CN105305698A - Axial positioning structure of motor main shaft - Google Patents
Axial positioning structure of motor main shaft Download PDFInfo
- Publication number
- CN105305698A CN105305698A CN201510842916.6A CN201510842916A CN105305698A CN 105305698 A CN105305698 A CN 105305698A CN 201510842916 A CN201510842916 A CN 201510842916A CN 105305698 A CN105305698 A CN 105305698A
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- China
- Prior art keywords
- bearing
- main shaft
- rear bearing
- section
- positioning structure
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- Pending
Links
- 238000012856 packing Methods 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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- Motor Or Generator Frames (AREA)
Abstract
The invention discloses an axial positioning structure of a motor main shaft. The axial positioning structure comprises a front end cover, a rear end cover, and a main shaft, the main shaft comprises a front bearing section, an iron core section, a rear bearing section, and a thread section, the diameter of the iron core section is greater than the diameters of the front bearing section and the rear bearing section, the front bearing section is provided with a front bearing, the rear bearing section is provided with a rear bearing, the iron core section is provided with a bearing cover, the bearing cover is abutted against an outer ring of the rear bearing, the thread section is provided with a gasket, the gasket is abutted against an inner ring of the rear bearing, the thread section is also provided with a but used for locking the gasket, a front bearing chamber is arranged in the front end cover, a wave spring is arranged in the front bearing chamber, the rear end cover is provided with a rear bearing chamber and a first groove, and the dimension of the external diameter of the first groove is smaller than the dimension of the external diameter of the rear bearing chamber. The beneficial effects of the scheme are that in the work process of the main shaft, the main shaft is extended due to heating, and the front bearing axially moves with the main shaft and compresses the wave spring so that the phenomenon of bearing stuck caused by the extension of the main shaft due to heating is prevented.
Description
Technical field
The present invention relates to motor location structure, be specially a kind of axial positioning structure of electric machine main shaft.
Background technology
For ensureing that the part on electric machine main shaft has the service position determined, make the relative frame axial location of main shaft simultaneously, prevent the play of main shaft, the axial location of main shaft is generally realized by the axial location of bearing, common bearing shaft is the version that two ends are fixed to locate mode, this frame mode bearing inner race is fastened on main shaft by interference fit, outer ring bearing cap blocks, bearings at both ends stops the unidirectional play of main shaft respectively, in this kind of structure, when main shaft is in the course of the work by thermal stretching, because bearings at both ends is all fixed, so time will cause the stuck of bearing, and then cause whole motor to work.
Summary of the invention
The invention is intended to the axial positioning structure that a kind of electric machine main shaft is provided, to solve the stuck problem of the bearing that causes by thermal stretching in the main shaft course of work.
The axial positioning structure of the electric machine main shaft in this programme, comprise front end housing, rear end cap and main shaft, main shaft comprises fore bearing section, core packet, rear bearing section and thread segment, core packet diameter is greater than fore bearing section and rear bearing section diameter, fore bearing section place is provided with fore bearing, rear bearing section place is provided with rear bearing, core packet is provided with bearing cap, the outer ring of bearing cap and rear bearing offsets, thread segment is provided with packing ring, the inner ring of packing ring and rear bearing offsets, thread segment place is also provided with the nut for lock washer, fore bearing room is provided with in front end housing, fore bearing indoor are provided with wavy spring, rear end cap is provided with rear bearing room and the first groove, first groove outside dimension is less than rear bearing room outside dimension.
Principle and the effect of this programme are: what this programme adopted is that rear bearing is fixed, the mounting means that fore bearing floats carries out the axial location of main shaft, wherein two-way location is carried out by bearing cap and the first groove in rear bearing outer ring, rear bearing inner ring carries out two-way location by core packet and packing ring, the two-way location of rear bearing Internal and external cycle can be used for bearing bidirectional axial force, there is wavy spring at fore bearing indoor location simultaneously, wavy spring is can by the flexible member compressed, therefore when causing owing to being heated in the main shaft course of work extending, fore bearing is with main shaft radial movement compresses wavy spring, thus avoid the stuck phenomenon of the bearing that causes by thermal stretching due to main shaft.
Further, in order to prevent external fluid from entering motor, having influence on the normal work of motor, front end housing offering the groove preventing external fluid from entering motor.
Further, in order to ensure the reliability of rear bearing inner ring axial restraint, the width of rear bearing section is less than the width of rear bearing.
Further, the conveniently location of front end housing and rear end cap and casing, front end housing and rear end cap all offer the male half coupling coordinated with exterior case.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Embodiment
Below by embodiment, the present invention is further detailed explanation:
Reference numeral in Figure of description comprises: main shaft 1, front end housing 2, rear end cap 3, fore bearing 4, rear bearing 5, wavy spring 6, bearing cap 7, packing ring 8, nut 9.
