CN103195805B - Overhung rotor shaft structure - Google Patents
Overhung rotor shaft structure Download PDFInfo
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- CN103195805B CN103195805B CN201310121284.5A CN201310121284A CN103195805B CN 103195805 B CN103195805 B CN 103195805B CN 201310121284 A CN201310121284 A CN 201310121284A CN 103195805 B CN103195805 B CN 103195805B
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- rotor shaft
- lining
- rotor
- casing
- support apparatus
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention provides a kind of overhung rotor shaft structure, comprising rotor shaft, being arranged on the rotor on rotor shaft and the casing for holding rotor, gear output shaft is connected with rotor shaft first end, the second end of rotor shaft is located at by bearing, and the sticking part of rotor shaft and casing is provided with lining auxiliary support apparatus.When rotor shaft works, the lining auxiliary support apparatus being located at the sticking part of rotor shaft and casing serves the effect of supplemental support rotor shaft; Simultaneously, by being made up the bumper and absorbing shock of lining cylinder and stop collar in lining auxiliary support apparatus of flexible material, effectively weaken the effect of vibration that rotor shaft high speed rotating produces, and decrease the impact of vibration to casing, improve the reliability of whole overhung rotor shaft structure, improve the working life of equipment.
Description
Technical field
The present invention relates to mechanical transmission fields, especially, relate to a kind of overhung rotor shaft structure.
Background technique
In existing power transmission mechanism, usually adopt single bearings that the rotor shaft of rotor is housed because of the restriction of structure, its power is by the external splines transmission of gear output shaft by rotor shaft, in current transmission shaft structure, because the rotor shaft of cantilever inevitably deflection deformation occurs in the course of the work, and manufacture, spline pair tooth surface abrasion after the error produced in assembly process and Long-Time Service can make the spline joint being positioned at axle head occur angular displacement and radial direction asymmetric, rotor running accuracy is declined, bring vibration problem, its jarring effect can be delivered to casing, the stability of mechanism is impacted, if the cantilever rotor axle of High Rotation Speed also can produce vibration without flexible supplemental support and its jarring effect is passed to casing simultaneously, reduce reliability and the working life of whole mechanism.Open without being exclusively used in the device reducing cantilever rotor shaft vibration problem and jarring effect temporarily at present.
When spline transferring power, as shown in Figure 1, existing conventional spline connection all adopts the straight-tooth involute splines of flank centering, the circumference of the outer wall of prior art rotor axle is provided with external splines 12, external splines 12 comprises the large footpath 121 of external splines, external splines path 122 and external splines flank 130, the internal face of gear output shaft be axially provided with internal spline 42 accordingly, internal spline 42 comprises the large footpath 421 of internal spline, internal spline path 422 and internal spline flank 430, the flank 130 of external splines shown in figure and corresponding internal spline flank 430 mutually against, thus complete certralizing ability.After long-term use, spline tooth surface wear, spline standard pitch circle precise decreasing, will directly affect the running accuracy of axle system in flank centering.
Summary of the invention
The object of the invention is to provide a kind of overhung rotor shaft structure with lining auxiliary support apparatus, the cantilever rotor axle rotated to solve existing rotor spindle structure high speed produces and vibrates and pass to casing, cause mechanical stability to decline, reduce the reliability of rotor and the technical problem in working life.
For achieving the above object, the invention provides a kind of overhung rotor shaft structure, comprising rotor shaft, being arranged on the rotor on rotor shaft and the casing for holding rotor, gear output shaft is connected with the first end of rotor shaft, bearing is arranged on the second end of rotor shaft, and the sticking part of rotor shaft and casing is provided with lining auxiliary support apparatus.
Further, lining auxiliary support apparatus comprise columnar lining cylinder, the contact ring of equally distributed multiple projection vertically on the columnar stop collar that is connected vertically with one end of lining cylinder and the cylndrical surface being arranged on lining cylinder and stop collar inside.
Further, rotor shaft and gear output shaft spline coupling;
Further, rotor shaft is circumferentially with external splines in outer wall, external splines middle part external diameter on tooth length direction is larger, both sides external diameter is less, form a boss, gear output shaft is provided with internal spline the circumference of internal face is corresponding, and the large footpath of internal spline and the boss of external splines lean to realize radial centering;
Further, the lining cylinder of lining auxiliary support apparatus and the material of stop collar are teflon.
