| 摘要 |
The bushwood chopper of the present invention comprises a frame adapted to be mounted on a crane-type vehicle at the end of a boom. The frame has a structure for supporting a rotatable shaft on which is mounted at least one disc supporting on its periphery, two pivoting cutting blades. The shaft has an abutting ring around its periphery at the level of the cutting blades for preventing the latter from freely rotating 360 degrees. The blades can pivot backwardly upon a sudden resistance to a limit allowing them to hide within the periphery of the disc and to return, as promptly as possible, in their radial operating position. The bushwood chopper, preferably, has a plurality of superposed discs and cutting blades. The lowermost disc is provided with transversal bar in order to chop the stumps remaining below to rotatable cutting blades.
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