New energy energy-saving transformer with protection structure

Abstract

The invention provides a new energy energy-saving transformer with a protection structure, belongs to the technical field of energy-saving transformers, and solves the technical problems that an existing energy-saving transformer depends on natural air to dissipate heat, fallen leaves cannot be cleaned, sundries are accumulated, birds nest and the like. Comprising a transformer body, a water-cooling heat dissipation assembly, a hydraulic reciprocating mechanism, two telescopic cleaning assemblies and two rails, cooling fins of the transformer body are located in the water-cooling heat dissipation assembly, the hydraulic reciprocating mechanism is arranged in the middle of the upper end of the transformer body, and the two rails are both fixed to the upper end of the transformer body; the two telescopic sweeping assemblies are arranged on the two sides of the moving part of the hydraulic reciprocating movement mechanism correspondingly, and the telescopic ends of the two telescopic sweeping assemblies are slidably arranged on the rails on the same side correspondingly. The transformer is cleaned while efficient heat dissipation is achieved, accumulation of fallen leaves and sundries and nesting of birds are avoided, and the transformer is protected against the risks of overheating, corrosion, pollution and short circuit.

Description

Technical Field

[0001] The invention belongs to the technical field of energy-saving transformers and relates to a new energy energy-saving transformer with a protection structure. Background Art

[0002] With the rapid development of the new energy industry, new energy energy-saving transformers, as key equipment for power conversion and transmission, are becoming increasingly important, placing high operational stability and service life at the heart of these devices. However, conventional transformers face numerous shortcomings in practical applications. For one thing, the large amount of heat generated by conventional transformers during operation relies on natural airflow for dissipation. In hot weather, this heat can accumulate, reducing transformer performance and reliability, and even leading to safety incidents. Furthermore, in outdoor environments, conventional transformers are exposed to issues such as fallen leaves, accumulation of debris, and bird nesting, which not only affect heat dissipation but can also cause short circuits. Furthermore, the acidic substances produced by rotting fallen leaves and bird droppings can corrode and contaminate the transformer, increasing maintenance costs and the risk of equipment damage.

[0003] Therefore, we propose a new energy energy-saving transformer with a protective structure. While achieving efficient heat dissipation, it also cleans the transformer itself, avoiding the accumulation of fallen leaves, debris, and bird nesting, and protecting the transformer from the risks of overheating, corrosion, pollution, and short circuit. Summary of the Invention

[0004] The purpose of the present invention is to address the above-mentioned problems in the existing technology and propose a new energy energy-saving transformer with a protective structure. The technical problem to be solved by the invention is: how to achieve efficient heat dissipation while cleaning the transformer itself, avoiding the accumulation of fallen leaves, debris and bird nesting, and protecting itself from the risks of overheating, corrosion, pollution and short circuit.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A new energy energy-saving transformer with a protective structure includes a transformer body, a water-cooled heat dissipation component, a hydraulic reciprocating mechanism, two telescopic cleaning components and two tracks. The water-cooled heat dissipation component is arranged on the outer wall of the transformer body, the heat sink of the transformer body is located inside the water-cooled heat dissipation component, the water inlet end of the water-cooled heat dissipation component is connected to an external water tank, the hydraulic reciprocating mechanism is arranged in the middle position of the upper end of the transformer body, the water inlet end of the hydraulic reciprocating mechanism is connected to the water outlet end of the water-cooled heat dissipation component, and the water outlet end of the hydraulic reciprocating mechanism is connected to the external water tank, the cross-sections of the two tracks are both circular, and the two tracks are both fixed to the upper end of the transformer body, and the two tracks are respectively located on both sides of the hydraulic reciprocating mechanism, the two telescopic cleaning components are respectively arranged on both sides of the moving part of the hydraulic reciprocating mechanism, and the telescopic ends of the two telescopic cleaning components are respectively slidably arranged on the tracks on the same side.

[0006] The working principle of the present invention is as follows: when working, the water-cooled heat dissipation component wraps the heat sink of the transformer main body, and its water inlet end is connected to the external water tank. The cooling water in the water tank flows into the water-cooled heat dissipation component to take away the heat generated by the heat sink of the transformer main body. The heated cooling water flows from the water outlet end of the water-cooled heat dissipation component into the water inlet end of the hydraulic reciprocating mechanism, and the pressure of the cooling water is used to drive the moving part of the hydraulic reciprocating mechanism to move back and forth, and returns to the external water tank from its water outlet end, so as to realize the circulation and heat dissipation of the cooling water, protect the transformer main body, and avoid overheating of the transformer main body; at the same time, the moving part of the hydraulic reciprocating mechanism drives the telescopic cleaning components on both sides to move, and the telescopic ends of the telescopic cleaning components slide on the track, and complete the telescopic expansion and contraction through cooperation with the track, avoiding the insulating sleeve and tap changer on the upper end of the transformer main body, and cleaning the upper end of the transformer main body in all directions, keeping its surface clean, avoiding the accumulation of fallen leaves and debris, and the nesting of birds, further ensuring the heat dissipation effect, maintaining the normal operation of the equipment, and avoiding short circuit and pollution.

[0007] The water-cooling heat dissipation component includes a water pump, a sealed shell, a water outlet pipe and an elastic automatic water pipe reel. The water pump, the sealed shell, the water outlet pipe and the elastic automatic water pipe reel are all fixed on the outer wall of the transformer body. The heat sink of the transformer body is located inside the sealed shell. The water inlet end of the water pump is connected to the external water tank, and the water outlet end of the water pump is connected to the interior of the sealed shell. The water inlet end of the water outlet pipe passes through the side wall of the sealed shell away from the water pump and is connected to the interior of the sealed shell. The water outlet end of the water outlet pipe is connected to the fixed end of the water pipe of the elastic automatic water pipe reel, and the telescopic end of the water pipe of the elastic automatic water pipe reel is connected to the water inlet end of the hydraulic reciprocating mechanism.

[0008] With the above structure, when working, the water pump draws water from the external water tank and injects the cooling water into the sealed shell through its water outlet end. The sealed shell wraps the heat sink of the transformer body. The cooling water absorbs the heat of the heat sink in the sealed shell. The heated cooling water flows into the outlet pipe through the water inlet end of the outlet pipe, and then enters the water pipe fixed end of the elastic automatic water pipe retractor from the water outlet end of the outlet pipe. The elastic automatic water pipe retractor can flexibly receive and release the water pipe, and transport the cooling water to the water inlet end of the hydraulic reciprocating mechanism. Then the hydraulic reciprocating mechanism returns the cooling water to the water tank, completing the circulation heat dissipation process and ensuring the efficient and stable operation of the transformer body.

