CN108448794B - Bearing structure of double-rotor motor - Google Patents
Bearing structure of double-rotor motor Download PDFInfo
- Publication number
- CN108448794B CN108448794B CN201810498868.7A CN201810498868A CN108448794B CN 108448794 B CN108448794 B CN 108448794B CN 201810498868 A CN201810498868 A CN 201810498868A CN 108448794 B CN108448794 B CN 108448794B
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- Prior art keywords
- outer rotor
- rotor
- inner rotor
- end cover
- bearing
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000009191 jumping Effects 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 1
- 238000011900 installation process Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000005461 lubrication Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Rotary Pumps (AREA)
Abstract
The invention relates to a bearing structure of a double-rotor motor, which comprises a frame, wherein an inner rotor is arranged in the frame, the left part of the inner rotor is provided with an outer side end cover through a left inner rotor bearing, the outer end cover is connected with the left vertical plate, and the right part of the inner rotor is connected with the connecting shaft through the right inner rotor bearing; an outer rotor is arranged outside the inner rotor bulge, two ends of the outer rotor are respectively connected with a left outer rotor bearing position and a right outer rotor bearing position, the left outer rotor bearing position is provided with a left outer rotor end cover through a left outer rotor bearing, the left outer rotor end cover is fixed with the middle vertical plate, the right outer rotor bearing position is connected with the connecting shaft, the right outer rotor end cover is installed on the right outer rotor bearing position through the right outer rotor bearing, and the right outer rotor end cover is connected with the right vertical plate. The structure of the inner rotor bearing is convenient for realizing the installation and lubrication of the inner rotor bearing, on the other hand, the maintenance and replacement of the inner rotor bearing can be effectively solved, and the index requirement of the shaft end runout value can be ensured.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a bearing structure of a double-rotor motor.
Background
At present, aiming at a motor with a double-rotor structure such as a hydraulic coupler, a permanent magnet coupling speed regulator and the like, the general structure is as follows: the inner rotor is connected with the outer rotor through two bearings, and during normal operation, the inner rotor rotates around the axis of the inner rotor on one hand, and revolves around the axis of the outer rotor on the other hand, so that the runout value of the shaft end of the inner rotor is related to the coincidence degree of the axes of the inner rotor and the outer rotor.
Firstly, due to the influences of factors such as machining precision, assembly precision and accumulated errors after assembly of the structural member, the shaft end runout value of the inner rotor is larger when the inner rotor rotates, so that the vibration is larger when the device operates, and the service life of the bearing is reduced. Secondly, the double-rotor motor with the structure can be realized only by disassembling the whole motor if two bearings of the inner rotor are to be disassembled and replaced, and certain inconvenience is caused to bearing maintenance. Then, because the fixing mode of the two bearings of the inner rotor is different from that of a conventional motor, the bearings are invisible during installation, and the bearings are easy to damage during the assembly process.
In order to avoid the problem of the run-out of the shaft end of the inner rotor, the prior art adopts methods of high matching precision in design, high precision equipment in production and the like so as to reduce the run-out value of the shaft end of the inner rotor. The method has higher production cost, and the runout value of the shaft end of the inner rotor is still larger due to the existence of accumulated errors. The bearing is maintained, replaced and installed, and belongs to the inherent characteristic of the existing double-rotor structure.
Disclosure of Invention
The applicant provides a bearing structure of a double-rotor motor aiming at the defects in the prior art, which can realize that the runout value of the shaft end of an inner rotor meets the requirements of technical indexes on one hand and can effectively solve the problems of maintenance, replacement and installation of the inner rotor bearing on the other hand.
The technical scheme of the invention is as follows:
the bearing structure of the double-rotor motor comprises a machine base, wherein a middle vertical plate extends on the inner wall surface of the machine base, a left vertical plate and a right vertical plate extend on two end parts of the machine base, an inner rotor is arranged in the machine base, an outer side end cover is arranged on the left part of the inner rotor through a left inner rotor bearing, the outer side end cover is connected with the left vertical plate, and the right part of the inner rotor is connected with a connecting shaft through a right inner rotor bearing; the middle part of inner rotor is provided with the arch, installs the outer rotor at bellied external part, and left side outer rotor bearing position and right side outer rotor bearing position are connected respectively to the both ends of outer rotor, and left side outer rotor bearing position passes through left side outer rotor bearing installation left side outer rotor end cover, and left side outer rotor end cover is fixed with middle riser, and the outer end of right side outer rotor bearing position passes through the fastener and is connected with the connecting axle, simultaneously, right side outer rotor bearing position passes through right side outer rotor bearing installation right side outer rotor end cover, and right side outer rotor end cover is connected with right side riser.
The further technical scheme is as follows:
the left vertical plate is of a circular ring structure, and a plurality of fixing blocks are arranged in the circumferential direction of the left vertical plate.
The outer end cover is in clearance fit with the left vertical plate, and the unilateral clearance value is larger than the inner rotor shaft end jumping value to allow adjustment.
After the double rotors are installed, the inner rotor and the outer rotor are locked, the inner rotor is driven to rotate by rotating the outer rotor, the runout value of the shaft end of the inner rotor is measured by using a wire gauge, and then the radial position of the outer end cover is adjusted by bolts on the fixed block.
After the runout adjustment of the inner rotor shaft end is completed, the machine base and the outer end cover are matched with a drill pin hole, and a positioning pin is installed.
The machine base is of a cuboid structure, the bottom surface of the machine base is a machine base lower bottom plate, and the machine base lower bottom plate is connected with the ground through a fastener.
The beneficial effects of the invention are as follows:
1. according to the structural characteristics of the double rotors, the left inner rotor bearing is moved outwards, the bearing is directly connected with the stand left vertical plate of the stand through the outer end cover, the outer end cover is in clearance fit with the stand left vertical plate, and after assembly, the runout value of the shaft end of the inner rotor is adjusted through the adjustment of the radial position of the outer end cover.
2. The invention designs the shaft end of the outer rotor into a two-section connecting structure, wherein one section is the right side bearing position of the outer rotor, the other section is the connecting shaft, and the right side inner rotor bearing is connected with the connecting shaft.
In addition, the invention has the following advantages:
(1) The left inner rotor bearing moves outwards, so that the structure is simple and reliable; only one bearing is coupled between the inner rotor and the outer rotor, the transmission of vibration between the two is reduced, and the reliability of the equipment is improved;
(2) The outer end cover is in clearance fit with the stand left side vertical plate of the stand, and the fixed block structure welded on the stand left side vertical plate of the stand realizes the adjustment of the runout value of the shaft end of the inner rotor and ensures the index requirement of the runout value.
(3) The left inner rotor bearing moves outwards, so that the maintenance and the service of the bearing are facilitated.
(4) The two-section structure of the end of the outer rotor shaft is convenient for the installation, maintenance and replacement of the inner rotor bearing.
Drawings
FIG. 1 is a schematic view (full cross-sectional view) of the structure of the present invention;
fig. 2 is a schematic view of a left side riser of the present invention.
Wherein: 1. an inner rotor; 2. a left inner rotor bearing; 3. an outer end cap; 4. a left side vertical plate; 5. a base; 6. a left outer rotor end cover; 7. a middle vertical plate; 8. a left outer rotor bearing; 9. the left outer rotor bearing position; 10. an outer rotor; 11. the right outer rotor bearing position; 12. a right side riser; 13. a right outer rotor end cover; 14. a right outer rotor bearing; 15. a right inner rotor bearing; 16. a base lower plate; 17. a connecting shaft; 18. and a fixed block.
Detailed Description
The following describes specific embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the bearing structure of the dual-rotor motor of the embodiment comprises a frame 5, wherein the frame 5 is in a hollow thin-wall structure, a middle vertical plate 7 extends from the inner wall surface of the frame 5, a left vertical plate 4 and a right vertical plate 12 extend from two ends, an inner rotor 1 is installed in the frame 5, an outer end cover 3 is installed on the left part of the inner rotor 1 through a left inner rotor bearing 2, the outer end cover 3 is connected with the left vertical plate 4, and the right end part of the inner rotor 1 is connected with a connecting shaft 17 through a right inner rotor bearing 15; the middle part of inner rotor 1 is provided with the arch, at bellied externally mounted external rotor 10, left side external rotor bearing position 9 and right side external rotor bearing position 11 are connected respectively to the both ends of external rotor 10, left side external rotor bearing position 9 passes through left side external rotor bearing 8 and installs left side external rotor end cover 6, left side external rotor end cover 6 is fixed with middle riser 7, the outer end of right side external rotor bearing position 11 passes through the fastener and is connected with connecting axle 17, simultaneously, right side external rotor bearing position 11 passes through right side external rotor bearing 14 and installs right side external rotor end cover 13, right side external rotor end cover 13 is connected with right side riser 12.
As shown in fig. 2, the left side riser 4 has a circular ring-shaped structure, and a plurality of fixing blocks 18 are installed in the circumferential direction thereof.
The machine base 5 is of a cuboid structure, the bottom surface of the machine base 5 is a machine base lower bottom plate 16, and the machine base lower bottom plate 16 is connected with the ground through a fastener.
The outer end cover 3 is in clearance fit with the left vertical plate 4, and the unilateral clearance value is larger than the inner rotor shaft end runout value by an allowable adjustment amount.
After the double rotors are installed, the inner rotor 1 and the outer rotor 4 are locked, the inner rotor 1 is driven to rotate by rotating the outer rotor 4, the shaft end runout value of the inner rotor 1 is measured by using a wire gauge, and then the radial position of the outer end cover 3 is adjusted by bolts on the fixing blocks 18.
After the shaft end runout adjustment of the inner rotor 1 is completed, the machine base 5 and the outer end cover 3 are matched with drilling pinholes, and positioning pins are installed.
The working principle and working process of the invention are as follows:
for a motor with a double-rotor structure, the rotating part comprises an inner rotor 1 and an outer rotor 10, and is characterized in that one end is connected with driving equipment, and the other end is connected with dragging equipment.
The driving force drives the outer rotor 10 to rotate, thereby driving the inner rotor 1 to rotate and realizing the output of rotation. For the convenience of explanation of the structure of the present invention, the irrelevant parts are omitted in the drawings. The inner rotor 1, the outer rotor 10, the outer side end cover 3, the engine base 5, the connecting shaft 17 and the like are main parts of the invention, and are key structures for realizing the fixation of the left inner rotor bearing 2 and the right inner rotor bearing 15.
The invention comprises the following steps:
the first step: after the inner rotor 1 is assembled with the engine base 5 through the left inner rotor bearing 2, the outer side end cover 3, the right inner rotor bearing 15, the connecting shaft 17, the right outer rotor bearing position 11 and the right outer rotor bearing 14, the outer rotor 10 is assembled with the engine base 5 through the left outer rotor bearing position 9, the left outer rotor bearing 8, the right outer rotor bearing position 11 and the right outer rotor bearing 14, and then the inner rotor 1 and the outer rotor 10 are locked;
and a second step of: rotating the outer rotor 10, while the inner rotor 1 rotates along with the axis of the outer rotor 10;
and a third step of: the run-out value of the inner rotor 1 shaft end (shaft end at the outer end cap 3) was measured by a wire gauge.
Fourth step: the radial position of the outer end cover 3 is adjusted by controlling the length of the bolt extending out of the fixed block 18, the outer rotor 10 is rotated again, the runout value of the shaft end of the inner rotor 1 is measured, and the adjustment is repeatedly performed until the runout value index requirement is met.
Fifth step: after the adjustment is completed, drill is matched between the outer end cover 3 and the output end of the inner rotor 1 and between the outer end cover and the left vertical plate 4, and positioning pins are installed.
Sixth step: through the through holes on the lower bottom plate 16 of the machine base, the scrap iron is cleaned and matched.
The maintenance and replacement of each part of the invention:
the left inner rotor bearing 2 is replaced, and the outer end cover 3 is detached.
The right inner rotor bearing 15 is replaced, and the connecting shaft 17 is detached.
The left outer rotor bearing 8 is replaced, and the outer side end cover 3 and the left outer rotor end cover 6 are detached.
The right outer rotor bearing 14 is replaced, and the connecting shaft 17 and the right outer rotor end cover 13 are detached.
The left inner rotor bearing 2 and the left outer rotor bearing 8 can realize independent lubrication, and are convenient to design and implement oil injection and oil discharge.
The right inner rotor bearing 15 and the right outer rotor bearing 14 can realize the design of a common oil cavity, and the design and implementation of unified oil injection and oil discharge are convenient.
The method can conveniently complete the installation and the disassembly of the bearing of the double-rotor motor, has good working reliability and low cost, and is easy to produce and manufacture.
The above description is intended to illustrate the invention and not to limit it, the scope of which is defined by the claims, and any modifications can be made within the scope of the invention.
Claims (1)
1. A bearing structure of a dual rotor motor, characterized in that: the novel inner rotor type air conditioner comprises a machine base (5), wherein the machine base (5) is of a hollow thin-wall structure, a middle vertical plate (7) is extended on the inner wall surface of the machine base (5), a left vertical plate (4) and a right vertical plate (12) are extended at two ends, an inner rotor (1) is installed in the machine base (5), an outer side end cover (3) is installed on the left part of the inner rotor (1) through a left inner rotor bearing (2), the outer side end cover (3) is connected with the left vertical plate (4), and the right part of the inner rotor (1) is connected with a connecting shaft (17) through a right inner rotor bearing (15); the middle part of the inner rotor (1) is provided with a bulge, an outer rotor (10) is arranged outside the bulge, two ends of the outer rotor (10) are respectively connected with a left outer rotor bearing position (9) and a right outer rotor bearing position (11), the left outer rotor bearing position (9) is provided with a left outer rotor end cover (6) through a left outer rotor bearing (8), the left outer rotor end cover (6) is fixed with a middle vertical plate (7), the outer end of the right outer rotor bearing position (11) is connected with a connecting shaft (17) through a fastener, meanwhile, the right outer rotor bearing position (11) is provided with a right outer rotor end cover (13) through a right outer rotor bearing (14), and the right outer rotor end cover (13) is connected with a right vertical plate (12); the left vertical plate (4) is of a circular ring structure, and a plurality of fixing blocks (18) are arranged in the circumferential direction of the left vertical plate; the machine seat (5) is of a cuboid structure, the bottom surface of the machine seat (5) is a machine seat lower bottom plate (16), and the machine seat lower bottom plate (16) is connected with the ground through a fastener; the outer end cover (3) is in clearance fit with the left vertical plate (4), and the unilateral clearance value is larger than the allowable adjustment amount of the runout value of the shaft end of the inner rotor;
the installation process is as follows:
the first step: after the inner rotor (1) is assembled with the engine base (5) through the left inner rotor bearing (2), the outer side end cover (3), the right inner rotor bearing (15), the connecting shaft (17), the right outer rotor bearing position (11) and the right outer rotor bearing (14), the inner rotor (1) and the outer rotor (10) are locked after the outer rotor (10) is assembled with the engine base (5) through the left outer rotor bearing position (9), the left outer rotor bearing (8), the right outer rotor bearing position (11) and the right outer rotor bearing (14);
and a second step of: rotating the outer rotor (10), wherein the inner rotor (1) rotates along with the axis of the outer rotor (10);
and a third step of: measuring the shaft end jumping value of the inner rotor (1) through a wire meter;
fourth step: the radial position of the outer end cover (3) is adjusted by controlling the length of the bolt extending out of the fixed block (18), the outer rotor (10) is rotated again, the runout value of the shaft end of the inner rotor (1) is measured, and the adjustment is repeatedly performed until the runout value index requirement is met;
fifth step: after the adjustment is completed, drill matching is carried out between the outer end cover (3) and the output end of the inner rotor (1) as well as between the outer end cover and the left vertical plate (4), and positioning pins are installed;
sixth step: through the through hole on the base lower plate (16), the scrap iron is cleaned and drilled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810498868.7A CN108448794B (en) | 2018-05-23 | 2018-05-23 | Bearing structure of double-rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810498868.7A CN108448794B (en) | 2018-05-23 | 2018-05-23 | Bearing structure of double-rotor motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108448794A CN108448794A (en) | 2018-08-24 |
| CN108448794B true CN108448794B (en) | 2024-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810498868.7A Active CN108448794B (en) | 2018-05-23 | 2018-05-23 | Bearing structure of double-rotor motor |
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| Country | Link |
|---|---|
| CN (1) | CN108448794B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201100943Y (en) * | 2007-01-25 | 2008-08-13 | 苏州扬名机电有限公司 | Suspending electric sewer motor |
| CN102522845A (en) * | 2011-12-08 | 2012-06-27 | 西安泰富西玛电机有限公司 | Motor bearing apparatus with sleeve |
| CN102810939A (en) * | 2012-08-13 | 2012-12-05 | 西安盾安电气有限公司 | Speed-self-regulating synchronous generating system |
| CN103051124A (en) * | 2012-12-27 | 2013-04-17 | 上海伊节动力科技有限公司 | Stator-free dual-electric brush dual-rotor outer circle permanent magnet synchronous motor |
| CN206017661U (en) * | 2016-08-31 | 2017-03-15 | 浙江德源机电有限公司 | Embroidery machine bearing block structure |
| CN208285116U (en) * | 2018-05-23 | 2018-12-25 | 中科盛创（青岛）电气股份有限公司 | A kind of bearing arrangement of double-rotor machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3849672B2 (en) * | 2003-06-05 | 2006-11-22 | 日産自動車株式会社 | Bearing lubrication structure of multi-shaft multilayer motor |
-
2018
- 2018-05-23 CN CN201810498868.7A patent/CN108448794B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201100943Y (en) * | 2007-01-25 | 2008-08-13 | 苏州扬名机电有限公司 | Suspending electric sewer motor |
| CN102522845A (en) * | 2011-12-08 | 2012-06-27 | 西安泰富西玛电机有限公司 | Motor bearing apparatus with sleeve |
| CN102810939A (en) * | 2012-08-13 | 2012-12-05 | 西安盾安电气有限公司 | Speed-self-regulating synchronous generating system |
| CN103051124A (en) * | 2012-12-27 | 2013-04-17 | 上海伊节动力科技有限公司 | Stator-free dual-electric brush dual-rotor outer circle permanent magnet synchronous motor |
| CN206017661U (en) * | 2016-08-31 | 2017-03-15 | 浙江德源机电有限公司 | Embroidery machine bearing block structure |
| CN208285116U (en) * | 2018-05-23 | 2018-12-25 | 中科盛创（青岛）电气股份有限公司 | A kind of bearing arrangement of double-rotor machine |
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| Publication number | Publication date |
|---|---|
| CN108448794A (en) | 2018-08-24 |
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Effective date of registration: 20240314 Address after: Building A, Building 201 and 501, Guosheng Industrial Park, No. 101 Junxin Road, Niuhu Community, Guanlan Street, Longhua District, Shenzhen City, Guangdong Province, 518000 Applicant after: Shenzhen hongchengyi Hardware Products Co.,Ltd. Country or region after: China Address before: No. 18 Xinye Road, High tech Industrial Development Zone, Qingdao City, Shandong Province, 266100 Applicant before: SINOPAL (QINGDAO) ELECTRIC CO.,LTD. Country or region before: China |
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