PURPOSE: To avoid double digging in the side wall or the corner of a hold by moving a bucket elevator to the corner of the hold from the remotest position from the side wall of the hold and at the same time by making the tip side of a dig-out part go ahead of the bucket elevator to tilt and move the dig-out part to the side wall of the hold at the same time.
CONSTITUTION: The rotating angle of a dig-out part 15 is controlled so that the dig-out part 15 extends perpendicularly to the side wall of a hold 10-1 at the intermediate position between two adjacent corners of the hold 10-1, namely, the remotest position from the corner of the hold 10-1. At that time, the center of the bucket elevator 14 is located in the remotest position A, or C, G from the side wall of the hold 10-1 or the opening edge of a hatch 10-2. Further, the dig-out part 15 is controlled so that the angle of the dig-out part 15 and the rotating angle of a boom, namely, the rotating angle of a rotating frame and the travel position are moved keeping a fixed interval between the tip end part thereof and the side wall of the hold 10-1 at the time of movement along the hold 10-1.
ITO YOSHIKAZU
HOSOMI KAZUO
ISHIKAWA TOMOKI
ISHIKAWA HIROAKI
KANEDA TSUNEHIRO
OGAMI MASAMICHI
IDA TAKASHI
FUJITA MASAO
HAYASHIOKA TAKUMI
ODAGAMI TOORU
KAWASAKI STEEL CO
KAWATETSU BUTSURYU KK
Next Patent: AUTOMATIC DOCUMENT FEEDING DEVICE AND IMAGE FORMING DEVICE