Device for pre=cutting vines

摘要

The tractor-drawn unit (8) comprises several superposed cutter systems driven by a hydraulic motor (6) and a further unit (17) engaging over the line of vines has discs driven by a hydraulic motor (25). The speed of the hydraulic motors is restricted through a fixedly set oil volume divider (34) which is connected directly after a pump (32) of the hydraulic system of the device. The hydraulic cylinder (28) has an end position damping in the direction of the swivel-out position of the structural unit (17) which engages over the line of vines. The hydraulic motor (6) on the tractor side is biased on one hand by the return oil of the hydraulic motor (25) of the unit (17) engaging over the line of vines and on the other by the residual oil of the oil volume regulator (35).