CN109149844B - Disk motor and rotor fixing structure thereof - Google Patents
Disk motor and rotor fixing structure thereof Download PDFInfo
- Publication number
- CN109149844B CN109149844B CN201811219865.1A CN201811219865A CN109149844B CN 109149844 B CN109149844 B CN 109149844B CN 201811219865 A CN201811219865 A CN 201811219865A CN 109149844 B CN109149844 B CN 109149844B
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- rear bearing
- bearing
- pressing plate
- motor rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000006698 induction Effects 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention provides a disc motor rotor fixing structure, wherein a front shell and a rear shell support a rotating shaft, a rear bearing bracket is arranged on the rear shell to support the rotating shaft, an inner positioning part and an outer positioning part are arranged on the rotating shaft to axially limit an inner ring of a rear bearing, and axial sliding between the rotating shaft and a bearing caused by magnetic traction is avoided. The inner side of the rear shell is provided with a rear bearing outer ring pressing plate, and the outer ring of the rear bearing is pressed into the rear bearing mounting hole by the rear bearing outer ring pressing plate. Through the axial positioning of the rear bearing, the rotating shaft and the rear shell, the rotating shaft caused by magnetic traction is prevented from sliding along the axial direction, the axial displacement of the motor rotor fixedly arranged on the rotating shaft is further ensured, the motor air gap is changed, the contact between the motor rotor and the wire stator is avoided, and the reliability of the axial gap of the disc motor is ensured. The invention also provides a disc motor.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a disk motor and a rotor fixing structure thereof.
Background
The motor air gap is the gap between the stator and the rotor of the motor. The motor air gap of the axial flux disc motor is different from the air gap position of the traditional motor. As shown in fig. 1 and 2, fig. 1 is a schematic diagram of a motor air gap position of a disc motor, and fig. 2 is a schematic diagram of a motor air gap position of a common motor in the prior art.
As can be seen from fig. 1, the rotor 1 ' of the disc motor is located in the axial direction of the housing, the rotor 1 ' rotates along with the rotating shaft, the stator 2 ' is fixed on the housing 3 ', and the air gap 4 ' of the disc motor is located in the axial direction; whereas in the conventional motor of fig. 2 the rotor frame is supported in the axial direction of the housing, whereas its stator is arranged in the radial direction of the housing, the air gap of the conventional motor is in the radial direction of the housing. If the rotor of the disc motor is displaced in the axial direction, the rotor is contacted with the stator to scratch, so that the motor is invalid, and the problem can not be caused when the common motor is displaced in the axial direction. So in order to ensure the reliability of the long-term normal operation of the disc motor. It is important to ensure its axial clearance.
In order to ensure the axial clearance of the disc motor, the traditional solution is to enable the inner diameter of a bearing to be in interference fit with a rotor shaft, the outer side of the bearing is connected with a shell through a bearing pressing plate, and the inner side of the bearing is axially limited by a shaft ring. The axial clearance exists in the design stage of the retainer ring for the shaft, and the axial freedom degree of the rotor cannot be effectively limited. And the strength of the motor cannot meet the application requirement of the disk motor on strong axial magnetic tension.
Therefore, how to ensure the reliability of the axial gap of the disc motor is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a disc motor rotor fixing structure to ensure reliability of an axial gap of a disc motor; the invention also provides a disc motor.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the disc type motor rotor fixing structure comprises a front shell, a rear shell and a rotating shaft supported between the front shell and the rear shell, wherein a rear bearing for supporting the rotating shaft is arranged on the rear shell, and an inner positioning part and an outer positioning part for respectively positioning two ends of an inner ring of the rear bearing are fixedly arranged on the rotating shaft;
and a rear bearing outer ring pressing plate for axially positioning the outer ring of the rear bearing is fixedly arranged on the inner side of the rear shell.
Preferably, in the above disc motor rotor fixing structure, the inner positioning portion is an inner step limiting portion which is opened on an outer end face of the rotating shaft and abuts against an inner side of the rear bearing.
Preferably, in the above disc motor rotor fixing structure, the outer positioning portion includes a rear bearing inner ring pressing plate sleeved on the rotating shaft and propped against the rear bearing inner ring, and a first pressing plate positioning bolt for positioning the rear bearing inner ring pressing plate is fixedly mounted on the rotating shaft.
Preferably, in the above disc motor rotor fixing structure, an outer step limiting portion sleeved with the rear bearing inner ring pressing plate is provided on the rotating shaft, and the first pressing plate positioning bolt is locked on the outer step limiting portion along an axial direction of the rotating shaft.
Preferably, in the disc motor rotor fixing structure, a first press-fit gap is reserved between the rear bearing inner ring pressing plate and the outer step limiting portion, and the rear bearing inner ring pressing plate presses the rear bearing inner ring.
Preferably, in the disc motor rotor fixing structure, the rear bearing outer ring pressing plate is an annular outer ring pressing plate coaxially arranged with the rear bearing, a second press-fit gap for pressing the outer ring of the rear bearing by the rear bearing outer ring pressing plate is reserved between the rear bearing outer ring pressing plate and the inner side wall of the rear casing, and a second pressing plate positioning bolt for locking the rear casing and the rear bearing outer ring pressing plate is arranged on the outer side wall of the rear casing.
Preferably, in the above disc motor rotor fixing structure, the rear bearing is a double row angular contact ball bearing.
Preferably, in the above disc motor rotor fixing structure, a front bearing for supporting the rotating shaft is disposed on the front casing, a shoulder for abutting against an inner ring of the front bearing is disposed on the rotating shaft, and an elastic push plate which surrounds the rotating shaft and pushes the front bearing against the shoulder is disposed in the front casing.
Preferably, in the above disc motor rotor fixing structure, the elastic push plate is a wave washer sleeved on the rotating shaft and respectively propped against the front bearing and the inner side of the front casing.
Preferably, in the above disc motor rotor fixing structure, a front bearing hole for supporting the front bearing is provided in the front housing, and the front bearing is mounted in the front bearing hole in a transition fit manner.
Preferably, in the above disc motor rotor fixing structure, a plurality of locking bolts for locking and fixing the front casing and the rear casing are uniformly distributed in an axial direction; the motor rotor is characterized in that a front line stator is fixedly arranged on the inner ring of the front machine shell, a rear line stator is fixedly arranged on the inner ring of the rear machine shell, and a motor rotor magnetically inducing with the front line stator and the rear line stator is fixedly arranged in the middle of the rotating shaft.
Preferably, in the above disc motor rotor fixing structure, the motor rotor and the rotating shaft are integrally formed.
The utility model provides a disc motor, includes preceding casing and the back casing of axial connection to and the pivot of frame support between the two, preceding casing with the back casing is equipped with magnetic induction complex line stator and motor rotor admittedly in, preceding casing, back casing with be provided with between the pivot and right motor rotor location the disc motor rotor location structure of arbitrary one of the above.
The invention provides a disc type motor rotor fixing structure, which comprises a front shell, a rear shell and a rotating shaft supported between the front shell and the rear shell, wherein a rear bearing for supporting the rotating shaft is arranged on the rear shell; the inner side of the rear shell is fixedly provided with a rear bearing outer ring pressing plate for axially positioning the outer ring of the rear bearing. The disc motor supports the rotating shaft through the front shell and the rear shell frame, the rear bearing frame is arranged on the rear shell to support the rotating shaft, and the inner positioning part and the outer positioning part are arranged on the rotating shaft to axially limit the inner ring of the rear bearing, so that axial sliding generated by magnetic traction between the rotating shaft and the bearing is avoided. The rear shell is correspondingly provided with a rear bearing mounting hole for supporting the rear bearing, the inner side of the rear shell is provided with a rear bearing outer ring pressing plate, and the outer ring of the rear bearing is pressed into the rear bearing mounting hole by the rear bearing outer ring pressing plate. Through setting up in epaxial interior location portion of pivot and outer location portion with bearing and pivot locking as an organic wholely, through back bearing outer lane clamp plate with back bearing location to on the back casing to the axial location of pivot and back casing is realized, the pivot that avoids magnetism to pull to lead to is along axial slip, and then guarantees that the axial displacement of the motor rotor of solid dress in the pivot leads to motor air gap change, avoids the contact of motor rotor and line stator, guarantees disk motor axial gap's reliability.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a motor air gap position for a disc motor;
FIG. 2 is a schematic diagram of the motor air gap position of a conventional motor in the prior art;
fig. 3 is a schematic view of a bearing support structure of an electronic rotor in a disc motor rotor fixing structure provided by the invention;
FIG. 4 is a sectional view of an assembled structure of a rotor securing structure of a disc motor according to the present invention;
FIG. 5 is an enlarged view of a portion of the rear bearing inner race platen mounting structure of FIG. 4;
fig. 6 is an enlarged view of a portion of the rear bearing outer race platen mounting structure of fig. 4.
