CN205423746U - Tractor gearbox jackshaft of shifting - Google Patents
Tractor gearbox jackshaft of shifting Download PDFInfo
- Publication number
- CN205423746U CN205423746U CN201520875405.XU CN201520875405U CN205423746U CN 205423746 U CN205423746 U CN 205423746U CN 201520875405 U CN201520875405 U CN 201520875405U CN 205423746 U CN205423746 U CN 205423746U
- Authority
- CN
- China
- Prior art keywords
- jackshaft
- external splines
- tractor
- gearshift
- gear box
- 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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Abstract
The utility model discloses a tractor gearbox jackshaft of shifting, including the jackshaft body, this internal central through hole that is equipped with of jackshaft, just the one end of jackshaft body is equipped with the meshing external splines, and the other end is equipped with the slip external splines, the meshing external splines with be equipped with between the slip external splines and be close to the drive gear that the meshing external splines set up, all spline tooths of meshing external splines all set up to the back taper tooth, the width of back taper tooth along the meshing external splines is directional drive gear's direction reduces gradually, just the back taper back of tooth to drive gear's terminal surface is equipped with the arc envelope face that is formed by circular arc chamfering, the back taper tooth is the axial symmetry setting, and hang down in back taper tooth plane of symmetry and with the parallel plane of axis of jackshaft body is corresponding contained angle between the both sides limit in the cross -section of intercepting on the back taper tooth is 2 -6. The utility model discloses a tractor gearbox jackshaft of shifting not only can prevent to take off the fender, and is more smooth -going when puting into gear the operation moreover.
Description
Technical field
This utility model belongs to technical field of mechanical transmission, is specifically related to a kind of gear box of tractor gearshift jackshaft.
Background technology
Change speed gear box is made up of gear and axle, produces variable-speed torque-converting by different gear combination, and its function mainly has: 1, change gear ratio；2, in the case of hand engine rotation is constant, dilatory function is made to fall back traveling；3, utilize neutral, interrupt power transmission, to enable the engine to startup, idling, and be easy to shift of transmission or carry out power output.
In the middle of change speed gear box, shifting shaft generally comprises travelling gear, engagement external splines and slip external splines, in the middle of existing change speed gear box, the engagement external splines of shifting shaft is when engaging with engaging sleeve, often exist and collide with and the phenomenon such as bite, cause change speed gear box to be put into gear operation irregularity, affect the performance of change speed gear box；It addition, engagement external splines is put into gear with engaging sleeve after engaging, there is also the defect of easy off-gear.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of gear box of tractor gearshift jackshaft, can not only prevent off-gear, and more smooth out when putting into gear operation.
For reaching above-mentioned purpose, this utility model following technical scheme of offer:
A kind of gear box of tractor gearshift jackshaft, including jackshaft body, described jackshaft is the most internal is provided with central through hole, and one end of described jackshaft body is provided with engagement external splines, the other end is provided with slip external splines, is provided with and engages, near described, the travelling gear that external splines is arranged between described engagement external splines with described slip external splines；
All spline tooths of described engagement external splines are disposed as teeth, the direction that the width of described teeth points to described travelling gear along described engagement external splines is gradually reduced, and the end face of the most described travelling gear of described teeth is provided with the arc envelope face formed by circular arc chamfering；Described teeth is arranged axisymmetricly, and falls in the described teeth plane of symmetry and angle between the dual-side in cross section that the plane parallel with the axis of described jackshaft body intercepts on corresponding described teeth is 2-6 °.
Further, the external diameter in described arc envelope face is gradually reduced along described jackshaft body radially outward direction.
Further, seamlessly transit between described arc envelope face with the two side of corresponding described teeth.
Further, the line of symmetry in described arc envelope face is the oblique line being inclined to set relative to described jackshaft body axis.
Further, the angle between line of symmetry and the described jackshaft body axis in described arc envelope face is 80 °.
Further, in described arc envelope face, the center of circle of all circular arcs all falls within the straight line vertical with the axis of described jackshaft body.
Further, described travelling gear is laid with, towards annular on the side, side of described slip external splines, the inclined oil hole of air led in described central through hole.
Further, the angle between axis and the axis of described jackshaft body of described inclined oil hole of air is 40 °.
