CN203756933U - Fast hitching structure of tractor speed changing box gear - Google Patents
Fast hitching structure of tractor speed changing box gear Download PDFInfo
- Publication number
- CN203756933U CN203756933U CN201420133034.3U CN201420133034U CN203756933U CN 203756933 U CN203756933 U CN 203756933U CN 201420133034 U CN201420133034 U CN 201420133034U CN 203756933 U CN203756933 U CN 203756933U
- Authority
- CN
- China
- Prior art keywords
- gear
- tooth
- key
- spline
- internal spline
- 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 - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 206010055001 Hypodontia Diseases 0.000 claims description 4
- 206010002583 anodontia Diseases 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000005213 hypodontia Effects 0.000 claims description 4
- 201000006680 tooth agenesis Diseases 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 3
- 206010044048 Tooth missing Diseases 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Abstract
The utility model belongs to the technical field of speed changing boxes and relates to a fast hitching structure of a tractor speed changing box gear. The fast hitching structure of the tractor speed changing box gear comprises a middle shaft, a reverse gear driven gear and a transmission shaft, an external spline arranged at the tail end of the middle shaft can be in meshed transmission with an internal spline of the reverse gear driven gear, the reverse gear driven gear is arranged on the transmission shaft in a sliding mode, the outer spline is an interval tooth missing gear formed by removing one spline tooth every other tooth, and the internal spline facing one side of the external spline is an interval short tooth gear formed by shortening one spline tooth inwards every other spline tooth. The fast hitching structure of the tractor speed changing box gear has the advantages that due to the changes of the quantity of the teeth and the structures of the external spline and the internal spline, the internal spline of the reverse gear driven gear can be easily hitched to the external spline on the middle shaft, the reverse gear hitching is made to save labor and be easy and fast, and the fast hitching structure is suitable for the tractor speed changing box gear.
Description
Technical field
The utility model belongs to gearbox technical field, refers in particular to a kind of Rapid hanging connection structure of gear box of tractor gear.
Background technique
At present, gear box of tractor turns while reversing gear from forward gear, because vehicle has driving inertia forward, articulating immediately reverses gear has any problem, reason is that the number of teeth of internal spline of the driven gear that reverses gear of original gearbox is identical with the number of teeth of the external splines of engagement driving on jack shaft, be 40 teeth, and its structure is also identical, causes articulating the difficulty of reversing gear.
Summary of the invention
The purpose of this utility model is to provide a kind of Rapid hanging connection structure of gear box of tractor gear.
The purpose of this utility model is achieved in that
A kind of Rapid hanging connection structure of gear box of tractor gear, comprise jack shaft, driven gear and transmission shaft reverse gear, the external splines of the tail end setting of jack shaft can with the internal spline engagement driving of the driven gear that reverses gear, the driven gear that reverses gear is slidably arranged on transmission shaft, described external splines, for to remove key profile of tooth hypodontia gear at interval at interval of a key tooth, has a key teeth directional to inside contract brachmorphy stub-tooth gear at interval at interval of a key tooth on the internal spline of external splines one side.
The key tooth of above-mentioned external splines and internal spline is involute tooth.
On the bi-side of the key tooth on above-mentioned internal spline, be all formed slopely to the inside the inverted cone tooth with angle, on the bi-side of the each key tooth on described external splines, be all formed slopely to the inside the inverted cone tooth with angle, the key tooth that the key tooth on external splines is had on prevention internal spline prevents out-of-gear active force.
Above-mentioned inverted cone tooth is all to press axial direction to make the wall thickness of key tooth dwindle gradually formation from a side direction opposite side of key tooth bi-side.
Each side of the bi-side of each key tooth of above-mentioned inverted cone tooth is 1.5-3 degree with the angle of the straight line paralleling to the axis.
Each side of the bi-side of each key tooth of above-mentioned inverted cone tooth is 2.5 degree with the angle of the straight line paralleling to the axis.
The utility model compared to existing technology outstanding and useful technique effect is:
1, the number of teeth of the internal spline of the driven gear that reverses gear of gearbox of the present utility model is still 40 teeth, just on the basis of original 40 teeth, there is a key teeth directional to inside contract brachmorphy stub-tooth gear at interval at interval of a key tooth, the number of teeth of the external splines on jack shaft is to remove key profile of tooth hypodontia gear at interval at interval of a key tooth on the basis of original 40 teeth, in the situation that ensureing reliable delivery moment of torsion, due to the variation of external splines and internal spline number of teeth quantity and structure, the internal spline of driven gear of reversing gear can be articulated on the external splines on jack shaft easily, make to articulate reverse gear laborsaving, easily, fast.
2, the utility model is applicable to the Rapid hanging connection structure of gear box of tractor gear.
Brief description of the drawings
Fig. 1 is the plan view of the driven gear that reverses gear of the present utility model.
Fig. 2 is the sectional view of the driven gear that reverses gear of the present utility model.
Fig. 3 is the A portion enlarged view of Fig. 2.
Fig. 4 is that the B of Fig. 3 is to view.
Fig. 5 is the partial sectional view of jack shaft of the present utility model.
Fig. 6 is the side view of jack shaft of the present utility model.
Fig. 7 is partial sectional view of the present utility model.
Embodiment
The utility model is further described with specific embodiment below in conjunction with accompanying drawing, referring to Fig. 1-Fig. 7:
A kind of Rapid hanging connection structure of gear box of tractor gear, comprise jack shaft 20, driven gear 10 and transmission shaft 40 reverse gear, the external splines 21 of the tail end setting of jack shaft 20 can with internal spline 11 engagement driving of the driven gear 10 that reverses gear, the driven gear 10 that reverses gear is slidably arranged on tooth cover 30, tooth cover 30 is fixed on transmission shaft 40, described external splines 21 forms interval hypodontia gear for removing a key tooth 22 at interval of a key tooth 22, on the internal spline 11 of external splines 21 1 sides, has a key tooth 13 inwardly to shorten formation interval stub-tooth gear at interval of a key tooth 14.
Above-mentioned external splines 21 and the key tooth of internal spline 11 are involute tooth.
On the bi-side of the key tooth 13,14 on above-mentioned internal spline 11, be all formed slopely to the inside the inverted cone tooth with angle G, on the bi-side of the each key tooth 22 on described external splines 21, be all formed slopely to the inside the inverted cone tooth with angle, the key tooth that the key tooth on external splines 21 is had on prevention internal spline 11 prevents out-of-gear active force.
Above-mentioned inverted cone tooth is all to press axial direction to make the wall thickness of key tooth dwindle gradually formation from a side direction opposite side of key tooth bi-side.
Each side of the bi-side of each key tooth of above-mentioned inverted cone tooth is 1.5-3 degree with the angle of the straight line paralleling to the axis.
Each side of the bi-side of each key tooth of above-mentioned inverted cone tooth is 2.5 degree with the angle of the straight line paralleling to the axis.
Above-described embodiment is only preferred embodiment of the present utility model, not limits according to this protection domain of the present utility model, therefore: all equivalences of doing according to structure of the present utility model, shape, principle change, within all should being covered by protection domain of the present utility model.
Claims (6)
1. the Rapid hanging connection structure of a gear box of tractor gear, comprise jack shaft, driven gear and transmission shaft reverse gear, the external splines of the tail end setting of jack shaft can with the internal spline engagement driving of the driven gear that reverses gear, the driven gear that reverses gear is slidably arranged on transmission shaft, it is characterized in that: described external splines, for to remove key profile of tooth hypodontia gear at interval at interval of a key tooth, has a key teeth directional to inside contract brachmorphy stub-tooth gear at interval at interval of a key tooth on the internal spline of external splines one side.
2. the Rapid hanging connection structure of a kind of gear box of tractor gear according to claim 1, is characterized in that: the key tooth of described external splines and internal spline is involute tooth.
3. the Rapid hanging connection structure of a kind of gear box of tractor gear according to claim 1 and 2, it is characterized in that: on the bi-side of the key tooth on described internal spline, be all formed slopely to the inside the inverted cone tooth with angle, on the bi-side of the each key tooth on described external splines, be all formed slopely to the inside the inverted cone tooth with angle, the key tooth that the key tooth on external splines is had on prevention internal spline prevents out-of-gear active force.
4. the Rapid hanging connection structure of a kind of gear box of tractor gear according to claim 3, is characterized in that: described inverted cone tooth is all to press axial direction to make the wall thickness of key tooth dwindle gradually formation from a side direction opposite side of key tooth bi-side.
5. the Rapid hanging connection structure of a kind of gear box of tractor gear according to claim 3, is characterized in that: each side of the bi-side of each key tooth of described inverted cone tooth is 1.5-3 degree with the angle of the straight line paralleling to the axis.
6. the Rapid hanging connection structure of a kind of gear box of tractor gear according to claim 5, is characterized in that: each side of the bi-side of each key tooth of described inverted cone tooth is 2.5 degree with the angle of the straight line paralleling to the axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133034.3U CN203756933U (en) | 2014-03-22 | 2014-03-22 | Fast hitching structure of tractor speed changing box gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133034.3U CN203756933U (en) | 2014-03-22 | 2014-03-22 | Fast hitching structure of tractor speed changing box gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756933U true CN203756933U (en) | 2014-08-06 |
Family
ID=51252212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420133034.3U Expired - Lifetime CN203756933U (en) | 2014-03-22 | 2014-03-22 | Fast hitching structure of tractor speed changing box gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756933U (en) |
-
2014
- 2014-03-22 CN CN201420133034.3U patent/CN203756933U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Zhenghua Inventor before: Chen Zhengwen |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHEN ZHENGWEN TO: CHEN ZHENGHUA |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |
|
| CX01 | Expiry of patent term |