CN101886689B - Automobile variable speed power transmission mechanism employing hydraulic motor - Google Patents
Automobile variable speed power transmission mechanism employing hydraulic motor Download PDFInfo
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- CN101886689B CN101886689B CN2010102339712A CN201010233971A CN101886689B CN 101886689 B CN101886689 B CN 101886689B CN 2010102339712 A CN2010102339712 A CN 2010102339712A CN 201010233971 A CN201010233971 A CN 201010233971A CN 101886689 B CN101886689 B CN 101886689B
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Abstract
The invention discloses an automobile variable speed power transmission mechanism employing a hydraulic motor, relates to a power transmission mechanism of an automobile automatic transmission, and aims to combine an AT step automatic transmission and hydraulic motor stepless speed changing into the automobile variable speed power transmission mechanism employing the hydraulic motor. The power transmission mechanism has the advantage of transferring high torque by using the AT step automatic transmission when the speed of the power transmission mechanism is between a forward gear 1 and a forward gear 2 and has the advantage of realizing stepless speed changing by using the hydraulic motor when the speed of the power transmission mechanism is over the forward gear 2. The design points are that: the hydraulic motor is entirely arranged on a transmission shaft which rotates at a high speed, so the starting point of the overall rotation speed of the hydraulic motor is increased; when the hydraulic motor entirely rotates at the high speed and outputs the torque to drive a working element, the driven working element obtains a higher rotation speed; and thus the design can solve the defect that the hydraulic motor cannot output the torque at the high speed.
Description
Technical field
The present invention relates to the power-transmitting unit of the power-transmitting unit of automatic gearbox, particularly automatic gear for automobile.
Background technique
At present, the AT that uses on the automobile has a grade automatic transmission, and what the driving mechanism of AT adopted usually is that the epicyclic train combination is as power-transmitting unit.Its advantage is to transmit big torque, and its shortcoming is a complex structure, and complicated structure can cause manufacture cost to increase; Complicated structure can be brought complex failure, and when the high speed transmission, transmission is renderd a service low; Fuel consumption is big, can not adapt to the developing direction of energy-saving and emission-reduction.
At present, the CVT that uses on the automobile is a ST, and what the driving mechanism of CVT adopted usually is Steel Belt and drive pulley friction driving.Its advantage is simple in structure, and transmission efficiency is high, and the use result of CVT is more fuel-efficient than AT.Its shortcoming is to transmit big torque; CVT transmits big torque if desired; Just must strengthen the friction factor that oil pressure increases Steel Belt and drive pulley, be exactly consumed energy when strengthening oil pressure, when strengthening oil pressure, also must strengthen the intensity and the volume of Steel Belt and drive pulley; After adding hard intensity and volume, also be not suitable for installing the CVT of big volume on the riding vehicle.Say again; Friction driving causes Steel Belt and drive pulley wearing and tearing easily.
At present; Most engineering machinery uses oil hydraulic motor usually; So-called engineering machinery is: excavator, loader, handling machinery etc., the advantage of oil hydraulic motor is that low speed can be exported big torque, and controls oil pressure again and flow just can be realized stepless change through hydraulic control system.The shortcoming of oil hydraulic motor is when high speed, to export big torque, can only be applicable to the engineering machinery of low speed, so does not also use oil hydraulic motor to come transferring power as stepless change on the riding vehicle.
At present: the automatic transmission of riding vehicle all is by the computer controlled hydraulic system; Hydraulic system is controlled mechanical power-transmitting unit again; Thereby accomplish the function of automatic transmission.
Summary of the invention
The object of the invention: be to have the advantage of grade automatic transmission and the advantage composite design of hydraulic motor stepless speed change to become a kind of automobile variable speed power transmission mechanism that uses oil hydraulic motor above-mentioned AT.This power-transmitting unit is when advancing 1 grade to 2 grades the speed of a motor vehicle; Adopt AT to have grade automatic transmission can transmit the advantage of big torque; This power-transmitting unit is when the speed of a motor vehicle of advancing more than 2 grades; Adopt oil hydraulic motor can realize infinite variable speed advantage, and automaticity is high, transmission system simple in structure.
