CN202065322U - Main variable speed shaft of tractor gearbox - Google Patents
Main variable speed shaft of tractor gearbox Download PDFInfo
- Publication number
- CN202065322U CN202065322U CN2011201924441U CN201120192444U CN202065322U CN 202065322 U CN202065322 U CN 202065322U CN 2011201924441 U CN2011201924441 U CN 2011201924441U CN 201120192444 U CN201120192444 U CN 201120192444U CN 202065322 U CN202065322 U CN 202065322U
- Authority
- CN
- China
- Prior art keywords
- gear
- speed shaft
- main variable
- variable speed
- 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 - Fee Related
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Images
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- General Details Of Gearings (AREA)
- Structure Of Transmissions (AREA)
Abstract
The utility model discloses a main variable speed shaft of a tractor gearbox, which is characterized in that a plurality of uniformly distributed splines are arranged on the main variable speed shaft, wherein a small section of spline can serve as a gear to be engaged with a sub-stage drive gear. By adopting the splines on the main variable speed shaft to replace the conventional small gear to be engaged with the sub-stage gear, the diameter of a driving part matched with the sub-stage gear is reduced, and the matching of the main variable speed shaft and the sub-stage gear plays a more remarkable speed reducing effect under the condition that rigid conditions are met.
Description
Technical field
The utility model relates to the gear box of tractor technical field, relates in particular to the main variable-speed shaft of gear box of tractor.
Background technique
Be installed on the main variable-speed shaft in traditional gear box of tractor, generally be provided with rectangular spline or involute splines, be equipped with and subordinate's driving gear pinion in mesh and several engage a gear gears by this spline housing.During work, the engage a gear gear of stirring on the main variable-speed shaft by shifting fork mechanism is meshed with corresponding shifting gear on the fixed conveyor axle, realizes the engage a gear operation, drives subordinate's gear by the small gear on the main variable-speed shaft then and rotates, thereby realize the wheel walking.Because the small gear diameter on the main variable-speed shaft of this structure is all bigger, gear ratio is more, and the DeGrain of itself and subordinate's gear reduction if dwindle the diameter of this small gear, like this, can cause the insufficient strength of its transferring power again, influences the life-span.
The model utility content
Technical problem to be solved in the utility model provides a kind of main variable-speed shaft of gear box of tractor, makes its rigidity requirement that can satisfy transferring power, can play good deceleration effect again.
The utility model solves the problems of the technologies described above with following technological scheme:
The main variable-speed shaft of the utility model gear box of tractor is provided with some the splines that are evenly distributed on main variable-speed shaft, wherein have a bit of spline to be meshed with the driving gear of next stage as gear.
The angle of the pressure angle of every spline on the described main variable-speed shaft is 20 degree.
The utility model is by replacing small gear to drive subordinate's gear by the spline that is located on the main variable-speed shaft, thereby can dwindle the diameter of subordinate's gear, make being engaged in of this main variable-speed shaft and subordinate's gear satisfy under the condition that rigidity requires and play more obvious deceleration effect again, and volume is littler.
Description of drawings
Fig. 1 is the structural representation of the main variable-speed shaft of the utility model gear box of tractor.
Fig. 2 is that enlarged diagram is looked on the right side of Fig. 1.
Fig. 3 is assemblied in structural representation in the gearbox with the utility model master variable-speed shaft.
Among the figure: 1---main variable-speed shaft
2---spline
3---the stage casing part of spline
4---gearbox casing
5---reverse gear
6---the engage a gear gear of one/reverse gear
7---subordinate's gear
8---subordinate's gear shaft
9---third gear engage a gear gear
10---second gear engage a gear gear
11---the fixed conveyor axle
12---intermediate gear
13---three-range transmission
14---one grade of gear
Embodiment
The utility model will be further described below in conjunction with accompanying drawing:
As depicted in figs. 1 and 2, main variable-speed shaft 1 is installed on the gearbox casing 4, this main variable-speed shaft 1 is provided with 11 splines that are evenly distributed 2, the stage casing part 3 of spline 2 highly is higher than the spline of both sides, and the spline of this stage casing part is meshed with subordinate's gear 7 on being installed in subordinate's gear shaft 8, and the shape of this section spline is identical with the profile of tooth of subordinate gear 7.
With main variable-speed shaft 1 of the present utility model be assemblied in behind the gearbox casing 4 structure as shown in Figure 3, main variable-speed shaft 1 is installed in the middle part of gearbox casing 4, the right side spline upper sleeve of main variable-speed shaft 1 is equipped with second gear engage a gear gear 10 and third gear engage a gear gear 9, and the left side spline upper sleeve of main variable-speed shaft 1 is equipped with one/reverse gear engage a gear gear 6; Subordinate's gear shaft 8 of band subordinate gear 7 is equipped with in the front portion of gearbox casing 4; Fixed conveyor axle 11 is equipped with at the rear portion of gearbox casing 4, and fixed conveyor axle 11 is equipped with reverse gear 5, one grade of gear 14, three-range transmission 13, intermediate gear 12 from left to right successively.
During work, stir engage a gear gear on the main variable-speed shaft 1 by shifting fork mechanism, i.e. one/reverse gear engage a gear gear 6, second gear engage a gear gear 10 or third gear engage a gear gear 9, it is meshed with corresponding shifting gear on the fixed conveyor axle 11, thereby realize the engage a gear operation, stage casing part 3 by main variable-speed shaft 1 upper spline 2 drives 7 rotations of subordinate's gear then, and the differential gear through the differential mechanism both sides drives the actuation gear rotation coaxial with wheel again, thereby realizes wheel walking and the operation that turns to.
The utility model directly drives subordinate's gear owing to the small gear that tradition is driven subordinate's gear rotation changes into by the stage casing part that is located at the spline on the main variable-speed shaft and rotates, promptly the spline that is changed into by 11 teeth by the small gear that originally had 16 teeth drives subordinate's gear rotation, dwindled driving link diameter with subordinate's gear matched, make this main variable-speed shaft and subordinate's gear matched under the condition that satisfies the rigidity requirement, can play more obvious deceleration effect, thereby reduce the setting of other reducing gear, make the structure of speed changer become simpler, volume is littler, can also reach certain energy-saving effect.
The angle of the pressure angle of every the spline 2 on the utility model master variable-speed shaft 1 preferably is set at 20 degree.
Claims (2)
1. the main variable-speed shaft of gear box of tractor is characterized in that, is provided with some the splines that are evenly distributed on main variable-speed shaft, wherein has a bit of spline to be meshed with the driving gear of next stage as gear.
2. according to the main variable-speed shaft of the described gear box of tractor of claim 1, it is characterized in that the angle of the pressure angle of every spline on the main variable-speed shaft is 20 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201924441U CN202065322U (en) | 2011-06-09 | 2011-06-09 | Main variable speed shaft of tractor gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201924441U CN202065322U (en) | 2011-06-09 | 2011-06-09 | Main variable speed shaft of tractor gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202065322U true CN202065322U (en) | 2011-12-07 |
Family
ID=45059185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201924441U Expired - Fee Related CN202065322U (en) | 2011-06-09 | 2011-06-09 | Main variable speed shaft of tractor gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202065322U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252080A (en) * | 2011-06-09 | 2011-11-23 | 汪大汪 | Main variable shaft of tractor transmission gear |
| CN104214311A (en) * | 2014-09-24 | 2014-12-17 | 南车戚墅堰机车车辆工艺研究所有限公司 | Outer spline gear and spline gear transmission device |
-
2011
- 2011-06-09 CN CN2011201924441U patent/CN202065322U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252080A (en) * | 2011-06-09 | 2011-11-23 | 汪大汪 | Main variable shaft of tractor transmission gear |
| CN104214311A (en) * | 2014-09-24 | 2014-12-17 | 南车戚墅堰机车车辆工艺研究所有限公司 | Outer spline gear and spline gear transmission device |
| CN104214311B (en) * | 2014-09-24 | 2016-09-14 | 南车戚墅堰机车车辆工艺研究所有限公司 | Spline gear actuating device |
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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: 20111207 Termination date: 20150609 |
|
| EXPY | Termination of patent right or utility model |