Patent ID: 7556107

Claim:
A construction machine for drilling and/or pile driving and foundation construction, the construction machine comprising: a chassis, a drive head, a leader arranged on the chassis for the longitudinally displaceable guidance of the drive head, the leader being pivotally arranged on the chassis about a pivot axis that extends approximately parallel to a longitudinal axis of the leader, a pivot drive for pivoting the leader about the pivot axis, at least one locking element displaceable between a first position, in which it fixes the leader on the chassis in a rotationally fixed manner about the pivot axis, and a second position, in which the leader is released, and a setting device for remote-controlled displacement of the at least one locking element a shaft included on one of the leader and the chassis, the shaft being formed around the pivot axis, a sleeve surrounding the shaft and arranged on the other of the chassis and the leader, and a locking element formed on the sleeve, the locking element being designed in a ring-shaped manner and surrounding the shaft arranged on the one of the leader and the chassis.