CN204267502U - The hollow splined shaft of gearbox - Google Patents
The hollow splined shaft of gearbox Download PDFInfo
- Publication number
- CN204267502U CN204267502U CN201420641306.0U CN201420641306U CN204267502U CN 204267502 U CN204267502 U CN 204267502U CN 201420641306 U CN201420641306 U CN 201420641306U CN 204267502 U CN204267502 U CN 204267502U
- Authority
- CN
- China
- Prior art keywords
- shaft body
- hollow shaft
- teeth
- spline
- hollow
- 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.)
- Expired - Fee Related
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- Gears, Cams (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses the hollow splined shaft of a kind of gearbox, comprise hollow shaft body, central through bore logical during the center of described hollow shaft body is provided with, and one end of described hollow shaft body is provided with engage a gear spline, the other end is provided with long spline, all spline tooths of described engage a gear spline are all set to teeth, and the direction that the width of described teeth points to described long spline along described engage a gear spline reduces gradually, and the end face of described teeth is provided with the arc envelope face formed by circular arc chamfering; Described teeth is arranged axisymmetricly, and fall in described teeth symmetry plane and angle between the dual-side in the cross section intercepted on corresponding described teeth with the plane of the axis being parallel of described hollow shaft body is 0-7 °, in any two described cross sections, the angle between the dual-side in the cross section nearer apart from the axis of described hollow shaft body is greater than the angle between the dual-side in the cross section far away apart from the axis of described hollow shaft body.
Description
Technical field
The utility model belongs to technical field of mechanical transmission, is specifically related to the hollow splined shaft of a kind of gearbox.
Background technique
Gearbox is made up of gear and axle, and produce variable-speed torque-converting by different Gear combination, its function mainly contains: 1, change velocity ratio; 2, in the constant situation of hand engine rotation, automobile can be fallen back traveling; 3, utilize neutral, interrupt transmission of power, to start to enable motor, idling, and be convenient to shifting of transmission or carry out Power output.The hollow splined shaft of gearbox is provided with engage a gear spline and the long spline for set gear, when engage a gear spline engages with other gear structure engage a gears, not only exists and collides with and the problem such as bite, but also there is defect easily out of supply.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of gearbox hollow splined shaft, can not only prevent out of supply, and more smooth-going during engage a gear.
For achieving the above object, the utility model provides following technological scheme:
The hollow splined shaft of a kind of gearbox, comprise hollow shaft body, central through bore logical during the center of described hollow shaft body is provided with, and one end of described hollow shaft body is provided with engage a gear spline, the other end is provided with long spline, all spline tooths of described engage a gear spline are all set to teeth, and the direction that the width of described teeth points to described long spline along described engage a gear spline reduces gradually, and the end face of described teeth is provided with the arc envelope face formed by circular arc chamfering; Described teeth is arranged axisymmetricly, and fall in described teeth symmetry plane and angle between the dual-side in the cross section intercepted on corresponding described teeth with the plane of the axis being parallel of described hollow shaft body is 0-7 °, in any two described cross sections, the angle between the dual-side in the cross section nearer apart from the axis of described hollow shaft body is greater than the angle between the dual-side in the cross section far away apart from the axis of described hollow shaft body.
Further, the external diameter in described arc envelope face reduces gradually along the described radially outer direction of hollow shaft body.
Further, seamlessly transit between described arc envelope face with the two side of corresponding described teeth.
Further, the symmetrical line in described arc envelope face is in the oblique line tilted relative to described hollow shaft body axis.
Further, the angle between the symmetrical line in described arc envelope face and described hollow shaft body axis is 80 °.
Further, in described arc envelope face, the center of circle of all circular arcs is all dropped on on the straight line of the axes normal of described hollow shaft body.
Further, the effective length of described long spline and the length ratio of described hollow shaft body are 0.8-0.85.
Further, the internal diameter of described central through bore is 0.6-0.7 with the ratio of the standard pitch diameter of described long spline.