Detailed Description
The invention discloses a disc type motor rotor fixing structure, which ensures the reliability of an axial gap of a disc type motor; the invention also provides a disc motor.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 3-6, fig. 3 is a schematic view of a bearing support structure of an electronic rotor in a disc-type motor rotor fixing structure provided by the invention; FIG. 4 is a sectional view of an assembled structure of a rotor securing structure of a disc motor according to the present invention; FIG. 5 is an enlarged view of a portion of the rear bearing inner race platen mounting structure of FIG. 4; fig. 6 is an enlarged view of a portion of the rear bearing outer race platen mounting structure of fig. 4.
The invention provides a disc motor rotor fixing structure, which comprises a front shell 9, a rear shell 8 and a rotating shaft 51 supported between the front shell and the rear shell, wherein a rear bearing 1 for supporting the rotating shaft 51 is arranged on the rear shell 8, and an inner positioning part and an outer positioning part 2 for respectively positioning two ends of an inner ring of the rear bearing 1 are fixedly arranged on the rotating shaft 51; the inner side of the rear shell 8 is fixedly provided with a rear bearing outer ring pressing plate 4 for axially positioning the outer ring of the rear bearing 1. The disc motor supports the rotating shaft 51 through the front shell 9 and the rear shell 8, the rear bearing 1 is mounted on the rear shell 8 to support the rotating shaft 51, and the inner positioning part and the outer positioning part 2 are arranged on the rotating shaft 51 to axially limit the inner ring of the rear bearing 1, so that axial sliding generated by magnetic traction between the rotating shaft 51 and the rear bearing 1 is avoided. The rear casing 8 is correspondingly provided with a rear bearing mounting hole for supporting the rear bearing 1, the inner side of the rear casing 8 is provided with a rear bearing outer ring pressing plate 4, and the outer ring of the rear bearing 1 is pressed into the rear bearing mounting hole by the rear bearing outer ring pressing plate 4. The rear bearing 1 and the rotating shaft 51 are locked into a whole through the inner positioning part and the outer positioning part 2 arranged on the rotating shaft 51, the rear bearing 1 is positioned on the rear casing 8 through the rear bearing outer ring pressing plate 4, so that the axial positioning of the rotating shaft 51 and the rear casing 8 is realized, the axial sliding of the rotating shaft 51 caused by magnetic traction along the axial direction is avoided, the change of a motor air gap 13 caused by the axial displacement of the motor rotor 5 fixedly arranged on the rotating shaft 51 is further ensured, the contact between the motor rotor 5 and the wire stator 10 is avoided, and the reliability of the axial gap 13 of the disc type motor is ensured.
In this embodiment, the inner positioning portion is an inner step limiting portion that is disposed on an outer end surface of the rotating shaft 51 and abuts against an inner side of the rear bearing 1.
In this embodiment, the outer positioning portion includes a rear bearing inner ring pressing plate 2 sleeved on the rotating shaft 51 and propped against the inner ring of the rear bearing 1, and the rotating shaft 51 is further fixedly provided with a first pressing plate positioning bolt 3 for positioning the rear bearing inner ring pressing plate 51. The rear bearing 1 is sleeved on the rotating shaft 51, the inner positioning part can be arranged as an inner step limiting part arranged on the rotating shaft 51, and the inner step limiting part of the step shaft structure is propped against the inner ring of the rear bearing 1 to limit the inner side of the axial direction of the inner step limiting part by arranging a step shaft propped against the loading end of the rear bearing 1 on the rotating shaft 51. Of course, the inner positioning part can also be a baffle fixedly arranged on the rotating shaft or a sleeve sleeved on the rotating shaft and used for limiting the inner ring of the rear bearing.
The rotating shaft 51 is installed close to the outer side of the rear bearing 1, sleeved with the rear bearing inner ring pressing plate 2, specifically, after the rear bearing 1 is installed in the rotating shaft 51, continuously sleeved with the annular rear bearing inner ring pressing plate 2, which abuts against the outer side of the inner ring of the rear bearing 1, and limiting of the rear bearing 1 on the rotating shaft 51 is achieved through the inner step limiting part on the inner side of the inner ring of the rear bearing 1 and the rear bearing inner ring pressing plate 2 on the outer side of the inner ring of the rear bearing 1. The rotating shaft 51 is fixedly connected with the first pressing plate positioning bolt 3 at the same time, and after the rear bearing inner ring pressing plate 2 abuts against the rear bearing 1, the rear bearing inner ring pressing plate 2 is limited through the first pressing plate positioning bolt 3, so that the stability of the positioning structure of the rear bearing inner ring pressing plate 2 is realized.
In this embodiment, the rotating shaft 51 is provided with an outer step limiting portion sleeved with the rear bearing inner ring pressing plate 2, and the first pressing plate positioning bolt 3 is locked on the outer step limiting portion along the axial direction of the rotating shaft. When the first platen positioning bolt 3 is locked to the rotating shaft 51, it may be installed in the radial direction of the rotating shaft 51 or in the axial direction of the rotating shaft 51.
In order to facilitate the first pressing plate positioning bolt 3 to provide enough locking force for the rear bearing inner ring pressing plate 2, an outer step limiting part is arranged on the outer side of the inner ring of the rotating shaft 51 after the rear bearing is installed in place, so that step shaft structures are formed on the rotating shaft 51 and are respectively located on two axial sides of the rear bearing 1. The outer step limiting part is provided with a threaded hole axially arranged along the rotating shaft, and the first pressing plate positioning bolt is locked on the outer step limiting part after passing through a through hole on the pressing plate of the inner ring of the rear bearing. Of course, the tail end of the rotating shaft can also be set into a threaded shaft structure, and the rear bearing inner ring is tightly pressed by installing the threaded sleeve or a locking nut matched with the rotating shaft on the rotating shaft.
The pressing plate 2 of the inner ring of the rear bearing can also adopt a pressing ring structure, the rotating shaft and the pressing ring adopt interference fit, and the pressing ring presses the inner ring of the rear bearing.
In this embodiment, a first press-fit gap 21 is reserved between the rear bearing inner ring pressing plate 2 and the outer step limiting portion, where the rear bearing inner ring pressing plate 2 presses the inner ring of the rear bearing 1. After the rear bearing inner ring pressing plate 2 is sleeved on the rotating shaft 51, the press-fit end surface of the rear bearing inner ring pressing plate is propped against the inner ring of the rear bearing 1, the width of the inner ring of the rear bearing 1 supported by the rotating shaft 51 is smaller than that of the rear bearing, so that a first press-fit gap 21 is formed between the outer step limiting part and the rear bearing inner ring pressing plate 2, after the first pressing plate positioning bolt 3 is locked with the outer step limiting part, the rear bearing inner ring pressing plate 2 is pressed to generate a certain press-fit deformation, the press-fit stress of the rear bearing inner ring pressing plate 2 on the rear bearing 1 is provided, the axial displacement between the rotating shaft 51 and the rear bearing 1 is avoided, and the stability of the positioning position of the rear bearing on the rotating shaft is further ensured.
In this case, in a specific embodiment, the rear bearing outer ring pressing plate 4 is an annular outer ring pressing plate coaxially arranged with the rear bearing 1, a second press-fit gap 41 for pressing the outer ring of the rear bearing 1 by the rear bearing outer ring pressing plate 4 is reserved between the rear bearing outer ring pressing plate 4 and the inner side wall of the rear housing 8, and the outer side wall of the rear housing 8 is provided with a second pressing plate positioning bolt 14 for locking the rear housing 8 and the rear bearing outer ring pressing plate 4.
