CN106678333A - Third-gear drive gear of tractor speed change box - Google Patents
Third-gear drive gear of tractor speed change box Download PDFInfo
- Publication number
- CN106678333A CN106678333A CN201510743782.2A CN201510743782A CN106678333A CN 106678333 A CN106678333 A CN 106678333A CN 201510743782 A CN201510743782 A CN 201510743782A CN 106678333 A CN106678333 A CN 106678333A
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- China
- Prior art keywords
- gear
- face
- teeth
- hole
- oil grooves
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a third-gear drive gear of a tractor speed change box. The third-gear drive gear comprises a gear body. A center through hole is formed in the center of the gear body. A transmission gear is arranged at one end of the peripheral wall of the gear body, and an outer spline is arranged at the other end of the peripheral wall of the gear body. Oil grooves are formed in the two end faces of the gear body. The end face of the part, located on the side of the outer spline, of the gear body is provided with two oblique oil grooves annularly distributed. The included angle between the center connecting line of groove openings generated through intersection of the two oblique oil grooves and the center through hole and the length extending direction of the oblique oil grooves ranges from 45 degrees to 75 degrees. The end face of the part, located on the side of the transmission gear, of the gear body is provided with two radial oil grooves annularly distributed. The center connecting line of groove openings generated through intersection of the two oblique oil grooves and the center through hole is perpendicular to the length extending direction of the two radial oil grooves. Radial oil holes communicating with the center through hole are formed in the peripheral wall of the gear body corresponding to the transmission gear.
Description
Technical field
The invention belongs to technical field of mechanical transmission, is specifically related to a kind of III grade of driving gear of gear box of tractor.
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.Existing change speed gear box driving gear with engage hitch shelves engagement after, often there is defect easily out of supply, in addition, driving gear rotatable engagement is sleeved on gear shaft, when not hanging grade, driving gear dallies relative to gear shaft, but lubricating oil can not be entered sufficiently between driving gear and gear shaft, there is the defect of lack of lubrication.
The content of the invention
In view of this, it is an object of the invention to provide a kind of III grade of driving gear of gear box of tractor, can not only prevent out of supply, and lubricant effect is more preferable.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of III grade of driving gear of gear box of tractor, including gear, the center of the gear is provided with central through hole, and one end of the periphery wall of the gear is provided with travelling gear, the other end is provided with external splines, and the two ends end face of the gear and is respectively equipped with oil groove；The gear end face for being sitting in side positioned at the external splines is provided with two uniform oblique oil grooves of annular, and two oblique oil grooves are 45-75 ° with the angle between the length bearing of trend of the line of centres of the notch that the central through hole intersects and the oblique oil groove；The gear end face positioned at travelling gear place side is provided with two uniform radial direction oil grooves of annular, is mutually perpendicular between the intersecting line of centres of notch of two oblique oil grooves and the central through hole and the length bearing of trend of two radial direction oil grooves；The periphery wall of the gear corresponding with the travelling gear is provided with the radial direction oil hole communicated with the central through hole；
All spline tooths of the external splines are disposed as teeth, the width of the teeth is gradually reduced along the direction that the 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 gear is 2-6 °.
Further, the external diameter in the arc envelope face is gradually reduced along the gear 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 relative to the inclined oblique line of the gear axis.
Further, the angle between the line of symmetry in the arc envelope face and the gear 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 gear in the arc envelope face.
Further, the radial direction oil hole annular is uniformly arranged as three.
The beneficial effects of the present invention is：
III grade of driving gear of gear box of tractor of the present invention, by the way that the spline tooth of external splines is set to into teeth, after external splines is engaged with engaging sleeve, due to the presence of the teeth, can be prevented effectively from out of supply between 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 external splines is engaged with engaging sleeve, due to the presence in the arc envelope face, even if touching between the spline tooth of external splines and the gear teeth of engaging sleeve, 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；By arranging oil groove on the end face of gear and being correspondingly arranged radial direction oil hole with travelling gear, lubricating oil is more entered in central through hole, and by radial direction oil hole lubricating transmission gear, to improve lubricant effect, reduce abrasion.
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 III grade of driving gear embodiment of gear box of tractor of the present invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the right view of Fig. 1；
Fig. 4 is the A detail drawings of Fig. 1；
Fig. 5 is the top view of Fig. 4.
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, for the structural representation of III grade of driving gear embodiment of gear box of tractor of the present invention.III grade of driving gear of gear box of tractor of the present embodiment, including gear 1, the center of gear 1 is provided with central through hole 2, and one end of the periphery wall of gear 1 is provided with travelling gear 3, the other end is provided with external splines 4, and the two ends end face of gear 1 and is respectively equipped with oil groove.Specifically, the end face of gear 1 for being sitting in side positioned at external splines 4 is provided with two uniform oblique oil grooves 5 of annular, two oblique oil grooves 5 are 45-75 ° with the angle between the line of centres of the notch that central through hole 2 intersects and the length bearing of trend of oblique oil groove 5, and two oblique oil grooves 5 of the present embodiment are 60 ° with the angle between the line of centres of the notch that central through hole 2 intersects and the length bearing of trend of oblique oil groove 5.The end face of gear 1 positioned at the place side of travelling gear 3 is provided with the uniform two radial direction oil grooves 6 of annular, is mutually perpendicular between the line of centres of notch that two oblique oil grooves 5 intersect with central through hole 2 and the length bearing of trend of two radial direction oil grooves 6.The periphery wall of gear 1 corresponding with travelling gear 3 is provided with the radial direction oil hole 7 communicated with central through hole 2.The annular of radial direction oil hole 7 of the present embodiment is uniformly arranged as three.
All spline tooths of external splines 4 are disposed as teeth 8, and the width of teeth 8 is gradually reduced along the direction that external splines 4 points to travelling gear 3, and the end face of the dorsad travelling gear 3 of teeth 8 is provided with the arc envelope face 9 formed by circular arc chamfering.Teeth 8 is axisymmetricly arranged, and the angle α between two sides in the section for falling in the plane of symmetry of teeth 8 and intercepting on corresponding teeth 8 with the plane of the diameter parallel of gear 1 is 2-6 °.The teeth 8 of the present embodiment is axisymmetricly arranged, and angle α=4 ° between two sides in the section for falling in the plane of symmetry of teeth 8 and intercepting on corresponding teeth 8 with the plane of the diameter parallel of gear 1
Further, the external diameter in arc envelope face 9 is gradually reduced along the radially outward direction of gear 1, seamlessly transits between arc envelope face 9 and the two side of corresponding teeth 8.The line of symmetry in arc envelope face 9 be relative to the inclined oblique line of the axis of gear 1, and the angle β between the line of symmetry and the axis of gear 1 in arc envelope face 9 be 80 °.The center of circle of all circular arcs is all fallen within the straight line vertical with the axis of gear 1 in the arc envelope face 9 of the present embodiment.
III grade of driving gear of gear box of tractor of the present embodiment, by the way that the spline tooth of external splines is set to into teeth, after external splines is engaged with engaging sleeve, due to the presence of the teeth, can be prevented effectively from out of supply between 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 external splines is engaged with engaging sleeve, due to the presence in the arc envelope face, even if touching between the spline tooth of external splines and the gear teeth of engaging sleeve, 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；By arranging oil groove on the end face of gear and being correspondingly arranged radial direction oil hole with travelling gear, lubricating oil is more entered in central through hole, and by radial direction oil hole lubricating transmission gear, to improve lubricant effect, reduce abrasion.
