CN201944225U

CN201944225U - Homonymous multivariable gear differential step-less transmission for vehicle

Info

Publication number: CN201944225U
Application number: CN2011200587991U
Authority: CN
Inventors: 罗永�
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-02-19
Filing date: 2011-02-19
Publication date: 2011-08-24
Anticipated expiration: 2021-02-19

Abstract

A homonymous multivariable gear differential step-less transmission for a vehicle is a gear step-less speed change device for the transmission of a high-power vehicle. The device adopts a speed change mode that the rated speed reduction of a gear and the planetary homonymous variable difference generated by hydraulic damping lead to the gradual change of rotation speed by output, and the cyclic variable of the output rotation speed and the hydraulic damping leads the output gear to generate step-less speed change under a meshing state with uninterrupted acting force. For the transmission, as the transmission power is high, the speed change ratio is high, the speed change performance is excellent, and the mechanical strength is high, the transmission can be arranged on a vehicle with a large output volume, an SUV (Sports Utility Vehicle), a bus, a truck and even a heavy-duty car to realize the step-less speed change. The transmission has a simple structure, is made of normal materials, and has a low manufacturing cost and long service life.

Description

The automobile-used gear of multivariable in the same way differential stepless speed variator

Affiliated technical field

The present invention relates to the automobile stepless speed changes devices of a kind of high pulling torque, high-power transmission.

Background technique

Stepless change can improve the driving quality of automobile, to the full extent promote motor the transmission efficiency, save fuel oil, be that industry is that generally acknowledge, optimal automobile variable speed mode.But at present the stepless speed variator that can on automobile, use all as the mechanical friction class as CVT, DCT, KRG etc.As everyone knows, the transmission usefulness of mechanical friction is the size that depends on the mechanical friction coefficient; High pulling torque, variable transmission meeting high-power, the hypermutation ratio make mechanical friction class speed changer produce high-intensity friction and make mechanical accelerated wear test and working life of causing mechanical transmission usefulness to reduce, break down or reduce machinery fast, thereby present friction class stepless speed variator can only be assemblied on little discharge capacity, the mechanically stressed less car and use, if make big discharge capacity car, SUV, big bus so that heavily card realize stepless change, have only the kind of drive that adopts gear engagement to realize undoubtedly.As everyone knows, meshed transmission gear have that driving torque is big, usefulness transmit high, the mechanical strength long-life is long, the characteristics of technology maturation.But present speed change gear all is step change, after being about to driving gear and a fixed rotating speed breakaway force drive connection, set up the power drive connection, make output that a grade state down conversion rotating speed arranged with another fixed rotating speed, and can not make gear and gear transmission, form input and under the continual engagement of active force, set up drive connection, make the gradual change of exporting the generation rotating speed and form stepless change with several output speed values.

Summary of the invention

Under the continual engagement of active force, set up drive connection, make output produce the gradual change of rotating speed and form stepless change for transmission, the formation input that can make gear and gear, the invention provides a kind of automobile-used gear of multivariable in the same way differential stepless speed variator with several output speed values.This stepless speed variator is full fixed axis gear engagement driving, output can on several tachometer values with import that differential in the same way rotates, variable transmission resistance can make the transmission of gear under the continual engagement of active force, make output produce rotating speed gradual change, form stepless change.The mechanical strength height of this speed changer, big, the mechanical long service life of the rate of passing on Gong, gear ratio height.

The technical solution adopted for the present invention to solve the technical problems is: a kind of automobile-used gear of multivariable in the same way differential stepless speed variator comprises gearbox case, sun gear, planetary pinion, planetary wheel carrier, gear ring wheel, output gear.The speed changer central shaft of central position rotation in the enclosure is an input shaft, sun gear is a driving wheel, with the concentric one of central shaft, output gear rotates on central shaft with one heart, the gear ring wheel is an end bearing, on central shaft, rotate with one heart, be fixed in the planetary wheel carrier of the directed locking of contract formula directional clutch on the shell, on central shaft, do with central shaft and turn to identical directed concentric rotation, planetary pinion in the planetary wheel carrier and sun gear, gear ring wheel internal tooth engagement driving, planetary pinion duplex tooth and output gear engagement driving, turning to of sun gear and output gear to rotating in the same way, it is gearing down that sun gear closes to the engagement driving of output gear, on the outer casing inner wall of output terminal, fix a cover fluid power gear pump, fluid power gear pump driving gear and output gear duplex tooth engagement driving, on the outer casing inner wall of input end, fix a cover liquid oil damping gear pump, damping gear pump driving gear and gear ring wheel duplex tooth engagement driving, the directed coupling of threading off of damping gear pump driving gear and pump shaft, when rotating in the same way with central shaft, the gear ring wheel threads off, one cover hydraulic pressure variable valve is installed on the liquid oil return line of the oil output of damping gear pump liquid and input and fuel reserve tank, the be subjected to thrust and the valve spring of valve interact, fluid power propulsion device of limiting the quantity of is installed on the liquid oil ring road of the output of fluid power gear pump and input and fuel reserve tank, oil circuit forms loop by its hole of limiting the quantity of, fluid power propulsion device and the hydraulic pressure variable valve valve interlock of limiting the quantity of, limit the quantity of propulsion device and over reduction spring of fluid power interacts, the over reduction spring force is greater than valve spring elastic force, at liquid oil cylinder of planetary wheel carrier internal fixation, crankshaft gear and sun gear engagement, when sun gear rotates, bent axle drives crankshaft-link rod and the in-oil cylinder piston of liquid is released the oil of the liquid in the liquid oil cylinder and suck, move reciprocatingly, fix a curved logical rotation column valve at the oil export of liquid oil cylinder liquid, liquid oil is inhaled into and releases by the curved logical place of curved logical rotation column valve, to bend the curved port of logical rotation column valve seals with rubber bag tank, tooth bar engagement on column valve driving gear and the centrifugal steel column, the centrifugal force of centrifugal steel column and steel column spring interact.Because planetary wheel carrier is by the contract formula directional clutch locking on the shell, when vehicle starting, when motor drive central shaft begins to rotate, sun gear drives planetary pinion, planetary pinion duplex tooth driving output gear is done output gear and turned to identical high pulling torque gearing down with sun gear, and gear ring is oppositely idle running with it.Along with gas strengthens, engine speed rises to when the highest, the rotating speed of output gear rises to the gearing down maximum value, the flow of fluid power gear pump liquid oil increases progressively, hydraulic pressure variable valve successively decreases the throughput of liquid oil in the damping gear pump liquid oil return line, the rotational resistance of damping gear pump increases progressively, the reverse speed of gear ring wheel successively decreases, planetary pinion be subjected to the rotational resistance of gear ring wheel reaction force, begin to do with central shaft and turn to identical driven circumferential rotation, planetary wheel carrier to rotate simultaneously thereupon; The engagement gearing down of planetary pinion duplex tooth and output gear fades to the speed change transmission by the constant speed transmission.The increment that speed discrepancy in the same way successively decreases and the output gear rotating speed increases progressively that forms the turnover of central shaft and planetary pinion circulates, stops backward rotation until hydraulic pressure variable valve valve closing liquid oil return line, gear ring wheel, makes the formation maximum value of the driven turnover rotating speed of planetary pinion.Simultaneously, having enough to meet the need in the planet carrier that rotates synchronously with planetary pinion, the centrifugal force that produces on the centrifugal steel column begins the reaction force greater than the steel column spring, cause centrifugal steel column to begin to drive the rotation of curved logical rotation column valve, cause liquid oil cylinder to the liquid oil throughput of curved logical rotation column valve unit area to begin to successively decrease, cause piston to move reciprocatingly, the frequency that the in-oil cylinder liquid oil of liquid is released and sucked is successively decreased, the engagement driving resistance of crankshaft gear and sun gear is increased progressively, cause by planetary pinion turnover drive planetary wheel carrier and do idle running in the same way, fade to and begin to drive the rotation that planetary pinion has enough to meet the need in the same way by planetary wheel carrier and surmount, the increment circulation that forms the planetary wheel carrier rotating speed increases progressively, and closes passing through of liquid oil until the curved through post valve of rotation.This moment, piston stopped to-and-fro motion, and planetary pinion and planetary pinion duplex tooth stop rotation, and planetary pinion and gear ring wheel disappear with the speed discrepancy in the same way of central shaft.Planetary pinion duplex tooth under the common drive of central shaft and planetary wheel carrier, circumferentially promote the synchronous in the same way high speed rotating of output gear and central shaft, thereby finish under the continual state of meshed transmission gear active force, output gear by static to rotation gradual change at a high speed.

The invention has the beneficial effects as follows that this device for mechanical intensity height, transmission power is big, gear ratio is high, gearshift performance is excellent, can make all kinds of automobiles realize stepless change, improve it and drive quality, save fuel oil, reduce discharging.Can adopt the conventional material manufacturing, simple in structure, product price is low, long service life.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is that this transmission shaft is to the face of throwing figure.

