| 摘要 |
PROBLEM TO BE SOLVED: To provide a traveling vehicle driving device with a speed change mechanism thereof separated from a reduction gear. SOLUTION: In the traveling vehicle driving device to transmit the power from an engine to a crawler type traveling device via an HST transmission and a reduction gear, the power from the engine is transmitted for speed change to an HST pump Pa of the HST transmission fixed to a rear part of the engine E, and the hydraulic pressure of the HST pump Pa is transmitted to a HST motor M added to the reduction gear G via working fluid pipes 78, 79. In addition, the power of the HST motor M is transmitted to the reduction gear G. Right and left side clutch gears 65L, 65R, side brakes 66L, 66R, a pivotal brake turning clutch 71 which is a reversing mechanism for pivotal brake turn and a reduction gear train are provided on the reduction gear G, the power is output from the reduction gear G through right and left output shafts 68L, 68R, and final reduction gears FG, FG are added to right and left ends of the output shafts 68L, 68R. The power is transmitted from the final reduction gears FG, FG to driving sprockets 24, 24 of right and left crawlers 29, 29. COPYRIGHT: (C)2006,JPO&NCIPI
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