After the support position between the rear bearing 1 and the rotating shaft 51 is positioned, the stability of the position of the rear bearing 1 on the rear housing 8 needs to be ensured. The rear casing 8 is provided with a rear bearing mounting hole for fixedly mounting the rear bearing 1, specifically, the rear casing 8 is provided with a rear bearing seat for supporting the rear bearing 1, the rear bearing outer ring pressing plate 4 is an annular outer ring pressing plate which is synchronously arranged with the rotating shaft 51, after the rear bearing 1 is mounted in the rear casing 8, the rear bearing outer ring pressing plate 4 is fixedly mounted on the rear bearing seat, and the inner ring of the rear bearing outer ring pressing plate 4 is pressed on the outer ring of the rear bearing 1.
Likewise, in order to provide a certain compression stress of the rear bearing outer ring pressing plate 4 on the rear bearing 1, the depth of the rear bearing mounting hole is smaller than the width of the outer ring of the rear bearing 1, so that after the rear bearing outer ring pressing plate 4 abuts against the rear bearing 1, a second press-fit gap 41 is formed between the abutting side of the rear bearing outer ring pressing plate 4 and the inner side wall of the rear casing 8, a threaded hole penetrating through the thickness direction of the rear casing 8 is formed, and the rear bearing outer ring pressing plate 4 is locked by penetrating through the rear casing 1 through the second pressing plate positioning bolt 14. (the attached drawings are for clarity of the mounting structure of the rear bearing outer race platen 4, the mounting structure of the second platen positioning bolts 14 is not shown, and the mounting position is indicated only by the position indication thereof).
The outer ring of the rear bearing 1 is pressed onto the rear casing 8 through the rear bearing outer ring pressing plate 4, the rear bearing 1 is pressed onto the rotating shaft 51 through the rear bearing inner ring pressing plate 4, so that the rigid connection of the rear casing 8, the rear bearing 1 and the rotating shaft 51 is realized, and the problem that the motor air gap 13 and the motor rotor 5 collide due to the magnetic traction between the motor rotor 5 and the wire stator 10 is further avoided.
Preferably, the rear bearing 1 is a double row angular contact ball bearing. The inner ring and the outer ring of the rear bearing 1 are limited by adopting locking structures, in order to avoid axial dislocation of the inner ring and the outer ring of the rear bearing 1 caused by magnetic traction, the rear bearing 1 is a double-row angular contact ball bearing which can bear radial load and axial load acting in two directions, and can limit bidirectional axial displacement of a shaft or a shell, so that the influence on the stability of the working structure of a motor due to the axial direction of the inner ring and the outer ring of the rear bearing is avoided.
In this case, in a specific embodiment, the front casing 9 is provided with a front bearing 6 supporting the rotating shaft 51, the rotating shaft 51 is provided with a shoulder propping against the inner ring of the front bearing 6, and the front casing 9 is internally provided with an elastic push plate 7 which is circumferentially arranged around the rotating shaft 51 and pushes the front bearing 6 against the shoulder. The axial one end of the rotating shaft 51 is supported by the rear bearing 1 arranged on the rear casing 8, the axial other end of the rotating shaft is supported by the front bearing 6, the front bearing 6 is arranged on the front casing 9 in a supporting mode, through the fact that the supporting points of the rotating shaft 51 are respectively arranged on the front casing 9 and the rear casing 8, a certain supporting distance is reserved between the two supporting points of the rotating shaft, and stability of a supporting structure is guaranteed.
Meanwhile, the front bearing 6 is sleeved on the rotating shaft 51, and a shaft shoulder is arranged on the rotating shaft 51 to clamp and limit the front bearing 6. The front shell 9 is provided with a front bearing mounting hole for accommodating the front bearing 6, the inner side of the front bearing mounting hole is provided with an elastic push plate 7 propped against the loading end of the front bearing 6, and the elastic push plate 7 provides a pushing force for compressing the rotating shaft towards the rear shell direction, so that the stability of the supporting structure of the rotating shaft in the front shell and the rear shell is further improved.
Preferably, the elastic push plate 7 is a wave washer sleeved on the rotating shaft and respectively propped against the front bearing and the inner side of the front shell. Of course, the elastic push plate 7 may also be provided as a spring-loaded paddle that provides an axially elastic pushing force to the front bearing 6.
In the embodiment, a plurality of locking bolts 11 for locking and fixing the front casing 9 and the rear casing 8 are uniformly distributed in the axial direction; the inner ring of the front machine shell 9 is fixedly provided with a front line stator, the inner ring of the rear machine shell 8 is fixedly provided with a rear line stator, and the middle part of the rotating shaft 51 is fixedly provided with a motor rotor 5 which is magnetically induced with the front line stator and the rear line stator. The front casing 9 and the rear casing 8 are internally provided with a single-rotor double-stator structure, and the motor rotor is fixedly arranged on the rotating shaft and positioned at the rotation centers of the front casing and the rear casing. The front shell and the rear shell are locked on the outer ring through bolts, so that the structural stability of the motor is ensured. Of course, other motor structures with matched rotors and stators can be arranged in the front casing and the rear casing. The output end of the rotating shaft 51 is also provided with an oil seal 12, so that the sealing performance of the disc type motor is ensured.
In this embodiment, the motor rotor 5 and the shaft 51 are integrally formed. The disc motor with the single-rotor double-stator structure is characterized in that the motor rotor and the rotating shaft are integrally formed, so that the processing difficulty of the rotating shaft is reduced, and the stability of the working structure of the motor is ensured.
Based on the disc type motor rotor positioning structure provided by the embodiment, the invention also provides a disc type motor, which comprises a front casing and a rear casing which are axially connected, and a rotating shaft supported between the front casing and the rear casing, wherein a magnetic induction matched linear stator and a motor rotor are fixedly arranged in the front casing and the rear casing, and the disc type motor rotor positioning structure provided by the embodiment for positioning the motor rotor is arranged between the front casing, the rear casing and the rotating shaft.
Since the disc motor adopts the disc motor rotor positioning structure of the above embodiment, the disc motor has the beneficial effects brought by the disc motor rotor positioning structure.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The disc type motor rotor fixing structure is characterized by comprising a front machine shell, a rear machine shell and a rotating shaft supported between the front machine shell and the rear machine shell, wherein a rear bearing for supporting the rotating shaft is arranged on the rear machine shell, and an inner positioning part and an outer positioning part for respectively positioning two ends of an inner ring of the rear bearing are fixedly arranged on the rotating shaft;
a rear bearing outer ring pressing plate for axially positioning the outer ring of the rear bearing is fixedly arranged on the inner side of the rear shell;
the inner positioning part is an inner step limiting part which is arranged on the outer end surface of the rotating shaft and abuts against the inner side of the rear bearing, the outer positioning part comprises a rear bearing inner ring pressing plate which is sleeved on the rotating shaft and abuts against the rear bearing inner ring, a first pressing plate positioning bolt for positioning the rear bearing inner ring pressing plate is fixedly arranged on the rotating shaft, an outer step limiting part which is sleeved on the rear bearing inner ring pressing plate is arranged on the rotating shaft, the first pressing plate positioning bolt is locked on the outer step limiting part along the axial direction of the rotating shaft, and a first press-fit gap for pressing the rear bearing inner ring pressing plate against the rear bearing inner ring is reserved between the rear bearing inner ring pressing plate and the outer step limiting part;
the second press-fit gap for pressing the outer ring of the rear bearing is reserved between the rear bearing outer ring pressing plate and the inner side wall of the rear casing, and a second pressing plate positioning bolt for locking the rear casing and the rear bearing outer ring pressing plate is arranged on the outer side wall of the rear casing.
2. A disc motor rotor fixing structure according to claim 1, wherein the rear bearing outer ring pressing plate is an annular outer ring pressing plate coaxially arranged with the rear bearing.
3. A disc motor rotor fixing structure according to claim 1, wherein the rear bearing is a double row angular contact ball bearing.
4. The disc motor rotor fixing structure according to claim 1, wherein a front bearing supporting the rotating shaft is provided on the front housing, a shoulder abutting against an inner ring of the front bearing is provided on the rotating shaft, an elastic push plate which is circumferentially arranged around the rotating shaft and pushes the front bearing against the shoulder is provided in the front housing.
5. The disc motor rotor fixing structure of claim 4, wherein the elastic push plate is a wave washer sleeved on the rotating shaft and respectively propped against the front bearing and the inner side of the front casing.
6. The disc motor rotor fixing structure according to claim 4, wherein a front bearing hole for supporting the front bearing is provided in the front housing, and the front bearing is mounted in the front bearing hole in a transition fit.
