CN105356650A - Gap compensation structure for heating of motor main shaft - Google Patents
Gap compensation structure for heating of motor main shaft Download PDFInfo
- Publication number
- CN105356650A CN105356650A CN201510842787.0A CN201510842787A CN105356650A CN 105356650 A CN105356650 A CN 105356650A CN 201510842787 A CN201510842787 A CN 201510842787A CN 105356650 A CN105356650 A CN 105356650A
- Authority
- CN
- China
- Prior art keywords
- bearing
- main shaft
- esophagus
- cervical part
- width
- 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.)
- Pending
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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
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a gap compensation structure for the heating of a motor main shaft. The gap compensation structure comprises a front end cover, a rear end cover, and a main shaft, the main shaft comprises an elastic back-up ring section, a front journal section, an iron core section, and a rear journal section, the elastic back-up ring section is provided with an elastic back-up ring, the front journal section is provided with a front bearing, the rear journal section is provided with a rear bearing, the diameter of the iron core section is greater than the diameters of the front journal section and the rear journal section, the iron core section is provided with a bearing cover, the bearing cover is abutted against an outer ring of the rear bearing, the rear journal section is also provided with a gasket, the gasket is threadingly connected with the rear journal section, a front bearing chamber is arranged in the front end cover, the width of the front bearing chamber is greater than the width of the front bearing, the rear end cover is provided with a rear bearing chamber and a first groove, and the first groove is abutted against the outer ring of the rear bearing. By employing the bearing installation method of the scheme, the bearing can bear bidirectional axial force and has a certain floating gap during the extension of the main shaft due to heating, and the stuck of the bearing is prevented.
Description
Technical field
The present invention relates to motor location structure, be specially the backlash compensation structure of a kind of electric machine main shaft heating.
Background technology
Motor refers to a kind of calutron realizing electric energy conversion according to the law of electromagnetic induction or transmit, and its Main Function produces driving torque, the power source of Chang Zuowei electrical equipment or various machinery.
Electric machine main shaft is that motor carries out being connected the strength member with transmission of power with external device (ED), for ensureing that the part on electric machine main shaft has the service position determined, the axial location of main shaft is generally realized by the axial location of bearing, simultaneously in order to bear bi-directional force, bearings at both ends all adopts fixing version, this frame mode middle (center) bearing inner ring 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 backlash compensation structure providing a kind of electric machine main shaft to generate heat, to solve the stuck problem of the bearing that causes by thermal stretching in the main shaft course of work.
The backlash compensation structure of the electric machine main shaft heating in this programme, comprise front end housing, rear end cap and main shaft, main shaft comprises circlip section, front axle cervical part of esophagus, core packet and rear axle cervical part of esophagus, circlip section is provided with circlip, front axle cervical part of esophagus place is provided with fore bearing, the inner ring of circlip and fore bearing offsets, rear axle cervical part of esophagus place is provided with rear bearing, core packet diameter is greater than front axle cervical part of esophagus and rear axle cervical part of esophagus diameter, core packet is provided with bearing cap, the outer ring of bearing cap and rear bearing offsets, rear axle cervical part of esophagus place is also provided with packing ring, the inner ring of packing ring and rear bearing offsets, packing ring is threaded with rear axle cervical part of esophagus, fore bearing room is provided with in front end housing, the width of fore bearing room is greater than the width of fore bearing, rear end cap is provided with rear bearing room and the first groove, the outer ring of the first groove and rear bearing offsets.
Principle and the effect of this programme are: electric motor back shaft bearing outer-ring under the effect of bearing cap and the first groove by two-way location, rear bearing inner ring under the effect of core packet and packing ring by two-way location, in machine operation process, rear bearing is used for bearing bi-directional force, fore bearing is axially located under the effect of circlip and core packet, when in the electric machine main shaft course of work, heating is extended, because fore bearing room width is greater than fore bearing width, therefore fore bearing will move axially with main shaft, adopt the bearing mounting means of this programme, simultaneously can also at main shaft by there being certain flying height during thermal stretching even if bearing can bear bidirectional axial force, prevent the stuck of bearing.
Further, the conveniently connection of main shaft and external device (ED), main shaft is provided with the keyway be connected with external device (ED).
Further, in order to ensure the reliability of the inner ring axial restraint of rear bearing and fore bearing, the width of rear axle cervical part of esophagus is less than the width of rear bearing, and the width of front axle cervical part of esophagus is less than the width of fore bearing.
Further, in order to prevent external fluid from entering motor, have influence on the normal work of motor, front end housing is provided with the sealing ring preventing external fluid from entering motor.
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, circlip 6, packing ring 7, bearing cap 8.
Embodiment is substantially as shown in Figure 1: the backlash compensation structure of electric machine main shaft heating, comprise rear end cap 3, rear bearing room is had on the left of rear end cap 3, rear bearing indoor are provided with rear bearing 5, rear bearing room right side opening is provided with the first groove, and the first groove and rear bearing 5 outer ring offset, and are also provided with male half coupling on the left of rear end cap 3, rear end cap 3 is coordinated with the casing of motor by male half coupling, is connected between the two by screw.
Main shaft 1 is provided with at the inner circle of rear bearing 5, main shaft 1 is from left to right divided into shaft extension section successively, circlip section, front axle cervical part of esophagus, core packet and rear axle cervical part of esophagus, wherein shaft extension section has flat key groove, shaft extension section is stretched out front end housing 2 and is connected with external motive device, circlip section is provided with circlip 6, front axle cervical part of esophagus is provided with fore bearing 4, the inner circle of fore bearing 4 and the cylindrical interference fit of front axle cervical part of esophagus, rear axle cervical part of esophagus place is provided with rear bearing 5, the inner circle of rear bearing 5 and the cylindrical interference fit of rear axle cervical part of esophagus, the excircle dimension of main shaft 1 core packet is greater than the excircle dimension of front axle cervical part of esophagus and rear axle cervical part of esophagus, 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 axle cervical part of esophagus is less than the width of rear bearing 5 simultaneously, packing ring 7 is provided with on the right side of main shaft 1 rear axle cervical part of esophagus, packing ring 7 place is provided with screw, at rear axle cervical part of esophagus, place offers screw thread, screw stretches in the screwed hole of rear cervical part of esophagus through packing ring 7 and is fixed by packing ring 7.Bearing cap 8 is also provided with at main shaft 1 core packet, bearing cap 8 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 8 male half coupling, the outer ring of rear bearing 5 is by twin fixed guide-vane.
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, fore bearing room width is greater than fore bearing 4 width, fore bearing offers through hole on the left of room, via hole profile size is less than fore bearing room overall dimension, can be used for carrying out axial limiting to fore bearing 4, also offers a groove in the through hole of front end housing 2, sealing ring is provided with, the normal work that can be used for preventing external fluid from entering motor internal affects motor in this groove.
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 backlash compensation structure of an electric machine main shaft heating, it is characterized in that, comprise front end housing, rear end cap and main shaft, described main shaft comprises circlip section, front axle cervical part of esophagus, core packet and rear axle cervical part of esophagus, described circlip section is provided with circlip, described front axle cervical part of esophagus place is provided with fore bearing, the inner ring of described circlip and described fore bearing offsets, described rear axle cervical part of esophagus place is provided with rear bearing, described core packet diameter is greater than described front axle cervical part of esophagus and described rear axle cervical part of esophagus diameter, described core packet is provided with bearing cap, the outer ring of described bearing cap and described rear bearing offsets, described rear axle cervical part of esophagus place is also provided with packing ring, the inner ring of described packing ring and described rear bearing offsets, described packing ring is threaded with described rear axle cervical part of esophagus, fore bearing room is provided with in described front end housing, the width of described fore bearing room is greater than the width of described fore bearing, described rear end cap is provided with rear bearing room and the first groove, the outer ring of described first groove and described rear bearing offsets.
2. the backlash compensation structure of electric machine main shaft heating according to claim 1, is characterized in that: described main shaft is provided with the keyway be connected with external device (ED).
3. the backlash compensation structure of electric machine main shaft heating according to claim 1, it is characterized in that: the width of described rear axle cervical part of esophagus is less than the width of described rear bearing, the width of described front axle cervical part of esophagus is less than the width of described fore bearing.
4. the backlash compensation structure of electric machine main shaft heating according to claim 1, is characterized in that: described front end housing is provided with the sealing ring preventing external fluid from entering motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510842787.0A CN105356650A (en) | 2015-11-29 | 2015-11-29 | Gap compensation structure for heating of motor main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510842787.0A CN105356650A (en) | 2015-11-29 | 2015-11-29 | Gap compensation structure for heating of motor main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105356650A true CN105356650A (en) | 2016-02-24 |
Family
ID=55332551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510842787.0A Pending CN105356650A (en) | 2015-11-29 | 2015-11-29 | Gap compensation structure for heating of motor main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105356650A (en) |
Citations (8)
| 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 |
| US5719454A (en) * | 1996-05-06 | 1998-02-17 | Carrier Corporation | Spring life improvement |
| CN201774356U (en) * | 2010-09-09 | 2011-03-23 | 北京工研精机股份有限公司 | Constant pressure preloading device for main shaft bearings of high-speed built-in motor |
| CN201893641U (en) * | 2010-12-13 | 2011-07-06 | 上海邦浦实业集团有限公司 | Bearing positioning structure of medium-sized and small-sized 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 |
| CN204103641U (en) * | 2014-09-18 | 2015-01-14 | 北京大豪科技股份有限公司 | Stepping motor |
| CN205283310U (en) * | 2015-11-29 | 2016-06-01 | 重庆元创汽车整线集成有限公司 | Clearance compensation structure that motor spindle generates heat |
-
2015
- 2015-11-29 CN CN201510842787.0A patent/CN105356650A/en active Pending
Patent Citations (8)
| 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 |
| US5719454A (en) * | 1996-05-06 | 1998-02-17 | Carrier Corporation | Spring life improvement |
| CN201774356U (en) * | 2010-09-09 | 2011-03-23 | 北京工研精机股份有限公司 | Constant pressure preloading device for main shaft bearings of high-speed built-in motor |
| CN201893641U (en) * | 2010-12-13 | 2011-07-06 | 上海邦浦实业集团有限公司 | Bearing positioning structure of medium-sized and small-sized 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 |
| CN204103641U (en) * | 2014-09-18 | 2015-01-14 | 北京大豪科技股份有限公司 | Stepping motor |
| CN205283310U (en) * | 2015-11-29 | 2016-06-01 | 重庆元创汽车整线集成有限公司 | Clearance compensation structure that motor spindle generates heat |
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| 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160224 |