CN208519137U - A kind of hydraulic machinery infinitely variable transmission of big-power tractor - Google Patents
A kind of hydraulic machinery infinitely variable transmission of big-power tractor Download PDFInfo
- Publication number
- CN208519137U CN208519137U CN201820548104.XU CN201820548104U CN208519137U CN 208519137 U CN208519137 U CN 208519137U CN 201820548104 U CN201820548104 U CN 201820548104U CN 208519137 U CN208519137 U CN 208519137U
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- power
- hydraulic
- clutch
- pinion
- planet row
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Abstract
The utility model discloses a kind of big-power tractor hydraulic machinery infinitely variable transmissions, including machine driven system and Hydraulic Power Transmission System, the Hydraulic Power Transmission System includes variable pump, fixed displacement motor and flow of pressurized input shaft, the variable pump is connect with fixed displacement motor by oil pipe, the machine driven system includes PTO input shaft, mechanical output stream input shaft, output shaft and planetary gear mechanism;One end of the input shaft is connect with engine, while it is connected with mechanical output stream input shaft and PTO output shaft respectively by gear mesh;The mechanical output stream input shaft is equipped with the first planet row, and the hydraulic power stream input shaft is equipped with the second planet row, is connected with each other between first planet row and the second planet row, and the output shaft is equipped with the first, second, and third clutch.The utility model can realize the stepless time adjustment of speed changer by the control to clutch, and output speed is in consecutive variations, so that tractor reduces shift shock, smooth ride, reduces fuel loss and improves tractor economy.
Description
Technical field
The utility model relates to a kind of hydraulic gearbox, and in particular to a kind of stepless change of the hydraulic machinery of big-power tractor
Fast case, belongs to vehicle system dynamics and control technology field.
Background technique
Tractor is important agricultural production machinery, has more operation range, traditional gear drive is due to gear
Limitation be difficult to match with complicated operating condition, thus reduce vehicle it is gearing, drive stationarity, shift shock is big, changes
Kinetic energy rejection is big when gear, and then economy is lower;Limitation of the pure hydraulic drive speed changer developed in recent years due to manufacturing process
Have the characteristics that transmit that power is small, low efficiency.
Utility model content
The purpose of this utility model is place to overcome above-mentioned the deficiencies in the prior art, and providing one kind keeps tractor driving flat
Surely, pause and transition in rhythm or melody sense is small and can be achieved at the same time stepless speed regulation and power changes the hydraulic machinery infinitely variable transmission of section (shelves).
To achieve the above object, the utility model provides the following technical solutions: a kind of hydraulic machinery of big-power tractor
Infinitely variable transmission, it is characterised in that: including power feed system, hydraulic power transmission system, mechanical power transmission system and
Power output system;
The power feed system mainly includes engine and driving pinion, and the driving pinion is defeated with PTO respectively
The first transmission pinion on shaft is mutually nibbled with the second transmission pinion in machine driven system on mechanical output stream input shaft
It closes;
The mechanical power transmission system mainly includes mechanical output stream input shaft, the second transmission pinion, the machinery
Power flow input shaft right end and the planet carrier of the first planet row connect firmly, and the mechanical output stream input axle sleeve is mounted in motive power axis
In, the gear ring of the motive power axis and the first planet row connects firmly, and the motive power axis is successively arranged one grade of master from left to right
Moving gear and the first planet row, the planet carrier of first planet row are mutually connected firmly with the gear ring of the second planet row;
The hydraulic power transmission system mainly includes variable pump, fixed displacement motor and hydraulic power stream input shaft, pump input
The variable pump that axis is coaxially connected is connect by hydraulic oil pipe with fixed displacement motor, the output end and motor output shaft of the fixed displacement motor
Connection, the motor output shaft are engaged by hydraulic drive master gear with transmission gear hydraulic on flow of pressurized input shaft;It is described
Sun gear of the flow of pressurized input shaft left end successively with the sun gear of the second planet row and the first planet row connects firmly, the hydraulic work
Rate stream input axle sleeve is in motive power axis, and the planet carrier of the motive power axis and the second planet row connects firmly, the power
Support shaft is connected with two grades of driving gears, hydraulic drive pinion;
The power output system includes output shaft, and first clutch, second clutch are successively arranged on the output shaft
With third clutch, the power between first clutch control first speed driven gear and one grade of driving gear is transmitted, and described the
Power transmitting between two two grades of clutch control driven gears and two grades of driving gears, the third clutch control reverse gear are driven
Power transmitting between gear and hydraulic drive pinion.
