CN105605183A - Mechanical-hydraulic combined drive continuously variable transmission for high-horsepower tractor - Google Patents
Mechanical-hydraulic combined drive continuously variable transmission for high-horsepower tractor Download PDFInfo
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- CN105605183A CN105605183A CN201610136427.3A CN201610136427A CN105605183A CN 105605183 A CN105605183 A CN 105605183A CN 201610136427 A CN201610136427 A CN 201610136427A CN 105605183 A CN105605183 A CN 105605183A
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- gear
- shaft
- power
- hydraulic
- clutch
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a hydraulic mechanical continuously variable transmission, comprising a mechanical transmission system and a hydraulic transmission system. The hydraulic transmission system comprises a variable displacement pump, a constant displacement motor and a hydraulic flow input shaft, the constant displacement motor is connected with the variable displacement pump through an oil pipe, the mechanical transmission system comprises a PTO (power takeoff) input shaft, a mechanical flow input shaft, an output shaft and a planet gear mechanism; one end of the PTO output shaft is connected with an engine, the PTO output shaft is connected with a pump input shaft and the mechanical flow input shaft through gear pair meshing, the mechanical flow input shaft is provided with a first cutch and a first planet row, the hydraulic flow input shaft is provided with a second clutch and a second planet row, the first planet row is connected with the second planet row, and the output shaft is provided with a third clutch, a fourth clutch, a fifth clutch and a sixth clutch. This transmission may shift gears automatically with uninterrupted power during shifting and enables a tractor to stably run.
Description
Technical field
The present invention relates to a kind of gearbox, be specifically related to a kind of machine liquid association that is applicable to the dual-purpose 100 horsepowers of tractors in floods and droughts field and driveInfinitely variable transmission, belongs to vehicle system dynamics and control technology field.
Background technology
Tractor is important agricultural production machinery, has more work gear, and traditional tractor shift process is completeBorn by driver, not only labour intensity is large, and speed changes the little and speed of scope and can only change by phase step type, and driver is in gearshiftTime the sense of jolting, and be difficult for realizing gearbox and mate with optimal fuel economy or the dynamic property of engine, thus waste energySource.
Summary of the invention
The object of the invention is for overcoming above-mentioned the deficiencies in the prior art part, provide one can realize stepless speed regulation with moving simultaneouslyThe hydraulic machinery infinitely variable transmission of the power section of changing (shelves).
The technical scheme that the present invention takes is: a kind of machine liquid for big-powered tractor is assisted and driven buncher, comprises powerInput system, be arranged at mechanical power transmission system and the hydraulic power transmission system on power input system right side and be positioned at machineThe unify power output system of hydraulic power transmission system below of tool PWTN;
Described power input system comprises engine, PTO output shaft, and described PTO output shaft is connected with engine, simultaneously PTODriving pinion is installed on output shaft, and described driving pinion engages with the first transmission gear and the second transmission gear,To start motivation to be delivered to respectively mechanical power transmission system and hydraulic power transmission system,
Described machine power transmission input system comprises mechanical stream power shaft, back shaft one and connects machinery stream power shaft and prop upThe 6th clutch of support axle one, described the 6th clutch negative control tool power drive system power input the second planet rowThe gear ring of planet carrier and the first planet row, is equipped with the second transmission gear on described machinery stream power shaft, and described back shaft one certainlyLeft end is provided with second gear driving gear, the first rolling bearing, reverse driving gear and the second planet row, described back shaft successivelyOne and power output system between be provided with idler shaft, described idler shaft is equipped with idle pulley, described idle pulley connects driving gear and powerThe reverse gear driven gear of output system, travels for reverse gear;
Described hydraulic power transmission system mainly comprises the first transmission gear, pump power shaft, variable pump, fixed displacement motor and liquidBaric flow power shaft, the first described transmission gear is arranged on pump power shaft, and described pump power shaft is coaxially connected with variable pump,Described variable pump is connected with fixed displacement motor by hydraulic oil pipe, and the output of described fixed displacement motor is connected with motor output shaft, instituteStating motor output shaft engages with hydraulic drive pinion on flow of pressurized power shaft by hydraulic drive master gear; Described flow of pressurized is defeatedEnter on axle and be provided with successively one grade of driving gear, the second rolling bearing, third speed drive gear in hydraulic drive pinion left sideWith the first planet row, be provided with Hydraulic Main moving gear and the 5th clutch on hydraulic drive pinion right side, described flow of pressurized inputAxle and power output system are provided with transition axis, and described transition axis left end is equipped with First Transition gear, and right-hand member is equipped with the second transition toothWheel, described First Transition gear is meshed with hydraulic drive master gear, described the second transition gear) and power output systemStarting gear driven gear;
Further, described transition gear comprises the First Transition gear and the second transition gear that are arranged on transition axis, described inFirst Transition gear is connected with Hydraulic Main moving gear is intermeshing, the second transition gear and the intermeshing company of hydraulic pressure driven gearConnect;
Described the first planet toothrow circle is connected with the planet carrier of the second planet row;
Described the first rolling bearing is between second gear driving gear and reverse driving gear, and described the second rolling bearing is positioned at threeBetween shelves driving gear and one grade of driving gear;
Described first clutch, second clutch, the 3rd clutch, four clutches, the 5th clutch and the 6th clutchBe wet clutch;
Described gearbox has three drive shifts and a reverse gear, and its gearratio is respectively i1＝2.012、i2＝1.545、i3＝0.374、iFall＝8.465；
The invention has the beneficial effects as follows: (1) can, according to the automatic adjusting speed ratio of the variation of load torque and travel speed, make to startMachine always works in optimal economic operating point or the best power source operating point in universal characteristic, and then realizes complete machine of tractorGood fuel economy or dynamic property. (2) taking liquid as part power Transfer Medium, transmission system load is greatly alleviated, canEffectively avoid engine because of the overload situation of stopping working to obtain, thus the service life of greatly improving related components. (3) not only canTo realize from the section of moving, and power does not interrupt when the section of changing, thereby tractor is travelled steadily, easy and simple to handle, reduces drivingMember's labour intensity.
Brief description of the drawings
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is power input system structural representation of the present invention
Fig. 3 is hydraulic power transmission system structural representation of the present invention
Fig. 4 is mechanical power transmission system structural representation of the present invention
Fig. 5 is power output system structural representation of the present invention
Wherein:
100 power input systems, 101 engines, 102 driving pinions, 103PTO output shaft;
200 hydraulic power transmission system, 201 first transmission gears, 202 pump power shafts, 203 variable pumps, 204 hydraulic pressureOil pipe, 205 fixed displacement motors, 206 the 5th clutches, 207 flow of pressurized power shafts, 208 motor output shafts, 209 hydraulic pressure passMoving master gear, 210 hydraulic drive pinions, 211 1 grades of driving gears, 212 second rolling bearings, 213 third gear driving toothsWheel, 214 first planet rows, 215 Hydraulic Main moving gears, 216 transition axises, 217 First Transition gears, 218 second transitionGear, 219 first planet toothrow circles;
300 mechanical power transmission systems, 301 machinery stream power shafts, 302 back shafts one, 303 the 6th clutch, 304 theTwo transmission gears, 305 second gear driving gears, 306 first rolling bearings, 307 reverse driving gears, 308 second planetsRow, 309 idler shafts, 310 idle pulleys, 311 second planet row gear rings, 312 second planet row planet carriers;
400 power output systems, 401 output shafts, 402 second gear driven gears, 403 reverse gear driven gears, 404 third gear fromMoving gear, 405 first speed driven gears, 406 starting gear driven gears, 407 three, 409 of back shaft two, 408 back shaftsSupport axle four, 410 back shaft five, 411 back shaft six, 412 second clutches, 413 four clutches, 414 the 3rd clutchesDevice, 415 first clutches;
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of machine liquid is assisted and is driven buncher, and it comprises power input system (100), hydraulic power transmissionSystem (200), mechanical power transmission system (300) and power output system (400), wherein engine directly and PTOOutput shaft (103) connects, and driving pinion (102) is respectively at the first transmission gear (201), the second transmission gear(301) be connected with a joggle, engine power is delivered to hydraulic power transmission system (200) and mechanical power transmission system(300)；
Further enter the hydraulic power of hydraulic power transmission system (200) through hydraulic drive master gear (209) and liquidPress transmission gear (210) to be delivered to flow of pressurized power shaft (207), the hydraulic pressure that is delivered to flow of pressurized power shaft (207) is movingPower is turned left and is delivered to the first planet row (214);
Be delivered to the hydraulic power of flow of pressurized power shaft (207), turn right through Hydraulic Main moving gear (215), First TransitionGear (217), the second transition gear (218), be delivered to the starting gear driven gear (406) of power output system (400),Realize starting;
Because variable pump (203) in hydraulic power transmission system (200) and fixed displacement motor (205) pass through hydraulic oil pipe (204)The circuit system of composition, can pass through regulated variable pump delivery, realizes the continuous variation of hydraulic power output, so hydraulic pressure is movingThe hydraulic power of transmitting in power transmission system (200), has adjustable continually varying feature, so for starting gear,The power of output will be adjustable, change continuously, and output speed will be adjustable, change continuously;
The machine power that is further delivered to mechanical power transmission system (300) is entered through the second transmission gear (301)Enter the second planet row (308);
The hydraulic power that is further delivered to the first planet row (214) is moving with the machinery that is delivered to the second planet row (308)Power, carries out converging of power at the first planet row (214) and the second planet row (308), and the power after converging is delivered to oneShelves driving gear (211), second gear driving gear (305), third speed drive gear (213) and reverse driving gear (307);
Further pass through to control the combination of first clutch (415), can be by the power after converging from one grade of driving gear (211)Be delivered to first speed driven gear (405), realize one grade; Same control second clutch (412) can be by the power after convergingBe delivered to second gear driven gear (402) from second gear driving gear (305), realize second gear; Based on the above-mentioned control to clutchSystem, controls the 3rd clutch (414) so, can realize third gear, controls four clutches (413), can realize reverse gear;
Further because variable pump (203) in hydraulic power transmission system (200) and fixed displacement motor (205) pass through liquidThe circuit system of pressuring oil pipe (204) composition, can pass through regulated variable pump delivery, realizes the continuous change of hydraulic power outputChange, the hydraulic power of transmitting in hydraulic power transmission system (200), has adjustable, continually varying feature, entersThe hydraulic power of the first planet row (214) also has adjustable, continually varying feature, after above-mentioned converging, is delivered to one gradeDriving gear (211), second gear driving gear (305), third speed drive gear (213) and reverse driving gear (307)Converge power and also there is adjustable, continually varying feature, so the power of one grade, second gear, third gear and reverse gear output willAdjust, change continuously, output speed will be adjustable, change continuously;
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (5)
1. infinitely variable transmission drives in the association of the machine liquid for big-powered tractor, it is characterized in that: comprise power input system (100), be arranged at mechanical power transmission system (300) and the hydraulic power transmission system (200) of power input system (100) below and be positioned at mechanical power transmission system (300) and the power output system (400) of hydraulic power transmission system (200) below
Described power input system (100) mainly comprises engine (101), driving pinion (102), PTO output shaft (103), described engine (101) output shaft is coaxially connected with PTO output shaft (103), it is upper that described driving pinion (102) is arranged on PTO output shaft (103), is meshed respectively with the second transmission gear (304) in hydraulic power transmission system (200) first transmission gears (201) and mechanical power transmission system (300);
Described hydraulic power transmission system (200) mainly comprises the first transmission gear (201), pump power shaft (202), variable pump (203), fixed displacement motor (205) and flow of pressurized power shaft (207), the first described transmission gear (201) is arranged on pump power shaft (202), described pump power shaft (202) is coaxially connected with variable pump (203), described variable pump (203) is connected with fixed displacement motor (205) by hydraulic oil pipe (204), the output of described fixed displacement motor (205) is connected with motor output shaft (208), described motor output shaft (208) engages with the hydraulic drive pinion (210) on flow of pressurized power shaft (207) by hydraulic drive master gear (209), described flow of pressurized power shaft (207) is upper is provided with one grade of driving gear (211) successively in hydraulic drive pinion (210) left side, the second rolling bearing (212), third speed drive gear (213) and the first planet row (214), be provided with Hydraulic Main moving gear (215) and the 5th clutch (206) on hydraulic drive pinion (210) right side, between described flow of pressurized power shaft (207) and power output system (400), be provided with transition axis (216), described transition axis (216) left end is equipped with First Transition gear (217), right-hand member is equipped with the second transition gear (218), described First Transition gear (217) is meshed with hydraulic drive master gear (215), the starting gear driven gear (406) of described the second transition gear (218) and power output system (400).
Described mechanical power transmission system (300) mainly comprises machinery stream power shaft (301), the 6th clutch (303) of back shaft one (302) and connection machinery stream power shaft (301) and back shaft one (302), on described machinery stream power shaft (301), the second transmission gear (304) is housed, described back shaft one (302) is provided with second gear driving gear (305) successively from left end, the first rolling bearing (306), reverse driving gear (307) and the second planet row (308), between described back shaft one (302) and power output system (400), be provided with idler shaft (309), described idler shaft (309) is equipped with idle pulley (310), described idle pulley (310) connects the reverse gear driven gear (403) of reverse driving gear (307) and power output system (400).
Described power output system (400) mainly comprises combined output shaft (401), second gear driven gear (402), reverse gear driven gear (403), third gear driven gear (404), first speed driven gear (405) and starting gear driven gear (406), described combined output shaft (401) is by back shaft two (407), back shaft three (408), back shaft four (409), back shaft five (410), five sections of coaxial compositions such as back shaft six (411), between adjacent two back shafts, be provided with successively second clutch (412), four clutches (413), the 3rd clutch (414) and first clutch (415), described second gear driven gear (402) is meshed with second gear driving gear (305), described reverse gear driven gear (403) is meshed with idle pulley (310), described third gear driven gear (404) is meshed with third speed drive gear (213), described first speed driven gear (405) is meshed with one grade of driving gear (211), described starting gear driven gear (406) is meshed with the second transition gear (218).
2. a kind of machine liquid for big-powered tractor according to claim 1 is assisted and is driven infinitely variable transmission, it is characterized in that: the gear ring (311) of described the second planet row (308) connects firmly with back shaft one (302), and the planet carrier (312) of described the second planet row (308) connects firmly mutually with the gear ring (215) of the first planet row (214).
3. a kind of machine liquid for big-powered tractor according to claim 1 is assisted and is driven infinitely variable transmission, it is characterized in that: described first clutch (415), second clutch (412), the 3rd clutch (414), four clutches (413), the 5th clutch (206) and the 6th clutch (303) are wet clutch.
4. a kind of machine liquid for big-powered tractor according to claim 1 and 2 is assisted and is driven infinitely variable transmission, it is characterized in that: described gearbox has three drive shifts and a reverse gear, and its gearratio is respectively i1＝2.012、i2＝1.545、i3＝0.374、iFall＝8.465。
5. assist the method for operating of driving infinitely variable transmission according to a kind of machine liquid for big-powered tractor described in claim 1～4 any one, its feature comprises following step:
Step 1: gear (102) is lived in the transmission of engine (101) on PTO output shaft (103), to hydraulic power transmission system (200) and mechanical power transmission system (300) transferring power;
Step 2: the power of hydraulic power transmission system (200), pass through successively hydraulic drive master gear (209), hydraulic drive pinion (210), flow of pressurized power shaft (207), the 5th clutch (206), First Transition gear (217), transition axis (216), the second transition gear (218), drive starting gear driven gear (406), realize starting;
Step 3: after having started to walk, hydraulic power transmission system (200) and mechanical power transmission system (300), the power transmission with first speed driven gear (405), second gear driving gear (305) and second gear driven gear (402), third speed drive gear (213) and third gear driven gear (404) through one grade of driving gear (211) respectively, realizes the operation of 1 grade, 2 grades, 3 grades;
Step 4: when reversing, hydraulic power transmission system (200) and mechanical power transmission system (300), through the power transmission of back shaft one (302), driving gear (307), idle pulley (310), reverse gear driven gear (403), four clutches (413), are realized car backing operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610136427.3A CN105605183B (en) | 2016-03-08 | 2016-03-08 | Infinitely variable transmission drives in a kind of machine liquid association for big-powered tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610136427.3A CN105605183B (en) | 2016-03-08 | 2016-03-08 | Infinitely variable transmission drives in a kind of machine liquid association for big-powered tractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105605183A true CN105605183A (en) | 2016-05-25 |
| CN105605183B CN105605183B (en) | 2018-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610136427.3A Active CN105605183B (en) | 2016-03-08 | 2016-03-08 | Infinitely variable transmission drives in a kind of machine liquid association for big-powered tractor |
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| CN (1) | CN105605183B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763738A (en) * | 2016-12-26 | 2017-05-31 | 王军辉 | A kind of hydraulic continuously variable transmission |
| CN109058403A (en) * | 2018-08-06 | 2018-12-21 | 陕西法士特齿轮有限责任公司 | A kind of power-diversion stepiess variable drive system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108414A (en) * | 1985-11-23 | 1987-05-27 | 株式会社岛津制作所 | Hydraulic-mechanical speed variator |
| JP2004353690A (en) * | 2003-05-27 | 2004-12-16 | Komatsu Ltd | Hydraulic mechanical transmission |
| CN201246458Y (en) * | 2008-04-22 | 2009-05-27 | 赵宏坚 | Mechanical and hydraulic combined transmission device |
| US20110300984A1 (en) * | 2010-06-02 | 2011-12-08 | Ningbo Surely Meh Co., Ltd. | Continuously variable transmission for a hydraulic mechanism in hybrid cars with recovered power-split energy |
| CN102359567A (en) * | 2011-10-13 | 2012-02-22 | 南京农业大学 | Full-automatic continuously variable transmission of tractor |
| CN205559721U (en) * | 2016-03-08 | 2016-09-07 | 南京农业大学 | A continuously variable transmission drives in quick -witted liquid association for high horse power tractor |
-
2016
- 2016-03-08 CN CN201610136427.3A patent/CN105605183B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108414A (en) * | 1985-11-23 | 1987-05-27 | 株式会社岛津制作所 | Hydraulic-mechanical speed variator |
| JP2004353690A (en) * | 2003-05-27 | 2004-12-16 | Komatsu Ltd | Hydraulic mechanical transmission |
| CN201246458Y (en) * | 2008-04-22 | 2009-05-27 | 赵宏坚 | Mechanical and hydraulic combined transmission device |
| US20110300984A1 (en) * | 2010-06-02 | 2011-12-08 | Ningbo Surely Meh Co., Ltd. | Continuously variable transmission for a hydraulic mechanism in hybrid cars with recovered power-split energy |
| CN102359567A (en) * | 2011-10-13 | 2012-02-22 | 南京农业大学 | Full-automatic continuously variable transmission of tractor |
| CN205559721U (en) * | 2016-03-08 | 2016-09-07 | 南京农业大学 | A continuously variable transmission drives in quick -witted liquid association for high horse power tractor |
Non-Patent Citations (1)
| Title |
|---|
| 田翠云: "液压机械无级变速器的段内控制策略研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763738A (en) * | 2016-12-26 | 2017-05-31 | 王军辉 | A kind of hydraulic continuously variable transmission |
| CN109058403A (en) * | 2018-08-06 | 2018-12-21 | 陕西法士特齿轮有限责任公司 | A kind of power-diversion stepiess variable drive system |
| CN109058403B (en) * | 2018-08-06 | 2024-01-02 | 陕西法士特齿轮有限责任公司 | Power split stepless speed change transmission system |
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| Publication number | Publication date |
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| CN105605183B (en) | 2018-04-17 |
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Effective date of registration: 20210319 Address after: 211121 No.12 Ruitai Road, industrial concentration area, Hushu street, Jiangning District, Nanjing City, Jiangsu Province Patentee after: NANJING CHUANGLI TRANSMISSION MACHINERY Co.,Ltd. Address before: 211225 Jiangsu Nanjing Lishui District Baima Town National Agricultural Science and Technology Park Nanjing Agricultural University base Patentee before: NANJING AGRICULTURAL University |