Combined drill carriage and control box - includes hydraulic motor and is for mounting on orientable jib of excavator, with one hydraulic feed pipe from cabin

摘要

The combined drill (7) carriage (6) and control box is for mounting on the orientable jib (4) of a mechanical excavator (1). The carriage includes a hydraulic motor to drive the drill. The provision of the control box on the carriage rather than the operator's cabin (2) reduces the complexity of hydraulic fluid feed pipes. The hydraulic circuit includes a single main pipe from a cabin (2) console (24) to the carriage control box, and subsidiary pipes from the carriage control box to the carriage-mounted motor. The control console (24) in the cabin (2) incorporates coordinating electric control gear.