CN219802001U

CN219802001U - Motor rotor

Info

Publication number: CN219802001U
Application number: CN202320615151.2U
Authority: CN
Inventors: 吴敏; 吴小光; 李毅
Original assignee: Nanchang Sanrui Intelligent Technology Co Ltd
Current assignee: Nanchang Sanrui Intelligent Technology Co Ltd
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2023-10-03
Anticipated expiration: 2033-03-27

Abstract

The utility model discloses a motor rotor, which comprises a steel ring assembly, a plurality of long magnet assemblies wound on the peripheral edge of the steel ring assembly and a righting ring sleeved on the outer surfaces of the plurality of long magnet assemblies for fixing, wherein the steel ring assembly comprises a steel ring, compression pieces arranged at two ends of the steel ring, second bolts respectively penetrating through the two compression pieces and second nuts sleeved at two ends of the second bolts and respectively abutted against the compression pieces, the long magnet assemblies comprise an upper magnet and a lower magnet abutted against the bottom of the upper magnet, the long magnet assemblies adopt a sectional design, the long magnet assemblies comprise the upper magnet and the lower magnet, the manufacturing difficulty of the magnets is reduced while the use of the subsequent magnets is not influenced, the structural strength of the broken magnets is superior to that of the long magnets to a certain extent, the magnets are not easy to break when the magnets are broken in the use process, and the service life of the magnets is prolonged.

Description

Motor rotor

Technical Field

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

Background

An electric machine (English: electric machinery, commonly called a "motor") refers to an electromagnetic device that converts or transmits electric energy according to the law of electromagnetic induction. Indicated in the circuit by the letter M (old standard D). Its main function is to generate driving torque as power source for electric appliances or various machines. The generator is indicated in the circuit by the letter G. The main function of the generator is to convert mechanical energy into electric energy, and the most common use is to utilize heat energy, water energy and the like to push the generator rotor to generate electricity.

The motor rotor is also a rotating component in the motor. The motor consists of a rotor and a stator, and is a conversion device for realizing electric energy and mechanical energy and electric energy. The motor rotor is divided into a motor rotor and a generator rotor, and the motor rotor is generally composed of a steel ring, a magnet, a shaft, a magnet ring and a rotor frame, wherein the manufacturing and processing of the magnet and the steel ring are particularly important.

At present, when the length of a motor stator iron core is very long, the lengths of a steel ring and a magnet in a corresponding motor rotor are also increased, the manufacturing difficulty of the long magnet is also increased, and meanwhile, the structure of the long magnet is also fragile, so that an operator needs to repeatedly select an optimal assembly position which is not easy to cause the breakage of the long magnet as an installation point for the subsequent assembly of the long magnet, the assembly time of the long magnet is prolonged to a certain extent, and the long magnet is difficult to assemble.

Disclosure of Invention

Based on the above, the utility model aims to provide a motor rotor, which aims to solve the problem that a long magnet structure on the surface of a motor stator with a longer length is fragile and easy to break in the prior art.

The utility model provides a motor rotor which comprises a steel ring assembly, a plurality of long magnetic assemblies wound on the peripheral edge of the steel ring assembly and a positioning ring sleeved on the outer surfaces of the long magnetic assemblies for fixing;

the steel ring assembly comprises a steel ring, compression pieces arranged at two ends of the steel ring, second bolts penetrating through the two compression pieces respectively, and second nuts sleeved at two ends of the second bolts and abutted against the compression pieces respectively;

the long magnet assembly comprises an upper magnet and a lower magnet which is abutted against the bottom of the upper magnet.

Firstly, the operator can insert four second bolts into four through holes formed on the compressing piece in sequence and penetrate out from one side of the compressing piece, then can sleeve four second nuts at the penetrating end of the second bolt at one side of the compressing piece in sequence to complete connection of one end of the second bolts and one compressing piece, then, the operator can sleeve a steel ring at the other side of the compressing piece which is preliminarily connected, sleeve another compressing piece at the other end of the second bolts and abuts against the other side of the steel ring, then repeat the operation to sleeve four second bolts at the second bolts penetrating out of the other compressing piece in sequence to complete integral installation of the steel ring assembly, then, the operator can select a plurality of long magnetic assemblies matched with the distance between the two compressing pieces at present according to the distance between the two compressing pieces and sequentially encircle the plurality of long magnetic assemblies along the edge of the steel ring, the utility model discloses a motor stator core length is fixed, can be with down magnet in the steel ring bottom beginning enclose the installation with the steel ring assembly erectting, later according to magnet mounted position with magnet laminating down magnet top installation down, last magnet and magnet support the department cover down and establish the righting ring and carry out final righting fastening down, wherein, adopt the design of long magnet assembly segmentation, with long magnet total composition for magnet and magnet down, reduce the magnet manufacturing degree of difficulty when not influencing follow-up magnet and use, and the structural strength of broken magnet is superior to the structural strength of long magnet to a certain extent, the fracture condition also is difficult for appearing in the use breaking magnet, improve the life of magnet itself, the length of steel ring and magnet also increases in the motor rotor that corresponds thereupon when motor stator core length is very long at present, and the long magnet structure of motor stator surface is more fragile easily cracked problem.

In addition, the motor rotor provided by the utility model can also have the following additional technical characteristics:

furthermore, a plurality of righting grooves matched with the long magnetic assembly are formed in the contact part of the inside of the righting ring and the long magnetic assembly.

Furthermore, the righting ring is sleeved at the mutual abutting part of the upper magnet and the lower magnet.

Further, the righting ring comprises a first righting piece, a second righting piece and a fourth righting piece which are respectively arranged on two sides of the first righting piece, and a third righting piece which is arranged opposite to the first righting piece and two ends of which are respectively abutted to the second righting piece and the fourth righting piece.

Further, the first positioning piece, the second positioning piece, the third positioning piece and the fourth positioning piece enclose to form a positioning ring with a circular ring shape.

Further, the contact parts among the first righting piece, the second righting piece, the third righting piece and the fourth righting piece extend outwards to form a connecting wall.

Further, a first bolt penetrates through the two connecting walls, and a first nut is sleeved on the penetrating side of the first bolt.

Further, the diameter of the pressing piece is larger than that of the steel ring, and more than the diameter of the steel ring is used for accommodating the long magnetic assembly and limiting two ends of the long magnetic assembly.

Drawings

FIG. 1 is a schematic view of a frame assembly and a motor rotor according to an embodiment of the present utility model;

fig. 2 is a schematic top view of a motor rotor according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a motor rotor A-A according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of a motor rotor B-B according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a positive ring in a motor rotor according to an embodiment of the present utility model.

Main structural symbol description:

first bolt	1	Long magnet assembly	4
				First nut	2	Upper magnet	41
Positive position ring	3	Lower magnet	42
				First positive part	31	Compacting piece	5
Second positive part	32	Second nut	6
				Third positive part	33	Second bolt	7
Fourth positive directionPart	34	Steel ring	8

The utility model will be further described in the following detailed description in conjunction with the above-described figures.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 5, a motor rotor according to an embodiment of the present utility model includes a steel ring assembly, a plurality of long magnet assemblies 4 wound around a periphery of the steel ring assembly, and a positioning ring 3 sleeved on an outer surface of the plurality of long magnet assemblies 4 for fixing, where the steel ring assembly includes a steel ring 8, compression members 5 disposed at two ends of the steel ring 8, second bolts 7 respectively penetrating through the two compression members 5, and second nuts 6 sleeved at two ends of the second bolts 7 and respectively abutting against the compression members 5, and the long magnet assemblies 4 include an upper magnet 41 and a lower magnet 42 abutting against a bottom of the upper magnet 41.

Further, the contact part between the inner side of the righting ring 3 and the long magnetic assembly 4 is provided with a plurality of righting grooves matched with the long magnetic assembly 4, the righting ring 3 is sleeved on the mutual abutting part of the upper magnet 41 and the lower magnet 42, the righting ring 3 comprises a first righting piece 31, a second righting piece 32 and a fourth righting piece 34 which are respectively arranged on two sides of the first righting piece 31, and a third righting piece 33 which is opposite to the first righting piece 31 and the two ends of which are respectively abutted to the second righting piece 32 and the fourth righting piece 34, the first righting piece 31, the second righting piece 32, the third righting piece 33 and the fourth righting piece 34 are surrounded to form the righting ring 3 with the shape of a circular ring, the contact parts among the first righting piece 31, the second righting piece 32, the third righting piece 33 and the fourth righting piece 34 extend outwards to form connecting walls, a first bolt 1 is penetrated between the two connecting walls, a first nut 2 is sleeved on one side of the first bolt 1, the diameter of the steel ring 5 is larger than the diameter of the second righting piece 8, and the diameter of the steel ring 5 is larger than the diameter of the second righting piece 8 and the long magnetic assembly 4 is used for holding the long magnetic assembly 4.

