Energy-saving three-phase asynchronous motor with high protection capability

Abstract

The application discloses an energy-saving three-phase asynchronous motor with high protection capability, which comprises a motor body and a rear end cover, the rear end cover is connected with a dust cover, one end of the dust cover away from the motor body is provided with a dust screen, the dust cover is internally provided with a first swing assembly, a second swing assembly, a driving assembly and a cooling assembly, the driving assembly is used for driving the first swing plate assembly and the second swing assembly to simultaneously act, when the first swing plate and the second swing plate swing, the first brush and the second brush are driven to move up and down, dust on the dust screen is brushed down, so that the dust screen is prevented from being blocked by dust, when the motor body does not work, a V-shaped structure formed by the first swing plate and the second swing plate is formed, so that dust is prevented from entering the motor body from the dust screen, meanwhile, the second swing plate repeatedly extrudes the pressing plate when swinging up and down, so that the cooling liquid is circulated and flows, and heat dissipation of the motor body is accelerated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electric machines, and relates to an energy-saving three-phase asynchronous motor with high protection capability. BACKGROUND

[0002] Dust or particles from the outside enter the inside of the motor, and dust adheres to the internal parts of the motor, which can affect the normal operation of the motor and even damage the motor, affecting the service life of the motor. Therefore, a dust cover needs to be provided to prevent dust from entering the motor. During the operation of the motor, a large amount of heat is usually generated, and if the heat cannot be dissipated in time, the use of the motor will be affected, and a heat dissipation hole is usually provided on the dust cover to dissipate heat. However, dust enters the motor body through the heat dissipation hole, and dust adheres to the internal parts, which can affect the operation of the motor, and dust adheres to the heat dissipation hole, which can block the heat dissipation hole and reduce the heat dissipation efficiency.

[0003] To solve the above problems, the application provides an energy-saving three-phase asynchronous motor with high protection capability. SUMMARY

[0004] To solve the problems in the background art, the application provides an energy-saving three-phase asynchronous motor with high protection capability.

[0005] To achieve the above-mentioned purposes, the application adopts the following technical solutions: comprising

[0006] The motor body is provided with a rear end cover at one end; the rear end cover is provided with a heat dissipation net; the motor shaft of the motor body passes through the rear end cover; the rear end cover is connected with a dust cover; the dust cover is provided with a dust screen at the end away from the motor body; the dust cover is provided with a first swing component, a second swing component, a driving component and a cooling component;

[0007] One end of the first swing component is connected with the driving component; the end of the first swing component close to the dust screen is provided with a first brush component; the first swing component drives the first brush component to clean the dust cover when the first swing component moves;

[0008] One end of the second swing component is connected with the driving component; the end of the second swing component close to the dust screen is provided with a second brush component; the second swing component drives the second brush component to clean the dust cover when the second swing component moves, and the second swing component acts on the cooling component through the extrusion piece to make the cooling component dissipate heat for the motor body;

[0009] The driving component is connected with the motor shaft of the motor body; the driving component is used to drive the first swing plate component and the second swing component to move at the same time.

[0010] Further, the first swing assembly comprises a first swing plate; a first strip-shaped hole is arranged on the first swing plate;

[0011] The second swing assembly comprises a second swing plate; a second strip-shaped hole is arranged on the second swing plate;

[0012] Two first fixing shafts are arranged in the dust cover and are parallel to each other; the first swing plate is slidably connected with one of the first fixing shafts through the first strip-shaped hole; the second swing plate is slidably connected with the other first fixing shaft through the second strip-shaped hole.

[0013] Further, the first brush assembly comprises a first connecting plate, a first brush and a first magnetic strip;

[0014] One end of the first connecting plate is hingedly connected with the first swing plate; the other end of the first connecting plate is connected with the first brush;

[0015] The first brush is in close contact with the dust screen;

[0016] The first magnetic strip is arranged on the first brush;

[0017] The second brush assembly comprises a second connecting plate, a second brush and a second magnetic strip;

[0018] One end of the second connecting plate is hingedly connected with one end of the second swing plate close to the dust screen; the other end of the second connecting plate is connected with the second brush;

[0019] The second brush is in close contact with the dust screen;

[0020] The second magnetic strip is arranged on the second brush; the second magnetic strip has the characteristic of being attracted to the first magnetic strip.

