Blade device for working machine and working machine mounted with the same

Abstract

The present invention provides 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 theta 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 DEG - 55 DEG , 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).

Description

technical field [0001] The present invention relates to a shovel loaded on various engineering vehicles such as bulldozers or wheeled bulldozers, and in particular to an engineering machinery shovel suitable for excavation, soil transportation, leveling, etc., with good operating efficiency, improved fuel efficiency and economy Knife device and engineering machinery with the device. Background technique [0002] Various construction vehicles such as bulldozers and wheeled bulldozers are often used at various work sites such as construction and civil engineering. This engineering vehicle is loaded with engineering attachments, ie blades. The blade is widely used in bulldozing operations such as excavation, soil transportation, soil filling, soil compaction, and leveling. [0003] In this kind of engineering vehicle, in order to maximize its operating efficiency, the key is to meet the following conditions: that is, to increase the amount of soil transported in each cycle (s...

AI Technical Summary

Problems solved by technology

Therefore, this composition will greatly reduce the mining efficiency

In addition, depending on the design of the central front, connecting front and end fronts, there is a low probability of having a blade that digs less efficiently than a prior art semi-U-shaped blade of the same blade capacity

In addition, especially in the case of rotating and pressing down when moving soil, the soil carried on the blade will slide from the central front to the outer connecting front in a very short period of time during the rotating travel, and will fall from the front of the end. The phenomenon of slipping everything in an instant

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