CN103511598B - Big-power tractor infinitely variable transmission - Google Patents

Big-power tractor infinitely variable transmission Download PDF

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Publication number
CN103511598B
CN103511598B CN201310472545.8A CN201310472545A CN103511598B CN 103511598 B CN103511598 B CN 103511598B CN 201310472545 A CN201310472545 A CN 201310472545A CN 103511598 B CN103511598 B CN 103511598B
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China
Prior art keywords
gear
clutch
output shaft
power
input shaft
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Application number
CN201310472545.8A
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Chinese (zh)
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CN103511598A (en
Inventor
史金钟
王义平
冯春凌
薛志飞
罗明泉
李海成
葛志伟
杨彦朋
翟营
张曙彩
范京红
郭志强
王红
杨桂香
刘涛
卢绰
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First Tractor Co Ltd
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First Tractor Co Ltd
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Priority to CN201310472545.8A priority Critical patent/CN103511598B/en
Publication of CN103511598A publication Critical patent/CN103511598A/en
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Classifications

    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • 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
    • 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
    • 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
    • F16H2047/025—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the fluid gearing comprising a plurality of pumps or motors
    • 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
    • F16H2047/045—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 the fluid gearing comprising a plurality of pumps or motors
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02008—Gearboxes; Mounting gearing therein characterised by specific dividing lines or planes of the gear case
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
    • F16H2057/02056—Gearboxes for particular applications for vehicle transmissions for utility vehicles, e.g. tractors or agricultural machines

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Structure Of Transmissions (AREA)

Abstract

Big-power tractor infinitely variable transmission, comprising: casing before gearbox, middle casing, rear box, the first dividing plate, second partition, the 3rd dividing plate, hydro-mechanical transmission device and dead axle variable speed drive, advance transmission device and reverse gear device, four-wheel drive transmission device, power take-off; Before gearbox, casing, middle casing, rear box are arranged in order, before gearbox, casing, middle casing are connected by the first dividing plate bolt, rear box is connected with middle casing bolt, in middle casing, rear box, with bolt, second partition, the 3rd dividing plate are installed respectively, in gear box, form six parts cavity is installed; Hydro-mechanical transmission device front end is stretched out front casing and is connected with tractor engine, dead axle speed change gear rear end is stretched out rear box and is connected with back axle input end, power take-off rear end is stretched out rear box and is connected with the input end of pto＝power take-off, and four-wheel drive transmission device front end is stretched out rear box and is connected with farm tractor front axle.

Description

Big-power tractor infinitely variable transmission
Technical field
The invention belongs to tractor field, relate to a kind of gear box of tractor .Especiallyrelate to oneplant big-power tractor infinitely variable transmission .
Background technique
At present, domestic big-power tractor has generally adopted level to shift gears, and its shortcoming is that work gear is many, complex structure, and gearbox speed ratio is discontinuous, and travelling comfort is not high.Tractor is when different work operating mode, and motor but cannot be in optimal operating mode all the time, thus cannot realize the energy-conserving and environment-protective of tractor further.At present, what Foreign High Power tractor was equipped with is mainly segmented power dividing type gearbox.In order to realize the speed governing of gearbox, the section of changing, commutation, its structural type mainly contains three kinds: one is that dead axle part flow arrangement+integrated form hydrostatic transmission+hydraulic machinery confluxes planetary driving device+coaxial many rows of planetary transmission+rearmounted reverse drive gear; Another kind is that planet part flow arrangement+integrated form hydrostatic transmission+fixed axis gear confluxes transmission device+rearmounted reverse drive gear; The third is that dead axle part flow arrangement+preposition reverse drive gear+integrated form hydrostatic transmission+hydraulic machinery confluxes the planetary driving device+fixed axis gear section of changing transmission device.The first structural type, compact structure but processing and assembling required precision is high.The second structural type, structure is simple, and number of components is few, but high to hydraulic element performance requirement.The third form, processing and assembling required precision is low, but controls complicated.Above three kinds of schemes all adopt integrated hydraulic element and share oil sources with speed changing box lubricating system, and require high to Hydraulic system cleanliness, gearbox functional reliability not easily ensures.
Summary of the invention
The object of the present invention is to provide a kind of processing, assemble easy, handle, control reliable, hydraulic element generalization degree is high, easy to maintenance, is applicable to the infinitely variable transmission of big-power tractor.
Technological scheme of the present invention is: big-power tractor infinitely variable transmission, comprising: casing before gearbox, middle casing, rear box, the first dividing plate, second partition, the 3rd dividing plate, hydro-mechanical transmission device and dead axle variable speed drive, advance transmission device and reverse gear device, four-wheel drive transmission device, power take-off; Before gearbox, casing, middle casing, rear box are arranged in order, before gearbox, casing, middle casing are connected by the first dividing plate bolt, rear box is connected with middle casing bolt, in middle casing, rear box, with bolt, second partition, the 3rd dividing plate are installed respectively, in gear box, form five parts cavity is installed; Hydro-mechanical transmission device front end is stretched out front casing and is connected with tractor engine, the rear end of dead axle speed change gear is stretched out rear box and is connected with back axle input end, the rear end of power take-off is stretched out rear box and is connected with the input end of pto＝power take-off, and the front end of four-wheel drive transmission device is stretched out rear box and is connected with farm tractor front axle.
Hydro-mechanical transmission device comprises: torque-splitting transmission, oil pump driving device, motor power output unit, pump motor hydraulic transmission, power flow concentration transmission device, power dividing device output shaft, oil pump driving device input shaft, power converging device machinery stream input shaft, power converging device two output shaft 4th gear, power converging device one output shaft 3rd gear, power converging device flow of pressurized input shaft, 11 gear, 12 gear, 13 gear, 14 gear, 16 gear, 40 gear, 41 gear, oil pump driving device input shaft is positioned at the right part of gearbox, is arranged in middle casing by bearing, 11 gear is arranged in the lumen of middle casing, is fixed on oil pump driving device input shaft, power dividing device output shaft is arranged in front casing, the front end of power dividing device output shaft is connected by spline with torque-splitting transmission, the first dividing plate between front casing and middle casing is stretched out in rear end, is connected in the ante-chamber of middle casing by spline housing with oil pump driving device input shaft, power converging device two output shaft 4th gear is positioned at the middle part of gearbox, be arranged in the back cavity of front casing by bearing, power converging device machinery stream input shaft is arranged in power converging device two output shaft 4th gear axle center hole, be connected with torque-splitting transmission by spline, 40 gear, the 41 gear are arranged in the back cavity of front casing, are connected on power converging device two output shaft 4th gear, power converging device one output shaft 3rd gear is arranged on by bearing in the lumen of middle casing, power converging device flow of pressurized input shaft is arranged in the axle center hole of power converging device one output shaft 3rd gear, 16 gear is arranged in the back cavity of middle casing, be connected on power converging device flow of pressurized input shaft, 12 gear, the 13 gear, the 14 gear are arranged in the lumen of middle casing, 12 gear is by bearing housing on power converging device one output shaft 3rd gear, and the 13 gear, the 14 gear are connected on power converging device one output shaft 3rd gear.
Torque-splitting transmission comprises: transmission input shaft, the first gear, the second gear, the 42 gear; Transmission input shaft, the second gear, the 42 gear are arranged on the ante-chamber of front casing by bearing, the first gear is fixed on transmission input shaft, the second gear, the 42 gear respectively with the first gears meshing.
Oil pump driving device comprises: right side casing, oil pump driving device output shaft, oil pump driving device idler shaft, the 9th gear, the tenth gear; Oil pump driving device is positioned at the right side of gear box of tractor, is connected on middle casing by right side casing bolt; Oil pump driving device output shaft is arranged in the casing of right side by bearing, oil pump driving device idler shaft is packed in the casing of right side, 9th gear is packed on oil pump driving device output shaft, tenth gear is contained on oil pump driving device idler shaft by bearing housing, 9th gear is meshed with the tenth gear, and the tenth gear is meshed with the 11 gear being arranged in gearbox right part casing lumen.
Motor power output unit comprises: left side casing, motor power output unit idler shaft, motor power output unit input shaft, the 24 gear, the 25 gear, the 26 gear, the 27 gear, the 20 octadentate wheel, the 29 gear, motor power output unit is positioned at the left side of gear box of tractor, is connected on middle casing by left side casing bolt, motor power output unit idler shaft is packed in the casing of left side, motor power output unit input shaft is arranged in the casing of left side by bearing, 26 gear and the 20 octadentate are taken turns and are fixed on motor power output unit input shaft, 24 gear and the 25 gear are fixed together, 27 gear and the 29 gear are fixed together, be contained on motor power output unit idler shaft respectively by bearing housing, 25 gear is meshed with the 26 gear, 27 gear is taken turns with the 20 octadentate and is meshed, 24 gear is meshed with the 16 gear on power converging device flow of pressurized input shaft.
Power flow concentration transmission device comprises: front planet row, rear planet row, is arranged in the ante-chamber of middle casing; The 3rd gear on front planet row is fixed on power converging device two output shaft 4th gear of hydro-mechanical transmission device, and the 4th gear, is meshed with the 3rd gear, the 5th gear respectively by bearing housing on front-seat planet carrier; Rear seniority among brothers and sisters carrier on rear planet row is fixed on power converging device one output shaft 3rd gear of hydro-mechanical transmission device, and the 7th gear by bearing housing, is taken turns be meshed with the 6th gear, octadentate respectively in rear seniority among brothers and sisters carrier; The octadentate wheel of rear planet row is connected with the front-seat planet carrier of front planet row, flow input shaft with the power converging device machinery of hydro-mechanical transmission device to be again connected, 5th gear of front planet row is connected with the 6th gear of rear planet row, then is connected with the power converging device flow of pressurized input shaft of hydro-mechanical transmission device.
Pump motor hydraulic transmission comprises: Variable plunger pump, quantitative plunger motor, Variable plunger pump, quantitative plunger motor pipeline are connected, be arranged on oil pump driving device, motor power output unit respectively, Variable plunger pump is connected with the oil pump driving device output shaft of oil pump driving device, and quantitative plunger motor is connected with the motor power output unit input shaft of motor power output unit.
Advance transmission device comprises: forward drive device input shaft, forward clutch, the 19 gear, be positioned at the right middle of gear box of tractor, and forward drive device input shaft is arranged on the inner chamber of rear box by bearing, and the 3rd dividing plate is stretched out in its front end; Forward clutch is fixed on forward drive device input shaft, and the 19 gear, together with the case weld of forward clutch, is contained on forward drive device input shaft by bearing housing.