[0021] Further, a sliding groove is arranged on each side of the dust cover close to the dust screen; the first brush and the second brush are slidably connected with the sliding groove.

[0022] Further, the driving assembly comprises:

[0023] A driving bevel gear, which is arranged on the motor shaft;

[0024] A first driven bevel gear, which is engaged with the driving bevel gear;

[0025] A first rotating shaft, one end of which is connected with the first driven bevel gear; the other end of the first rotating shaft is connected with a first rotating disc; a first fixing rod is fixedly arranged in the dust cover; the first driven bevel gear is rotatably arranged on the first fixing rod; the first rotating disc is connected with the first swing plate through a first connecting rod;

[0026] A second driven bevel gear is engaged with the driving bevel gear;

[0027] A second rotating shaft is connected with the second driven bevel gear at one end, and a second rotating disc is connected with the other end of the second rotating shaft; a second fixed rod is fixedly installed in the dust cover, and the second driven bevel gear is rotatably installed on the second fixed rod; the second rotating disc is connected with the second swing plate through a second connecting rod.

[0028] Further, the cooling assembly comprises:

[0029] A first water bag is arranged on the inner wall of the dust cover and close to the first swing plate;

[0030] A second water bag is arranged on the inner wall of the dust cover and close to the second swing plate; the second water bag is communicated with the first water bag through a connecting pipe;

[0031] A cooling pipe is arranged on the casing of the motor body; the cooling pipe is communicated with the first water bag through a water outlet pipe, and communicated with the second water bag through a water inlet pipe.

[0032] Further, the extruding piece comprises a pressing plate, a third connecting rod and a limiting rod;

[0033] One end of the third connecting rod is hingedly connected with the second swing plate, and the other end of the third connecting rod is hingedly connected with the pressing plate;

[0034] The pressing plate is slidably connected with the limiting rod, and the limiting rod allows the pressing plate to move only up and down.

[0035] Further, a fan is arranged on the motor shaft; the fan is located between the heat dissipation net and the driving bevel gear.

[0036] Further, the motor body is provided with heat dissipation fins on the outside.

[0037] Further, the motor body is provided with a base.

[0038] Compared with the prior art, the present application has the following beneficial effects:

[0039] 1. When the first swing plate and the second swing plate swing, the first brush and the second brush are driven to move up and down, and the dust on the dust screen is brushed down, so as to prevent the dust from blocking the dust holes on the dust screen and affecting the heat dissipation of the motor body.

[0040] 2. When the motor body is not working, the V-shaped structure formed by the first swing plate and the second swing plate blocks the dust from entering the motor body from the dust screen, so as to effectively ensure that the motor body plays a dustproof role in the non-use state.

[0041] 3.The second swing plate swings up and down repeatedly to press the pressing plate, so that the cooling liquid in the first water bag and the second water bag circulates and flows, and then the heat dissipation of the motor body is accelerated, and the heat dissipation effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 is the first direction structure schematic diagram of the present application;

[0043] Figure 2 is the second direction structure schematic diagram of the present application;

[0044] Figure 3 is the structure schematic diagram of the rear end cover in the present application;

[0045] Figure 4 is the sectional view of the motor body in the present application;

[0046] Figure 5 is the sectional view of the dust cover in the present application;

[0047] Figure 6 is the connection schematic diagram of the water inlet pipe and the water outlet pipe in the present application;

[0048] Figure 7 is the connection schematic diagram of the water inlet pipe and the water outlet pipe in the present application; Figure 6 is the enlarged view of A part in the present application;

[0049] Figure 8 is the internal structure schematic diagram of the dust cover in the present application (remove the dust cover);

[0050] Figure 9 is the connection schematic diagram of the driving assembly in the present application;

[0051] Figure 10 is the structure schematic diagram of the first swing plate and the second swing plate in the present application;

[0052] Figure 11 is the connection schematic diagram of the second swing plate and the second water bag in the present application;

[0053] Figure 12 is the initial state schematic diagram of the first swing plate and the second swing plate in the present application;

[0054] Figure 13 is the second state schematic diagram of the first swing plate and the second swing plate in the present application;

[0055] Figure 14 is the third state schematic diagram of the first swing plate and the second swing plate in the present application.

[0056] In the diagram: 1. Motor body; 2. Heat dissipation fins; 3. Front end cover; 4. Motor shaft; 5. Base; 6. Dust cover; 7. Screw; 8. Dustproof mesh; 9. Rear end cover; 10. Water outlet pipe; 11. Water inlet pipe; 12. Drive bevel gear; 13. Fan; 14. Heat dissipation mesh; 15. Housing; 16. Cooling pipe; 17. Stator; 18. Rotor; 19. First fixing rod; 20. First turntable; 21. First connecting rod; 22. First fixing shaft; 23. Pressure plate; 24. Second swing plate; 25. First swing plate; 26. First driven bevel gear; 27. Second driven bevel gear; 28. Second turntable; 29. ​​First water bladder; 30. First brush; 31. Slide groove; 32. Second brush; 33. Second magnetic strip; 34. Second water bladder; 35. Limiting rod; 36. First mounting shaft; 37. First bearing; 38. First rotating shaft; 39. First magnetic strip; 40. First connecting plate; 41. First strip hole; 42. Second connecting plate; 43. Third connecting rod; 44. Connecting pipe. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] like Figures 1-14 As shown, the technical solution adopted by the present invention is as follows: An energy-saving three-phase asynchronous motor with high protection capability includes a motor body 1. A front end cover 3 is fixedly provided at one end of the housing 15 of the motor body 1, and a rear end cover 9 is fixedly provided at the other end of the housing 15. A heat dissipation mesh 14 is provided on the rear end cover 9, and the motor shaft 4 of the motor body 1 passes through the rear end cover 9. A dust cover 6 is connected to the rear end cover 9 by a number of screws 7, and a dustproof mesh 8 is provided at the end of the dust cover 6 away from the motor body 1.

[0059] The dust cover 6 houses a drive assembly, a first swing assembly, a second swing assembly, a first brush assembly, a second brush assembly, and a cooling assembly. The drive assembly is connected to the first swing assembly via a first connecting rod 21, and to the second swing assembly via a second connecting rod. The end of the first swing assembly near the dust cover 8 is connected to the first brush assembly, and the end of the second swing assembly near the dust cover 8 is connected to the second brush assembly. The drive assembly drives the first and second swing assemblies to swing simultaneously, thereby causing the first and second brush assemblies to clean the dust cover 8 and prevent dust from clogging it.

[0060] In the initial state, the first and second swing components form a V-shape to prevent dust from entering the motor body 1.

[0061] The first swing assembly comprises a first swing plate 25, and a first strip-shaped hole 41 is arranged on the first swing plate 25.

[0062] The second swing assembly comprises a second swing plate 24, and a second strip-shaped hole is arranged on the second swing plate 24.

[0063] Two first fixed shafts 22 parallel to each other are fixedly arranged in the dust cover 6. The first swing plate 25 is slidably connected with one of the first fixed shafts 22 through the first strip-shaped hole 41, and the second swing plate 24 is slidably connected with the other first fixed shaft 22 through the second strip-shaped hole.

[0064] As shown in the figure, Figure 10 The first brush assembly comprises a first connecting plate 40, a first brush 30 and a first magnetic strip 39. One end of the first connecting plate 40 is hingedly connected with one end of the first swing plate 25 close to the dust screen 8, and the other end of the first connecting plate 40 is fixedly connected with the first brush 30. The first brush 30 is tightly attached to the dust screen 8, and the lower end of the first brush 30 is fixedly arranged with the first magnetic strip 39.

[0065] The second brush assembly comprises a second connecting plate 42, a second brush 32 and a second magnetic strip 33. One end of the second connecting plate 42 is hingedly connected with one end of the second swing plate 24 close to the dust screen 8, and the other end of the second connecting plate 42 is fixedly connected with the second brush 32. The second brush 32 is tightly attached to the dust screen 8. The upper end of the second brush 32 is fixedly arranged with the second magnetic strip 33.

[0066] The dust cover 6 is arranged with a sliding groove 31 on the inner wall of each side of the dust screen 8.

[0067] Both ends of the first brush 30 and the second brush 32 are slidably arranged in the corresponding sliding grooves 31.

