CN106712354B - Motor rotor, rotating electric machine, and disassembling method - Google Patents
Motor rotor, rotating electric machine, and disassembling method Download PDFInfo
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- CN106712354B CN106712354B CN201710089681.7A CN201710089681A CN106712354B CN 106712354 B CN106712354 B CN 106712354B CN 201710089681 A CN201710089681 A CN 201710089681A CN 106712354 B CN106712354 B CN 106712354B
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- oil hole
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention provides a motor rotor, a rotating motor and a disassembling method, and relates to the technical field of rotating motors. The motor rotor provided by the invention comprises an iron core, a sleeve and a rotating shaft, wherein the sleeve and the rotating shaft are in interference fit, and the sleeve and the iron core are in interference fit. A first oil hole is formed in the end face of the sleeve, a first groove is formed in the inner surface of the sleeve, the first oil hole is communicated with the first groove, a medium is injected into the first oil hole, and the medium is filled between the sleeve and the rotating shaft, so that the inner diameter of the sleeve is increased, and the sleeve is conveniently separated from the rotating shaft. The disassembly is convenient, and the parts are not easy to be damaged. The rotating motor provided by the invention comprises the motor rotor, and the motor part is detached in a time-saving and labor-saving manner. The disassembly method provided by the invention is suitable for disassembling the interference fit piece, is simple to operate and quick to disassemble, does not damage parts, and is low in rejection rate of finished products.
Description
Technical Field
The invention relates to the technical field of rotating motors, in particular to a motor rotor, a rotating motor and a disassembling method.
Background
In actual production, many mechanical parts of rotating structures need to be disassembled, and especially the disassembly of an interference fit is more difficult. For example, in a rotating electrical machine, a rotor core is detached from a rotating shaft.
At present, when the motor rotor needs to be disassembled, the rotor core of the motor is generally heated or the rotating shaft is cooled, and then auxiliary tools such as a copper bar, a hammer head or an oil press are used manually to knock or press the motor rotor out.
When the motor rotor needs to disassemble the bearing part, the three-jaw puller, the pulling support device and other tools are often used to disassemble the bearing, however, when the motor rotor with larger size and specification is encountered, the disassembling work is very difficult to carry out, the labor intensity is higher, and the efficiency of the disassembling work is seriously influenced.
Moreover, in the disassembly process, the rotating shaft, the rotor core, the bearing and other components are extremely easy to be damaged, the positioning precision, the installation size, the matching size and the like of each component are easily changed, the reuse of the components is influenced, the safety performance is poor in the operation process, an operator is easily injured, the rotating shaft or the bearing is easily scrapped by the strong and hard disassembly method, and the use cost of the product is greatly improved.
Therefore, designing a motor rotor convenient to disassemble can rapidly disassemble parts such as a rotating shaft, a rotor core, a bearing and the like, and ensure that the parts are not damaged in the disassembling process, and the installation precision and the reuse of the parts are the technical problems which are urgently needed to be improved at present.
Disclosure of Invention
The invention aims to provide a motor rotor, which is convenient to disassemble because an oil hole and a groove communicated with the oil hole are formed in a sleeve in interference fit, and oil with certain pressure is injected into the oil hole to enlarge the gap between interference fit pieces. And the injected oil can also play a role in lubrication between the interference fit pieces, so that the parts are prevented from being damaged in the disassembly process.
The invention also aims to provide a rotating motor which comprises the motor rotor, can conveniently disassemble parts such as a rotor core, a rotating shaft and the like of the motor rotor, and can ensure that the parts are not damaged in the disassembling process and the reuse of the parts is not influenced.
The invention also aims to provide a disassembly method which is suitable for disassembling an interference fit of a motor rotor structure similar to the motor rotor structure. The disassembly process is simple and convenient to operate, has low requirements on operators, is high in safety, quick and convenient to disassemble, saves time and labor, does not influence the mounting precision of reuse of parts, and is low in rejection rate of finished products.
The technical problem of the invention is solved by adopting the following technical scheme.
