CN218648640U

CN218648640U - Rotor structure for permanent magnet synchronous motor

Info

Publication number: CN218648640U
Application number: CN202222751837.2U
Authority: CN
Inventors: 刘志强; 罗洪清; 吕生国
Original assignee: Jiangsu Zhuerkaog Motor Energy Saving Technology Co ltd
Current assignee: Jiangsu Zhuerkaog Motor Energy Saving Technology Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-03-17
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a rotor structure for a permanent magnet synchronous motor, which comprises a rotor body and an outer shell, wherein a rotating shaft is arranged at the center of the front side of the rotor body, a circular slot hole for the rotating shaft to penetrate is arranged at the center of the front side of the outer shell, a heat conducting plate is sleeved outside the rotor body, and the heat conducting plate is of a cylindrical structure; a plurality of groups of buffer components are arranged on the outer side of the heat conducting plate, each group of buffer components comprises an inner ring steel frame and an outer ring steel frame, a gap is arranged between the outer ring steel frame and the inner ring steel frame, two buffer rubber rings are arranged in the gap between each group of outer ring steel frames and inner ring steel frames, and the two buffer rubber rings are embedded in the outer ring steel frames and the inner ring steel frames; the outside of shell body is provided with a plurality of radiating fins, and this device adopts the buffering subassembly to reduce the influence of the vibration that the rotor produced to the shell body, prevents that PMSM whole from taking place the vibration, realizes the good heat dissipation of rotor body through heat-conducting plate and radiating fin, promotes the performance of rotor, prolongs the life of rotor.

Description

Rotor structure for permanent magnet synchronous motor

Technical Field

The utility model relates to the technical field of motors, concretely relates to rotor structure for permanent magnet synchronous motor.

Background

The motor with the permanent magnet tangential magnetization structure has a magnetic gathering effect, can generate higher air gap magnetic density than a radial structure, has higher torque/current ratio and torque/volume ratio, is increasingly applied to occasions such as servo systems, electric traction, office automation, household appliances and the like, and has the advantages of simple structure, light weight, small volume, reliable operation, high efficiency and continuously expanded application field, and is the same as other types of motors;

and PMSM rotor and pivot can produce the vibration at operation in-process, some trade or occasion that require high to vibration or operating stability, such as aviation, ship, car, produced vibration during the operation, stability etc. still are outstanding problems, need solve urgently, and electric motor rotor can produce heat, the casing radiating effect of traditional rotor is general, and if set up the louvre on the casing can lead to inside dust and foreign matter enter into the casing, influence the performance of rotor, reduce PMSM's life.

Therefore, it is necessary to provide a rotor structure for a permanent magnet synchronous motor to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rotor structure for PMSM to the above-mentioned weak point in the solution technique.

In order to achieve the above object, the present invention provides the following technical solutions:

a rotor structure for a permanent magnet synchronous motor comprises a rotor body and an outer shell, wherein a rotating shaft is installed at the center of the front side of the rotor body, a circular groove hole for the rotating shaft to penetrate through is formed in the center of the front side of the outer shell, a heat conducting plate is sleeved on the outer side of the rotor body, and the heat conducting plate is of a cylindrical structure; a plurality of groups of buffer components are mounted on the outer side of the heat-conducting plate, each group of buffer components comprises an inner ring steel frame and an outer ring steel frame, a plurality of inner ring steel frames are fixedly connected with the outer side of the heat-conducting plate, a plurality of outer ring steel frames are fixedly connected with the inner wall of the outer shell, a gap is formed between each outer ring steel frame and the inner ring steel frame, two buffer rubber rings are mounted in the gap between each group of outer ring steel frames and each group of inner ring steel frames, and the two buffer rubber rings are embedded in the outer ring steel frames and the inner ring steel frames; the outside of shell body is provided with a plurality of radiating fin, and is a plurality of radiating fin is the scattering distribution in outer shell body center department.

Preferably, the inner wall department of the circular slot hole of shell body is provided with a plurality of damper assembly, and is a plurality of damper assembly all is including setting up the holding tank on the circular slot hole inner wall, install regulating spring and movable block in the holding tank, regulating spring's both ends respectively with holding tank bottom and regulating spring bottom fixed connection, the spherical pair is installed at the top of movable block, the spherical pair contacts with the pivot.

