CN217362742U - Energy-saving three-phase asynchronous motor with higher protection capability - Google Patents

Abstract

The utility model discloses an energy-saving three-phase asynchronous motor with higher protection capability, which comprises a motor body and a rear end cover, wherein the rear end cover is connected with a dust cover; one end of the dust cover, which is far away from the motor body, is provided with a dust screen; the dust cover is internally provided with: the device comprises a first swing assembly, a second swing assembly, a driving assembly and a cooling assembly; the driving component is used for driving the first swing plate component and the second swing component to act simultaneously. When first swing board and the swing of second swing board, drive first brush and second brush and reciprocate, brush the dust on the dust screen down to prevent that the dust from blockking up the dust guard hole on the dust screen, when the motor body was out of work, the V-arrangement that first swing board and second swing board constitute, thereby it enters into the motor body from the dust screen to block the dust. Meanwhile, the pressing plate can be repeatedly extruded while the second swinging plate swings up and down, so that the cooling liquid circularly flows, and the heat dissipation of the motor body is accelerated.

Description

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

Technical Field

The utility model belongs to the technical field of the motor, a energy-conserving three-phase asynchronous motor with higher protective capacities is related to.

Background

Inside external dust or granule entered into the motor, the dust adhesion can influence the motor and normally work on the motor internals, can damage the motor even, influences the life of motor. Therefore, a dust cover is required to prevent dust from entering the motor. The motor can produce a large amount of heats usually at the working process, if can not in time dispel the heat, can influence the use of motor, often sets up the louvre on the shield and dispels the heat. But in the dust entered into the motor organism through the louvre, the dust adhesion can influence the work of motor on inside part, and the dust sticks on the louvre simultaneously, blocks up the louvre, will reduce the radiating efficiency again.

In order to solve the problem, the utility model provides an energy-conserving three-phase asynchronous motor with higher protective capacities.

SUMMERY OF THE UTILITY MODEL

For solving the problem that exists among the background art, the utility model provides an energy-conserving three-phase asynchronous motor with higher protective capacities.

In order to realize the purpose, the utility model discloses a technical scheme as follows: comprises that

The motor comprises a motor body, wherein one end of the motor body is provided with a rear end cover; the rear end cover is provided with a heat dissipation net; a motor shaft of the motor body penetrates through the rear end cover; the rear end cover is connected with a dust cover; one end of the dust cover, which is far away from the motor body, is provided with a dust screen; the dust cover is internally provided with: the device comprises a first swing assembly, a second swing assembly, a driving assembly and a cooling assembly;

one end of the first swinging assembly is connected with the driving assembly; one end of the first swinging component, which is close to the dust screen, is provided with a first brush component; the first swinging assembly drives the first brush assembly to clean the dust cover when acting;

one end of the second swinging assembly is connected with the driving assembly; one end of the second swinging assembly, which is close to the dust screen, is provided with a second brush assembly; the second swinging assembly drives the second brush assembly to clean the dust cover when acting, and meanwhile, the second swinging assembly acts on the cooling assembly through the extrusion piece, so that the cooling assembly dissipates heat of the motor body;

the driving assembly is connected with a motor shaft of the motor body; the driving assembly is used for driving the first swing plate assembly and the second swing assembly to act simultaneously.

Further, the first swing assembly includes a first swing plate; the first swinging plate is provided with a first strip-shaped hole;

the second swing assembly includes a second swing plate; a second strip-shaped hole is formed in the second swinging plate;

2 first fixing shafts which are parallel to each other are arranged in the dust cover; the first swinging plate is connected with one first fixed shaft in a sliding mode through a first strip-shaped hole; the second swinging plate is connected with the other first fixed shaft in a sliding mode through a second strip-shaped hole.

Furthermore, the first brush assembly comprises a first connecting plate, a first brush and a first magnetic strip;

one end of the first connecting plate is hinged with the first swinging plate; the other end of the first connecting plate is connected with a first brush;

the first brush is tightly attached to the dust screen;

the first magnetic strip is arranged on the first brush;

the second brush component comprises a second connecting plate, a second brush and a second magnetic strip;

one end of the second connecting plate is hinged with one end of the second swinging plate close to the dust screen; the other end of the second connecting plate is connected with a second brush;

the second brush is tightly attached to the dust screen;

the second magnetic strip is arranged on the second brush; the second magnetic strip and the first magnetic strip have the characteristic of attraction.

Furthermore, the dust cover is located the both sides of dust screen and all is equipped with the spout, first brush, second brush all with spout sliding connection.