The invention provides a motor rotor which comprises an iron core, a sleeve and a rotating shaft, wherein the sleeve comprises an inner surface and an outer surface, the inner surface is sleeved on the rotating shaft, the sleeve is in interference fit with the rotating shaft, the iron core is sleeved on the outer surface, and the sleeve is in interference fit with the iron core.
The end face of the sleeve is provided with a first oil hole, the inner surface of the sleeve is provided with a first groove, the first oil hole is communicated with the first groove, a medium is injected into the first oil hole, and the medium is filled between the sleeve and the rotating shaft, so that the inner diameter of the sleeve is increased, and the sleeve and the rotating shaft are conveniently separated.
Furthermore, a second oil hole is formed in the end face of the sleeve, a second groove is formed in the outer surface of the sleeve, and the second oil hole is communicated with the second groove. And injecting a medium into the second oil hole, wherein the medium is filled between the sleeve and the iron core, so that the outer diameter of the sleeve is reduced, and the sleeve is conveniently separated from the iron core.
Further, the first groove and the second groove are both spiral grooves or annular communication grooves.
Further, the first grooves and the second grooves are distributed in a staggered mode to enhance the strength of the sleeve.
Further, the first oil holes and the second oil holes are symmetrically distributed about the axis of the sleeve.
Furthermore, a third oil hole is formed in an end portion of the iron core, a third groove is formed in the outer surface of the sleeve, an opening of the third groove faces the iron core, and the third groove is communicated with the third oil hole.
Furthermore, a fourth oil hole is formed in the end portion of the iron core, a fourth groove is formed in one surface, close to the sleeve, of the iron core, an opening of the fourth groove faces the sleeve, and the fourth groove is communicated with the fourth oil hole.
Furthermore, a fifth groove is formed in the rotating shaft and communicated with the first oil hole.
The invention provides a rotating motor which comprises a base, a stator and the motor rotor, wherein the stator is arranged on the base, and the stator is sleeved on the motor rotor.
The invention provides a disassembling method for the motor rotor, which is used for the motor rotor, wherein a second oil hole is formed in the end surface of the sleeve, a second groove is formed in the outer surface of the sleeve, and the second oil hole is communicated with the second groove.
And injecting the medium into the first oil hole, wherein the medium is filled between the rotating shaft and the sleeve through the first groove, the inner diameter of the sleeve is increased, and the gap between the sleeve and the rotating shaft is increased.
And separating the sleeve from the rotating shaft.
And injecting the medium into the second oil hole, wherein the medium is filled between the sleeve and the iron core, the outer diameter of the sleeve is reduced, and the gap between the sleeve and the iron core is increased.
And separating the sleeve from the rotating shaft.
The motor rotor, the rotating motor and the disassembling method provided by the invention have the following beneficial effects:
according to the motor rotor provided by the invention, the iron core is in interference fit with the sleeve, the rotor is in interference fit with the sleeve, the oil hole and the groove communicated with the oil hole are formed in the sleeve, and oil with certain pressure is injected into the oil hole to increase the clearance between interference fit pieces, so that the motor rotor is convenient to disassemble. And the injected oil can also play a role in lubrication between the interference fit pieces, so that the parts are prevented from being damaged in the disassembly process.
The rotating motor provided by the invention comprises the motor rotor, can conveniently disassemble parts such as a rotor core, a rotating shaft, a sleeve and the like of the motor rotor, and can ensure that the parts are not damaged in the disassembling process and the reuse and positioning precision of the parts are not influenced.
The disassembly method provided by the invention is suitable for disassembling the interference fit piece of the motor rotor structure. The disassembly process is simple and convenient to operate, fast, efficient, time-saving and labor-saving, the requirement on operators is not high, the safety performance is high, the reuse installation precision of parts is not influenced, the rejection rate of finished products is low, and the cost is saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a rotor of an electric machine according to a first embodiment of the present invention;
fig. 2 is a schematic view of a distribution of first grooves of a rotor of an electric machine according to a first embodiment of the present invention;
fig. 3 is another schematic distribution diagram of the first grooves of the rotor of the motor according to the first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a rotor of an electric machine according to a second embodiment of the present invention.
Icon: 100-a motor rotor; 110-a rotating shaft; 120-a sleeve; 121-first oil hole; 123-a second oil hole; 125-a first groove; 1251-radial slots; 1253-axial grooves; 127-a second groove; 124-third oil hole; 126-a third groove; 130-iron core.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "front", "back", and the like refer to orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally used for placing products of the present invention, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used only for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The terms "first", "second", etc. in the description of the present invention are used for distinguishing between them and not for distinguishing between them.
In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "mounted" are to be construed broadly, e.g., as being fixedly attached, detachably attached, or integrally attached; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
First embodiment
Since the motor rotor 100 has a rotating structure, only half of the structure is shown in the drawings, and the other half is symmetrical to the motor rotor about an axis, which is not shown.
Fig. 1 is a schematic structural diagram of a motor rotor 100 according to a first embodiment of the present invention, please refer to fig. 1. The invention provides a motor rotor 100, which comprises an iron core 130, a sleeve 120 and a rotating shaft 110, wherein the sleeve 120 comprises an inner surface and an outer surface, the rotating shaft 110 is sleeved with the inner surface, the sleeve 120 is in interference fit with the rotating shaft 110, the iron core 130 is sleeved with the outer surface, and the sleeve 120 is in interference fit with the iron core 130.
An end surface of the sleeve 120 is opened with a first oil hole 121 and a second oil hole 123. The inner surface of the sleeve 120 is formed with a first groove 125, the first oil hole 121 is communicated with the first groove 125, and a medium is injected into the first oil hole 121 and is filled between the sleeve 120 and the rotating shaft 110, so that the inner diameter of the sleeve 120 is increased, and the sleeve 120 and the rotating shaft 110 are conveniently separated.
The outer surface of the sleeve 120 is opened with a second groove 127, and the second oil hole 123 is communicated with the second groove 127. A medium is injected into the second oil hole 123, and the medium is filled between the sleeve 120 and the core 130, so that the outer diameter of the sleeve 120 is reduced, and the sleeve 120 and the core 130 are conveniently separated.
Preferably, the first oil hole 121 and the second oil hole 123 are symmetrically distributed about the axis of the sleeve 120.
It should be noted that, in other preferred embodiments, the first oil hole 121 and the second oil hole 123 may also be asymmetrically distributed, so as to satisfy the requirement that the first oil hole 121 is communicated with the first groove 125, or the second oil hole 123 is communicated with the second groove 127, and a medium with a certain pressure is injected into the first oil hole 121 or the second oil hole 123, so as to increase the clearance between the interference fit pieces, which is convenient for disassembly. The medium may be oil or grease with certain pressure, or other substances.
Fig. 2 is a schematic distribution diagram of the first grooves 125 of the motor rotor 100 according to the first embodiment of the present invention, please refer to fig. 2. The first grooves 125 are spiral grooves to spread the sleeve 120, and the distribution pattern of the first grooves 125 on the inner surface of the sleeve 120 is shown in fig. 2. Wherein, the number of spiral turns of the spiral groove can be one turn, two turns, three turns, five turns, etc., and is not limited specifically here.
Fig. 3 is another distribution diagram of the first groove 125 of the motor rotor 100 according to the first embodiment of the present invention, please refer to fig. 3. The first groove 125 is an annular communicating groove to spread the sleeve 120, and a distribution pattern of the first groove 125 on the inner surface of the sleeve 120 is shown in fig. 3. The first groove 125 includes radial grooves 1251 and axial grooves 1253, the radial grooves 1251 are spaced apart in the axial direction of the sleeve 120, the axial grooves 1253 are provided between two adjacent radial grooves 1251 to communicate with the radial grooves 1251, and two adjacent axial grooves 1253 are opened to opposite sides of the sleeve 120, respectively. Preferably, the radial grooves 1251 are arranged in parallel along the axial direction of the sleeve 120. Such a design facilitates filling of the first recess 125 with a pressure medium, facilitating removal of the interference fit.
