Schaltbares Abstützelement

摘要

A support (1) is designed to be disconnected by a lifting movement of a control cam. To this end, it has radially movable connecting means (12) inside it. To disconnect the support (1), said connecting means (12) are moved inwards by hydraulic means, while at the same time a piston (4) communicating with the pull-rod is held away from the cam by hydraulic means.