Rapid action coupling for coupling tool to an extension arm of hydraulic excavator comprises tool-side coupling part, machine-side coupling part and an energy circulation coupling assigned cleaning device for cleaning energy connectors

摘要

Rapid action coupling for coupling a tool to an extension arm (2) of a hydraulic excavator (1), etc. comprises a tool-side coupling part (8) and a machine-side coupling part (3) which can be locked together. An energy circulation coupling (12), especially a hydraulic coupling, is provided for coupling a tool-side energy connector to a machine-side energy connector. The energy circulation coupling is assigned a cleaning device (17) for cleaning the energy connectors. Preferred Features: The contact-free cleaning device consists of a pressurized fluid device (19, 21) having at least one cleaning nozzle (18) for spraying the pressurized fluid onto the energy connectors.