| 摘要 |
The invention describes digging equipment (1) of the type comprising a self-propelled base machine (2) provided with at least one arm (6) that supports at least one digging tool (3). The digging tool (3) is in turn provided with at least one device (10, 11) for crumbling soil. The digging tool (3) is operatively connected to the base machine (2) through a suspending flexible element (7) that can be wound or unwound by means of a winch (8) arranged on such a base machine (2). The base machine (2) also comprises a main power engine (17), capable of supplying the mechanical power required to actuate all the hydraulic apparatuses of the digging equipment (1), and a hydraulic system consisting of two independent and separate hydraulic circuits (S; U). A first hydraulic circuit (S) is configured to control and supply the main service apparatuses of the base machine (2), including at least a movement apparatus for moving the digging tool (3). A second hydraulic circuit (U), on the other hand, is configured to control and supply the main digging apparatuses of the digging tool (3), including at least the actuators of the device (10, 11) for crumbling soil. |