Further, the first clutch, second clutch and third clutch are wet clutch;Described second
Clutch and third clutch are double-action clutch.
Further, the engine imparts power to the first transmission tooth by PTO input shaft and driving pinion
Wheel, the second transmission pinion;Second transmission pinion imparts power to the second biography for inputting axis connection by mechanical flow with it
Dynamic pinion and the first planet rows of planetary frame, the second transmission pinion also impart power to the third transmission tooth engaged
Wheel;First transmission pinion is outputed power by PTO output shaft, is assisted for tractor work.
The third transmission tooth imparts power to variable pump, and hydraulic power passes through variable pump and fixed displacement motor for power
Conversion, is then passed to the hydraulic drive pinion engaged with hydraulic drive master gear, hydraulic drive pinion passes through flow of pressurized
Hydraulic power is passed to the second planet row sun gear and the first planet row sun gear by input shaft;
The first planet row sun gear and the first planet rows of planetary frame mix hydraulic power and machine power by the
Wholeheartedly row toothrow circle, motive power axis and one grade of driving gear pass to first speed driven gear, by controlling first clutch work
Make by output shaft to export the output power of speed changer to tractor, tractor is driven to carry out advance work;
The second planet row gear ring and the second planet row sun gear, which mix machine power and hydraulic power, passes through second
Planet row planet carrier passes to two grades of driving gears, and two grades of driving gears impart power to the two grades of driven tooths engaged
The output power of speed changer is exported by output shaft to tractor by the work of control second clutch, drives tractor by wheel
Carry out advance work;
Hydraulic power is directly passed to the reverse gear driven gear engaged by the hydraulic drive pinion, passes through control
The work of third clutch exports the output power of speed changer to tractor by output shaft, and tractor is driven to carry out advance work
Make.
Compared with prior art, the utility model has the beneficial effects that
(1) double-action clutch is used, for cutting off and connecting engine power, realization changes section and prevents from overloading, double cropping
Clutch size has been simplified while ensureing that speed changer works normally with the design of clutch, has made clutch and connected toothed wheel knot
Structure is more compact;
(2) converging for mechanical flow and flow of pressurized is realized using double planet wheel rows of mixing transmission of converging, so that the whole knot of this speed changer
Structure is more compact, the curved form variation of output power, finally realizes variable speed;
(3) variable pump-fixed displacement motor speed-regulating system is not only easy to control, permanent torque output easy to accomplish, and slewing range is wide.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model;
Fig. 2 is the power feed system structural schematic diagram of the utility model;
Fig. 3 is the mechanical power transmission system structural schematic diagram of the utility model;
Fig. 4 is the hydraulic power transmission system structural schematic diagram of the utility model;
Fig. 5 is the power output system structural schematic diagram of the utility model;
In figure: 1- power feed system, 101- engine, 102- driving pinion, 103- first are driven pinion, 104-
PTO output shaft, 105-PTO input shaft;2- mechanical power transmission system, 201- mechanical output stream input shaft, 202- second are driven
Pinion, 203- the first planet rows of planetary frame, 204- the second planet row gear ring;3- hydraulic power transmission system, 301- third pass
Dynamic pinion, 302- pump input shaft, 303- variable pump, 304- hydraulic oil pipe, 305- fixed displacement motor, 306- motor output shaft,
307- hydraulic drive master gear, 308- hydraulic drive pinion, 309- hydraulic power stream input shaft, 310- the second planet row sun
Wheel, 311- the first planet row sun gear;4- power output system, 401- output shaft, 402- first clutch, the second clutch of 403-
Device, 404 third clutches, 405- first speed driven gear, bis- grades of driven gears of 406-, 407- reverse gear driven gear;Mono- grade of master of 5-
Moving gear, bis- grades of driving gears of 6-, the first planet row of 7-, the second planet row of 8-;A- motive power axis, B- motive power axis.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.Obviously, described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1: please referring to Fig. 1-Fig. 5, and the utility model provides a kind of technical solution: a kind of liquid of big-power tractor
Press mechanical pressing infinitely variable transmission, it is characterised in that: including power feed system (1), hydraulic power transmission system (3), machine power
Transmission system (2) and power output system (4);
The power feed system (1) mainly includes engine (101) and driving pinion (102), the main tooth of transmission
It takes turns (102) and is driven mechanical output stream in pinion (103) and machine driven system with first on PTO output shaft (104) respectively
