PROBLEM TO BE SOLVED: To provide a ditcher which can dig a ditch in which a slope frame is embedded and installed efficiently and at low construction cost. ;SOLUTION: A ditcher for slope frame installation is provided with a guide rail 1 which is provided at the predetermined height on the ground 15 and substantially in parallel on the ground and a base 17 which has a wheel 2 in contact with a lower side of the guide rail 1 and is provided on the ground 15. It consists of a swing base 18 which is supported and stored in the base 17 in such a manner that it can swing downward, a rotation drive source 3 which is provided on the swing base 18 and has a decelerator which decelerates rotation, a rotary digging blade 4 which is provided on the swing base 18, protrudes downward from the base 17 due to the transmission of rotation torque from the decelerator and downward swinging of the swing base 18, and is rotated to dig the ground 15, and a winch which is put and fixed on the ground 15 and pulls the base 17 through a rope on the ground 15.;COPYRIGHT: (C)1998,JPO
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