Patent ID: 7654336
Filing Date: 2010-02-02
Classification: E02F

Abstract:
1. A work machine blade device that is attachable to various types of work machines, the blade device comprising: a blade including said central front portion having a prescribed blade width at a lower end that extends in a left-and-right direction perpendicular to a digging direction, said central front portion including a first edge section at the lower end thereof, each of said interposition front portions including a second edge section at a lower end thereof, each of said side front portions including a third edge section at a lower end thereof, an intersection line formed between each of said interposition front portions and a corresponding one of said side front portions, and an intersection point between edges of each of said second edge sections and a corresponding one of said third edge sections being positioned rearward relative to an edge of said first edge section in top plan view, a front surface of each of said central front portion, said interposition front portions, and said side front portions being formed in an arc-shaped surface that continuously extends from a top end to the lower end of each of said central front portion, said interposition front portions, and said side front portions with the arc-shaped surface having a radius R each of said first, second and third edge sections extends in a tangential direction from the lower end of a corresponding one of said central front portion, said interposition front portions, and said side front portions, said radius R where a value H represents a height from the edge of said first edge section to the top end of said central front portion in side view in a prescribed digging posture in which an edge angle α formed between a horizontal direction and the first edge section is in a range of 40° to 55°.