CN205155049U - Wheeled tractor gearbox no. 3 keeps off variable speed structure - Google Patents
Wheeled tractor gearbox no. 3 keeps off variable speed structure Download PDFInfo
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- CN205155049U CN205155049U CN201520966126.4U CN201520966126U CN205155049U CN 205155049 U CN205155049 U CN 205155049U CN 201520966126 U CN201520966126 U CN 201520966126U CN 205155049 U CN205155049 U CN 205155049U
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Abstract
The utility model relates to a wheeled tractor gearbox no. 3 keeps off variable speed structure, a driven gear and the 3rd driven gear suit often mesh on the output shaft and with the first driving gear and the third driving gear that correspond from each, the toothholder connect the output shaft and lie in a driven gear and the 3rd driven gear between, the 2nd driven gear passes through the bearing supporting and often meshes on a driven gear and with the second driving gear, the meshing cover key -type connection that has the shift fork groove can axial displacement on the toothholder, meshing cover hole is bored one side towards the third meshing and is equipped with the inner gearing awl, the first meshing of meshing cover periphery orientation awl one side is equipped with the external toothing awl, and be equipped with the recess in the meshing cover, the shift fork is stirred the meshing cover and is made inner gearing awl and the meshing of second meshing awl, external toothing awl respectively with first meshing awl and third meshing awl mesh pass to the output shaft with power on. The utility model discloses it is rational in infrastructure, can eliminate the selection of slip gear and keep off impact and the noise that brings, and can reduce the axial dimensions of gearbox.
Description
Technical field
The utility model relates to a kind of wheeled tractor gearbox three and keeps off speed changing structure, belongs to wheeled tractor transmission technology field.
Background technique
Two kinds of technological schemes are adopted usually for tractor three shift transmission.A kind of scheme is placed on reversing gear in auxiliary transmission, and goes into 4 speed, adopt two engaging sleeves or synchronizer to carry out block 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 block selecting of engaging sleeve in auxiliary transmission, and namely, gear adopts sliding gear, and two ends adopt engaging sleeve.This two kinds of speed changing structures, when middle gear, namely adopt sliding gear block selecting, and resistance of putting into gear is comparatively large, and impact obviously, noise is larger.In addition, above-mentioned speed changing structure easily produces phenomenon of trip stopping, and needs to take anti-measure of trip stopping, 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 block selecting brings, and the wheeled tractor gearbox three that can reduce the axial dimension of gearbox keeps off speed changing structure.
The utility model is the technological scheme achieved the above object: a kind of wheeled tractor gearbox three keeps off speed changing 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 3rd driven gear to be sleeved on output shaft and often to engage with from each the first corresponding driving gear and the 3rd driving gear, first driven gear end has the first engagement cone, 3rd driven gear end has the 3rd engagement cone, toothholder is connected to output shaft and between the first driven gear and the 3rd driven gear, the second described driven gear to be bearing on the first driven gear by bearing and often to engage with the second driving gear, the second internal messing cone in second driven gear axis hole is positioned at the inner side of the first engagement cone, engaging sleeve key with fork slot is connected on toothholder and also can moves axially, engaging sleeve endoporus is provided with internal messing cone towards the 3rd engagement cone side, engaging sleeve periphery is provided with towards the first engagement cone side and bores the outer gearing of engaging with the second internal messing and bore, and be provided with in engaging sleeve and dodge when outer gearing cone is bored engage with the second internal messing the groove that the first engagement bores, engaging sleeve stirred by shift fork makes internal messing bore to engage to bore with second and engage, outer gearing cone engages with first respectively to be bored and the 3rd engages to bore to engage and passed on output shaft by power.
Gearbox three of the present utility model keeps off speed changing structure, 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 bearing on output shaft, second driven gear is installed on the first driven gear by bearing, toothholder to be connected on output shaft between the first driven gear and the 3rd driven gear, because the engaging sleeve be connected on toothholder is provided with outer gearing cone and internal messing cone, engaging sleeve is arranged between the first engagement cone and the 3rd engagement cone, engaging sleeve is driven to move axially along on toothholder by shift fork, the internal messing of engaging sleeve is bored engage with first respectively to bore and the 3rd engage to bore and engage, outer gearing cone is bored with the second internal messing and is engaged, power is passed on output shaft and realize three gear gearshifts.The utility model compact structure, the impact brought when eliminating sliding gear block selecting and noise, can 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 that the utility model wheeled tractor gearbox three keeps off speed changing structure.
Wherein: 1-gear housing, 2-bearing, the 3-the first driving gear, 4-the second driving gear, 5-input shaft, the 6-the second driven gear, 6-1-the second internal messing is bored, 7-engaging sleeve, 7-1-outer gearing cone, 7-2-groove, 7-3-fork slot, 7-4-internal messing cone, the 8-the three driving gear, 9-output shaft, 10-the first driven gear, 10-1-the first engages cone, 11-needle bearing, 12-deep groove ball bearing, 13-hole back-up ring, 14-shaft block ring, 15-toothholder, 16-the three driven gear, 16-1-three engages cone.
Embodiment
As shown in Figure 1, wheeled tractor gearbox three of the present utility model keeps off speed changing structure, comprise and be arranged on input shaft 5 on gear housing 1 and output shaft 9 by bearing 2, this input shaft 5 is provided with successively the first driving gear 3, second driving gear 4 and the 3rd driving gear 8, and output shaft 9 is provided with the first corresponding driven gear 10, second driven gear 6 and the 3rd driven gear 16, first driven gear 10 and the 3rd driven gear 16 to be sleeved on output shaft 9 and often to engage with from each the first corresponding driving gear 3 and the 3rd driving gear 8, first driven gear 10 and the 3rd driven gear 16 by needle bearing 11 or sleeve supporting at output shaft 9, first driven gear 10 and the 3rd driven gear 16 are rotated and not transferring power.
As shown in Figure 1, the utility model first driven gear 10 end has the first engagement cone 10-1, 3rd driven gear 16 end has the 3rd engagement cone 16-1, first engagement cone 10-1 welding or key are connected on the first driven gear 10, same 3rd engagement cone 16-1 also can weld or key is connected on the 3rd driven gear 16, toothholder 15 is connected to output shaft 9 and between the first driven gear 10 and the 3rd driven gear 16, toothholder 15 is connected on output shaft 9 by key, moved axially by the engaging sleeve 7 be arranged on toothholder 15 and the different speed ratio of three gears is delivered on output shaft 9.
As shown in Figure 1, the utility model second driven gear 6 to be bearing on the first driven gear 10 by bearing and often to engage with the second driving gear 4, second driven gear 6 is bearing on the first driven gear 10 by two deep groove ball bearings 12, and the inner ring of a deep groove ball bearing 12 withstands on the first driven gear 10, the inner ring of another deep groove ball bearing 12 is connected on the first driven gear 10 by shaft block ring 14, the hole back-up ring 13 be connected on the second driven gear 6 axis hole is arranged between the outer ring of two deep groove ball bearings 12, the second internal messing cone 6-1 in second driven gear 6 axis hole is positioned at the inner side of the first engagement cone 10-1, engaging sleeve 7 key with fork slot 7-3 is connected on toothholder 15 and also can moves axially, engaging sleeve 7 endoporus is provided with internal messing cone 7-4 towards the 3rd engagement cone 16-1 side, internal messing cone 7-4 engages with first respectively and bores 10-1 and the 3rd and engage and bore 16-1 and engage, engaging sleeve 7 periphery is provided with towards the first engagement cone 10-1 side to bore the outer gearing that 6-1 engages and bores 7-1 with the second internal messing, and be provided with in engaging sleeve 7 to bore when 6-1 engages with the second internal messing at outer gearing cone 7-1 and dodge the groove 7-2 that 10-1 is bored in the first engagement, shift fork is stirred engaging sleeve 7 and is made internal messing bore 7-4 to engage to bore with second and engage, outer gearing cone 7-1 engages with first respectively and bores 10-1 and the 3rd and engage and bore 16-1 and engage, power is passed on output shaft 9.
As shown in Figure 1, during gearshift, when shift fork stir engaging sleeve 7 make its internal messing bore 7-4 to engage with first bore 10-1 engage time, power is through the first driving gear 3 and the first driven gear 10 and be delivered on output shaft 9 by toothholder 15; When shift fork stir engaging sleeve 7 make its outer gearing bore 7-1 and the second internal messing bore 6-1 engage time, now, groove 7-2 in engaging sleeve 7 is dodged in the first engagement cone 10-1, and power is delivered on output shaft 9 by engaging sleeve 7 and toothholder 15 after the second driving gear 4 and the second driven gear 6; When shift fork stir engaging sleeve 7 make its internal messing bore 7-4 to engage with the 3rd bore 16-1 engage time, power is delivered on output shaft 9 after the 3rd driving gear 8, the 3rd driven gear 16 and engaging sleeve 7 and tooth overlap, thus realizes three gear speed changes.
Claims (5)
1. a wheeled tractor gearbox three keeps off speed changing structure, comprise and be arranged on input shaft (5) on gear housing (1) and output shaft (9) by bearing (2), described input shaft (5) is provided with the first driving gear (3) successively, second driving gear (4) and the 3rd driving gear (8), described output shaft (9) is provided with corresponding the first driven gear (10), second driven gear (6) and the 3rd driven gear (16), it is characterized in that: described the first driven gear (10) and the 3rd driven gear (16) are sleeved on output shaft (9) and go up and often engage with from each corresponding the first driving gear (3) and the 3rd driving gear (8), first driven gear (10) end has the first engagement cone (10-1), 3rd driven gear (16) end has the 3rd engagement cone (16-1), toothholder (15) is connected to output shaft (9) and is positioned between the first driven gear (10) and the 3rd driven gear (16), described the second driven gear (6) is bearing in the first driven gear (10) by bearing and goes up and often engage with the second driving gear (4), the second internal messing cone (6-1) in second driven gear (6) axis hole is positioned at the inner side of the first engagement cone (10-1), engaging sleeve (7) key with fork slot (7-3) is connected to toothholder (15) and above also can moves axially, engaging sleeve (7) endoporus is provided with internal messing cone (7-4) towards the 3rd engagement cone (16-1) side, engaging sleeve (7) periphery is provided with towards first engagement cone (10-1) side to bore the outer gearing that (6-1) engage and bores (7-1) with the second internal messing, and be provided with in engaging sleeve (7) to bore when (6-1) engages with the second internal messing in outer gearing cone (7-1) and dodge the groove (7-2) that (10-1) is bored in the first engagement, shift fork is stirred engaging sleeve (7) and is made internal messing bore (7-4) to engage to bore with second and engage, outer gearing cone (7-1) is engaged with first respectively and is bored (10-1) and the 3rd and engage and bore (16-1) and engage and passed on output shaft (9) by power.
2. wheeled tractor gearbox three according to claim 1 keeps off speed changing structure, it is characterized in that: described the first driven gear (10) and the 3rd driven gear (16) by needle bearing (11) or sleeve supporting in output shaft (9).
3. wheeled tractor gearbox three according to claim 1 keeps off speed changing structure, it is characterized in that: described the second driven gear (6) is bearing on the first driven gear (10) by two deep groove ball bearings (12), and the inner ring of a deep groove ball bearing (12) withstands on the first driven gear (10), the inner ring of another deep groove ball bearing (12) is connected on the first driven gear (10) by shaft block ring (14), the hole back-up ring (13) be connected on the second driven gear (6) axis hole is arranged between the outer ring of two deep groove ball bearings (12).
4. wheeled tractor gearbox three according to claim 1 keeps off speed changing structure, it is characterized in that: the first described engagement cone (10-1) welding or key are connected on the first driven gear (10).
5. wheeled tractor gearbox three according to claim 1 keeps off speed changing structure, it is characterized in that: the 3rd described engagement cone (16-1) welding or key are connected on the 3rd driven gear (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520966126.4U CN205155049U (en) | 2015-11-26 | 2015-11-26 | Wheeled tractor gearbox no. 3 keeps off variable speed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520966126.4U CN205155049U (en) | 2015-11-26 | 2015-11-26 | Wheeled tractor gearbox no. 3 keeps off variable speed structure |
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| Publication Number | Publication Date |
|---|---|
| CN205155049U true CN205155049U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520966126.4U Active CN205155049U (en) | 2015-11-26 | 2015-11-26 | Wheeled tractor gearbox no. 3 keeps off variable speed structure |
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| CN (1) | CN205155049U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641120A (en) * | 2017-02-15 | 2017-05-10 | 苏州萨伯工业设计有限公司 | Three-gear variable-speed transmission method |
| CN107630984A (en) * | 2017-09-26 | 2018-01-26 | 力源液压（苏州）有限公司 | A kind of change-speed system for tractor |
| CN108518456A (en) * | 2018-03-30 | 2018-09-11 | 临沂万和精工机械有限公司 | A kind of agricultural equipment harvester for peanut special cylinder transmission case |
-
2015
- 2015-11-26 CN CN201520966126.4U patent/CN205155049U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641120A (en) * | 2017-02-15 | 2017-05-10 | 苏州萨伯工业设计有限公司 | Three-gear variable-speed transmission method |
| CN107630984A (en) * | 2017-09-26 | 2018-01-26 | 力源液压（苏州）有限公司 | A kind of change-speed system for tractor |
| CN108518456A (en) * | 2018-03-30 | 2018-09-11 | 临沂万和精工机械有限公司 | A kind of agricultural equipment harvester for peanut special cylinder transmission case |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |