Patent ID: 8740311

Claim:
A cutting apparatus for concrete or the like, comprising: a main body; a blade cover; and a slide guide, wherein: the main body includes a body frame, wheels, a motor, and a blade, and is configured so that a cutting depth of the blade during a cutting operation is adjustable by changing a tilting angle of the body frame in a front-rear direction and a height of a front portion of the body frame; the blade cover includes a box-shaped casing having a size such that the blade can be entirely covered, and a slider attached to a rear surface of the casing; the casing is open at a bottom surface side, and has a notch for receiving a rotating shaft of the blade formed in the rear surface of the casing from a lower edge upward to a predetermined height position; the slider has left and right linear portions of a predetermined length and is attached so that both of the linear portions are oriented to be on an inner side and parallel to each other and also so that a predetermined gap is formed between a portion of a predetermined range including at least the linear portions and the rear surface of the casing; the slide guide includes left and right circular-arc portions and flaps for sandwiching the linear portions of the slider; the left and right circular-arc portions are disposed at a side surface of the body frame in a mutual arrangement so as to face one another in a front-rear direction of the body frame, with a rotating shaft that supports the blade being inserted therebetween; each flap is attached so that a predetermined gap is formed between said flap and the side surface of the body frame; and by sandwiching the linear portions of the slider between the flaps of the slide guide and the body frame and sandwiching the circular-arc portions between the left and right linear portions, the blade cover is held in a state in which the blade cover can slide in the up-down direction with respect to the slide guide and the body frame and can rotate about the circular-arc portions.