Reverse gear device comprises: Reversing Clutch input shaft, Reversing Clutch, the 32 gear, the 34 gear, be positioned at the lower right part of gear box of tractor; Reversing Clutch input shaft is arranged in the ante-chamber of middle casing by bearing, and the lumen entering middle casing is stretched out in its rear end; Reversing Clutch, the 32 gear are packed on Reversing Clutch input shaft, are arranged in the ante-chamber of middle casing, lumen respectively; 34 gear is contained on Reversing Clutch input shaft by bearing housing, is arranged on the ante-chamber of middle casing.
Four-wheel drive transmission device comprises: propons clutch output shaft, front wheel driving clutch, the 22 gear, be positioned at the bottom of gear box of tractor, is arranged on the back cavity of middle casing, the inner chamber of middle casing and the 3rd dividing plate therebetween; Propons clutch output shaft is arranged on the inner chamber of rear box by bearing, and its front end is stretched out the 3rd dividing plate and is connected with propons; Front wheel driving clutch is fixed on propons clutch output shaft, and the 22 gear, together with the case weld of front wheel driving clutch, is contained on propons clutch output shaft by bearing housing.
Power take-off comprises: power take-off input shaft, output shaft of power output device, the 15 gear, the 17 gear, be positioned at the middle part of gear box of tractor.Power take-off input shaft, output shaft of power output device are arranged on the inner chamber of rear box by bearing, the 3rd dividing plate is stretched out in the front end of power take-off input shaft, be connected with oil pump driving device input shaft by spline housing, output shaft of power output device is stretched out rear box and is connected with pto＝power take-off; 15 gear, the 17 gear are meshed, and are positioned at the inner chamber of rear box, are fixed in respectively in power take-off input shaft, output shaft of power output device.
Dead axle variable speed drive comprises: two gear clutch output shafts, one or three gear clutch output shafts, reversible drive device output shaft, back axle input shaft, hydraulic pressure gear clutch output shaft, four gear clutch output shafts, hydraulic pressure gear clutch, one gear clutch, two gear clutches, three gear clutches, four gear clutches, tenth octadentate wheel, 20 gear, 21 gear, 23 gear, 30 gear, 31 gear, 33 gear, 35 gear, 36 gear, 37 gear, 30 octadentate wheel, 39 gear composition, two gear clutch output shafts, one or three gear clutch output shafts are positioned at the right middle of gearbox, be arranged in the lumen of the back cavity of front casing, middle casing respectively by bearing, the rear ends of two gear clutch output shafts are stretched out the first dividing plate and are kept off clutch output shaft at the ante-chamber and or three of middle casing and be connected by spline housing, and one or three rear ends keeping off clutch output shafts are stretched out second partition and are connected with the forward drive device input shaft of advance transmission device by spline housing, two gear clutches are positioned at the back cavity of front casing, be fixed on two gear clutch output shafts, 39 gear, together with two case weld keeping off clutch, is contained on two gear clutch output shafts by bearing housing, is meshed with the 40 gear of hydro-mechanical transmission device, one gear clutch, three gear clutches, the 33 gear are arranged in the lumen of casing, be fixed on one or three gear clutch output shafts successively, 33 gear is meshed with the 12 gear that the 32 gear affixed on reverse gear device, hydro-mechanical transmission device are set with respectively, tenth octadentate wheel, the 31 gear keep off clutch, three respectively and keep off together with the case weld of clutch with one, be contained on one or three gear clutch output shafts by bearing housing, be meshed with the 14 gear of hydro-mechanical transmission device, the 13 gear, reversible drive device output shaft, back axle input shaft are positioned at the middle and lower part of gearbox, the inner chamber of middle casing, rear box is arranged on respectively by bearing, the first dividing plate is stretched out in the front end of reversible drive device output shaft, second partition is stretched out in the rear end of reversible drive device output shaft, back axle input shaft front end is stretched out rear box and is connected by spline housing with the rear end of reversible drive device output shaft, and back axle input shaft rear end is stretched out rear box and is connected with back axle, 30 octadentate wheel, 37 gear, 21 gear, 20 gear lays respectively at the back cavity of front casing, the ante-chamber of middle casing, the back cavity of middle casing, the inner chamber of rear box, 30 octadentate wheel, 37 gear is fixed on reversible drive device output shaft, 21 gear, 20 gear is on back axle input shaft, 37 gear is meshed with the 34 gear that reverse gear device is set with, 21 gear, 20 gear respectively with the 22 gear be sleeved on four-wheel drive transmission device, the 19 gear on advance transmission device is meshed, four gear clutch output shafts are positioned at the left portion of gearbox, the back cavity of front casing is arranged on by bearing, 35 gear, four gear clutches are fixed on four gear clutch output shafts respectively, 36 gear is together with four case weld keeping off clutch, be contained on four gear clutch output shafts by bearing housing, the 35 gear, the 36 gear are taken turns with the 30 octadentate be fixed on reversible drive device output shaft respectively, the 41 gear on hydro-mechanical transmission device is meshed, hydraulic pressure gear clutch output shaft is positioned at the left portion of gearbox, the lumen of middle casing is arranged on by bearing, 30 gear, hydraulic pressure gear clutch is fixed on hydraulic pressure gear clutch output shaft respectively, together with the case weld that 23 gear and hydraulic pressure keep off clutch, by bearing housing be contained in hydraulic pressure gear clutch output shaft on, the 30 gear, the 23 gear respectively be sleeved on the 12 gear on power converging device one output shaft 3rd gear, the 29 gear on motor power output unit idler shaft is meshed.
Following beneficial effect can be reached after the present invention adopts technique scheme:
The hydro-mechanical transmission device that the present invention adopts, dead axle speed change gear, rear-mounted advance and reverse gear device, external unitized oil hydraulic pump and motor, avoid coaxial many rows of planetary mechanism and single planet and formed by compound planet gear the technology that multiple-channel output realizes speed governing and the section of changing, processing request is low, assembling is simple, and in section, stepless speed regulation and the intersegmental section of changing control simple.Rear-mounted advance and reverse gear device, can realize tractor and commutate fast, reduces tractor service working time, improves the operating efficiency of tractor.External general stepless speed regulation hydraulic element use independent hydraulically controlled oil sources, and Hydraulic system cleanliness easily ensures, reliable performance.Single employing oil hydraulic pump and motor drive the Ultra-Low Speed and the starting of zero speed of a motor vehicle that can realize tractor, variable displacement pump of the present invention, the section of changing clutch all adopts electric liquid automatically to control, can realize tractor from zero to highest speed stepless change, motor can be kept when rated speed operates, obtain the speed of a motor vehicle of any desired that driver needs, can when keeping the tractor speed of a motor vehicle constant, the rotating speed of automatic change motor, automatically the working gear of dead axle speed change gear can be changed when tractor changing load, the rotating speed of oil pump delivery and motor, the various working condition of tractor can be met to the demand of speed, realize tractor, under any operating mode, there is excellent Economy, power character, travelling comfort.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of big-power tractor infinitely variable transmission of the present invention.
Fig. 2 is each axle deployment scenarios schematic diagram of big-power tractor infinitely variable transmission of the present invention.
Fig. 3 is the hydro-mechanical transmission Plant arrangement schematic diagram of hydro-mechanical transmission device in big-power tractor infinitely variable transmission of the present invention.
Fig. 4 is that the torque-splitting transmission of hydro-mechanical transmission device in big-power tractor infinitely variable transmission of the present invention arranges schematic diagram.
Fig. 5 is that the oil pump driving device of hydro-mechanical transmission device in big-power tractor infinitely variable transmission of the present invention arranges schematic diagram.
Fig. 6 is that the motor power output unit of hydro-mechanical transmission device in big-power tractor infinitely variable transmission of the present invention arranges schematic diagram.
Fig. 7 is the power flow concentration transmission arrangements schematic diagram of hydro-mechanical transmission device in big-power tractor infinitely variable transmission of the present invention.
Fig. 8 is that schematic diagram arranged by the pump motor hydraulic transmission of hydro-mechanical transmission device in big-power tractor infinitely variable transmission of the present invention.
Fig. 9 is the advance transmission arrangements schematic diagram of big-power tractor infinitely variable transmission of the present invention.
Figure 10 is the reverse gear Plant arrangement schematic diagram of big-power tractor infinitely variable transmission of the present invention.
Accompanying drawing 11 is the four-wheel drive transmission arrangements schematic diagram of big-power tractor infinitely variable transmission of the present invention.
Figure 12 is that the power take-off of big-power tractor infinitely variable transmission of the present invention arranges schematic diagram.
Figure 13 is that the dead axle variable speed drive of big-power tractor infinitely variable transmission of the present invention arranges schematic diagram.
Embodiment
Below in conjunction with embodiment, the invention will be further described.As shown in Figure 1, big-power tractor infinitely variable transmission, comprising: casing H1 before gearbox, middle casing H2, rear box H3, the first dividing plate C1, second partition C2, the 3rd dividing plate C3, hydro-mechanical transmission device 1 and dead axle variable speed drive 10, advance transmission device 7 and reverse gear device 11, four-wheel drive transmission device 8, power take-off 6.Before gearbox, casing H1, middle casing H2, rear box H3 are arranged in order, before gearbox, casing H1, middle casing H2 are connected by the first dividing plate C1 bolt, rear box H3 is connected with middle casing H2 bolt, in middle casing H2, rear box H3, with bolt, second partition C2, the 3rd dividing plate C3 are installed respectively, in gear box, form five parts thus cavity being installed for installing each transmission device.Hydro-mechanical transmission device 1 front end is stretched out front casing H1 and is connected with tractor engine, the rear end of dead axle speed change gear 11 is stretched out rear box H3 and is connected with back axle input end, the rear end of power take-off 6 is stretched out rear box H3 and is connected with the input end of pto＝power take-off, and the front end of four-wheel drive transmission device 8 is stretched out rear box H3 and is connected with propons.
Hydro-mechanical transmission device 1, as shown in Figure 3, primarily of torque-splitting transmission 2, oil pump driving device 4, motor power output unit 9, pump motor hydraulic transmission 5, power flow concentration transmission device 3, power dividing device output shaft S2, oil pump driving device input shaft S2a, power converging device machinery stream input shaft S3, power converging device two output shaft 4th gear S3a, power converging device one output shaft 3rd gear S3b, power converging device flow of pressurized input shaft S3c, 11 gear g11, 12 gear g12, 13 gear g13, 14 gear g14, 16 gear g16, 40 gear g40, 41 gear g41 forms.As shown in Figure 2, oil pump driving device input shaft S2a is positioned at the right part of gearbox, is arranged in middle casing H2 by bearing; 11 gear g11 is arranged in the lumen of middle casing H2, is fixed on oil pump driving device input shaft S2a.Power dividing device output shaft S2 is arranged in front casing H1, the front end of power dividing device output shaft S2 is connected by spline with torque-splitting transmission 2, the first dividing plate C1 between front casing H1 and middle casing H2 is stretched out in rear end, is connected in the ante-chamber of middle casing H2 by spline housing with oil pump driving device input shaft S2a.Power converging device two output shaft 4th gear S3a is positioned at the middle part of gearbox, be arranged in the back cavity of front casing H1 by bearing, power converging device machinery stream input shaft S3 is arranged in power converging device two output shaft 4th gear S3a axle center hole, be connected with torque-splitting transmission 2 by spline, 40 gear g40, the 41 gear g41 are arranged in the back cavity of front casing H1, are connected on power converging device two output shaft 4th gear S3a, power converging device one output shaft 3rd gear S3b is arranged on by bearing in the lumen of middle casing H2, power converging device flow of pressurized input shaft S3c is arranged in the axle center hole of power converging device one output shaft 3rd gear S3b, 16 gear g16 is arranged in the back cavity of middle casing H2, be connected on power converging device flow of pressurized input shaft S3c, 12 gear g12, 13 gear g13, 14 gear g14 is arranged in the lumen of middle casing H2, 12 gear g12 by bearing housing on power converging device one output shaft 3rd gear S3b, 13 gear g13, 14 gear g14 is connected on power converging device one output shaft 3rd gear S3b.
Torque-splitting transmission 2, as shown in Figure 4, forms primarily of transmission input shaft S1, the first gear g1, the second gear g2, the 42 gear g42.Transmission input shaft S1, the second gear g2, the 42 gear g42 are arranged on the ante-chamber of front casing H1 by bearing, the first gear g1 is fixed on transmission input shaft S1, and the second gear g2, the 42 gear g42 engage with the first gear g1 respectively.
Oil pump driving device 4, as shown in Figure 5, form primarily of right side casing H4, oil pump driving device output shaft S4, oil pump driving device idler shaft S5, the 9th gear g9, the tenth gear g10, oil pump driving device 4 is positioned at the right side of gearbox, is connected on middle casing H2 by right side casing H4 bolt.Oil pump driving device output shaft S4 is arranged in the casing H4 of right side by bearing, oil pump driving device idler shaft S5 is packed in the casing H4 of right side, 9th gear g9 is packed on oil pump driving device output shaft S4, tenth gear g10 is contained on oil pump driving device idler shaft S5 by bearing housing, 9th gear g9 is meshed with the tenth gear g10, and the tenth gear g10 is meshed with the 11 gear g11 being arranged in gearbox right part casing H2 lumen.
Motor power output unit 9, as shown in Figure 6, form primarily of left side casing H5, motor power output unit idler shaft S9, motor power output unit input shaft S10, the 24 gear g24, the 25 gear g25, the 26 gear g26, the 27 gear g27, the 20 octadentate wheel g28, the 29 gear g29, motor power output unit is positioned at the left side of gearbox, is connected on middle casing H2 by left side casing H5 bolt.Motor power output unit idler shaft S9 is packed in the casing H5 of left side, motor power output unit input shaft S10 is arranged in the casing H5 of left side by bearing, 26 gear g26 and the 20 octadentate are taken turns g28 and are fixed on motor power output unit input shaft S10, 24 gear g24 and the 25 gear g25 is fixed together, 27 gear g27 and the 29 gear g29 is fixed together, be contained on motor power output unit idler shaft S9 respectively by bearing housing, 25 gear g25 is meshed with the 26 gear g26, 27 gear g27 takes turns g28 with the 20 octadentate and is meshed, 24 gear g24 is meshed with the 16 gear g16 on power converging device flow of pressurized input shaft S3c.
Power flow concentration transmission device 3, as shown in Figure 7, main front planet row P1, rear planet row P2 form, and are arranged in the ante-chamber of middle casing H2.Front planet row P1 forms primarily of the 3rd gear g3, the 4th gear g4, the 5th gear g5, front-seat planet carrier J1,3rd gear g3 is fixed on the power converging device two output shaft 4th gear S3a of hydro-mechanical transmission device 1,4th gear g4, is meshed with the 3rd gear g3, the 5th gear g5 respectively by bearing housing on front-seat planet carrier J1.Rear planet row P2 forms primarily of the 6th gear g6, the 7th gear g7, octadentate wheel g8, rear seniority among brothers and sisters carrier J2, rear seniority among brothers and sisters carrier J2 is fixed on the power converging device one output shaft 3rd gear S3b of hydro-mechanical transmission device 1,7th gear g7 by bearing housing, is taken turns g8 be meshed with the 6th gear g6, octadentate respectively on rear seniority among brothers and sisters carrier J2.The octadentate wheel g8 of rear planet row P2 is connected with the front-seat planet carrier J1 of front planet row P1, flow input shaft s3 with the power converging device machinery of hydro-mechanical transmission device 1 to be again connected, the 5th gear g5 of front planet row P1 is connected with the 6th gear g6 of rear planet row P2, then is connected with the power converging device flow of pressurized input shaft S3c of hydro-mechanical transmission device 1.
Pump motor hydraulic transmission 5, as shown in Figure 8, form primarily of Variable plunger pump PU, quantitative plunger motor MO, Variable plunger pump PU, quantitative plunger motor MO pipeline are connected, be arranged on oil pump driving device 4, motor power output unit 9 respectively, Variable plunger pump PU is connected with the oil pump driving device output shaft S4 of oil pump driving device 4, it is inclined disc type automatically controlled two-way variable displacement plunger pump PU, quantitative plunger motor MO is connected with the motor power output unit input shaft S10 of motor power output unit 9, and it is clino-axis type quantitative plunger motor MO.Change the size that plunger pump obtains electric electromagnet and controls electric current, the flow direction and the uninterrupted of plunger pump main hydraulic fluid port output hydraulic pressure oil can be changed, turn to change corresponding to rotating speed size, when plunger pump does not control electric current by pipeline drive motor, when output flow is zero, motor stall.
Advance transmission device 7, as shown in Figure 9, form primarily of forward drive device input shaft S6b, forward clutch KF, the 19 gear g19, be positioned at the right middle of gearbox, forward drive device input shaft S6b is arranged on the inner chamber of rear box H3 by bearing, the 3rd dividing plate C3 is stretched out in its front end.Forward clutch KF is fixed on forward drive device input shaft S6b, it is that electric liquid open in usual handles multi-disc wet clutch, can engage according to control command, when there is no control command, be in separated state, 19 gear g19, together with the case weld of forward clutch KF, is contained on forward drive device input shaft S6b by bearing housing.
Reverse gear device 11, as shown in Figure 10, forms primarily of Reversing Clutch input shaft S12, Reversing Clutch KR, the 32 gear g32, the 34 gear g34, is positioned at the lower right part of gearbox.Reversing Clutch input shaft S12 is arranged in the ante-chamber of middle casing H2 by bearing, and the lumen entering middle casing H2 is stretched out in its rear end; Reversing Clutch KR is that electric liquid open in usual handles multi-disc wet clutch, can engage according to control command, when there is no control command, be in separated state, Reversing Clutch KR, the 32 gear g32 are packed on Reversing Clutch input shaft S12, are arranged in the ante-chamber of middle casing H2, lumen respectively; 34 gear g34 is contained on Reversing Clutch input shaft S12 by bearing housing, is arranged on the ante-chamber of middle casing H2.
Four-wheel drive transmission device 8, as shown in figure 11, form primarily of propons clutch output shaft S8, front wheel driving clutch K4W, the 22 gear g22, be positioned at the bottom of gearbox, be arranged on the back cavity of middle casing H2, the inner chamber of middle casing H3 and the 3rd dividing plate C3 therebetween.Propons clutch output shaft S8 is arranged on the inner chamber of rear box H3 by bearing, its front end is stretched out the 3rd dividing plate C3 and is connected with propons.Front wheel driving clutch K4W is fixed on propons clutch output shaft S8, it is that Normally closed type electricity liquid handles multi-disc wet clutch, can be separated according to control command, the 22 gear g22, together with the case weld of front wheel driving clutch K4W, is contained on propons clutch output shaft S8 by bearing housing.
Power take-off 6, as shown in figure 12, forms primarily of power take-off input shaft S2b, output shaft of power output device Sp, the 15 gear g15, the 17 gear g17, is positioned at the middle part of gearbox.Power take-off input shaft S2b, output shaft of power output device Sp are arranged on the inner chamber of rear box H3 by bearing, the 3rd dividing plate C3 is stretched out in the front end of power take-off input shaft S2b, be connected with oil pump driving device input shaft S2a by spline housing, output shaft of power output device Sp stretches out rear box H3 and is connected with pto＝power take-off; 15 gear g15, the 17 gear g17 are meshed, and are positioned at the inner chamber of rear box H3, are fixed in respectively on power take-off input shaft S2b, output shaft of power output device Sp.
