Deep excavation dipper integrated boom for excavator on track to carry out earthworks, has hydraulic winch and winder/unwinder arranged at rear of line so as to be found outside vision field of operator, in operational position of boom

摘要

The boom (3) has a hydraulic winder/unwinder (7a) for winding/unwinding a flexible hose (8a) of a hydraulic flexible system extended between a deep excavation dipper (9) and the hydraulic winder/unwinder, where the boom is removable. A side hydraulic winch (5a) and the hydraulic winder/unwinder are arranged at the rear of a line passing via a side pulley (10a) and a proximal arm articulating point (11) so as to be found outside a vision field of an operator found in a rotating turret (12), in operational position of the boom.