CN218498958U

CN218498958U - High-speed permanent magnet motor

Info

Publication number: CN218498958U
Application number: CN202121780768.7U
Authority: CN
Inventors: 姚久刚; 陈启军
Original assignee: Jiangsu Match Well Electrical Products Co ltd
Current assignee: Jiangsu Match Well Electrical Products Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2023-02-17
Anticipated expiration: 2031-08-02

Abstract

The utility model discloses a high-speed permanent magnet motor, which comprises an outer shell, one side of shell is provided with the front end housing, one side of front end housing is provided with the front bearing with the inside of shell, the inside of front bearing is provided with the main shaft, the main shaft is close to the inside one side of shell and is provided with rotor mechanism, the utility model discloses in be provided with first net for current one side that is close to radiator fan at the rear end cap through the rear end cap change with traditional cylinder structure, a week department at the rear end cap is provided with the second net to first net is the structure of fretwork with the second net, can make wind-force flow at the internal circulation of rear end cap like this to reach better radiating effect. The utility model discloses in be provided with the layer board through the outside at the permanent magnet, be provided with the hole in the inside of layer board moreover, can be so that play radiating effect under the effect of hole.

Description

High-speed permanent magnet motor

Technical Field

The utility model relates to a permanent-magnet machine technical field, in particular to high-speed permanent-magnet machine.

Background

The permanent magnet synchronous motor has the advantages of simple structure, small size, high efficiency, high power factor and the like. At present, the permanent magnet synchronous motor has gained performance in medium and low voltage motors in the industries of metallurgy, ceramics, rubber, petroleum, textile and the like, and gradually accumulates design and operation experience.

However, the rear end cover inside the conventional motor is generally of a cylindrical structure with a hollow interior, but when wind blows, wind cannot be sufficiently circulated due to the cylindrical structure, and thus a phenomenon of poor heat dissipation effect may occur.

Therefore, it is necessary to provide a high-speed permanent magnet motor to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high-speed permanent-magnet machine to the rear end cap of solving among the above-mentioned background art leads to the radiating bad problem of effect for tight structure.

In order to achieve the above purpose, the utility model provides a following technical scheme: the high-speed permanent magnet motor comprises a shell, a front end cover is arranged on one side of the shell, a front bearing is arranged on one side of the front end cover and inside the shell, a main shaft is arranged inside the front bearing, a rotor mechanism is arranged on one side of the main shaft close to the inside of the shell, a stator is arranged at the intersection of the outer side of the rotor mechanism and the shell, a band-type brake is arranged on one side of the rotor mechanism far away from the main shaft, a rear bearing is arranged on one side of the band-type brake far away from the rotor mechanism, and a rear end cover is arranged on one side of the rear bearing far away from the band-type brake,

the rear end cover is characterized in that a cooling fan is arranged on one side, away from the rear bearing, of the rear end cover, the rear end cover is composed of a first grid, a cover body, a second grid and a connecting plate, the cover body is installed at the upper axle center of the connecting plate, the second grid is installed at the intersection of the cover body and the connecting plate, and the first grid is installed at the upper axle center of the cover body.

As a further aspect of the present invention, the rotor mechanism is composed of a supporting plate, a rotor main body, a permanent magnet and a stator winding, the stator winding is installed in the inside of the stator around the axis, the rotor main body is installed in the inside axis of the stator winding, the supporting plate is installed in the front axis of the rotor main body, and the permanent magnet is installed in the intersection of the rotor main body and the supporting plate and runs through the rotor main body.

As a further aspect of the present invention, the first grid and the second grid are both structures of internal hollows, and the outside of the first grid and the second grid is covered with a protective net.

As a further scheme of the utility model, the shell is inside hollow cylinder structure, the below of shell is provided with the frame, rings are installed to the top of shell, the terminal box is installed to top one side of shell, and the inside of terminal box is provided with the power wiring.

As a further aspect of the present invention, the intersection of the rear end cap and the rear bearing is installed and decoded, and the decoder is electrically connected to the junction box.

As a further proposal of the utility model, the intersection of the front bearing and the front end cover is provided with a sealing structure, and the upper and lower sides of the inside of the sealing structure are respectively penetrated by a connecting screw rod.

As a further aspect of the present invention, the supporting plate is a plate-shaped structure of a circular disc body, and a plurality of holes are provided at the intersection of the supporting plate and the rotor body.

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

the utility model discloses in be provided with first net for current one side that is close to radiator fan at the rear end cap through the rear end cap change with traditional cylinder structure, a week department at the rear end cap is provided with the second net to first net is the structure of fretwork with the second net, can be so that wind-force flows at the inner loop of rear end cap, thereby reaches better radiating effect.