Dead axle variable speed drive 10, as shown in figure 13, primarily of two gear clutch output shaft S6, one or three gear clutch output shaft S6a, reversible drive device output shaft S7, back axle input shaft S7a, hydraulic pressure gear clutch output shaft SH, four gear clutch output shaft S11, hydraulic pressure gear clutch KH, one gear clutch K1, two gear clutch K2, three gear clutch K3, four gear clutch K4, tenth octadentate wheel g18, 20 gear g20, 21 gear g21, 23 gear g23, 30 gear g30, 31 gear g31, 33 gear g33, 35 gear g35, 36 gear g36, 37 gear g37, 30 octadentate wheel g38, 39 gear g39 forms.Two gear clutch output shaft S6, one or three gear clutch output shaft S6a are positioned at the right middle of gearbox, be arranged in the lumen of the back cavity of front casing H1, middle casing H2 respectively by bearing, the rear ends of two gear clutch output shaft S6 are stretched out the first dividing plate C1 and are kept off clutch output shaft S6a at the ante-chamber and or three of middle casing H2 and be connected by spline housing, and one or three rear ends keeping off clutch output shaft S6a are stretched out second partition C2 and are connected with the forward drive device input shaft S6b of advance transmission device 7 by spline housing, two gear clutch K2 are positioned at the back cavity of front casing H1, be fixed on two gear clutch output shaft S6,39 gear g39 is together with two case weld keeping off clutch K2, be contained on two gear clutch output shaft S6 by bearing housing, be meshed with the 40 gear g40 of hydro-mechanical transmission device 1, one gear clutch K1, K3, 33 gear g33 is arranged in the lumen of casing H2, be fixed on one or three gear clutch output shaft S6a successively, 33 gear g33 respectively with affixed the 32 gear g32 on reverse gear device 11, on hydro-mechanical transmission device 1, the 12 gear g12 of suit is meshed, tenth octadentate wheel g18, 31 gear g31 keeps off clutch K1 with one respectively, the case weld of three gear clutch K3 together, be contained on one or three gear clutch output shaft S6a by bearing housing, with the 14 gear g14 of hydro-mechanical transmission device 1, 13 gear g13 is meshed, reversible drive device output shaft S7, back axle input shaft S7a are positioned at the middle and lower part of gearbox, the inner chamber of middle casing H2, rear box H3 is arranged on respectively by bearing, the first dividing plate C1 is stretched out in the front end of reversible drive device output shaft S7, second partition C2 is stretched out in the rear end of reversible drive device output shaft S7, back axle input shaft S7a is stretched out front end rear box H3 and is connected by spline housing with the rear end of reversible drive device output shaft S7, and back axle input shaft S7a stretches out rear end rear box H3 and is connected with back axle, 30 octadentate wheel g38, 37 gear g37, 21 gear g21, 20 gear g20 lays respectively at the back cavity of front casing H1, the ante-chamber of middle casing H2, the back cavity of middle casing H2, the inner chamber of rear box H3, 30 octadentate wheel g38, 37 gear g37 is fixed on reversible drive device output shaft S7, 21 gear g21, 20 gear g20 is on back axle input shaft S7a, 37 gear g37 is meshed with the 34 gear g34 that reverse gear device 11 is set with, 21 gear g21, 20 gear g20 respectively with the 22 gear g22 be sleeved on four-wheel drive transmission device 8, the 19 gear g19 on advance transmission device 7 is meshed, four gear clutch output shaft S11 are positioned at the left portion of gearbox, the back cavity of front casing H1 is arranged on by bearing, 35 gear g35, four gear clutch K4 are fixed on four gear clutch output shaft S11 respectively, 36 gear g36 is together with four case weld keeping off clutch K4, be contained on four gear clutch output shaft S11 by bearing housing, the 41 gear g41 that the 35 gear g35, the 36 gear g36 take turns on g38, hydro-mechanical transmission device 1 with the 30 octadentate be fixed on reversible drive device output shaft S7 is respectively meshed, hydraulic pressure gear clutch output shaft SH is positioned at the left portion of gearbox, the lumen of middle casing H2 is arranged on by bearing, 30 gear g30, hydraulic pressure gear clutch KH is fixed on hydraulic pressure gear clutch output shaft SH respectively, together with the case weld that 23 gear g23 and hydraulic pressure keep off clutch KH, be contained on hydraulic pressure gear clutch output shaft SH by bearing housing, 30 gear g30, 23 gear g23 respectively with the 12 gear g12 be sleeved on power converging device one output shaft 3rd gear S3b, the 29 gear g29 on motor power output unit idler shaft S9 is meshed.
Hydraulic pressure gear clutch KH in dead axle variable speed drive 10, a gear clutch K1, two gear clutch K2, three gear clutch K3, four gear clutch K4 are electric liquid open in usual and handle multi-disc wet clutch, all can engage according to control command, when there is no control command, be all in separated state.
As shown in Fig. 4, Fig. 3, Fig. 7, engine output power is input to transmission input shaft S1 through the torque-splitting transmission 2 of hydro-mechanical transmission device 1 and is divided into two-way: first via power enters the first gear g1 → the 42 gear g42 → power converging device machinery stream input shaft s3, is delivered to the front-seat planet carrier J1 of front planet row P1 in power flow concentration transmission device 3 afterwards, the octadentate of rear planet row P2 takes turns g8; Second road power enters the first gear g1 → the second gear g2 → power dividing device output shaft S2 → oil pump driving device input shaft S2a.As shown in Fig. 3, Figure 12, Fig. 5, Fig. 8, second road power is divided into Liang Ge branch after reaching oil pump driving device input shaft S2a again, and one of branch is that power take-off input shaft S2b → the 15 gear g15 → the 17 gear g17 → output shaft of power output device Sp entering power take-off 6 is delivered to Power output shaft device; Two of branch is the Variable plunger pump PU → quantitative plunger motor MO of the tenth gear g10 → the 9th gear g9 → oil pump driving device output shaft S4 → pump motor hydraulic transmission 5 entering the 11 gear g11 → oil pump driving device 4.Be delivered to the motor power output unit input shaft S10 of motor power output unit 9 afterwards, as shown in Figure 6, by being fixed in the upper 26 gear g26 of motor power output unit input shaft S10, 20 octadentate wheel g28 is further divided into Liang Ge branch: one, as Fig. 6, Fig. 3, shown in Fig. 7, enter the 26 gear g26 → the 25 gear g25 → the 24 gear g24 → the 16 gear g16 → power converging device flow of pressurized input shaft S3c, be delivered to the 6th gear g6 of planet row P2 after in power flow concentration transmission device 3 afterwards, the 5th gear g5 of front planet row P1, its two, as shown in Fig. 6, Figure 13, enter the 20 octadentate wheel g28 → the 27 gear g27 → the 29 gear g29 → the 23 gear g23, be delivered to the clutch housing of hydraulic pressure gear clutch KH.
Be delivered to the front-seat planet carrier J1 of planet row P1 before in power flow concentration transmission device 3, the power of the 5th gear g5, as Fig. 7, shown in Figure 13, be flowed to the 3rd gear g3 of front planet row P1, be delivered to the 40 gear g40 on power converging device two output shaft 4th gear S3a afterwards, 41 gear g41, be delivered to the octadentate wheel g8 of planet row P2 after in power flow concentration transmission device 3, 6th gear g6, be flowed to the rear seniority among brothers and sisters carrier J2 of rear planet row P2, be delivered to the 13 gear g13 on power converging device one output shaft 3rd gear S3b afterwards, 14 gear g14.When the rotating speed that motor is input to transmission input shaft S1 is constant, due to the modulation through pump motor hydraulic transmission, 5th gear g5, the rotating speed of the 6th gear g6 is variable, the output speed of the 3rd gear g3 of front planet row P1 and corresponding the 40 gear g40 be delivered on power converging device two output shaft 4th gear S3a, rotating speed and the 5th gear g5 input speed of the 41 gear g41 are inverse change, the output speed of the rear seniority among brothers and sisters carrier J2 in rear planet row P2 and corresponding the 13 gear g13 be delivered on power converging device one output shaft 3rd gear S3b, the rotating speed of the 14 gear g14 and the 6th gear g6 input speed are in changing in the same way.According to the different bonding states of the four gear clutch K4 of two gear clutch K2 on the hydraulic pressure gear clutch KH on hydraulic pressure gear clutch output shaft SH in dead axle variable speed drive 10, the gear clutch K1 on one or three gear clutch output shaft S6a, three gear clutch K3, two gear clutch output shaft S6, four gear clutch output shaft S11, can realize having 5 sections of different rotating speeds scopes, different Changing Pattern, controlled, continually varying rotating speed output on reversible drive device output shaft S7, back axle input shaft S7a.
First stepless change active section of gearbox: during tractor starting, hydraulic pressure gear clutch KH in dead axle variable speed drive 10, the forward clutch KF of advance transmission device 7 combine according to control command, now, the Reversing Clutch KR of reverse gear device 11 is in off state, Variable plunger pump PU obtain electric before, tractor remains static, and one of them electromagnet obtains electric, tractor advances, and enters first stepless change active section of gearbox.At this point, the engine power input power split transmission device 2 transmission input shaft S1 - > the first gear g1 - the second gear g2 - hydraulic machinery shuangliu power split unit output shaft of the transmission device 1 S2 - oil pump drive input shaft S2a 4-11 gear g11 - pump drives the gear g10 - gear g9 9-10 pump drive gear output shaft S4 - hydraulic gear pump motor 5 variable plunger pump PU - quantitative plunger motor MO - motor power take-off September 28th gear g28-27th gear g27-29 g29 - fixed axis gear shifting gear transmission device of 10 23 g23 - hydraulic gear clutch KH - 30 gear g30 gear - the 12th gear a g12-33 g33 - tourism in the clutch output shaft S6a - forward drive input shaft S6b - 7 advance forward gear clutch KF - 19 g19 - fixed axis gear variable speed drive of 10 20 the g20 - rear axle gear input shaft S7a, passed to the rear axle.When the control electric current that Variable plunger pump PU obtains electric electromagnet becomes large gradually, the Variable plunger pump PU output flow of pump motor hydraulic transmission 5 also becomes large thereupon, quantitative plunger motor MO rotating speed raises, increased by one or three gear clutch output shaft S6a of above link, back axle input shaft S7a rotating speed, the tractor speed of a motor vehicle also increases.The S7 axle be connected with back axle input shaft S7a, the 30 octadentate take turns g38, take turns the 35 gear g35 that g38 engages with the 30 octadentate, be connected with the 35 gear g35 four keep off clutch output shaft S11 and be then in idle running armed state all the time, with back axle input shaft S7a, there is identical rotation speed change rule.
Simultaneously, due to a gear clutch K1, two gear clutch K2, three gear clutch K3, four gear clutch K4 do not combine, after in the 16 gear g16 → power converging device flow of pressurized input shaft S3c → power flow concentration transmission device 3 of the 26 gear g26 → the 25 gear g25 → the 24 gear g24 → hydro-mechanical transmission device 1 of quantitative plunger motor MO → motor power output unit 9 the 6th gear g6 of planet row P2 and the 5th gear g5 of front planet row P1 power and in the power converging device machinery stream input shaft s3 → power flow concentration transmission device 3 of gear g1 → the 42 gear g42 → hydro-mechanical transmission device 1 of motor → torque-splitting transmission 2 before the front-seat planet carrier J1 of planet row P1 and after the power of octadentate wheel g8 of planet row P2, one is the 40 gear g40 on the power converging device two output shaft 4th gear S3a of the 3rd gear g3 → hydro-mechanical transmission device 1 of planet row P1 before driving, the 39 gear g39 on two gear clutch output shaft S6 of the 41 gear g41 → dead axle variable speed drive 10, two gear clutch K2 on the 36 gear g36 → bis-gear clutch output shaft S6 on four gear clutch output shaft S11, the shell idle running of four gear clutch K4 on four gear clutch output shaft S11, two is the 13 gear g13 that driving power confluxes on the power converging device one output shaft 3rd gear S3b of the rear seniority among brothers and sisters carrier J2 → hydro-mechanical transmission device 1 of planet row P2 after in transmission device 3, the 33 gear g33 in 14 gear g14 → dead axle variable speed drive 10 on one or three gear clutch output shaft S6a, tenth octadentate wheel g18 → mono-or three keep off three gear clutch K3 on clutch output shaft S6a, the shell idle running of one gear clutch K1.At gearbox first stepless change active section, when Variable plunger pump PU electromagnet obtains electric, it is contrary that the octadentate of the rotating speed of the 6th gear g6 of rear planet row P2 and the 5th gear g5 of front planet row P1 and the front-seat planet carrier J1 and rear planet row P2 of front planet row P1 takes turns g8 rotary speed direction.Along with Variable plunger pump PU magnet control electric current becomes large gradually, the rotating speed of the 6th gear g6 of rear planet row P2 and the 5th gear g5 of front planet row P1 rises thereupon, now, the racing speed of the shell of four gear clutch K4 on two gear clutch K2 and four gear clutch output shaft S11 on two gear clutch output shaft S6 rise thereupon, and the racing speed of three gear clutch K3 on one or three gear clutch output shaft S6a, a gear clutch K1 shell then decline thereupon.