Further, being positioned at annular on the end face of side, described engagement external splines place and be laid with oblique oil groove, the angle between described oblique oil groove and radial direction is 60 °.
The beneficial effects of the utility model are:
Gear box of tractor of the present utility model gearshift jackshaft, by all spline tooths of engagement external splines are disposed as teeth, after engagement external splines engages with engaging sleeve, existence due to this teeth, off-gear between engagement external splines and engaging sleeve can be prevented effectively from so that change speed gear box performance is more stable；By arranging arc envelope face at the end face of teeth, when engaging external splines and engaging with engaging sleeve, existence due to this arc envelope face, even if touching between spline tooth and the gear teeth of engaging sleeve of engagement external splines, arc envelope face also can produce a tangent line component, the gear teeth making engaging sleeve are mobile along the smooth-going of this arc envelope face, and finally realize the operation engaged of putting into gear, and i.e. making to put into gear to operate more smoothes out.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearer, this utility model provides drawings described below to illustrate:
Fig. 1 is the structural representation of this utility model gear box of tractor gearshift jackshaft embodiment；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the A detail drawing of Fig. 1；
Fig. 4 is the top view of Fig. 3.
Detailed description of the invention
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art can be better understood from this utility model and can be practiced, but illustrated embodiment is not as to restriction of the present utility model.
The structural representation of jackshaft embodiment as it is shown in figure 1, shift gears for this utility model gear box of tractor.The gear box of tractor gearshift jackshaft of the present embodiment, including jackshaft body 1, central through hole 2 it is provided with in jackshaft body 1, and one end of jackshaft body 1 is provided with engagement external splines 3, the other end is provided with slip external splines 4, is provided with near engaging the travelling gear 5 that external splines 3 is arranged between engagement external splines 3 and slip external splines 4.All spline tooths of the engagement external splines 3 of the present embodiment are disposed as teeth 6, the direction that the width of teeth 6 points to travelling gear 5 along engagement external splines 3 is gradually reduced, and the end face of teeth 6 travelling gear 5 dorsad is provided with the arc envelope face 7 formed by circular arc chamfering.Teeth 6 is arranged axisymmetricly, and the angle fallen between the dual-side in the cross section that teeth 6 plane of symmetry the plane parallel with the axis of jackshaft body 1 intercept on corresponding teeth 6 is 2-6 °.Angle α between the dual-side falling in the cross section that teeth 6 plane of symmetry the plane parallel with the axis of jackshaft body 1 intercept on corresponding teeth 6 of the present embodiment is 4 °.
The external diameter in the arc envelope face 7 of the present embodiment is gradually reduced along jackshaft body 1 radially outward direction.Seamlessly transit between arc envelope face 7 with the two side of corresponding teeth 6.The line of symmetry in arc envelope face 7 is the oblique line being inclined to set relative to jackshaft body axis.Angle β between line of symmetry and jackshaft body 1 axis in arc envelope face 7 is 80 °.In arc envelope face, the center of circle of all circular arcs all falls within the straight line vertical with the axis of jackshaft body.
The travelling gear 5 of the present embodiment is laid with, towards annular on the side, side of slip external splines 4, the inclined oil hole of air 8 led in central through hole 2.Angle γ between axis and the axis of jackshaft body 1 of inclined oil hole of air 8 is 40 °.Inclined oil hole of air 8 annular of the present embodiment is uniform is set to 6.The present embodiment is positioned at annular on the end face of engagement side, external splines 3 place and is laid with oblique oil groove 9, and the angle δ between oblique oil groove 9 and radial direction is 60 °, and oblique oil groove 9 annular of the present embodiment is uniform is set to 4.Lubricant effect can be effectively improved.
The gear box of tractor gearshift jackshaft of the present embodiment, by all spline tooths of engagement external splines are disposed as teeth, after engagement external splines engages with engaging sleeve, existence due to this teeth, off-gear between engagement external splines and engaging sleeve can be prevented effectively from so that change speed gear box performance is more stable；By arranging arc envelope face at the end face of teeth, when engaging external splines and engaging with engaging sleeve, existence due to this arc envelope face, even if touching between spline tooth and the gear teeth of engaging sleeve of engagement external splines, arc envelope face also can produce a tangent line component, the gear teeth making engaging sleeve are mobile along the smooth-going of this arc envelope face, and finally realize the operation engaged of putting into gear, and i.e. making to put into gear to operate more smoothes out.
The travelling gear of the present embodiment is modulus m=3.5, the roller gear of tooth number Z=37, engagement external splines is modulus m=2, the involute spline of tooth number Z=50, slip external splines is modulus m=2, the involute spline of tooth number Z=26, gear 1 is provided with the carbonitrided case that the degree of depth is 0.5-0.8, it is possible to effectively strengthen surface property.
Embodiment described above is only the preferred embodiment lifted by absolutely proving this utility model, and protection domain of the present utility model is not limited to this.The equivalent that those skilled in the art are made on the basis of this utility model substitutes or conversion, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (9)
1. a gear box of tractor gearshift jackshaft, it is characterized in that: include jackshaft body, described jackshaft is the most internal is provided with central through hole, and one end of described jackshaft body is provided with engagement external splines, the other end is provided with slip external splines, is provided with and engages, near described, the travelling gear that external splines is arranged between described engagement external splines with described slip external splines；
All spline tooths of described engagement external splines are disposed as teeth, the direction that the width of described teeth points to described travelling gear along described engagement external splines is gradually reduced, and the end face of the most described travelling gear of described teeth is provided with the arc envelope face formed by circular arc chamfering；Described teeth is arranged axisymmetricly, and falls in the described teeth plane of symmetry and angle between the dual-side in cross section that the plane parallel with the axis of described jackshaft body intercepts on corresponding described teeth is 2-6 °.
Gear box of tractor the most according to claim 1 gearshift jackshaft, it is characterised in that: the external diameter in described arc envelope face is gradually reduced along described jackshaft body radially outward direction.
Gear box of tractor the most according to claim 2 gearshift jackshaft, it is characterised in that: seamlessly transit between described arc envelope face with the two side of corresponding described teeth.
Gear box of tractor the most according to claim 3 gearshift jackshaft, it is characterised in that: the line of symmetry in described arc envelope face is the oblique line being inclined to set relative to described jackshaft body axis.
Gear box of tractor the most according to claim 4 gearshift jackshaft, it is characterised in that: the angle between line of symmetry and the described jackshaft body axis in described arc envelope face is 80 °.
Gear box of tractor the most according to claim 5 gearshift jackshaft, it is characterised in that: in described arc envelope face, the center of circle of all circular arcs all falls within the straight line vertical with the axis of described jackshaft body.
7. according to the gear box of tractor gearshift jackshaft described in any one of claim 1-6, it is characterised in that: described travelling gear is laid with, towards annular on the side, side of described slip external splines, the inclined oil hole of air led in described central through hole.
Gear box of tractor the most according to claim 7 gearshift jackshaft, it is characterised in that: the angle between axis and the axis of described jackshaft body of described inclined oil hole of air is 40 °.
Gear box of tractor the most according to claim 7 gearshift jackshaft, it is characterised in that: being positioned at annular on the end face of side, described engagement external splines place and be laid with oblique oil groove, the angle between described oblique oil groove and radial direction is 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520875405.XU CN205423746U (en) | 2015-11-05 | 2015-11-05 | Tractor gearbox jackshaft of shifting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520875405.XU CN205423746U (en) | 2015-11-05 | 2015-11-05 | Tractor gearbox jackshaft of shifting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205423746U true CN205423746U (en) | 2016-08-03 |
Family
ID=56518686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520875405.XU Expired - Fee Related CN205423746U (en) | 2015-11-05 | 2015-11-05 | Tractor gearbox jackshaft of shifting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205423746U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678330A (en) * | 2015-11-05 | 2017-05-17 | 重庆克诺斯齿轮制造有限公司 | Gear-shifting intermediate shaft of tractor gearbox |
-
2015
- 2015-11-05 CN CN201520875405.XU patent/CN205423746U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678330A (en) * | 2015-11-05 | 2017-05-17 | 重庆克诺斯齿轮制造有限公司 | Gear-shifting intermediate shaft of tractor gearbox |
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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: 20160803 Termination date: 20161105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |