CN205283310U - Clearance compensation structure that motor spindle generates heat - Google Patents
Clearance compensation structure that motor spindle generates heat Download PDFInfo
- Publication number
- CN205283310U CN205283310U CN201520961757.7U CN201520961757U CN205283310U CN 205283310 U CN205283310 U CN 205283310U CN 201520961757 U CN201520961757 U CN 201520961757U CN 205283310 U CN205283310 U CN 205283310U
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- China
- Prior art keywords
- bearing
- section
- axle journal
- main shaft
- ring
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- Expired - Fee Related
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Abstract
The utility model discloses a clearance compensation structure that motor spindle generates heat, the brushless motor comprises a front end cover, rear end cap and main shaft, the main shaft includes the circlip section, preceding axle journal section, iron core section and back axle journal section, the circlip section is equipped with circlip, preceding axle journal section department is equipped with the fore bearing, back axle journal section department is equipped with the rear bearing, axle journal section and back axle journal section diameter before iron core section diameter is greater than, the iron core section is equipped with the bearing cap, the bearing cap offsets with the outer lane of rear bearing, back axle journal section department still is equipped with the packing ring, packing ring and back axle journal section threaded connection, be equipped with the fore bearing room in the front end housing, the width of fore bearing room is greater than the width of fore bearing, the rear end cap is equipped with rear bearing room and first recess, first recess offsets with the outer lane of rear bearing. The bearing mounting means of this scheme of adoption simultaneously can also receive thermal stretching certain unsteady clearance occasionally at the main shaft even the bearing can bear two -way axial force, prevents that the card of bearing is died.
Description
Technical field
The utility model relates to motor locating structure, is specially the backlash compensation structure of a kind of electric machine main shaft heating.
Background technology
Motor refers to a kind of electromagnetism device realizing electric energy conversion according to the law of electromagnetic induction or transmitting, and its main effect produces to drive torque, the propulsion source of Chang Zuowei electrical equipment or various machinery.
Electric machine main shaft is that motor carries out being connected the important part with transmission of power with outer part device, part for ensureing on electric machine main shaft has the working position determined, the axial location of main shaft is generally that the axial location by bearing realizes, simultaneously in order to bear bi-directional force, bearings at both ends all adopts fixing structure formation, this kind of structure mode centre bearer inner ring is fastened on main shaft by shrink-fit, outer ring step cover blocks, bearings at both ends stops the unidirectional of main shaft to alter respectively, in this kind of structure, when main shaft is subject to thermal elongation in working process, owing to bearings at both ends is all fixed, so time will cause the stuck of bearing, and then cause whole motor to work.
Practical novel content
The utility model is intended to the backlash compensation structure providing a kind of electric machine main shaft to generate heat, to solve in main shaft working process the stuck problem of the bearing caused by thermal elongation.
The backlash compensation structure of the electric machine main shaft heating in this scheme, comprise front end end cover, rear end cap and main shaft, main shaft comprises elasticity back-up ring section, front axle journal section, core packet and rear shaft neck section, elasticity back-up ring section is provided with elasticity back-up ring, front axle journal section place is provided with front bearing, the inner ring of elasticity back-up ring and front bearing offsets, rear shaft neck section place is provided with rear bearing, core packet diameter is greater than front axle journal section and rear shaft neck section diameter, core packet is provided with step cover, the outer ring of step cover and rear bearing offsets, rear shaft neck section place is also provided with packing ring, the inner ring of packing ring and rear bearing offsets, packing ring is threaded with rear shaft neck section, front bearing room it is provided with in front end end cover, the width of front bearing room is greater than the width of front bearing, rear end is covered 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 scheme be: motor rear bearing outer ring under the effect of step cover 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, front bearing is axially located under the effect of elasticity back-up ring and core packet, when in electric machine main shaft working process, heating is extended, owing to front bearing room width is greater than front bearing width, therefore front bearing will move axially with main shaft, adopt the bearing of this scheme that mode is installed, simultaneously can also at main shaft by there being certain flying height during thermal elongation even if bearing can bear bidirectional axial force, prevent the stuck of bearing.
Further, in order to facilitate main shaft and the connection of outer part device, the keyway that main shaft is provided with outer part device is connected.
Further, in order to ensure the reliability that the inner ring of rear bearing and front bearing is axially fixed, the width of rear shaft neck section is less than the width of rear bearing, and the width of front axle journal section is less than the width of front bearing.