7. The disc motor rotor fixing structure according to claim 1, wherein a plurality of locking bolts for locking and fixing the front casing and the rear casing are uniformly distributed in an axial direction; the motor rotor is characterized in that a front line stator is fixedly arranged on the inner ring of the front machine shell, a rear line stator is fixedly arranged on the inner ring of the rear machine shell, and a motor rotor magnetically inducing with the front line stator and the rear line stator is fixedly arranged in the middle of the rotating shaft.
8. A disc motor rotor fixing structure according to claim 7, wherein the motor rotor is integrally formed with the rotating shaft.
9. A disc motor comprising a front casing and a rear casing which are axially connected, and a rotating shaft supported between the front casing and the rear casing, wherein a linear stator and a motor rotor which are matched with each other by magnetic induction are fixedly arranged in the front casing and the rear casing, and the disc motor rotor fixing structure for positioning the motor rotor is arranged between the front casing, the rear casing and the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811219865.1A CN109149844B (en) | 2018-10-19 | 2018-10-19 | Disk motor and rotor fixing structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811219865.1A CN109149844B (en) | 2018-10-19 | 2018-10-19 | Disk motor and rotor fixing structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109149844A CN109149844A (en) | 2019-01-04 |
| CN109149844B true CN109149844B (en) | 2024-04-02 |
Family
ID=64808809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811219865.1A Active CN109149844B (en) | 2018-10-19 | 2018-10-19 | Disk motor and rotor fixing structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109149844B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266128A (en) * | 2019-07-12 | 2019-09-20 | 深圳市鑫宝达电机有限公司 | A hollow cup rotor with double preload axial elastic displacement |
| DE102021121910A1 (en) * | 2020-10-07 | 2022-04-07 | Schaeffler Technologies AG & Co. KG | Electrical machine with a bearing for a connecting shaft connected to a rotor |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202651962U (en) * | 2012-06-17 | 2013-01-02 | 徐娜 | Idling motor |
| CN104218721A (en) * | 2013-09-13 | 2014-12-17 | 黄河科技学院 | High-impact-resistant overload motor |
| CN104350670A (en) * | 2012-05-09 | 2015-02-11 | Skf公司 | Device having at least one pancake motor rotor and assembly method |
| CN104779746A (en) * | 2015-05-07 | 2015-07-15 | 常州高尔登科技有限公司 | Disc type motor with gap adjusting device |
| CN204794586U (en) * | 2015-07-14 | 2015-11-18 | 华英汽车集团有限公司 | Air gap adjustable disc type electric machine |
| CN105262303A (en) * | 2015-11-25 | 2016-01-20 | 南京埃斯顿自动控制技术有限公司 | Permanent magnetic synchronous direct drive motor for rail transit |
| CN205693506U (en) * | 2016-06-01 | 2016-11-16 | 杭州纳智电机有限公司 | A kind of servomotor presser device |
| CN106464113A (en) * | 2014-04-23 | 2017-02-22 | 日本精工株式会社 | Direct drive motor, conveyancing device, inspection device, and machine tool |
| CN206506393U (en) * | 2017-01-11 | 2017-09-19 | 浙江上工宝石缝纫科技有限公司 | A kind of integrated motor structure of sewing machine |
| CN206834896U (en) * | 2017-06-20 | 2018-01-02 | 天津创远亿德科技发展有限公司 | A kind of rotating shaft bearing of motor mounting structure and motor |
| CN207939311U (en) * | 2018-02-05 | 2018-10-02 | 长城汽车股份有限公司 | A kind of location structure of bearing plate |
| CN209627119U (en) * | 2018-10-19 | 2019-11-12 | 浙江盘毂动力科技有限公司 | Disc type electric machine and its fixed structure of rotor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI412213B (en) * | 2010-10-12 | 2013-10-11 | Ind Tech Res Inst | Reinforcement structure for thin-plate motor |
| EP2667485B1 (en) * | 2012-05-25 | 2014-11-19 | Compound Disk Drives GmbH | Electric motor and storage assembly |
