| 摘要 |
PURPOSE:To reduce the weight of working machine as well as simplify the mechanism of the machine by using a system in which the angular velocity of the blade is designated by a tilt lever and an angle lever, and a cylinder 4 is controlled in such a way that the blade is controlled to have a given angle by CPU. CONSTITUTION:The tilting angular velocity and angling angular velocity of a blade 10 are designated by a tilt lever 20 and an angle lever 22. On the basis of input data, in CPU 34, the controlled values of two cylinders 15 and 16 are calculated so that the blade 10 comes to have designated tilting and angling angles. The cylinders 15 and 16 each come to have a given length, and the blade 10 is controlled to a given angle. The occurrence of mechanical interference between the blade 10, C-frame 11, and the cylinders 15 and 16 can thus be completely prevented.
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