Patent ID: 7600545
Filing Date: 2009-10-13
Classification: B27L

Abstract:
1. An apparatus for receiving and feeding into a chipper wood to be chipped, said apparatus comprising, in the flow direction of the wood: a feed conveyor for receiving and transporting log bundles to a through-flow tumbling drum, a through-flow tumbling drum for receiving the log bundles from the feed conveyor, rotating to break the bundles into separate logs, and providing the resulting separate logs to a receiving conveyor, a revolution-controllable drum drive associated with the through-flow drum, a drum drive load indicator, a log bundle position indicator, a receiving conveyor for receiving separate logs from the through-flow tumbling drum, and a controller for controlling a duration time spent by the log bundles between the feed conveyor and the through-flow tumbling drum by controlling the speed of the feed conveyor, or the speed of rotation of the tumbling drum, or both, comprising a log bundle position input connected to the log bundle position indicator, which provides the controller with position information of a log bundle, or a discharged wood amount input connected to the drum drive load indicator which provides the controller with information about the amount of wood discharged from the tumbling drum, or both; wherein the controller operates the feed conveyor at a speed that is controlled based on position information of a log bundle that is received by the controller, or wherein the tumbling drum is rotated at a speed that is adjusted based on information about the amount of wood discharged from the tumbling drum that is received by the controller, or both, in order to control the duration of time of transition between the feed conveyor and the through-flow tumbling drum.