| 摘要 |
To provide a transmission capable of using pump/motors or generator/motors of smaller maximum torque and of small size. The transmission includes input shaft ( 4 ), output shaft ( 16 ), a mechanical transmission part interposed between input shaft ( 4 ) and output shaft ( 16 ) including planetary gear mechanisms ( 5 ), ( 6 ), and a hydrostatic transmission part interposed between input shaft ( 4 ) and output shaft ( 16 ) including three pump/motors ( 21 ), ( 25 ), ( 31 ). A rotating shaft of first pump/motor ( 21 ) and a rotating shaft of second pump/motor ( 25 ) are coupled to the mechanical transmission part. Clutches ( 34 ), ( 35 ), ( 36 ) are provided for coupling a rotating shaft of third pump/motor ( 31 ) to at least one of the rotating shaft of first pump/motor ( 21 ) and the rotating shaft of second pump/motor ( 25 ).
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