Further, the drive assembly includes:

the driving bevel gear is arranged on a motor shaft;

the first driven bevel gear is meshed with the driving bevel gear;

one end of the first rotating shaft is connected with a first driven bevel gear; the other end of the first rotating shaft is connected with a first rotating disc; a first fixed rod is fixedly arranged in the dust cover, and the first driven bevel gear is rotatably arranged on the first fixed rod; the first rotating disc is connected with the first swinging plate through a first connecting rod;

the second driven bevel gear is meshed with the driving bevel gear;

one end of the second rotating shaft is connected with a second driven bevel gear; the other end of the second rotating shaft is connected with a second rotating disc; a second fixed rod is fixedly arranged in the dust cover, and the second driven bevel gear is rotatably arranged on the second fixed rod; the second turntable is connected with the second swinging plate through a second connecting rod.

Further, the cooling assembly includes:

the first water bag is arranged on the inner wall of the dust cover and is close to the first swinging plate;

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

the cooling pipeline is arranged on the shell of the motor body; the cooling pipeline is communicated with the first water bag through a water outlet pipe; the cooling pipeline is communicated with the second water bag through a water inlet pipe.

Further, the extrusion part comprises a pressing plate, a third connecting rod and a limiting rod;

one end of the third connecting rod is hinged with the second swinging plate, and the other end of the third connecting rod is hinged with the pressing plate;

the pressing plate is connected with the limiting rod in a sliding manner; the limiting rod enables the pressing plate to move up and down only.

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

Furthermore, the outside of the motor body is provided with heat dissipation fins.

Further, the motor body is provided with a base.

Compared with the prior art, the utility model discloses following beneficial effect has:

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 to brush down dust on the dustproof net, so that the dust is prevented from blocking dustproof holes in the dustproof net, and heat dissipation of the motor body is prevented from being influenced.

2. When the motor body does not work, the V-shaped that first swing board and second swing board are constituteed to it is internal to block that the dust enters into the motor body from the dust screen, thereby has effectively guaranteed that the motor body plays dirt-proof effect under the condition of not using.

3. Meanwhile, the pressing plate can be repeatedly extruded when the second swinging plate swings up and down, so that the cooling liquid in the first water bag and the cooling liquid in the second water bag circularly flow, the heat dissipation of the motor body is accelerated, and the heat dissipation effect is improved.

Drawings

Fig. 1 is a schematic view of a first directional structure of the present invention;

fig. 2 is a schematic view of the second directional structure of the present invention;

FIG. 3 is a schematic structural view of a rear end cap according to the present invention;

fig. 4 is a cross-sectional view of the motor body according to the present invention;

FIG. 5 is a cross-sectional view of a middle dust cap of the present invention;

FIG. 6 is a schematic view of the connection between the water inlet pipe and the water outlet pipe of the present invention;

FIG. 7 is an enlarged view of the portion A in FIG. 6;

FIG. 8 is a schematic view of the inner structure of the middle dust cover (with the dust cover removed);

fig. 9 is a schematic view of the connection of the driving assembly of the present invention;

FIG. 10 is a schematic view of the first and second swing plates of the present invention;

FIG. 11 is a schematic view showing the connection between the second swing plate and the second water bladder according to the present invention;

fig. 12 is a schematic view showing an initial state of the first and second swing plates according to the present invention;

fig. 13 is a second state diagram of the first and second swing plates according to the present invention;

fig. 14 is a third state diagram of the first and second swing plates according to the present invention.

In the figure: 1. a motor body; 2. heat dissipation fins; 3. a front end cover; 4. a motor shaft; 5. a base; 6. a dust cover; 7. a screw; 8. a dust screen; 9. a rear end cap; 10. a water outlet pipe; 11. a water inlet pipe; 12. a drive bevel gear; 13. a fan; 14. a heat-dissipating web; 15. a housing; 16. a cooling pipe; 17. a stator; 18. a rotor; 19. a first fixing lever; 20. a first turntable; 21. a first connecting rod; 22. a first fixed shaft; 23. pressing a plate; 24. a second swing plate; 25. a first swing plate; 26. a first driven bevel gear; 27. a second driven bevel gear; 28. a second turntable; 29. a first water bladder; 30. a first brush; 31. a chute; 32. a second brush; 33. a second magnetic stripe; 34. a second water bladder; 35. a limiting rod; 36. a first mounting shaft; 37. a first bearing; 38. a first rotating shaft; 39. a first magnetic stripe; 40. a first connecting plate; 41. a first bar-shaped hole; 42. a second connecting plate; 43. a third connecting rod; 44. and (4) connecting the pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-14, the technical solution adopted by the present invention is as follows: the utility model provides an energy-conserving three-phase asynchronous motor with higher protective capacities, includes motor body 1, and motor body 1's casing 15 one end is fixed and is equipped with front end housing 3, and the other end of casing 15 is fixed with rear end housing 9. The rear end cover 9 is provided with a heat dissipation net 14, and the motor shaft 4 of the motor body 1 penetrates through the rear end cover 9. The rear end cover 9 is connected with a dust cover 6 through a plurality of screws 7, and one end of the dust cover 6, which is far away from the motor body 1, is provided with a dust screen 8.

A driving assembly, a first swinging assembly, a second swinging assembly, a first brush assembly, a second brush assembly and a cooling assembly are arranged in the dust cover 6. The driving assembly is connected with the first swing assembly through a first connecting rod 21, and the driving assembly is connected with the second swing assembly through a second connecting rod. One end of the first swinging component, which is close to the dustproof net 8, is connected with the first brush component, and one end of the second swinging component, which is close to the dustproof net 8, is connected with the second brush component. The driving assembly drives the first swing assembly and the second swing assembly to swing simultaneously, so that the first brush assembly and the second brush assembly clean the dust screen 8, and dust is prevented from blocking the dust screen 8.

The first swing assembly and the second swing assembly are v-shaped in the initial state, and dust is prevented from entering the motor body 1.

The first swinging assembly includes a first swinging plate 25, and a first strip-shaped hole 41 is formed on the first swinging plate 25.

The second swing assembly includes a second swing plate 24, and a second strip-shaped hole is formed in the second swing plate 24.

2 first fixing shafts 22 which are parallel to each other are fixedly arranged in the dust cover 6. The first swinging plate 25 is slidably coupled to one of the first fixed shafts 22 through the first strip-shaped hole 41, and the second swinging plate 24 is slidably coupled to the other of the first fixed shafts 22 through the second strip-shaped hole.

As shown in fig. 10, the first brush assembly includes a first connecting plate 40, a first brush 30, and a first magnetic stripe 39. One end of the first connecting plate 40 is hinged to 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 to the first brush 30. The first brush 30 is tightly attached to the dust screen 8, and a first magnetic strip 39 is fixedly mounted at the lower end of the first brush 30.

The second brush assembly comprises a second connecting plate 42, a second brush 32 and a second magnetic strip 33. One end of second connecting plate 42 is hinged to one end of second swinging plate 24 close to dust screen 8, and the other end of second connecting plate 42 is fixedly connected to second brush 32. The second brush 32 is closely attached to the dust-proof net 8. The upper end of the second brush 32 is fixedly provided with a second magnetic strip 33.

The inner walls of the dust cover 6 at two sides of the dust screen 8 are provided with sliding grooves 31.

The two ends of the first brush 30 and the second brush 32 are slidably disposed in the corresponding sliding slots 31.

When the motor body 1 works, the motor shaft 4 drives the driving component to move, the driving component drives the first swinging plate 25 and the second swinging plate 24 to move simultaneously, and when the first swinging plate 25 swings around the corresponding first fixing shaft 22, the first brush 30 is driven to slide up and down in the chute 31 to clean the upper part of the dust screen 8. Meanwhile, the second swing plate 24 swings around the corresponding first fixed shaft 22, and drives the second brush 32 to clean the lower portion of the dust screen 8. When the motor body 1 stops working and the driving assembly stops driving the first swinging plate 25 and the second swinging plate 24, the first magnetic strip 39 and the second magnetic strip 33 attract each other and are close to each other to be attached together, so as to drive the left end of the first swinging plate 25 and the left end of the second swinging plate 24 to be attached together, and the first swinging plate 25 and the second swinging plate 24 form a V shape due to the action of the 2 first fixing shafts 22, so that dust can be prevented from entering the motor body 1 through the heat dissipation net 14.

The driving assembly includes a drive bevel gear 12, a first driven bevel gear 26, a first rotary shaft 38, a first rotary disk 20, a second driven bevel gear 27, a second rotary shaft, and a second rotary disk 28.

The drive bevel gear 12 is fixedly mounted on the motor shaft 4. The drive bevel gear 12 is engaged with a first driven bevel gear 26 and a second driven bevel gear 27, respectively. The first driven bevel gear 26 and the second driven bevel gear 27 are symmetrically disposed at both sides of the drive bevel gear 12.

A first fixing rod 19 and a second fixing rod parallel to the first fixing rod 19 are fixedly installed in the dust cover 6. The first rotating shaft 38 is rotatably mounted on the first fixing rod 19 through a 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 mounted on the second fixing rod through a 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.

As shown in fig. 10, the first rotary disk 20 is eccentrically provided with a first mounting shaft 36. One end of the first connecting rod 21 is hinged to the first mounting shaft 36, and the other end of the first connecting rod 21 is hinged to the right end of the first swing plate 25.

The second turntable 28 is eccentrically provided with a second mounting shaft. One end of the second connecting rod is hinged to the second mounting shaft, and the other end of the second connecting rod is hinged to the right end of the second swing plate 24.

The first and second mounting shafts 38 and 38 are symmetrically disposed about the drive bevel gear 12.

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 simultaneously rotate, the first rotating disc 20 and the second rotating disc 28 are driven to simultaneously rotate, and the first swinging plate 25 and the second swinging plate 24 are driven to simultaneously swing.

When the second swing plate 24 swings, the second brush assembly is driven to clean the dust screen 8, and the second brush assembly acts on the cooling assembly through the extrusion piece, so that the cooling liquid circularly flows, and the heat dissipation effect is improved.

The cooling assembly comprises a first water bag 29, a second water bag 34 and a cooling pipeline 16. The first and second water bladders 29, 34 have elasticity and have the property of expanding and returning to their original shape after being pressed. When the liquid in the first and second water bags 29 and 34 is excessive, the bag expands and expands in volume.

The cooling duct 16 is laid on the casing 15 of the motor body 1. The water outlet of the cooling pipeline 16 is communicated with the first water bag 29 through the water outlet pipe 10, and the water inlet of the cooling pipeline 16 is communicated with the second water bag 34 through the water inlet pipe 11. A first check valve is arranged at the water outlet of the cooling pipeline 16. The first check valve allows the coolant to flow only from the cooling pipe 16 into the first water pocket 29. The water inlet of the cooling pipe 16 is provided with a second check valve which allows the coolant to flow only from the second water bladder 34 into the cooling pipe 16.

The first water pocket 29 is fixedly provided on the inner wall of the dust cover 6 above the first swing plate 25. The second water bladder 34 is fixedly provided on the inner wall of the dust cover 6 below the second swing plate 24. The first water bladder 29 and the second water bladder 34 are communicated through a connection pipe 44. And a third one-way valve is arranged at the joint of the first water bag 29 and the connecting pipe 44. The third check valve allows the coolant to flow only from the first water bladder 29 into the second water bladder 34.

The first check valve, the second check valve and the third check valve are arranged so that the cooling liquid in the cooling assembly can only flow in one direction from the second water bag 34 into the cooling pipeline 16, from the cooling pipeline 16 into the first water bag 29 and from the first water bag 29 into the second water bag 34.

The extrusion comprises a pressure plate 23, a third connecting rod 43 and a limiting rod 35.

One end of the third connecting rod 43 is hinged to the lower end of the second swing plate 24 and is far away from the second magnetic stripe 33. The other end of the third connecting rod 43 is hinged with the upper end of the pressure plate 23. When the first and second swinging plates 25, 24 are in a V shape, the second swinging plate 24 keeps pressing the second water bag 34 through the pressing plate 23, so that the cooling duct 16 is filled with the cooling liquid, and when the outside temperature is too high, the cooling liquid in the cooling duct 16 can cool and protect the motor body 1.

There are 4 gag lever posts 35, and the symmetric distribution is in the both sides of second water pocket 34, and every gag lever post 35 all is equipped with the slide. The pressing plate 23 is arranged above the second water bag 34, 4 limiting blocks are fixedly arranged on the pressing plate 23, and the 4 limiting blocks are respectively in limiting sliding fit with the corresponding slideways.

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 pressed and compressed, the cooling liquid in the second water bag 34 enters the cooling pipe 16 through the water inlet pipe 11, and the cooling liquid in the cooling pipe 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 bladder 34 is no longer pressed, the second water bladder 34 gradually recovers to its original shape, and the coolant in the second water bladder 34 becomes less, and the pressure in the first water bladder 29 is greater than the pressure in the second water bladder 34 because there is more coolant in the first water bladder 29. The cooling liquid in the first water pocket 29 is introduced into the second water pocket 34 through the connection pipe 44. When the second swinging plate 24 continuously swings up and down, the pressing plate 23 repeatedly acts on the second water bag 34, so that the cooling liquid circularly flows, and the heat dissipation effect is improved.

The motor shaft 4 is provided with a fan 13, and the fan 13 is positioned between the heat dissipation mesh 14 and the drive 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 radiating net 14 can be radiated more quickly, and the radiating efficiency is improved. The fan 13 can also blow dust in the dust cover 6 out of the dust screen 8.

The outside of the motor body 1 is provided with the heat dissipation fins 2, so that the heat dissipation effect is further improved.

The motor body 1 is further provided with a base 5, so that the motor body 1 can be conveniently and fixedly installed.

A rotor 18 and a stator 17 are provided in the housing 15. The motor shaft 4 passes through the rotor 18, the stator 17 and the casing 15 and is fixedly connected.

The working principle is as follows: in an 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. Under the action of the first magnetic strip 39 and the second magnetic strip 33, the left ends of the first swinging plate 25 and the second swinging plate 24 are close to each other to form a V shape, and dust is prevented from entering the motor body 1 through the heat dissipation net 14. Meanwhile, the second swinging plate 24 keeps extruding 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 and protect the motor body 1.

When the motor body 1 is operated, the motor shaft 4 rotates the fan 13 and the driving bevel gear 12, and the first driven bevel gear 26 and the second driven bevel gear 27 rotate at the same time, but the first driven bevel gear 26 and the second driven bevel gear 27 rotate in opposite directions. The first swing plate 25 and the second swing plate 24 swing at the same time. The first strip-shaped holes 41 on the first swinging plate 25 slide along their corresponding first fixed shafts 22, and the second strip-shaped holes on the second swinging plate 24 slide along their corresponding first fixed shafts 22.

As the left ends of the first and second swing plates 25, 24 are gradually brought closer to each other, the right ends of the first and second swing plates 25, 24 are gradually moved away from each other. As the left ends of the first and second swing plates 25, 24 are gradually moved away from each other, the right ends of the first and second swing plates 25, 24 are gradually moved closer to each other. The fan 13 blows air between the first and second swing plates 25 and 24, and when the opening between the right ends of the first and second swing plates 25 and 24 is larger than the left end, the wind speed gradually increases from right to left, so that dust falling onto the second magnetic stripe 33 from the first brush 30 is blown to the outside of the dust screen 8.

The first swinging plate 25 drives the first brush 30 to slide up and down in the chute 31, and further cleans the dust-proof net 8, and prevents dust from blocking the dust-proof net 8. The second swing plate 24 drives the second brush 32 to slide in the chute 31, so as to clean the dust-proof net 8, and prevent dust from blocking the dust-proof net 8.

Meanwhile, when the second swing plate 24 swings downwards, the second swing plate 24 presses the pressing plate 23, and the pressing plate 23 presses 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 presses the pressing plate 23, the second water bladder 34 returns to its original shape, and the cooling liquid in the first water bladder 29 enters the second water bladder 34 through the connecting pipe 44. The second swinging plate 24 repeatedly acts on the second water pocket 34 through the pressing plate 23, thereby circulating the cooling liquid and increasing the heat radiation effect on the motor body 1.

When the motor body 1 stops working, under the action of the first magnetic strip 39 and the second magnetic strip 33, the left end of the first swinging plate 25 and the left end of the second swinging plate 24 are close to each other, the right end is opened, and the left end of the first swinging plate 25 and the second swinging plate 24 are in a V shape. The device reverts to the initial state.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (10)

1. An energy-saving three-phase asynchronous motor with high protection capability is characterized by comprising the following components:

the motor comprises a motor body (1), wherein a rear end cover (9) is arranged at one end of the motor body (1); the rear end cover (9) is provided with a heat dissipation net (14); a motor shaft (4) of the motor body (1) penetrates through the rear end cover (9); the rear end cover (9) is connected with a dust cover (6); a dust screen (8) is arranged at one end of the dust cover (6) far away from the motor body (1); the dust cover (6) is internally provided with: the device comprises a first swing assembly, a second swing assembly, a driving assembly and a cooling assembly;

one end of the first swinging assembly is connected with the driving assembly; one end of the first swinging component, which is close to the dust screen (8), is provided with a first brush component; the first swinging component drives the first brush component to clean the dust cover (6) when acting;

one end of the second swinging assembly is connected with the driving assembly; one end of the second swinging component, which is close to the dust screen (8), is provided with a second brush component; the second swinging assembly drives the second brush assembly to clean the dust cover (6) when acting, and meanwhile, the second swinging assembly acts on the cooling assembly through the extrusion piece, so that the cooling assembly dissipates heat of the motor body (1);

the driving assembly is connected with a motor shaft (4) of the motor body (1); the driving assembly is used for driving the first swing plate assembly and the second swing assembly to act simultaneously.