In the specific implementation, firstly, an operator can sequentially insert four second bolts 7 into four through holes formed in the compression piece 5 and pass through the compression piece 5 from one side, then can sequentially sleeve four second nuts 6 at the passing-out end of the second bolts 7 at one side of the compression piece 5 to complete connection of one end of the second bolts 7 with one compression piece 5, then, the operator can sleeve the steel ring 8 at the other side of the initially connected compression piece 5, in some alternative embodiments of the utility model, in order to ensure the stability of sleeve of the steel ring 8 on the compression piece 5, a circular ring groove matched with the outer diameter of the steel ring 8 can be formed at the contact part of the compression piece 5 and the steel ring 8, the installation accuracy is improved while the connection part of the steel ring 8 and the compression piece 5 is ensured to be stable, then, the operator can sleeve the other compression piece 5 at the other end of the second bolts 7 and abut against the other side of the steel ring 8, and then repeatedly sleeve four second bolts 7 at the second bolts 7 passing through the other compression piece 5 part to complete the integral installation of the steel ring assembly.

Further, for the operation of installing the long magnetic assembly 4 on the surface of the steel ring assembly, firstly, an operator can select a plurality of long magnetic assemblies 4 which are matched with the space between two pressing pieces 5 after the current installation according to the space between the two pressing pieces 5, and sequentially enclose the long magnetic assemblies 4 along the edge of the steel ring 8, specifically, the operator can firstly erect the steel ring assembly on the surface of an installation table, then sequentially enclose the plurality of lower magnets 42 along the edge of the steel ring 8, in order to ensure equidistant between each lower magnet 42 in the enclosing process, in some optional embodiments, a plurality of accommodating grooves which are correspondingly arranged on the diameter parts of the pressing pieces 5 and are matched with the end faces of the lower magnets 42 can be arranged on the diameter parts of the pressing pieces 5, so that the lower magnets 42 are partially embedded in the accommodating grooves, the installation efficiency of the operator is also improved while the space between each lower magnet 42 is ensured to be equal, then, after the lower magnets 42 are enclosed on the bottom of the steel ring assembly, the operator can correspondingly enclose the upper magnets 41 and the top ends of the lower magnets 42 according to the distribution positions of each lower magnet 42, simultaneously, the other side of the upper magnets 41 and the top of the lower magnets 42 are easily abut against the top of the lower magnets, and simultaneously the upper magnets 42 are easily inserted into the corresponding to the upper magnets, the upper magnets 4, the strength of the upper magnets is also improved, the length of the whole magnet is reduced, the length of the magnet assembly is improved, the length of the magnet assembly is compared with the length of the magnet assembly, and the length of the magnet assembly is 4, and the length of the magnet is reduced, and the length of the magnet assembly is 4, and the length is improved, and the length of the magnet assembly is compared with the magnet assembly and the length of the magnet assembly and the magnet assembly. Specifically, the operator can split the righting ring 3 into the first righting part 31, the second righting part 32, the third righting part 33 and the fourth righting part 34, then the first righting part 31 is firstly placed between the upper magnet 41 and the lower magnet 42, and the righting grooves formed in the inner side of the first righting part 31 can be respectively attached to the upper magnet 41 and the lower magnet 42 to wrap the righting ring so as to achieve the purpose of righting, the distance between each upper magnet 41 and each lower magnet 42 is further ensured to be the same, the structure is stable, then the operator can use the first righting part 31 as a reference and sequentially mount the second righting part 32, the third righting part 33 and the fourth righting part 34 in a encircling manner, and the adjacent righting parts can be fixed through the first bolt 1 and the first nut 2, so that the whole installation of the motor rotor is completed, before the installation mode is simple and quick, the operator needs to install the upper magnet 41 and the lower magnet 42 on the steel ring 8 in a closing manner, the other end of the steel ring 8 needs to be tightly mounted on the magnet 5, and the other end of the magnet 5 is not tightly pressed tightly mounted on the other end of the magnet 5, and the other end of the magnet is not tightly pressed tightly mounted on the magnet 5. Then brushing a small amount of special glue between the lower half steel ring 8 and the upper half steel ring 8, surrounding and fixing the joint of the upper magnet 41 and the lower magnet 42 through the righting groove formed in the inner side of the righting ring 3, specifically, attaching the lower magnet 42 to the outer surface of the lower half of the steel ring 8, attaching the upper magnet to the outer surface of the upper half of the steel ring 8, wherein the righting ring 3 is used for ensuring sufficient contact between the upper magnet 41 and the lower magnet 42 and the outer surface of the steel ring 8, and in addition, as repulsive force with like polarity is present at the abutting part of the upper magnet 41 and the lower magnet 42, after preliminary installation of the upper magnet 41 and the lower magnet 42 is completed, the repulsive force between the upper magnet 41 and the lower magnet 42 can be overcome by fastening the pre-fastened compressing piece 5.

In summary, firstly, an operator can insert four second bolts 7 into four through holes formed in the compressing piece 5 in sequence and penetrate out from one side of the compressing piece 5, then can sleeve four second nuts 6 at the penetrating end of the second bolts 7 at one side of the compressing piece 5 in sequence to complete connection of one end of the second bolts 7 and one compressing piece 5, then, the operator can sleeve a steel ring 8 at the other side of the initially connected compressing piece 5, sleeve the other compressing piece 5 at the other end of the second bolts 7 and abuts against the other side of the steel ring 8, then repeat the above operation to sleeve four second bolts 7 at the second bolts 7 penetrating out of the other compressing piece 5 in sequence to complete integral installation of the steel ring assembly, then, the operator can select a plurality of long magnetic assemblies 4 matched with the distance between the two compressing pieces 5 according to the distance between the currently installed compressing pieces 5 and sequentially encircle the plurality of long magnetic assemblies 4 along the edge of the steel ring 8, when in installation, the steel ring assembly can be vertically arranged at the bottom of the steel ring 8 in a surrounding manner, then the upper magnet 41 is attached to the top of the lower magnet 42 according to the installation position of the lower magnet 42, finally the upper magnet 41 and the lower magnet 42 are sleeved with the righting ring 3 for final righting fastening, wherein the long magnet assembly 4 is divided into the upper magnet 41 and the lower magnet 42 by adopting the sectional design of the long magnet assembly 4, the manufacturing difficulty of the subsequent magnet is not influenced, the structural strength of the broken magnet is reduced to a certain extent, the structural strength of the broken magnet is better than that of the long magnet, the broken magnet is not easy to appear in the use process, the service life of the magnet is prolonged, the problem that the lengths of the steel ring and the magnet in the corresponding motor rotor are also increased when the length of the motor stator iron core is long at present is solved, and the surface of the motor stator with longer length is fragile and easy to break.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The motor rotor is characterized by comprising a steel ring assembly, a plurality of long magnetic assemblies wound on the peripheral edge of the steel ring assembly and a positioning ring sleeved on the outer surfaces of the plurality of long magnetic assemblies for fixing;

2. The motor rotor of claim 1, wherein a plurality of alignment slots are formed in the contact portion between the inner side of the alignment ring and the long magnet assembly, and the alignment slots are adapted to the long magnet assembly.

3. The motor rotor of claim 1, wherein the positive ring is sleeved at a position where the upper magnet and the lower magnet abut against each other.

4. The motor rotor according to claim 1, wherein the positioning ring includes a first positioning member, a second positioning member and a fourth positioning member which are respectively provided on both sides of the first positioning member, and a third positioning member which is provided opposite to the first positioning member and whose both ends are respectively abutted against the second positioning member and the fourth positioning member.

5. The motor rotor of claim 4, wherein the first, second, third, and fourth positive members enclose a positive ring having an annular shape.

6. The motor rotor of claim 5, wherein contact points between the first positive member, the second positive member, the third positive member, and the fourth positive member each extend outwardly from the connecting wall.

7. The motor rotor of claim 6, wherein a first bolt is inserted between the two connecting walls, and a first nut is sleeved on the side where the first bolt penetrates.

8. The motor rotor of claim 1, wherein the diameter of the pressing member is larger than the diameter of the steel ring, and the pressing member is provided with more than the diameter of the steel ring for accommodating the long magnet assembly and limiting both ends of the long magnet assembly.