Preferably, the number of the shock absorption assemblies in the circular slotted hole is six, and the six accommodating grooves of the shock absorption assemblies are distributed in a scattering manner by using the center of the circular slotted hole.

Preferably, the outer shell is provided with a ring inserting frame far away from one end inside the circular slot, the inner diameter of the ring inserting frame is matched with the diameter of the rotor body, and two rubber rings are embedded inside the ring inserting frame.

Preferably, install a plurality of shock absorbers between rotor body and the shell body, it is a plurality of the shock absorbers all include first piece and the second piece of moving away to avoid possible earthquakes, first piece of moving away to avoid possible earthquakes is connected with the heat-conducting plate outer wall, the second piece of moving away to avoid possible earthquakes is connected with the shell body, the second piece of moving away to avoid possible earthquakes is close to first piece one end of moving away to avoid possible earthquakes and is provided with the opening, inside first piece of moving away to avoid possible earthquakes inserted the second piece of moving away to avoid possible earthquakes, just the second piece of moving away to avoid possible earthquakes internally mounted has shock absorber spring.

Preferably, the first shock absorption blocks are integrally formed with the heat conduction plate, and the second shock absorption blocks are integrally formed with the outer shell.

In the technical scheme, the utility model provides a technological effect and advantage:

aiming at the problem that the rotor structure of the permanent magnet synchronous motor generates vibration to influence the stability and the heat dissipation performance is poor, the device adopts the buffer assembly to reduce the influence of the vibration generated by the rotor on the outer shell, so as to prevent the permanent magnet synchronous motor from generating vibration integrally, and realizes good heat dissipation of the rotor body through the heat conduction plate and the heat dissipation fins, thereby improving the performance of the rotor and prolonging the service life of the rotor; when rotor body function produces the vibration, the sense of shaking can transmit to the inner ring steelframe through the heat-conducting plate on, because have the clearance between outer ring steelframe and the inner ring steelframe and install the buffering and glue the ring, compressive deformation can carry out the buffering shock attenuation, thereby make the sense of shaking that transmits to the shell body reduce, and when rotor body function gave off the heat, the heat can be transmitted to the ring steelframe by the heat-conducting plate on, the ring steelframe is again with heat transfer to the shell body on, carry out the heat exchange through radiating fin and external world, the heat dissipation of realization rotor body that can be better, therefore, the clothes hanger is strong in practicability, and the service life of the motor is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

FIG. 1 is a perspective view of the present invention showing a cut-away view of a portion of the whole body;

FIG. 2 is a cut-away perspective view of the outer housing of the present invention;

FIG. 3 is a perspective view of the inner components of the outer casing of the present invention;

FIG. 4 is a cut-away perspective view of the inside of the outer shell (with the rotor body removed) of the present invention;

fig. 5 is a cut-off and sectional view of the plane of the outer shell of the present invention.

Description of reference numerals:

1. a rotor body; 2. a rotating shaft; 3. an outer housing; 4. a heat conducting plate; 5. a buffer assembly; 6. a suspension assembly; 7. a heat dissipating fin; 8. a shock-absorbing assembly; 31. a circular slot; 32. a ring inserting frame; 51. an inner ring steel frame; 52. an outer ring steel frame; 53. a buffer rubber ring; 61. a first shock-absorbing block; 62. a second shock-absorbing block; 81. a spherical pair; 82. a movable block; 83. accommodating grooves; 84. the spring is adjusted.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the attached drawings.

