CN102606686A - Transfer case of large tractor - Google Patents
Transfer case of large tractor Download PDFInfo
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- CN102606686A CN102606686A CN2012100856785A CN201210085678A CN102606686A CN 102606686 A CN102606686 A CN 102606686A CN 2012100856785 A CN2012100856785 A CN 2012100856785A CN 201210085678 A CN201210085678 A CN 201210085678A CN 102606686 A CN102606686 A CN 102606686A
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Abstract
The invention discloses a transfer case of a large tractor, which belongs to the technical field of agricultural machinery transmission parts. A high-gear input gear, a medium-gear input gear, a low-gear input gear and a reverse-gear input gear are hollowly sleeved on an input shaft, a high-low gear shifting gear block is fixed onto the input shaft through a spline, a brake mounting support is fixed onto a shell component, and a brake disc is fixed onto the input shaft. A high-gear output gear, a medium-gear output gear, a low-gear output gear and a reverse-gear output gear are fixed onto a rear axle output shaft, wherein the high-gear output gear, the medium-gear output gear and the low-gear output gear are engaged with the high-gear input gear, the medium-gear input gear and the low-gear input gear respectively. A front axle output gear is hollowly sleeved on a front axle output shaft and engaged with the high-gear output gear. A reverse-gear idle gear is supported on the shell component through a reverse-gear idle gear shaft, and is simultaneously engaged with the reverse-gear input gear and the reverse-gear output gear on the rear axle output shaft. The transfer case is compact in structure, wide in speed ratio range, fine in meshing performance, low in cost and convenient in maintenance, has multiple gears, and can be matched with a 180-220 horsepower engine.
Description
Technical field
The present invention discloses a kind of large tractor transfer case, belongs to agricultural machinery driving component technical field.
Background technique
The transfer case of present domestic separate assembling big-power tractor is two forward gearss, a reverse gear structure.For further promoting the efficient of motor in power range, be satisfied with the job requirements of tractor, need the more transfer case of exploitation gear.Simultaneously, along with engine horsepower increases, receive the restriction of speed changer complete machine structure and tractor bulk, the structure that stopping brake is installed on the speed changer is difficult to satisfy the big-power tractor growth requirement.
Summary of the invention
The object of the invention is exactly in order to overcome the deficiency of above-mentioned existence; And a kind of compact structure is provided, gear is many, ratio coverage is big, meshing performance is good, low price, easy to maintenance, can satisfy the large tractor transfer case of three forward gearss that are complementary with 180～220 horsepower engines.
To achieve these goals, the technological scheme that the present invention adopted is:
A kind of large tractor transfer case comprises the input shaft, back axle output shaft, the propons output shaft that from top to bottom are installed in successively in the frame set; Be set with high-grade input gear, middle-grade input gear, low-grade input gear, reverse gear input gear through needle bearing on the input shaft; Be fixed with high and low shift gear shift toothholder through spline on the input shaft; The break erection support is fixed on the frame set; Brake disc is fixed on the input shaft, and brake disc is positioned at the output terminal of transfer case; Be fixed with high-grade output gear, middle-grade output gear, low-grade output gear, reverse gear output gear on the back axle output shaft, and high-grade output gear, middle-grade output gear, low-grade output gear are meshed with top grade input gear, middle-grade input gear, low-grade input gear respectively; Be set with the propons output gear through needle bearing on the propons output shaft, the propons output gear is meshed with high-grade output gear, realizes the output of propons power; Reverse idler gear is bearing on the frame set through the reverse idler gear axle, and reverse idler gear and reverse gear input gear is when being meshed, and is meshed with reverse gear output gear on the back axle output shaft.
As the further setting of such scheme, described input shaft and back axle output shaft all are bearing on the frame set through roller bearing.
Described propons output shaft is bearing on the frame set through tapered roller bearing.
Described gear engagement is the helical gear engagement.
A kind of large tractor transfer case of the present invention, high, medium and low shelves, the empty cover of reverse gear on the input shaft, the high and low shift toothholder is fixed on the input shaft with spline, middle-gradely is designed to integral body with reverse gear toothholder and input shaft; Simultaneously, increase by an idle pulley, realize car-backing function at outlet side.Output shaft cogs hot jacket on axle, respectively with input shaft on gear, idle pulley be meshed, in collar shift mechanism effect down, realize the high, medium and low shelves of transfer case, reverse gear, and before and after bridge export transmission system.The break erection support is fixed on the frame set, supplies break usefulness is installed, and brake disc is fixed on the input shaft through spline.
The present invention is the stationary axle drive mechanism, creatively places transfer case to tractor reverse gear; Have high, medium and low three forward gearss, a reverse gear function, can realize forward and backward bridge output; Forward and backward bridge output rotation direction is opposite; Adopt full helical teeth engagement transferring power; High, medium and low shelves and reverse gear adopt the transmission of engagement cover; Parking brake is installed on the input shaft.
Bearing capacity is big, reasonable, the handiness of speed ratio coupling because of it has in the present invention, can realize advantages such as large tractor power train multiple gear ratios, can satisfy the coupling demand of large tractor 180～210 horsepower engines preferably.
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Description of drawings
Fig. 1 is a structural representation of the present invention;
The structural representation that Fig. 2 is meshed with reverse idler gear for reverse gear input gear of the present invention.
Embodiment
Like Fig. 1, shown in Figure 2, a kind of large tractor transfer case of the present invention comprises the input shaft 1, back axle output shaft 10, the propons output shaft 17 that from top to bottom are installed in successively in the frame set 9.
Input shaft 1 is bearing on the frame set 9 through roller bearing 2,24, high-grade input gear 3, middle-grade input gear 4, low-grade input gear 5, reverse gear input gear 6 through needle bearing respectively sky be enclosed within on the input shaft 1; High-grade input gear 3, middle-grade input gear 4, low-grade input gear 5,6 of gears of reverse gear input are equipped with collar shift mechanism respectively, and the spline that high and low shift gear shift toothholder 21 passes through is fixed on the input shaft 1, and middle-grade, reverse gear toothholder and input shaft 1 are made of one.Back axle output shaft 10 is bearing on the frame set 9 through roller bearing 11,12; High-grade output gear 13, middle-grade output gear 14, low-grade output gear 15, reverse gear output gear 16 are installed on the back axle output shaft 10 through interference fit, high-grade output gear 13, middle-grade output gear 14, low-grade output gear 15 respectively with input shaft 1 on top grade input gear 3, middle-grade input gear 4, the 5 corresponding engagements of low-grade input gear; Reverse idler gear axle 22 directly is bearing on the frame set 9, and reverse idler gear 23 is enclosed within on the reverse idler gear axle 22 through the needle bearing sky, with input shaft 1 in 6 engagements of reverse gear input gear, be meshed with reverse gear output gear 16 on the back axle output shaft 10.
Propons output shaft 17 is bearing on the frame set 9 through tapered roller bearing 18, and propons output gear 19 is enclosed within on the propons output shaft 17 through the needle bearing sky, is meshed with high-grade output gear 13 on the back axle output shaft 10.
Under the choosing of top cover assembly 7, shift lever effect; Reverse shift fork system in the last cap assembly 8 begins to move forward and backward; The tooth cover that drives in the collar shift mechanism between high, medium and low shelves or the reverse gear moves forward and backward; Combine with the spline on the corresponding shifting gear, the free gear of a certain gear on the input shaft 1 and input shaft 1 are combined into one, realize the power output of this gear.(example: when moving behind the reverse gear tooth cover when engaging with reverse gear input gear 6 upper splines, power is imported gear 6 through input shaft 1 to reverse gear, to reverse idler gear 23, to reverse gear output gear 16, to back axle output shaft 10, after bead is exported to transmission shaft.）
During propons output, tooth cover 20 is under the effect of operating mechanism, and reach combines with propons output gear 19, and propons output gear 19 and propons output shaft 17 are combined into one, and realizes the output of propons power.
Break erection support 25 is fixed on the frame set 9, and break usefulness supply to be installed, and brake disc 26 is fixed on the input shaft 1 through spline, and brake disc 26 is positioned at the output terminal of transfer case, satisfies braking function.
The foregoing description only is used to the inventive concept of the present invention of explaining, but not to the qualification of rights protection of the present invention, allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should fall into protection scope of the present invention.
Claims (4)
1. a large tractor transfer case is characterized in that: comprise the input shaft, back axle output shaft, the propons output shaft that from top to bottom are installed in successively in the frame set; Be set with high-grade input gear, middle-grade input gear, low-grade input gear, reverse gear input gear through needle bearing on the input shaft; Be fixed with high and low shift gear shift toothholder through spline on the input shaft; The break erection support is fixed on the frame set, and brake disc is fixed on the input shaft; Be fixed with high-grade output gear, middle-grade output gear, low-grade output gear, reverse gear output gear on the back axle output shaft, and high-grade output gear, middle-grade output gear, low-grade output gear are meshed with top grade input gear, middle-grade input gear, low-grade input gear respectively; Be set with the propons output gear through needle bearing on the propons output shaft, the propons output gear is meshed with high-grade output gear; Reverse idler gear is bearing on the frame set through the reverse idler gear axle, and reverse idler gear and reverse gear input gear is when being meshed, and is meshed with reverse gear output gear on the back axle output shaft.
2. a kind of large tractor transfer case as claimed in claim 1, it is characterized in that: parking brake erection support and brake disc are installed on the input shaft, and are positioned at the output terminal of transfer case.
3. a kind of large tractor transfer case as claimed in claim 1 is characterized in that: front and back output bridge rotation direction is opposite.
4. a kind of large tractor transfer case as claimed in claim 1 is characterized in that: described gear engagement is the helical gear engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100856785A CN102606686A (en) | 2012-03-28 | 2012-03-28 | Transfer case of large tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100856785A CN102606686A (en) | 2012-03-28 | 2012-03-28 | Transfer case of large tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102606686A true CN102606686A (en) | 2012-07-25 |
Family
ID=46524341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100856785A Pending CN102606686A (en) | 2012-03-28 | 2012-03-28 | Transfer case of large tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102606686A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044512A (en) * | 2016-12-30 | 2017-08-15 | 三海洋重工有限公司 | Transfer case and crane |
| CN108128157A (en) * | 2017-12-25 | 2018-06-08 | 安徽农业大学 | A kind of and mating real-time controllable output device of more power of horticultural tractor |
| CN108757899A (en) * | 2018-06-07 | 2018-11-06 | 安徽泗州拖拉机制造有限公司 | A kind of large tractor transfer case |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4855913A (en) * | 1987-05-29 | 1989-08-08 | J. I. Case Company | Electronic control system for powershift transmission |
| CN2053998U (en) * | 1989-05-05 | 1990-03-07 | 任玉林 | Centre disk type vehicle stopping brake |
| CN201090686Y (en) * | 2007-10-26 | 2008-07-23 | 浙江长泰机械有限公司 | Large tractor transfer case |
| CN201723660U (en) * | 2010-05-28 | 2011-01-26 | 上海欧弈控制技术有限公司 | Tractor gear box and wheel tractor with tractor gear box |
| CN202833882U (en) * | 2012-03-28 | 2013-03-27 | 浙江长泰机械有限公司 | Large tractor transfer case |
-
2012
- 2012-03-28 CN CN2012100856785A patent/CN102606686A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4855913A (en) * | 1987-05-29 | 1989-08-08 | J. I. Case Company | Electronic control system for powershift transmission |
| CN2053998U (en) * | 1989-05-05 | 1990-03-07 | 任玉林 | Centre disk type vehicle stopping brake |
| CN201090686Y (en) * | 2007-10-26 | 2008-07-23 | 浙江长泰机械有限公司 | Large tractor transfer case |
| CN201723660U (en) * | 2010-05-28 | 2011-01-26 | 上海欧弈控制技术有限公司 | Tractor gear box and wheel tractor with tractor gear box |
| CN202833882U (en) * | 2012-03-28 | 2013-03-27 | 浙江长泰机械有限公司 | Large tractor transfer case |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044512A (en) * | 2016-12-30 | 2017-08-15 | 三海洋重工有限公司 | Transfer case and crane |
| CN108128157A (en) * | 2017-12-25 | 2018-06-08 | 安徽农业大学 | A kind of and mating real-time controllable output device of more power of horticultural tractor |
| CN108757899A (en) * | 2018-06-07 | 2018-11-06 | 安徽泗州拖拉机制造有限公司 | A kind of large tractor transfer case |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120725 |