Embodiment is substantially as shown in Figure 1: the axial positioning structure of electric machine main shaft, comprise main shaft 1, main shaft 1 is from left to right divided into shaft extension section successively, wavy spring section, fore bearing section, core packet, rear bearing section and thread segment, wherein shaft extension section stretches out front end housing 2 for being connected with external motive device, fore bearing section is provided with fore bearing 4, the inner circle of fore bearing 4 and the cylindrical interference fit of fore bearing section, rear bearing section place is provided with rear bearing 5, the inner circle of rear bearing 5 and the cylindrical interference fit of rear bearing section, the excircle dimension of main shaft 1 core packet is greater than the excircle dimension of fore bearing section and rear bearing section, can be used for the location when axis of fore bearing 4 and rear bearing 5 is installed, the width of main shaft 1 rear bearing section is less than the width of rear bearing 5 simultaneously, at main shaft 1 thread segment place, packing ring 8 and nut 9 are installed, under main shaft 1 core packet and the packing ring 8 at thread segment place and the effect of nut 9, realize the two-way location of rear bearing 5 inner ring.
Front end housing 2 is provided with in the left side of main shaft 1, fore bearing room is had on the right side of front end housing 2, through hole is offered on the left of bearing chamber, via hole profile size is less than bearing chamber overall dimension, can be used for carrying out axial limiting to bearing, the cylindrical of fore bearing 4 and fore bearing room matched in clearance, the left side being positioned at fore bearing 4 in fore bearing room is provided with wavy spring 6, wavy spring 6 inner circle is enclosed within the wavy spring section of main shaft 1, the groove of some is also offered at front end housing 2 and the through hole of the shaft extension section cooperation place of main shaft 1, this groove forms mechanical labyrinth sealing, the normal work that can be used for preventing external fluid from entering motor internal affects motor.
Rear end cap 3 is provided with on the right side of main shaft 1, rear bearing room is had on the left of rear end cap 3, rear bearing 5 cylindrical and rear bearing room matched in clearance, rear bearing room right side opening is provided with the first groove, first groove topography size is less than rear bearing room overall dimension, bearing cap 7 is also provided with at main shaft 1 core packet, bearing cap 7 right side opening is provided with male half coupling, male half coupling outside dimension is identical with rear bearing 5 excircle dimension, male half coupling internal diameter size is greater than rear bearing 5 outer ring internal diameter size, under the acting in conjunction of the first groove and bearing cap 7 male half coupling, the outer ring of rear bearing 5 is by twin fixed guide-vane.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection range that this application claims should be as the criterion with the content of its claim, and the embodiment in specification etc. record the content that may be used for explaining claim.
Claims (4)
1. the axial positioning structure of an electric machine main shaft, it is characterized in that, comprise front end housing, rear end cap and main shaft, described main shaft comprises fore bearing section, core packet, rear bearing section and thread segment, described core packet diameter is greater than described fore bearing section and described rear bearing section diameter, described fore bearing section place is provided with fore bearing, described rear bearing section place is provided with rear bearing, described core packet is provided with bearing cap, the outer ring of described bearing cap and described rear bearing offsets, described thread segment is provided with packing ring, the inner ring of described packing ring and described rear bearing offsets, described thread segment place is also provided with the nut for locking described packing ring, fore bearing room is provided with in described front end housing, described fore bearing indoor are provided with wavy spring, described rear end cap is provided with rear bearing room and the first groove, described first groove outside dimension is less than described rear bearing room outside dimension.
2. the axial positioning structure of electric machine main shaft according to claim 1, is characterized in that: described front end housing offers the groove preventing external fluid from entering motor.
3. the axial positioning structure of electric machine main shaft according to claim 1, is characterized in that: the width of described rear bearing section is less than the width of described rear bearing.
4. the axial positioning structure of electric machine main shaft according to claim 2, is characterized in that: described front end housing and described rear end cap all offer the male half coupling coordinated with exterior case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510842916.6A CN105305698A (en) | 2015-11-29 | 2015-11-29 | Axial positioning structure of motor main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510842916.6A CN105305698A (en) | 2015-11-29 | 2015-11-29 | Axial positioning structure of motor main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105305698A true CN105305698A (en) | 2016-02-03 |
Family
ID=55202594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510842916.6A Pending CN105305698A (en) | 2015-11-29 | 2015-11-29 | Axial positioning structure of motor main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105305698A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067065A (en) * | 2018-08-21 | 2018-12-21 | 广州市昊志机电股份有限公司 | A kind of horizontal main axis rear end waterproof construction |
| CN111082594A (en) * | 2019-12-31 | 2020-04-28 | 中国科学院空间应用工程与技术中心 | Space linear motion mechanism and on-orbit inspection device |
| CN113125957A (en) * | 2021-04-28 | 2021-07-16 | 河北工业大学 | Testing arrangement of frameless motor |
| CN114381855A (en) * | 2021-12-22 | 2022-04-22 | 常德纺织机械有限公司 | Axial positioning structure for swing shaft of warp knitting machine |
| CN114688541A (en) * | 2022-04-28 | 2022-07-01 | 江西仙廷精藏设备有限公司 | Anti-shaft locking device of cremation exhaust gas purification system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5100217A (en) * | 1990-02-21 | 1992-03-31 | Georg Fischer Ag | Wheel bearing |
| JPH06200950A (en) * | 1993-01-08 | 1994-07-19 | Fuji Electric Co Ltd | Bearing device of rotating machine |
| CN2759037Y (en) * | 2004-12-10 | 2006-02-15 | 刘学勇 | Improved motor |
| CN202014154U (en) * | 2011-02-28 | 2011-10-19 | 上海电机系统节能工程技术研究中心有限公司 | Bearing fixing structure for three-phase asynchronous motor |
| CN202260780U (en) * | 2011-09-26 | 2012-05-30 | 福建省永达盛电机有限公司 | Anti-axial-displacement motor for high-efficiency constant-current fire-fighting water pump |
| KR20130136737A (en) * | 2012-06-05 | 2013-12-13 | 현대자동차주식회사 | Driven motor for electric vehicle |
| CN204103641U (en) * | 2014-09-18 | 2015-01-14 | 北京大豪科技股份有限公司 | Stepping motor |
| CN104659949A (en) * | 2013-11-22 | 2015-05-27 | 江苏远东电机制造有限公司 | High-temperature horizontal motor bearing support structure |
| CN205283305U (en) * | 2015-11-29 | 2016-06-01 | 重庆元创汽车整线集成有限公司 | Motor spindle's axial positioning structure |
-
2015
- 2015-11-29 CN CN201510842916.6A patent/CN105305698A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5100217A (en) * | 1990-02-21 | 1992-03-31 | Georg Fischer Ag | Wheel bearing |
| JPH06200950A (en) * | 1993-01-08 | 1994-07-19 | Fuji Electric Co Ltd | Bearing device of rotating machine |
| CN2759037Y (en) * | 2004-12-10 | 2006-02-15 | 刘学勇 | Improved motor |
| CN202014154U (en) * | 2011-02-28 | 2011-10-19 | 上海电机系统节能工程技术研究中心有限公司 | Bearing fixing structure for three-phase asynchronous motor |
| CN202260780U (en) * | 2011-09-26 | 2012-05-30 | 福建省永达盛电机有限公司 | Anti-axial-displacement motor for high-efficiency constant-current fire-fighting water pump |
| KR20130136737A (en) * | 2012-06-05 | 2013-12-13 | 현대자동차주식회사 | Driven motor for electric vehicle |
| CN104659949A (en) * | 2013-11-22 | 2015-05-27 | 江苏远东电机制造有限公司 | High-temperature horizontal motor bearing support structure |
| CN204103641U (en) * | 2014-09-18 | 2015-01-14 | 北京大豪科技股份有限公司 | Stepping motor |
| CN205283305U (en) * | 2015-11-29 | 2016-06-01 | 重庆元创汽车整线集成有限公司 | Motor spindle's axial positioning structure |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067065A (en) * | 2018-08-21 | 2018-12-21 | 广州市昊志机电股份有限公司 | A kind of horizontal main axis rear end waterproof construction |
| CN111082594A (en) * | 2019-12-31 | 2020-04-28 | 中国科学院空间应用工程与技术中心 | Space linear motion mechanism and on-orbit inspection device |
| CN111082594B (en) * | 2019-12-31 | 2021-07-27 | 中国科学院空间应用工程与技术中心 | A space linear motion mechanism and on-orbit inspection device |
| CN113125957A (en) * | 2021-04-28 | 2021-07-16 | 河北工业大学 | Testing arrangement of frameless motor |
| CN114381855A (en) * | 2021-12-22 | 2022-04-22 | 常德纺织机械有限公司 | Axial positioning structure for swing shaft of warp knitting machine |
| CN114381855B (en) * | 2021-12-22 | 2024-04-19 | 常德纺织机械有限公司 | Axial positioning structure for swing shaft of warp knitting machine |
| CN114688541A (en) * | 2022-04-28 | 2022-07-01 | 江西仙廷精藏设备有限公司 | Anti-shaft locking device of cremation exhaust gas purification system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160203 |
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| RJ01 | Rejection of invention patent application after publication |