CN216774404U

CN216774404U - Motor rotor structure

Info

Publication number: CN216774404U
Application number: CN202122945355.6U
Authority: CN
Inventors: 李媛媛; 邓孔书; 谢敦彦
Original assignee: Hunan Dundundun Intelligent Technology Co ltd; Hunan University of Science and Technology
Current assignee: Hunan Dundundun Intelligent Technology Co ltd; Hunan University of Science and Technology
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-06-17
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a motor rotor structure, which belongs to the field of motors and comprises a rotor shaft, a silicon steel sheet group consisting of a plurality of silicon steel sheets, a wire groove and a rotor groove, wherein the rotor shaft is arranged on the rotor shaft; the middle of the silicon steel sheet is provided with a through hole, and the silicon steel sheet is stacked on the rotor shaft through the through hole; at least two wire grooves are arranged and are annularly distributed on the silicon steel sheet; the rotor grooves are at least two groups, the rotor grooves are annularly distributed on the silicon steel sheet, the rotor grooves are positioned on an extension line which is collinear with the wire grooves, and the cross sections of the rotor grooves are oval. Can be through adopting oval-shaped rotor groove on the silicon steel sheet, because the shape of adoption is oval, on the one hand, need not to handle the rotor groove corner that originally adopts square shape, can avoid the hand to be scratched on the staff snatchs the silicon steel sheet. On the other hand, when the silicon steel sheet is processed and formed, the whole body of the silicon steel sheet is not deformed due to the processing of the rotor groove, and the forming rate of the silicon steel sheet is ensured.

Description

Motor rotor structure

Technical Field

The utility model relates to the field of motors, in particular to a motor rotor structure.

Background

The motor is used as an important power device and is applied to various fields such as national defense, aerospace, industrial and agricultural production, information processing, automobile electrical equipment, daily life and the like.

In practical application, the whole silicon steel cannot be directly adopted to manufacture the iron core, but the silicon steel is just processed into a sheet shape, so that the eddy current loss is reduced. In general, a rotor of an electric motor is formed by stacking and pressing a plurality of integrally cut silicon steel sheets through a punching process. By adopting the processing mode, the rotor groove is easy to be damaged when the silicon steel sheet is cut and formed, so that the silicon steel sheet becomes waste, a large amount of waste of materials is caused, the production cost is increased, and the processing is difficult.

Traditionally, people align and stack the rotor silicon steel sheets together by a multi-purpose manual method, and then position the rotor silicon steel sheets by using a positioning key, so that a large amount of working time is needed, the alignment effect is poor, and when the rotor silicon steel sheets are stacked, the rotor slots on the silicon steel sheets need to be observed, the silicon steel sheets are prevented from being stored in the rotor slots which are not finished, so that the overlapping effect of the rotor silicon steel sheets in subsequent work is influenced, and the heat dissipation effect of the rotor slots is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a motor rotor structure, which can avoid hand scratch on a silicon steel sheet when a worker grabs the silicon steel sheet by adopting an elliptical rotor groove. On the other hand, when the silicon steel sheet is processed and formed, the whole body of the silicon steel sheet is not deformed due to the processing of the rotor groove, and the forming rate of the silicon steel sheet is ensured.

In order to solve the above problems, the present invention adopts the following technical solutions.

A motor rotor structure comprises a rotor shaft, a silicon steel sheet group consisting of a plurality of silicon steel sheets, a wire groove and a rotor groove; the middle of the silicon steel sheet is provided with a through hole, and the silicon steel sheet is stacked on the rotor shaft through the through hole; at least two wire grooves are arranged and are annularly distributed on the silicon steel sheet; the rotor grooves are at least two groups, the rotor grooves are annularly distributed on the silicon steel sheet, the rotor grooves are positioned on an extension line which is collinear with the wire grooves, and the cross sections of the rotor grooves are oval.

Furthermore, at least two through grooves are arranged in each group of rotor grooves.

Furthermore, when the silicon steel sheets are stacked, the position of each silicon steel sheet is combed through a stacked piece, and the rotor groove is pressed, wherein the stacked piece comprises a limiting pipe sleeve, a working pipe sleeve, a connecting plate, a straightening plate and a power source; a placing plate is arranged on the side end face of the limiting pipe sleeve; the working pipe sleeve is arranged in the side end face of the limiting pipe sleeve in a sliding mode, and a spring is connected between the working pipe sleeve and the placing plate; the connecting plate is arranged on the outer surface of the limiting pipe sleeve; the at least two groups of the straightening plates are arranged, the straightening plates are annularly distributed on the inner side surface of the circumference of the working pipe sleeve, and a limiting groove is formed in the end surface of the straightening plate, which is close to the side end of the limiting pipe sleeve; the power supply is arranged in the connecting plate, and when the working pipe sleeve rotates under the driving of the power supply, the working pipe sleeve can slide in the length direction of the limiting pipe sleeve.

Furthermore, the power source adopts a servo motor which is provided with a motor shaft.

Further, a motor shaft of the power source is fixedly provided with a threaded pipe sleeve, and the outer surface of the threaded pipe sleeve is provided with at least one transmission groove; the outer surface of the working pipe sleeve is provided with external threads.

Furthermore, a limiting plate is fixedly arranged on the inner side face of the circumference of the limiting pipe sleeve, and the shape of the limiting plate is the same as that of the silicon steel sheet.

Furthermore, an extrusion plate is arranged on the end face of the side of the straightening plate, which is close to the limiting pipe sleeve.

Compared with the prior art, the utility model has the advantages that:

one, this scheme is through adopting oval-shaped rotor groove on the silicon steel sheet, because the shape of adoption is oval, on the one hand, need not to handle the rotor groove corner that originally adopts square shape, can avoid the hand to be scratched on the staff snatchs the silicon steel sheet. On the other hand, when the silicon steel sheet is processed and formed, the whole body of the silicon steel sheet is not deformed due to the processing of the rotor groove, and the forming rate of the silicon steel sheet is ensured.

Two, this scheme can increase the efficiency of air heat conduction at the motor during operation through adopting oval-shaped rotor groove, effectively guarantees the stable effect of motor in work.

When a plurality of silicon steel sheets are stacked on the rotor shaft, the aligning plate is contacted with the silicon steel sheets and aligned with the silicon steel sheets firstly through the rotation of the working pipe sleeve, so that the silicon steel sheets enter the limiting pipe sleeve and can fall on the limiting plate temporarily. Because the external thread on the working pipe sleeve and the thread transmission between the thread pipe sleeves, so that the working pipe sleeve can gradually move towards the direction close to the limiting plate in the rotating process, and the extrusion plate extrudes the rotor groove on the silicon steel sheet, the extrusion plate can press the rotor groove which is not finished, and the adverse conditions of protrusion and the like on the surface of the rotor groove are avoided. And in the continuous rotation process of the working pipe sleeve, the extrusion plate slides the silicon steel sheet which is pressed flatly into the limiting plate with the same shape as the silicon steel sheet, so that the silicon steel sheet is stacked.

When the external thread on the working pipe sleeve rotates to the transmission groove of the threaded pipe sleeve, the working pipe sleeve can pop out the working pipe sleeve under the action of the spring return, so that the swing plate can jump the silicon steel sheet, the silicon steel sheet can slide into the working pipe sleeve more quickly and effectively, the silicon steel sheet can be stacked more quickly, and the working efficiency is improved.

Fifth, this scheme passes through power supply servo motor to in-process according to actual silicon steel sheet closed assembly, the speed in the spacing pipe box is put into in order to the adjustment silicon steel sheet under the circumstances of guaranteeing to be worked and neatly, so that work efficiency obtains guaranteeing.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of a silicon steel sheet according to the present invention;

fig. 3 is a schematic perspective view of the stack of the present invention.

The reference numbers in the figures illustrate:

the rotor shaft comprises a rotor shaft 1, silicon steel sheets 2, a wire groove 3, a rotor groove 4, a stacked piece 5, a limiting pipe sleeve 51, a limiting plate 511, a placing plate 512, a working pipe sleeve 52, a connecting plate 53, a straightening plate 54, an extrusion plate 541, a power source 55 and a threaded pipe sleeve 551.

Detailed Description

Referring to fig. 1-3, a rotor structure of an electric motor includes a rotor shaft 1, a silicon steel sheet set composed of a plurality of silicon steel sheets 2, a wire slot 3 and a rotor slot 4; the middle of the silicon steel sheet 2 is provided with a through hole, and the silicon steel sheet 2 is stacked on the rotor shaft 1 through the through hole; at least two wire grooves 3 are formed, and the wire grooves 3 are annularly distributed on the silicon steel sheet 2; rotor groove 4 is equipped with at least two sets ofly, and rotor groove 4 annular distribution is on silicon steel sheet 2, and rotor groove 4's position is on the extension line with line groove 3 collinear, and rotor groove 4's cross-section is oval. At least two through grooves are arranged in each group of rotor grooves 4.

Referring to fig. 3, when the silicon steel sheets 2 are stacked, the position of each silicon steel sheet 2 is combed by the stack 5, and the rotor slot 4 is pressed, wherein the stack 5 includes a limit pipe sleeve 51, a working pipe sleeve 52, a connecting plate 53, a centering plate 54 and a power source 55; a placing plate 512 is arranged on the end face of the side of the limiting pipe sleeve 51; the working pipe sleeve 52 is arranged in the side end face of the limiting pipe sleeve 51 in a sliding mode, and a spring is connected between the working pipe sleeve 52 and the placing plate 512; the connecting plate 53 is arranged on the outer surface of the limiting pipe sleeve 51; at least two groups of the straightening plates 54 are arranged, the straightening plates 54 are annularly distributed on the inner side surface of the circumference of the working pipe sleeve 52, and a limit groove is arranged in the end surface of the straightening plate 54 close to the side end of the limit pipe sleeve 51; the power source 55 is provided in the connection plate 53, and when the working socket 52 is rotated by the power source 55, the working socket 52 slides in the longitudinal direction of the limit socket 51. The power source 55 is a servo motor with a motor shaft. A motor shaft of the power source 55 is fixedly provided with a threaded pipe sleeve 551, and the outer surface of the threaded pipe sleeve 551 is provided with at least one transmission groove; the outer surface of working socket 52 is externally threaded. The inner side surface of the circumference of the limiting pipe sleeve 51 is fixedly provided with a limiting plate 511, and the shape of the limiting plate 511 is the same as the shape of the silicon steel sheet 2. The side end face of the straightening plate 54 close to the limit pipe sleeve 51 is provided with a squeezing plate 541.

Through adopting oval-shaped rotor groove 4 on silicon steel sheet 2, because the shape of adoption is oval, on the one hand, need not to handle the 4 corners in rotor groove that originally adopt the square shape, can avoid the hand to be scratched on staff snatchs silicon steel sheet 2. On the other hand, when the silicon steel sheet 2 is processed and formed, the whole silicon steel sheet 2 is not deformed due to the processing of the rotor groove 4, and the forming rate of the silicon steel sheet 2 is ensured.

When a plurality of silicon steel sheets 2 are stacked on the rotor shaft 1, a worker places the rotor shaft 1 through the through holes on the silicon steel sheets 2, places the rotor shaft 1 in the limiting pipe sleeve 51, starts the power source 55 to enable the motor shaft to drive the threaded pipe sleeve 551 to rotate, so that the threaded pipe sleeve 551 and the external threads on the working pipe sleeve 52 are in threaded transmission, and in the rotating process of the working pipe sleeve 52, the aligning plate 54 is firstly contacted and aligned with the silicon steel sheets 2, so that the silicon steel sheets 2 enter the limiting pipe sleeve 51 and can temporarily fall on the limiting plate 511. Because the external thread on the working pipe sleeve 52 is in transmission with the threaded pipe sleeve 551 in a threaded manner, the working pipe sleeve 52 can gradually move towards the direction close to the limiting plate 511 in the rotating process, so that the extrusion plate 541 extrudes the rotor groove 4 on the silicon steel sheet 2, the extrusion plate 541 can be contacted with the rotor groove 4 which is not finished first until the rotor groove 4 which is not finished is pressed for finishing under the matching of the limiting plate 511, and the adverse conditions of protrusion and the like on the surface of the rotor groove 4 are avoided. During the continuous rotation of the working pipe sleeve 52, the pressing plate 541 slides the pressed and flattened silicon steel sheet 2 into the limiting plate 511 with the same shape as the pressing plate, so as to realize the stacking of the silicon steel sheets 2.

In the continuous rotation process of the threaded pipe sleeve 551, when the external thread on the working pipe sleeve 52 rotates to the transmission groove of the threaded pipe sleeve 551, the working pipe sleeve 52 can pop up the working pipe sleeve 52 under the action of the spring return, so that the straightening plate 54 can perform jumping type pushing on the silicon steel sheet 2, the silicon steel sheet 2 can slide into the working pipe sleeve 52 faster and more effectively, the silicon steel sheet 2 can be stacked more quickly, and the working efficiency is improved.

Claims

1. An electric motor rotor structure characterized in that: comprises a rotor shaft (1), a silicon steel sheet group consisting of a plurality of silicon steel sheets (2), a wire groove (3) and a rotor groove (4);

the middle of the silicon steel sheet (2) is provided with a through hole, and the silicon steel sheet (2) is stacked on the rotor shaft (1) through the through hole;

at least two wire grooves (3) are formed, and the wire grooves (3) are annularly distributed on the silicon steel sheet (2);

rotor groove (4) are equipped with at least two sets ofly, and rotor groove (4) ring distribution is on silicon steel sheet (2), and the position of rotor groove (4) is on the extension line with line groove (3) collinear, and the cross-section of rotor groove (4) is oval.

2. A rotor structure of an electric machine according to claim 1, characterized in that: at least two through grooves are arranged in each group of rotor grooves (4).

3. A rotor structure of an electric machine according to claim 1, characterized in that: when the silicon steel sheets (2) are stacked, the position of each silicon steel sheet (2) is combed through a stacked piece (5), and a rotor groove (4) is pressed, wherein the stacked piece (5) comprises a limiting pipe sleeve (51), a working pipe sleeve (52), a connecting plate (53), a straightening plate (54) and a power source (55);

a placing plate (512) is arranged on the end face of the side of the limiting pipe sleeve (51);

the working pipe sleeve (52) is arranged in the side end face of the limiting pipe sleeve (51) in a sliding mode, and a spring is connected between the working pipe sleeve (52) and the placing plate (512);

the connecting plate (53) is arranged on the outer surface of the limiting pipe sleeve (51);

at least two groups of the straightening plates (54) are arranged, the straightening plates (54) are annularly distributed on the inner side surface of the circumference of the working pipe sleeve (52), and a limiting groove is formed in the end surface of the straightening plate (54) close to the side end of the limiting pipe sleeve (51);

the power source (55) is arranged in the connecting plate (53), and when the working pipe sleeve (52) is driven by the power source (55) to rotate, the working pipe sleeve (52) can slide in the length direction of the limiting pipe sleeve (51).

4. A rotor structure for an electrical machine according to claim 3, wherein: the power source (55) adopts a servo motor which is provided with a motor shaft.

5. A rotor structure of an electric machine according to claim 4, characterized in that: a motor shaft of the power source (55) is fixedly provided with a threaded pipe sleeve (551), and the outer surface of the threaded pipe sleeve (551) is provided with at least one transmission groove; the outer surface of the working pipe sleeve (52) is provided with external threads.

6. A rotor structure of an electric machine according to claim 3, characterized in that: the inner side surface of the circumference of the limiting pipe sleeve (51) is fixedly provided with a limiting plate (511), and the shape of the limiting plate (511) is the same as the shape of the silicon steel sheet (2).

7. A rotor structure of an electric machine according to claim 3, characterized in that: an extrusion plate (541) is arranged on the side end face of the straightening plate (54) close to the limiting pipe sleeve (51).