| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that labor and time are required for controlling a width of a hopper. SOLUTION: A second hopper structural member 12 is provided slidable along a first hopper structural member 11 in the width direction of the hopper. The lower faces of the first hopper structural member 11 and the second hopper structural member 12 are provided with guide rails 31, 32, respectively, which are fitted to each other for guiding the slide of the second hopper structural member 12. An actuator 35 is provided between the first hopper structural member 11 and the second hopper structural member 12 for moving the second hopper structural member 12 with the guide of the guide rails 31, 32. A stopper 43 is inserted into the guide rails 31, 32 for the first hopper structural member 11 and the second hopper structural member 12 whose relative movement is controlled by the actuator 35.
|