Second stepless change active section of gearbox: when the tractor speed of a motor vehicle reaches certain speed of a motor vehicle from 0 liter, the working speed that shell racing speed and or three of keeping off clutch K1 in dead axle variable speed drive 10 on one or three gear clutch output shaft S6a keep off clutch output shaft S6a is identical, the control electric current that in pump motor hydraulic transmission 5, Variable plunger pump PU obtains electric electromagnet no longer increases, hydraulic pressure gear clutch KH in dead axle variable speed drive 10 is separated according to control command, one gear clutch K1 combines according to control command, the forward clutch KF of advance transmission device 7 still keeps bonding state by instruction, gear box of tractor enters second stepless change active section by first stepless change active section.Now, the transmission input shaft S1 of engine power input power shunt transmission gear 2, one tunnel in the 16 gear g16 → power converging device flow of pressurized input shaft S3c → power flow concentration transmission device 3 of the 26 gear g26 → the 25 gear g25 → the 24 gear g24 → hydro-mechanical transmission device 1 of the Variable plunger pump PU → quantitative plunger motor MO → motor power output unit 9 of the tenth gear g10 → the 9th gear g9 → oil pump driving device output shaft S4 → pump motor hydraulic transmission 5 of power dividing device output shaft S2 → oil pump driving device input shaft S2a → the 11 gear g11 → oil pump driving device 4 of first gear g1 → the second gear g2 → hydro-mechanical transmission device 1 after the 6th gear g6 of planet row P2, another road is through the mechanical octadentate wheel g8 flowing planet row P2 after in input shaft s3 → power flow concentration transmission device 3 of the first gear g1 → the 42 gear g42 → power converging device of torque-splitting transmission 2, after two-way power converges, by rear planet row P2 rear seniority among brothers and sisters carrier J2 → hydro-mechanical transmission device 1 in the tenth octadentates in the 14 gear g14 → dead axle variable speed drive 10 on power converging device one output shaft 3rd gear S3b on one or three gear clutch output shaft S6a take turns the 20 gear g20 → back axle input shaft S7a that gear clutch K1 → mono-or three kept off on clutch output shaft S6a, g18 → mono-or three keep off forward drive device input shaft S6b → forward clutch KF → the 19 gear g19 → dead axle variable speed drive 10 of clutch output shaft S6a → advance transmission device 7, be delivered to back axle.It is contrary that rotating speed and the octadentate in rear planet row P2 due to the 6th gear g6 of planet row P2 after in power flow concentration transmission device 3 take turns g8 rotary speed direction, along with Variable plunger pump controls the reduction gradually of electromagnet current, the rotating speed of the 6th gear g6 in rear planet row P2 declines thereupon, then, in planet row P2, the rotating speed of rear seniority among brothers and sisters carrier J2 then rises thereupon, increased by one or three gear clutch output shaft S6a of above link, back axle input shaft S7a rotating speed, the tractor speed of a motor vehicle also increases.When electric current reduces to 0, the stall of the 6th gear g6 in rear planet row P2, another control electromagnet of Variable plunger pump PU obtains electric afterwards, it is identical that rotating speed and the octadentate in rear planet row P2 of the 6th gear g6 in rear planet row P2 take turns g8 rotary speed direction, along with Variable plunger pump PU obtains the increase gradually of electric magnet control electric current, rear seniority among brothers and sisters carrier J2 rotating speed in rear planet row P2 rises further thereupon, also increased further by one or three gear clutch output shaft S6a of above link, back axle input shaft S7a rotating speed, the tractor speed of a motor vehicle also increases.The S7 axle be connected with back axle input shaft S7a, the 30 octadentate take turns g38, take turns the 35 gear g35 that g38 engages with the 30 octadentate, be connected with the 35 gear g35 four keep off clutch output shaft S11 and be then in idle running armed state all the time, with back axle input shaft S7a, there is identical rotation speed change rule.
Simultaneously, because hydraulic pressure gear clutch KH, two gear clutch K2, three gear clutch K3, four gear clutch K4 do not combine, all be in idle running armed state, along with being reduced to gradually of control electromagnet current of Variable plunger pump PU in pump motor hydraulic transmission 5 changes electromagnet and to control the change gradually of electric current large, the racing speed of the shell of the hydraulic pressure gear clutch KH in dead axle variable speed drive 10 on hydraulic pressure gear clutch output shaft SH also reduce thereupon, more oppositely increase gradually.The racing speed of four gear clutch K4 shells on two gear clutch K2 and four gear clutch output shaft S11 on two gear clutch output shaft S6 then decline gradually, and the idling speed of three gear clutch K3 shells on one or three gear clutch output shaft S6a then raises gradually.
3rd stepless change active section of gearbox: along with the rising of the tractor speed of a motor vehicle, the working speed that the two shell racing speed and two of keeping off clutch K2 in dead axle variable speed drive 10 on two gear clutch output shaft S6 keep off clutch output shaft S6 is identical, the control electric current that in pump motor hydraulic transmission 5, Variable plunger pump PU obtains electric electromagnet no longer increases, a gear clutch K1 in dead axle variable speed drive 10 is separated according to control command, two gear clutch K2 combine according to control command, the forward clutch KF of advance transmission device 7 still keeps bonding state by instruction, gear box of tractor enters the 3rd stepless change active section by second stepless change active section.Now, the transmission input shaft S1 of engine power input power shunt transmission gear 2, the 5th gear g5 of planet row P1 before in the 16 gear g16 → power converging device flow of pressurized input shaft S3c → power flow concentration transmission device 3 of the 26 gear g26 → the 25 gear g25 → the 24 gear g24 → hydro-mechanical transmission device 1 of the Variable plunger pump PU → quantitative plunger motor MO → motor power output unit 9 of the tenth gear g10 → the 9th gear g9 → oil pump driving device output shaft S4 → pump motor hydraulic transmission 5 of power dividing device output shaft S2 → oil pump driving device input shaft S2a → the 11 gear g11 → oil pump driving device 4 of one tunnel first gear g1 → the second gear g2 → hydro-mechanical transmission device 1, the front-seat planet carrier J1 of planet row P1 before in input shaft s3 → power flow concentration transmission device 3 is flowed through the first gear g1 → the 42 gear g42 → power converging device machinery of torque-splitting transmission 2 in another road, after two-way power converges, two gear clutch K2 → bis-kept off on clutch output shaft S6 by the 39 gear g39 → bis-on two gear clutch output shaft S6 in the 40 gear g40 → dead axle variable speed drive 10 on power converging device two output shaft 4th gear S3a in the 3rd gear g3 → hydro-mechanical transmission device 1 of front planet row P1 keep off the 20 gear g20 → back axle input shaft S7a that clutch output shaft S6 → mono-or three keep off forward drive device input shaft S6b → forward clutch KF → the 19 gear g19 → dead axle variable speed drive 10 of clutch output shaft S6a → advance transmission device 7, be delivered to back axle.Because the rotating speed of the 5th gear g5 of planet row P1 front in power flow concentration transmission device 3 is identical with the rotary speed direction of front-seat planet carrier J1 in front planet row P1, along with Variable plunger pump PU controls the reduction gradually of electromagnet current, the rotating speed of the 5th gear g5 in front planet row P1 declines thereupon, the rotating speed of the 3rd gear g3 then in front planet row P1 then rises thereupon, increased by one or three gear clutch output shaft S6a of above link, back axle input shaft S7a rotating speed, the tractor speed of a motor vehicle also increases.When electric current reduces to 0, the stall of the 5th gear g5 of front planet row P1, Variable plunger pump PU obtains electromagnet change afterwards, the rotating speed of the 5th gear g5 of front planet row P1 is contrary with front planet row P1 front-seat planet carrier J1 rotary speed direction, along with Variable plunger pump PU obtains the increase gradually of electric magnet control electric current, the rotating speed of the 3rd gear g3 of front planet row P1 rises further thereupon, also increased further by one or three gear clutch output shaft S6a of above link, back axle input shaft S7a rotating speed, the tractor speed of a motor vehicle also increases.The S7 axle be connected with back axle input shaft S7a, the 30 octadentate take turns g38, take turns the 35 gear g35 that g38 engages with the 30 octadentate, be connected with the 35 gear g35 four keep off clutch output shaft S11 and be then in idle running armed state all the time, with back axle input shaft S7a, there is identical rotation speed change rule.
Simultaneously, because hydraulic pressure gear clutch KH, a gear clutch K1, three gear clutch K3, four gear clutch K4 do not combine, all be in idle running armed state, electromagnet is changed and to control the change gradually of electric current large along with Variable plunger pump PU in pump motor hydraulic transmission 5 controls being reduced to gradually of electromagnet current, the racing speed of the shell of the hydraulic pressure gear clutch KH in dead axle variable speed drive 10 on hydraulic pressure gear clutch output shaft SH also reduce thereupon, more oppositely increase gradually.The idling speed of the gear clutch K1 on one or three gear clutch output shaft S6a, the shell of three gear clutch K3 then declines gradually, the racing speed of the four four gear clutch K4 shells kept off on clutch output shaft S11 then raise gradually.
4th stepless change active section of gearbox: along with the rising of the tractor speed of a motor vehicle, the working speed that the three shell racing speed and two of keeping off clutch K3 in dead axle variable speed drive 10 on one or three gear clutch output shaft S6a keep off clutch output shaft S6 is identical, the control electric current that in pump motor hydraulic transmission 5, Variable plunger pump PU obtains electric electromagnet no longer increases, two gear clutch K2 in dead axle variable speed drive 10 are separated according to control command, three gear clutch K3 combine according to control command, the forward clutch KF of advance transmission device 7 still keeps bonding state by instruction, gear box of tractor enters the 4th stepless change active section by the 3rd stepless change active section.
Now, the transmission input shaft S1 of engine power input power shunt transmission gear 2, one tunnel in the 16 gear g16 → power converging device flow of pressurized input shaft S3c → power flow concentration transmission device 3 of the 26 gear g26 → the 25 gear g25 → the 24 gear g24 → hydro-mechanical transmission device 1 of the Variable plunger pump PU → quantitative plunger motor MO → motor power output unit 9 of the tenth gear g10 → the 9th gear g9 → oil pump driving device output shaft S4 → pump motor hydraulic transmission 5 of power dividing device output shaft S2 → oil pump driving device input shaft S2a → the 11 gear g11 → oil pump driving device 4 of first gear g1 → the second gear g2 → hydro-mechanical transmission device 1 after the 6th gear g6 of planet row P2, another road is through the mechanical octadentate wheel g8 flowing planet row P2 after in input shaft s3 → power flow concentration transmission device 3 of the first gear g1 → the 42 gear g42 → power converging device of torque-splitting transmission 2, after two-way power converges, by rear planet row P2 rear seniority among brothers and sisters carrier J2 → hydro-mechanical transmission device 1 in three gear clutch K3 → mono-or three kept off on clutch output shaft S6a, the 31 gear g31 → mono-or three in the 13 gear g13 → dead axle variable speed drive 10 on power converging device one output shaft 3rd gear S3b on one or three gear clutch output shaft S6a keep off the 20 gear g20 → back axle input shaft S7a of forward drive device input shaft S6b → forward clutch KF → the 19 gear g19 → dead axle variable speed drive 10 of clutch output shaft S6a → advance transmission devices 7, be delivered to back axle.It is contrary that rotating speed and the octadentate in rear planet row P2 due to the 6th gear g6 of planet row P2 after in power flow concentration transmission device 3 take turns g8 rotary speed direction, along with Variable plunger pump controls the reduction gradually of electromagnet current, the rotating speed of the 6th gear g6 in rear planet row P2 declines thereupon, then, in planet row P2, the rotating speed of rear seniority among brothers and sisters carrier J2 then rises thereupon, increased by one or three gear clutch output shaft S6a of above link, back axle input shaft S7a rotating speed, the tractor speed of a motor vehicle also increases.When electric current reduces to 0, the stall of the 6th gear g6 in rear planet row P2, another control electromagnet of Variable plunger pump PU obtains electric afterwards, it is identical that rotating speed and the octadentate in rear planet row P2 of the 6th gear g6 in rear planet row P2 take turns g8 rotary speed direction, along with Variable plunger pump PU obtains the increase gradually of electric magnet control electric current, rear seniority among brothers and sisters carrier J2 rotating speed in rear planet row P2 rises further thereupon, also increased further by one or three gear clutch output shaft S6a of above link, back axle input shaft S7a rotating speed, the tractor speed of a motor vehicle also increases.The S7 axle be connected with back axle input shaft S7a, the 30 octadentate take turns g38, take turns the 35 gear g35 that g38 engages with the 30 octadentate, be connected with the 35 gear g35 four keep off clutch output shaft S11 and be then in idle running armed state all the time, with back axle input shaft S7a, there is identical rotation speed change rule.
Simultaneously, because hydraulic pressure gear clutch KH, a gear clutch K1, two gear clutch K2, four gear clutch K4 do not combine, all be in idle running armed state, electromagnet is changed and to control the change gradually of electric current large along with Variable plunger pump PU in pump motor hydraulic transmission 5 controls being reduced to gradually of electromagnet current, the racing speed of the shell of the hydraulic pressure gear clutch KH in dead axle variable speed drive 10 on hydraulic pressure gear clutch output shaft SH also reduce thereupon, more oppositely increase gradually.The racing speed of four gear clutch K4 shells on two gear clutch K2 and four gear clutch output shaft S11 on two gear clutch output shaft S6 then decline gradually, and the idling speed of the gear clutch K1 shell on one or three gear clutch output shaft S6a then raises gradually.
5th stepless change active section of gearbox: along with the rising of the tractor speed of a motor vehicle, the working speed that the four shell racing speed and four of keeping off clutch K4 in dead axle variable speed drive 10 on four gear clutch output shaft S11 keep off clutch output shaft S11 is identical, the control electric current that in pump motor hydraulic transmission 5, Variable plunger pump PU obtains electric electromagnet no longer increases, the forward clutch KF of advance transmission device 7 is separated according to control command, four gear clutch K4 in dead axle variable speed drive 10 combine according to control command, three gear clutch K3 still keep bonding state by instruction, gear box of tractor enters the 5th stepless change active section by the 4th stepless change active section.Now, the transmission input shaft S1 of engine power input power shunt transmission gear 2, the 5th gear g5 of planet row P1 before in the 16 gear g16 → power converging device flow of pressurized input shaft S3c → power flow concentration transmission device 3 of the 26 gear g26 → the 25 gear g25 → the 24 gear g24 → hydro-mechanical transmission device 1 of the Variable plunger pump PU → quantitative plunger motor MO → motor power output unit 9 of the tenth gear g10 → the 9th gear g9 → oil pump driving device output shaft S4 → pump motor hydraulic transmission 5 of power dividing device output shaft S2 → oil pump driving device input shaft S2a → the 11 gear g11 → oil pump driving device 4 of one tunnel first gear g1 → the second gear g2 → hydro-mechanical transmission device 1, the front-seat planet carrier J1 of planet row P1 before in input shaft s3 → power flow concentration transmission device 3 is flowed through the first gear g1 → the 42 gear g42 → power converging device machinery of torque-splitting transmission 2 in another road, after two-way power converges, four gear clutch K4 → tetra-kept off on clutch output shaft S11 by the 36 gear g36 → tetra-on four gear clutch output shaft S11 in the 41 gear g41 → dead axle variable speed drive 10 on power converging device two output shaft 4th gear S3a in the 3rd gear g3 → hydro-mechanical transmission device 1 of front planet row P1 keep off clutch output shaft S11 → the 35 gear g35 → the 30 octadentate and take turns g38 → reversible drive device output shaft S7 → back axle input shaft S7a, be delivered to back axle.Because the rotating speed of the 5th gear g5 of planet row P1 front in power flow concentration transmission device 3 is identical with the rotary speed direction of front-seat planet carrier J1 in front planet row P1, along with Variable plunger pump PU controls the reduction gradually of electromagnet current, the rotating speed of the 5th gear g5 in front planet row P1 declines thereupon, the rotating speed of the 3rd gear g3 then in front planet row P1 then rises thereupon, increased by one or three gear clutch output shaft S6a of above link, back axle input shaft S7a rotating speed, the tractor speed of a motor vehicle also increases.When electric current reduces to 0, the stall of the 5th gear g5 of front planet row P1, Variable plunger pump PU obtains electromagnet change afterwards, the rotating speed of the 5th gear g5 of front planet row P1 is contrary with front planet row P1 front-seat planet carrier J1 rotary speed direction, along with Variable plunger pump PU obtains the increase gradually of electric magnet control electric current, the rotating speed of the 3rd gear g3 of front planet row P1 rises further thereupon, also increased further by the axle 13 of above link, back axle input shaft S7a rotating speed, the tractor speed of a motor vehicle also increases.
Simultaneously, due to hydraulic pressure gear clutch KH, one gear clutch K1, two gear clutch K2, forward clutch KF does not combine, all be in idle running armed state, because in dead axle variable speed drive 10, three gear clutch K3 are still in bonding state, two gear clutch output shaft S6, one or three gear clutch output shaft S6a, forward drive device input shaft S6b dallies with three gear clutch K3, electromagnet is changed and to control the change gradually of electric current large along with Variable plunger pump PU in pump motor hydraulic transmission 5 controls being reduced to gradually of electromagnet current, the racing speed of the shell of the hydraulic pressure gear clutch KH in dead axle variable speed drive 10 on hydraulic pressure gear clutch output shaft SH also reduce thereupon, oppositely increase gradually again.The racing speed of the forward clutch KF shell in the shell of the gear clutch K1 on one or three gear clutch output shaft S6a, three gear clutch K3, two gear clutch output shaft S6, one or three gear clutch output shaft S6a, advance transmission device 7 in the shell that racing speed then decline gradually, two gear clutch output shaft S6 upper two keep off clutch K2 of forward drive device input shaft S6b, advance transmission device 7 on forward drive device input shaft S6b then raise gradually.
Tractor slows down from highest speed, as racing speed and the forward drive device input shaft S6b of the forward clutch KF shell on forward drive device input shaft S6b in advance transmission device 7, when forward clutch KF rotating speed is identical, four gear clutch K4 in dead axle variable speed drive 10 on four gear clutch output shaft S11 are separated according to control command, the forward clutch KF of advance transmission device 7 combines according to control command, three gear clutch K3 in dead axle variable speed drive 10 are by still keeping bonding state, gear box of tractor enters the 4th stepless change active section by the 5th stepless change active section, its power transmission route is with the 4th stepless change active section of aforementioned gearbox.When the speed of a motor vehicle continues to decline, when the racing speed and two of two gear clutch K2 shells on two gear clutch output shaft S6 keep off clutch output shaft S6, when two gear clutch K2 rotating speeds are identical, three gear clutch K3 on one or three gear clutch output shaft S6a are separated according to control command, two gear clutch K2 in dead axle variable speed drive 10 combine according to control command, the forward clutch KF of advance transmission device 7 is by still keeping bonding state, gear box of tractor enters the 3rd stepless change active section by the 4th stepless change active section, its power transmission route is with the 3rd stepless change active section of aforementioned gearbox.The speed of a motor vehicle continues to decline again, when the racing speed and or three of the gear clutch K1 shell on one or three gear clutch output shaft S6a keep off clutch output shaft S6a, when one gear clutch K1 rotating speed is identical, two gear clutch K2 on two gear clutch output shaft S6 are separated according to control command, a gear clutch K1 in dead axle variable speed drive 10 combines according to control command, the forward clutch KF of advance transmission device 7 is by still keeping bonding state, gear box of tractor enters second stepless change active section by the 3rd stepless change active section, its power transmission route is with second stepless change active section of aforementioned gearbox.When the speed of a motor vehicle continues to decline, when the racing speed of the hydraulic pressure gear clutch KH shell on hydraulic pressure gear clutch output shaft SH and hydraulic pressure keep off clutch output shaft SH, when hydraulic pressure gear clutch KH rotating speed is identical, a gear clutch K1 on one or three gear clutch output shaft S6a is separated according to control command, hydraulic pressure gear clutch KH in dead axle variable speed drive 10 combines according to control command, the forward clutch KF of advance transmission device 7 is by still keeping bonding state, gear box of tractor enters first stepless change active section by second stepless change active section, its power transmission route is with first stepless change active section of aforementioned gearbox.
Four stepless change sections are had when tractor falls back.
