A switch cabinet applied to a plateau railway

Abstract

This invention relates to the technical field of switchgear, and in particular to a switchgear for use on plateau railways. It includes a switchgear body and ventilation windows located on the front and rear sides of the bottom of the switchgear body. A horizontal brushing assembly is installed inside the switchgear body. A movable cleaning brush within the horizontal brushing assembly cleans the ventilation windows at the back of the bottom of the switchgear body. The movable cleaning brush also undergoes reciprocating vertical movement during its horizontal movement. The horizontal brushing assembly includes a U-shaped movable plate and a lifting block. A frame cleaning component is installed on the lifting block. This invention, through its "segmented" cleaning path planning, ensures that the stroke of the movable cleaning brush completely covers the entire vertical surface of the ventilation windows, guaranteeing no blind spots in cleaning and overcoming the potential coverage deficiencies of unidirectional cleaning. The inside-out sweeping airflow provides a continuous and directional airflow, ensuring effective guidance and removal of dust from the switchgear body's ventilation windows and frames.

Description

Technical Field

[0001] This invention relates to the technical field of switchgear, and in particular to a switchgear for use on high-altitude railways. Background Technology

[0002] Switchgear is the core equipment of the traction power supply system of plateau railways. Its operational reliability is directly related to the safety and efficiency of railway transportation. However, as railways extend to plateau areas, switchgear faces unprecedented severe challenges. The unique climate conditions of plateau areas, such as strong winds and sandstorms, low air pressure, large temperature differences, and dry air, pose a serious threat to the long-term stable operation of switchgear, among which the problem of dust penetration and accumulation is the most prominent.

[0003] Currently, the assembly gaps between the side panels, top cover, and frame of the switchgear are another critical pathway for dust to penetrate. Existing designs mostly use static sealing strips, but under the severe temperature cycles and vibrations at high altitudes, the sealing materials are prone to aging and deformation, leading to sealing failure. More problematic is that these narrow gaps easily accumulate and harden into sand and dust, forming difficult-to-clean "grime." This not only blocks auxiliary heat dissipation channels but also becomes a continuous source of pollution. Traditional maintenance methods are insufficient to effectively clean these deep gaps. Cleaning the inside of the switchgear relies entirely on manual, periodic power outages for maintenance. Maintenance personnel open the cabinet door and use compressed air to blow or wipe manually, resulting in poor cleaning effects. Maintenance in harsh environments is difficult, and the loosened dust cannot be immediately discharged from the cabinet. This dust only temporarily suspends and eventually settles in other critical parts of the equipment, failing to fundamentally purify the internal environment of the cabinet. This leads to an increased failure rate of internal electrical equipment and reduced internal heat dissipation performance. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a switchgear for use on plateau railways.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a switchgear for plateau railways, comprising a switchgear body and heat dissipation windows disposed on the front and rear sides of the bottom of the switchgear body. A transverse brushing assembly is provided inside the switchgear body. The movable cleaning brush in the transverse brushing assembly cleans the heat dissipation windows on the back of the bottom of the switchgear body. The movable cleaning brush also reciprocates during its horizontal movement. The transverse brushing assembly includes a U-shaped movable plate and a lifting block. A frame cleaning assembly is provided on the lifting block. The side cleaning brush in the frame cleaning assembly brushes the corner frame connection points around the inside of the switchgear body. When the movable cleaning brush in the transverse brushing assembly moves up and down, it drives the side cleaning brush of the frame cleaning assembly to reciprocate up and down. The bottom of the lifting block is also equipped with a blower dust blowing component. The blower nozzle in the blower dust blowing component blows and cleans and concentrates the dust brushed off the four corner frames of the switch cabinet. The top of the switch cabinet is equipped with a sweeping swing component. The sweeping swing component is used to drive the blower nozzle to sweep and blow dust at the corner frame connection. The sweeping swing component includes an L-shaped swing rod and a fixed rotating rod.

[0006] As a preferred embodiment of the present invention, the transverse brushing assembly further includes a U-shaped fixed base and a drive gear. The U-shaped fixed base is fixedly installed at the center of the heat dissipation window on the rear bottom side of the switch cabinet. Fixed grooves are provided on both sides inside the U-shaped fixed base. Fixed sliders are movably arranged in the fixed grooves. The lifting block is movably arranged on the U-shaped fixed base, and the fixed sliders are fixedly installed on both sides of the lifting block. U-shaped support bases are fixedly installed at the upper and lower ends of the lifting block on the side away from the U-shaped fixed base, and the U-shaped movable plate moves between the U-shaped support bases.

[0007] The U-shaped support base has a T-shaped groove inside, and a T-shaped slider is slidably connected in the T-shaped groove. The T-shaped slider is fixedly installed on the U-shaped movable plate. A U-shaped rack frame is fixedly installed on the side of the U-shaped movable plate away from the U-shaped fixed base. A motor base plate is fixedly installed on the bottom of the switch cabinet by bolts. A rotary motor is fixedly installed on the top of the motor base plate. A drive gear is fixedly installed on the output end of the rotary motor. The drive gear is movably meshed with the U-shaped rack frame, and the drive gear moves inside the U-shaped rack frame. Arc-shaped connecting rods are fixedly installed at both ends of the U-shaped movable plate, and a movable cleaning brush is fixedly installed on the arc-shaped connecting rods.

[0008] As a preferred embodiment of the present invention, the frame cleaning assembly further includes a first support rod and a second support rod. The first support rod is fixedly installed at the top of the lifting block by bolts, and the second support rod is fixedly installed at the bottom of the lifting block by bolts. Both the first support rod and the second support rod have an arc-shaped connecting rod fixedly installed at the end away from the lifting block. The side cleaning brush located inside the rear of the switch cabinet is fixedly installed on the arc-shaped connecting rod.

[0009] A fixed cleaning brush is provided on the front side of the bottom of the switch cabinet. The fixed cleaning brush cleans the heat dissipation window on the front side of the bottom of the switch cabinet. A fixed cleaning rod is fixedly installed between the side cleaning brush located on the rear side of the switch cabinet and the side cleaning brush located on the front side of the switch cabinet. The two ends of the fixed cleaning brush are fixedly installed between the side cleaning brush located on the front side of the switch cabinet.

[0010] As a preferred embodiment of the present invention, the blower dust removal assembly further includes a blower duct and a blower dust removal base. The blower duct is fixedly installed on one side of the bottom of the U-shaped fixed base in the switch cabinet. A cleaning piston plate is movably arranged inside the blower duct. A cleaning piston rod is fixedly installed on the top of the cleaning piston plate, and the top of the cleaning piston rod extends movably through to the top outer side of the blower duct. A T-shaped cleaning rod is fixedly installed on the bottom of the lifting block, and the top of the cleaning piston rod is fixedly installed at the bottom of the T-shaped cleaning rod.

[0011] The bottom of the blower is provided with an air outlet pipe and an air inlet pipe. Fixed rotating rods are fixedly installed around the top of the switch cabinet. Blower dust blowers are movably connected to the fixed rotating rods, and blower nozzles are evenly installed at the bottom of the blower dust blowers. The air outlet pipe is connected to the blower dust blowers. The blower dust blowers are all located on the top side of the side cleaning brush. A dust collection trough is provided inside the switch cabinet at the bottom of the front and rear heat dissipation windows.

[0012] As a preferred embodiment of the present invention, the air-sweeping swing assembly further includes a supporting rotating rod and a connecting rotating rod. A connecting rotating rod is fixedly installed on the top side of the fixed rotating rod on the switch cabinet. An L-shaped swing rod is movably connected to the top of the connecting rotating rod. A push seat is movably connected to the end of the L-shaped swing rod away from the heat dissipation window via a rotating shaft. An arc-shaped limiting groove is opened at the other end of the L-shaped swing rod. An arc-shaped limiting rod is movably arranged in the arc-shaped limiting groove and is fixedly installed on the blower dust base. A side connecting rod is fixedly installed on the top of the side cleaning brush. The top of the side connecting rod is fixedly installed at the bottom of the push seat.

[0013] Compared with the prior art, the beneficial effects that this invention can achieve are: In this invention, the rotational motion of the drive gear in the horizontal brushing assembly is converted into precise horizontal linear motion of the rack frame. When the drive gear meshes with the bottom linear segment of the rack frame, it drives the movable cleaning brush to move horizontally, accurately covering and cleaning the bottom area of ​​the heat dissipation window. When the drive gear rotates to mesh with the top linear segment of the rack frame, the direction of motion reverses, and the movable cleaning brush then performs horizontal brushing cleaning on the top area of ​​the heat dissipation window. Through the "segmented" cleaning path planning, the stroke of the movable cleaning brush can completely cover the entire vertical surface of the heat dissipation window, ensuring no blind spots in cleaning and overcoming the problem of insufficient coverage that may exist in cleaning in a single direction.

[0014] In this invention, the stable mechanical brushing of the horizontal brushing component effectively removes stubborn dust. Furthermore, the scraped dust is guided directly to the dust collection trough below via a preset cleaning path. This integrated design of brushing and collection avoids secondary dust re-entrainment, achieves orderly collection and centralized treatment of dirt, and greatly simplifies subsequent maintenance work. It is suitable for harsh working conditions with high dust and large temperature differences on plateau railway sites, ensuring the long-term stable operation of the cleaning function. It transforms a single rotational motion into a controllable bidirectional segmented linear cleaning motion, thereby achieving efficient, comprehensive, and stable automated cleaning and dust collection of switchgear heat dissipation windows, fundamentally solving the technical problem of heat dissipation windows being easily clogged by dust in plateau environments.

[0015] In this invention, when the drive gear in the transverse brushing assembly meshes with the arc transition sections at both ends of the rack frame, its effect far exceeds simple direction switching. At this time, the rotational motion of the drive gear, guided by the arc section, smoothly transitions the movable plate from horizontal reciprocating motion to reverse motion. Simultaneously, it drives the rigidly connected lifting block to generate precise vertical lifting motion under the constraint of the U-shaped fixed base. The lifting block, as the power source for vertical motion, transmits power to the fixed cleaning rod through the first and second support rods and the arc connecting rod, ultimately driving the side cleaning brushes installed around the inside of the switch cabinet to perform synchronous lifting motion. The up-and-down reciprocating motion of the side cleaning brushes can effectively penetrate the assembly gaps between the cabinet side panels and the frame. This vertical brushing mode is particularly beneficial for removing stubborn dust and sand embedded in the gaps under the action of gravity and wind pressure, solving the problem of cleaning hard-to-reach corners in daily maintenance and ensuring unobstructed heat dissipation paths on the side walls.

