| 主权项 |
1. Digging equipment of the type comprising a self-propelled base machine provided with at least one arm supporting at least one digging tool, in turn provided with at least one device for crumbling soil, the digging tool being operatively connected to the base machine through a suspending flexible element which can be wound or unwound by means of a winch located on said base machine, said base machine further comprising a main power engine, capable of supplying the mechanical power required to actuate all the hydraulic apparatuses of the digging equipment, and a hydraulic system consisting of two independent and separate hydraulic circuits (S; U), wherein a first hydraulic circuit (S) is configured to control and supply the main service apparatuses of the base machine, including at least a movement apparatus for moving the digging tool, and wherein a second hydraulic circuit (U) is configured to control and supply the main digging apparatuses of the digging tool, including at least the actuators of said at least one device for crumbling soil, wherein each of said two independent and separate hydraulic circuits (S; U) respectively comprises at least one pump assembly, at least one actuator, at least one distributor or control valve for controlling said at least one actuator, at least one heat exchanger and at least one main tank for accumulating oil arranged on the base machine, and wherein each of said two independent and separate hydraulic circuits (S; U) receives the mechanical power required to actuate the respective pump assembly from the main power engine of the base machine. |
