| 摘要 |
PROBLEM TO BE SOLVED: To provide an operation support device of a grab bucket type unloader capable of performing winding-down operation of a grab bucket smoothly while avoiding collision with a deck, and improving unloading efficiency.SOLUTION: During winding-down operation of a grab bucket 8, if a current position of the grab bucket 8 detected by a bucket current position detector 26 is positioned above a deck position, which is detected by a deck position detector 25, other than an upper opening, and a vertical interval between the current position of the grab bucket 8 and the deck position is equal to or less than a set interval, a winding-down stop signal 28a is output from a control device 30 to an inverter 28 of a motor 27 of a winch drum.SELECTED DRAWING: Figure 3 |