[0016] In this invention, the side cleaning brush in the frame cleaning component acts as a "dynamic dustproof sealing strip" during normal cabinet operation. Its multi-angle, spaced rubber brush design forms a non-completely sealed flexible barrier, which can effectively block most dust and sand from entering the cabinet through gaps. The spaced design ensures that airflow can still circulate through the gaps, avoiding the negative impact of complete sealing on heat dissipation performance. It achieves an excellent balance between dust prevention and heat dissipation. It cleverly utilizes the geometric features of the "U-shaped rack frame" to simultaneously drive two major functions: cleaning the horizontal heat dissipation windows and cleaning and sealing the vertical gaps. Through continuous or periodic active cleaning and dynamic sealing, the risk of overheating or insulation failure caused by dust accumulation is greatly reduced.

[0017] In this invention, while the side cleaning brush in the frame cleaning component scrapes the gaps, the blower nozzle installed on the blower dust base simultaneously sprays airflow into the cleaning area. This instantly blows away the dust and sand that the side cleaning brush has just scraped off, which are still suspended or not completely detached from the gap area. By precisely adjusting the nozzle angle and airflow intensity, the blown dust and impurities are forcibly guided to the pre-set dust collection groove at the bottom, or completely blown away from the outer periphery of the cabinet body. This effectively avoids the dispersion and secondary settling of impurities in other areas inside the cabinet. A portion of the airflow from the blower nozzle is designed to be used to reverse-blow the side cleaning brush body. This can promptly remove the fine dust and impurities adhering to the brush body fibers, preventing the brush body itself from becoming a new source of dust, thereby maintaining its optimal cleaning performance and elasticity, extending its service life, and fundamentally solving the pain points of incomplete gap cleaning and secondary dust re-entrainment.

[0018] In this invention, when the lifting block in the transverse brush assembly moves stably up and down within the U-shaped fixed base, the side connecting rod in the air-sweeping swing assembly drives the top push seat to move synchronously. The push seat drives the connecting rotating rod, thereby causing the L-shaped swing rod to rotate. The L-shaped swing rod, through its arc-shaped limiting groove, cooperates with the arc-shaped limiting rod installed on the fixed rotating rod to form a precise spatial motion constraint. This transforms the planar rotation of the L-shaped swing rod into the rotational swing of the entire blower dust-blowing seat on the fixed rotating rod at a specific angle in the vertical plane. During the swinging process, the airflow sweeps the cleaning area in a fan shape, avoiding dead corners that exist in fixed blowing, resulting in more comprehensive cleaning coverage. The airflow path is designed to point from the inside of the cabinet to the outside, forming a clear dust discharge path. This allows the dust and sand scraped off by the side cleaning brush to be thoroughly blown to the dust collection tank at the bottom or directly discharged outside the cabinet, ensuring that the removed contaminants do not circulate inside the cabinet or adhere to sensitive electrical components.

[0019] In this invention, while the side cleaning brush in the frame cleaning component is working, the airflow from the inside out by the swinging component creates a transient positive pressure barrier in the gaps, effectively preventing external dust from entering during the cleaning process. This improves the reliability of the cleaning operation and efficiently handles the high density and strong adhesion of sand and gravel unique to high-altitude areas. The continuous directional airflow provided by the dynamic sweeping ensures that even heavier particles can be effectively guided and removed, greatly reducing the risk of short circuits and insulation creepage caused by dust accumulation inside the switch cabinet. This fundamentally ensures the long-term cleanliness and safety of the electrical environment inside the switch cabinet in high-altitude areas. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the heat dissipation window structure of the present invention; Figure 3This is a schematic diagram of the structure of the fixed cleaning brush of the present invention; Figure 4 This is a schematic diagram of the U-shaped fixing base of the present invention; Figure 5 This is a schematic diagram of the structure of the spiral-shaped movable plate of the present invention; Figure 6 This is a schematic diagram of the structure of the blower of the present invention; Figure 7 This is a schematic diagram of the side connecting rod of the present invention; Figure 8 This is a schematic diagram of the structure of the blower dust removal seat of the present invention.

[0021] The components include: 10. Switch cabinet; 11. Ventilation window; 12. Dust collection trough; 20. Movable cleaning brush; 21. U-shaped fixed base; 22. Fixed slide rail; 23. Fixed slider; 24. Lifting block; 25. U-shaped support base; 26. T-shaped slide rail; 27. T-shaped slider; 28. Arc-shaped connecting rod; 30. U-shaped movable plate; 31. U-shaped rack frame; 32. Motor base plate; 33. Rotary motor; 34. Drive gear; 40. Side cleaning brush; 41. First support rod. ; 42. Second support rod; 43. Arc-shaped connecting rod; 44. Fixed cleaning brush; 45. Fixed cleaning rod; 50. Blower; 51. Blower dust blower seat; 52. Cleaning piston plate; 53. Cleaning piston rod; 54. T-shaped cleaning rod; 55. Air outlet pipe; 56. Air inlet pipe; 57. Fixed rotating rod; 58. Blower nozzle; 60. Side connecting rod; 61. Connecting rotating rod; 62. L-shaped swing rod; 63. Push seat; 64. Arc-shaped limiting groove; 65. Arc-shaped limiting rod. Detailed Implementation