Further, in order to prevent external fluid from entering motor, having influence on the normal operation of motor, front end end cover is provided with the sealing-ring preventing external fluid from entering motor.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Below by embodiment, the utility model is described in further detail:
Reference numeral in Figure of description comprises: main shaft 1, front end end cover 2, rear end cap 3, front bearing 4, rear bearing 5, elasticity back-up ring 6, packing ring 7, step cover 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 end on the left of rear end cap 3, rear end cap 3 is coordinated with the machine shell of motor by male end, is connected by screw between the two.
Inner circle at rear bearing 5 is provided with main shaft 1, main shaft 1 is from left to right divided into shaft extension section successively, elasticity back-up ring section, front axle journal section, core packet and rear shaft neck section, wherein shaft extension section has flat key groove, shaft extension section is stretched out front end end cover 2 and is connected with external motive device, elasticity back-up ring section is provided with elasticity back-up ring 6, front axle journal section is provided with front bearing 4, the inner circle of front bearing 4 and the cylindrical shrink-fit of front axle journal section, rear shaft neck section place is provided with rear bearing 5, the inner circle of rear bearing 5 and the cylindrical shrink-fit of rear shaft neck section, the excircle dimension of main shaft 1 core packet is greater than the excircle dimension of front axle journal section and rear shaft neck section, can be used for the location when axis of front bearing 4 and rear bearing 5 being installed, the width of main shaft 1 rear shaft neck section is less than the width of rear bearing 5 simultaneously, it is provided with packing ring 7 on the right side of main shaft 1 rear shaft neck section, packing ring 7 place is provided with screw, in rear shaft neck section, place has offered screw thread, packing ring 7 is fixed in stretching into the threaded hole of collare section through packing ring 7 by screw. step cover 8 also it is provided with at main shaft 1 core packet, step cover 8 right side opening is provided with male end, male end external diameter size is identical with rear bearing 5 excircle dimension, male end internal diameter size is greater than rear bearing 5 outer ring internal diameter size, under the acting in conjunction of the first groove and step cover 8 male end, the outer ring of rear bearing 5 is by twin fixed guide-vane.
It is provided with front end end cover 2 in the left side of main shaft 1, front bearing room is had on the right side of front end end cover 2, front bearing room width is greater than front bearing 4 width, front bearing has offered through hole on the left of room, via hole profile size is less than front bearing room physical dimension, can be used for front bearing 4 is carried out axial limiting, has also offered a groove in the through hole of front end end cover 2, it is provided with sealing-ring, the normal operation that can be used for preventing external fluid from entering motor internal affects motor in this groove.
Above-described is only embodiment of the present utility model, 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 the utility model structure, it is also possible to make some distortion and improvement; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability that the utility model is implemented. The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in specification sheets 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 end cover, rear end cap and main shaft, described main shaft comprises elasticity back-up ring section, front axle journal section, core packet and rear shaft neck section, described elasticity back-up ring section is provided with elasticity back-up ring, described front axle journal section place is provided with front bearing, the inner ring of described elasticity back-up ring and described front bearing offsets, described rear shaft neck section place is provided with rear bearing, described core packet diameter is greater than described front axle journal section and described rear shaft neck section diameter, described core packet is provided with step cover, the outer ring of described step cover and described rear bearing offsets, described rear shaft neck section 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 shaft neck section, front bearing room it is provided with in described front end end cover, the width of described front bearing room is greater than the width of described front bearing, described rear end is covered 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 according to claim 1 heating, it is characterised in that: the keyway that described main shaft is provided with outer part device is connected.
3. the backlash compensation structure of electric machine main shaft according to claim 1 heating, it is characterised in that: the width of described rear shaft neck section is less than the width of described rear bearing, and the width of described front axle journal section is less than the width of described front bearing.
4. the backlash compensation structure of electric machine main shaft according to claim 1 heating, it is characterised in that: described front end end cover is provided with the sealing-ring preventing external fluid from entering motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520961757.7U CN205283310U (en) | 2015-11-29 | 2015-11-29 | Clearance compensation structure that motor spindle generates heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520961757.7U CN205283310U (en) | 2015-11-29 | 2015-11-29 | Clearance compensation structure that motor spindle generates heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205283310U true CN205283310U (en) | 2016-06-01 |
Family
ID=56067844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520961757.7U Expired - Fee Related CN205283310U (en) | 2015-11-29 | 2015-11-29 | Clearance compensation structure that motor spindle generates heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205283310U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356650A (en) * | 2015-11-29 | 2016-02-24 | 重庆元创汽车整线集成有限公司 | Gap compensation structure for heating of motor main shaft |
-
2015
- 2015-11-29 CN CN201520961757.7U patent/CN205283310U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356650A (en) * | 2015-11-29 | 2016-02-24 | 重庆元创汽车整线集成有限公司 | Gap compensation structure for heating of motor main shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20181129 |