CN202545704U - Transfer case of high-power tractor - Google Patents
Transfer case of high-power tractor Download PDFInfo
- Publication number
- CN202545704U CN202545704U CN2012201220166U CN201220122016U CN202545704U CN 202545704 U CN202545704 U CN 202545704U CN 2012201220166 U CN2012201220166 U CN 2012201220166U CN 201220122016 U CN201220122016 U CN 201220122016U CN 202545704 U CN202545704 U CN 202545704U
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Abstract
The utility model discloses a transfer case of a high-power tractor, belonging to the technical field of transmission parts of agricultural machinery. An input shaft is hollowly sleeved with a high-position input gear, an intermediate-position input gear, a low-position input gear and a reverse-position input gear, and is fixedly provided with a high/low-position shifting gear seat through a spline; a high-position output gear, an intermediate-position output gear, a low-position output gear and a reverse-position output gear, and the high-position input gear are fixed on a rear-bridge output shaft and are meshed with the intermediate-position input gear, the low-position input gear and the reverse-position input gear respectively; a front-bridge output shaft is hollowly sleeved with a front-bridge output gear which is meshed with the high-position output gear; and a reverse-position idler gear is supported on a shell assembly through a reverse-position idler gear shaft and is meshed with the reverse-position input gear and the reverse-position output gear on the rear-bridge output shaft at the same time. The transfer case disclosed by the utility model is compact in structure, multiple in gear position, large in speed ratio range, good in meshing performance, low in price, convenient to maintain, and capable of matching an engine of 120-210 horsepower.
Description
Technical field
The utility model discloses a kind of big-power 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.
Summary of the invention
The purpose of the utility model 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 big-power tractor transfer case of three forward gearss that are complementary with 120～210 horsepower engines.It is independent assembly, forms 7 * (3+1), 21 forward gears, 7 retainings that fall back with seven speed transmissions.All adopt the helical gear engagement driving.
To achieve these goals, the technological scheme that the utility model adopted is:
A kind of big-power 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; 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 big-power tractor transfer case of the utility model, 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.High, medium and low shelves, reverse gear are used same joystick manipulation.
The utility model 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.
Bearing capacity is big, reasonable, the handiness of speed ratio coupling because of it has for the utility model, can realize advantages such as large tractor power train multiple gear ratios, can satisfy the coupling demand of large tractor 120～210 horsepower engines preferably.
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 imports the structural representation that gear is meshed with reverse idler gear for the reverse gear of the utility model.
Embodiment
Like Fig. 1, shown in Figure 2, a kind of big-power tractor transfer case of the utility model 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.
The foregoing description only be used to explain inventive concept of the utility model, but not to the qualification of the utility model rights protection allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should fall into the protection domain of the utility model.
Claims (4)
1. a big-power 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; 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 big-power tractor transfer case as claimed in claim 1 is characterized in that: high, medium and low shelves, reverse gear interlock are handled.
3. a kind of big-power tractor transfer case as claimed in claim 1 is characterized in that: front and back bridge rotation direction is opposite.
4. a kind of big-power 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 |
|---|---|---|---|
| CN2012201220166U CN202545704U (en) | 2012-03-28 | 2012-03-28 | Transfer case of high-power tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201220166U CN202545704U (en) | 2012-03-28 | 2012-03-28 | Transfer case of high-power tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545704U true CN202545704U (en) | 2012-11-21 |
Family
ID=47166343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201220166U Expired - Lifetime CN202545704U (en) | 2012-03-28 | 2012-03-28 | Transfer case of high-power tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545704U (en) |
-
2012
- 2012-03-28 CN CN2012201220166U patent/CN202545704U/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 | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |