CN102221077A - Automatic differential mechanism of change gear case for tractor - Google Patents
Automatic differential mechanism of change gear case for tractor Download PDFInfo
- Publication number
- CN102221077A CN102221077A CN2011101536188A CN201110153618A CN102221077A CN 102221077 A CN102221077 A CN 102221077A CN 2011101536188 A CN2011101536188 A CN 2011101536188A CN 201110153618 A CN201110153618 A CN 201110153618A CN 102221077 A CN102221077 A CN 102221077A
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- gear
- differential
- differential mechanism
- tractor
- tooth part
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Abstract
The invention discloses an automatic differential mechanism of a change gear case for a tractor, comprising a disc gear and two half axle gears, wherein the disc gear is arranged at the middle part of a differential mechanism shaft, the half axle gear comprises a sun tooth part and a straight tooth part and is arranged at each of the two sides of the disc gear, the disc gear is internally provided with a planetary gear which is meshed with the sun tooth part of the half axle gear, and the sun tooth part and the straight tooth part which form the half axle gear are integrally molded to have an integral structure. The automatic differential mechanism has the function of speed reducing as well as the effect of energy conservation, and can raise the position of a box body of a speed changer by a matched driving gear, thereby substantially improving the passing performance of a tractor; and the automatic differential mechanism is flexible in steering and has long service life.
Description
Technical field
The present invention relates to the technical field of gear box of tractor, specifically is a kind of automatic differential mechanism of gear box of tractor.
Background technique
The differential mechanism that is used to turn in the tradition gear box of tractor, generally be that employing is manually operated, promptly manually control separates two semiaxis teeth that drive the wheel of both sides respectively and mesh together, thereby realizes steering operation, and this manually operated differential mechanism uses convenient inadequately.Now also have the automatic differential mechanism on the automobile is directly applied to the steering-wheel type gear box of tractor, this structure mainly is made of the dish gear that is installed in differential axle middle part, the conical bearing that places the differential gear of dish gear both sides and be close to the differential gear outside, differential gear is made of sun gear and the straight-tooth gear that tightly is enclosed within on the sun gear outrigger shaft, in the dish gear planetary pinion is installed, planetary pinion is meshed with sun gear, and straight-tooth gear connects the transmission shaft driving wheel by the next stage gear again and rotates.This differential mechanism is because straight-tooth gear and sun gear are the socket relation, and both belong to the structure of independence, split, cause the external diameter of straight-tooth gear bigger, can not play decelerating effect, and it are bigger to take up space, and make the chassis lower, influence using effect.If in order to realize deceleration, with the reduced of straight-tooth gear, cause its rigidity and intensity not to reach requirement again, be damaged easily, the rate of fault height, steadiness is poor.
Summary of the invention
Technical problem to be solved by this invention provides a kind of automatic differential mechanism of realizing the gear box of tractor of deceleration.
The present invention solves the problems of the technologies described above with following technological scheme:
The automatic differential mechanism of gear box of tractor of the present invention comprises dish gear and two differential gears that partly are made of sun toothed portion and straight-tooth that are installed in the differential axle middle part, two differential gears lay respectively at the both sides of dish gear, in the dish gear planetary pinion is installed, planetary pinion is meshed with the sun toothed portion of differential gear, and the sun toothed portion and the straight-tooth of described formation differential gear are partly made integrally formed overall structure.
In the axis hole of described differential gear axle sleeve is installed.
The present invention partly is made into integrally formed overall structure by the sun toothed portion and the straight-tooth that will constitute differential gear, thereby under the situation of the diameter that does not change differential axle, can be with the reduced diameter of straight-tooth part, it is connected with the driving wheel that drives wheel and realizes deceleration, thereby can strengthen the reduction speed ratio of gearbox, reduce the reducing gear of next stage, and reach energy-saving effect, and turn to flexibly, the life-span is long.
In addition, differential mechanism of the present invention can make the mission case position be improved by the actuation gear that cooperates, thereby makes the performance of passing through of tractor significantly improve.
Description of drawings
Fig. 1 is the structural representation of the automatic differential mechanism of gear box of tractor of the present invention.
Among the figure: 1---the dish gear
2---planetary pinion
3---the sun toothed portion of differential gear
4---the straight-tooth part of differential gear
5---differential gear
6---plain thrust bearing
7---ball bearing
8---actuation gear
9---transmission shaft
10---copper sheathing
11---differential axle
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
As shown in Figure 1, the automatic differential mechanism of the present invention is mainly by the dish gear 1 that is installed on the differential axle 11, two differential gears 5, two plain thrust bearings 6 and two ball bearings 7 constitute, dish gear 1 is installed in the middle part of differential axle 11, in the dish gear 1 planetary pinion 2 is installed, two differential gears 5 lay respectively at the both sides of dish gear 1, and be respectively equipped with sun toothed portion 3 and straight-tooth part 4, sun toothed portion 3 and straight-tooth part 4 are made integrally formed, the overall structure that aperture axis is identical, wherein sun toothed portion 3 is meshed with planetary pinion 2, straight-tooth part 4 outsides of two differential gears have a plain thrust bearing 6 and a ball bearing 7 respectively, plain thrust bearing 6 is close to the straight-tooth part 4 of differential gear 5, to prevent that differential gear 5 from moving when rotated laterally, ball bearing 7 is fixed on the gearbox casing, is used to support differential axle 11.