First stepless change work backwards section of gearbox: during tractor starting, hydraulic pressure gear clutch KH in dead axle variable speed drive 10, the Reversing Clutch KR of reverse gear device 11 combine according to control command, now, the forward clutch KF of advance transmission device 7 is in off state, Variable plunger pump PU obtain electric before, tractor remains static, and one of them electromagnet obtains electric, tractor falls back, and enters gearbox and to fall back first stepless change active section of state.At this point, the engine power input power split transmission device 2 transmission input shaft S1 - > the first gear g1 - the second gear g2 - hydraulic machinery shuangliu power split unit output shaft of the transmission device 1 S2 - oil pump drive input shaft S2a 4-11 gear g11 - pump drives the gear g10 - gear g9 9-10 pump drive gear output shaft S4 - hydraulic gear pump motor 5 variable plunger pump PU - quantitative plunger motor MO - motor power take-off September 28th gear g28 to 27th gear g27, gear g29 29 - fixed axis gear g23 23 - hydraulic variable speed drive 10 block clutch KH - 30 gear g30 - the 12th gear a g12-33 gear g33-32 gear of g32, reverse gear transfering 11 reverse clutch input shaft speed 12 - reverse clutch KR - 34 gear g34 - fixed axis gear in case of variable speed drive 10 g37 - reverse drive output shaft S7 - rear axle input shaft S7a, passed to the rear axle.When the control electric current that Variable plunger pump PU obtains electric electromagnet becomes large gradually, the Variable plunger pump PU output flow of pump motor hydraulic transmission 5 also becomes large thereupon, quantitative plunger motor MO rotating speed raises, increased by one or three gear clutch output shaft S6a of above link, back axle input shaft S7a rotating speed, the tractor speed of a motor vehicle also increases.
Second stepless change work backwards section of gearbox: when continuing to improve the speed of a motor vehicle, its section of changing rule is with aforementioned advance second stepless change active section, unlike power transmission line after two-way power converges, the 37 gear g37 → reversible drive device output shaft S7 → back axle input shaft S7a that g18 → mono-or three keep off the 32 gear g32 → Reversing Clutch input shaft S12 → Reversing Clutch KR → the 34 gear g34 → dead axle variable speed drive 10 of gear clutch K1 → mono-or three gear clutch output shaft S6a → the 33 gear g33 → reverse gear device 11 on clutch output shaft S6a is taken turns by the tenth octadentates on one or three gear clutch output shaft S6a in the 14 gear g14 → dead axle variable speed drive 10 on power converging device one output shaft 3rd gear S3b in the rear seniority among brothers and sisters carrier J2 → hydro-mechanical transmission device 1 of planet row P2 rear in power flow concentration transmission device 3, be delivered to back axle.
3rd stepless change work backwards section of gearbox: when continuing to improve the speed of a motor vehicle, its section of changing rule is with aforementioned advance the 3rd stepless change active section, unlike power transmission line after two-way power converges, after two-way power converges, two gear clutch K2 → bis-kept off on clutch output shaft S6 by the 39 gear g39 → bis-on two gear clutch output shaft S6 in the 40 gear g40 → dead axle variable speed drive 10 on power converging device two output shaft 4th gear S3a in the 3rd gear g3 → hydro-mechanical transmission device 1 of planet row P1 front in power flow concentration transmission device 3 keep off the 37 gear g37 → reversible drive device output shaft S7 → back axle input shaft S7a of the 32 gear g32 → Reversing Clutch input shaft S12 → Reversing Clutch KR → the 34 gear g34 → dead axle variable speed drive 10 of clutch output shaft S6 → mono-or three gear clutch output shaft S6a → the 33 gear g33 → reverse gear device 11, be delivered to back axle.
4th stepless change work backwards section of gearbox: when continuing to improve the speed of a motor vehicle, its section of changing rule is with aforementioned advance the 4th stepless change active section, unlike power transmission line after two-way power converges, three gear clutch K3 → mono-or three kept off on clutch output shaft S6a by the 31 gear g31 → mono-or three on one or three gear clutch output shaft S6a in the 13 gear g13 → dead axle variable speed drive 10 on power converging device one output shaft 3rd gear S3b in the rear seniority among brothers and sisters carrier J2 → hydro-mechanical transmission device 1 of planet row P2 rear in power flow concentration transmission device 3 keep off the 37 gear g37 → reversible drive device output shaft S7 → back axle input shaft S7a of the 32 gear g32 → Reversing Clutch input shaft S12 → Reversing Clutch KR → the 34 gear g34 → dead axle variable speed drive 10 of clutch output shaft S6a → the 33 gear g33 → reverse gear devices 11, be delivered to back axle.
When tractor falls back and slows down from high to low, its section of changing rule is with advance relevant work section.Power transmission line is with falling back relevant work section.
During front wheel driving work, front wheel driving clutch K4W in four-wheel drive transmission device 8 on propons clutch output shaft S8 combines according to control command, be passed to power in dead axle variable speed drive 10 on back axle input shaft S7a by the 21 gear g21 → front wheel driving clutch K4W → propons clutch output shaft S8, be passed to propons.
The hydro-mechanical transmission device 1 that the present invention adopts, its power flow concentration transmission device 3 has two conflux planetary gear set, each planet row has two output terminals, motor power output unit 9 has two output terminals equally, by the discharge capacity of Variable plunger pump PU in adjustment pump motor hydraulic transmission 5, and then the output speed of adjustable motor power output unit 9.Dead axle speed change gear 10 has five load gearshift gears, with power flow concentration transmission device 3 work in combination or the work in combination direct with motor power output unit 9 of hydro-mechanical transmission device 1, five gears can be formed in tractor direction of advance, and the continuous operation section that adjacent speed ratio overlaps, reverse direction can form the continuous operation section that four adjacent gear speed ratios overlap, engine operation in rated speed time, tractor can realize continuous variable, controlled from-23km/h ~ 0km/h ~ 40km/h vehicle speed range.

Claims (9)

1. big-power tractor infinitely variable transmission, comprising: casing (H1) before gearbox, middle casing (H2), rear box (H3), the first dividing plate (C1), second partition (C2), the 3rd dividing plate (C3), hydro-mechanical transmission device (1) and dead axle variable speed drive (10), advance transmission device (7) and reverse gear device (11), four-wheel drive transmission device (8), power take-off (6), it is characterized in that: before gearbox, casing (H1), middle casing (H2), rear box (H3) are arranged in order, before gearbox, casing (H1), middle casing (H2) are connected with bolt by the first dividing plate (C1), rear box (H3) is connected with bolt with middle casing (H2), in middle casing (H2), rear box (H3), with bolt, second partition (C2), the 3rd dividing plate (C3) are installed respectively, in gear box, form five parts cavity is installed, hydro-mechanical transmission device (1) front end is stretched out front casing (H1) and is connected with tractor engine, the rear end of dead axle speed change gear (11) is stretched out rear box (H3) and is connected with back axle input end, the rear end of power take-off (6) is stretched out rear box (H3) and is connected with the input end of pto＝power take-off, and the front end of four-wheel drive transmission device (8) is stretched out rear box (H3) and is connected with farm tractor front axle, hydro-mechanical transmission device (1) comprising: torque-splitting transmission (2), oil pump driving device (4), motor power output unit (9), pump motor hydraulic transmission (5), power flow concentration transmission device (3), power dividing device output shaft (S2), oil pump driving device input shaft (S2a), power converging device machinery stream input shaft (S3), power converging device two output shaft 4th gear (S3a), power converging device one output shaft 3rd gear (S3b), power converging device flow of pressurized input shaft (S3c), 11 gear (g11), 12 gear (g12), 13 gear (g13), 14 gear (g14), 16 gear (g16), 40 gear (g40), 41 gear (g41), oil pump driving device input shaft (S2a) is positioned at the right part of gearbox, is arranged in middle casing (H2) by bearing, 11 gear (g11) is arranged in the lumen of middle casing (H2), is fixed on oil pump driving device input shaft (S2a), power dividing device output shaft (S2) is arranged in front casing (H1), the front end of power dividing device output shaft (S2) is connected by spline with torque-splitting transmission (2), the first dividing plate (C1) between front casing (H1) and middle casing (H2) is stretched out in rear end, is connected in the ante-chamber of middle casing (H2) by spline housing with oil pump driving device input shaft (S2a), power converging device two output shaft 4th gear (S3a) is positioned at the middle part of gearbox, be arranged in the back cavity of front casing (H1) by bearing, power converging device machinery stream input shaft (S3) is arranged in power converging device two output shaft 4th gear (S3a) axle center hole, be connected with torque-splitting transmission (2) by spline, 40 gear (g40), the 41 gear (g41) are arranged in the back cavity of front casing (H1), are connected on power converging device two output shaft 4th gear (S3a), power converging device one output shaft 3rd gear (S3b) is arranged on by bearing in the lumen of middle casing (H2), power converging device flow of pressurized input shaft (S3c) is arranged in the axle center hole of power converging device one output shaft 3rd gear (S3b), 16 gear (g16) is arranged in the back cavity of middle casing (H2), be connected in power converging device flow of pressurized input shaft (S3c), 12 gear (g12), 13 gear (g13), 14 gear (g14) is arranged in the lumen of middle casing (H2), 12 gear (g12) by bearing housing on power converging device one output shaft 3rd gear (S3b), 13 gear (g13), 14 gear (g14) is connected on power converging device one output shaft 3rd gear (S3b).
2. big-power tractor infinitely variable transmission according to claim 1, is characterized in that: torque-splitting transmission (2) comprising: transmission input shaft (S1), the first gear (g1), the second gear (g2), the 42 gear (g42); Transmission input shaft (S1), the second gear (g2), the 42 gear (g42) are arranged on the ante-chamber of front casing (H1) by bearing, first gear (g1) is fixed on transmission input shaft (S1), and the second gear (g2), the 42 gear (g42) engage with the first gear (g1) respectively; Oil pump driving device (4) comprising: right side casing (H4), oil pump driving device output shaft (S4), oil pump driving device idler shaft (S5), the 9th gear (g9), the tenth gear (g10); Oil pump driving device (4) is positioned at the right side of gear box of tractor, is connected on middle casing (H2) by right side casing (H4) bolt; Oil pump driving device output shaft (S4) is arranged in right side casing (H4) by bearing, oil pump driving device idler shaft (S5) is packed in right side casing (H4), 9th gear (g9) is packed on oil pump driving device output shaft (S4), tenth gear (g10) is contained on oil pump driving device idler shaft (S5) by bearing housing, 9th gear (g9) is meshed with the tenth gear (g10), and the tenth gear (g10) is meshed with the 11 gear (g11) being arranged in gearbox right part casing (H2) lumen.