2. An energy-saving three-phase asynchronous motor with high protection capability according to claim 1, characterized in that: the first swing assembly comprises a first swing plate (25); a first strip-shaped hole (41) is formed in the first swinging plate (25);

the second swing assembly includes a second swing plate (24); a second strip-shaped hole is formed in the second swinging plate (24);

2 first fixing shafts (22) which are parallel to each other are arranged in the dust cover (6); the first swinging plate (25) is connected with one first fixed shaft (22) in a sliding way through a first strip-shaped hole (41); the second swinging plate (24) is connected with the other first fixed shaft (22) in a sliding way through a second strip-shaped hole.

3. An energy-saving three-phase asynchronous motor with high protection capability according to claim 2, characterized in that: the first brush component 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 hinged with the first swinging plate (25); the other end of the first connecting plate (40) is connected with a first brush (30);

the first brush (30) is tightly attached to the dust screen (8);

the first magnetic strip (39) is arranged on the first brush (30);

the second brush component 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 hinged with one end of the second swinging plate (24) close to the dust screen (8); the other end of the second connecting plate (42) is connected with a second brush (32);

the second brush (32) is tightly attached to the dust screen (8);

the second magnetic strip (33) is arranged on the second brush (32); the second magnetic strip (33) and the first magnetic strip (39) have the characteristic of attraction.

4. An energy-saving three-phase asynchronous motor with high protection capability according to claim 3, characterized in that:

the two sides of the dust cover (6) on the dust screen (8) are provided with sliding grooves (31), and the first brush (30) and the second brush (32) are connected with the sliding grooves (31) in a sliding mode.

5. An energy-saving three-phase asynchronous motor with high protection capability according to claim 2, characterized in that said driving assembly comprises:

the driving bevel gear (12), the said driving bevel gear (12) locates on motor shaft (4);

a first driven bevel gear (26), the first driven bevel gear (26) being engaged with the drive bevel gear (12);

a first rotating shaft (38), wherein one end of the first rotating shaft (38) is connected with a first driven bevel gear (26); the other end of the first rotating shaft (38) is connected with a first rotating disc (20); a first fixing rod (19) is fixedly arranged in the dust cover (6), and the first driven bevel gear (26) is rotatably arranged on the first fixing rod (19); the first rotary disc (20) is connected with a first swinging plate (25) through a first connecting rod (21);

a second driven bevel gear (27), the second driven bevel gear (27) being engaged with the drive bevel gear (12);

one end of the second rotating shaft is connected with a 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 rotary disc (28) is connected with the second swinging plate (24) through a second connecting rod.

6. An energy-saving three-phase asynchronous motor with high protection capacity according to claim 2, characterized in that said cooling assembly comprises:

a first water bag (29), wherein the first water bag (29) is arranged on the inner wall of the dust cover (6) and is close to the first swinging plate (25);

the second water bag (34), the said second water bag (34) locates the inboard wall of the dust cover (6), and is 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);

the cooling pipeline (16) is arranged on the shell (15) of the motor body (1); the cooling pipeline (16) is communicated with the first water bag (29) through a water outlet pipe (10); the cooling pipeline (16) is communicated with the second water bag (34) through a water inlet pipe (11).

7. An energy-saving three-phase asynchronous motor with high protection capability according to claim 2, characterized in that: the extrusion part comprises a pressing plate (23), a third connecting rod (43) and a limiting rod (35);

one end of the third connecting rod (43) is hinged with the second swinging plate (24), and the other end of the third connecting rod (43) is hinged with the pressing plate (23);

the pressure plate (23) is connected with the limiting rod (35) in a sliding manner; the limiting rod (35) enables the pressing plate (23) to move only up and down.

8. An energy-saving three-phase asynchronous motor with high protection capability according to claim 1, characterized in that: a fan (13) is arranged on the motor shaft (4); the fan (13) is positioned between the heat dissipation net (14) and the drive bevel gear (12).

9. An energy-saving three-phase asynchronous motor with high protection capability according to claim 1, characterized in that: and heat dissipation fins (2) are arranged outside the motor body (1).

10. An energy-saving three-phase asynchronous motor with high protection capability according to claim 1, characterized in that: the motor body (1) is provided with a base (5).

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