For reaching above-mentioned purpose, use the automobile variable speed power transmission mechanism of oil hydraulic motor to comprise torque-converters 24, oil pump 23, input shaft 1, oil hydraulic motor 2, housing 20, overrunning clutch 19, first break 18, second break 17, the 3rd break 14, output shaft 10, first single planetary gear train, second single planetary gear train, the 3rd twin-stage epicyclic train;
Described first single planetary gear train comprises first sun gear 4, first planet wheel 3, first planet carrier 22, first ring gear 21; First sun gear 4 and first planet wheel 3 are meshed; First planet wheel 3 and first ring gear 21 are meshed, and first planet wheel 3 is located on first planet carrier 22.
Described second single planetary gear train comprises second sun gear 7, second planet wheel 6, second planet carrier 5, second ring gear 16; Second sun gear 7 and second planet wheel 6 are meshed; Second planet wheel 6 and second ring gear 16 are meshed, and second planet wheel 6 is located on second planet carrier 5.
Described the 3rd twin-stage epicyclic train comprises the 3rd sun gear 8, long planet wheel 9, the third line star frame 11, the 3rd ring gear 15, short planet wheel 12, the 4th ring gear 13, the 3rd sun gear 8 and long planet wheel 9 is meshed, long planet wheel 9 and the 3rd ring gear 15 are meshed; Long planet wheel 9 also is meshed with short planet wheel 12; Short planet wheel 12 and the 4th ring gear 13 are meshed, and long planet wheel 9 is located on the third line star frame 11 with short planet wheel 12.
The input end of described input shaft 1 and torque-converters 24 inner Joins; Described input shaft 1 is provided with oil hydraulic motor 2, and the output shaft of oil hydraulic motor 2 and first planet carrier 22 connect; The output middle-end of described input shaft 1 and second sun gear 7 connect; The output terminal of described input shaft 1 and the 3rd sun gear 8 connect.
Described first sun gear 4 and second planet carrier 5 connect; Second planet carrier 5 and the 3rd ring gear 15 connect; The input end of described output shaft 10 and the third line star frame 11 connect; Described first ring gear 21 is fixed on the housing 20; Described second ring gear 16 is provided with overrunning clutch 19, and overrunning clutch 19 is provided with first break 18; The 3rd ring gear 15 in described the 3rd twin-stage epicyclic train is provided with second break 17; The 4th ring gear 13 in described the 3rd twin-stage epicyclic train is provided with the 3rd break 14.
The input end of described input shaft 1 is provided with torque-converters 24, and torque-converters 24 is can be through the device of fluid power transmitting torque, and the effect that torque-converters 24 is set is can the power of engine flywheel be delivered to input shaft 1 through torque-converters 24.
As improvement, described torque-converters 24 is positioned at right-hand member and is connected with oil pump 23, and oil pump 23 is the devices that can be converted into mechanical energy the oil pressure energy; What the present invention adopted is crescent gear pump, and this oil pump has compact structure, and motion is steady, and output oil pressure is high.Oil pump is installed in the housing front of speed changer, and when the flywheel of motor rotated, the shell that is located at the torque-converters 24 on the flywheel also rotated simultaneously; Converter housing drives oil pump through a coupling band and rotates, thereby makes oil pump output oil pressure power, and this oil pressure is through the hydraulic system of automatic transmission computer control; Can control first break 18; Second break, 17, the three breaks 14, and control oil hydraulic motor 2 is realized stepless change.
Design advantage of the present invention is that oil hydraulic motor 2 integral body are located on the input shaft 1 of high-speed rotation; Oil hydraulic motor 2 whole rotating speeds have just increased like this; When oil hydraulic motor 2 whole high-speed rotation are exported torque when removing to drive first planet carrier 22 again; The rotating speed that first planet carrier 22 obtains is also just more increased, and design just can solve oil hydraulic motor and can not when high speed, export the shortcoming of torque like this; Owing to adopted torque-converters 24, therefore, when the shift position, need not trample clutch and can directly carry out, the automaticity of shift is high; Owing to be provided with the 3rd twin-stage epicyclic train, when realizing forward gears and retreating grade conversion, only need control the 3rd break 14 and can accomplish, therefore, transmission system simple in structure.
