| 摘要 |
The present invention pertains to a plowing implement provided with rotary tools of the kind comprising a horizontal powered rotor (2) provided with a series of sets (7) of radial tools (9). Each of said tools (9) consists of a substantially irregular, arcuated and pointed wedge-shaped body, having such form that, at its front portion, it exhibits a first face (ABD) remarkably inclined to a vertical plane ( pi ) and in the form of a moldboard defined forwards by a first cutting edge (AD). At its rear portion, tool (9) exhibits a second cutting edge (BC), slanting with respect to the first one and substantially transverse thereto, which defines a second face (BCD) inclined to the first and contiguous to it. During the working step, when the tip speed of the tool that rotates concordantly with the equipment advancing direction on the ground, is greater than the advancing direction itself, the first cutting edge (AD) of the tool and the first face (ABD) thereof are operative, so that plowing is carried out by the latter. When the opposite occurs, these conditions being however abnormal and transitory, it is the second cutting edge (BC) and the second face (BCD) that are operative, which allows the equipment advancing and at the same time a sufficient plowing of the ground.
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