Fig. 2 axially throws face figure for this speed changer embodiment.

1. gearbox cases among the figure, 2. planetary pinion duplex tooth, 3. planetary pinion, 4. gear ring is taken turns internal tooth, 5. planetary wheel carrier, 6. gear ring wheel, 7. gear ring is taken turns duplex tooth, 8. central shaft, 9. output gear duplex tooth, 10. fluid power gear pump driving gear, 11. fluid power gear pumps, 12. output gears, 13. crankshaft gear, 14. liquid oil, 15. curved logical rotation column valves, the propulsion device 16. steel column spring, 17. fluid power are limited the quantity of, the 18. directed couplings of threading off, 19. damping gear pump driving gear, 20. whole tooth splined shafts, 21. bent axles, 22. rubber bag tank, 23. pistons, 24. centrifugal steel columns, 25. the column valve driving gear, 26. contract formula directional clutch, 27. sun gears, 28. liquid oil ring road, 29. hydraulic pressure variable valves, 30. over reduction springs, 31. valve, 32. valve spring, 33. liquid oil return lines, 34. damping gear pumps.

Embodiment

A kind of automobile-used gear of multivariable in the same way differential stepless speed variator comprises gearbox case (1), sun gear (27), planetary pinion (3), planetary wheel carrier (5), gear ring wheel (6), output gear (12).The speed changer central shaft (8) that rotate central position in the enclosure is an input shaft, sun gear (27) is a driving wheel, with the concentric one of central shaft (8), output gear (12) is gone up with one heart at central shaft (8) and is rotated, gear ring wheel (6) is an end bearing, go up rotation with one heart at central shaft (8), be fixed in the planetary wheel carrier (5) of the directed locking of contract formula directional clutch (26) on the shell, on central shaft (8), do with central shaft (8) and turn to identical directed concentric rotation, planetary pinion (3) in the planetary wheel carrier (5) and sun gear (27), gear ring wheel internal tooth (4) engagement driving, planetary pinion duplex tooth (2) and output gear (12) engagement driving, turning to of sun gear (27) and output gear (12) to rotating in the same way, it is gearing down that sun gear (27) closes to the engagement driving of output gear (12), on the outer casing inner wall of output terminal, fix a cover fluid power gear pump (11), fluid power gear pump driving gear (10) and output gear duplex tooth (9) engagement driving, on the outer casing inner wall of input end, fix a cover liquid oil damping gear pump (34), damping gear pump driving gear (19) and gear ring wheel duplex tooth (7) engagement driving, damping gear pump driving gear (19) and the directed coupling (18) of threading off of pump shaft, when rotating in the same way with central shaft, the gear ring wheel threads off, go up installation one cover hydraulic pressure variable valve (29) at the liquid oil return line (33) of the oil output of damping gear pump liquid and input and fuel reserve tank, the be subjected to thrust and the valve spring (32) of valve (31) interact, go up fluid power of installation propulsion device (17) of limiting the quantity of on the output of fluid power gear pump liquid oil and the liquid oil ring road (28) of input and fuel reserve tank, oil circuit forms loop by its hole of limiting the quantity of, fluid power propulsion device (17) and hydraulic pressure variable valve valve (31) interlock of limiting the quantity of, limit the quantity of propulsion device (17) and over reduction spring (30) of fluid power interacts, over reduction spring (30) elastic force is greater than valve spring (32) elastic force, at liquid oil cylinder of planetary wheel carrier (5) internal fixation, crankshaft gear (13) and sun gear (27) engagement, when sun gear (27) rotates, bent axle (21) drives crankshaft-link rod and the in-oil cylinder piston of liquid (23) is released the liquid oil (14) in the liquid oil cylinder and suck, move reciprocatingly, fix a curved logical rotation column valve (15) at the oil export of liquid oil cylinder liquid, liquid oil (14) is inhaled into and releases by the curved logical place of curved logical rotation column valve (15), to bend the curved port of logical rotation column valve seals with rubber bag tank (22), tooth bar engagement on column valve transmitting gear (25) and the centrifugal steel column (24), the centrifugal force of centrifugal steel column (24) and steel column spring (16) interact.Because planetary wheel carrier (5) is by contract formula directional clutch (26) locking on the shell, work as vehicle starting, motor drives central shaft (8) when beginning to rotate, sun gear (27) drives planetary pinion (3), planetary pinion duplex tooth (2) driving output gear (12) is done output gear (12) and is turned to identical high pulling torque gearing down with sun gear (27), at this moment, curved logical rotation column valve (15) and hydraulic pressure variable valve (29) valve (31) are in opening state, and damping gear pump (34) liquid oil return line (33) connects, curved logical and the liquid oil cylinder of curved logical rotation column valve (15) connect; Do and the rotation of central shaft (8) switched in opposite, the rotation that driving damping gear pump (34) is done the undamped state with the gear ring wheel (6) of planetary pinion (3) engagement; Drive bent axle (21) and crankshaft-link rod with the crankshaft gear (13) of sun gear (27) engagement, make piston (23) in the liquid oil cylinder, do to-and-fro motion under the non-resistance state.Along with gas strengthens, engine speed rises to when the highest, the rotating speed of output gear (12) rises to the gearing down maximum value thereupon, output gear duplex tooth (9) drives fluid power gear pump (11), make the flow of liquid oil begin to increase, liquid oil begins reaction force greater than valve spring (32) to the limit the quantity of thrust of propulsion device (17) of fluid power, make limit the quantity of propulsion device (17) motion of fluid power, cause hydraulic pressure variable valve valve (31) to reduce the throughput of liquid oil in the damping gear pump liquid oil return line (33) gradually, cause damping gear pump (34) to begin to produce back pressure, rotational resistance is successively decreased the rotational velocity of damping gear pump and gear ring wheel (6), and planetary pinion (3) is subjected to the reaction force of gear ring wheel (6) rotational resistance, begin to do with central shaft (8) and turn to identical driven circumferential rotation, planetary wheel carrier (5) rotates simultaneously thereupon; Planetary pinion duplex tooth (2) fades to the speed change transmission with the engagement gearing down of output gear (12) by the constant speed transmission.The rotating speed of output gear (12) increase progressively cause fluid power gear pump (11) rotating speed and liquid oil to fluid power limit the quantity of that the thrust of propulsion device (17) increases progressively, the throughput of liquid oil in hydraulic pressure variable valve valve (31) in damping gear pump (34) the liquid oil return line (33) successively decreased, damping gear pump (34) back pressure increases progressively, gear ring is taken turns (6) reverse speed and successively decreased, the speed discrepancy in the same way that forms central shaft (8) and planetary pinion (3) turnover successively decreases, until hydraulic pressure variable valve valve (31) close liquid oil return line (33), gear ring wheel (6) stops backward rotation.At this moment, the oil pressure that continue to raise makes over reduction spring (30) begin compression after valve spring (32) compression puts in place, makes fluid power gear pump liquid oil form big flow circuit through relief passage, makes the fluid power propulsion device of limiting the quantity of keep constant voltage.Gear ring wheel (6) stops the maximum value that backward rotation forms the driven turnover rotating speed of planetary pinion (3).At this moment, having enough to meet the need in the planetary wheel carrier (5) that rotates synchronously with planetary pinion (3), the centrifugal force that centrifugal steel column (24) upward produces begins the reaction force greater than steel column spring (16), cause centrifugal steel column (24) setting in motion, rotate with the motion of tooth bar with column valve driving gear (25) beginning of centrifugal steel column (24) upper rack engagement, drive curved logical rotation column valve (15) rotation, cause liquid oil cylinder to liquid oil (14) throughput of the curved logical unit area of curved logical rotation column valve (15) to begin to successively decrease, cause piston (23) to move reciprocatingly, the frequency that the in-oil cylinder liquid oil of liquid (14) is released and sucked is successively decreased, the engagement driving resistance of crankshaft gear (13) and sun gear (27) is increased progressively, cause by planetary pinion (3) turnover drive planetary wheel carrier (5) and do idle running in the same way, fade to and begin to drive the rotation that planetary pinion (3) has enough to meet the need in the same way by planetary wheel carrier (5) and surmount, the rotating speed in the same way that makes output gear (12) is continuous increasing incessantly.The rotation of planetary wheel carrier (5) surmounts the gear ring wheel (6) that causes with planetary pinion (3) engagement and begins to rotate in the same way with central shaft (8), directed coupling (18) dropout of threading off of pump shaft, gear ring wheel (6) idle running.The rotation of planetary wheel carrier (5) surmounts causes the centrifugal force of centrifugal steel column (24) to increase progressively, liquid oil cylinder to liquid oil (14) throughput of the curved logical unit area of curved logical rotation column valve (15) is successively decreased, the engagement driving resistance of crankshaft gear (13) and sun gear (27) increases progressively, form the increment circulation of planetary wheel carrier rotating speed, close passing through of liquid oil (14) until curved logical rotation column valve (15), piston this moment (23) stops to-and-fro motion, planetary pinion (3) and planetary pinion duplex tooth (2) stop rotation, planetary pinion (3) and planetary wheel carrier (5) disappear with the speed discrepancy in the same way of central shaft (8), planetary pinion duplex tooth (2) is under the synchronous drive of central shaft (8) and planetary wheel carrier (5), circumferentially promoting output gear (12) rotates with central shaft (8) synchronous high-speed.Thereby this speed changer is finished under the continual state of meshed transmission gear active force, output gear (12) is by static rotation gradual change at a high speed.Under motor constant speed operating condition, the variation of any value of automobile running resistance and traction gravity all can be because of the output gear rotation speed change causes the rotation of planetary pinion duplex tooth (2) and the rotation speed change of turnover, thereby cause the synchronous variation of output torque value; When automobile begins to climb, output gear (12) rotating speed begins to descend, fluid power gear pump (11) synchronization descends, damping gear pump (34) synchronization rises, gear ring wheel (6) reverse speed rises synchronously, centrifugal steel column (24) centrifugal force descends with planetary wheel carrier (5) synchronization, the circumferential slip of central shaft (8) and planetary pinion (3) is risen synchronously, planetary pinion duplex tooth (2) and output gear (12) engagement gearing down rotation synchronization rises, and causes output torque to rise under the constant state of engine speed.When reverse travel, reversing drive coupling and whole tooth splined shaft (20) coupling make reverse travel produce stepless change.

