WORKING EQUIPMENT FOR EXCAVATOR Russian patent published in 1995 - IPC

FIELD: mining, excavating equipment. SUBSTANCE: working equipment of the excavator includes welded bucket comprising two lateral walls and bottom. Opposite sides of the bottom are equipped with working cutting edges. The bucket is hung from rotary back wall by the middle its part in such a manner that each its half overlaps bucket cross section, and may be rested on butts of bucket walls. Back wall of the bucket is hinged to the boom in such a manner that lengthwise axes of hanger hinges fixed to back wall of the bucket, and hanger to the handle of the back wall are displaced relative to one another. Bucket turning about the handle is carried out at the expense of effect of hydraulic cylinder on rear side of back rotary wall of the bucket. Reciprocal turning of the bucket and its back wall is carried out by mechanism placed on rear side of the back wall. This mechanism and the place where the effort is applied from hydraulic cylinder to turn the bucket are located on opposite sides of hanger hinge and the handle of the rear wall of the bucket. EFFECT: simplified design and excavator control, as well as increased reliability, improved safety, increased bucket capacity. 4 cl, 9 dwg