CN205155101U - Wheeled tractor gearbox third gear variable speed structure - Google Patents
Wheeled tractor gearbox third gear variable speed structure Download PDFInfo
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- CN205155101U CN205155101U CN201520962961.0U CN201520962961U CN205155101U CN 205155101 U CN205155101 U CN 205155101U CN 201520962961 U CN201520962961 U CN 201520962961U CN 205155101 U CN205155101 U CN 205155101U
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Abstract
The utility model relates to a wheeled tractor gearbox third gear variable speed structure, the empty cover of a driven gear and the 2nd driven gear is installed on the output shaft and is corresponded respectively and often meshes with first driving gear and third driving gear, first meshing awl has on the driven gear, third meshing awl has on the 3rd driven gear, between the toothholder is connected at the output shaft and is lain in first meshing awl the meshing is bored with the second, the empty cover of the 2nd driven gear is installed and is often meshed on the 3rd driven gear and with the second driving gear, second meshing awl on the 2nd driven gear lies in one side of third meshing awl, the meshing cover key -type connection that has the inner gearing awl can axial displacement on the toothholder, be equipped with the recess in the meshing cover, the meshing cover is stirred to the shift fork makes the inner gearing awl bore with first meshing respectively, second meshing awl and the meshing of third meshing awl are passed to power on the output shaft. The utility model discloses it is rational in infrastructure, impact and noise that slip gear selection shelves brought can be eliminated, and the axial dimensions of gearbox can be reduced.
Description
Technical field
The utility model relates to a kind of wheeled tractor gearbox three class gear shift structure, belongs to wheeled tractor transmission technology field.
Background technique
Two kinds of technological schemes are adopted usually for tractor three-speed gearbox.A kind of scheme is placed in auxiliary transmission reverse gear, goes into 4 speed, adopt two engaging sleeves or synchronizer to carry out gear selecting.The shortcoming of this structure is that tractor can not configure the capable gearshift of shuttle, is unfavorable for tractor shuttle working demand.The second technological scheme is in main-gear box, increase the capable gearshift of shuttle, and adopts sliding gear to double as the mode gear selecting of engaging sleeve in auxiliary transmission, and namely intervening gears adopts sliding gear, and two ends adopt engaging sleeve.This two kinds of speed changing structures, when intervening gears, namely adopt sliding gear gear selecting, and engage a gear resistance is comparatively large, and impact obviously, noise is larger.In addition, above-mentioned speed changing structure easily produces trip stop phenomenon, needs to take anti-trip stop measure, and whole auxiliary transmission axial dimension is comparatively large, compact not.
Summary of the invention
The purpose of this utility model is to provide a kind of rational in infrastructure, can eliminate impact and noise that sliding gear gear selecting brings, and can reduce the wheeled tractor gearbox three class gear shift structure of the axial dimension of gearbox.
The utility model is the technological scheme achieved the above object: a kind of wheeled tractor gearbox three class gear shift structure, comprise and be arranged on input shaft on gear housing and output shaft by bearing, described input shaft is provided with the first driving gear successively, second driving gear and the 3rd driving gear, described output shaft is provided with the first corresponding driven gear, second driven gear and the 3rd driven gear, it is characterized in that: the first described driven gear and the second driven gear empty set to be arranged on output shaft and correspondingly respectively often to engage with the first driving gear and the 3rd driving gear, first driven gear has the first engagement cone, 3rd driven gear has the 3rd engagement cone, toothholder is connected to output shaft and engages between cone at the first engagement cone and second, second driven gear empty set to be arranged on the 3rd driven gear and often to engage with the second driving gear, the second engagement cone on second driven gear is positioned at the side of the 3rd engagement cone, the engaging sleeve key with internal messing cone is connected on toothholder and also can moves axially, the groove for dodging the 3rd engagement cone is provided with in engaging sleeve, the shift fork moved axially for stirring engaging sleeve is arranged in the fork slot of engaging sleeve outer ring, shift fork is stirred engaging sleeve and internal messing is bored engage with first respectively and bore, power passes on output shaft by the second engagement cone and the 3rd engagement cone engagement.
Gearbox three class gear shift structure of the present utility model, to each driving gear of input shaft be arranged on and be arranged on driven gear corresponding on output shaft and often engage, first and the 3rd driven gear empty set be arranged on output shaft, and empty set is arranged on the 3rd driven gear on second driven gear, toothholder to be connected on output shaft and between the first engagement cone with the second engagement cone, when gear shift, engaging sleeve is driven to move axially along toothholder by shift fork, the internal messing of engaging sleeve cone is engaged with first respectively bore, power passes on output shaft by the second engagement cone and the 3rd engagement cone engagement, and realize three gear shifts, the utility model compact structure, the impact that elimination sliding gear gear selecting is brought and noise, reduce the axial dimension of gearbox.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is further described.
Fig. 1 is the schematic diagram of the utility model wheeled tractor gearbox three class gear shift structure.
Wherein: 1-gear housing, 2-bearing, the 3-the first driving gear, 4-input shaft, the 5-the second driving gear, the 6-the three driving gear, 7-shift fork, the 8-the three driven gear, 8-1-three engages cone, 9-the second driven gear, 9-1-the second engages cone, 10-needle bearing, 11-output shaft, 12-toothholder, 13-engaging sleeve, 3-1-groove, the 14-the first driven gear, 14-1-the first engages cone.
Embodiment
As shown in Figure 1, wheeled tractor gearbox three class gear shift structure of the present utility model, comprise and be arranged on input shaft 4 on gear housing 1 and output shaft 11 by bearing 2, input shaft 4 and output shaft 11 are arranged on corresponding casing by the bearing of different model, input shaft 4 is provided with successively the first driving gear 3, second driving gear 5 and the 3rd driving gear 6, output shaft 11 is provided with the first corresponding driven gear 14, second driven gear 9 and the 3rd driven gear 8, first driven gear 14 and the second driven gear 9 empty set to be arranged on output shaft 11 and correspondingly respectively often to engage with the first driving gear 3 and the 3rd driving gear 6, make the first driven gear 14 and the second driven gear 9 be bearing in output shaft 11 and can relatively rotate and not transferring power.
As shown in Figure 1, first driven gear 14 of the present utility model and the 3rd driven gear 8 are arranged on output shaft 11 by needle bearing 10 or axle sleeve, first driven gear 14 has the first engagement cone 14-1, first engagement cone 14-1 welding or key are connected on the first driven gear 14, 3rd driven gear 8 has the 3rd engagement cone 8-1, same 3rd engagement cone 8-1 welding or key are connected on the 3rd driven gear 8, toothholder 12 is connected to output shaft 11 and bores between 9-1 in the first engagement cone 14-1 and second engagement, toothholder 12 is connected on output shaft 11 by key, by moving axially of engaging sleeve 13, different for third gear speed ratio is delivered on output shaft 11.
As shown in Figure 1, the utility model second driven gear 9 empty set to be arranged on the 3rd driven gear 8 and often to engage with the second driving gear 5, the second engagement cone 9-1 on second driven gear 9 is positioned at the side of the 3rd engagement cone 8-1, engaging sleeve 13 key with internal messing cone is connected on toothholder 12 and also can moves axially, the groove 13-1 for dodging the 3rd engagement cone 8-1 is provided with in engaging sleeve 13, and the length of this groove 13-1 is greater than the length of the 3rd engagement cone 8-1 and is arranged on the middle part of engaging sleeve 13, the shift fork 7 moved axially for stirring engaging sleeve 13 is arranged in the fork slot of engaging sleeve 13 outer ring, shift fork 7 is stirred engaging sleeve 13 and internal messing is bored engage with first respectively and bore 14-1, power passes on output shaft 11 by the second engagement cone 9-1 and the 3rd engagement cone 8-1 engagement, to be engaged with first by internal messing on engaging sleeve 13 cone and bore 14-1 and engage, or the internal messing cone on engaging sleeve 13 to engage with second and bores 9-1 and engage, or the internal messing cone on engaging sleeve 13 to engage with the 3rd and bores 8-1 and engage, output shaft 11 is made to export the power of different speed ratio.
As shown in Figure 1, during gear shift, stir engaging sleeve 13 its internal messing is bored to engage with first to bore 14-1 and engage by shift fork 7, power is delivered on output shaft 11 through the first driving gear 3, first driven gear 14 and engaging sleeve 13 and toothholder 12; Stir engaging sleeve 13 when shift fork 7 its internal messing to be bored to engage with second to bore 9-1 and engage, now, groove 13-1 in engaging sleeve 13 is positioned at the 3rd engagement cone 8-1 place, 3rd engagement cone 8-1 is not connected with engaging sleeve 13, now, power is delivered on output shaft 11 through the second driving gear 5, second driven gear 9 and engaging sleeve 13 and toothholder 12; When shift fork 7 stir engaging sleeve 13 its internal messing is bored to engage with the 3rd to bore 8-1 engage time, power is delivered on output shaft 11 through the 3rd driving gear 6, the 3rd driven gear 8 and engaging sleeve 13 and toothholder 12, thus realizes three class gear shift.
Claims (5)
1. a wheeled tractor gearbox three class gear shift structure, comprise and be arranged on input shaft (4) on gear housing (1) and output shaft (11) by bearing (2), described input shaft (4) is provided with the first driving gear (3) successively, second driving gear (5) and the 3rd driving gear (6), described output shaft (11) is provided with corresponding the first driven gear (14), second driven gear (9) and the 3rd driven gear (8), it is characterized in that: described the first driven gear (14) and the second driven gear (9) empty set are arranged on output shaft (11) and go up and distinguish and corresponding often to engage with the first driving gear (3) and the 3rd driving gear (6), first driven gear (14) has the first engagement cone (14-1), 3rd driven gear (8) has the 3rd engagement cone (8-1), toothholder (12) is connected to output shaft (11) and is positioned between the first engagement cone (14-1) and the second engagement cone (9-1), second driven gear (9) empty set is arranged on the 3rd driven gear (8) and goes up and often engage with the second driving gear (5), the second engagement cone (9-1) on second driven gear (9) is positioned at the side of the 3rd engagement cone (8-1), engaging sleeve (13) key with internal messing cone is connected to toothholder (12) and above also can moves axially, the groove (13-1) for dodging the 3rd engagement cone (8-1) is provided with in engaging sleeve (13), the shift fork (7) moved axially for stirring engaging sleeve (13) is arranged in the fork slot of engaging sleeve (13) outer ring, shift fork (7) is stirred engaging sleeve (13) and internal messing is bored engage with first respectively and bore (14-1), power passes on output shaft (11) by the second engagement cone (9-1) and the 3rd engagement cone (8-1) engagement.
2. wheeled tractor gearbox three class gear shift structure according to claim 1, is characterized in that: described the first driven gear (14) and the 3rd driven gear (8) are arranged on output shaft (11) by needle bearing (10) or axle sleeve.
3. wheeled tractor gearbox three class gear shift structure according to claim 1, is characterized in that: described the second driven gear (9) by needle bearing (10) or sleeve supporting on the 3rd driven gear (8).
4. wheeled tractor gearbox three class gear shift structure according to claim 1, is characterized in that: the first described engagement cone (14-1) welding or key are connected on the first driven gear (14).
5. wheeled tractor gearbox three class gear shift structure according to claim 1, is characterized in that: the 3rd described engagement cone (8-1) welding or key are connected on the 3rd driven gear (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520962961.0U CN205155101U (en) | 2015-11-26 | 2015-11-26 | Wheeled tractor gearbox third gear variable speed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520962961.0U CN205155101U (en) | 2015-11-26 | 2015-11-26 | Wheeled tractor gearbox third gear variable speed structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205155101U true CN205155101U (en) | 2016-04-13 |
Family
ID=55690795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520962961.0U Active CN205155101U (en) | 2015-11-26 | 2015-11-26 | Wheeled tractor gearbox third gear variable speed structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205155101U (en) |
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2015
- 2015-11-26 CN CN201520962961.0U patent/CN205155101U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |