CN106678330A - Gear-shifting intermediate shaft of tractor gearbox - Google Patents
Gear-shifting intermediate shaft of tractor gearbox Download PDFInfo
- Publication number
- CN106678330A CN106678330A CN201510743433.0A CN201510743433A CN106678330A CN 106678330 A CN106678330 A CN 106678330A CN 201510743433 A CN201510743433 A CN 201510743433A CN 106678330 A CN106678330 A CN 106678330A
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- CN
- China
- Prior art keywords
- jackshaft
- teeth
- external splines
- shaft body
- gear
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- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a gear-shifting intermediate shaft of a tractor gearbox. The gear-shifting intermediate shaft of the tractor gearbox comprises an intermediate shaft body; a central through hole is formed in the intermediate shaft body; one end of the intermediate shaft body is provided with an external meshing spline, and the other end of the intermediate shaft body is provided with an external sliding spline; a transmission gear arranged close to the external meshing spline is arranged between the external meshing spline and the external sliding spline; all the spline teeth of the external meshed spline are arranged to be reversed tapered teeth; the widths of the reversed tapered teeth are gradually reduced in the direction from the external meshing spline to the transmission gear; arc enveloping surfaces formed by arc chamfers are arranged on the end surfaces, opposite to the transmission gear, of the reversed tapered teeth; the reversed tapered teeth are arranged in an axial symmetry mode; and the included angle between the two side edges of a section, obtained on each corresponding reversed tapered tooth, of a plane perpendicular to the symmetry plane of each reversed tapered tooth and parallel to the axis of the intermediate shaft body is 2-6 degrees. The gear-shifting intermediate shaft of the tractor gearbox has the advantages that the spontaneous out-of-gear phenomenon can be avoided, and gear shifting can be smoother in the operation process.
Description
Technical field
The invention 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, and by different gear combinations variable-speed torque-converting is produced, and its function mainly has：1st, gear ratio is changed；2nd, in the case of hand engine rotation is constant, dilatory function is made to fall back traveling；3rd, neutral is utilized, interrupts power transmission, to enable the engine to starting, idling, and be easy to shifting of transmission or carry out power output.
Shifting shaft generally comprises travelling gear, engagement external splines and slip external splines in the middle of change speed gear box, the engagement external splines of shifting shaft with engaging sleeve when engaging in the middle of existing change speed gear box, often exist and collide with and the phenomenon such as bite, cause gearbox shifting to operate irregularity, affect the performance of change speed gear box；In addition, engagement external splines is hitched after shelves engagement with engaging, also there is defect easily out of supply.
The content of the invention
In view of this, it is an object of the invention to provide a kind of gear box of tractor gearshift jackshaft, can not only prevent out of supply, and more smooth out hanging when shelves are operated.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of gear box of tractor gearshift jackshaft, including middle shaft body, central through hole is provided with the middle shaft body, and one end of the middle shaft body is provided with engagement external splines, the other end is provided with slip external splines, is provided between the engagement external splines and the transmission external splines near the travelling gear for engaging external splines setting；
All spline tooths of the engagement external splines are disposed as teeth, the width of the teeth is gradually reduced along the direction that the engagement external splines points to the travelling gear, and the end face of the teeth dorsad travelling gear is provided with the arc envelope face formed by circular arc chamfering；The teeth is axisymmetricly arranged, and the angle between two sides in the section for falling in the teeth plane of symmetry and intercepting on the corresponding teeth with the plane of the diameter parallel of the middle shaft body is 2-6 °.
Further, the external diameter in the arc envelope face is gradually reduced along the middle shaft body radially outward direction.
Further, seamlessly transit between the arc envelope face and the two side of the corresponding teeth.
Further, the line of symmetry in the arc envelope face is the oblique line being inclined to set relative to the jackshaft body axis.
Further, the angle between the line of symmetry in the arc envelope face and the jackshaft body axis is 80 °.
Further, the center of circle of all circular arcs is all fallen within the straight line vertical with the axis of the middle shaft body in the arc envelope face.
Further, travelling gear annular towards on the side side of the slip external splines is laid with the inclined oil hole of air led in the central through hole.
Further, the angle between the axis of the axis of the inclined oil hole of air and the middle shaft body is 40 °.
Further, annular is laid with oblique oil groove on the end face of the engagement external splines place side, and the angle between the oblique oil groove and radial direction is 60 °.
The beneficial effects of the present invention is：
The gear box of tractor gearshift jackshaft of the present invention, by the way that all spline tooths of engagement external splines are disposed as into teeth, after engagement external splines is engaged with engaging sleeve, due to the presence of the teeth, can be prevented effectively from out of supply between engagement external splines and engaging sleeve so that change speed gear box performance is more stable；Arc envelope face is arranged by the end face in teeth, when engagement external splines is engaged with engaging sleeve, due to the presence in the arc envelope face, even if touching between the spline tooth and the gear teeth of engaging sleeve of engagement external splines, arc envelope face can also produce a tangent line component, the gear teeth for making engaging sleeve are moved along the arc envelope face smooth-going, and finally realize hanging the operation of shelves engagement, that is, extension shelves operation is more smoothed out.
Description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and illustrates：
Fig. 1 is the structural representation of gear box of tractor gearshift jackshaft embodiment of the present invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the A detail drawings of Fig. 1；
Fig. 4 is the top view of Fig. 3.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described with specific embodiment, so that those skilled in the art can be better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As shown in figure 1, the structural representation of jackshaft embodiment of shifting gears for gear box of tractor of the present invention.The gear box of tractor gearshift jackshaft of the present embodiment, including middle shaft body 1, central through hole 2 is provided with middle shaft body 1, and one end of middle shaft body 1 is provided with engagement external splines 3, the other end is provided with slip external splines 4, engages and is provided near the travelling gear 5 for engaging the setting of external splines 3 between external splines 3 and transmission external splines 4.All spline tooths of the engagement external splines 3 of the present embodiment are disposed as teeth 6, the width of teeth 6 is gradually reduced along the direction that engagement external splines 3 points to travelling gear 5, and the end face of the dorsad travelling gear 5 of teeth 6 is provided with the arc envelope face 7 formed by circular arc chamfering.Teeth 6 is axisymmetricly arranged, and the angle between two sides in the section for falling in the plane of symmetry of teeth 6 and intercepting on corresponding teeth 6 with the plane of the diameter parallel of middle shaft body 1 is 2-6 °.Angle α between two sides in the section for falling in the plane of symmetry of teeth 6 and intercepting on corresponding teeth 6 with the plane of the diameter parallel of middle shaft body 1 of the present embodiment is 4 °.
The external diameter in the arc envelope face 7 of the present embodiment is gradually reduced along the radially outward direction of middle shaft body 1.Seamlessly transit between arc envelope face 7 and 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 the line of symmetry in arc envelope face 7 and the middle axis of shaft body 1 is 80 °.The center of circle of all circular arcs is all fallen within the straight line vertical with the axis of middle shaft body in arc envelope face.
The travelling gear 5 of the present embodiment annular towards on the side side of slip external splines 4 is laid with the inclined oil hole of air 8 led in central through hole 2.Angle γ between the axis of the axis of inclined oil hole of air 8 and middle shaft body 1 is 40 °.The annular of inclined oil hole of air 8 of the present embodiment is uniformly arranged as 6.The present embodiment is located at annular on the end face of engagement external splines 3 place side and is laid with oblique oil groove 9, and the angle δ between oblique oil groove 9 and radial direction is 60 °, and the annular of oblique oil groove 9 of the present embodiment is uniformly arranged as 4.Lubricant effect can be effectively improved.
The gear box of tractor gearshift jackshaft of the present embodiment, by the way that all spline tooths of engagement external splines are disposed as into teeth, after engagement external splines is engaged with engaging sleeve, due to the presence of the teeth, can be prevented effectively from out of supply between engagement external splines and engaging sleeve so that change speed gear box performance is more stable；Arc envelope face is arranged by the end face in teeth, when engagement external splines is engaged with engaging sleeve, due to the presence in the arc envelope face, even if touching between the spline tooth and the gear teeth of engaging sleeve of engagement external splines, arc envelope face can also produce a tangent line component, the gear teeth for making engaging sleeve are moved along the arc envelope face smooth-going, and finally realize hanging the operation of shelves engagement, that is, extension shelves operation is more smoothed 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 depth is 0.5-0.8, can effectively strengthen surface property.
Embodiment described above is only the preferred embodiment lifted to absolutely prove the present invention, protection scope of the present invention not limited to this.Equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, within protection scope of the present invention.Protection scope of the present invention is defined by claims.
Claims (9)
1. a kind of gear box of tractor is shifted gears jackshaft, it is characterised in that：Including middle shaft body, central through hole is provided with the middle shaft body, and one end of the middle shaft body is provided with engagement external splines, the other end is provided with slip external splines, is provided between the engagement external splines and the transmission external splines near the travelling gear for engaging external splines setting；
All spline tooths of the engagement external splines are disposed as teeth, the width of the teeth is gradually reduced along the direction that the engagement external splines points to the travelling gear, and the end face of the teeth dorsad travelling gear is provided with the arc envelope face formed by circular arc chamfering；The teeth is axisymmetricly arranged, and the angle between two sides in the section for falling in the teeth plane of symmetry and intercepting on the corresponding teeth with the plane of the diameter parallel of the middle shaft body is 2-6 °.
2. gear box of tractor according to claim 1 is shifted gears jackshaft, it is characterised in that：The external diameter in the arc envelope face is gradually reduced along the middle shaft body radially outward direction.
3. gear box of tractor according to claim 2 is shifted gears jackshaft, it is characterised in that：Seamlessly transit between the arc envelope face and the two side of the corresponding teeth.
4. gear box of tractor according to claim 3 is shifted gears jackshaft, it is characterised in that：The line of symmetry in the arc envelope face is the oblique line being inclined to set relative to the jackshaft body axis.
5. gear box of tractor according to claim 4 is shifted gears jackshaft, it is characterised in that：Angle between the line of symmetry in the arc envelope face and the jackshaft body axis is 80 °.
6. gear box of tractor according to claim 5 is shifted gears jackshaft, it is characterised in that：The center of circle of all circular arcs is all fallen within the straight line vertical with the axis of the middle shaft body in the arc envelope face.
7. according to any one of claim 1-6 gear box of tractor gearshift jackshaft, it is characterised in that：Travelling gear annular towards on the side side of the slip external splines is laid with the inclined oil hole of air led in the central through hole.
8. gear box of tractor according to claim 7 is shifted gears jackshaft, it is characterised in that：Angle between the axis of the axis of the inclined oil hole of air and the middle shaft body is 40 °.
9. gear box of tractor according to claim 7 is shifted gears jackshaft, it is characterised in that：Annular is laid with oblique oil groove on the end face of the engagement external splines place side, and the angle between the oblique oil groove and radial direction is 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510743433.0A CN106678330A (en) | 2015-11-05 | 2015-11-05 | Gear-shifting intermediate shaft of tractor gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510743433.0A CN106678330A (en) | 2015-11-05 | 2015-11-05 | Gear-shifting intermediate shaft of tractor gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106678330A true CN106678330A (en) | 2017-05-17 |
Family
ID=58857702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510743433.0A Pending CN106678330A (en) | 2015-11-05 | 2015-11-05 | Gear-shifting intermediate shaft of tractor gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106678330A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575555A (en) * | 2017-09-07 | 2018-01-12 | 安庆市振发汽车锻件有限责任公司 | A kind of automobile gearbox two axles of input and its roughing technique |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201145024Y (en) * | 2008-01-17 | 2008-11-05 | 隆鑫工业有限公司 | Engine non-forced lubrication gear |
| CN201461903U (en) * | 2009-09-04 | 2010-05-12 | 重庆克诺斯齿轮制造有限公司 | Intermediate rail driving shaft gear of heavy-duty tractor gearbox |
| CN204186925U (en) * | 2014-10-31 | 2015-03-04 | 重庆克诺斯齿轮制造有限公司 | Gearbox coupling shaft |
| CN204186963U (en) * | 2014-10-31 | 2015-03-04 | 重庆克诺斯齿轮制造有限公司 | Auxiliary transmission gear shaft |
| CN204267649U (en) * | 2014-10-31 | 2015-04-15 | 重庆克诺斯齿轮制造有限公司 | Gearbox driving gear |
| CN205423746U (en) * | 2015-11-05 | 2016-08-03 | 重庆克诺斯齿轮制造有限公司 | Tractor gearbox jackshaft of shifting |
-
2015
- 2015-11-05 CN CN201510743433.0A patent/CN106678330A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201145024Y (en) * | 2008-01-17 | 2008-11-05 | 隆鑫工业有限公司 | Engine non-forced lubrication gear |
| CN201461903U (en) * | 2009-09-04 | 2010-05-12 | 重庆克诺斯齿轮制造有限公司 | Intermediate rail driving shaft gear of heavy-duty tractor gearbox |
| CN204186925U (en) * | 2014-10-31 | 2015-03-04 | 重庆克诺斯齿轮制造有限公司 | Gearbox coupling shaft |
| CN204186963U (en) * | 2014-10-31 | 2015-03-04 | 重庆克诺斯齿轮制造有限公司 | Auxiliary transmission gear shaft |
| CN204267649U (en) * | 2014-10-31 | 2015-04-15 | 重庆克诺斯齿轮制造有限公司 | Gearbox driving gear |
| CN205423746U (en) * | 2015-11-05 | 2016-08-03 | 重庆克诺斯齿轮制造有限公司 | Tractor gearbox jackshaft of shifting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575555A (en) * | 2017-09-07 | 2018-01-12 | 安庆市振发汽车锻件有限责任公司 | A kind of automobile gearbox two axles of input and its roughing technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170517 |
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| RJ01 | Rejection of invention patent application after publication |