transfer to cabinet 1; the exhaust fan at the bottom of the top plate of cabinet 1 is not operating; in the mounting frames 29 inside the heat dissipation holes on both sides of cabinet 1, the heat dissipation louvers 21 are in a naturally hanging, tilted, open state by their own weight and the connection of chains 23. At this time, the moving frame 15 is located above the heat dissipation louvers 21 (see...). Figure 2 (The positional relationship between the movable frame 15 on the right and the heat dissipation louvers 21) The heat of the entire distribution cabinet is naturally dissipated outward from the exhaust vent 4 on the top plate and the heat dissipation louvers 21 on both sides; In normal windy and rainy weather, the size of the heat insulation top 3 on the top of the cabinet 1 can effectively protect the exhaust vent 4 and prevent rainwater from entering.

[0032] When the temperature inside cabinet 1 is much higher than the outside temperature, the exhaust fan installed at the top of cabinet 1 starts operating. At the same time, the lifting drive motor 18 works, driving the moving frame 15 to descend until it reaches the support plate 22. At this time, the snap-fit ​​plate 22-1 is inserted into the clearance slot 15-1. The electromagnet 26 on the moving frame 15 is connected to the control system and energized to generate magnetic force. The on and off of the electromagnet 26 is controlled by the control unit built into the power distribution cabinet in conjunction with the temperature sensor inside the cabinet. After the electromagnet 26 is energized and magnetized, it is magnetically attracted to the top heat dissipation louvers 21. At this time, several heat dissipation louvers 21 rotate upward under the drive of the chain 23, thereby increasing the opening angle of the heat dissipation louvers 21. At this time, the suction fan 25 starts working, bringing the low-temperature outside air into cabinet 1 and moving it upward to the exhaust vent 4 at the top of cabinet 1. Driven by the exhaust fan, the air is discharged, thereby achieving cooling inside cabinet 1.

[0033] When protection is needed in severe weather such as heavy rain or sandstorms, the control system inside the distribution cabinet, upon receiving rain, snow, or sandstorm sensor signals or a manually triggered protection command, first cuts off the power supply to the electromagnet 26. The electromagnet 26 loses its magnetism, eliminating its attraction and releasing the uppermost heat dissipation louvers 21. Under gravity, the heat dissipation louvers 21 rotate downwards around their axis to a naturally drooping, tilted, open state, shutting off the suction fan 25 and the exhaust fan at the top of the cabinet 1, placing the cabinet 1 in normal heat dissipation mode. Simultaneously, the winding drive motor 11 starts, its output shaft driving the drive gear 12 to rotate. The drive gear 12 meshes with and drives the driven gear 13 to rotate, which in turn drives a connected roller 6 to rotate. This roller 6 rotates via adjacent end shafts. The bevel gear set 10 meshes and drives the four roller shutter rollers 6 on the four sides of the baffle frame 5 to rotate synchronously, and the roller shutter 9 wrapped on the roller shutter rollers 6 is released and unfolded downwards. During the process of the roller shutter 9 descending, the control system synchronously connects the power supply to the electromagnet rod at the bottom edge of the roller shutter 9 to energize it. After the roller shutter 9 descends to the bottom and is in place, the energized electromagnet rod and the roller shutter positioning plate 7 are magnetically locked together. The energization status of the electromagnet rod is controlled by the control unit of the power distribution cabinet in conjunction with the weather detection signal. The magnetic attraction strength matches the local outdoor wind pressure environment to ensure that the bottom edge of the roller shutter fits against the outer wall of the cabinet in bad weather, reducing gaps, thereby blocking the cabinet 1 on all four sides and reducing the intrusion of rainwater and sand. At the same time, normal heat dissipation airflow is discharged from the gaps left between adjacent roller shutters 9.

[0034] When the weather returns to normal and the protection needs to be removed, the control system first disconnects the power supply to the electromagnet rod, demagnetizes the electromagnet rod, releases the magnetic attraction lock between the electromagnet rod and the roller blind positioning plate 7, and the winding drive motor 11 rotates in reverse. Through the transmission of the drive gear 12, driven gear 13 and bevel gear set 10, it drives the four roller blind rollers 6 to rotate in reverse, and rolls the roller blind 9 back onto the roller blind rollers 6.

[0035] Example 2: See Figure 9The difference between this embodiment and Embodiment 1 is that the connecting rod 27 is a telescopic rod, and its bottom end is rotatably connected to the electromagnet 26 via a connecting ball 32. The electromagnet 26 is mounted on the output end of the electric telescopic rod 33 using a universal joint. The electric telescopic rod 33 is mounted on the bottom of the top plate of the movable frame 15. By controlling the extension and retraction of the electric telescopic rod 33, the height of the electromagnet 26 can be controlled, thereby adjusting the opening angle of the heat dissipation louvers 21. When the maximum amount of ventilation and heat dissipation is required, the electric telescopic rod 33 retracts to the minimum stroke position, and the electromagnet 26 magnetically attracts the heat dissipation louvers 21 to the horizontal position.

[0036] Compared with the prior art, the beneficial effects of the present invention are: Excellent environmental protection: The four-sided roller shutter protective structure can be set up and retracted simultaneously. In severe weather, the roller shutter is lowered and magnetically fixed to form a shield around the cabinet, effectively preventing rainwater and dust from entering the cabinet and reducing the risk of electrical components getting damp and accumulating dust. When the weather is normal, the roller shutter can be rolled up as a whole without affecting the normal ventilation of the cabinet.

[0037] Strong heat dissipation and adjustment effect: The angle of the heat dissipation louvers can be adjusted by electromagnets and electric telescopic rods. Together with the suction fan and the top exhaust fan, the ventilation opening can be adjusted according to the temperature inside the cabinet. When the temperature is high, the ventilation volume is increased to enhance the exhaust of hot air inside the cabinet and improve the heat dissipation performance.

[0038] Thermal insulation and cooling effect: The four-sided conical hollow thermal insulation roof, combined with the thermal insulation layer, can block the heat radiation brought by direct sunlight, reduce the heat conduction into the cabinet, and reduce the basic temperature rise of the cabinet.

[0039] Adaptive mode switching: It can switch between various operating conditions such as natural heat dissipation, forced heat dissipation, and harsh environment protection, taking into account both heat dissipation and ventilation and environmental protection, thereby improving the overall operational stability and service life of outdoor power distribution cabinets.

[0040] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. An outdoor power distribution cabinet with a protective structure, comprising a cabinet body (1), a base (2), an insulated top (3), and an exhaust vent (4); the cabinet body (1) is mounted on the base (2), the exhaust vent (4) is mounted on the top opening of the cabinet body (1), and the insulated top (3) is mounted on the exhaust vent (4) using a support column (8); characterized in that: It also includes a protective structure, which includes a baffle frame (5), a roller shutter roller (6), a roller shutter positioning plate (7), and a roller shutter (9); the baffle frame (5) is installed at the bottom of the heat insulation top (3), and roller shutter rollers (6) are provided on all four sides of the baffle frame (5). A roller shutter (9) is wound on the roller shutter roller (6), and an electromagnet rod is wrapped around the bottom edge of the roller shutter (9). The electromagnet rod is magnetically attracted to the corresponding roller shutter positioning plate (7) below, and the roller shutter positioning plate (7) is fixed to the outer wall of the cabinet (1); the two sides of the roller shutter roller (6) The end shafts are all rotatably mounted in the bearing seat (14), and the bearing seat (14) is fixed to the bottom wall of the heat insulation top (3); a winding drive motor (11) is mounted on the bottom corner of the baffle frame (5) using a motor seat, and a drive gear (12) is connected to the output shaft of the winding drive motor (11). The drive gear (12) meshes with the driven gear (13) for transmission. The driven gear (13) is mounted on one end shaft of one of the roller blinds (6), and the three sets of adjacent end shafts of the four roller blinds (6) mesh with a bevel gear set (10) for transmission.

2. An outdoor power distribution cabinet with a protective structure according to claim 1, characterized in that: The cabinet (1) has ventilation holes on both sides, in which mounting frames (29) are installed. Several ventilation louvers (21) are installed in the mounting frames (29) by rotating from top to bottom using a pivot. The ventilation louvers (21) are connected by chains (23). The top ventilation louver (21) is connected to the bottom of the top plate of the mounting frame (29) by chains (23).

3. An outdoor power distribution cabinet with a protective structure according to claim 2, characterized in that: The bottom of the exhaust vent (4) is equipped with an exhaust fan, which is installed at the bottom of the top plate of the cabinet (1).

4. An outdoor power distribution cabinet with a protective structure according to claim 3, characterized in that: A suction fan (25) is provided on the outside of the mounting frame (29).

5. An outdoor power distribution cabinet with a protective structure according to claim 4, characterized in that: The outer frame of the suction fan (25) is mounted on the movable frame (15) by several connecting rods (27). The outer wall of the movable frame (15) is respectively equipped with a screw nut (16) and a linear bearing (31). The screw rod (17) is rotatably connected to the screw nut (16). The lower end of the screw rod (17) is connected to the output shaft of the lifting drive motor (18) by a coupling. The lifting drive motor (18) is mounted on the outer wall of the cabinet (1) by a fixing plate (19). The guide column (20) is movably inserted into the linear bearing (31). The lower end of the guide column (20) is connected to the output shaft of the lifting drive motor (18) by a fixing plate (19). The plate (19) is installed on the outer wall of the cabinet (1). The top of the screw rod (17) and the guide column (20) are both installed on the outer wall of the cabinet (1) using the limiting top plate. The top of the screw rod (17) and the limiting top plate are connected by a bearing. A baffle (30) is embedded in the opening of the outer wall of the moving frame (15). A clearance slot (15-1) is opened at the bottom of the moving frame (15). The clearance slot (15-1) is embedded with a snap-fit ​​plate (22-1) integrally formed on the support plate (22). The support plate (22) is fixed to the outer wall of the cabinet (1).

6. An outdoor power distribution cabinet with a protective structure according to claim 5, characterized in that: An electromagnet (26) is installed at the bottom of the top plate of the movable frame (15) using a connecting rod (27), and the electromagnet (26) is magnetically attracted to the uppermost heat dissipation louvers (21).

7. An outdoor power distribution cabinet with a protective structure according to claim 6, characterized in that: The connecting rod (27) is a telescopic rod, and its bottom end is rotatably connected to the electromagnet (26) by the connecting ball (32). The electromagnet (26) is installed on the output end of the electric telescopic rod 3 by the universal joint. The electric telescopic rod (33) is installed at the bottom of the top plate of the movable frame (15).

8. An outdoor power distribution cabinet with a protective structure according to claim 7, characterized in that: The heat insulation top (3) is a four-sided conical structure. The interior of the heat insulation top (3) is a hollow structure, and the inner walls are all equipped with heat insulation layers.

9. An outdoor power distribution cabinet with a protective structure according to claim 8, characterized in that: Its working principle is as follows: Under normal heat dissipation conditions, the cabinet (1) is installed on the base (2), and the heat insulation top (3) is mounted above the exhaust vent (4) through the support column (8). The four-sided conical heat insulation top (3) blocks direct sunlight, and its internal hollow structure and inner wall heat insulation layer further block the heat from being transferred to the cabinet (1). The exhaust fan at the bottom of the top plate of the cabinet (1) does not operate. In the mounting frame (29) inside the heat dissipation holes on both sides of the cabinet (1), the heat dissipation louvers (21) are in a naturally hanging tilted open state by their own weight and the connection of the chain (23). At this time, the moving frame (15) is located above the heat dissipation louvers (21), and the heat of the entire distribution cabinet is naturally dissipated from the exhaust vent (4) on the top plate and the heat dissipation louvers (21) on both sides. In the event of normal windy and rainy weather, the size of the heat insulation top (3) on the top of the cabinet (1) can effectively protect the exhaust vent (4) and prevent rainwater from entering. When the temperature inside the cabinet (1) is much higher than the outside temperature, the exhaust fan installed on the top of the cabinet (1) will start running. At the same time, the lifting drive motor (18) will work, driving the moving frame (15) to descend until it reaches the support plate (22). At this time, the snap-fit ​​plate (22-1) will be embedded in the clearance slot (15-1), and the electromagnet (26) will be energized and magnetized, attracting the heat dissipation louvers (21) on the top layer. At this time, several heat dissipation louvers (21) will rotate upward under the drive of the chain (23), thereby increasing the opening angle of the heat dissipation louvers (21). At this time, the suction fan (25) will start working, bringing the low-temperature air from the outside into the cabinet (1), and running upward inside the cabinet (1) to the exhaust port (4) at the top. Driven by the exhaust fan, the air will be discharged, thereby achieving the cooling of the cabinet (1). When encountering severe weather such as rainstorms or sandstorms requiring protection, the electromagnet (26) installed at the bottom of the top plate of the movable frame (15) via the connecting rod (27) is de-energized and demagnetized, releasing the attraction to the uppermost heat dissipation louvers (21); the heat dissipation louvers (21) rotate downwards around their pivot under gravity to a naturally hanging, tilted open state, closing the suction fan (25) and the exhaust fan at the top of the cabinet (1), and the cabinet (1) is in a normal heat dissipation state; at the same time, the winding drive motor (11) starts, and its output shaft drives the active gear (12) to rotate, and the active gear (12) meshes with and drives the driven gear (13) to rotate, from The moving gear (13) drives a roller shutter (6) connected to it to rotate. The roller shutter (6) is driven by the meshing of the bevel gear set (10) between adjacent end shafts, so that the four roller shutter rollers (6) on the four sides of the baffle frame (5) rotate synchronously. The roller shutter (9) wrapped around the roller shutter roller (6) is released and unfolded downwards. When the roller shutter (9) descends to the bottom, the electromagnet rod wrapped around its bottom edge is magnetically fixed to the roller shutter positioning plate (7) fixed on the outer wall of the cabinet (1), thereby blocking the four sides of the cabinet (1) and reducing the intrusion of rainwater and sand. At the same time, the normal heat dissipation airflow is discharged from the gap left between the adjacent roller shutters (9). When the weather returns to normal and the protection needs to be removed, the winding drive motor (11) rotates in reverse. Through the transmission of the driving gear (12), driven gear (13) and bevel gear set (10), it drives the four roller blinds (6) to rotate in reverse, and rolls the blind (9) back onto the roller blinds (6).

10. An outdoor power distribution cabinet with a protective structure according to claim 9, characterized in that: By controlling the extension and retraction of the electric telescopic rod (33), the height of the electromagnet (26) can be controlled, thereby adjusting the opening angle of the heat dissipation louvers (21). When the maximum amount of ventilation and heat dissipation is required, the electric telescopic rod (33) retracts to the minimum stroke position, and the electromagnet (26) magnetically attracts the heat dissipation louvers (21) to the horizontal position.

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