3. big-power tractor infinitely variable transmission according to claim 1, is characterized in that: motor power output unit (9) comprising: left side casing (H5), motor power output unit idler shaft (S9), motor power output unit input shaft (S10), the 24 gear (g24), the 25 gear (g25), the 26 gear (g26), the 27 gear (g27), the 20 octadentate wheel (g28), the 29 gear (g29), motor power output unit (9) is positioned at the left side of gear box of tractor, is connected on middle casing (H2) by left side casing (H5) bolt, motor power output unit idler shaft (S9) is packed in left side casing (H5), motor power output unit input shaft (S10) is arranged in left side casing (H5) by bearing, 26 gear (g26) and the 20 octadentate are taken turns (g28) and are fixed on motor power output unit input shaft (S10), 24 gear (g24) and the 25 gear (g25) are fixed together, 27 gear (g27) and the 29 gear (g29) are fixed together, be contained on motor power output unit idler shaft (S9) respectively by bearing housing, 25 gear (g25) is meshed with the 26 gear (g26), 27 gear (g27) is taken turns (g28) with the 20 octadentate and is meshed, 24 gear (g24) is meshed with the 16 gear (g16) in power converging device flow of pressurized input shaft (S3c).
4. big-power tractor infinitely variable transmission according to claim 1, is characterized in that: power flow concentration transmission device (3) comprising: front planet row (P1), rear planet row (P2), be arranged in the ante-chamber of middle casing (H2); The 3rd gear (g3) on front planet row (P1) is fixed on power converging device two output shaft 4th gear (S3a) of hydro-mechanical transmission device (1), 4th gear (g4), is meshed with the 3rd gear (g3), the 5th gear (g5) respectively by bearing housing on front-seat planet carrier (J1); Rear seniority among brothers and sisters carrier (J2) on rear planet row (P2) is fixed on power converging device one output shaft 3rd gear (S3b) of hydro-mechanical transmission device (1), 7th gear (g7) by bearing housing, is taken turns (g8) be meshed with the 6th gear (g6), octadentate respectively on rear seniority among brothers and sisters carrier (J2); Octadentate wheel (g8) of rear planet row (P2) is connected with front planet row (P1) front-seat planet carrier (J1), flow input shaft (S3) with the power converging device machinery of hydro-mechanical transmission device (1) to be again connected, 5th gear (g5) of front planet row (P1) is connected with the 6th gear (g6) of rear planet row (P2), then is connected with power converging device flow of pressurized input shaft (S3c) of hydro-mechanical transmission device (1); Pump motor hydraulic transmission (5) comprising: Variable plunger pump (PU), quantitative plunger motor (MO), Variable plunger pump (PU), quantitative plunger motor (MO) are connected with pipeline, be arranged on oil pump driving device (4), motor power output unit (9) respectively, Variable plunger pump (PU) is connected with the oil pump driving device output shaft (S4) of oil pump driving device (4), and quantitative plunger motor (MO) is connected with the motor power output unit input shaft (S10) of motor power output unit (9).
5. big-power tractor infinitely variable transmission according to claim 1, it is characterized in that: advance transmission device (7) comprising: forward drive device input shaft (S6b), forward clutch (KF), the 19 gear (g19), be positioned at the right middle of gear box of tractor, forward drive device input shaft (S6b) is arranged on the inner chamber of rear box (H3) by bearing, the 3rd dividing plate (C3) is stretched out in its front end; Forward clutch (KF) is fixed on forward drive device input shaft (S6b), and the 19 gear (g19), together with the case weld of forward clutch (KF), is contained on forward drive device input shaft (S6b) by bearing housing.
6. big-power tractor infinitely variable transmission according to claim 1, it is characterized in that: reverse gear device (11) comprising: Reversing Clutch input shaft (S12), Reversing Clutch (KR), the 32 gear (g32), the 34 gear (g34), be positioned at the lower right part of gear box of tractor; Reversing Clutch input shaft (S12) is arranged on by bearing in the ante-chamber of middle casing (H2), and the lumen entering middle casing (H2) is stretched out in its rear end; Reversing Clutch (KR), the 32 gear (g32) are packed on Reversing Clutch input shaft (S12), are arranged in the ante-chamber of middle casing (H2), lumen respectively; 34 gear (g34) is contained on Reversing Clutch input shaft (S12) by bearing housing, is arranged on the ante-chamber of middle casing (H2).
7. big-power tractor infinitely variable transmission according to claim 1, it is characterized in that: four-wheel drive transmission device (8) comprising: propons clutch output shaft (S8), front wheel driving clutch (K4W), the 22 gear (g22), be positioned at the bottom of gear box of tractor, be arranged on the back cavity of middle casing (H2), the inner chamber of middle casing (H3) and the 3rd dividing plate (C3) therebetween; Propons clutch output shaft (S8) is arranged on the inner chamber of rear box (H3) by bearing, its front end is stretched out the 3rd dividing plate (C3) and is connected with propons; Front wheel driving clutch (K4W) is fixed on propons clutch output shaft (S8), and the 22 gear (g22), together with the case weld of front wheel driving clutch (K4W), is contained on propons clutch output shaft (S8) by bearing housing.
8. big-power tractor infinitely variable transmission according to claim 1, it is characterized in that: power take-off (6) comprising: power take-off input shaft (S2b), output shaft of power output device (Sp), the 15 gear (g15), the 17 gear (g17), be positioned at the middle part of gear box of tractor; Power take-off input shaft (S2b), output shaft of power output device (Sp) are arranged on the inner chamber of rear box (H3) by bearing, the 3rd dividing plate (C3) is stretched out in the front end of power take-off input shaft (S2b), be connected with oil pump driving device input shaft (S2a) by spline housing, output shaft of power output device (Sp) is stretched out rear box (H3) and is connected with pto＝power take-off; 15 gear (g15), the 17 gear (g17) are meshed, and are positioned at the inner chamber of rear box (H3), are fixed in respectively in power take-off input shaft (S2b), output shaft of power output device (Sp).
9. big-power tractor infinitely variable transmission according to claim 1, it is characterized in that: dead axle variable speed drive (10) comprising: two gears clutch output shaft (S6), one or three gears clutch output shaft (S6a), reversible drive device output shaft (S7), back axle input shaft (S7a), hydraulic pressure gear clutch output shaft (SH), four gears clutch output shaft (S11), hydraulic pressure gear clutch (KH), one gear clutch (K1), two gears clutch (K2), three gears clutch (K3), four gears clutch (K4), tenth octadentate wheel (g18), 20 gear (g20), 21 gear (g21), 23 gear (g23), 30 gear (g30), 31 gear (g31), 33 gear (g33), 35 gear (g35), 36 gear (g36), 37 gear (g37), 30 octadentate wheel (g38), 39 gear (g39), two gears clutch output shaft (S6), one or three gears clutch output shaft (S6a) are positioned at the right middle of gearbox, the back cavity of front casing (H1) is arranged on respectively by bearing, in the lumen of middle casing (H2), the rear ends of two gears clutch output shaft (S6) are stretched out the first dividing plate (C1) and are kept off clutch output shaft (S6a) at the ante-chamber and or three of middle casing (H2) and be connected by spline housing, the rear end of one or three gears clutch output shaft (S6a) is stretched out second partition (C2) and is connected with the forward drive device input shaft (S6b) of advance transmission device (7) by spline housing, two gears clutch (K2) are positioned at the back cavity of front casing (H1), be fixed on two gear clutch output shafts (S6), 39 gear (g39) is together with two case weld keeping off clutch (K2), be contained on two gear clutch output shafts (S6) by bearing housing, be meshed with the 40 gear (g40) of hydro-mechanical transmission device (1), one gear clutch (K1), three gears clutch (K3), 33 gear (g33) is arranged in the lumen of casing (H2), be fixed on one or three gears clutch output shaft (S6a) successively, 33 gear (g33) is upper the 32 affixed gear (g32) with reverse gear device (11) respectively, 12 gear (g12) of the upper suit of hydro-mechanical transmission device (1) is meshed, tenth octadentate wheel (g18), 31 gear (g31) keeps off clutch (K1) with one respectively, the case weld of three gears clutch (K3) together, be contained on one or three gears clutch output shaft (S6a) by bearing housing, with the 14 gear (g14) of hydro-mechanical transmission device (1), 13 gear (g13) is meshed, reversible drive device output shaft (S7), back axle input shaft (S7a) is positioned at the middle and lower part of gearbox, middle casing (H2) is arranged on respectively by bearing, the inner chamber of rear box (H3), the first dividing plate (C1) is stretched out in the front end of reversible drive device output shaft (S7), second partition (C2) is stretched out in the rear end of reversible drive device output shaft (S7), back axle input shaft (S7a) front end is stretched out rear box (H3) and is connected by spline housing with the rear end of reversible drive device output shaft (S7), back axle input shaft (S7a) rear end is stretched out rear box (H3) and is connected with back axle, 30 octadentate wheel (g38), 37 gear (g37), 21 gear (g21), 20 gear (g20) lays respectively at the back cavity of front casing (H1), the ante-chamber of middle casing (H2), the back cavity of middle casing (H2), the inner chamber of rear box (H3), 30 octadentate wheel (g38), 37 gear (g37) is fixed on reversible drive device output shaft (S7), 21 gear (g21), 20 gear (g20) is on back axle input shaft (S7a), 37 gear (g37) is meshed with upper the 34 gear (g34) be set with of reverse gear device (11), 21 gear (g21), 20 gear (g20) respectively with the 22 gear (g22) be sleeved on four-wheel drive transmission device (8), the 19 gear (g19) on advance transmission device (7) is meshed, four gears clutch output shaft (S11) are positioned at the left portion of gearbox, the back cavity of front casing (H1) is arranged on by bearing, 35 gear (g35), four gears clutch (K4) are fixed on four gear clutch output shafts (S11) respectively, 36 gear (g36) is together with four case weld keeping off clutch (K4), be contained on four gear clutch output shafts (S11) by bearing housing, 35 gear (g35), 36 gear (g36) takes turns (g38) with the 30 octadentate be fixed on reversible drive device output shaft (S7) respectively, the 41 gear (g41) on hydro-mechanical transmission device (1) is meshed, hydraulic pressure gear clutch output shaft (SH) is positioned at the left portion of gearbox, the lumen of middle casing (H2) is arranged on by bearing, 30 gear (g30), hydraulic pressure gear clutch (KH) is fixed on hydraulic pressure gear clutch output shaft (SH) respectively, together with the case weld that 23 gear (g23) and hydraulic pressure keep off clutch (KH), be contained on hydraulic pressure gear clutch output shaft (SH) by bearing housing, 30 gear (g30), 23 gear (g23) respectively with the 12 gear (g12) be sleeved on power converging device one output shaft 3rd gear (S3b), the 29 gear (g29) on motor power output unit idler shaft (S9) is meshed.
CN201310472545.8A 2013-10-12 2013-10-12 Big-power tractor infinitely variable transmission Active CN103511598B (en)

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CN104329433B (en) * 2014-08-27 2017-04-26 江苏大学 Double-flow transmission gearbox for hydraulic machine of tractor
CN111306279B (en) * 2020-02-21 2021-08-03 江苏大学 Single-pump-control double-motor mechanical hydraulic composite transmission device

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