-
2018
- 2018-10-19 CN CN201811219865.1A patent/CN109149844B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104350670A (en) * | 2012-05-09 | 2015-02-11 | Skf公司 | Device having at least one pancake motor rotor and assembly method |
| CN202651962U (en) * | 2012-06-17 | 2013-01-02 | 徐娜 | Idling motor |
| CN104218721A (en) * | 2013-09-13 | 2014-12-17 | 黄河科技学院 | High-impact-resistant overload motor |
| CN106464113A (en) * | 2014-04-23 | 2017-02-22 | 日本精工株式会社 | Direct drive motor, conveyancing device, inspection device, and machine tool |
| CN104779746A (en) * | 2015-05-07 | 2015-07-15 | 常州高尔登科技有限公司 | Disc type motor with gap adjusting device |
| CN204794586U (en) * | 2015-07-14 | 2015-11-18 | 华英汽车集团有限公司 | Air gap adjustable disc type electric machine |
| CN105262303A (en) * | 2015-11-25 | 2016-01-20 | 南京埃斯顿自动控制技术有限公司 | Permanent magnetic synchronous direct drive motor for rail transit |
| CN205693506U (en) * | 2016-06-01 | 2016-11-16 | 杭州纳智电机有限公司 | A kind of servomotor presser device |
| CN206506393U (en) * | 2017-01-11 | 2017-09-19 | 浙江上工宝石缝纫科技有限公司 | A kind of integrated motor structure of sewing machine |
| CN206834896U (en) * | 2017-06-20 | 2018-01-02 | 天津创远亿德科技发展有限公司 | A kind of rotating shaft bearing of motor mounting structure and motor |
| CN207939311U (en) * | 2018-02-05 | 2018-10-02 | 长城汽车股份有限公司 | A kind of location structure of bearing plate |
| CN209627119U (en) * | 2018-10-19 | 2019-11-12 | 浙江盘毂动力科技有限公司 | Disc type electric machine and its fixed structure of rotor |
Non-Patent Citations (1)
| Title |
|---|
| 盘式永磁同步交流调速电机的设计研究;张艳敏;;微电机;20180728(第07期);第26-29页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109149844A (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206992808U (en) | A kind of rotational structure of laser radar | |
| CN109149844B (en) | Disk motor and rotor fixing structure thereof | |
| CN110143510A (en) | An improved traction machine | |
| CN107055284A (en) | Permanent magnet synchronous traction machine with outer rotor | |
| CN107620714A (en) | Electronic water pump | |
| CN201674313U (en) | Pre-tightening force system on motor rotating shaft and motor applying pre-tightening force system | |
| CN211183720U (en) | Motor rotor with built-in rotary transformer and motor with rotor | |
| CN109546797B (en) | Motor noise reduction structure | |
| CN209627119U (en) | Disc type electric machine and its fixed structure of rotor | |
| CN216751415U (en) | Single-side floating eliminating structure of rotating shaft | |
| CN206908407U (en) | A kind of magnetic gear outer rotor mounting structure | |
| CN209016906U (en) | A double-rotor motor for a fan | |
| CN211377728U (en) | Lightweight permanent magnet motor rotor structure | |
| CN209923552U (en) | Spindle motor mounting structure of water/air jet loom | |
| CN110219138A (en) | A kind of washing machine axle sleeve | |
| CN220440537U (en) | Torque transmission device for torque motor | |
| CN211701804U (en) | Shell supporting type outer rotor electric spindle | |
| CN223402337U (en) | Through shaft hub motor with rotation stopping structure | |
| CN220172988U (en) | A motor resolver installation structure and a permanent magnet motor | |
| WO2021228154A1 (en) | Drum motor | |
| CN211151737U (en) | Waterproof gearless hub motor | |
| CN217240448U (en) | Motor convenient to installation is dismantled | |
| CN210074949U (en) | Motor with detachable bearing fixing seat | |
| CN217486321U (en) | Elevator assembly and disc type motor thereof | |
| CN211266651U (en) | Electric machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 321100 Jiangnan Park 23, Lanxi Economic Development Zone, Jinhua, Zhejiang Applicant after: Zhejiang Panhu Power Technology Co.,Ltd. Address before: 321100 Jiangnan Park 23, Lanxi Economic Development Zone, Jinhua, Zhejiang Applicant before: CORE DRIVE TECHNOLOGY (JINHUA) Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |