CN218997795U

CN218997795U - Motor rotor structure of making an uproar and motor falls

Info

Publication number: CN218997795U
Application number: CN202223032154.8U
Authority: CN
Inventors: 王怀平; 杨宏良; 叶海栋; 葛文峰
Original assignee: Ningbo Splash Pool Appliance Co ltd
Current assignee: Ningbo Splash Pool Appliance Co ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-05-09
Anticipated expiration: 2032-11-15

Abstract

The utility model discloses a motor noise reduction rotor structure and a motor, which comprises a rotor core, wherein the rotor core consists of a plurality of sections of rotor sections, the rotor sections consist of a plurality of pieces of magnetic steel, the rotor sections are provided with magnetic steel grooves, the circumferences of the magnetic steel grooves are uniformly distributed on the outer side wall of the rotor sections, the axes of the magnetic steel grooves are parallel to the axes of the rotor sections, and the magnetic steel grooves on two adjacent rotor sections are staggered, and the stagger angle is 1-10 degrees. The structure is characterized in that the staggered magnetic steel grooves can effectively reduce cogging torque and reduce vibration generated by motor operation.

Description

Motor rotor structure of making an uproar and motor falls

Technical Field

The utility model relates to the technical field of motor parts, in particular to a motor noise reduction rotor structure and a motor.

Background

In recent years, with the development of power electronics technology, computer technology and automatic control technology, a servo control system is increasingly widely applied in many high-tech fields, an alternating current servo motor serving as a power component of the servo control system has the advantages of high control precision, good torque frequency characteristic, overload capacity, good acceleration performance and the like, and the motor has the problem of cogging torque, wherein the cogging torque is torque generated by interaction between a permanent magnet and a stator core when a permanent magnet motor winding is not electrified and is caused by tangential components of interaction force between the permanent magnet and armature teeth, the cogging torque can cause the motor to generate vibration and noise, and rotational speed fluctuation is generated, so that the motor cannot stably run, and the performance of the motor is affected.

The utility model discloses a special magnetic shoe chute of a direct current motor, which comprises a rotary magnetic body, wherein the rotary magnetic body comprises a plurality of rotor sections, the adjacent rotor sections are staggered, the centers of the rotor sections are positioned on the same axis, the staggered angle between the adjacent rotor sections is 0-7 degrees, the centers of the rotor sections are provided with shaft holes for installing rotating shafts, the outer peripheral surface of the rotor sections are provided with mounting grooves for installing magnetic shoes, the magnetic shoes are made of magnetic steel, the rotor sections are uniformly provided with connecting grooves and connecting holes, the connecting grooves and the connecting holes are arranged between the mounting grooves, the connecting holes are arranged between the connecting grooves, the positions of the mounting grooves, which are close to ports of the outer Zhou Yiduan of the rotor sections, are provided with limiting parts, and the other ends of the mounting grooves are provided with positioning parts.

The prior art solutions described above have the following drawbacks: the magnetic shoe chute is formed by combining a plurality of silicon steel sheets, and the staggering angle between every two silicon steel sheets is 0-7 degrees, so that the structure is difficult and complicated in assembly process and high in required cost. Meanwhile, the correspondingly formed magnetic shoe mounting grooves are also obliquely arranged, so that the magnetic shoe is inconvenient to mount.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the motor noise reduction rotor structure and the motor, which effectively reduce the influence of cogging torque on the operation of the motor, and have simple structure and low cost.

In order to achieve the purpose, the motor noise reduction rotor structure comprises a rotor iron core, wherein the rotor iron core is composed of a plurality of rotor sections, the rotor sections are composed of a plurality of pieces of magnetic steel, the rotor sections are provided with magnetic steel grooves, the circumferences of the magnetic steel grooves are uniformly distributed on the outer side wall of each rotor section, the axes of the magnetic steel grooves are parallel to the axes of the rotor sections, and the magnetic steel grooves on two adjacent rotor sections are staggered, and the staggering angle is 1-10 degrees. The structure is characterized in that the magnetic steel grooves which are arranged in a staggered way form a plurality of mutually deviated cogging torques, so that vibration and noise generated by motor operation are reduced.

In order to reduce the assembly difficulty, the multi-section rotor section is two sections. The two-section rotor section structure is only added with a pressing procedure based on the original production, and compared with the common rotor production, the pressing procedure is relatively less in addition.

In order to ensure the rotor effect, the rotor sections are provided with magnetic shoe grooves, and connecting holes are formed in positions close to the circle centers of the rotor sections.

In order to further ensure the rotor effect, the magnetic shoe grooves and the connecting holes are circumferentially and uniformly distributed on the two sections of rotor sections. The magnetic shoe grooves and the connecting holes which are uniformly distributed on the circumference are uniformly stressed when the rotor core rotates.

In order to improve the strength of the rotor core, the connecting shafts are connected and communicated when the two rotor sections are combined, and the multi-section rotor sections are fixed through the connecting holes by rivets. The improvement of the strength of the rotor core can reduce vibration generated during the operation of the motor.

Meanwhile, the utility model provides a motor, which comprises the motor noise reduction rotor structure, wherein the motor noise reduction rotor structure forms a plurality of mutually deviated cogging torques through magnetic steel grooves which are arranged in a staggered mode, and vibration and noise generated by motor operation are reduced.

Compared with the prior art, the rotor iron core is formed by only adopting a plurality of sections of rotor sections, and compared with the prior art, the rotor iron core is formed by combining a plurality of silicon steel sheets and even each silicon steel sheet in a rotationally staggered manner by a certain angle, the production process is fewer, the effect of reducing cogging torque is still maintained, meanwhile, the assembly process of correspondingly arranging the connecting holes is easy, and the strength of the rotor is also ensured.

Drawings

FIG. 1 is a schematic diagram of embodiment 1 of the present utility model;

FIG. 2 is a top view of embodiment 1 of the present utility model;

FIG. 3 is a front view of embodiment 1 of the present utility model;

FIG. 4 is a transverse cross-sectional view of embodiment 1 of the present utility model;

FIG. 5 is a vertical sectional view of embodiment 1 of the present utility model;

FIG. 6 is a top view of embodiment 2 of the present utility model;

wherein: rotor core 1, rotor section 2, magnet steel groove 3, magnetic shoe groove 4, connecting hole 5.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

Example 1

As shown in fig. 1, fig. 2 and fig. 3, the motor noise reduction rotor structure described in this embodiment includes a rotor core 1, the rotor core 1 is composed of a plurality of rotor sections 2, the rotor sections 2 are two sections, the rotor sections 2 are composed of a plurality of pieces of magnetic steel, the rotor sections 2 are provided with magnetic steel grooves 3, the circumferences of the magnetic steel grooves 3 are uniformly distributed on the outer side wall of the rotor sections 2, the axes of the magnetic steel grooves 3 are parallel to the axes of the rotor sections 2, the magnetic steel grooves 3 on two adjacent rotor sections 2 are staggered, the staggering angle is 1-10 °, as shown in fig. 4 and fig. 5, magnetic shoe grooves 4 are arranged on the rotor sections, connecting holes 5 are arranged at positions close to the circle centers of the rotor sections 2, the magnetic shoe grooves 4 and the connecting holes 5 are circumferentially uniformly distributed on the two rotor sections 2, the magnetic shoe grooves 4 and the connecting holes 5 are connected and communicated when the two adjacent rotor sections 2 are combined, and the plurality of rotor sections 2 are fixed through rivets passing through the connecting holes 5.

In the embodiment, when the motor noise reduction rotor structure works, the motor noise reduction rotor structure is fixed on a stator through the fixed shaft, the rotor core 1 rotates after the motor is electrified, and the magnetic circuit of the motor magnetic field is changed through the dislocation design of the magnetic steel grooves 3 by 1-10 degrees, so that the cogging torque of the motor is reduced, and the vibration and noise of the motor are reduced.

Example 2

As shown in fig. 6, the motor noise reduction rotor structure described in this embodiment includes a rotor core 1, the rotor core 1 is formed by a plurality of rotor segments 2, the plurality of rotor segments 2 are three segments, the rotor segments 2 are formed by a plurality of pieces of magnetic steel, the circumferences of the magnetic steel grooves 3 are uniformly distributed on the outer side wall of the rotor segments 2, the axes of the magnetic steel grooves 3 are parallel to the axes of the rotor segments 2, the magnetic steel grooves 3 on two adjacent rotor segments 2 are staggered, the staggering angle is 1 °, and deflect in the same direction, the rotor segments 2 are all provided with magnetic shoe grooves 4, a connecting hole 5 is arranged at a position close to the center of the rotor segments 2, the circumferences of the magnetic shoe grooves 4 and the connecting hole 5 are uniformly distributed on the three rotor segments 2, the magnetic shoe grooves 4 and the connecting hole 5 are connected and communicated when the two adjacent rotor segments 2 are combined, and the plurality of rotor segments 2 are fixed through rivets passing through the connecting hole 5.

Example 3

The motor described in this embodiment includes the motor noise reduction rotor structure shown in embodiment 1, where the motor noise reduction rotor structure forms a plurality of mutually offset cogging torques through magnetic steel grooves that are staggered, so as to reduce vibration and noise generated during operation of the motor, and detailed embodiments may refer to fig. 1-5, and are not described herein.

The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the present utility model in any way, although the present utility model has been described above with reference to the preferred embodiments, and is not intended to limit the present utility model. Any person skilled in the art should make equivalent embodiments belonging to equivalent changes and modifications by using the technical content disclosed in the above description without departing from the technical content of the present utility model, but any brief introduction modification, equivalent changes and modifications made to the above embodiments according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. The utility model provides a rotor structure of making an uproar falls in motor, includes rotor core (1), rotor core (1) comprises multistage rotor section (2), a serial communication port, rotor section (2) are constituteed by the multi-disc magnet steel, are equipped with magnet steel groove (3) on rotor section (2), magnet steel groove (3) circumference equipartition is on rotor section (2) lateral wall, and the axis of magnet steel groove (3) is parallel with the axis of rotor section (2), and magnet steel groove (3) on two sections adjacent rotor sections (2) are stagger the setting, stagger the angle for 1-10.

2. The motor noise reduction rotor structure according to claim 1, characterized in that the multi-segment rotor segment (2) is two-segment.

3. The motor noise reduction rotor structure according to claim 1 or 2, characterized in that the rotor section (2) is provided with a magnetic shoe groove (4), and a connecting hole (5) is arranged at a position close to the center of the rotor section (2).

4. A motor noise reduction rotor structure according to claim 3, characterized in that the magnetic shoe grooves (4) and the connecting holes (5) are circumferentially and uniformly distributed on the two rotor sections (2).

5. The motor noise reduction rotor structure according to claim 4, wherein the magnetic shoe grooves (4) and the connecting holes (5) are connected and communicated when two adjacent rotor sections (2) are combined, and the multi-section rotor sections (2) are fixed through the connecting holes (5) by rivets.

6. An electric machine comprising a motor noise reducing rotor structure as defined in any one of claims 1-5.