The utility model provides a rotor structure for permanent magnet synchronous motor as shown in figures 1-5, which comprises a rotor body 1 and an outer shell 3, wherein a rotating shaft 2 is arranged at the center of the front side of the rotor body 1, a circular groove hole 31 for the rotating shaft 2 to pass through is arranged at the center of the front side of the outer shell 3, a heat conducting plate 4 is sleeved at the outer side of the rotor body 1, and the heat conducting plate 4 is of a cylindrical structure; a plurality of groups of buffer components 5 are mounted on the outer side of the heat conduction plate 4, each group of buffer components 5 comprises an inner ring steel frame 51 and an outer ring steel frame 52, the inner ring steel frames 51 are fixedly connected with the outer side of the heat conduction plate 4, the outer ring steel frames 52 are fixedly connected with the inner wall of the outer shell 3, a gap is formed between each outer ring steel frame 52 and the inner ring steel frame 51, two buffer rubber rings 53 are mounted in the gap between each group of outer ring steel frames 52 and each group of inner ring steel frames 51, and the two buffer rubber rings 53 are embedded in the outer ring steel frames 52 and the inner ring steel frames 51; the outside of shell body 3 is provided with a plurality of radiating fins 7, a plurality of radiating fins 7 are the scattering distribution with 3 center departments of shell body, rotor structure function to PMSM produces the poor problem of vibration influence stability and heat dispersion, this device adopts buffering subassembly 5 to reduce the influence of the vibration that the rotor produced to outer casing 3, prevent that PMSM is whole to take place to vibrate, realize rotor body 1's good heat dissipation through heat-conducting plate 4 and radiating fins 7, promote the performance of rotor, prolong the life of rotor.

Further, in the above technical solution, a plurality of damping assemblies 8 are arranged on the inner wall of the circular groove hole 31 of the outer shell 3, each of the plurality of damping assemblies 8 includes an accommodating groove 83 arranged on the inner wall of the circular groove hole 31, an adjusting spring 84 and a movable block 82 are installed in the accommodating groove 83, two ends of the adjusting spring 84 are respectively fixedly connected with the bottom of the accommodating groove 83 and the bottom of the adjusting spring 84, a spherical pair 81 is installed on the top of the movable block 82, and the spherical pair 81 is in contact with the rotating shaft 2;

specifically, rotor body 1 is when the function, and certain vibration also can be produced in pivot 2, and traditional pivot 2 passes through the bearing dish with being connected of shell body 3, and this kind of mode can lead to the vibration of pivot 2 to influence shell body 3, and the influence to shell body 3 through the vibration of the reducible pivot 2 of damper 8, and pivot 2 contacts with spherical pair 81, and the vibration can make adjusting spring 84 adjust, makes movable block 82 carry out certain degree displacement, reduces shell body 3 and is driven the vibration.

Further, in the above technical solution, the number of the shock-absorbing components 8 in the circular slot hole 31 is six, and the accommodating grooves 83 of the six shock-absorbing components 8 are distributed in a scattering manner with the center of the circular slot hole 31;

specifically, the six shock absorption components 8 can better realize the shock absorption effect in more directions.

Further, in the above technical solution, one end of the outer shell 3 away from the inside of the circular slot 31 is provided with an insert ring frame 32, the inner diameter of the insert ring frame 32 is adapted to the diameter of the rotor body 1, and two rubber rings are embedded in the insert ring frame 32;

specifically, the position of the rotor body 1 can be better fixed by the ring inserting frame 32, and the rotor body 1 can prevent the outer shell 3 from being driven to vibrate.

Further, in the above technical solution, a plurality of damper assemblies 6 are installed between the rotor body 1 and the outer shell 3, each of the plurality of damper assemblies 6 includes a first damper block 61 and a second damper block 62, the first damper block 61 is connected with the outer wall of the heat conducting plate 4, the second damper block 62 is connected with the outer shell 3, an opening is provided at one end of the second damper block 62 close to the first damper block 61, the first damper block 61 is inserted into the second damper block 62, and a damper spring is installed inside the second damper block 62;

specifically, when the rotor body 1 vibrates, the first shock absorption block 61 and the second shock absorption block 62 in multiple aspects are adjusted in a telescopic mode through the shock absorption assembly 6, and the shock absorption is realized through the shock absorption springs inside, so that the outer shell 3 is prevented from vibrating, and the permanent magnet synchronous motor is prevented from vibrating.

Further, in the above technical solution, the plurality of first shock absorbing blocks 61 are integrally formed with the heat conducting plate 4, and the plurality of second shock absorbing blocks 62 are integrally formed with the outer shell 3;

in particular, the integral connection of the shock block and other components may increase stability.

This practical theory of operation:

when rotor body 1 operates and produces the vibration, the sense of vibration can be transmitted to inner ring steelframe 51 through heat-conducting plate 4, because have the clearance between outer ring steelframe 52 and the inner ring steelframe 51 and install buffering and glue ring 53, compressive deformation can carry out buffering shock attenuation, thereby make the sense of vibration that transmits to shell body 3 reduce, and when rotor body 1 operates and gives off the heat, the heat can be transmitted to the ring steelframe by heat-conducting plate 4 on, the ring steelframe is again with heat transfer to shell body 3 on, carry out the heat exchange with the external world through radiating fin 7, the heat dissipation of realization rotor body 1 that can be better, therefore, the clothes hanger is strong in practicability, and the service life of a motor is prolonged.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. The utility model provides a rotor structure for PMSM, includes rotor body (1) and shell body (3), its characterized in that: a rotating shaft (2) is installed in the center of the front side of the rotor body (1), a circular groove hole (31) for the rotating shaft (2) to penetrate through is formed in the center of the front side of the outer shell (3), a heat conducting plate (4) is sleeved on the outer side of the rotor body (1), and the heat conducting plate (4) is of a cylindrical structure;

a plurality of groups of buffer components (5) are installed on the outer side of the heat conducting plate (4), each group of buffer components (5) comprises an inner ring steel frame (51) and an outer ring steel frame (52), the inner ring steel frames (51) are fixedly connected with the outer side of the heat conducting plate (4), the outer ring steel frames (52) are fixedly connected with the inner wall of the outer shell (3), a gap is formed between each outer ring steel frame (52) and the inner ring steel frame (51), two buffer rubber rings (53) are installed in the gap between each outer ring steel frame (52) and the inner ring steel frame (51), and the two buffer rubber rings (53) are embedded in the outer ring steel frame (52) and the inner ring steel frame (51);

the outer side of the outer shell (3) is provided with a plurality of radiating fins (7), and the radiating fins (7) are distributed in a scattering mode in the center of the outer shell (3).

2. The rotor structure for a permanent magnet synchronous motor according to claim 1, wherein: the inner wall department of the circular slot hole (31) of shell body (3) is provided with a plurality of damper assembly (8), and is a plurality of damper assembly (8) all are including setting up holding tank (83) on circular slot hole (31) inner wall, install regulating spring (84) and movable block (82) in holding tank (83), the both ends of regulating spring (84) respectively with holding tank (83) bottom and regulating spring (84) bottom fixed connection, spherical pair (81) are installed at the top of movable block (82), spherical pair (81) contact with pivot (2).

3. The rotor structure for a permanent magnet synchronous motor according to claim 2, characterized in that: the number of the shock absorption assemblies (8) in the circular groove hole (31) is six, and the accommodating grooves (83) of the shock absorption assemblies (8) are distributed in a scattering manner by using the center of the circular groove hole (31).

4. The rotor structure for a permanent magnet synchronous motor according to claim 1, characterized in that: the inner end of the circular groove hole (31) far away from the outer shell (3) is provided with a ring inserting frame (32), the inner diameter of the ring inserting frame (32) is matched with the diameter of the rotor body (1), and two rubber rings are embedded in the ring inserting frame (32).

5. The rotor structure for a permanent magnet synchronous motor according to claim 1, wherein: install a plurality of shock absorbers (6) between rotor body (1) and shell body (3), it is a plurality of shock absorbers (6) all include first shock absorber piece (61) and second shock absorber piece (62), first shock absorber piece (61) are connected with heat-conducting plate (4) outer wall, second shock absorber piece (62) are connected with shell body (3), second shock absorber piece (62) are close to first shock absorber piece (61) one end and are provided with the opening, inside first shock absorber piece (61) insert second shock absorber piece (62), just second shock absorber piece (62) internally mounted has shock absorber spring.

6. The rotor structure for a permanent magnet synchronous motor according to claim 5, characterized in that: the first shock absorption blocks (61) are integrally formed with the heat conduction plate (4), and the second shock absorption blocks (62) are integrally formed with the outer shell (3).