| 摘要 |
PROBLEM TO BE SOLVED: To provide a working vehicle designed to improve its operating efficiency by enabling working units 5 and 28 to be driven as desired and also improve its operating accuracy by reducing the abnormal speed changes of the working units 5 and 28 attributable to miscontrol during its traveling. SOLUTION: The working vehicle has the following mechanism. First, a statically hydraulic stepless variable-speed gear (76) that drives the working units (5 and 28) is subjected to variable-speed actuation by the control of a switch (119) furnished on a variable-speed lever (S) for traveling speed change. Secondly, the statically hydraulic stepless variable-speed gear (76) is automatically driven at a predetermined speed over a set time. Thirdly, the statically hydraulic stepless variable-speed gear (76) is subjected to variable-speed actuation only when the variable-speed lever (S) is at a neutral position. COPYRIGHT: (C)2007,JPO&INPIT
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