[0068] When the motor body 1 works, the motor shaft 4 drives the driving assembly to act, and the driving assembly simultaneously drives the first swing plate 25 and the second swing plate 24 to act. When the first swing plate 25 swings around the corresponding first fixed shaft 22, the first brush 30 slides up and down in the sliding groove 31, and the upper part of the dust screen 8 is cleaned. At the same time, the second swing plate 24 swings around the corresponding first fixed shaft 22, and the second brush 32 cleans the lower part of the dust screen 8. When the motor body 1 stops working, the driving assembly stops driving the first swing plate 25 and the second swing plate 24, the first magnetic strip 39 and the second magnetic strip 33 are attracted to each other and closely attached together, the left end of the first swing plate 25 and the left end of the second swing plate 24 are closely attached together, and due to the action of the two first fixed shafts 22, the first swing plate 25 and the second swing plate 24 form a V shape, so that dust cannot enter the motor body 1 through the heat dissipation screen 14.

[0069] The driving assembly comprises a driving bevel gear 12, a first driven bevel gear 26, a first rotating shaft 38, a first rotating disc 20, a second driven bevel gear 27, a second rotating shaft and a second rotating disc 28.

[0070] The driving bevel gear 12 is fixedly installed on the motor shaft 4. The driving bevel gear 12 is engaged with the first driven bevel gear 26 and the second driven bevel gear 27 respectively. The first driven bevel gear 26 and the second driven bevel gear 27 are symmetrically arranged on both sides of the driving bevel gear 12.

[0071] The first fixed rod 19 and the second fixed rod parallel to the first fixed rod 19 are fixedly installed in the dust cover 6. The first rotating shaft 38 is rotatably installed on the first fixed rod 19 through the first bearing 37. One end of the first rotating shaft 38 is fixedly connected with the first driven bevel gear 26, and the other end of the first rotating shaft 38 is fixedly connected with the first rotating disc 20. The second rotating shaft is rotatably installed on the second fixed rod through the second bearing. One end of the second rotating shaft is fixedly connected with the second driven bevel gear 27, and the other end of the second rotating shaft is fixedly connected with the second rotating disc 28.

[0072] As shown in Figure 10 The first rotating disc 20 is eccentrically provided with the first installation shaft 36. One end of the first connecting rod 21 is hingedly connected with the first installation shaft 36, and the other end of the first connecting rod 21 is hingedly connected with the right end of the first swing plate 25.

[0073] The second rotating disc 28 is eccentrically provided with the second installation shaft. One end of the second connecting rod is hingedly connected with the second installation shaft, and the other end of the second connecting rod is hingedly connected with the right end of the second swing plate 24.

[0074] The first installation shaft 38 and the second installation shaft are symmetrically arranged about the driving bevel gear 12.

[0075] When the motor body 1 works, the motor shaft 4 drives the driving bevel gear 12 to rotate, the driving bevel gear 12 drives the first driven bevel gear 26 and the second driven bevel gear 27 to rotate simultaneously, and drives the first rotating disc 20 and the second rotating disc 28 to rotate simultaneously, thereby driving the first swing plate 25 and the second swing plate 24 to swing simultaneously.

[0076] When the second swing plate 24 swings, in addition to driving the second brush assembly to clean the dust screen 8, the cooling assembly is acted on by the extrusion piece to make the cooling liquid circulate and flow, thereby improving the heat dissipation effect.

[0077] The cooling assembly comprises a first water bag 29, a second water bag 34 and a cooling pipeline 16. The first water bag 29 and the second water bag 34 are elastic and have the characteristics of swelling and restoring to the original state after being extruded. When the liquid inside the first water bag 29 and the second water bag 34 is excessive, the first water bag 29 and the second water bag 34 swell and expand in volume.

[0078] The cooling pipe 16 is laid on the casing 15 of the motor body 1. The outlet of the cooling pipe 16 is communicated with the first water bag 29 through the outlet pipe 10, and the inlet of the cooling pipe 16 is communicated with the second water bag 34 through the inlet pipe 11. The outlet of the cooling pipe 16 is provided with a first one-way valve. The first one-way valve allows the cooling liquid to flow only from the cooling pipe 16 into the first water bag 29. The inlet of the cooling pipe 16 is provided with a second one-way valve. The second one-way valve allows the cooling liquid to flow only from the second water bag 34 into the cooling pipe 16.

