Arrangement for controlling several oil hydraulic motors

摘要

A first oil hydraulic motor (1) is connected to the drive shaft via the clutch (5). A second oil hydraulic motor (2) with variable volume is always connected to the drive shaft (3). A first tilt rotation controller (7,8) controls the tilt rotation of the latter oil hydraulic motor on the basis of the drive-side oil pressure. A zero tilt rotation fixing device (10) operates to hold the first oil hydraulic motor in zero tilt rotation.