| 摘要 |
<p>The present invention is directed toward a transmission comprising:
- a transmission case;
- a first planetary gear mechanism arranged in the transmission case and comprising a sun gear, a planet gear set, and a ring gear;
- a transmission input shaft connected to the first planetary gear mechanism and connectable to an external power source for driving the planetary gear mechanism;
- at least one transmission output shaft connected to the first planetary gear mechanism and connectable to an external device for driving said external device;
- at least one first hydrostat arranged externally on the transmission case and connected to the first planetary gear mechanism via a pump input shaft and configured to act as a unidirectional variable displacement pump driven by the planetary gear mechanism;
- at least one second hydrostat arranged externally on the transmission case, driven by the first hydrostat, and configured to act as a unidirectional motor and connected to the planetary gear mechanism via a motor output shaft for driving the first planetary gear mechanism;
wherein each of said transmission input shaft, said first hydrostat and said second hydrostat is connected to a respective one of said sun gear, said planet gear set, and said ring gear;
wherein said transmission output shaft is connected to the one of said sun gear, said planet gear set, and said ring gear to which the second hydrostat is connected;
wherein the first hydrostat and the second hydrostat are separate devices each having its own case arranged externally on the transmission case, and are connected via a hydraulic circuit that is configured for unidirectional flow of hydraulic oil between the first hydrostat and the second hydrostat.</p> |