[0079] The first water bag 29 is fixedly arranged on the inner wall of the dust cover 6 and above the first swing plate 25. The second water bag 34 is fixedly arranged on the inner wall of the dust cover 6 and below the second swing plate 24. The first water bag 29 and the second water bag 34 are communicated through the connecting pipe 44. The connecting position of the first water bag 29 and the connecting pipe 44 is provided with a third one-way valve. The third one-way valve allows the cooling liquid to flow only from the first water bag 29 into the second water bag 34.

[0080] The arrangement of the first one-way valve, the second one-way valve and the third one-way valve allows the cooling liquid in the cooling assembly to flow only in one direction, i.e. from the second water bag 34 into the cooling pipe 16, from the cooling pipe 16 into the first water bag 29, and from the first water bag 29 into the second water bag 34.

[0081] The pressing member includes the pressing plate 23, the third connecting rod 43 and the limiting rod 35.

[0082] One end of the third connecting rod 43 is hingedly connected to the lower end of the second swing plate 24 and away from the second magnetic strip 33. The other end of the third connecting rod 43 is hingedly connected to the upper end of the pressing plate 23. When the first swing plate 25 and the second swing plate 24 form a V shape, the second swing plate 24 keeps pressing the second water bag 34 through the pressing plate 23, so that the cooling pipe 16 is filled with the cooling liquid. When the external temperature is too high, the cooling liquid in the cooling pipe 16 can cool the motor body 1.

[0083] The limiting rod 35 is provided with four limiting rods 35, which are symmetrically distributed on both sides of the second water bag 34. Each limiting rod 35 is provided with a slide. The pressing plate 23 is arranged above the second water bag 34. The pressing plate 23 is fixedly provided with four limiting blocks, which are respectively in limiting sliding cooperation with the corresponding slides.

[0084] When the second swing plate 24 swings downward, the second swing plate 24 presses the pressing plate 23, the pressing plate 23 presses the second water bag 34, the second water bag 34 is compressed by the pressing, the cooling liquid in the second water bag 34 enters the cooling pipeline 16 through the water inlet pipe 11, and the cooling liquid in the cooling pipeline 16 enters the first water bag 29 through the water outlet pipe 10. When the second swing plate 24 swings upward, the second swing plate 24 no longer presses the pressing plate 23, the second water bag 34 is no longer pressed, and the second water bag 34 gradually recovers. At this time, the cooling liquid in the second water bag 34 has become less, and since the first water bag 29 has more cooling liquid, the pressure in the first water bag 29 is greater than the pressure in the second water bag 34. The cooling liquid in the first water bag 29 enters the second water bag 34 through the connecting pipe 44. When the second swing plate 24 swings up and down, the second water bag 34 is repeatedly pressed by the pressing plate 23, and the cooling liquid is circulated to increase the heat dissipation effect.

[0085] A fan 13 is installed on the motor shaft 4 and is located between the heat dissipation net 14 and the driving bevel gear 12. When the motor shaft 4 rotates, the fan 13 rotates. The fan 13 accelerates the air flow in the dust cover 6, so that the heat at the heat dissipation net 14 is dissipated more quickly, and the heat dissipation efficiency is improved. The fan 13 can also blow the dust in the dust cover 6 to the outside of the dust screen 8.

[0086] The motor body 1 is provided with a heat dissipation fin 2 outside, which further improves the heat dissipation effect.

[0087] The motor body 1 is also provided with a base 5, which facilitates the installation and fixation of the motor body 1.

[0088] The rotor 18 and the stator 17 are arranged in the casing 15. The motor shaft 4 penetrates the rotor 18, and the stator 17 is fixedly connected with the casing 15.

[0089] Working principle: in the initial state, the motor body 1 does not work, the motor shaft 4 does not rotate, the fan 13 does not work, and the driving assembly does not act. The first swing plate 25 and the second swing plate 24 are arranged in the initial state, and the left ends of the first swing plate 25 and the second swing plate 24 are close to each other and form a V shape under the action of the first magnetic strip 39 and the second magnetic strip 33, so as to prevent dust from entering the motor body 1 through the heat dissipation net 14. At the same time, the second swing plate 24 keeps pressing the second water bag 34 through the pressing plate 23, so that the cooling pipeline 16 is filled with cooling liquid, and when the external temperature is too high, the cooling liquid in the cooling pipeline 16 can cool the motor body 1 for protection.

[0090] When the motor body 1 works, the motor shaft 4 drives the fan 13 and the driving bevel gear 12 to rotate, and the first driven bevel gear 26 and the second driven bevel gear 27 rotate simultaneously, but the rotation directions of the first driven bevel gear 26 and the second driven bevel gear 27 are opposite. The first swing plate 25 and the second swing plate 24 swing simultaneously. The first strip-shaped hole 41 on the first swing plate 25 slides along the corresponding first fixed shaft 22, and the second strip-shaped hole on the second swing plate 24 slides along the corresponding first fixed shaft 22.

[0091] When the left ends of the first swing plate 25 and the second swing plate 24 gradually approach each other, the right ends of the first swing plate 25 and the second swing plate 24 gradually move away from each other. When the left ends of the first swing plate 25 and the second swing plate 24 gradually move away from each other, the right ends of the first swing plate 25 and the second swing plate 24 gradually approach each other. The fan 13 blows the wind between the first swing plate 25 and the second swing plate 24, and when the opening between the right ends of the first swing plate 25 and the second swing plate 24 is larger than that between the left ends, the wind speed gradually increases from right to left, so that the dust on the first brush 30 falling on the second magnetic strip 33 is blown out of the dust screen 8.

[0092] The first swing plate 25 drives the first brush 30 to slide up and down in the sliding groove 31, thereby cleaning the dust screen 8 and preventing the dust screen 8 from being blocked by dust. The second swing plate 24 drives the second brush 32 to slide in the sliding groove 31, thereby cleaning the dust screen 8 and preventing the dust screen 8 from being blocked by dust.

[0093] At the same time, when the second swing plate 24 swings downward, the second swing plate 24 extrudes the pressing plate 23, the pressing plate 23 extrudes the second water bag 34, so that the cooling liquid in the second water bag 34 enters the cooling pipeline 16 through the water inlet pipe 11, and the cooling liquid in the cooling pipeline 16 enters the first water bag 29 through the water outlet pipe 10. When the second swing plate 24 swings upward, the second swing plate 24 no longer extrudes the pressing plate 23, and the second water bag 34 returns to its original state, and the cooling liquid in the first water bag 29 enters the second water bag 34 through the connecting pipe 44. The second swing plate 24 repeatedly acts on the second water bag 34 through the pressing plate 23, thereby making the cooling liquid circulate and increasing the heat dissipation effect of the motor body 1.

[0094] When the motor body 1 stops working, under the action of the first magnetic strip 39 and the second magnetic strip 33, the left ends of the first swing plate 25 and the second swing plate 24 are close together, the right ends are open, and the left ends of the first swing plate 25 and the second swing plate 24 form a V shape. The device returns to the initial state.

[0095] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An energy saving three phase induction motor with higher protection capability, characterized by, The utility model relates to a motor cooling device, including: Motor body (1), one end of motor body (1) is equipped with rear end cover (9), rear end cover (9) is equipped with heat dissipation net (14), motor shaft (4) of motor body (1) passes through rear end cover (9), rear end cover (9) is connected with dust cover (6), the one end of dust cover (6) away from motor body (1) is equipped with dust screen (8), dust cover (6) is equipped with in: first swing subassembly, second swing subassembly, drive subassembly, cooling assembly, one end of first swing subassembly is connected with drive subassembly, the one end of first swing subassembly near dust screen (8) is equipped with first brush subassembly, when first swing subassembly act, drive first brush subassembly to clean dust cover (6), one end of second swing subassembly is connected with drive subassembly, the one end of second swing subassembly near dust screen (8) is equipped with second brush subassembly, when second swing subassembly act, drive second brush subassembly to clean dust cover (6), and second swing subassembly is through extruding piece and cooling assembly is acted, and cooling assembly carries out heat dissipation to motor body (1), drive subassembly is connected with motor shaft (4) of motor body (1), and drive subassembly is used to drive first swing board subassembly and second swing subassembly and simultaneously act, First swing subassembly includes first swing board (25), and first swing board (25) is equipped with first strip hole (41), and second swing subassembly includes second swing board (24), and second swing board (24) is equipped with second strip hole, and dust cover (6) is equipped with in 2 first fixed shafts (22) parallel to each other, and first swing board (25) is slidably connected with one of first fixed shaft (22) through first strip hole (41), and second swing board (24) is slidably connected with another one of first fixed shaft (22) through second strip hole, First brush subassembly includes first connecting plate (40), first brush (30), first magnetic strip (39), one end of first connecting plate (40) is hinged with first swing board (25), the other end of first connecting plate (40) is connected with first brush (30), first brush (30) is tightly attached to dust screen (8), first magnetic strip (39) is arranged on first brush (30), second brush subassembly includes second connecting plate (42), second brush (32), second magnetic strip (33), one end of second connecting plate (42) is hinged with second swing board (24) near dust screen (8), the other end of second connecting plate (42) is connected with second brush (32), second brush (32) is tightly attached to dust screen (8), second magnetic strip (33) is arranged on second brush (32), and second magnetic strip (33) has the characteristics of being attracted to first magnetic strip (39).

2. The energy-saving three-phase asynchronous motor with higher protection capability according to claim 1, characterized in that: Dust cover (6) is equipped with chute (31) on both sides of dust screen (8), and first brush (30) and second brush (32) are slidably connected with chute (31).

3. The energy-saving three-phase asynchronous motor with higher protection capability according to claim 1, characterized in that, The driving assembly comprises: a driving bevel gear (12) arranged on a motor shaft (4); a first driven bevel gear (26) engaged with the driving bevel gear (12); a first rotating shaft (38) having one end connected with the first driven bevel gear (26); the other end of the first rotating shaft (38) is connected with a first rotating disc (20); a first fixed rod (19) is fixedly arranged in the dust cover (6), and the first driven bevel gear (26) is rotatably arranged on the first fixed rod (19); the first rotating disc (20) is connected with a first swing plate (25) through a first connecting rod (21); a second driven bevel gear (27) engaged with the driving bevel gear (12); a second rotating shaft having one end connected with the second driven bevel gear (27); the other end of the second rotating shaft is connected with a second rotating disc (28); a second fixed rod is fixedly arranged in the dust cover (6), and the second driven bevel gear (27) is rotatably arranged on the second fixed rod; the second rotating disc (28) is connected with a second swing plate (24) through a second connecting rod.

4. The energy-saving three-phase asynchronous motor with higher protection capability according to claim 1, characterized in that, The cooling assembly comprises: a first water bag (29) arranged on the inner wall of the dust cover (6) and close to the first swing plate (25); a second water bag (34) arranged on the inner wall of the dust cover (6) and close to the second swing plate (24); the second water bag (34) is communicated with the first water bag (29) through a connecting pipe (44); a cooling pipe (16) arranged on the shell (15) of the motor body (1); the cooling pipe (16) is communicated with the first water bag (29) through a water outlet pipe (10); the cooling pipe (16) is communicated with the second water bag (34) through a water inlet pipe (11).

5. The energy-saving three-phase asynchronous motor with higher protection capability according to claim 1, characterized in that: The extruding piece comprises a pressing plate (23), a third connecting rod (43) and a limiting rod (35); one end of the third connecting rod (43) is hingedly connected with the second swing plate (24), and the other end of the third connecting rod (43) is hingedly connected with the pressing plate (23); the pressing plate (23) is slidably connected with the limiting rod (35); the limiting rod (35) allows the pressing plate (23) to move only up and down.

6. The energy-saving three-phase asynchronous motor with higher protection capability according to claim 1, characterized in that: The motor shaft (4) is provided with a fan (13); the fan (13) is located between the heat dissipation net (14) and the driving bevel gear (12).

7. The energy-saving three-phase asynchronous motor with higher protection capability according to claim 1, characterized in that: The motor body (1) is provided with a heat dissipation fin (2) on the outside.

8. The energy saving three-phase induction motor with higher protection capability according to claim 1, characterized in that: The motor body (1) is provided with a base (5).

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