| 摘要 |
PROBLEM TO BE SOLVED: To provide a lift arm device of a working vehicle, which enables a leading end of a lift arm to be moved on a free locus. SOLUTION: A skid-steering loader 1 as the working vehicle is equipped with the lift arm 11 whose leading end is fitted with a bucket 7, a first cylinder 21, and a second cylinder 22. The side of one end of each of the cylinders 21 and 22 is connected to the lift arm 11, and the side of the other end is connected to a vehicle-side frame 2. A valve for controlling the supply of a pressure fluid to the two cylinders 21 and 22 is controlled depending on the operation of a control lever. Consequently, the free movement locus of the leading end of the lift arm 11 can be drawn as illustrated by a heavy line in the selected figure. COPYRIGHT: (C)2007,JPO&INPIT
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