Multi-stage planetary gearbox with two blocks of two-stage planetary gear

摘要

1. The multi-stage transmission, comprising:;the front part;;output portion;;stationary part;;first and second block of dual planet gear; wherein the first block of the two-stage planetary gear having a first, second, third, fourth and fifth element; wherein the second block of the two-stage planetary gear having a first, second, third and fourth member; wherein the elements of the planetary gear units are sun gears, ring gears, and carrier; wherein the first element of the second block of the two-stage planetary gear is permanently connected for joint rotation to the output part;;a connecting member permanently connecting the first element of the first planetary gear unit for joint rotation with the second element of the second planetary gear unit; and;seven transmit torque mechanism configured to selectively engage to connect with each other the elements of the first and second block of a two-stage planetary gear with an input part, a stationary part or elements of the second block of the two-step planetary gear, with seven transmission torque mechanism arranged to clutch in combinations of three to fifteen to create transmission ratios forward and one gear ratio between the rear part of the input and output part.;2. The multistage transmission according to claim 1, wherein the front portion is selectively connected to the second and third elements of the first block of the two-stage planetary gear by engagement of first and second torque transmitting seven mechanisms respectively.;3. The multistage transmission according to claim 2, wherein the first and second torque-transmitting mechanisms are arranged axially adjacent to each other without elements of planetary gear unit and the other without transmitting torque between them mechanisms.;4. The multistage transmission according to claim 1, wherein the fourth and fifth elements of the first block of the two-step planetary gear is selectively fixedly connected to the fixed part via a third and fourth of the seven clutch torque transmission mechanisms, respectively.;5. The multistage transmission according to claim 4, wherein the third and fourth torque-transmitting mechanisms are arranged axially adjacent to each other without elements of planetary gear unit and the other without transmitting torque between them mechanisms.;6. The multistage transmission according to claim 1, wherein the input portion is selectively coupled for common rotation with the third element of the second planetary gear unit through coupling of the seven fifth torque transmitting mechanisms.;7. The multistage transmission according to claim 1, wherein the second element of the second planetary gear unit is selectively connected for joint rotation to the third element of the second planetary gear unit through a clutch of the sixth of the seven torque transmitting mechanisms.;8. The multistage transmission according to claim 1, wherein the fourth element of the second planetary gear unit is connected rigidly with the fixed portion by engagement of the seventh of the seven torque transmitting mechanisms.;9. The multistage transmission according to claim 1, in which three of the seven torque transmitting mechanisms are belt-type brakes which are adapted to selectively connect the various elements of the respective two-stage planetary gear unit with the fixed portion.;10. Multi-stage gearbox according to claim 1, wherein the first, second, third, fourth and fifth elements of the first block of the two-step planetary gear is the first carrier, the first ring gear, the second ring gear, the first sun gear, the second sun gear wheel, respectively; wherein the first carrier is rotatably supported first and second set of gears which are meshed with each other; wherein the first set of pinions is meshed with the first ring gear and the second sun gear; wherein the second set of pinions is meshed with the second ring gear and the first sun gear;;wherein the first, second, third and fourth elements of the second block of the two-stage planetary gear is the second carrier, a third ring gear, the third sun gear and fourth ring gear, respectively; wherein the second carrier rotatably third and fourth gear set; wherein the third set of pinions is meshed with the third ring gear and the third sun gear; and wherein the fourth set of pinions is meshed with the third gear set and a fourth ring gear.;11. Multi-stage gearbox according to claim 1, wherein the front portion is selectively connected to the second and third elements of the first block of the two-stage planetary gear by engagement of first and second torque transmitting seven mechanisms respectively;;wherein the fourth and fifth elements of the first block of the two-step planetary gear is selectively rigidly with the fixed portion by engaging the third and fourth of the seven torque transmission mechanisms respectively;;wherein the input portion is selectively coupled for common rotation with the third element of the second planetary gear unit through coupling of the seven fifth torque transmitting mechanism;;wherein the second element of the second planetary gear unit is selectively connected for joint rotation to the third element of the second planetary gear unit through a clutch of the sixth of the seven torque transmitting mechanisms; and;wherein the fourth element of the second planetary gear unit is connected rigidly with the fixed portion by engagement of the seventh of the seven torque transmitting mechanisms.;12. Multi-stage gearbox according to claim 11, wherein one of the fifteen forward gear ratios is determined by a second unit two stage planetary gear when linked only the third, fourth and fifth torque transmitting mechanisms.;13. Multi-stage gearbox according to claim 11, wherein one of the fifteen forward gear ratios is created by passing the torque of the first block of the two-stage planetary gear unit in the second two-stage planetary gear when linked seventh torque transmitting mechanism is engaged and one of the third and fourth torque transmitting mechanisms or both of the first and second torque transmitting mechanisms.;14. Multi-stage gearbox according to claim 11, wherein one of the fifteen forward gear ratios is created using only the first block of the two-step planetary gear is engaged when sixth torque transmitting mechanism is engaged and one of the first and second torque transmitting mechanisms and one of the third and fourth torque transmitting mechanisms or both of the first and second torque transmitting mechanisms.;15. Multi-stage gearbox according to claim 11, wherein one of the fifteen forward gear ratios is created using both the two-stage planetary gear unit with transmission speeds summation block in the second two-stage planetary gear is engaged when fifth torque transmitting mechanism is engaged and one of the third and fourth torque transmitting mechanisms or both of the first and second torque transmitting mechanisms.;16. The multistage transmission comprising:;the front part;;output portion;;stationary part;;first and second block of dual planet gear; wherein the first block of the two-stage planetary gear having a first, second, third, fourth and fifth element; wherein the second block of the two-stage planetary gear having a first, second, third and fourth member; wherein the elements of the planetary gear units are sun gears, ring gears, and carrier; wherein the first element of the second block of the two-stage planetary gear is permanently connected for joint rotation to the output part;;a connecting member permanently connecting the first element of the first planetary gear unit for joint rotation with the second element of the second planetary gear unit; and;seven torque transmitting mechanism configured to selectively engage;;wherein the front portion is selectively connected to the second and third elements of the first block of the two-stage planetary gear by engagement of first and second torque transmitting seven mechanisms respectively;;wherein the fourth and fifth elements of the first block of the two-step planetary gear is selectively connected rigidly with the fixed portion by engaging the third and fourth of the seven torque transmission mechanisms respectively;;wherein the input portion is selectively coupled for common rotation with the third element of the second planetary gear unit through coupling of the seven fifth torque transmitting mechanism;;wherein the second element of the second planetary gear unit is selectively connected for joint rotation to the third element of the second planetary gear unit through a clutch of the sixth of the seven torque transmitting mechanisms; and;a fourth element of the second block of the planetary gear is rigidly connected to the stationary part by engagement of the seventh of the seven transmission torque mechanisms, with seven transmission torque mechanism arranged to grip in three combinations for creating fifteen gear ratios forward and one gear ratio adjustable stroke.