It will be readily appreciated that the annular contour of the radial slots 1251 is not limited to being perpendicular to the axis of the sleeve 120, and may be inclined at other angles; likewise, the axis of the axial slot 1253 may not be parallel to the axis of the sleeve 120, or may be inclined at other angles. The distribution of the first grooves 125 is not limited to the above-mentioned manner, and it is within the scope of the present embodiment that the pressure medium can fill the first grooves 125, the clearance between the sleeve 120 and the rotating shaft 110 can be increased, and the lubricating effect can be improved.
The first grooves 125 and the second grooves 127 are staggered to enhance the strength of the sleeve 120. The shape of the second groove 127 is similar to that of the first groove 125, and the distribution of the second groove 127 on the outer surface of the sleeve 120 is the same as that of the first groove 125 on the inner surface of the sleeve 120, which is not described herein again.
It should be noted that, if the sleeve 120 and the rotating shaft 110 do not need to be frequently disassembled, the first groove 125 on the inner surface of the sleeve 120 may be omitted; on the contrary, if the sleeve 120 and the core 130 do not need to be frequently disassembled, the second groove 127 of the outer surface of the sleeve 120 may be omitted.
Second embodiment
Fig. 4 is a schematic structural diagram of a motor rotor 100 according to a second embodiment of the present invention, please refer to fig. 4. In the motor rotor 100 provided in this embodiment, the end surface of the sleeve 120 is provided with a first oil hole 121, the inner surface of the sleeve 120 is provided with a first groove 125, and the first groove 125 is communicated with the first oil hole 121; a third oil hole 124 is opened at an end of the iron core 130, a third groove 126 is opened at an outer surface of the sleeve 120, the third groove 126 is opened toward the iron core 130, and the third groove 126 is communicated with the third oil hole 124.
High-pressure oil is injected into the first oil hole 121, and the high-pressure oil is filled between the sleeve 120 and the rotating shaft 110 through the first groove 125, so that the inner diameter of the sleeve 120 is increased, the gap between the sleeve 120 and the rotating shaft 110 is increased, and the rotating shaft 110 and the sleeve 120 are convenient to disassemble. And the high-pressure oil has a lubricating effect, so that the friction resistance is reduced, and the parts are prevented from being damaged in the disassembling process.
High pressure oil is injected into the third oil hole 124, and the high pressure oil is filled between the sleeve 120 and the core 130 through the third groove 126, so that the outer diameter of the sleeve 120 is reduced, the gap between the sleeve 120 and the core 130 is increased, and the core 130 and the sleeve 120 are convenient to disassemble. And the high-pressure oil has a lubricating effect, so that the friction resistance is reduced, and the damage to parts in the disassembly process is avoided.
It should be noted that the third oil hole 124 may be an L-shaped straight hole or a hole with another shape, instead of the oblique hole shown in the drawing, as long as it is satisfied that the third oil hole 124 is communicated with the third groove 126, and the high-pressure oil can flow into the third groove 126 from the third oil hole 124 so as to fill the gap between the sleeve 120 and the iron core 130, so that the gap between the sleeve 120 and the iron core 130 is increased under the pressure, thereby facilitating the separation.
Similarly, in the motor rotor 100 provided in this embodiment, a fourth oil hole (not shown) may be further opened at an end portion of the iron core 130, a fourth groove (not shown) is opened at a surface of the iron core 130 close to the sleeve 120, an opening of the fourth groove faces the sleeve 120, and the fourth groove is communicated with the fourth oil hole. High-pressure oil is injected into the fourth oil hole, and the high-pressure oil is filled between the sleeve 120 and the iron core 130 through the fourth groove, so that the outer diameter of the sleeve 120 is reduced, the gap between the sleeve 120 and the iron core 130 is increased, and the iron core 130 and the sleeve 120 are convenient to disassemble.
Or a fifth groove (not shown) is formed on the rotating shaft 110, the fifth groove replaces the first groove 125 in the first embodiment, and the fifth groove is communicated with the first oil hole 121. High-pressure oil is injected into the first oil hole 121, and the high-pressure oil is filled between the sleeve 120 and the rotating shaft 110 through the fifth groove on the rotating shaft 110, so that the inner diameter of the sleeve 120 is increased, the gap between the sleeve 120 and the rotating shaft 110 is increased, and the rotating shaft 110 and the sleeve 120 are convenient to disassemble.
The third groove 126, the fourth groove and the fifth groove in this embodiment are similar to the first groove 125 in the first embodiment in shape and arrangement, and the contents of the other parts not mentioned in this embodiment are the same as those in the first embodiment, and are not described again here.
The invention also provides a rotating motor which comprises a base, a stator and the motor rotor 100, wherein the stator is arranged on the base, and the stator is sleeved on the motor rotor 100. The rotating motor has the advantages of convenient disassembly, repeated utilization for multiple times after disassembly and low rejection rate of finished products.
Third embodiment
The invention further provides a disassembling method for the motor rotor 100, wherein the sleeve 120 is in interference fit with the rotating shaft 110, and the sleeve 120 is in interference fit with the iron core 130. The end surface of the sleeve 120 is opened with a first oil hole 121 and a second oil hole 123, the inner surface of the sleeve 120 is opened with a first groove 125, and the first oil hole 121 is communicated with the first groove 125. The outer surface of the sleeve 120 is opened with a second groove 127, and the second oil hole 123 is communicated with the second groove 127.
High-pressure oil is injected into the first oil hole 121 by an oil pump or other driving device, the high-pressure oil enters the first groove 125 from the first oil hole 121 and is filled between the inner surface of the sleeve 120 and the rotating shaft 110, under the pressure of the high-pressure oil, the inner diameter of the sleeve 120 is increased, the gap between the inner surface of the sleeve 120 and the rotating shaft 110 is increased, and the sleeve 120 and the rotating shaft 110 are conveniently detached, so that the sleeve 120 and the rotating shaft 110 are separated.
Similarly, high-pressure oil is injected into the second oil hole 123 by an oil pump or other driving device, enters the second groove 127 from the second oil hole 123 and is filled between the outer surface of the sleeve 120 and the iron core 130, under the pressure of the high-pressure oil, the outer diameter of the sleeve 120 is reduced, the gap between the outer surface of the sleeve 120 and the iron core 130 is increased, and the sleeve 120 and the iron core 130 are conveniently detached, so that the sleeve 120 and the iron core 130 are separated.
Moreover, the high-pressure oil is filled between the inner surface of the sleeve 120 and the rotating shaft 110 or between the outer surface of the sleeve 120 and the iron core 130, so that a good lubricating effect can be achieved, the frictional resistance between the sleeve 120 and the rotating shaft 110 (or between the sleeve 120 and the iron core 130) is reduced, the disassembly is convenient, and the parts of the motor rotor 100 can be prevented from being damaged in the disassembly process. In repeated use, the positioning precision and the installation precision of parts can not be influenced. The repeated utilization rate of the components can be improved in occasions such as a rotor test tool needing frequent disassembly, the production and test cost is reduced, and the efficiency is improved.
The disassembly method is time-saving and labor-saving, basically has no damage to the disassembled parts, and can be repeatedly used. The disassembly is quick and efficient, the safety performance is high, the rejection rate of finished products is reduced, and the cost is greatly saved. The dismounting method is not only suitable for dismounting the motor rotor 100, but also suitable for dismounting the motor bearing and the rotating shaft 110, dismounting the sleeve 120 and the bearing inner seat, or dismounting other interference fit pieces, particularly for precision parts which need frequent dismounting and have higher cost, has very wide application range, and has great popularization and application values.
In summary, the motor rotor 100, the rotating electrical machine and the disassembling method provided by the invention have the following beneficial effects:
according to the motor rotor 100 and the rotating motor provided by the invention, the end surface of the sleeve 120 is provided with the oil hole, the surface of the sleeve 120 is provided with the groove, the oil hole is communicated with the groove, and the high-pressure medium is injected into the oil hole, so that the inner diameter of the sleeve 120 is increased or the outer diameter of the sleeve is reduced under the action of high pressure, and the interference fit is conveniently separated. This electric motor rotor 100 dismantles simple structure, to spare part not damaged, can used repeatedly, not high to operating personnel's requirement, labour saving and time saving, security performance are high, reduce operating personnel's intensity of labour.
The disassembling method provided by the invention is suitable for disassembling the interference fit piece, and is particularly suitable for precision parts which need to be disassembled frequently and have higher cost. For example, the motor rotor 100 or the like is removed. Before and after disassembly, the shapes, the matching sizes, the positioning accuracy, the installation accuracy and the like of the rotating shaft 110, the bearing and other parts are basically unchanged, the rotating shaft 110, the bearing and other parts can be repeatedly used, the rejection rate is reduced, and the use cost is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, as it will be apparent to those skilled in the art that various modifications, combinations and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A motor rotor is characterized by comprising an iron core, a sleeve and a rotating shaft, wherein the sleeve comprises an inner surface and an outer surface, the inner surface is sleeved on the rotating shaft and is in interference fit with the rotating shaft, the iron core is sleeved on the outer surface and is in interference fit with the sleeve;
the end face of the sleeve is provided with a first oil hole, the inner surface of the sleeve is provided with a first groove, the first oil hole is communicated with the first groove, a medium is injected into the first oil hole, and the medium is filled between the sleeve and the rotating shaft, so that the inner diameter of the sleeve is increased, and the sleeve is conveniently separated from the rotating shaft.
2. The motor rotor as claimed in claim 1, wherein a second oil hole is formed at an end surface of the sleeve, a second groove is formed at the outer surface of the sleeve, and the second oil hole is communicated with the second groove; and injecting a medium into the second oil hole, wherein the medium is filled between the sleeve and the iron core, so that the outer diameter of the sleeve is reduced, and the sleeve is conveniently separated from the iron core.
3. The electric machine rotor of claim 2, wherein the first groove and the second groove are both helical grooves or annular communication grooves.
4. The electric machine rotor of claim 2, wherein the first grooves and the second grooves are staggered to increase the strength of the sleeve.
5. The electric machine rotor as recited in claim 2, wherein the first oil hole and the second oil hole are symmetrically distributed about an axis of the sleeve.
6. The motor rotor as claimed in claim 1, wherein a third oil hole is opened at an end of the core, a third groove is opened at the outer surface of the sleeve, the third groove is opened toward the core, and the third groove is communicated with the third oil hole.
7. The electric motor rotor as claimed in claim 1, wherein a fourth oil hole is opened at an end of the iron core, a fourth groove is opened at a surface of the iron core adjacent to the sleeve, the fourth groove is opened toward the sleeve, and the fourth groove is communicated with the fourth oil hole.
8. The motor rotor as claimed in claim 1, wherein a fifth groove is defined in the shaft, and the fifth groove is in communication with the first oil hole.
9. A rotating electrical machine comprising a machine base, a stator mounted on the machine base, and the electrical machine rotor of any one of claims 1 to 8, the stator being sleeved on the electrical machine rotor.
10. A disassembling method for the motor rotor as claimed in claim 1, wherein a second oil hole is opened in an end surface of the sleeve, a second groove is opened in the outer surface of the sleeve, and the second oil hole is communicated with the second groove;
injecting the medium into the first oil hole, wherein the medium is filled between the rotating shaft and the sleeve through the first groove, the inner diameter of the sleeve is increased, and the gap between the sleeve and the rotating shaft is increased;
separating the sleeve from the rotating shaft;
injecting the medium into the second oil hole, wherein the medium is filled between the sleeve and the iron core, the outer diameter of the sleeve is reduced, and the gap between the sleeve and the iron core is increased;
and separating the sleeve from the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710089681.7A CN106712354B (en) | 2017-02-20 | 2017-02-20 | Motor rotor, rotating electric machine, and disassembling method |
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| CN201710089681.7A CN106712354B (en) | 2017-02-20 | 2017-02-20 | Motor rotor, rotating electric machine, and disassembling method |
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| CN106712354A CN106712354A (en) | 2017-05-24 |
| CN106712354B true CN106712354B (en) | 2023-03-28 |
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| CN109317699A (en) * | 2018-10-12 | 2019-02-12 | 苏州汇川技术有限公司 | Electric spindle of lathe rotor, method for dismounting and electric spindle of lathe motor |
| CN111049293A (en) * | 2019-12-24 | 2020-04-21 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Large-scale direct current propulsion motor rotor |
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