[0022] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0023] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, a switchgear for use on plateau railways includes a switchgear body 10 and heat dissipation windows 11 located on the front and rear sides of the bottom of the switchgear body 10. A transverse brush assembly is installed inside the switchgear body 10. A movable cleaning brush 20 within the transverse brush assembly cleans the heat dissipation windows 11 on the back of the bottom of the switchgear body 10. The movable cleaning brush 20 also undergoes reciprocating lifting motion during horizontal movement. The transverse brush assembly includes a U-shaped movable plate 30, a lifting block 24, a U-shaped fixed base 21, and a drive gear 34. The switchgear body 10 is fixedly mounted at the center of the heat dissipation windows 11 on the rear side of the bottom. The device is equipped with a U-shaped fixed base 21. Fixed grooves 22 are provided on both sides inside the U-shaped fixed base 21. Fixed sliders 23 are movably arranged in the fixed grooves 22. Lifting blocks 24 are movably arranged on the U-shaped fixed base 21, and the fixed sliders 23 are fixedly installed on both sides of the lifting blocks 24. The fixed sliders 23 and the fixed grooves 22 enable the lifting blocks 24 to move smoothly and stably in the U-shaped fixed base 21. U-shaped support bases 25 are fixedly installed at the upper and lower ends of the lifting blocks 24 on the side away from the U-shaped fixed base 21, and the U-shaped movable plate 30 moves between the U-shaped support bases 25.

[0024] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The U-shaped support base 25 has a T-shaped groove 26 inside, and a T-shaped slider 27 is slidably connected in the T-shaped groove 26. The T-shaped slider 27 is fixedly installed on the U-shaped movable plate 30, so that the U-shaped movable plate 30 can achieve stable horizontal reciprocating motion under the action of the T-shaped slider 27 and the T-shaped groove 26. A U-shaped rack frame 31 is fixedly installed on the side of the U-shaped movable plate 30 away from the U-shaped fixed base 21. The inner bottom of the switch cabinet 10 is fixedly installed with a motor base plate 32 by bolts, and the top of the motor base plate 32 is fixed. A rotary motor 33 is installed, and a drive gear 34 is fixedly installed on the output end of the rotary motor 33. The drive gear 34 is movably meshed with the rack frame 31, and the drive gear 34 moves inside the rack frame 31. Arc-shaped connecting rods 28 are fixedly installed at both ends of the movable plate 30. A movable cleaning brush 20 is fixedly installed on the arc-shaped connecting rods 28, and the movable cleaning brush 20 moves against the heat dissipation window 11 at the bottom rear side of the switch cabinet 10. The movable cleaning brush 20 scrapes and cleans the heat dissipation window 11.

[0025] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The rotary motor 33 on the motor base plate 32 drives the drive gear 34 to rotate. The drive gear 34 meshes with the loop rack frame 31, causing the loop movable plate 30 to move horizontally back and forth between the U-shaped support base 25. When the drive gear 34 rotates and meshes with the bottom straight section of the loop rack frame 31, the loop movable plate 30 on the loop rack frame 31, through the arc-shaped connecting rod 28, carries the movable cleaning brush 20 to horizontally brush and clean the bottom position of the heat dissipation window 11 on the rear side of the bottom of the switch cabinet 10. When the drive gear 34 rotates and meshes with the top straight section of the loop rack frame 31, the loop... The U-shaped movable plate 30 on the rack frame 31, through the arc-shaped connecting rod 28, carries the movable cleaning brush 20 to perform horizontal brushing cleaning on the top position of the heat dissipation window 11 at the bottom rear side of the switch cabinet 10. The drive gear 34, in conjunction with the U-shaped rack frame 31, carries the movable cleaning brush 20 to perform vertical cleaning of the rear heat dissipation window 11. The vertical horizontal cleaning greatly improves the cleaning ability of the heat dissipation window 11. At the same time, the movable cleaning brush 20 can cover the heat dissipation window 11 in all directions, effectively and stably cleaning and scraping the dust adhering to the heat dissipation window 11, and scraping the dust from the heat dissipation window 11 down into the dust collection tank 12 for collection.

[0026] See Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The lifting block 24 is equipped with a frame cleaning component. The side cleaning brush 40 in the frame cleaning component brushes the corner frame connection points around the inside of the switch cabinet 10. When the horizontal brushing component moves up and down, the movable cleaning brush 20 drives the side cleaning brush 40 of the frame cleaning component to move up and down. The frame cleaning component also includes a first support rod 41 and a second support rod 42. The first support rod 41 is fixedly installed on the top of the lifting block 24 by bolts, and the second support rod 42 is fixedly installed on the bottom of the lifting block 24 by bolts. Both the first support rod 41 and the second support rod 42 are fixedly installed with an arc-shaped connecting rod 43 at the end away from the lifting block 24. The side cleaning brush 40 located on the rear side inside the switch cabinet 10 is fixedly installed on the arc-shaped connecting rod 43. The lifting power of the lifting block 24 is transmitted to the side cleaning brush 40 through the arc-shaped connecting rod 43.

[0027] See Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7A fixed cleaning brush 44 is provided on the front side of the bottom of the switch cabinet 10. The fixed cleaning brush 44 cleans the heat dissipation window 11 on the front side of the bottom of the switch cabinet 10. A fixed cleaning rod 45 is fixedly installed between the side cleaning brush 40 located on the rear side of the switch cabinet 10 and the side cleaning brush 40 located on the front side of the switch cabinet 10. The two ends of the fixed cleaning brush 44 are fixedly installed between the side cleaning brush 40 located on the front side of the switch cabinet 10. The side cleaning brush 40 around the inside of the switch cabinet 10 is connected by the fixed cleaning rod 45, so that the lifting block 24 can move the side cleaning brush 40 around the inside of the switch cabinet 10 in a linkage lifting motion. Several rubber brushes are evenly installed on the side cleaning brush 40.

[0028] See Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 When the drive gear 34 meshes with the arc segments at both ends of the rack frame 31, the drive gear 34 will move up and down in the U-shaped fixed base 21 through the rack frame 31, carrying the movable plate 30 and the lifting block 24. In other words, when the drive gear 34 meshes with the two ends of the rack frame 31, the drive gear 34 will switch between the upper and lower straight segments of the rack frame 31, which can realize the switching of the upper and lower horizontal movement of the movable plate 30, and also stably realize the lifting block 24 in the U-shaped fixed base 21. See Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 During its lifting motion, the lifting block 24 carries the first support rod 41 and the second support rod 42 in a synchronized lifting motion. The first support rod 41 and the second support rod 42, connected by the arc-shaped connecting rod 43 and the fixed cleaning rod 45, simultaneously carry the side cleaning brushes 40 around the inside of the switch cabinet 10 in a synchronized lifting motion. At this time, the side cleaning brushes 40 can clean the dust and sand in the gaps between the side panels and the cabinet body around the switch cabinet 10. The side cleaning brushes 40 clean the dust and sand in the gaps during their up-and-down lifting motion. The cleaning effect is good, effectively removing dust and accumulated sand from gaps, greatly improving heat dissipation around the switch cabinet 10. Furthermore, during daily operation, the side cleaning brush 40 effectively blocks dust and sand from the gaps around the switch cabinet 10. The side cleaning brush 40 effectively blocks dust by using its rubber brushes to block dust from multiple angles, increasing dust prevention inside the switch cabinet 10. At the same time, the spaced rubber brushes do not affect the heat dissipation of the switch cabinet 10.

[0029] See Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The bottom of the lifting block 24 is also equipped with a blower dust blowing assembly. The blower nozzle 58 in the blower dust blowing assembly blows and cleans and concentrates the dust brushed off the four corner frames of the switch cabinet 10 by the side cleaning brush 40. The blower dust blowing assembly also includes a blower duct 50 and a blower dust blowing seat 51. The blower duct 50 is fixedly installed on one side of the bottom of the switch cabinet 10 located on the U-shaped fixed base 21. A cleaning piston plate 52 is movably installed inside the blower duct 50. A cleaning piston rod 53 is fixedly installed on the top of the cleaning piston plate 52, and the top of the cleaning piston rod 53 movably extends through to the top outside of the blower duct 50. A T-shaped cleaning rod 54 is fixedly installed at the bottom of the lifting block 24, and the top of the cleaning piston rod 53 is fixedly installed at the bottom of the T-shaped cleaning rod 54.

[0030] See Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The bottom of the blower 50 is provided with an air outlet pipe 55 and an air inlet pipe 56. One-way valves are fixedly installed on both the air inlet pipe 56 and the air outlet pipe 55. The one-way valve on the air inlet pipe 56 allows the blower 50 to be filled with gas in one direction, and the one-way valve on the air outlet pipe 55 allows the compressed air inside the blower 50 to be discharged in one direction. Fixed rotating rods 57 are fixedly installed around the top of the switch cabinet 10. Blower dust blower seats 51 are movably connected to the fixed rotating rods 57, and blower nozzles 58 are evenly installed at the bottom of the blower dust blower seats 51. The air outlet pipe 55 is connected to the blower dust blower seats 51. The blower dust blower seats 51 are all located on the top side of the side cleaning brush 40. A dust collection trough 12 is provided inside the switch cabinet 10 at the bottom of the front and rear heat dissipation windows 11. The dust and sand under the heat dissipation windows 11 and the four side gaps are collected through the dust collection trough 12.

[0031] See Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7When the lifting block 24 is descending, the T-shaped cleaning rod 54 drives the cleaning piston rod 53 to descend synchronously. The cleaning piston rod 53 will drive the cleaning piston plate 52 to descend inside the blower 50. At this time, the cleaning piston plate 52 generates positive pressure inside the blower 50. The compressed air inside the blower 50 will enter the blower dust holder 51 through the air outlet pipe 55. Then, the blower nozzle 58 under the blower dust holder 51 will blow air to clean the inside of the switch cabinet 10. The blower nozzle 58 will blow away the dust and sand scraped off by the side cleaning brush 40, so that the scraped dust and sand will not remain in the gaps around the switch cabinet 10. The blower air carries the dust and impurities into the dust collection tank 12 or the outer periphery of the switch cabinet 10. Similarly, when the lifting block 24 rises, the cleaning piston plate 52 inside the blower 50 moves synchronously upward through the T-shaped cleaning rod 54 and the cleaning piston rod 53. At this time, the cleaning piston plate 52 generates negative pressure inside the blower 50, and the blower 50 will be filled with gas through the air inlet pipe 56 in preparation for the next pressurization of the blower 50. The dust blower nozzle 58, together with the side cleaning brush 40, thoroughly cleans the dust and impurities behind the gaps around the switch cabinet 10, improving the heat dissipation effect inside the switch cabinet 10. The blower nozzle 58 also blows air from the side to the side to the side to clean the dust and impurities adhering to the side cleaning brush 40, improving the cleaning effect of the side cleaning brush 40 on the switch cabinet 10 in the future.

