| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an output controlling method in an agricaltural working car capable of improving zero start or slow speed running performance and simply improving operation efficiency even in high-speed moving operation with a heavy load.SOLUTION: A working car includes a hydraulic pump 28 and a hydraulic motor 29 as a hydraulic transmission mechanism 30 which changes gear and outputs power of an engine 21 and a planetary gear mechanism 41 which synthesizes the power of the engine 21 and gear change output of the hydraulic motor 29. The planetary gear mechanism 41 includes a sun gear 36 which is engaged and pivotally supported onto a motor shaft 35, a planetary gear 38 which is freely rotatably disposed on a carrier gear 37 to which the power is transmitted from the engine 21 via a transmission gear 32 and is engaged with the sun gear 36 and a ring gear 40 which is engaged with the planetary gear 38. When a swash plate tilting angle of the hydraulic pump 28 is controlled to be zero, the sun gear 36 is stopped, rotation output of the transmission gear 32 and the carrier gear 37 is transmitted to the ring gear 40 and a synthesized output of the highest efficiency is taken out of the ring gear 40.</p> |
