Stepless closed planetary hydromechanical variable-speed drive

FIELD: mechanical engineering.

SUBSTANCE: proposed hydromechanical variable-speed drive has drive and driven shafts, torque converter and two planetary trains. First planetary train has epicyclical gear connected with driven shaft, sun gear, central gear connected with torque converter impeller, and carrier with two-rim planet pinions connected with driven shaft. Reactor of torque converter is connected with driven shaft. Second planetary train has epicyclical gear, sun gear and carrier with planet pinions. Epicyclical gear of first planetary train is in meshing with small rims of two-rim planet pinions. Turbine of torque converter is connected with carrier of second planetary train, and its epicyclical gear is connected with driven shaft.

EFFECT: simplified design, increased service life of engine, reduced consumption of fuel.

1 dwg

 

The invention relates to mechanical engineering and can be used on cars instead of the transmission.

Known hydromechanical transmission (1) having a planetary range, epicycle gear which is rigidly connected with the pump wheel of the torque Converter, and the sun gear with the turbine wheel, drove the planetary series connected with the driven shaft.

The disadvantage of this hydromechanical transmission, in which only part of the engine power is transmitted to the driven shaft, bypassing the hydraulic transmission and hydraulic element in the whole working area operates as a brake, is the low efficiency.

The closest technical solution to the claimed invention is a continuously variable closed planetary hydromechanical variable (2)containing the driving and driven shafts, a torque Converter and two planetary series, drove the first planetary series, with dvuhventsovye sattelite, rigidly connected with the drive shaft, large crowns which are in toothed engagement with epicycle gear rigidly connected with the driven shaft, and small crowns are in toothed engagement with the Central gear hollow shaft rigidly connected with the pump wheel of the torque Converter. The sun gear of the first planetary series is in toothed engagement with large crowns dvuhventsovye satellites and h is cut intermediate shaft connected to the sun gear of the second planetary series carrier which is rigidly connected with the driven shaft, the pair of satellites was taken are in toothed engagement with epicycle gear rigidly connected, through the hollow shaft, the turbine wheel of the torque Converter and a gear engaged with the sun gear. The reactor Converter is rigidly connected with the driven shaft.

A disadvantage of the known hydromechanical transmission is that the gear ratio gear epicycle gear of the first planetary series with large crowns dvuhventsovye satellites does not provide a high angular velocity of rotation of the Central gear and the pump wheel of the torque Converter, as well as its required power, which limits the expansion of the range of increase of torque on the driven shaft. The use of the device of the planetary series with a pair of satellites associated with its sophisticated design and low mechanical efficiency.

The aim of the invention is to expand the range of increase of torque on the driven shaft of the device and replacement of the second planetary series with a pair of satellites to more effective simple planetary series with single satellites that are in toothed engagement with the epicycle and sun gears.

This is achieved by continuously variable closed planetary hydro-mechanical variator with the contains driving and driven shafts, torque Converter and two planetary series. Carrier of the first planetary series, with dvuhventsovye satellites are rigidly connected with the drive shaft, small crowns which are in toothed engagement with epicycle gear rigidly connected with the driven shaft and in toothed engagement with the Central gear rigidly connected to the hollow shaft with the pump wheel of the torque Converter that allows you to change the gear ratio of the gears of the first planetary series, to increase the angular velocity of rotation of the Central gear and the pump wheel, as well as to increase the capacity of the torque Converter. The sun gear of the first planetary series is in toothed engagement with large crowns dvuhventsovye satellites and through the intermediate shaft is connected with a sun gear of the second planetary series. The turbine wheel of the torque Converter hollow shaft connected with the planet carrier of the second planetary series satellites which are in toothed engagement with its epicycle gear rigidly connected with the driven shaft and in toothed engagement with a sun gear. The reactor Converter is rigidly connected with the driven shaft of the device.

The drawing shows a kinematic diagram of the device.

Stepless closed planetary hydromechanical variable contains a leading 1 and the slave 2 is Aly, the torque Converter 3 and two planetary series 4, 5. Drove 6 of the first planetary series 4, with dvuhventsovye satellites 7 are rigidly connected with the drive shaft 1, small crowns which are in toothed engagement with epicycle gear 8 is rigidly connected with the driven shaft 2, and in toothed engagement with the Central gear 9, is rigidly connected to the hollow shaft 10 with the pump wheel 11 of the torque Converter 3. The sun gear 12 of the first planetary number 4 is in toothed engagement with large crowns dvuhventsovye satellites 7 and through the intermediate shaft 13 is connected with a sun gear 14 of the second planetary number 5. The turbine wheel 15 of the torque Converter 3 is connected to the hollow shaft 16 with the planet carrier 17 of the second planetary series 5, 18 satellites which are in toothed engagement with epicycle gear 19 rigidly connected to the driven shaft 2 and the sun gear 14. The reactor 20 of the torque Converter 3 is rigidly connected with the driven shaft 2 of the device and has a positive sign actions.

Work

Stepless closed planetary hydromechanical variable is out four-flow hydromechanical transmission that works in conjunction with a single-stage torque Converter 3, built sequentially in a mud branch, providing a self-tuning necessary mode of working is s devices in a wide range of smooth variation of torque on the driven shaft depending on the profile of the road and forces of resistance to movement of the vehicle with high efficiency. The angular velocity of rotation of the driven shaft may vary from zero to direct transmission. The engine from the drive shaft 1 is transmitted to the carrier 6 of the first planetary series 4 and through small crowns dvuhventsovye satellites 7 one power flow diverts to epicycle gear 8 and the driven shaft 2, the other the flow of power from the Central gear 9 fits through the hollow shaft 10 to the pump wheel 11 of the torque Converter 3, from which the power flow is divided into two streams, one stream power from the reactor 19, with a positive sign actions, branches off on the driven shaft 2, the other on the turbine wheel 15 of the torque Converter 3, which transformed the power flow fits through the hollow shaft 16 to the cage 17 of the second planetary series 5 and its satellites 18 this power flow is divided into two streams, one stream power is branched off on the epicycle gear 19 and the driven shaft 2, the other mud fourth circulating flow of power from the sun gear 14 through the intermediate shaft 13 is coming to the sun gear 12 of the first planetary number 4, which is in toothed engagement with large crowns dvuhventsovye satellites 7 led 6, where due to the difference shoulders crowns dvuhventsovye satellites 7 on the Central gear 9 increases torque, which is transmitted through the hollow shaft 10 on Nason the m wheel 11 of the torque Converter 3, which increases its power. In the torque Converter 3 torque is increased to the desired values in the range of its transformation depending on the load on the driven shaft 2. As a result on the driven shaft 2 devices are added three power flow, two of which are from two epicycle gears 8 and 19, and the third from the reactor 20 of the torque Converter 3. For direct transmission, the torque Converter operates in the mode of the fluid coupling and the entire device rotates as a unit. When working prevails portable movement of all shafts and wheels, which increases the efficiency of the device. Stepless closed planetary hydromechanical variable is compact, simple in design, without special control devices, the use of which cars will increase the service life of the engine, reducing fuel consumption, increasing the average speed of the vehicle and to create favorable conditions while driving.

Sources of information

1. Prokofiev NR. Fundamentals of theory of hydro-mechanical transmissions - M: mechanical engineering, 1968 s Fig.

2. Patent No. 2106555, application No. 96117622.

Stepless closed planetary hydromechanical variable that contains the driving and driven shafts, a torque Converter and two planetary series, the first of which includes a connected driven shaft with epicycle gear, solecollector and connected with the pump wheel of the torque Converter of the Central gear and connected to the drive shaft drove with dvuhventsovye satellites, the reactor of the torque Converter is connected with the driven shaft, the second planetary range includes epicycle, a sun gear and drove with satellites, characterized in that the epicycle gear of the first planetary series is in toothed engagement with small crowns dvuhventsovye satellites, the turbine wheel of the torque Converter is connected with the planet carrier of the second planetary series, and its epicycle gear connected with the driven shaft.



 

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FIELD: transport engineering; automatic transmissions.

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FIELD: mechanical engineering.

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FIELD: mechanical engineering.

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1 dwg

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FIELD: mechanical engineering.

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1 dwg

FIELD: transport engineering.

SUBSTANCE: invention can be used in automatic transmissions controlled by electronic unit and hydraulic devices. Proposed hydromechanical transmission contains hydrodynamic torque converter 2 and planetary reduction gear consisting of four planetary trains. Output link of torque converter is coupled with sun gear 8 of second planetary train, is connected through friction clutch 18 with carrier 12 of third planetary train and through friction clutch 17, with gear 11 of this train which is connected with case 1 through friction brake 22. Sun gear 5 of first planetary train is connected with case 1 through friction brake 19. Ring gear 10 of second planetary train is coupled with carrier 6 of first planetary train and through friction brake 20, with case 1. Ring gear 7 of first planetary train is coupled with carrier 9 of second planetary train and with rings gears 13 and 16 of third and fourth planetary gear trains. Sun gear 14 of fourth planetary train is coupled with carrier 12 of third planetary train and, through friction brake 21, with case 1. Carrier 15 of fourth planetary gear train is output link of transmission.

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1 dwg

FIELD: transport engineering.

SUBSTANCE: invention can be used in automatic transmission controlled by electronic unit and hydraulic devices. Proposed transmission contains hydrodynamic torque converter 2 and planetary reduction gear consisting of four planetary trains. All planetary trains have negative inner ratio. Output link of torque converter is coupled with sun gear 8 of second planetary train, is connected through friction clutch 18 with carrier 6 of first planetary train, and through friction clutch 17, with sun gear 5 of said train which is connected with case 1 through friction brake 19. Carrier 6 is connected with ring gear 13 of third planetary train and, through friction brake 20, with case 1. Ring gear 7 of first planetary train is coupled with carrier 9 of second planetary train and with sun gear 11 of third planetary train. Ring gear 10 of second planetary train is coupled with sun gear 14 of fourth planetary train which is coupled through friction brake 22 with case 1. Carrier 15 of fourth planetary train is coupled, through friction brake 21, with case 1. Ring gear 16 of fourth planetary train is coupled with carrier 12 of third planetary train being output link of transmission.

EFFECT: enlarged mechanical capabilities of transmission owing to provision of ten forward speeds and one reverse speed at preservation of overall dimensions.

1 dwg

FIELD: transport engineering.

SUBSTANCE: invention can be used in automatic transmissions controlled by electronic unit and hydraulic devices. Proposed hydromechanical transmission contains hydrodynamic torque converter 2 and planetary reduction gear consisting of four planetary trains. All planetary trains have negative inner gear ratio output link of torque converter is coupled with sun gear 8 of second planetary trains and is connected through friction clutch 17 with carrier 6 of first planetary train. Carrier 6 is coupled with sun gear 14 of fourth planetary train and, through friction brake 21, with case 1. Sun gear 5 of first planetary train is coupled with case 1 through friction brake 20. Ring gear 10 of second planetary train is connected through friction brake 19 with case 1 and through friction clutch 18, with carrier 12 of third planetary train. Carrier of 9 of second planetary train is coupled with sun gear 11 of third planetary train. Ring gear 13 of third planetary train is coupled with carrier 15 of fourth planetary train which is coupled with case through friction brake 22. Ring gear 7 of first planetary train is connected with ring gear 16 of fourth planetary train and with carrier 12 of third planetary train which is coupled link of transmission.

EFFECT: enlarged mechanical capabilities of transmission owing to provision of nine forward speeds and one reverse speed at preservation of overall dimensions.

1 dwg

FIELD: mechanical engineering.

SUBSTANCE: hydromechanical gear box comprises hydrodynamic converter of torque (2) and planet reduction gear. Carrier (6) of the first planet row is connected with crankcase of the gear box (1) through friction brake (17). Corona pinion (7) of the first planet row is connected to carrier (12) of the third planet row that is output link (4) of the gear box. Output member (3) of the hydrodynamic converter of torque is connected with solar pinion (8) of the second planet row and with solar pinion (5) of the first planet row through friction controlled clutch (15). Solar pinion (11) of the third planet row is connected with the crankcase of the gear box through friction brake (18). Solar pinion (5) of the first planet row is connected with crankcase of the gear box through friction brake (16). Corona pinion (10) of the second planet row is connected with corona pinion (13) of the third planet row. Carrier (6) of the first planet row is connected with carrier (9) of the second planet row. Corona pinion (10) of the second planet row is connected with carrier (6) of the first planet row through friction controlled clutch (14).

EFFECT: expanded functional capabilities and prolonged service life.

8 cl, 11 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to planetary transmission used in vehicle automatic transmission systems. Proposed hydromechanical tansmission with six forward speeds and one reverse speed has case 1, torque converter 2, input member 3, output member 4 and planetary reduction gear, two friction clutches and three friction brakes. Planetary reduction gear consists of three planetary gear trains. First planetary gear train consists of sun gear 5, planet pinion carrier 6 and crown gear 7 (epicycle). Second planetary gear train consists of sun gear 8, planet pinion carrier 9 and crown gear 10 (epicycle). Third planetary gear train consists of sun gear 11, planet pinion carrier 12 and crown gear 13 (epicycle). Crown gear 10 of second planetary gear train is connected by friction clutch 14 with carrier 9 of second planetary gear train. Input member 3 is connected by friction clutch 15 with sun gear 5 of first planetary gear train. Sun gear 8 of second planetary gear train is coupled with input member 3. Sun gear 5 of first planetary gear train is connected with case 1 by friction brake 16. Friction brake 17 connects intercoupled carrier 6 of first planetary gear train and crown gear 10 of second planetary gear train with case 1. Friction brake 18 connected sun gear 11 of third planetary gear train with case 1.

EFFECT: enlarged kinematic capabilities, increased service life of transmission.

18 cl, 20 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to planetary transmission used in vehicle automatic transmission systems. Proposed hydromechanical tansmission with seven forward speeds and one reverse speed has case 1, torque converter 2, input member 3, output member 4 and planetary reduction gear, three friction clutch and three friction brakes. Planetary reduction fear consists of three planetary gear trains. First planetary gear train consists of sun gear 5, planet pinion carrier 6 and gear 7. Second planetary gear train consists of sun gear 8, planet pinion carrier 9 and crown gear 10. Third planetary gear train consists of sun gear 11, planet pinion carrier 12 and crown gear 13. Input member 3 is connected by friction clutch 14 with intercoupled sun gear 8 and sun gear 11 and it is coupled also by friction clutch 15 with intercoupled carrier 9 and carrier 12. Carrier 9 coupled with carrier 12 is connected by friction clutch 16 with sun gear 11 coupled with sun gear 8. Sun gear is coupled with input member 3. Carrier 6 is connected with case 1 by friction brake 18 connects intercoupled carrier 9 and carrier 12 with case 1. Friction brake 19 connects intercoupled sun gear 8 and sun gear 11 with case 1.

EFFECT: enlarged kinematic capabilities, reduced consumption of fuel, increased service life of transmission, enlarged number of types of vehicles which can operate with transmission of proposed kinematic diagram.

4 cl, 6 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to planetary transmission used in vehicle automatic transmission systems. Proposed hydromechanical transmission with six forward speeds and two reverse speeds has case 1, torque converter 2, input member 3, output member 4 and planetary reduction gear, two friction clutches and four friction brakes. Planetary reduction gear consists of three planetary gear trains. First planetary gear train consists of sun gear 5, planet pinion carrier 6 and crown gear 7. Second planetary gear train consists of sun gear 8, planet pinion carrier 9 and crown gear 10. Third planetary gear train consists of sun gear 11, planet pinion carrier 12 and crown gear 13. Carrier of second planetary gear train is connected by friction clutch 14 with input member 3. Input member 3 is connected by friction clutch 15 with sun gear 5 of first planetary gear train. Crown gear 7 of first planetary gear train is coupled with input member 3. Sun gear 5 of first planetary gear train is connected with case 1 by friction brake 16. Friction brake 17 connects intercoupled carrier 6 of first planetary gear train crown gear 13 of third planetary gear train and sun gear 8 of second planetary gear train with case 1. Friction brake 18 connects sun gear 11 of third planetary gear train with case 1. Friction brake 19 connects intercoupled carrier 9 of second planetary gear train and carrier 12 of third planetary gear train with case 1.

EFFECT: enlarged kinematic capabilities, increased service life of transmission.

5 cl, 7 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to planetary transmission used in vehicle automatic transmission systems. Proposed transmission with six forward speeds and one reverse speed has case 1, torque converter 2, input member 3, output member 4, planetary reduction gear, two friction clutches and three friction brakes. Planetary reduction gear consists of three planetary gear trains. First planetary gear train consists of sun gear 5, carrier 6 and crown gear 7. Second planetary gear train consists of sun gear 8, carrier 9 and crown 10. Third planetary gear train consists of sun gear 11, carrier 12 and crown gear 13. Input member 3 is connected by friction clutch 14 with carrier 6 of first planetary gear train and by friction clutch 15, with sun gear 5 of first planetary gear train. Sun gear 8 of second planetary gear train is coupled with input member 3. Sun gear 5 of first planetary gear train is connected with case 1 by friction brake 16. Friction brake 17 connects intercoupled carrier 6 of first planetary gear train and carrier 12 of third planetary gear train with case 1. Friction brake 18 connects sun gear 11 of third planetary gear train with case 1.

EFFECT: enlarged kinematic capabilities, increase life of transmission.

24 cl, 28 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to planetary transmission used in vehicle automatic transmission systems. Proposed transmission with six forward speeds and one reverse speed has case 1, torque converter 2, input member 3, output member 4 and planetary reduction gear, two friction clutches and three friction brakes. Planetary reduction gear consists of three planetary gear trains. First planetary gear train consists of sun gear 5, planet pinion carrier 6 and crown gear 7. Second planetary gear train consists of sun gear 8, planet pinion carrier 9 and crown gear 10. Third planetary gear train consists of sun gear 11, planet pinion carrier 12 and crown gear 13. Input member 3 is connected by friction clutch 14 with carrier 6 of first planetary gear train, and by friction clutch 15, with sun gear 5 of first planetary gear train. Sun gear 8 of second planetary gear train is coupled with input member 3. Sun gear 5 of first planetary gear train is connected with case 1 by friction brake 16. Friction brake 17 connects intercoupled carrier 6 of first planetary gear train and sun gear 11 of third planetary gear train with case 1. Friction brake 18 connects carrier 12 of third planetary gear train with case 1.

EFFECT: enlarged kinematic capabilities increased service life of transmission.

24 cl, 26 dwg

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