The travelling gear of the present embodiment is modulus m=3.5, and the roller gear of tooth number Z=26, external splines is modulus m=2, and the involute spline of tooth number Z=50, gear 1 is provided with the carburizing and quenching layer that depth is 0.5-0.8mm, 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 (7)
1. III grade of driving gear of a kind of gear box of tractor, it is characterised in that：Including gear, the center of the gear is provided with central through hole, and one end of the periphery wall of the gear is provided with travelling gear, and the other end is provided with external splines, and the two ends end face of the gear and is respectively equipped with oil groove；The gear end face for being sitting in side positioned at the external splines is provided with two uniform oblique oil grooves of annular, and two oblique oil grooves are 45-75 ° with the angle between the length bearing of trend of the line of centres of the notch that the central through hole intersects and the oblique oil groove；The gear end face positioned at travelling gear place side is provided with two uniform radial direction oil grooves of annular, is mutually perpendicular between the intersecting line of centres of notch of two oblique oil grooves and the central through hole and the length bearing of trend of two radial direction oil grooves；The periphery wall of the gear corresponding with the travelling gear is provided with the radial direction oil hole communicated with the central through hole；
All spline tooths of the external splines are disposed as teeth, the width of the teeth is gradually reduced along the direction that the 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 gear is 2-6 °.
2. III grade of driving gear of gear box of tractor according to claim 1, it is characterised in that：The external diameter in the arc envelope face is gradually reduced along the gear radially outward direction.
3. III grade of driving gear of gear box of tractor according to claim 2, it is characterised in that：Seamlessly transit between the arc envelope face and the two side of the corresponding teeth.
4. III grade of driving gear of gear box of tractor according to claim 3, it is characterised in that：The line of symmetry in the arc envelope face is relative to the inclined oblique line of the gear axis.
5. III grade of driving gear of gear box of tractor according to claim 4, it is characterised in that：Angle between the line of symmetry in the arc envelope face and the gear axis is 80 °.
6. III grade of driving gear of gear box of tractor according to claim 5, 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 gear in the arc envelope face.
7. III grade of driving gear of gear box of tractor according to claim 1, it is characterised in that：The radial direction oil hole annular is uniformly arranged as three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510743782.2A CN106678333A (en) | 2015-11-05 | 2015-11-05 | Third-gear drive gear of tractor speed change box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510743782.2A CN106678333A (en) | 2015-11-05 | 2015-11-05 | Third-gear drive gear of tractor speed change box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106678333A true CN106678333A (en) | 2017-05-17 |
Family
ID=58857117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510743782.2A Pending CN106678333A (en) | 2015-11-05 | 2015-11-05 | Third-gear drive gear of tractor speed change box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106678333A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830148A (en) * | 2017-12-07 | 2018-03-23 | 索特传动设备有限公司 | Gear, gear assembly, rotary reducer and engineering machinery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61136059A (en) * | 1984-12-05 | 1986-06-23 | Mitsubishi Heavy Ind Ltd | Lubricating method for gear |
| JPH05306744A (en) * | 1992-04-28 | 1993-11-19 | Musashi Seimitsu Ind Co Ltd | Transmission gear |
| CN204186951U (en) * | 2014-10-31 | 2015-03-04 | 重庆克诺斯齿轮制造有限公司 | Gearbox shifting engaging gear |
| CN204267669U (en) * | 2014-10-31 | 2015-04-15 | 重庆克诺斯齿轮制造有限公司 | Engaging sleeve toothholder |
| CN205190673U (en) * | 2015-11-05 | 2016-04-27 | 重庆克诺斯齿轮制造有限公司 | III grades of driving gears of tractor gearbox |
-
2015
- 2015-11-05 CN CN201510743782.2A patent/CN106678333A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61136059A (en) * | 1984-12-05 | 1986-06-23 | Mitsubishi Heavy Ind Ltd | Lubricating method for gear |
| JPH05306744A (en) * | 1992-04-28 | 1993-11-19 | Musashi Seimitsu Ind Co Ltd | Transmission gear |
| CN204186951U (en) * | 2014-10-31 | 2015-03-04 | 重庆克诺斯齿轮制造有限公司 | Gearbox shifting engaging gear |
| CN204267669U (en) * | 2014-10-31 | 2015-04-15 | 重庆克诺斯齿轮制造有限公司 | Engaging sleeve toothholder |
| CN205190673U (en) * | 2015-11-05 | 2016-04-27 | 重庆克诺斯齿轮制造有限公司 | III grades of driving gears of tractor gearbox |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830148A (en) * | 2017-12-07 | 2018-03-23 | 索特传动设备有限公司 | Gear, gear assembly, rotary reducer and engineering machinery |
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| 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170517 |