[0009] The hydraulic reciprocating mechanism includes a slide rail, a sliding connecting pipe, a water inlet pipe, a reversing assembly, two corrugated telescopic tubes, two drainage pipes and two elastic automatic water pipe reels. The slide rail is fixed to the middle position of the upper end of the transformer body, and a slide groove is opened at the upper end of the slide rail in the left and right directions. The sliding connecting pipe is horizontal, and the sliding connecting pipe is slidably arranged inside the slide groove. The two corrugated telescopic tubes are both located inside the slide groove, and the two corrugated telescopic tubes are respectively located on both sides of the sliding connecting pipe. The two ends of the sliding connecting pipe are respectively connected with the corrugated telescopic tube on the same side. The ends of the two corrugated telescopic tubes away from the sliding connecting pipe are closed and respectively abut against the groove walls at both ends of the slide groove. The water inlet pipe is fixed to the middle position of the upper end of the sliding connecting pipe, and the lower end of the water inlet pipe is connected to the inside of the sliding connecting pipe. The upper end of the water inlet pipe is connected with the telescopic end of the water pipe of the elastic automatic water pipe reel one, the reversing assembly is arranged on the sliding connecting pipe and the water inlet pipe, the two drain pipes are respectively fixed on both sides of the upper end of the sliding connecting pipe, and the lower ends of the two drain pipes are connected with the sliding connecting pipe, the two elastic automatic water pipe reel twos are fixed on the outer wall of the transformer body, and the telescopic ends of the water pipes of the two elastic automatic water pipe reel twos are respectively connected with the upper ends of the two drain pipes, and the fixed ends of the water pipes of the two elastic automatic water pipe reel twos are connected with the external water tank, and two left-right symmetrical baffles are fixed inside the sliding connecting pipe. The two baffles are located between the two drain pipes and on both sides of the water inlet pipe. Conical through holes are opened on the two baffles, and the tips of the two conical through holes are opposite to each other.

[0010] By adopting the above structure, the cooling water flowing out from the elastic automatic water pipe reel enters the sliding connecting pipe through the water inlet pipe, and under the guidance of the reversing component, enters the corrugated expansion pipe on one side, causing the corrugated expansion pipe on one side to extend under the action of the cooling water, driving the sliding connecting pipe to move on the slide rail. At this time, the corrugated expansion pipe on the other side is compressed. When the sliding connecting pipe reaches one end of the transformer main body, the reversing component acts to guide the cooling water into the compressed corrugated expansion pipe. At this time, the compressed corrugated expansion pipe extends under the action of the cooling water, compressing the corrugated expansion pipe on the other side. The cooling water inside the compressed corrugated expansion pipe enters the corresponding water pipe of the elastic automatic water pipe reel 2 through the corresponding drain pipe and flows back to the external water tank. When the sliding connecting pipe reaches the other end of the transformer main body, the reversing component acts again to change the direction of the cooling water, thereby changing the sliding direction of the sliding connecting pipe, realizing the reciprocating motion of the sliding connecting pipe.

[0011] The reversing assembly includes a moving shaft and a rotating shaft. The moving shaft is horizontally arranged along the left and right directions and is located inside the sliding connecting tube, and the two ends of the moving shaft pass through two tapered through holes respectively. Two tapered sealing plugs are fixed on the moving shaft. The tips of the two tapered sealing plugs are opposite to each other, and the shapes and sizes of the two tapered sealing plugs correspond to the tapered through holes. Two baffles are located between the two tapered sealing plugs. A retaining ring is fixed at both ends of the moving shaft. The outer diameter of the retaining ring is equal to the inner diameter of the sliding connecting tube. A rubber sealing gasket is fixed at the upper end of the retaining ring. The rotating shaft is horizontally arranged along the front and rear directions. The rotating shaft is rotatably arranged in the middle position of the water inlet pipe through two sealing bearings, and the two ends of the rotating shaft extend out of the water inlet pipe. There are two connecting rods, which are respectively located on the front and rear sides of the movable shaft, and a limiting slot is provided on the end of the two connecting rods away from the rotating shaft. The front and rear ends of the middle position of the movable shaft are fixed with limiting shafts, and the two limiting shafts are respectively located in the limiting slots on the same side. A rotating rod is fixed at both ends of the rotating shaft, and the angle between the rotating rod and the connecting rod is °. A fixed rod 1 is fixed on the outer walls of the front and rear ends of the water inlet pipe, and the fixed rod 1 is located directly below the rotating shaft. A fixed rod 2 is fixed on the upper end of the rotating rod, and a tension spring is provided between the fixed rod 2 and the fixed rod 1 on the same side. Mounting rods are fixed on the left and right sides of the rotating rod, and a rotating wheel is provided for rotating the end of the mounting rod away from the rotating rod, and blocks are fixed at both ends of the slide rail.

[0012] With the above structure, when working, when the cooling water flowing out of the water-cooled heat dissipation component enters the sliding connecting pipe through the water inlet pipe, under the action of the tension spring, the movable shaft is deflected to the right by the rotating rod, the rotating shaft and the connecting rod. At this time, the conical sealing plug on the right side moves away from the baffle on the same side, the conical through-hole on the right side opens, the rubber sealing gasket on the right baffle ring blocks the drain pipe on the right side, and the drain pipe on the right side is closed. At the same time, the conical sealing plug on the left side blocks the conical through-hole on the left side, the conical through-hole on the left side is closed, the baffle ring on the left side moves away from the drain pipe on the same side, the drain pipe on the left side is opened, the cooling water is injected into the corrugated telescopic pipe on the right, and the sliding connecting pipe moves to the left. When the rotating wheel on the left side of the rotating rod collides with the block on the left side of the slide rail, the rotating rod turns to the right. Under the action of the tension spring, the movable axis deviates to the left through the rotating shaft and the connecting rod. At this time, the conical sealing plug on the right side blocks the conical through hole on the baffle on the same side, the conical through hole on the right side is closed, the rubber sealing gasket on the right retaining ring moves away from the drain pipe on the right, and the drain pipe on the right is opened. At the same time, the conical sealing plug on the left side moves away from the conical through hole on the left side, the conical through hole on the left side is opened, the retaining ring on the left blocks the drain pipe on the same side, the drain pipe on the left is closed, the cooling water is injected into the corrugated telescopic tube on the left, and the sliding connecting pipe moves to the right.

[0013] A number of evenly distributed rollers are rotatably provided on the outer side wall of the sliding connecting pipe, and a number of stop grooves are opened on the groove wall of the slide groove. The number and position of the stop grooves correspond to the rollers, and the rollers all abut against the bottom surface of the corresponding stop grooves. Ribs are fixed at the connection between the fixed rod 1 and the water inlet pipe and at the connection between the fixed rod 2 and the rotating rod.

[0014] With the above structure, the roller is used to realize the sliding of the sliding connecting pipe on the slide rail, the stop groove is used to limit the rotation of the sliding connecting pipe, and the rib is used to increase the strength of the fixing rod 1 and the fixing rod 2.

[0015] A protective cover with an arc-shaped cross section is fixed to the upper ends of both ends of the slide rail, and a blocking brush is fixed to the inner side of the arc at one end where the two protective covers are close to each other. A number of straight and evenly distributed rubber blocking strips are fixed on both sides of the slide groove.

[0016] With the above structure, the protective cover is used to store the compressed bellows, the blocking brush is used to clean dust and debris on the bellows to prevent dust and debris from remaining in the gap of the bellows, and the rubber barrier strip is used to cover the chute to prevent debris from falling into the chute.

[0017] The telescopic cleaning assembly includes a cleaning rod three, both sides of which are slidably provided with cleaning rods two, and the side of the cleaning rod two away from the cleaning rod three is slidably provided with a cleaning rod one, the cleaning rod one is fixed on the outer surface of the water inlet pipe, and a moving block is fixed at the end of the cleaning rod three away from the water inlet pipe, and a cleaning brush is fixed at the lower ends of the cleaning rods one, two, three and the moving block, and a C-shaped snap ring is rotatably provided at the lower end of the moving block, the shape and size of the C-shaped snap ring correspond to the track, and the C-shaped snap ring is sleeved on the corresponding track, and a V-shaped push plate is fixed at the upper end of the cleaning rod three close to the water inlet pipe.

[0018] When the cleaning rod is moved, the cleaning brush on the bottom of the cleaning rod is used to clean the surface of the transformer body. When the cleaning rod is moved, the cleaning brush on the bottom of the cleaning rod is used to clean the transformer body. When the cleaning rod is moved, the cleaning brush on the bottom of the cleaning rod is used to clean the transformer body. When the cleaning rod is moved, the cleaning brush on the bottom of the cleaning rod is used to clean the transformer body. When the cleaning rod is moved, the cleaning brush on the bottom of the cleaning rod is used to clean the transformer body. When the cleaning rod is moved, the cleaning brush on the bottom of the cleaning rod is used to clean the transformer body. When the cleaning rod is moved, the cleaning brush on the bottom of the cleaning rod is used to clean the transformer body. When the cleaning rod is moved, the cleaning brush on the bottom of the cleaning rod is used to clean the transformer body. When the cleaning rod is moved, the cleaning rod is used to clean the transformer body. When the cleaning rod is moved, the cleaning brush on the bottom of the cleaning rod is used to clean the transformer body. When the cleaning rod is moved, the cleaning rod is used to clean the transformer body.

[0019] A skeleton is fixed to the upper ends of the four outer sides of the transformer body. A rubber sheet made of a lightweight rubber material is provided on the skeleton. A plurality of connecting plates are fixed to the lower ends of the rubber sheet. The connecting plates are made of a lightweight plastic material and have an L-shaped cross-section. The orientations of the connecting plates are different. A hollow plate with a streamlined outer profile is fixed to the lower ends of the connecting plates. The hollow plate is made of a lightweight plastic material, and one of the two end faces of the hollow plate is raised. The front and back directions of the hollow plates are different.

[0020] With the above structure, the skeleton is used to install the rubber sheet, which shields the components arranged on the outer wall of the transformer body to prevent the accumulation of fallen leaves and debris. When the wind blows, it drives the connecting plates in different directions and the hollow plates on different fronts and backs to move, thereby driving the rubber sheet to deform, shaking off the fallen leaves and debris on it, and playing a role in repelling birds.

[0021] Compared with the existing technology, the new energy energy-saving transformer with protection structure has the following advantages: 1. By coordinating the transformer body with the water-cooling heat dissipation component, the circulating cooling water is used to quickly remove the heat from the heat sink of the transformer body, thereby achieving efficient heat dissipation of the transformer body. In hot weather, the transformer body can also be protected from overheating, ensuring stable operation of the transformer body. 2. Through the cooperation of the water-cooled heat dissipation component, the hydraulic reciprocating mechanism and the telescopic cleaning component, the cooling water pressure is used to drive the sliding connecting pipe to move back and forth. No additional power source is required, which is energy-saving and environmentally friendly. The telescopic cleaning component is driven to clean the upper end of the transformer body, avoiding the accumulation of fallen leaves, debris and bird nests, and protecting the transformer body from corrosion, pollution and short-circuit risks. 3. Through the cooperation of the hydraulic reciprocating mechanism, the telescopic cleaning component and the track, the telescopic cleaning component moves along with the hydraulic reciprocating mechanism while being extended and retracted according to the shape of the track. It can flexibly avoid the insulating sleeve and tap changer on the upper end of the transformer body, achieve all-round cleaning, avoid cleaning blind spots, and improve the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the rear three-dimensional structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the top structure of the present invention.

[0025] Figure 4 It is a schematic diagram of the internal structure of the water-cooling heat dissipation component in the present invention.

[0026] Figure 5It is a structural diagram of the hydraulic reciprocating mechanism in the present invention.

[0027] Figure 6 yes Figure 5 Schematic diagram of the locally enlarged structure at point A in the middle.

[0028] Figure 7 It is a schematic diagram of the internal structure of the hydraulic reciprocating mechanism in the present invention.

[0029] Figure 8 It is a structural schematic diagram of some components of the hydraulic reciprocating mechanism in the present invention.

[0030] Figure 9 It is a schematic cross-sectional view of some components of the hydraulic reciprocating mechanism of the present invention.