[0032] See Figure 3 , Figure 4 , Figure 5 Figure 6 , Figure 7 and Figure 8The top of the switch cabinet 10 is equipped with a sweeping swing assembly. The sweeping swing assembly is used to drive the blower nozzle 58 to sweep and blow dust from the corner frame connection. The sweeping swing assembly includes an L-shaped swing rod 62, a fixed rotating rod 57, a supporting rotating rod 60, and a connecting rotating rod 61. The connecting rotating rod 61 is fixedly installed on the top side of the fixed rotating rod 57 on the switch cabinet 10. The L-shaped swing rod 62 is movably connected to the top of the connecting rotating rod 61. The end of the L-shaped swing rod 62 away from the heat dissipation window 11 is movably connected to a push seat 63 through a rotating shaft. The other end of the L-shaped swing rod 62 is provided with an arc-shaped limiting groove 64. The central part is equipped with an arc-shaped limiting rod 65, which is fixedly installed on the blower dust base 51. The top of the side cleaning brush 40 is fixedly installed with a side connecting rod 60. The top of the side connecting rod 60 is fixedly installed at the bottom of the push seat 63. When the push seat 63 is raised or lowered, the L-shaped swing rod 62 will rotate around the connecting rotating rod 61. During the rotation, the other end of the L-shaped swing rod 62 will cause the blower dust base 51 to flip and swing around the fixed rotating rod 57 through the action of the arc-shaped limiting rod 65 and the arc-shaped limiting groove 64, thereby adjusting the blowing angle of the blower nozzle 58 under the blower dust base 51.

[0033] See Figure 3 , Figure 4 , Figure 5 Figure 6 , Figure 7 and Figure 8 When the lifting block 24 moves stably up and down in the U-shaped fixed base 21, the lifting block 24, through the side connecting rod 60, drives the push seat 63 to move up and down synchronously around the inner top of the switch cabinet 10. During the lifting and lowering process, the push seat 63 drives the L-shaped swing rod 62 on the connecting rotating rod 61 to rotate. The L-shaped swing rod 62 will drive the blower dust blower seat 51 on the fixed rotating rod 57 to rotate and swing through the arc-shaped limiting groove 64 and the arc-shaped limiting rod 65. The blower nozzle 58 under the blower dust blower seat 51 will move from the downward state towards the side cleaning brush 40. The blower nozzle 58 sweeps air around the gaps of the switch cabinet 10, causing the blower nozzle 58 to sweep during the blowing process. This sweeping air moves from the inside of the switch cabinet 10 to the side, creating an outward sweeping effect. This allows the dust and sand scraped off by the side cleaning brush 40 to be blown to the dust collection tank 12 at the bottom or to the outside of the switch cabinet 10. The cleaned dust and sand impurities will not re-adhere to the electrical equipment inside the switch cabinet 10, improving the cleanliness of the electrical equipment inside the switch cabinet 10. This ensures that the sand and dust caused by the high-altitude climate will not affect the internal circuitry of the switch cabinet 10.

[0034] Working Principle: A 27.5kV switchgear is used to supply traction power to the electrified railway in the plateau region. The switchgear is ventilated through heat dissipation windows 11 on both the front and rear sides of the bottom. An electrical conduit connects to the middle of the back of the switchgear, with a gap between the bottom of the back of the switchgear and the electrical conduit. When the switchgear 10 undergoes annual or quarterly maintenance, the rotary motor 33 on the motor base plate 32 drives the drive gear 34 to rotate. The drive gear 34 meshes with the loop rack frame 31, causing the loop movable plate 30 to move horizontally back and forth between the U-shaped support base 25. When the drive gear 34 rotates and meshes with the straight section at the bottom of the loop rack frame 31, the loop movable plate 30 on the loop rack frame 31, through the arc-shaped connecting rod 28, carries the movable cleaning brush 20 to the switch... The bottom of the heat dissipation window 11 on the rear side of the cabinet 10 is cleaned by horizontal brushing. When the drive gear 34 rotates and meshes with the top straight section of the rack frame 31, the movable plate 30 on the rack frame 31, through the arc connecting rod 28, carries the movable cleaning brush 20 to clean the top of the heat dissipation window 11 on the rear side of the switch cabinet 10 by horizontal brushing. The drive gear 34, in conjunction with the rack frame 31, carries the movable cleaning brush 20 to clean the rear heat dissipation window 11 in sections from top to bottom. The horizontal cleaning in sections from top to bottom greatly improves the cleaning ability of the heat dissipation window 11. At the same time, the movable cleaning brush 20 can cover the heat dissipation window 11 in all directions, effectively and stably cleaning and scraping the dust adhering to the heat dissipation window 11, and scraping the dust from the heat dissipation window 11 down into the dust collection tank 12 for collection.

[0035] When the drive gear 34 meshes with the arc segments at both ends of the rack frame 31, the drive gear 34 will move up and down in the U-shaped fixed base 21, carrying the movable plate 30 and the lifting block 24 through the rack frame 31. In other words, when the drive gear 34 meshes with both ends of the rack frame 31, it will switch between the upper and lower straight segments of the rack frame 31, thus achieving both the switching of the horizontal movement of the movable plate 30 and the stable lifting movement of the lifting block 24 within the U-shaped fixed base 21. During this lifting movement, the lifting block 24 will move up and down synchronously with the first support rod 41 and the second support rod 42. The first support rod 41 and the second support rod 42, through the arc-shaped connecting rod 43 and the fixed cleaning rod 45, carry the side cleaning brushes around the inside of the switch cabinet 10. The side cleaning brush 40 moves synchronously up and down, during which it cleans the dust and sand in the gaps between the side panels and the cabinet body around the switch cabinet 10. The side cleaning brush 40 cleans the dust and sand in the gaps during its up-and-down movement, providing a good cleaning effect and removing hard-to-clean dust and accumulated sand, greatly improving the heat dissipation around the switch cabinet 10. Furthermore, during daily operation, the side cleaning brush 40 effectively blocks dust and sand from the gaps around the switch cabinet 10. The rubber brush of the side cleaning brush 40 blocks dust from multiple angles, increasing the dust prevention effect inside the switch cabinet 10. At the same time, the spaced rubber brushes do not affect the heat dissipation of the switch cabinet 10.

[0036] When the lifting block 24 descends, the cleaning piston rod 53 moves synchronously downwards via the T-shaped cleaning rod 54. The cleaning piston rod 53 moves downwards along with the cleaning piston plate 52 inside the blower duct 50. At this time, the cleaning piston plate 52 generates positive pressure inside the blower duct 50. The compressed air inside the blower duct 50 enters the blower dust holder 51 through the air outlet pipe 55, and then blows air through the blower nozzle 58 under the blower dust holder 51 to clean the inside of the switch cabinet 10. The blower nozzle 58 blows away the dust and sand scraped off by the side cleaning brush 40, so that the scraped dust and sand will not remain in the gaps around the switch cabinet 10. The blower air carries the dust and impurities into the dust collection tank 12 or the outer perimeter of the switch cabinet 10. Similarly, when the lifting block 24 descends, the cleaning piston rod 53 moves synchronously downwards along with the T-shaped cleaning rod 54. When the lowering block 24 rises, it moves the cleaning piston plate 52 inside the blower 50 in sync with the T-shaped cleaning rod 54 and the cleaning piston rod 53. At this time, the cleaning piston plate 52 generates negative pressure inside the blower 50, and the blower 50 will be filled with gas through the air inlet pipe 56 in preparation for the next pressurization of the blower 50. The dust blower nozzle 58, together with the side cleaning brush 40, thoroughly cleans the dust and impurities behind the gaps around the switch cabinet 10, improving the heat dissipation effect inside the switch cabinet 10. The blower nozzle 58 also blows air from the side to the side to the side to the side to clean the dust and impurities adhering to the side cleaning brush 40, improving the cleaning effect of the side cleaning brush 40 on the switch cabinet 10 in the future.

[0037] When the lifting block 24 moves stably up and down in the U-shaped fixed base 21, the lifting block 24, through the side connecting rod 60, drives the push seat 63 to move up and down synchronously around the inner top of the switch cabinet 10. During the lifting and lowering process, the push seat 63 drives the L-shaped swing rod 62 on the connecting rotating rod 61 to rotate. The L-shaped swing rod 62 will drive the blower dust blower seat 51 on the fixed rotating rod 57 to rotate and swing through the arc-shaped limiting groove 64 and the arc-shaped limiting rod 65. The blower nozzle 58 under the blower dust blower seat 51 will move from the downward position towards the side cleaning brush 40. The blower nozzle 58 sweeps air around the gaps of the switch cabinet 10, causing the blower nozzle 58 to sweep during the blowing process. This sweeping air moves from the inside of the switch cabinet 10 to the side, creating an outward sweeping effect. This allows the dust and sand scraped off by the side cleaning brush 40 to be blown to the dust collection tank 12 at the bottom or to the outside of the switch cabinet 10. The cleaned dust and sand impurities will not re-adhere to the electrical equipment inside the switch cabinet 10, improving the cleanliness of the electrical equipment inside the switch cabinet 10. This ensures that the sand and dust caused by the high-altitude climate will not affect the internal circuitry of the switch cabinet 10.

[0038] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A switchgear for use on plateau railways, comprising a switchgear body and heat dissipation windows disposed on the front and rear sides of the bottom of the switchgear body, characterized in that, The switch cabinet is equipped with a horizontal brushing component. The movable cleaning brush in the horizontal brushing component cleans the heat dissipation window at the bottom and back of the switch cabinet. The movable cleaning brush also reciprocates during the horizontal movement. The horizontal brushing component includes a U-shaped movable plate and a lifting block. The lifting block is equipped with a frame cleaning component. The side cleaning brush in the frame cleaning component brushes the corner frame connection points around the inside of the switch cabinet. When the movable cleaning brush in the horizontal brushing component moves up and down, it drives the side cleaning brush of the frame cleaning component to reciprocate up and down. The bottom of the lifting block is also equipped with a blower dust blowing component. The blower nozzle in the blower dust blowing component blows and cleans and concentrates the dust brushed off the four corner frames of the switch cabinet. The top of the switch cabinet is equipped with a sweeping swing component. The sweeping swing component is used to drive the blower nozzle to sweep and blow dust at the corner frame connection. The sweeping swing component includes an L-shaped swing rod and a fixed rotating rod.

2. A switchgear for use on plateau railways according to claim 1, characterized in that, The horizontal brushing component also includes a U-shaped fixed base and a drive gear. The U-shaped fixed base is fixedly installed at the center of the heat dissipation window on the bottom rear side of the switch cabinet. Fixed grooves are opened on both sides inside the U-shaped fixed base. Fixed sliders are movably arranged in the fixed grooves. The lifting block is movably arranged on the U-shaped fixed base, and the fixed sliders are fixedly installed on both sides of the lifting block. U-shaped support bases are fixedly installed at the upper and lower ends of the lifting block on the side away from the U-shaped fixed base, and the U-shaped movable plate moves between the U-shaped support bases.

3. A switchgear for use on plateau railways according to claim 2, characterized in that, The U-shaped support base has a T-shaped groove inside, and a T-shaped slider is slidably connected in the T-shaped groove. The T-shaped slider is fixedly installed on the U-shaped movable plate. A U-shaped rack frame is fixedly installed on the side of the U-shaped movable plate away from the U-shaped fixed base. A motor base plate is fixedly installed on the bottom of the switch cabinet by bolts. A rotary motor is fixedly installed on the top of the motor base plate. A drive gear is fixedly installed on the output end of the rotary motor. The drive gear is movably meshed with the U-shaped rack frame, and the drive gear moves inside the U-shaped rack frame. Arc-shaped connecting rods are fixedly installed at both ends of the U-shaped movable plate, and a movable cleaning brush is fixedly installed on the arc-shaped connecting rods.

4. A switchgear for use on plateau railways according to claim 1, characterized in that, The frame cleaning assembly also includes a first support rod and a second support rod. The first support rod is fixedly installed at the top of the lifting block by bolts, and the second support rod is fixedly installed at the bottom of the lifting block by bolts. Both the first support rod and the second support rod have an arc-shaped connecting rod fixedly installed at the end away from the lifting block. The side cleaning brush located inside the rear of the switch cabinet is fixedly installed on the arc-shaped connecting rod.

5. A switchgear for use on plateau railways according to claim 4, characterized in that, A fixed cleaning brush is provided on the front side of the bottom of the switch cabinet. The fixed cleaning brush cleans the heat dissipation window on the front side of the bottom of the switch cabinet. A fixed cleaning rod is fixedly installed between the side cleaning brush located on the rear side of the switch cabinet and the side cleaning brush located on the front side of the switch cabinet. The two ends of the fixed cleaning brush are fixedly installed between the side cleaning brush located on the front side of the switch cabinet.

6. A switchgear for use on plateau railways according to claim 1, characterized in that, The blower dust removal assembly also includes a blower duct and a blower dust removal base. The blower duct is fixedly installed on one side of the bottom of the U-shaped fixed base in the switch cabinet. A cleaning piston plate is movably arranged inside the blower duct. A cleaning piston rod is fixedly installed on the top of the cleaning piston plate, and the top of the cleaning piston rod extends movably through to the top outer side of the blower duct. A T-shaped cleaning rod is fixedly installed on the bottom of the lifting block, and the top of the cleaning piston rod is fixedly installed at the bottom of the T-shaped cleaning rod.

7. A switchgear for use on plateau railways according to claim 6, characterized in that, The bottom of the blower is provided with an air outlet pipe and an air inlet pipe. Fixed rotating rods are fixedly installed around the top of the switch cabinet. Blower dust blowers are movably connected to the fixed rotating rods, and blower nozzles are evenly installed at the bottom of the blower dust blowers. The air outlet pipe is connected to the blower dust blowers. The blower dust blowers are all located on the top side of the side cleaning brush. A dust collection trough is provided inside the switch cabinet at the bottom of the front and rear heat dissipation windows.

8. A switchgear for use on plateau railways according to claim 7, wherein the air-sweeping swing assembly further includes a side connecting rod and a connecting rotating rod. A connecting rotating rod is fixedly installed on the top side of the switchgear body located on the fixed rotating rod. An L-shaped swing rod is movably connected to the top of the connecting rotating rod. A push seat is movably connected to the end of the L-shaped swing rod away from the heat dissipation window via a rotating shaft. An arc-shaped limiting groove is opened at the other end of the L-shaped swing rod. An arc-shaped limiting rod is movably arranged in the arc-shaped limiting groove and is fixedly installed on the blower dust base. A side connecting rod is fixedly installed on the top of the side cleaning brush. The top of the side connecting rod is fixedly installed at the bottom of the push seat.

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