The present invention has following beneficial effect: when rotor shaft works, lining auxiliary support apparatus is located at the sticking part of rotor shaft and casing, serves the effect of supplemental support rotor shaft; Meanwhile, by the bumper and absorbing shock of lining auxiliary support apparatus, effectively weaken the effect of vibration that rotor shaft high speed rotating produces, greatly reduce the impact of vibration to casing, improve the reliability of mechanism, improve the working life of equipment.In addition, the lining auxiliary support apparatus structure of overhung rotor shaft structure of the present invention is very simple, is convenient to processing and fabricating and installs and uses.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is that prior art middle gear output shaft and rotor shaft spline coupling flank are felt relieved schematic diagram;
Fig. 2 is the overhung rotor shaft structure schematic diagram of the preferred embodiment of the present invention;
Fig. 3 is the lining auxiliary support apparatus structural representation of the preferred embodiment of the present invention;
Fig. 4 feels relieved schematic diagram in the gear output shaft of the preferred embodiment of the present invention and the large footpath of rotor shaft spline coupling; And
Fig. 5 is the gear output shaft of the preferred embodiment of the present invention and the sectional view of rotor shaft spline coupling.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
See Fig. 2, overhung rotor shaft structure of the present invention comprising rotor shaft 1, being located at the rotor 2 on rotor shaft 1 and the casing 3 for holding rotor 2.Wherein, the first end of rotor shaft 1 is connected with gear output shaft 4, and to be brought into by power by gear output shaft 4 and transfer in axle 1, the second end transferring to axle 1 is provided with bearing 5, for support rotor axle 1.Rotor shaft 1 is provided with lining auxiliary support apparatus 6 with the sticking part of casing 3, by supplemental support effect and the damping effect of lining auxiliary support apparatus 6, while supplemental support cantilever rotor axle 1, reduce the vibrating effect because rotor shaft 1 High Rotation Speed brings, and weaken the effect of vibration passing to casing 3, increase reliability and the accuracy of rotor shaft 1 work, promote the working life of whole mechanism.
In conjunction with see Fig. 3, lining auxiliary support apparatus 6 in this preferred embodiment comprises columnar lining cylinder 61, one end of lining cylinder 61 is connected with same columnar stop collar 62 vertically, and the cylndrical surface of stop collar 62 and lining cylinder 61 inside is evenly provided with the contact ring 63 of multiple projection.Lining auxiliary support apparatus 6 is arranged on the sticking part of rotor shaft 1 outer surface and casing 3, contact ring 63 and rotor shaft 1 exterior surface.When rotor shaft 1 works, lining assists supportive device 6 to serve the effect of supplemental support rotor shaft 1; In order to can better damping vibration effect and reduce the transmission of vibrating effect while supplemental support rotor shaft 1, lining cylinder 61 and the material of stop collar 62 are flexible teflon, when rotor shaft 1 transfers inevitably to produce vibration trend due to high-speed rotary, by buffering and the damping of lining auxiliary support apparatus 6, the effect of vibration that effective reduction rotor shaft 1 high speed rotating produces, and reduce the vibration of rotor shaft 1 to the impact effect of casing 3, thus improve the reliability of mechanism, also improve the working life of equipment.In addition, contact ring 63 in lining auxiliary support apparatus 6 is provided with multiple, axially be uniformly distributed along cylndrical surface at lining cylinder 61 and stop collar 62 inside, reduce the area of contact of the surface of contact of contact ring 63 and rotor shaft 1, and then the problem of the frictional heat brought when effectively reducing rotor shaft 1 High Rotation Speed, be also convenient to processing and fabricating; Lining auxiliary support apparatus 6 structure is very simple, is convenient to processing and fabricating.
As shown in Figure 4, Figure 5, in the overhung rotor shaft structure of this preferred embodiment, gear output shaft 4 and rotor shaft 1 spline coupling, rotor shaft 1 is circumferentially with external splines 12 in outer wall, and external splines 12 middle part external diameter on tooth length direction is comparatively large, both sides external diameter is less, thus forms a boss 13; The circumference of the internal face of gear output shaft 4 is corresponding is provided with internal spline 42, and the large footpath of internal spline 42 and the boss 13 of external splines 12 lean, and by ensureing the large footpath of spline of high-precision requirement, realizing gear output shaft 4 internal spline 42 and feeling relieved with the large footpath of external splines 12.On rotor shaft 1, in the middle part of external splines 12, external diameter is comparatively large, and both sides external diameter is less, forms a boss 13, and the centering of large footpath realizes by this section of boss 13, but not in the length of whole external splines 12.Adopt spline large footpath centering, sane, reliable certralizing ability can be obtained, contribute to the running accuracy improving axle system, and then improve the reliability of whole overhung rotor shaft structure.And, the splined shaft of rotor shaft adopts the large footpath centering mode of non-full-depth tooth length, the centering of large footpath is a bit of for the long middle part of tooth, make rotor shaft 1 can have certain angle swinging in radial direction, can reduce or eliminate the contact stress of spline top end, gear output shaft 4, casing 3 and the location of rotor shaft 1 and the required precision of coaxality can be reduced simultaneously, there is certain tolerance, decrease processing cost.