[0031] Figure 10 It is a structural schematic diagram of some components of the reversing assembly in the present invention.

[0032] Figure 11 It is a structural schematic diagram of the telescopic cleaning component in the present invention.

[0033] Figure 12 It is a schematic diagram of the exploded structure of the rubber film, frame, connecting plate and hollow plate in the present invention.

[0034] Figure 13 It is a structural schematic diagram of the connecting plate and the spoiler in the present invention.

[0035] In the figure, 1. transformer body; 2. water cooling assembly; 3. hydraulic reciprocating mechanism; 4. telescopic cleaning assembly; 5. track; 6. water pump; 7. sealed housing; 8. water outlet pipe; 9. elastic automatic hose retractor (1); 10. slide rail; 11. sliding connecting pipe; 12. corrugated telescopic pipe; 13. water inlet pipe; 14. drain pipe; 15. elastic automatic hose retractor (2); 16. movable shaft; 17. baffle; 18. conical sealing plug; 19. retaining ring; 20. rubber sealing gasket; 21. rotating shaft; 22. connecting rod. 23. Limiting groove; 24. Limiting shaft; 25. Rotating rod; 26. Fixed rod 1; 27. Fixed rod 2; 28. Tension spring; 29. ​​Mounting rod; 30. Rotating wheel; 31. Stop block; 32. Roller; 33. Rib; 34. Protective cover; 35. Blocking brush; 36. Rubber baffle; 37. Cleaning rod 1; 38. Cleaning rod 2; 39. Cleaning rod 3; 40. Moving block; 41. Cleaning brush; 42. C-shaped snap ring; 43. V-shaped push plate; 44. Rubber film; 45. Frame; 46. Connecting plate; 47. Hollow plate. DETAILED DESCRIPTION

[0036] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0037] like Figures 1-13 As shown, the new energy energy-saving transformer with a protective structure includes a transformer body 1, a water-cooled heat dissipation component 2, a hydraulic reciprocating mechanism 3, two telescopic cleaning components 4 and two rails 5. The water-cooled heat dissipation component 2 is arranged on the outer wall of the transformer body 1, and the heat sink of the transformer body 1 is located inside the water-cooled heat dissipation component 2. The water inlet end of the water-cooled heat dissipation component 2 is connected to an external water tank. The hydraulic reciprocating mechanism 3 is arranged in the middle position of the upper end of the transformer body 1, the water inlet end of the hydraulic reciprocating mechanism 3 is connected to the water outlet end of the water-cooled heat dissipation component 2, and the water outlet end of the hydraulic reciprocating mechanism 3 is connected to an external water tank. The cross-sections of the two rails 5 are both circular, and the two rails 5 are both fixed to the upper end of the transformer body 1, and the two rails 5 are respectively located on both sides of the hydraulic reciprocating mechanism 3, the two telescopic cleaning components 4 are respectively arranged on both sides of the moving part of the hydraulic reciprocating mechanism 3, and the telescopic ends of the two telescopic cleaning components 4 are respectively slidably arranged on the rails 5 on the same side.

[0038] In this embodiment, during operation, the water-cooled heat dissipation component 2 wraps the heat sink of the transformer body 1, and its water inlet end is connected to the external water tank. The cooling water in the water tank flows into the water-cooled heat dissipation component 2 to take away the heat generated by the heat sink of the transformer body 1. The heated cooling water flows from the water outlet end of the water-cooled heat dissipation component 2 into the water inlet end of the hydraulic reciprocating mechanism 3. The pressure of the cooling water is used to drive the moving part of the hydraulic reciprocating mechanism 3 to move back and forth, and returns to the external water tank from its water outlet end, thereby realizing the circulation and heat dissipation of the cooling water, protecting the transformer body 1 and preventing the transformer body 1 from overheating; at the same time, the moving part of the hydraulic reciprocating mechanism 3 drives the telescopic cleaning components 4 on both sides to move, and the telescopic ends of the telescopic cleaning components 4 slide on the rails 5. By cooperating with the rails 5, the telescopic cleaning components 4 are telescoped to avoid the insulating sleeve and tap changer on the upper end of the transformer body 1, and the upper end of the transformer body 1 is cleaned in all directions to keep its surface clean, avoid the accumulation of fallen leaves and debris, and avoid birds nesting, further ensuring the heat dissipation effect, maintaining the normal operation of the equipment, and avoiding short circuits and pollution.

[0039] The water-cooling heat dissipation component 2 includes a water pump 6, a sealed shell 7, a water outlet pipe 8 and an elastic automatic water pipe reel 9. The water pump 6, the sealed shell 7, the water outlet pipe 8 and the elastic automatic water pipe reel 9 are all fixed on the outer wall of the transformer body 1. The heat sink of the transformer body 1 is located inside the sealed shell 7. The water inlet end of the water pump 6 is connected to the external water tank, and the water outlet end of the water pump 6 is connected to the interior of the sealed shell 7. The water inlet end of the water outlet pipe 8 passes through the side wall of the sealed shell 7 away from the water pump 6 and is connected to the interior of the sealed shell 7. The water outlet end of the water outlet pipe 8 is connected to the fixed end of the water pipe of the elastic automatic water pipe reel 9, and the telescopic end of the water pipe of the elastic automatic water pipe reel 9 is connected to the water inlet end of the hydraulic reciprocating mechanism 3.

[0040] In this embodiment, when working, the water pump 6 draws water from the external water tank and injects the cooling water into the sealed shell 7 through its water outlet end. The sealed shell 7 wraps the heat sink of the transformer body 1. The cooling water absorbs the heat of the heat sink in the sealed shell 7. The heated cooling water flows into the outlet pipe 8 through the water inlet end of the outlet pipe 8, and then enters the water pipe fixed end of the elastic automatic water pipe retractor 9 from the water outlet end of the outlet pipe 8. The elastic automatic water pipe retractor 9 can flexibly receive and release the water pipe, and transport the cooling water to the water inlet end of the hydraulic reciprocating mechanism 3. Then the hydraulic reciprocating mechanism 3 returns the cooling water to the water tank, completing the circulation heat dissipation process and ensuring the efficient and stable operation of the transformer body 1.

[0041] The hydraulic reciprocating mechanism 3 includes a slide rail 10, a sliding connecting pipe 11, a water inlet pipe 13, a reversing assembly, two bellows telescopic pipes 12, two drain pipes 14 and two elastic automatic water pipe reels 15. The slide rail 10 is fixed at the middle position of the upper end of the transformer body 1, and a slide groove is opened at the upper end of the slide rail 10 in the left and right directions. The sliding connecting pipe 11 is horizontal, and the sliding connecting pipe 11 is slidably arranged inside the slide groove. The two bellows telescopic pipes 12 are both located inside the slide groove, and the two bellows telescopic pipes 12 are respectively located on both sides of the sliding connecting pipe 11. The two ends of the sliding connecting pipe 11 are respectively connected to the bellows telescopic pipe 12 on the same side. The ends of the two bellows telescopic pipes 12 away from the sliding connecting pipe 11 are closed and respectively abut against the groove walls at both ends of the slide groove. The water inlet pipe 13 is fixed at the middle position of the upper end of the sliding connecting pipe 11, and the lower end of the water inlet pipe 13 is in contact with the inner wall of the sliding connecting pipe 11. The upper end of the water inlet pipe 13 is connected with the telescopic end of the water pipe of the elastic automatic water pipe reel 9, the reversing assembly is arranged on the sliding connecting pipe 11 and the water inlet pipe 13, the two drain pipes 14 are respectively fixed on both sides of the upper end of the sliding connecting pipe 11, and the lower ends of the two drain pipes 14 are connected with the sliding connecting pipe 11, the two elastic automatic water pipe reel 2 15 are fixed on the outer wall of the transformer body 1, and the telescopic ends of the water pipes of the two elastic automatic water pipe reel 2 15 are respectively connected with the upper ends of the two drain pipes 14, and the fixed ends of the water pipes of the two elastic automatic water pipe reel 2 15 are connected with the external water tank, and two left-right symmetrical baffles 17 are fixed inside the sliding connecting pipe 11. The two baffles 17 are located between the two drain pipes 14 and on both sides of the water inlet pipe 13, and the two baffles 17 are provided with conical through holes, and the tips of the two conical through holes are opposite to each other.

[0042] In this embodiment, the cooling water flowing out from the elastic automatic water pipe retractor 9 enters the sliding connecting pipe 11 through the water inlet pipe 13, and under the guidance of the reversing component, enters the bellows expansion tube 12 on one side, causing the bellows expansion tube 12 on one side to extend under the action of the cooling water, driving the sliding connecting pipe 11 to move on the slide rail 10. At this time, the bellows expansion tube 12 on the other side is compressed. When the sliding connecting pipe 11 reaches one end of the transformer main body 1, the reversing component acts to guide the cooling water into the compressed bellows expansion tube 12. At this time, the compressed bellows expansion tube 12 extends under the action of the cooling water, compressing the bellows expansion tube 12 on the other side. The cooling water inside the compressed bellows expansion tube 12 enters the corresponding water pipe of the elastic automatic water pipe retractor 2 15 through the corresponding drain pipe 14 and flows back to the external water tank. When the sliding connecting pipe 11 reaches the other end of the transformer main body 1, the reversing component acts again to change the direction of the cooling water, thereby changing the sliding direction of the sliding connecting pipe 11, realizing the reciprocating motion of the sliding connecting pipe 11.

[0043] The reversing assembly includes a moving shaft 16 and a rotating shaft 21. The moving shaft 16 is horizontally arranged in the left and right directions and is located inside the sliding connecting tube 11, and the two ends of the moving shaft 16 pass through two tapered through holes respectively. Two tapered sealing plugs 18 are fixed on the moving shaft 16. The tips of the two tapered sealing plugs 18 are opposite to each other, and the shapes and sizes of the two tapered sealing plugs 18 correspond to the tapered through holes. Two baffles 17 are located between the two tapered sealing plugs 18. Both ends of the moving shaft 16 are fixed with a retaining ring 19. The outer diameter of the retaining ring 19 is equal to the inner diameter of the sliding connecting tube 11. A rubber sealing gasket 20 is fixed to the upper end of the retaining ring 19. The rotating shaft 21 is horizontally arranged in the front and rear directions. The rotating shaft 21 is rotatably arranged in the middle position of the water inlet pipe 13 through two sealed bearings, and the two ends of the rotating shaft 21 extend out of the water inlet pipe 13. Two connecting rods 22 are fixed on the rotating shaft 21. The two The connecting rods 22 are respectively located on the front and rear sides of the movable shaft 16, and a limiting groove 23 is provided on the end of the two connecting rods 22 away from the rotating shaft 21. The front and rear ends of the middle position of the movable shaft 16 are fixed with limiting shafts 24, and the two limiting shafts 24 are respectively located in the limiting grooves 23 on the same side. A rotating rod 25 is fixed at both ends of the rotating shaft 21, and the angle between the rotating rod 25 and the connecting rod 22 is 180°. A fixing rod 1 26 is fixed on the outer walls of the front and rear ends of the water inlet pipe 13. The fixing rod 1 26 is located directly below the rotating shaft 21. A fixing rod 27 is fixed on the upper end of the rotating rod 25. A tension spring 28 is provided between the fixing rod 27 and the fixing rod 1 26 on the same side. Mounting rods 29 are fixed on the left and right sides of the rotating rod 25. The mounting rod 29 is provided with a rotating wheel 30 for rotating at one end away from the rotating rod 25, and a stopper 31 is fixed at both ends of the slide rail 10.

[0044] In this embodiment, during operation, when the cooling water flowing out of the water-cooled heat dissipation component 2 enters the sliding connecting pipe 11 through the water inlet pipe 13, under the action of the tension spring 28, the movable shaft 16 is deflected to the right by the rotating rod 25, the rotating shaft 21 and the connecting rod 22. At this time, the conical sealing plug 18 on the right side is away from the baffle 17 on the same side, the conical through hole on the right side is opened, the rubber sealing gasket 20 on the right baffle ring 19 blocks the drain pipe 14 on the right side, and the drain pipe on the right side is closed. At the same time, the conical sealing plug 18 on the left side blocks the conical through hole on the left side, the conical through hole on the left side is closed, the baffle ring 19 on the left side is away from the drain pipe 14 on the same side, the drain pipe 14 on the left side is opened, the cooling water is injected into the corrugated telescopic pipe 12 on the right side, and the sliding connecting pipe 11 moves to the left. When the rotating wheel 30 on the left side of the rotating rod 25 collides with the block 31 on the left side of the slide rail 10, the rotating rod 25 turns to the right. Under the action of the tension spring 28, the movable axis deviates to the left through the rotating shaft 21 and the connecting rod 22. At this time, the conical sealing plug 18 on the right side blocks the conical through hole on the baffle 17 on the same side, and the conical through hole on the right side is closed. The rubber sealing gasket 20 on the right retaining ring 19 moves away from the drain pipe 14 on the right, and the drain pipe on the right is opened. At the same time, the conical sealing plug 18 on the left side moves away from the conical through hole on the left side, and the conical through hole on the left side is opened. The retaining ring 19 on the left side blocks the drain pipe 14 on the same side, and the drain pipe 14 on the left side is closed. The cooling water is injected into the corrugated telescopic tube 12 on the left, and the sliding connecting pipe 11 moves to the right.

[0045] A number of evenly distributed rollers 32 are rotatably provided on the outer wall of the sliding connecting pipe 11, and a number of stop grooves are opened on the groove wall of the slide groove. The number and position of the stop grooves correspond to the rollers 32. The number of rollers 32 all abut against the bottom surface of the corresponding stop grooves. Ribs 33 are fixed at the connection between the fixed rod 1 26 and the water inlet pipe 13 and the connection between the fixed rod 27 and the rotating rod 25.

[0046] In this embodiment, the roller 32 is used to enable the sliding connecting tube 11 to slide on the slide rail 10, the stop groove is used to limit the rotation of the sliding connecting tube 11, and the rib 33 is used to increase the strength of the fixing rod 1 26 and the fixing rod 2 27.

[0047] A protective cover 34 with an arc-shaped cross section is fixed to the upper ends of both ends of the slide rail 10, and a blocking brush 35 is fixed to the inner side of the arc at one end close to each other. A number of straight and evenly distributed rubber blocking strips 36 are fixed on both sides of the slide groove.

[0048] In this embodiment, the protective cover 34 is used to accommodate the compressed bellows telescopic tube 12, the blocking brush 35 is used to clean dust and debris on the bellows telescopic tube 12 to prevent dust and debris from remaining in the gap of the bellows telescopic tube 12, and the rubber barrier strip 36 is used to cover the slide groove to prevent debris from falling into the slide groove.

[0049] The telescopic cleaning assembly 4 includes a cleaning rod 39, and cleaning rods 2 38 are slidably provided on both sides of the cleaning rod 39. A cleaning rod 1 37 is slidably provided on the side of the cleaning rod 2 38 away from the cleaning rod 3 39. The cleaning rod 1 37 is fixed on the outer surface of the water inlet pipe 13, and a moving block 40 is fixed on the end of the cleaning rod 3 39 away from the water inlet pipe 13. A cleaning brush 41 is fixed at the lower end of the cleaning rod 1 37, the cleaning rod 2 38, the cleaning rod 3 39 and the moving block 40. A C-shaped snap ring 42 is rotatably provided at the lower end of the moving block 40. The shape and size of the C-shaped snap ring 42 correspond to the track 5, and the C-shaped snap ring 42 is sleeved on the corresponding track 5. A V-shaped push plate 43 is fixed to the upper end of the cleaning rod 3 39 close to the water inlet pipe 13.

[0050] In this embodiment, when the sliding connecting tube 11 moves on the slide rail 10, the cleaning rod 1 37 moves synchronously therewith. Since the C-shaped retaining ring 42 is sleeved on the track 5, when the moving block 40 moves with the cleaning rod 1 37, a lateral displacement relative to the water inlet pipe 13 will be generated, and the cleaning rod 2 38 will slide on the cleaning rod 1 37, and the cleaning rod 3 39 will slide on the cleaning rod 2 38. The entire telescopic cleaning assembly 4 realizes the telescopic function. During the movement and telescopic process, the cleaning rod 1 37, the cleaning rod 2 38, the cleaning rod 3 39 and the cleaning brush 41 at the lower end of the moving block 40 clean the surface of the transformer body 1. When the telescopic cleaning assembly 4 is extended, the V-shaped push plate 43 can push away the fallen leaves and debris that fall on the upper end of the telescopic cleaning assembly 4 itself, avoiding cleaning dead corners and ensuring the cleaning effect.

[0051] A skeleton 45 is fixed to the upper ends of the four outer walls of the transformer body 1. A rubber sheet 44 made of a lightweight rubber material is provided on the skeleton 45. A plurality of connecting plates 46 are fixed to the lower ends of the rubber sheet 44. The connecting plates 46 are made of a lightweight plastic material and have an L-shaped cross-section. The orientations of the connecting plates 46 are different. A hollow plate 47 with a streamlined outer profile is fixed to the lower ends of the connecting plates 46. The hollow plate 47 is made of a lightweight plastic material, and one of the two end faces of the hollow plate 47 is raised. The front and back directions of the hollow plates 47 are different.

[0052] In this embodiment, the frame 45 is used to install the rubber sheet 44, which shields the components arranged on the outer wall of the transformer body 1 to prevent the accumulation of fallen leaves and debris. When the wind blows, it drives the connecting plates 46 in different directions and the hollow plates 47 in different front and back directions to move, thereby causing the rubber sheet 44 to deform, shaking off the fallen leaves and debris thereon, and playing a role in repelling birds.

[0053] The working principle of the present invention is as follows: after the equipment is started, the water pump 6 starts working first, pumping water from the external water tank and injecting the cooling water into the sealed shell 7. The sealed shell 7 wraps the heat sink of the transformer body 1. The cooling water absorbs heat in it and heats up. It flows into the elastic automatic water pipe retractor 9 through the outlet pipe 8 and is then transported to the water inlet pipe 13 of the hydraulic reciprocating mechanism 3. At this time, under the action of the tension spring 28, the moving shaft 16 deviates to the right, the right tapered through hole opens, the left side closes, the right drain pipe 14 closes, the left side opens, and the cooling water is injected into the right corrugated telescopic pipe 12, pushing the slide The movable connecting pipe 11 moves to the left, driving the telescopic cleaning components 4 on both sides to move, and the cleaning rod 1 37 moves synchronously. Because the C-shaped clamping ring 42 is sleeved on the track 5, the moving block 40 moves to produce a lateral displacement, causing the cleaning rod 2 38 and the cleaning rod 3 39 to slide, realizing the telescopic cleaning component 4. The cleaning brush 41 at the lower end cleans the surface of the transformer body 1, and the V-shaped push plate 43 pushes away the debris on its upper end; when the rotating wheel 30 on the left side of the rotating rod 25 collides with the left stopper 31 of the slide rail 10, the rotating rod 25 turns to the right, the moving shaft 16 deviates to the left, and the cooling water is injected into the left side. The bellows telescopic tube 12 and the sliding connecting tube 11 move to the right, and the above cleaning action is repeated; during the reciprocating movement of the sliding connecting tube 11, the roller 32 assists it to slide on the slide rail 10, and the stop groove and the roller 32 cooperate to limit the rotation of the sliding connecting tube 11. The rib 33 is used to enhance the strength of the fixing rod 1 26 and the fixing rod 2 27. The protective cover 34 receives the compressed bellows telescopic tube 12, and the blocking brush 35 cleans its surface. The rubber baffle 36 blocks the slide groove to prevent debris from entering. Finally, the cooling water in the compressed bellows telescopic tube 12 is discharged through the corresponding drain pipe. 14 enters the elastic automatic water pipe reel 2 15 and flows back to the external water tank. The cycle is repeated to achieve circulating heat dissipation of cooling water and continuous cleaning of the surface of the transformer body 1, protecting the stable operation of the equipment and avoiding overheating, accumulation of fallen leaves and bird nesting. At the same time, the rubber soft sheet 44 shields the components arranged on the outer wall of the transformer body 1 to avoid accumulation of fallen leaves and debris. When the wind blows, it drives the connecting plates 46 in different directions and the hollow plates 47 in different front and back directions to move, thereby driving the rubber soft sheet 44 to deform, shaking off the fallen leaves and debris thereon, and playing a role in repelling birds.

[0054] In summary, by cooperating with the water-cooling heat dissipation component 2, the heat on the heat sink of the transformer main body 1 is quickly removed by the circulating cooling water, thereby achieving efficient heat dissipation of the transformer main body 1. In hot weather, the transformer main body 1 can also be protected from overheating, ensuring stable operation of the transformer main body 1. The water-cooled heat dissipation component 2, the hydraulic reciprocating mechanism 3 and the telescopic cleaning component 4 cooperate to utilize the cooling water pressure to drive the sliding connecting pipe 11 to reciprocate. No additional power source is required, which is energy-saving and environmentally friendly. The telescopic cleaning component 4 is driven to clean the upper end of the transformer body 1, avoiding the accumulation of fallen leaves, debris and bird nests, and protecting the transformer body 1 from corrosion, pollution and short-circuit risks. Through the cooperation of the hydraulic reciprocating mechanism 3, the telescopic cleaning component 4 and the track 5, the telescopic cleaning component 4 can be extended and retracted according to the shape of the track 5 while following the movement of the hydraulic reciprocating mechanism 3, and can flexibly avoid the insulating sleeve and tap changer at the upper end of the transformer body 1, thereby achieving all-round cleaning, avoiding cleaning dead corners, and improving the cleaning effect.

[0055] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A new energy energy-saving transformer with a protective structure, comprising a transformer body (1), a water-cooling heat dissipation component (2), a hydraulic reciprocating movement mechanism (3), two telescopic cleaning components (4) and two rails (5), characterized in that: The water-cooling heat dissipation component (2) is arranged on the outer wall of the transformer body (1), the heat sink of the transformer body (1) is located inside the water-cooling heat dissipation component (2), the water inlet end of the water-cooling heat dissipation component (2) is connected to an external water tank, the hydraulic reciprocating mechanism (3) is arranged at the middle position of the upper end of the transformer body (1), the water inlet end of the hydraulic reciprocating mechanism (3) is connected to the water outlet end of the water-cooling heat dissipation component (2), and the water outlet end of the hydraulic reciprocating mechanism (3) is connected to the external water tank, the cross-sections of the two rails (5) are both circular, and the two rails (5) are both fixed to the upper end of the transformer body (1), and the two rails (5) are respectively located on both sides of the hydraulic reciprocating mechanism (3), and the two telescopic cleaning components (4) are respectively arranged on both sides of the moving part of the hydraulic reciprocating mechanism (3), and the telescopic ends of the two telescopic cleaning components (4) are respectively slidably arranged on the rails (5) on the same side.

2. The new energy energy-saving transformer with a protection structure according to claim 1, characterized in that: The water-cooling heat dissipation component (2) includes a water pump (6), a sealed shell (7), a water outlet pipe (8) and an elastic automatic water pipe retractor (9). The water pump (6), the sealed shell (7), the water outlet pipe (8) and the elastic automatic water pipe retractor (9) are all fixed on the outer wall of the transformer body (1). The heat sink of the transformer body (1) is located inside the sealed shell (7). The water inlet end of the water pump (6) is connected to an external water tank, and the water outlet end of the water pump (6) is connected to the inside of the sealed shell (7). The water inlet end of the water outlet pipe (8) passes through the side wall of the sealed shell (7) away from the water pump (6) and is connected to the inside of the sealed shell (7). The water outlet end of the water outlet pipe (8) is connected to the fixed end of the water pipe of the elastic automatic water pipe retractor (9), and the telescopic end of the water pipe of the elastic automatic water pipe retractor (9) is connected to the water inlet end of the hydraulic reciprocating mechanism (3).

3. The new energy energy-saving transformer with a protection structure according to claim 2, characterized in that: The hydraulic reciprocating mechanism (3) comprises a slide rail (10), a sliding connecting pipe (11), a water inlet pipe (13), a reversing assembly, two corrugated telescopic pipes (12), two drainage pipes (14) and two elastic automatic water pipe retractors (15). The slide rail (10) is fixed at the middle position of the upper end of the transformer body (1), and a slide groove is provided at the upper end of the slide rail (10) along the left and right directions. The sliding connecting pipe (11) is horizontal, and the sliding connecting pipe (11) is slidably arranged inside the slide groove. The two The bellows telescopic tubes (12) are all located inside the chute, and the two bellows telescopic tubes (12) are respectively located on both sides of the sliding connecting tube (11). The two ends of the sliding connecting tube (11) are respectively communicated with the bellows telescopic tube (12) on the same side. The ends of the two bellows telescopic tubes (12) away from the sliding connecting tube (11) are closed and respectively abut against the groove walls at both ends of the chute. The water inlet pipe (13) is fixed at the middle position of the upper end of the sliding connecting tube (11), and the lower end of the water inlet pipe (13) is connected to the sliding connecting tube ( 11), the upper end of the water inlet pipe (13) is connected to the telescopic end of the water pipe of the elastic automatic water pipe retractor (9), the reversing assembly is arranged on the sliding connecting pipe (11) and the water inlet pipe (13), the two drain pipes (14) are respectively fixed on both sides of the upper end of the sliding connecting pipe (11), and the lower ends of the two drain pipes (14) are connected to the sliding connecting pipe (11), the two elastic automatic water pipe retractors (15) are fixed on the outer wall of the transformer body (1), and the two elastic The telescopic ends of the water pipe of the second automatic water pipe reel (15) are respectively connected to the upper ends of the two drainage pipes (14), and the fixed ends of the water pipes of the two elastic automatic water pipe reel (15) are both connected to the external water tank. Two left-right symmetrical baffles (17) are fixed inside the sliding connecting pipe (11). The two baffles (17) are located between the two drainage pipes (14) and on both sides of the water inlet pipe (13). The two baffles (17) are both provided with a tapered through hole, and the tips of the two tapered through holes are opposite to each other.

4. The new energy energy-saving transformer with a protection structure according to claim 3, characterized in that: The reversing assembly includes a moving shaft (16) and a rotating shaft (21). The moving shaft (16) is horizontally arranged in the left-right direction and is located inside the sliding connecting tube (11). The two ends of the moving shaft (16) pass through two conical through holes respectively. Two conical sealing plugs (18) are fixed on the moving shaft (16). The tips of the two conical sealing plugs (18) are opposite to each other, and the shapes and sizes of the two conical sealing plugs (18) correspond to the conical through holes. Two baffles (17) are located between the two conical sealing plugs (18). ), both ends of the movable shaft (16) are fixed with retaining rings (19), the outer diameter of the retaining ring (19) is equal to the inner diameter of the sliding connecting pipe (11), and the upper end of the retaining ring (19) is fixed with a rubber sealing gasket (20), the rotating shaft (21) is horizontally arranged along the front-back direction, the rotating shaft (21) is rotatably arranged in the middle position of the water inlet pipe (13) through two sealed bearings, and the two ends of the rotating shaft (21) extend out of the water inlet pipe (13), and two connecting rods (22) are fixed on the rotating shaft (21), and the two connecting rods (22) are fixed to the rotating shaft (21). ) are respectively located on the front and rear sides of the moving shaft (16), and the two connecting rods (22) are provided with a limit slot (23) on one end away from the rotating shaft (21). The front and rear ends of the middle position of the moving shaft (16) are fixed with a limit shaft (24), and the two limit shafts (24) are respectively located inside the limit slot (23) on the same side. The two ends of the rotating shaft (21) are fixed with a rotating rod (25), and the angle between the rotating rod (25) and the connecting rod (22) is (180) °. The front and rear ends of the water inlet pipe (13) are fixed with a rotating rod (25). A fixing rod (26) is fixed on the outer wall of the rotating rod (25), and the fixing rod (26) is located just below the rotating shaft (21). A fixing rod (27) is fixed on the upper end of the rotating rod (25). A tension spring (28) is provided between the fixing rod (27) and the fixing rod (26) on the same side. A mounting rod (29) is fixed on both sides of the rotating rod (25). A rotating wheel (30) is provided at one end of the mounting rod (29) away from the rotating rod (25). Stoppers (31) are fixed at both ends of the slide rail (10).

5. The new energy energy-saving transformer with a protection structure according to claim 4, characterized in that: A plurality of rollers (32) are rotatably provided on the outer wall of the sliding connection pipe (11), and a plurality of stop grooves are provided on the groove wall of the slide groove. The number and position of the stop grooves correspond to the rollers (32). The plurality of rollers (32) are in contact with the bottom surface of the corresponding stop grooves. Ribs (33) are fixed to the connection between the fixing rod 1 (26) and the water inlet pipe (13) and the connection between the fixing rod 2 (27) and the rotating rod (25).

6. The new energy energy-saving transformer with a protection structure according to claim 5, characterized in that: A protective cover (34) with an arc-shaped cross section is fixed to the upper ends of both ends of the slide rail (10), a blocking brush (35) is fixed to the inner side of the arc at one end where the two protective covers (34) are close to each other, and a plurality of straight and evenly distributed rubber blocking strips (36) are fixed on both sides of the slide groove.

7. The new energy energy-saving transformer with a protection structure according to claim 6, characterized in that: The telescopic cleaning assembly (4) includes a cleaning rod 3 (39), both sides of the cleaning rod 3 (39) are slidably provided with a cleaning rod 2 (38), a side of the cleaning rod 2 (38) away from the cleaning rod 3 (39) is slidably provided with a cleaning rod 1 (37), the cleaning rod 1 (37) is fixed on the outer surface of the water inlet pipe (13), and a moving block (40) is fixed on the end of the cleaning rod 3 (39) away from the water inlet pipe (13). The cleaning rods 1 (37) and The lower ends of the cleaning rod 2 (38), the cleaning rod 3 (39) and the moving block (40) are all fixed with a cleaning brush (41). The lower end of the moving block (40) is rotatably provided with a C-shaped snap ring (42). The shape and size of the C-shaped snap ring (42) correspond to the track (5), and the C-shaped snap ring (42) is sleeved on the corresponding track (5). The upper end of the cleaning rod 3 (39) close to the water inlet pipe (13) is fixed with a V-shaped push plate (43).

8. The new energy energy-saving transformer with a protection structure according to claim 7, characterized in that: A skeleton (45) is fixed to the upper ends of the four outer side walls of the transformer body (1). A rubber soft sheet (44) made of a lightweight rubber material is provided on the skeleton (45). A plurality of connecting plates (46) are fixed to the lower end of the rubber soft sheet (44). The connecting plates (46) are made of a lightweight plastic material and have an L-shaped cross section. The orientations of the plurality of connecting plates (46) are different. A hollow plate (47) with a streamlined outer profile is fixed to the lower end of the connecting plate (46). The hollow plate (47) is made of a lightweight plastic material, and one of the two end faces of the hollow plate (47) is convex. The positive and negative directions of the plurality of hollow plates (47) are different.

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