Patent ID: 7963054
Filing Date: 2011-06-21
Classification: E02F

Abstract:
1. A coupling apparatus with a device for automatic connection of hydraulic power lines, for attaching a working tool to a tool mount of an excavator boom by way of a quick-action coupling formed with a hook connection for connecting the tool mount to the working tool, comprising: supply connecting pieces immovably mounted to the tool mount; power take-off connecting pieces, corresponding to said supply connecting pieces, fixed on a carrier on the working tool; said supply connecting pieces and said power take off connecting pieces being configured to form hydraulic connections; a blocking unit with a movable bolt element movably disposed along a given direction of movement between a closed position and an open position, and an actuating unit for operating said blocking unit; wherein, when said blocking unit is closed, said power take-off connecting pieces are connected to said supply connecting pieces and, when said blocking unit is open, said power take-off connecting pieces are detached from said supply connecting pieces; said carrier being movably mounted on the working tool for movement along a given direction of movement between a moved-forward position and a retracted position; and said carrier having a driver piece for engagement with an operating element coupled to said movable bolt element; and wherein the given direction of movement of said carrier corresponds to the direction of movement of said bolt element.