To sum up, overhung rotor shaft structure of the present invention, when rotor shaft 1 works, lining auxiliary support apparatus 6 is located at rotor shaft 1 and the sticking part of casing 3, serves the effect of supplemental support rotor shaft 1; Simultaneously, by the bumper and absorbing shock of lining auxiliary support apparatus 6, effectively weaken the transmission of effect of vibration that rotor shaft 1 high speed rotating produces and vibrating effect, greatly reduce the impact of vibration to casing 3, improve the operating reliability of overhung rotor shaft structure, improve the working life of equipment.In addition, the internal spline 42 of gear output shaft 4 adopts large footpath to feel relieved with the external splines 12 of rotor shaft 1, can obtain sane, reliable certralizing ability, contribute to the running accuracy improving axle system; On rotor shaft 1, in the middle part of external splines 12, external diameter is larger simultaneously, both sides external diameter is less, form a boss 13, the centering of large footpath realizes by this section of boss 13, make rotor shaft 1 can have certain angle swinging in radial direction, can reduce or eliminate the contact stress of external splines 12 top end, gear output shaft 4, casing 3 and the location of rotor shaft 1 and the required precision of coaxality can be reduced simultaneously, there is certain tolerance, decrease processing cost.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. an overhung rotor shaft structure, comprising rotor shaft (1), being arranged on the rotor (2) on described rotor shaft (1) and the casing (3) for holding described rotor (2), gear output shaft (4) is connected with the first end of described rotor shaft (1), bearing (5) is arranged on the second end of described rotor shaft (1), it is characterized in that: described rotor shaft (1) is provided with lining auxiliary support apparatus (6) with the sticking part of described casing (3);
The columnar stop collar (62) that described lining auxiliary support apparatus (6) comprises columnar lining cylinder (61), be connected vertically with one end of described lining cylinder (61) and the contact ring (63) being arranged on equally distributed multiple projection vertically on described lining cylinder (61) cylndrical surface inner with stop collar (62);
Described rotor shaft (1) and described gear output shaft (4) spline coupling;
Described rotor shaft (1) is circumferentially with external splines (12) in outer wall, described external splines (12) middle part external diameter on tooth length direction is larger, both sides external diameter is less, form a boss (13), described gear output shaft (4) is provided with internal spline (42) the circumference of internal face is corresponding, and the large footpath of described internal spline (42) and the described boss (13) of described external splines (12) lean to realize radial centering.
2. overhung rotor shaft structure according to claim 1, is characterized in that, the described lining cylinder (61) of described lining auxiliary support apparatus (6) and the material of described stop collar (62) are teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310121284.5A CN103195805B (en) | 2013-04-09 | 2013-04-09 | Overhung rotor shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310121284.5A CN103195805B (en) | 2013-04-09 | 2013-04-09 | Overhung rotor shaft structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103195805A CN103195805A (en) | 2013-07-10 |
| CN103195805B true CN103195805B (en) | 2015-10-21 |
Family
ID=48718542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310121284.5A Active CN103195805B (en) | 2013-04-09 | 2013-04-09 | Overhung rotor shaft structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103195805B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4133188A (en) * | 1977-07-13 | 1979-01-09 | General Motors Corporation | Back-up torque transmitting structure |
| CN201198806Y (en) * | 2008-05-13 | 2009-02-25 | 施建新 | Steel ball axial positioning starter |
| CN101881271A (en) * | 2010-03-31 | 2010-11-10 | 芜湖杰锋汽车动力系统有限公司 | Input end assembly of mechanical supercharger |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002247827A (en) * | 2001-02-20 | 2002-08-30 | Moric Co Ltd | Dc motor |
| DE102004007758A1 (en) * | 2004-02-18 | 2005-09-08 | Texparts Gmbh | High speed rotor bearing for open ended spinning rotor has screw retention holder |
-
2013
- 2013-04-09 CN CN201310121284.5A patent/CN103195805B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4133188A (en) * | 1977-07-13 | 1979-01-09 | General Motors Corporation | Back-up torque transmitting structure |
| CN201198806Y (en) * | 2008-05-13 | 2009-02-25 | 施建新 | Steel ball axial positioning starter |
| CN101881271A (en) * | 2010-03-31 | 2010-11-10 | 芜湖杰锋汽车动力系统有限公司 | Input end assembly of mechanical supercharger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103195805A (en) | 2013-07-10 |
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