Abstract: The invention pertains to a construction machine with a rapid-action coupling for coupling a tool to a boom, wherein a rapid-action coupling part is provided on the boom side and a rapid-action coupling part is provided on the tool side such that an energy circuit can be produced, and wherein the rapid-action coupling serves for automatically coupling an energy connection on the tool side to an energy connection on the boom side. According to the invention, an identification system is provided which comprises means on the tool side which serve for identifying the type and the size of the tool, as well as a device on the construction machine side which serve for reading out and processing the information.

Abstract: A quick coupling for coupling a tool to the boom of a hydraulic excavator and the like with a quick coupling part at the boom side and a quick coupling part at the tool side which can be latched together via a pair of spaced latching axles and with a power circuit coupling, in particular a hydraulic coupling, for the automatic coupling of a power connector at the tool side to a power connector at the boom side, wherein the power circuit coupling has a power coupling part at the boom side and a power coupling part at the tool side which ar arranged at the quick coupling part at the boom side or at the quick coupling part at the tool side such that they automatically couple as soon as the two quick coupling parts are pivoted together into their latching position about a first of the two latching axles.

Abstract: The invention relates to a quick-change attachment to connect a tool, preferably, to the boom of a hydraulic excavator, comprising a boom-connecting quick-change attachment component to accommodate a tool, one end of which has a pin, and the other end of which is retained within a bearing of the quick-change attachment by positive-fit or friction engagement. According to the invention, a bushing in the form of a half-liner having a large support angle is inserted in the bearing.

Abstract: The invention pertains to a construction machine with a rapid-action coupling for coupling a tool to a boom, wherein a rapid-action coupling part is provided on the boom side and a rapid-action coupling part is provided on the tool side such that an energy circuit can be produced, and wherein the rapid-action coupling serves for automatically coupling an energy connection on the tool side to an energy connection on the boom side. According to the invention, an identification system is provided which comprises means on the tool side which serve for identifying the type and the size of the tool, as well as means on the construction machine side which serve for reading out and processing the information.

Abstract: The present invention relates to a quick coupling for coupling a tool to the boom of a hydraulic excavator and the like with a quick coupling part at the boom side and a quick coupling part at the tool side which can be latched together via a pair of spaced latching axles and with a power circuit coupling, in particular a hydraulic coupling, for the automatic coupling of a power connector at the tool side to a power connector at the boom side, wherein the power circuit coupling has a power coupling part at the boom side and a power coupling part at the tool side which are arranged at the quick coupling part at the boom side or at the quick coupling part at the tool side such that they automatically couple as soon as the two quick coupling parts are pivoted together into their latching position about a first of the two latching axles.

Abstract: The invention relates to a rapid coupling for connection of an implement to an operating arm, with at least one pair of lock pins that are movably guided toward each other in alignment and that can be moved toward and away from each other by a drive and that penetrate into an aligned lock hole in the implement in their extended lock position. According to the invention, pre-centering device are provided to pre-center the retracted lock pins on the lock holes.