Description of drawings
Fig. 1 is for using the automobile variable speed power transmission mechanism schematic representation of oil hydraulic motor;
Wherein 1 is input shaft; 2 is oil hydraulic motor; 3 is first planet wheel; 4 is first sun gear; 5 is second planet carrier; 6 is second planet wheel; 7 is second sun gear; 8 is the 3rd sun gear; 9 are long planet wheel; 10 is output shaft; 11 is the third line star frame; 12 are short planet wheel; 13 is the 4th ring gear; 14 the 3rd breaks; 15 is the 3rd ring gear; 16 is second ring gear; 17 is second break; 18 is first break; 19 is overrunning clutch; 20 is housing; 21 is first ring gear; 22 is first planet carrier; 23 is oil pump; 24 is torque-converters.
Embodiment
The automobile variable speed power transmission mechanism of use oil hydraulic motor of the present invention also must be used automatic transmission computer controlled hydraulic system; Hydraulic system is controlled the automobile variable speed power transmission mechanism that uses oil hydraulic motor again, could accomplish the speed changing function that grade automatic speed changing adds the stepless automatic transmission combination.
Shown in Figure of description, use the automobile variable speed power transmission mechanism of oil hydraulic motor to comprise torque-converters 24, oil pump 23, input shaft 1, oil hydraulic motor 2, housing 20, overrunning clutch 19, first break 18, second break 17, the 3rd break 14, output shaft 10, first single planetary gear train, second single planetary gear train, the 3rd twin-stage epicyclic train.
Shown in Figure of description; Described first single planetary gear train comprises first sun gear 4, first planet wheel 3, first planet carrier 22, first ring gear 21; First sun gear 4 and first planet wheel 3 are meshed; First planet wheel 3 and first ring gear 21 are meshed, and first planet wheel 3 is located on first planet carrier 22; The main purpose that designs first single planetary gear train is: can be with the torque of oil hydraulic motor 2 outputs; Remove to drive first planet carrier 22 and drive first planet wheel 3 and in first ring gear 21, rotate counterclockwise; Drive first sun gear 4 simultaneously and clockwise rotate, and the speedup outputting power.
Shown in Figure of description; Described second single planetary gear train comprises second sun gear 7, second planet wheel 6, second planet carrier 5, second ring gear 16; Second sun gear 7 and second planet wheel 6 are meshed; Second planet wheel 6 and second ring gear 16 are meshed, and second planet wheel 6 is located on second planet carrier 5; The main purpose that designs second single planetary gear train is; 2 grades machine power transmission is used to advance.
Shown in Figure of description; Described the 3rd twin-stage epicyclic train comprises the 3rd sun gear 8, long planet wheel 9, the third line star frame 11, the 3rd ring gear 15, short planet wheel 12, the 4th ring gear 13, the 3rd sun gear 8 and long planet wheel 9 is meshed, long planet wheel 9 and the 3rd ring gear 15 are meshed; Long planet wheel 9 also is meshed with short planet wheel 12; Short planet wheel 12 and the 4th ring gear 13 are meshed, and long planet wheel 9 is located on the third line star frame 11 with short planet wheel 12; The main purpose that designs the 3rd twin-stage epicyclic train is; 1 grade of machine power transmission with reverse gear is used to advance.
Shown in Figure of description; Described first sun gear 4 and second planet carrier 5 connect; Second planet carrier 5 and the 3rd ring gear 15 connect, and designing main purpose like this is that the torque that oil hydraulic motor 2 is exported finally can be driven the 3rd ring gear 15, thereby obtains stepless change.
Shown in Figure of description, described first ring gear 21 is fixed on the housing 20; Described second ring gear 16 is provided with overrunning clutch 19, and overrunning clutch 19 is provided with first break 18; The 3rd ring gear 15 in described the 3rd twin-stage epicyclic train is provided with second break 17; The 4th ring gear 13 in described the 3rd twin-stage epicyclic train is provided with the 3rd break 14.
Shown in Figure of description, the input end of described input shaft 1 connects with torque-converters 24 inside mutually; Described input shaft 1 is provided with oil hydraulic motor 2; The output shaft of oil hydraulic motor 2 and first planet carrier 22 connect; The output middle-end of described input shaft 1 and second sun gear 7 connect; The outlet terminal of described input shaft 1 and the 3rd sun gear 8 connect;
Shown in Figure of description, the input end of described output shaft 10 and the third line star frame 11 connect.
Shown in Figure of description; The input end of described input shaft 1 is provided with torque-converters 24; Torque-converters 24 is can be through the device of fluid power transmitting torque; The effect that torque-converters 24 is set is can the power of engine flywheel be delivered to input shaft 1 through torque-converters 24, and described torque-converters 24 is mature technologies that present automatic gearbox adopts usually.
Shown in Figure of description, described torque-converters 24 is positioned at right-hand member and is connected with oil pump 23, and oil pump 23 is the devices that can be converted into mechanical energy the oil pressure energy; What the present invention adopted is crescent gear pump, and this oil pump has compact structure, and motion is steady, and output oil pressure is high.Oil pump is installed in the case of transmission front, and when the flywheel of motor rotated, the shell that is located at the torque-converters 24 on the flywheel also rotated simultaneously; Converter housing drives oil pump through a coupling band and rotates, thereby makes oil pump output oil pressure power, and this oil pressure is through automatic transmission computer controlled hydraulic system; Can control first break 18; The braking of second break, 17, the three breaks 14 with separate, and control oil hydraulic motor 2 is realized stepless change.
Shown in Figure of description, described oil hydraulic motor 2 is can hydraulic energy be converted into the mechanokinetic device.The oil hydraulic motor 2 that the present invention adopts is axial-piston hydraulic motors; The profile of axial-piston hydraulic motor is a cylindrical body; Be fit to axially install, also be fit to axial unitary rotation and transmission, the power of axial-piston hydraulic motor and moment of torsion are all bigger; Through the hydraulic system of automatic transmission computer control, thus hydraulic control system and can control oil pressure and flow makes oil hydraulic motor 2 realization stepless change.
Shown in Figure of description; Use the 1 grade of transmission process that advances of the automobile variable speed power transmission mechanism of oil hydraulic motor to be: when driver's rear engine that starts up the car just begins to clockwise rotate, when touch on the brake pedal and gear toggled it to when advancing the D gear of driver's right crus of diaphragm; The hydraulic system of automatic transmission computer control is just controlled second break 17 and has been braked the 3rd ring gear 15, when driver's right crus of diaphragm loosens braking pedal, and during accelerator pedal, be located at torque-converters 24 on the engine flywheel with transmission of power to input shaft 1; Input shaft 1 is delivered to oil hydraulic motor 2, second sun gear 7 and the 3rd sun gear 8 simultaneously with power and clockwise rotates simultaneously.The 3rd sun gear 8 clockwise rotates; Transmission of power is arrived long planet wheel 9; Long planet wheel 9 rotates counterclockwise; With transmission of power to the three ring gears 15; Because the 3rd ring gear 15 is by 17 brakings of second break, so long planet wheel 9 will rotate counterclockwise in the 3rd ring gear 15; And transmission of power is arrived the third line star frame 11; The third line star frame 11 just can clockwise rotate; Transmission of power is arrived output shaft 10.Learn by above-mentioned transmission process, use 1 grade the machine power drive path of advancing of the automobile variable speed power transmission mechanism of oil hydraulic motor to set up.
When the above-mentioned 1 grade of mechanical transmission route that advances was set up, second break 17 had been braked the 3rd ring gear 15; Second planet carrier 5 and first sun gear 4 have also been braked simultaneously; Because second planet carrier 5 is braked, because second sun gear 7 has clockwise rotated; And with transmission of power to second planet wheel 6; Second planet wheel 6 rotates counterclockwise; With transmission of power to second ring gear 16; Second ring gear 16 rotates counterclockwise; Transmission of power is arrived overrunning clutch 19; Because first break 18 is not also braked overrunning clutch 19, overrunning clutch 19 is driven whole simultaneously idle running counterclockwise by second ring gear 16.Learn by above-mentioned transmission process; Use the automobile variable speed power transmission mechanism of oil hydraulic motor, when the 1 grade of mechanical transmission route that advances was set up, the mechanical motion that does not receive second single planetary gear train was interfered.
When the above-mentioned 1 grade of mechanical transmission route that advances was set up, second break 17 had been braked the 3rd ring gear 15; Second planet carrier 5 and first sun gear 4 have also been braked simultaneously; Because first sun gear 4 is braked, because first ring gear 21 has been fixed on the housing 20; Meanwhile first planet carrier 22 of the output shaft coupling of oil hydraulic motor 2 also is braked; The output axle head of oil hydraulic motor 2 just is in braking state, the hydraulic system of automatic gearbox computer control simultaneously; Control oil hydraulic motor 2 inside are in the draining state, just can also clockwise rotate so oil hydraulic motor 2 framies are connecting input shaft 1.Learn by above-mentioned transmission process, use the automobile variable speed power transmission mechanism of oil hydraulic motor, in 1 grade the transmission process of advancing, do not receive the mechanical motion interference of oil hydraulic motor 2 and first single planetary gear train.
Shown in Figure of description, use the 2 grades of transmission process that advance of the automobile variable speed power transmission mechanism of oil hydraulic motor to be: when 1 grade of automatic transmission computer control rises 2 grades, the hydraulic system of automatic transmission computer control; Control second break 17 and stop braking; First break 18 begins braking simultaneously; First break 18 has been braked overrunning clutch 19, and overrunning clutch 19 has been braked the reverse of second ring gear 16 simultaneously, because sun gear 7 has clockwise rotated; And transmission of power is rotated counterclockwise to second planet wheel, 6, the second planet wheels 6; Can not drive the reverse of second ring gear 16; And change into transmission of power to second planet carrier 5; Second planet carrier 5 clockwise rotates; With transmission of power to the three ring gears 15; The 3rd ring gear 15 clockwise rotates; Transmission of power is arrived long planet wheel 9; Long planet wheel 9 clockwise rotates; Transmission of power is arrived the third line star frame 11; The third line star frame 11 clockwise speedups are rotated; Transmission of power is arrived output shaft 10.
Can know that according to above-mentioned transmission process the 3rd sun gear 8 has clockwise rotated in the time of 1 grade; The 3rd ring gear 15 begins to clockwise rotate when rising up into 2 grades, thereby makes the third line star frame 11 speedup outputting power on 1 grade basis, is learnt by above-mentioned drive path; 2 grades the rotating speed of advancing is the rotating speed that the rotating speed of the 3rd sun gear 8 adds the 3rd ring gear 15; Driven in common the third line star frame 11 clockwise rotates; This rotating speed is the stack of two rotating speeds, so use 2 grades the machine power drive path of advancing of the automobile variable speed power transmission mechanism of oil hydraulic motor to set up.
Shown in Figure of description, the transmission process that the automobile variable speed power transmission mechanism of use oil hydraulic motor advances more than 2 grades is: when the 2 grades of machine power drive paths that advance were set up, the hydraulic system of automatic gearbox computer control simultaneously was to oil hydraulic motor 2 beginning fuel feeding; Owing to be designed with oil pressure relief valve in the hydraulic control system; When automobile running resistance was in heavy load, oil pressure relief valve was opened draining, though oil hydraulic motor 2 fuel feeding; But the torque of oil hydraulic motor 2 outputs can not drive first planet carrier 22; When the automobile running resistance load alleviated, oil pressure relief valve was closed draining, the torque of oil hydraulic motor 2 outputs; Just can drive first planet carrier 22 and clockwise rotate, because housing 20 has been fixed first ring gear 21, oil hydraulic motor 2 drives first planet carrier 22 and drives first planet wheel 3 and in first ring gear 21, rotates counterclockwise; First planet wheel 3 rotates counterclockwise; With transmission of power to first sun gear 4; First sun gear, 4 clockwise overspeed rotation; With transmission of power to second planet carrier 5; Second planet carrier, 5 clockwise overspeed rotation; With transmission of power to the three ring gears 15; The 3rd ring gear 15 clockwise overspeed rotation; Transmission of power is arrived long planet wheel 9; Long planet wheel 9 clockwise overspeed rotation; Transmission of power is arrived the third line star frame 11; The third line star frame 11 clockwise rotates; Transmission of power is arrived output shaft 10.
Can know that according to above-mentioned transmission process when automobile running resistance alleviated, what the torque of oil hydraulic motor 2 outputs finally drove was the 3rd ring gear 15, because the variation that the automatic gearbox computer is loaded according to automobile running resistance comes controlled hydraulic system; The oil pressure and the flow of oil hydraulic motor 2 are made in the hydraulic system control again, thereby the rotating speed of oil hydraulic motor 2 outputs can be changed, and the result of this variation has just realized stepless change.
Can know according to above-mentioned transmission process; At the rotating speed more than 2 grades of advancing is the rotating speed that the rotating speed of the 3rd sun gear 8 adds the 3rd ring gear 15; Driven in common the third line star frame 11 clockwise rotates; This rotating speed is the stack of two rotating speeds, is stepless change so use the automobile variable speed power transmission mechanism of oil hydraulic motor at the rotating speed that advances more than 2 grades.Hence one can see that uses the stepless change drive path that advances more than 2 grades of the automobile variable speed power transmission mechanism of oil hydraulic motor to set up.
When the stepless automatic transmission drive path establishment of advancing more than 2 grades, second planet carrier, 5 clockwise overspeed rotation drive second planet wheel 6 simultaneously and clockwise rotate around second sun gear 7; Second planet wheel 6 clockwise rotates; With transmission of power to second ring gear 16; Second ring gear 16 clockwise rotates; Transmission of power is arrived overrunning clutch 19; Because first break 18 keeps braking; Because the reverse that overrunning clutch 19 can only be braked second ring gear 16 can not be braked the clockwise of second ring gear 16, so overrunning clutch 19 is in clockwise unidirectional slipping state; Thereby make second ring gear 16 be in clockwise idle running; Learn that by above-mentioned mechanical transmission course in the machinery and hydraulic combined power transmission process that advance more than 2 grades, the mechanical motion that does not receive second single planetary gear train is interfered.
Shown in Figure of description; Use the transmission process of reversing R shelves of the automobile variable speed power transmission mechanism of oil hydraulic motor to be: when driver's rear engine that starts up the car just begins to clockwise rotate, when touch on the brake pedal and when gear toggled it to reversing R gear of driver's right crus of diaphragm; The hydraulic system of automatic transmission computer control is just controlled the 3rd break 14 and has been braked the 4th ring gear 13, when driver's right crus of diaphragm loosens braking pedal, and during accelerator pedal, be located at torque-converters 24 on the engine flywheel with transmission of power to input shaft 1; Input shaft 1 with transmission of power to oil hydraulic motor 2, second sun gear 7 and the 3rd sun gear 8 and clockwise rotate simultaneously.The 3rd sun gear 8 clockwise rotates; Transmission of power is arrived long planet wheel 9; Long planet wheel 9 rotates counterclockwise; With transmission of power to the three gear rings 15 and short planet wheel 12; Because the 4th ring gear 13 is by 14 brakings of the 3rd break, so short planet wheel 12 will clockwise rotate in the 4th ring gear 13; And transmission of power is arrived the third line star frame 11; The third line star frame 11 rotates counterclockwise; Transmission of power is arrived output shaft 10.Learn that by above-mentioned transmission process the machine power drive path of the reversing R shelves of the automobile variable speed power transmission mechanism of use oil hydraulic motor is set up.
When above-mentioned reversing R shelves mechanical transmission route was set up, the torque-converters 24 that is located on the engine flywheel arrived input shaft 1 with transmission of power; Input shaft 1 clockwise rotates transmission of power to oil hydraulic motor 2, second sun gear 7 and the 3rd sun gear 8, the three sun gears 8; Transmission of power is arrived long planet wheel 9; Long planet wheel 9 rotates counterclockwise; Simultaneously with transmission of power to the three gear rings 15 and short planet wheel 12; The 3rd ring gear 15 rotates counterclockwise; With transmission of power to second planet carrier 5 and first sun gear 4; First sun gear 4 rotates counterclockwise; With transmission of power to first planet wheel 3; Because first ring gear 21 has been fixed on the housing 20; First planet wheel 3 will clockwise rotate in first ring gear 21; With transmission of power to first planet carrier 22; First planet carrier 22 will rotate counterclockwise; With the output shaft of transmission of power to oil hydraulic motor 2, the hydraulic system of automatic gearbox computer control meanwhile; Control oil hydraulic motor 2 inside are in the draining state, just can clockwise rotate so oil hydraulic motor 2 framies are connecting input shaft 1.Learnt by above-mentioned transmission process, use the automobile variable speed power transmission mechanism of oil hydraulic motor, in the transmission process of reversing R shelves, the mechanical motion that does not receive the oil hydraulic motor 2 and first single planetary gear train is interfered.
When above-mentioned reversing R shelves mechanical transmission route was set up, the torque-converters 24 that is located on the engine flywheel arrived input shaft 1 with transmission of power; Input shaft 1 with transmission of power to oil hydraulic motor 2, second sun gear 7 and the 3rd sun gear 8 and clockwise rotate simultaneously.Second sun gear 7 clockwise rotates; With transmission of power to second planet wheel 6; Second planet wheel 6 rotates counterclockwise; With transmission of power to second ring gear 16; Second ring gear 16 rotates counterclockwise; Transmission of power is arrived overrunning clutch 19; Since the first not braking of break 18, the automobile variable speed power transmission mechanism of use oil hydraulic motor, and in the transmission process of reversing R shelves, the mechanical motion that does not receive second single planetary gear train is interfered.
Claims (3)
1. an automobile variable speed power transmission mechanism that uses oil hydraulic motor comprises torque-converters (24), input shaft (1), oil hydraulic motor (2), housing (20), first single planetary gear train, second single planetary gear train, the 3rd twin-stage epicyclic train and automatic transmission computer controlled hydraulic system; It is characterized in that:
Described first single planetary gear train comprises first sun gear (4), first planet wheel (3), first planet carrier (22), first ring gear (21); First sun gear (4) and first planet wheel (3) are meshed; First planet wheel (3) and first ring gear (21) are meshed, and first planet wheel (3) is located on first planet carrier (22);
Described second single planetary gear train comprises second sun gear (7), second planet wheel (6), second planet carrier (5), second ring gear (16); Second sun gear (7) and second planet wheel (6) are meshed; Second planet wheel (6) and second ring gear (16) are meshed, and second planet wheel (6) is located on second planet carrier (5);
Described the 3rd twin-stage epicyclic train comprises the 3rd sun gear (8), long planet wheel (9), the third line star frame (11), the 3rd ring gear (15), short planet wheel (12), the 4th ring gear (13), the 3rd sun gear (8) and long planet wheel (9) is meshed, long planet wheel (9) and the 3rd ring gear (15) are meshed; Long planet wheel (9) also is meshed with short planet wheel (12); Short planet wheel (12) and the 4th ring gear (13) are meshed, and long planet wheel (9) and short planet wheel (12) are located on the third line star frame (11);
Described torque-converters (24) is bound up on the input end of input shaft (1); Be connected with oil hydraulic motor (2), second sun gear (7) and the 3rd sun gear (8) on the output terminal of input shaft (1);
The output shaft of said oil hydraulic motor (2) and first planet carrier (22) connect; First sun gear (4) connects with second planet carrier (5); Second planet carrier (5) connects with the 3rd ring gear (15);
Be linked with output shaft (10) on the output terminal of said the third line star frame (11);
Said first ring gear (21) is fixed on the housing (20);
Said second ring gear (16) is provided with overrunning clutch (19), and overrunning clutch (19) is provided with first break (18); Described the 3rd ring gear (15) is provided with second break (17); Described the 4th ring gear (13) is provided with the 3rd break (14);
Automatic transmission computer controlled hydraulic system is controlled first break (18), second break (17), the braking of the 3rd break (14) with separate, and control oil hydraulic motor (2) is realized stepless change.
2. the automobile variable speed power transmission mechanism of use oil hydraulic motor according to claim 1 is characterized in that: be connected with oil pump (23) on the described torque-converters (24).
3. the automobile variable speed power transmission mechanism of use oil hydraulic motor according to claim 2 is characterized in that: said oil pump (23) is a crescent gear pump.
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| CN2010102339712A CN101886689B (en) | 2010-07-14 | 2010-07-14 | Automobile variable speed power transmission mechanism employing hydraulic motor |
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| CN2010102339712A CN101886689B (en) | 2010-07-14 | 2010-07-14 | Automobile variable speed power transmission mechanism employing hydraulic motor |
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| CN101886689B true CN101886689B (en) | 2012-01-25 |
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| CN102069703B (en) * | 2011-01-01 | 2013-10-23 | 广州市花都全球自动变速箱有限公司 | Electromechanical hybrid power mobile automatic transmission drive system |
| CN107420499A (en) * | 2017-07-25 | 2017-12-01 | 罗灿 | Become linear speed planet row gearing |
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| CN101886689A (en) | 2010-11-17 |
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