The beneficial effects of the utility model are:
The hollow splined shaft of gearbox of the present utility model, by arranging teeth on engage a gear spline, after engage a gear spline engages with other tooth-shape structure engage a gears, due to the existence of this teeth, effectively can avoid between engage a gear spline and other tooth-shape structures out of supply, make gearbox performance more stable; By arranging arc envelope face at the end face of teeth, when engage a gear spline engages with other tooth-shape structure engage a gears, due to the existence in this arc envelope face, even if touch between the spline tooth of engage a gear spline and the gear teeth of other tooth-shape structures, arc envelope face also can produce a tangent line component, make the gear teeth of other tooth-shape structures along this smooth-going movement in arc envelope face, and finally realize the operation of engage a gear engagement, namely make engage a gear operate more smooth-going.
Accompanying drawing explanation
In order to make the purpose of this utility model, technological scheme and beneficial effect clearly, the utility model provides following accompanying drawing to be described:
Fig. 1 is the structural representation of the hollow splined shaft embodiment of the utility model gearbox;
Fig. 2 is the A detail drawing of Fig. 1;
Fig. 3 is the B direction view of Fig. 2;
Fig. 4 is the C-C sectional drawing of Fig. 2.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, and to make those skilled in the art better can understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
As shown in Figure 1, be the structural representation of the utility model gearbox hollow shaft embodiment.The gearbox hollow shaft of the present embodiment, comprise hollow shaft body 1, central through bore 2 logical during the center of described hollow shaft body 1 is provided with, and one end of described hollow shaft body 1 is provided with engage a gear spline 3, the other end is provided with long spline 4, all spline tooths of described engage a gear spline 3 are all set to teeth 5, and the direction that the width of described teeth 5 points to described long spline 4 along described engage a gear spline 3 reduces gradually, and the end face of described teeth 5 is provided with the arc envelope face formed by circular arc chamfering.Concrete, the effective length of long spline 4 and the length ratio of described hollow shaft body 1 are 0.8-0.85, the internal diameter of central through bore 2 is 0.6-0.7 with the ratio of the standard pitch diameter of described long spline 4, the effective length of the long spline 4 of the present embodiment and the length ratio of described hollow shaft body 1 are 0.82, and the internal diameter of central through bore 2 is 0.65 with the ratio of the standard pitch diameter of described long spline 4.
Further, the teeth 5 of the present embodiment is arranged axisymmetricly, and the symmetry plane of spline tooth is the plane at hollow shaft body 1 axis and this spline tooth Topland center line place.Angle α perpendicular to spline tooth symmetry plane and between the dual-side of arbitrary section that intercepts on corresponding teeth 5 of the plane being parallel to hollow shaft body 1 axis is 0-7 °, and in any two described cross sections, the angle between the dual-side in the cross section nearer apart from described hollow shaft body 1 axis is greater than the angle of the dual-side in the cross section far away apart from described hollow shaft body 1 axis.Namely the angle between teeth 5 Topland bi-side is 0 °, angle between the dual-side in the cross section of teeth 5 tooth root place intercepting is 7 °, adopts the teeth 5 of this structure, can not only prevent out of supply, and the structural strength of engage a gear spline 3 can be ensured, its power transmission ability can not be affected.
Further, the external diameter in the arc envelope face 6 of the present embodiment reduces gradually along the described radially outer direction of hollow shaft body 1, and seamlessly transits between arc envelope face 6 with the two side of corresponding described teeth 5, can avoid bite further.The symmetrical line in arc envelope face 6 is that the angle β between the symmetrical line in the arc envelope face 6 of the present embodiment and described hollow shaft body axis is 80 ° relative to described hollow shaft body 1 axis in the oblique line tilted.In arc envelope face 6, the center of circle of all circular arcs is all dropped on on the straight line of the axes normal of described hollow shaft body 1.Adopt the arc envelope face of this structure, engage a gear can be made smooth-going.
The engage a gear spline of the present embodiment is modulus m=2, the involute outer spline of tooth number Z=30, long spline is the involute outer spline of modulus m=2, tooth number Z=26, and hollow shaft body 1 is provided with the carbonitrided case that the degree of depth is 0.8-1.2mm, can effectively strengthen surface strength and wear-resisting property.
The hollow splined shaft of gearbox of the present embodiment, by arranging teeth on engage a gear spline, after engage a gear spline engages with other tooth-shape structure engage a gears, due to the existence of this teeth, effectively can avoid between engage a gear spline and other tooth-shape structures out of supply, make gearbox performance more stable; By arranging arc envelope face at the end face of teeth, when engage a gear spline engages with other tooth-shape structure engage a gears, due to the existence in this arc envelope face, even if touch between the spline tooth of engage a gear spline and the gear teeth of other tooth-shape structures, arc envelope face also can produce a tangent line component, make the gear teeth of other tooth-shape structures along this smooth-going movement in arc envelope face, and finally realize the operation of engage a gear engagement, namely make engage a gear operate more smooth-going.
The above embodiment is only for absolutely proving the preferred embodiment that the utility model is lifted, and protection domain of the present utility model is not limited thereto.The equivalent alternative or conversion that those skilled in the art do on the utility model basis, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (8)
1. the hollow splined shaft of gearbox, it is characterized in that: comprise hollow shaft body, central through bore logical during the center of described hollow shaft body is provided with, and one end of described hollow shaft body is provided with engage a gear spline, the other end is provided with long spline, all spline tooths of described engage a gear spline are all set to teeth, and the direction that the width of described teeth points to described long spline along described engage a gear spline reduces gradually, and the end face of described teeth is provided with the arc envelope face formed by circular arc chamfering; Described teeth is arranged axisymmetricly, and fall in described teeth symmetry plane and angle between the dual-side in the cross section intercepted on corresponding described teeth with the plane of the axis being parallel of described hollow shaft body is 0-7 °, in any two described cross sections, the angle between the dual-side in the cross section nearer apart from the axis of described hollow shaft body is greater than the angle between the dual-side in the cross section far away apart from the axis of described hollow shaft body.
2. the hollow splined shaft of gearbox according to claim 1, is characterized in that: the external diameter in described arc envelope face reduces gradually along the described radially outer direction of hollow shaft body.
3. the hollow splined shaft of gearbox according to claim 2, is characterized in that: seamlessly transit between described arc envelope face with the two side of corresponding described teeth.
4. the hollow splined shaft of gearbox according to claim 3, is characterized in that: the symmetrical line in described arc envelope face is in the oblique line tilted relative to described hollow shaft body axis.
5. the hollow splined shaft of gearbox according to claim 4, is characterized in that: the angle between the symmetrical line in described arc envelope face and described hollow shaft body axis is 80 °.
6. the hollow splined shaft of gearbox according to claim 4, is characterized in that: in described arc envelope face, the center of circle of all circular arcs is all dropped on on the straight line of the axes normal of described hollow shaft body.
7. the hollow splined shaft of gearbox according to claim 1, is characterized in that: the effective length of described long spline and the length ratio of described hollow shaft body are 0.8-0.85.
8. the hollow splined shaft of gearbox according to claim 1, is characterized in that: the internal diameter of described central through bore is 0.6-0.7 with the ratio of the standard pitch diameter of described long spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420641306.0U CN204267502U (en) | 2014-10-31 | 2014-10-31 | The hollow splined shaft of gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420641306.0U CN204267502U (en) | 2014-10-31 | 2014-10-31 | The hollow splined shaft of gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267502U true CN204267502U (en) | 2015-04-15 |
Family
ID=52802373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420641306.0U Expired - Fee Related CN204267502U (en) | 2014-10-31 | 2014-10-31 | The hollow splined shaft of gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204267502U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100227A (en) * | 2016-08-16 | 2016-11-09 | 中车永济电机有限公司 | Large tractor alternating current electric drive system traction motor |
-
2014
- 2014-10-31 CN CN201420641306.0U patent/CN204267502U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100227A (en) * | 2016-08-16 | 2016-11-09 | 中车永济电机有限公司 | Large tractor alternating current electric drive system traction motor |
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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 |
Granted publication date: 20150415 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |