CN204175905U - Tractor hydraulic infinitely variable speed transmission - Google Patents
Tractor hydraulic infinitely variable speed transmission Download PDFInfo
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- CN204175905U CN204175905U CN201420583535.1U CN201420583535U CN204175905U CN 204175905 U CN204175905 U CN 204175905U CN 201420583535 U CN201420583535 U CN 201420583535U CN 204175905 U CN204175905 U CN 204175905U
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- variable displacement
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- output shaft
- displacement motor
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Abstract
The utility model discloses a kind of tractor hydraulic infinitely variable speed transmission, comprise driving mechanism and stepless speed changing mechanism, driving mechanism comprises power input shaft, walking output shaft, working output shaft and many grades of gear pairs, many grades of driving gear intervals are fixed on working output shaft, and many grades of driven gears are set on walking output shaft; Stepless speed changing mechanism comprises variable displacement pump, variable displacement pump driving gear wheel set, variable displacement motor and variable displacement motor output gear wheel set, the gear of variable displacement pump driving gear wheel set is separately fixed on power input shaft one end and variable displacement pump input shaft, variable displacement pump output terminal is connected with variable displacement motor input end, and the gear of variable displacement motor output gear wheel set is separately fixed on variable displacement motor output shaft and working output shaft one end.The flow of the utility model Moderator Variable pump can realize variable displacement motor output speed from zero to the stepless conversion of required rotating speed, and the flow direction of controlled variable pump high pressure oil can make variable displacement motor reverse thus realize tractor reverse gear to retreat.
Description
Technical field
The utility model relates to a kind of tractor variable speed drive, the tractor variable speed drive that especially a kind of rate conversion is level and smooth, belongs to agricultural machinery technological field.
Background technique
Figure 1 shows that existing tractor machines variable transmission mechanism, diesel engine output shaft drives power input shaft 1 to rotate, the driving gear 11 being fixed on power input shaft 1 one end also rotates thereupon, the driven gear 12 engaged with driving gear 11 drives working output shaft 2 to rotate, thus drive one grade of driving gear 21 on it, second gear driving gear 22 and third speed drive gear 23 rotate, one grade of driving gear 21, second gear driving gear 22 and third speed drive gear 23 drive corresponding first speed driven gear 31 respectively, second gear driven gear 32 and third gear driven gear 33 rotate and realize tractor advance speed change.During reverse gear, the power of diesel engine output shaft passes to the reverse gear driven gear 43 engaged with reverse idler gear 42 through intermeshing reverse driving gear 41 and reverse idler gear 42, thus realizes tractor reverse gear retrogressing.The each shelves speed of above-mentioned mechanical variable speed device is step change, rate conversion is unsmooth, and each shelves minimum speed restricts by diesel engine minimum speed, the speed that cannot realize is from zero to required rotating speed speed change, in addition, due to tractor work under bad environment, frequent reversing is sometimes needed, cause reverse idler gear 42 in reverse gear structure to be very easily damaged, reverse idler gear 12 is short for working life.
Model utility content
The purpose of this utility model is to provide that a kind of structure is simple, rate conversion is level and smooth, can realize the tractor hydraulic infinitely variable speed gearing of speed from zero speed change.
The utility model is achieved by the following technical programs:
A kind of tractor hydraulic infinitely variable speed transmission, comprise driving mechanism and stepless speed changing mechanism, described driving mechanism comprises power input shaft, the walking output shaft coaxial with power input shaft, the working output shaft being set in parallel in output shaft side of walking and many grades of gear pairs, many grades of driving gears are intervally fixed in the middle part of working output shaft, and the many grades of driven gears engaged with corresponding many grades of driving gears are set in walks on output shaft; Described stepless speed changing mechanism comprises variable displacement pump, variable displacement pump driving gear wheel set, variable displacement motor and variable displacement motor output gear wheel set, the gear of variable displacement pump driving gear wheel set is separately fixed on variable displacement pump line shaft and power input shaft one end, variable displacement pump output terminal is connected with variable displacement motor input end by hydraulic control circuit, and the gear of variable displacement motor output gear wheel set is separately fixed on variable displacement motor output shaft and working output shaft one end.
The purpose of this utility model can also be realized further by following technical measures.
Aforesaid tractor hydraulic infinitely variable speed transmission, wherein said variable displacement pump driving gear wheel set comprises input driving gear, intermediate gear and input driven gear, three engages successively between two, input driving gear is fixed on power input shaft one end, and input driven gear is fixed on variable displacement pump input shaft.
Aforesaid tractor hydraulic infinitely variable speed transmission, wherein said variable displacement motor output gear wheel set comprises output driving gear, transition gear and output driven gear, three engages successively between two, exporting driving gear is fixed on variable displacement motor output shaft, exports driven gear and is fixed on working output shaft one end.
Aforesaid tractor hydraulic infinitely variable speed transmission, wherein said variable displacement pump is axial plunger type variable capacity pump.
Aforesaid tractor hydraulic infinitely variable speed transmission, wherein said variable displacement motor is axial piston variable displacement motor.
Hydraulic transmission combines with mechanical transmission by the utility model, and structure is simple, and transmission efficiency is high, and tractor operates steadily.Variable displacement pump and variable displacement motor is set up in tractor variable ratio drive system, cancel the reverse gear structure in existing machinery variable transmission mechanism, simplify mechanical transmission route, move many grades of gear pairs by variable displacement motor output gear subband and rotate, thus realize tractor advance speed change; The flow of Moderator Variable pump can realize variable displacement motor output speed from zero to the stepless conversion of required rotating speed, thus realize stepless change, and rate conversion is level and smooth, the high-pressure oil flow being changed entering variable motor by hydraulic control circuit is reversed to making variable displacement motor, thus realizes tractor reverse gear retrogressing.
Advantage and disadvantage of the present utility model, by for illustration and explanation for the non-limitative illustration passing through preferred embodiment below, these embodiments, only provide as an example with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing tractor machines variable transmission mechanism;
Fig. 2 is structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 2, the utility model comprises driving mechanism and stepless speed changing mechanism, driving mechanism comprises power input shaft 1, the walking output shaft 3 coaxial with power input shaft 1 and the working output shaft 2 being set in parallel in output shaft 3 side of walking, one grade of driving gear 21, second gear driving gear 22 and third speed drive gear 23 are intervally fixed in the middle part of working output shaft 2, respectively with one grade of driving gear 21, the first speed driven gear 31 that second gear driving gear 22 and third speed drive gear 23 engage, second gear driven gear 32 and third gear driven gear 33 are sleeved on walking output shaft 3 successively, engagement seats 34 on the left of first speed driven gear 31 is provided with the first engaging sleeve 341, engagement seats 35 between second gear driven gear 32 and third gear driven gear 33 is provided with the second engaging sleeve 351.
Stepless speed changing mechanism comprises variable displacement pump 5, variable displacement pump driving gear wheel set 6, variable displacement motor 7 and variable displacement motor output gear wheel set 8, and variable displacement pump 5 is arranged on outside pto＝power take-off 1; Variable displacement pump driving gear wheel set 6 comprises input driving gear 61, intermediate gear 62 and input driven gear 63, and three engages successively between two, and input driving gear 61 is fixed on power input shaft 1 right-hand member, and input driven gear 63 is fixed on variable displacement pump input shaft 51.Variable displacement motor 7 is arranged on outside working output shaft 2, variable displacement pump 5 output terminal is connected with variable displacement motor 7 input end by hydraulic control circuit, variable displacement motor output gear wheel set 8 comprises output driving gear 81, transition gear 82 and exports driven gear 83, three is two engagements successively, exporting driving gear 81 is fixed on the output shaft 71 of variable displacement motor 7, exports driven gear 83 and is fixed on working output shaft 2 left end; Variable displacement pump 5 is axial plunger type variable capacity pump, and variable displacement motor 7 is axial piston variable displacement motor.
During tractor shift speed change, from the power of diesel engine through intermeshing input driving gear 61, intermediate gear 62 and input driven gear 63 drive variable displacement pump 5 to rotate, variable displacement pump 5 output terminal exports high pressure oil through oil hydraulic circuit and drives variable displacement motor 7, variable displacement motor 7 drives output driving gear 81 to rotate, output driven gear 83 is driven to rotate through intermeshing transition gear 82 again, thus drive one grade of driving gear 21 on working output shaft 2, second gear driving gear 22 and third speed drive gear 23 rotate, first speed driven gear 31, second gear driven gear 32 and third gear driven gear 33 also rotate thereupon, when engaging sleeve 341 or engaging sleeve 351 engage with respective notch driven gear, namely tractor advances by required gear speed.The high-pressure oil flow being changed entering variable motor by hydraulic control circuit is reversed to making variable displacement motor, just can realize tractor reverse gear and retreat.
In addition to the implementation, the utility model can also have other mode of executions, and all employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (5)
1. a tractor hydraulic infinitely variable speed transmission, comprise driving mechanism and stepless speed changing mechanism, described driving mechanism comprises power input shaft, the walking output shaft coaxial with power input shaft, the working output shaft being set in parallel in output shaft side of walking and many grades of gear pairs, many grades of driving gears are intervally fixed in the middle part of working output shaft, and the many grades of driven gears engaged with corresponding many grades of driving gears are set in walks on output shaft; It is characterized in that: described stepless speed changing mechanism comprises variable displacement pump, variable displacement pump driving gear wheel set, variable displacement motor and variable displacement motor output gear wheel set, the gear of variable displacement pump driving gear wheel set is separately fixed on variable displacement pump line shaft and power input shaft one end, variable displacement pump output terminal is connected with variable displacement motor input end by hydraulic control circuit, and the gear of variable displacement motor output gear wheel set is separately fixed on variable displacement motor output shaft and working output shaft one end.
2. tractor hydraulic infinitely variable speed transmission as claimed in claim 1, it is characterized in that: described variable displacement pump driving gear wheel set comprises input driving gear, intermediate gear and input driven gear, three engages successively between two, input driving gear is fixed on power input shaft one end, and input driven gear is fixed on variable displacement pump input shaft.
3. tractor hydraulic infinitely variable speed transmission as claimed in claim 1, it is characterized in that: described variable displacement motor output gear wheel set comprises output driving gear, transition gear and output driven gear, three engages successively between two, exporting driving gear is fixed on variable displacement motor output shaft, exports driven gear and is fixed on working output shaft one end.
4. tractor hydraulic infinitely variable speed transmission as claimed in claim 1, is characterized in that: described variable displacement pump is axial plunger type variable capacity pump.
5. tractor hydraulic infinitely variable speed transmission as claimed in claim 1, is characterized in that: described variable displacement motor is axial piston variable displacement motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420583535.1U CN204175905U (en) | 2014-10-11 | 2014-10-11 | Tractor hydraulic infinitely variable speed transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420583535.1U CN204175905U (en) | 2014-10-11 | 2014-10-11 | Tractor hydraulic infinitely variable speed transmission |
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| Publication Number | Publication Date |
|---|---|
| CN204175905U true CN204175905U (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420583535.1U Active CN204175905U (en) | 2014-10-11 | 2014-10-11 | Tractor hydraulic infinitely variable speed transmission |
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| CN (1) | CN204175905U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013652A (en) * | 2016-01-28 | 2017-08-04 | 铃木株式会社 | Stepless speed change device |
| CN107013653A (en) * | 2016-01-28 | 2017-08-04 | 铃木株式会社 | Stepless speed change device |
| CN107830126A (en) * | 2017-11-29 | 2018-03-23 | 滁州悦达实业有限公司 | Electrichydraulic control PTO |
| CN109139880A (en) * | 2018-09-27 | 2019-01-04 | 建科机械（天津）股份有限公司 | A kind of multi gear speed change drawbench |
-
2014
- 2014-10-11 CN CN201420583535.1U patent/CN204175905U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013652A (en) * | 2016-01-28 | 2017-08-04 | 铃木株式会社 | Stepless speed change device |
| CN107013653A (en) * | 2016-01-28 | 2017-08-04 | 铃木株式会社 | Stepless speed change device |
| CN107013653B (en) * | 2016-01-28 | 2019-04-19 | 铃木株式会社 | Stepless speed change device |
| CN107013652B (en) * | 2016-01-28 | 2019-04-19 | 铃木株式会社 | Stepless speed change device |
| CN107830126A (en) * | 2017-11-29 | 2018-03-23 | 滁州悦达实业有限公司 | Electrichydraulic control PTO |
| CN107830126B (en) * | 2017-11-29 | 2023-12-05 | 滁州悦达实业有限公司 | Electrohydraulic control power output device |
| CN109139880A (en) * | 2018-09-27 | 2019-01-04 | 建科机械（天津）股份有限公司 | A kind of multi gear speed change drawbench |
| CN109139880B (en) * | 2018-09-27 | 2024-02-27 | 建科机械（天津）股份有限公司 | Multi-gear variable-speed drawing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 212311 Zhenjiang city of Jiangsu province Danyang City Picheng fuwode Industrial Park Patentee after: Jiangsu wode Agricultural Machinery Co., Ltd Address before: 212311 Zhenjiang city of Jiangsu province Danyang City Picheng fuwode Industrial Park Patentee before: JIANGSU WORLD AGRICULTURAL MACHINERY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |