| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary blade for bush clearing, which inserts rotary blade tips into miscellaneous small trees at a right angle to obtain good sharpness easily and suppresses flying-away upward of pebbles or the like, while preventing separation of a cutting edge flat part from a mounting flat part, and exhibits excellent safety. SOLUTION: A base metal includes: a mounting flat part formed with a mounting hole at the center thereof to a bush clearing machine; an annual bulged part formed outside the mounting flat part, projecting on the rear face side of the base metal, opposite to the bush clearing machine; and a cutting edge flat part extended, outside the bulged part, substantially on the same face as the mounting flat part toward the outer circumferential edge direction of the base metal. A plurality of recessed connection holding parts, for example, which can hold connection of the cutting edge flat part to the mounting flat part even if the bulged part is worn out, are provided at a prescribed position in the circumference direction of the bulged part. COPYRIGHT: (C)2012,JPO&INPIT |
