| 摘要 |
PURPOSE:To make it possible to perform skid-steering, by incorporating a skid-steering mechanism composed of three bevel gear and a clutch mechanism, to a final reduction shaft in a mission casing. CONSTITUTION:A skid steering mechanism is composed of left and right bevel gears 3L, 3R and counter bevel gear 2 coupling both left and right bevel gears 3L, 3R with each other. A left bevel gear 3L is adjacent to the inside of a gear 1L and is fitted on a final reduction shaft 6L while the right bevel gear 3R is loosely fitted on the final reduction gear 6L adjacent to the inside of a gear 1R. Both left and right bevel gears are meshed with a steering clutch gear 11R so that they form a skid hydraulic clutch 5 between the gear 1L and the gear 1R spline-engaged with a final reduction gear. This skid hydraulic clutch 5 is turned on and off by means of a skid pin 4.
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