| 摘要 |
An arrangement in wood chippers of the kind which includes a rotatable body, such as a disc, on which knives (12) are secured with the aid of knive holders (10). Mounted adjacent the knives and the knive holders are wear plates (24) which form a log guide surface which functions to guide the ends of a log to be chipped in a given relationship with the knive engaging the end of the log. When seen in the rotational direction of the chipper disc, the rear ends of the wear plates (24) are fastened to the chipper disc with the aid of means which enable the torsion of the wear plates to be changed. This torsion adjustment means includes camming devices (26) which abut the undersurface of the wear plate and which can be displaced in the radial direction of the disc. The rear ends of the wear plates are secured to the disc by means of fastener devices (50) which can be relieved of load in a manner such as to enable the camming devices (26) to be displaced relative to the wear plate (24) when no load acts thereon. On the other hand, the wear plates and camming devices are locked in their set positions when the fastening devices (50) are in a loaded state. |