The utility model discloses in be provided with the layer board through the outside at the permanent magnet, be provided with the hole in the inside of layer board moreover, can be so that play radiating effect under the effect of hole.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is a schematic sectional structure diagram of a high-speed permanent magnet motor of the present invention;

fig. 2 is a schematic front view of the rotor structure of the present invention;

fig. 3 is a schematic cross-sectional structural view of the rear end cap of the present invention.

In the figure: 1. a main shaft; 2. a front end cap; 3. a front bearing; 4. a rotor mechanism; 41. a pallet; 42. a rotor body; 43. a permanent magnet; 44. a stator winding; 5. a rear bearing; 6. a rear end cap; 61. a first grid; 62. a cover body; 63. a second grid; 64. a connecting plate; 7. a housing; 8. a stator; 9. a sealing structure; 10. a hoisting ring; 11. a junction box; 12. a heat radiation fan; 13. a decoder; 14. a frame; 15. and (4) contracting a brake.

Detailed Description

[ example 1 ] A method for producing a polycarbonate

As shown in fig. 1 and fig. 3, the high-speed permanent magnet motor includes a housing 7, a front end cap 2 is disposed on one side of the housing 7, a front bearing 3 is disposed between one side of the front end cap 2 and the inside of the housing 7, a main shaft 1 is disposed inside the front bearing 3, a rotor mechanism 4 is disposed on one side of the main shaft 1 close to the inside of the housing 7, a stator 8 is disposed at an intersection of an outer side of the rotor mechanism 4 and the housing 7, a band-type brake 15 is disposed on one side of the rotor mechanism 4 away from the main shaft 1, a rear bearing 5 is disposed on one side of the band-type brake 15 away from the rotor mechanism 4, a rear end cap 6 is disposed on one side of the rear bearing 5 away from the band-type brake 15,

the side of the rear end cover 6 far away from the rear bearing 5 is provided with a heat radiation fan 12, the rear end cover 6 is composed of a first grid 61, a cover body 62, a second grid 63 and a connecting plate 64, the cover body 62 is arranged at the upper axle center of the connecting plate 64, the second grid 63 is arranged at the intersection of the cover body 62 and the connecting plate 64, and the first grid 61 is arranged at the upper axle center of the cover body 62.

When the synchronous traction device is used specifically, the decoder 13 is connected with a power supply under the action of the junction box 11, then a command is issued, so that the rotor mechanism 4 rotates, the rotor mechanism 4 and the stator 8 generate a magnetic field mutually, and a torque is generated under the mutual action to pull the rotor main body 42 into a synchronous operation state, so that the main shaft 1 is driven to rotate.

[ example 2 ]

As shown in fig. 2, the rotor mechanism 4 is composed of a supporting plate 41, a rotor main body 42, a permanent magnet 43 and a stator winding 44, the stator winding 44 is installed at the inner periphery of the stator 8, the rotor main body 42 is installed at the inner axial center of the stator winding 44, the supporting plate 41 is installed at the front axial center of the rotor main body 42, and the permanent magnet 43 is installed at the intersection of the rotor main body 42 and the supporting plate 41 and penetrates through the rotor main body 42.

In particular, under the action of the supporting plate 41, the permanent magnet 43 can be supported.

[ example 3 ]

As shown in fig. 3, the first grid 61 and the second grid 63 are both hollow structures, and the outer sides of the first grid 61 and the second grid 63 are covered with a protective net.

When the dust collector is used specifically, through the arrangement of the protective net, more dust can be prevented from entering the dust collector.

[ example 4 ]

As shown in fig. 1, the housing 7 is a cylindrical structure with a hollow interior, a frame 14 is disposed below the housing 7, a hanging ring 10 is mounted above the housing 7, a junction box 11 is mounted on one side above the housing 7, and a power supply connection is disposed inside the junction box 11.

In specific use, the terminal box 11 and the decoder 13 can be electrically connected through the arrangement of power supply wiring.

[ example 5 ] A method for producing a polycarbonate

As shown in fig. 1, the decoder 13 is mounted at the intersection of the rear end cap 6 and the rear bearing 5, and the decoder 13 is electrically connected to the junction box 11.

When the motor is used specifically, under the action of the decoder 13, the motor can be better controlled.

[ example 6 ]

As shown in fig. 1, a sealing structure 9 is disposed at the intersection of the front bearing 3 and the front end cover 2, and a connecting screw rod penetrates through each of the upper and lower sides of the interior of the sealing structure 9.

During specific use, through the setting of seal structure 9, can be so that connecting inseparabler, through the setting of connecting screw rod moreover to can be better connect.

[ example 7 ] A method for producing a polycarbonate

As shown in fig. 2, the supporting plate 41 is a plate-shaped structure of a circular disc, and a plurality of holes are formed at the intersection of the supporting plate 41 and the rotor body 42.

When the heat dissipation structure is used specifically, under the arrangement of the plurality of holes, the rotor body 42 can dissipate heat better.

The working principle is as follows: when the junction box 11 is powered on, the rotor mechanism 4 and the stator 8 rotate mutually at this time, so as to drive the main shaft 1 to rotate, and when the motor is at rest, three-phase symmetrical current is applied to the stator winding 44 to generate a stator rotating magnetic field, the stator rotating magnetic field generates current in the cage winding relative to the rotor rotation to form a rotor rotating magnetic field, and asynchronous torque generated by interaction of the stator rotating magnetic field and the rotor rotating magnetic field causes the rotor main body 42 to start to accelerate from rest. In the process, the rotating speeds of the rotor permanent magnetic field and the stator rotating magnetic field are different, and alternating torque can be generated. When the rotor body 42 accelerates to a speed close to the synchronous speed, the speed of the rotor permanent magnetic field is approximately equal to that of the stator rotating magnetic field, the speed of the stator rotating magnetic field is slightly greater than that of the rotor permanent magnetic field, and the rotor permanent magnetic field and the stator rotating magnetic field interact to generate torque to pull the rotor body 42 into the synchronous operation state. In the synchronous operating state, no current is generated in the rotor winding. Only the permanent magnets 43 on the rotor body 42 generate a magnetic field at this time, which interacts with the stator rotating magnetic field, generating a driving torque,

the heat inside the motor can be dissipated by the heat dissipating fan 12, so that the phenomenon of burning out caused by excessive internal heat is avoided.

Claims

1. High-speed permanent-magnet machine, including shell (7), its characterized in that: one side of the shell (7) is provided with a front end cover (2), one side of the front end cover (2) and the inside of the shell (7) are provided with a front bearing (3), the inside of the front bearing (3) is provided with a main shaft (1), one side of the main shaft (1) close to the inside of the shell (7) is provided with a rotor mechanism (4), the outer side of the rotor mechanism (4) and the intersection of the shell (7) are provided with a stator (8), one side of the rotor mechanism (4) far away from the main shaft (1) is provided with a band-type brake (15), one side of the band-type brake (15) far away from the rotor mechanism (4) is provided with a rear bearing (5), one side of the rear bearing (5) far away from the band-type brake (15) is provided with a rear end cover (6),

one side of the rear end cover (6) far away from the rear bearing (5) is provided with a heat radiation fan (12), the rear end cover (6) is composed of a first grid (61), a cover body (62), a second grid (63) and a connecting plate (64), the cover body (62) is installed at the upper axis of the connecting plate (64), the second grid (63) is installed at the intersection of the cover body (62) and the connecting plate (64), and the first grid (61) is installed at the upper axis of the cover body (62).

2. The high-speed permanent magnet machine of claim 1, wherein: the rotor mechanism (4) is composed of a supporting plate (41), a rotor main body (42), a permanent magnet (43) and a stator winding (44), the stator winding (44) is installed on the inner periphery of the stator (8), the rotor main body (42) is installed on the inner axis of the stator winding (44), the supporting plate (41) is installed on the front axis of the rotor main body (42), and the permanent magnet (43) is installed on the intersection of the rotor main body (42) and the supporting plate (41) and penetrates through the rotor main body (42).

3. The high-speed permanent magnet machine of claim 1, wherein: the first grid (61) and the second grid (63) are both of a structure with hollow interiors, and protective nets are covered on the outer sides of the first grid (61) and the second grid (63).

4. The high-speed permanent magnet machine of claim 1, wherein: the shell (7) is a hollow cylinder structure, a rack (14) is arranged below the shell (7), a lifting ring (10) is installed above the shell (7), a junction box (11) is installed on one side of the top of the shell (7), and power wiring is arranged inside the junction box (11).

5. The high-speed permanent magnet machine of claim 1, wherein: the decoder (13) is installed at the intersection of the rear end cover (6) and the rear bearing (5), and the decoder (13) is electrically connected with the junction box (11).

6. The high-speed permanent magnet machine of claim 1, wherein: the front bearing (3) and the front end cover (2) are intersected to form a sealing structure (9), and the upper side and the lower side of the interior of the sealing structure (9) are respectively provided with a connecting screw rod in a penetrating mode.

7. The high-speed permanent magnet machine of claim 2, wherein: the supporting plate (41) is of a disc-shaped structure, and a plurality of holes are formed in the intersection of the supporting plate (41) and the rotor main body (42).