Automatic differential mechanism of the present invention is installed in the gearbox of steering wheel tractor.When tractor need be turned right, the differential gear on right side can not rotate, the differential gear in left side then can be driven to rotate along with planetary rotation automatically, the actuation gear 8 that drives transmission shaft 9 one ends that are installed in the left side simultaneously rotates, this transmission shaft 9 drives the wheel that is installed in the transmission shaft the other end again, thereby realizes steering operation.
Because the power that the present invention produces outside thrust when differential gear is rotated and is used to support differential axle is separately born by two bearings, thereby improve the steadiness of differential mechanism, and bearing is difficult for being worn, maintenance rate is low, and then prolongs the life-span of differential mechanism.
The automatic differential mechanism of the present invention is made integrally formed overall structure by the sun toothed portion 3 and the straight-tooth part 4 that will constitute differential gear 5, be that sun toothed portion 3 is made the identical overall structure of aperture axis with straight-tooth part 4 by forging and pressing, casting or welding manner, can not completely separately separate by physical method.Like this, the rigidity of straight-tooth part 4 and intensity are meeting the requirements of simultaneously, its external diameter is more much smaller than the diameter of traditional socket mode, therefore it meshes with actuation gear 8 and just plays decelerating effect, thereby make gearbox can reduce the next stage reducing gear, dwindle the volume of gearbox, can reach energy-conservation effect again, and turn to flexibly, the life-span is long.
In order further to improve the life-span of automatic differential mechanism, the present invention can also install wear resistance and all good copper sheathing 10 of sliding on the axis hole of differential gear 5.
Described copper sheathing 10 also can be replaced by the axle sleeve that other material is made.
Claims (2)
1. the automatic differential mechanism of gear box of tractor, comprise dish gear and two differential gears that partly constitute by sun toothed portion and straight-tooth of being installed in the differential axle middle part, two differential gears lay respectively at the both sides of dish gear, in the dish gear planetary pinion is installed, planetary pinion is meshed with the sun toothed portion of differential gear, it is characterized in that the sun toothed portion and the straight-tooth of described formation differential gear are partly made integrally formed overall structure.
2. the automatic differential mechanism of gear box of tractor according to claim 1 is characterized in that, in the axis hole of described differential gear axle sleeve is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101536188A CN102221077A (en) | 2011-06-09 | 2011-06-09 | Automatic differential mechanism of change gear case for tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101536188A CN102221077A (en) | 2011-06-09 | 2011-06-09 | Automatic differential mechanism of change gear case for tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102221077A true CN102221077A (en) | 2011-10-19 |
Family
ID=44777713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101536188A Pending CN102221077A (en) | 2011-06-09 | 2011-06-09 | Automatic differential mechanism of change gear case for tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102221077A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267103A (en) * | 2013-04-26 | 2013-08-28 | 韦瑞林 | Clutch type differential with gear ring capable of sliding on gear ring seat |
| CN103939572A (en) * | 2014-04-30 | 2014-07-23 | 江苏合成齿轮有限公司 | Simple mechanical differential lock |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5059160A (en) * | 1988-11-02 | 1991-10-22 | Carraro S.P.A. | Self-locking differential gear |
| US5980416A (en) * | 1997-08-06 | 1999-11-09 | Sven B. Gafvert | Differential for a vehicle |
| CN2379344Y (en) * | 1999-06-14 | 2000-05-24 | 宫云利 | Mechanism for driving walking tractor |
| CN2403615Y (en) * | 1999-12-22 | 2000-11-01 | 李学胜 | Automatic difference torque differential mechanism for non-steering handle knob hand tractor |
| CN200958566Y (en) * | 2006-07-20 | 2007-10-10 | 赵军 | Stepless liquid-controlled gear |
| CN201220688Y (en) * | 2008-04-28 | 2009-04-15 | 王海卫 | Lock ring type double-acting central transmission speed differientiator differential lock control device |
| CN201561109U (en) * | 2009-12-03 | 2010-08-25 | 贾建有 | Tractor differential with self-locking device |
| CN202065439U (en) * | 2011-06-09 | 2011-12-07 | 汪大汪 | Automatic differential of transmission case of tractor |
-
2011
- 2011-06-09 CN CN2011101536188A patent/CN102221077A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5059160A (en) * | 1988-11-02 | 1991-10-22 | Carraro S.P.A. | Self-locking differential gear |
| US5980416A (en) * | 1997-08-06 | 1999-11-09 | Sven B. Gafvert | Differential for a vehicle |
| CN2379344Y (en) * | 1999-06-14 | 2000-05-24 | 宫云利 | Mechanism for driving walking tractor |
| CN2403615Y (en) * | 1999-12-22 | 2000-11-01 | 李学胜 | Automatic difference torque differential mechanism for non-steering handle knob hand tractor |
| CN200958566Y (en) * | 2006-07-20 | 2007-10-10 | 赵军 | Stepless liquid-controlled gear |
| CN201220688Y (en) * | 2008-04-28 | 2009-04-15 | 王海卫 | Lock ring type double-acting central transmission speed differientiator differential lock control device |
| CN201561109U (en) * | 2009-12-03 | 2010-08-25 | 贾建有 | Tractor differential with self-locking device |
| CN202065439U (en) * | 2011-06-09 | 2011-12-07 | 汪大汪 | Automatic differential of transmission case of tractor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267103A (en) * | 2013-04-26 | 2013-08-28 | 韦瑞林 | Clutch type differential with gear ring capable of sliding on gear ring seat |
| CN103939572A (en) * | 2014-04-30 | 2014-07-23 | 江苏合成齿轮有限公司 | Simple mechanical differential lock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111019 |