Claims

1. the automobile-used gear of multivariable in the same way differential stepless speed variator, comprise gearbox case (1), sun gear (27), planetary pinion (3), planetary wheel carrier (5), gear ring wheel (6), output gear (12) is characterized in that: the speed changer central shaft (8) that rotate central position in the enclosure is an input shaft, sun gear (27) is a driving wheel, with the concentric one of central shaft (8), output gear (12) is gone up with one heart at central shaft (8) and is rotated, gear ring wheel (6) is an end bearing, go up rotation with one heart at central shaft (8), be fixed in the planetary wheel carrier (5) of the directed locking of contract formula directional clutch (26) on the shell, on central shaft (8), do with central shaft (8) and turn to identical directed concentric rotation, planetary pinion (3) in the planetary wheel carrier (5) and sun gear (27), gear ring wheel internal tooth (4) engagement driving, planetary pinion duplex tooth (2) and output gear (12) engagement driving, turning to of sun gear (27) and output gear (12) to rotating in the same way, it is gearing down that sun gear (27) closes to the engagement driving of output gear (12), on the outer casing inner wall of output terminal, fix a cover fluid power gear pump (11), fluid power gear pump driving gear (10) and output gear duplex tooth (9) engagement driving, on the outer casing inner wall of input end, fix a cover liquid oil damping gear pump (34), damping gear pump driving gear (19) and gear ring wheel duplex tooth (7) engagement driving, damping gear pump driving gear (19) and the directed coupling (18) of threading off of pump shaft, when rotating in the same way with central shaft, the gear ring wheel threads off, go up installation one cover hydraulic pressure variable valve (29) at the liquid oil return line (33) of the oil output of damping gear pump liquid and input and fuel reserve tank, the be subjected to thrust and the valve spring (32) of valve (31) interact, go up fluid power of installation propulsion device of limiting the quantity of on the output of fluid power gear pump liquid oil and the liquid oil ring road (28) of input and fuel reserve tank, oil circuit forms loop by its hole of limiting the quantity of, fluid power propulsion device (17) and hydraulic pressure variable valve valve (31) interlock of limiting the quantity of, limit the quantity of propulsion device (17) and over reduction spring (30) of fluid power interacts, over reduction spring (30) elastic force is greater than valve spring (32) elastic force, at liquid oil cylinder of planetary wheel carrier (5) internal fixation, crankshaft gear (13) and sun gear (27) engagement, when sun gear (27) rotates, bent axle (21) drives crankshaft-link rod and the in-oil cylinder piston of liquid (23) is released the liquid oil (14) in the liquid oil cylinder and suck, move reciprocatingly, fix a curved logical rotation column valve (15) at liquid oil cylinder liquid oil outlet, liquid oil (14) is inhaled into and releases by the curved logical place of curved logical rotation column valve (15), the curved port of curved logical rotation column valve is sealed with rubber bag tank (22), tooth bar engagement on column valve driving gear (25) and the centrifugal steel column (24), the centrifugal force of centrifugal steel column (24) and steel column spring (16) interact.