Crane-arm for hydraulic excavator, has electric power generator driven by hydraulic motor supplied via hydraulic line on excavator

摘要

The crane-arm (1) is attached to the excavator arm (3) via a receiving plate (6) and to a pivot mechanism (2) directly or indirectly via a quick-release device (5). The crane-arm includes a hydraulic motor supplied from a hydraulic line (7) on the excavator side. The crane arm includes an electric power generator (11) driven by the hydraulic motor. A control device (12) regulates the flow of current. Radio modems are used in the wireless connection between the control device and an operating part in the driver's cab.