The second transmission pinion (202) on input shaft (201) is meshed;
The mechanical power transmission system (2) mainly includes mechanical output stream input shaft (201), the second transmission pinion
(202), the planet carrier (203) of mechanical output stream input shaft (201) right end and the first planet row (7) connects firmly, the machinery
Power flow input shaft (201) is sleeved in motive power axis (B), the tooth of the motive power axis (B) and the first planet row (7)
Circle connects firmly, and the motive power axis (B) is successively arranged one grade of driving gear (5) and the first planet row (7) from left to right, described
The planet carrier (203) of first planet row (7) is mutually connected firmly with the gear ring (204) of the second planet row (8);
The hydraulic power transmission system (3) mainly includes variable pump (303), fixed displacement motor (305) and hydraulic power stream
Input shaft (309), the variable pump (303) that pump input shaft (302) is coaxially connected pass through hydraulic oil pipe (304) and fixed displacement motor
(305) it connects, the output end of the fixed displacement motor (305) is connect with motor output shaft (306), the motor output shaft (306)
It is engaged by hydraulic drive master gear (307) with transmission gear (308) hydraulic on hydraulic power stream input shaft (309);It is described
Hydraulic power stream input shaft (309) left end successively with the second planet row sun gear (310) and the first row of the second planet row (8)
The first planet row sun gear (311) of star row (7) connects firmly, and the hydraulic power stream input shaft (309) is sleeved on motive power axis
(A) in, the motive power axis (A) and the planet carrier of the second planet row (8) are connected firmly, and the motive power axis (A) is connected with two
Shelves driving gear (6), hydraulic drive pinion (308);
The power output system (4) includes output shaft (401), is successively arranged the first clutch on the output shaft (401)
Device (402), second clutch (403) and third clutch (404), the first clutch (402) control first speed driven gear
(405) the power transmitting between one grade of driving gear (5), the second clutch (403) control two grades of driven gears (406) with
Power transmitting between two grades of driving gears (6), third clutch (404) control reverse gear driven gear (407) and hydraulic biography
Power transmitting between dynamic pinion (308).
In order to avoid at shift (section), clutch impacts and the excessive (mistake of tractor service load this hydraulic stepless gearbox
Carry), the first clutch (402), second clutch (403) and third clutch (404) they are wet clutch;It is described
Second clutch (403) and third clutch (404) are double-action clutch;
It is described to start in order to realize shift (section) work of this hydraulic buncher and realize hydraulic stepless time adjustment requirement
Machine (101) imparts power to the first transmission pinion (103), the by PTO input shaft (105) and driving pinion (102)
Two transmissions pinion (202);Second transmission pinion (202), which is imparted power to, passes through mechanical output stream input shaft with it
(201) the second transmission pinion (202) of connection and the first planet rows of planetary frame (203), the second transmission pinion (202)
Impart power to third transmission pinion (301) engaged;First transmission pinion (103) passes through PTO output shaft
(104) it outputs power, is assisted for tractor work;
Third transmission pinion (301) imparts power to variable pump (303), and hydraulic power passes through variable pump
(303) power is converted with fixed displacement motor (305), is then passed to the hydraulic drive engaged with hydraulic drive master gear (307)
Hydraulic power is passed to second by hydraulic power stream input shaft (309) by pinion (308), hydraulic drive pinion (308)
Planet row sun gear (310) and the first planet row sun gear (311);
In order to realize first grade of (section) stepless time adjustment, the first planet row sun gear (311) and the first planet rows of planetary
Frame (203), which mixes hydraulic power and machine power, passes through the first planet row (7) gear ring, motive power axis (B) and one grade of active
Gear (5) passes to first speed driven gear (405), is worked by control first clutch (402) by the output power of speed changer
It is exported by output shaft (401) to tractor, tractor is driven to carry out advance work;
In order to realize second gear (section) stepless time adjustment, the second planet row gear ring (204) and the second planet row sun gear
(310) machine power and hydraulic power are mixed and two grades of driving gears (6) is passed to by the second planet row (8) planet carrier, two
Shelves driving gear (6) imparts power to the two grades of driven gears (406) engaged, by controlling second clutch (403)
Work exports the output power of speed changer to tractor by output shaft (401), and tractor is driven to carry out advance work;
In order to realize third gear (section) stepless time adjustment, the hydraulic drive pinion (308) directly transmits hydraulic power
To the reverse gear driven gear (407) engaged, worked by control third clutch (404) by the output power of speed changer
It is exported by output shaft (401) to tractor, tractor is driven to carry out advance work.
This hydraulic stepless time adjustment speed changer can realize speed in first grade (section), second gear (section), third gear (section) difference
Continuous curved variation, by control hydraulic motor working speed and operative orientation, it can be achieved that this hydraulic electrodeless variable-speed the
Speed is continuous when one grade (section) and second gear (section) shift (section), can reduce shift (section) impact, reduce driver's pause and transition in rhythm or melody sense, subtracts
Few fuel loss improves economy;This hydraulic electrodeless variable-speed gear is less can be on low-speed heave-load tractor and other mechanically movings
Using.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that can these embodiments be carried out with a variety of variations, repaired in the case where not departing from the principles of the present invention and spirit
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (3)
1. a kind of hydraulic machinery infinitely variable transmission of big-power tractor, it is characterised in that: including power feed system (1), liquid
Pressure power transmission system (3), mechanical power transmission system (2) and power output system (4);
The power feed system (1) mainly includes engine (101) and driving pinion (102), the driving pinion
(102) defeated with mechanical output stream in the first transmission pinion (103) and machine driven system on PTO output shaft (104) respectively
The second transmission pinion (202) entered on axis (201) is meshed;
The mechanical power transmission system (2) is mainly driven pinion (202) including mechanical output stream input shaft (201), second,
The planet carrier (203) of mechanical output stream input shaft (201) right end and the first planet row (7) connects firmly, the mechanical output stream
Input shaft (201) is sleeved in motive power axis (B), and the motive power axis (B) and the gear ring of the first planet row (7) connect firmly,
The motive power axis (B) is successively arranged one grade of driving gear (5) and the first planet row (7), first planet from left to right
The planet carrier (203) and the gear ring (204) of the second planet row (8) for arranging (7) mutually connect firmly;
The hydraulic power transmission system (3) mainly includes variable pump (303), fixed displacement motor (305) and the input of hydraulic power stream
Axis (309), the variable pump (303) that pump input shaft (302) is coaxially connected are connected by hydraulic oil pipe (304) and fixed displacement motor (305)
It connects, the output end of the fixed displacement motor (305) is connect with motor output shaft (306), and the motor output shaft (306) passes through hydraulic
Driving pinion (307) is engaged with transmission gear (308) hydraulic on hydraulic power stream input shaft (309);The hydraulic power
Flow input shaft (309) left end successively with the second planet row sun gear (310) and the first planet row (7) of the second planet row (8)
The first planet row sun gear (311) connect firmly, the hydraulic power stream input shaft (309) is sleeved in motive power axis (A), institute
It states motive power axis (A) and the planet carrier of the second planet row (8) connects firmly, the motive power axis (A) is connected with two grades of driving tooths
Take turns (6), hydraulic drive pinion (308);
The power output system (4) includes output shaft (401), is successively arranged first clutch on the output shaft (401)
(402), second clutch (403) and third clutch (404), the first clutch (402) control first speed driven gear
(405) the power transmitting between one grade of driving gear (5), the second clutch (403) control two grades of driven gears (406) with
Power transmitting between two grades of driving gears (6), third clutch (404) control reverse gear driven gear (407) and hydraulic biography
Power transmitting between dynamic pinion (308).
2. a kind of hydraulic machinery infinitely variable transmission of big-power tractor according to claim 1, it is characterised in that: described
First clutch (402), second clutch (403) and third clutch (404) are wet clutch;The second clutch
(403) and third clutch (404) is double-action clutch.
3. a kind of hydraulic machinery infinitely variable transmission of big-power tractor according to claim 1, it is characterised in that: described
Engine (101) imparts power to the first transmission pinion by PTO input shaft (105) and driving pinion (102)
(103), the second transmission pinion (202);Second transmission pinion (202) imparts power to defeated by mechanical output stream with it
Enter second transmission pinion (202) and the first planet rows of planetary frame (203) of axis (201) connection, the second transmission pinion (202)
Also third transmission pinion (301) engaged is imparted power to;First transmission pinion (103) passes through PTO output shaft
(104) it outputs power, is assisted for tractor work;
Third transmission pinion (301) imparts power to variable pump (303), hydraulic power by variable pump (303) and
Fixed displacement motor (305) converts power, is then passed to the hydraulic drive pinion engaged with hydraulic drive master gear (307)
(308), hydraulic power is passed to the second planet row by hydraulic power stream input shaft (309) by hydraulic drive pinion (308)
Sun gear (310) and the first planet row sun gear (311);
The first planet row sun gear (311) and the first planet rows of planetary frame (203) mix hydraulic power and machine power
First speed driven gear (405) are passed to by the first planet row (7) gear ring, motive power axis (B) and one grade of driving gear (5),
The output power of speed changer is exported by output shaft (401) to tractor, driving by control first clutch (402) work
Tractor carries out advance work;
The second planet row gear ring (204) and the second planet row sun gear (310) mix machine power and hydraulic power logical
It crosses the second planet row (8) planet carrier and passes to two grades of driving gears (6), two grades of driving gears (6) impart power to and nibble with it
The output power of speed changer is passed through output shaft by control second clutch (403) work by the two grades of driven gears (406) closed
(401) output drives tractor to carry out advance work to tractor;
Hydraulic power is directly passed to the reverse gear driven gear (407) engaged by the hydraulic drive pinion (308), is led to
It crosses control third clutch (404) work and exports the output power of speed changer to tractor by output shaft (401), driving is dragged
Machine drawing carries out advance work.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201820548104.XU CN208519137U (en) | 2018-04-16 | 2018-04-16 | A kind of hydraulic machinery infinitely variable transmission of big-power tractor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201820548104.XU CN208519137U (en) | 2018-04-16 | 2018-04-16 | A kind of hydraulic machinery infinitely variable transmission of big-power tractor |
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CN208519137U true CN208519137U (en) | 2019-02-19 |
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CN201820548104.XU Expired - Fee Related CN208519137U (en) | 2018-04-16 | 2018-04-16 | A kind of hydraulic machinery infinitely variable transmission of big-power tractor |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109723788A (en) * | 2019-01-16 | 2019-05-07 | 江苏大学 | A kind of variable speed drive |
CN112377602A (en) * | 2020-11-16 | 2021-02-19 | 重庆大学 | Control method of backflow type hydraulic mechanical stepless transmission system |
CN113879097A (en) * | 2021-09-15 | 2022-01-04 | 浙江大学 | Multi-mode electro-hydraulic hybrid power system |
CN114017484A (en) * | 2021-11-05 | 2022-02-08 | 南京农业大学 | Three-planetary-row three-section type hydraulic mechanical continuously variable transmission of high-power tractor |
CN115143249A (en) * | 2022-05-10 | 2022-10-04 | 潍柴动力股份有限公司 | HMCVT power split transmission system and engineering machinery |
-
2018
- 2018-04-16 CN CN201820548104.XU patent/CN208519137U/en not_active Expired - Fee Related
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109723788A (en) * | 2019-01-16 | 2019-05-07 | 江苏大学 | A kind of variable speed drive |
CN109723788B (en) * | 2019-01-16 | 2021-05-25 | 江苏大学 | Variable speed transmission device |
CN112377602A (en) * | 2020-11-16 | 2021-02-19 | 重庆大学 | Control method of backflow type hydraulic mechanical stepless transmission system |
CN113879097A (en) * | 2021-09-15 | 2022-01-04 | 浙江大学 | Multi-mode electro-hydraulic hybrid power system |
CN113879097B (en) * | 2021-09-15 | 2023-04-18 | 浙江大学 | Multi-mode electro-hydraulic hybrid power system |
CN114017484A (en) * | 2021-11-05 | 2022-02-08 | 南京农业大学 | Three-planetary-row three-section type hydraulic mechanical continuously variable transmission of high-power tractor |
CN114017484B (en) * | 2021-11-05 | 2022-06-03 | 南京农业大学 | Three-planetary-row three-section type hydraulic mechanical continuously variable transmission of high-power tractor |
CN115143249A (en) * | 2022-05-10 | 2022-10-04 | 潍柴动力股份有限公司 | HMCVT power split transmission system and engineering machinery |
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GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190219 Termination date: 20200416 |