| 摘要 |
<p>A blade deice for a working machine, having an overall blade width of W, and having a center front-face section (12) that has at its lower end a rectilinear first cutting blade (15) with a predetermined blade width (W1), connection front-face sections (13) each having a second cutting edge (16) that extends rearward continuous from the first cutting blade (15) and bent at a predetermined angle d relative to the first edge (15), and end front-face sections (14) each having a third cutting edge (17) that extends continuous from the second cutting blade (16) and is bent at an angle ? relative to a line extended from the first cutting blade (15). When each cutting blade (15-17) extends in a tangential direction from the lower end of each front-face sections (12-14), a blade edge angle a of each cutting blade (15-17) is in a cutting position in a rage of 40° - 55°, and the height, in a side view, from the edge of the first cutting blade (15) to the upper end of the blade is H, the blade device satisfies the following expression: R2 = (0.7 to 1.0) × H ...(1)</p> |
