WORKING ATTACHMENT OF A HYDRAULIC EXCAVATOR

摘要

A working attachment of a hydraulic excavator has an arm with a hinged bucket with cutting blade, a lever and con-rod for control of the bucket, a hydro-controlled ripper tip that is hinged to the bucket. The front facet of the ripper tip is arranged as equidistant with respect to the outer surface of the bottom of the bucket and the back facet of cutting blade and is in contact with those, at that the cutter edge of the ripper tip goes out of the boundaries of the cutting edges of the bucket in radial direction.