Patent ID: 7011108

Claim:
A device for operating an articulated boom ( 22 ) linked to a boom block ( 21 ), in particular a concrete placement boom, which boom block ( 21 ) is rotatable via a preferably hydraulic actuated drive assembly, and which articulated boom ( 22 ) includes at least three boom segments ( 23 through 27 ), which are each respectively limitedly pivotable relative to the boom block ( 21 ) or an adjacent boom segment about articulation axes ( 28 through 32 ), which axes are parallel to each other and perpendicular to the axis of rotation ( 13 ) of the boom block ( 21 ), by means of respectively one preferably hydraulic actuated drive assembly ( 34 through 38 ), with a control device ( 62 ) for movement of the boom with the aid of individual drive assemblies and/or a supply assembly ( 100 ) for supplying energy or hydraulic pressure to associated actuating elements ( 94 ), and with a remote control device ( 50 ) communicating with an input stage ( 60 ) of the control device ( 62 ), which includes at least one remote control element ( 52 , 54 ) moveable back and forth by hand through a zero position in respectively at least one main adjustment direction and thereby generating a remote control signal, as well as additional remote control signal emitting switch elements ( 64 , 66 , 66 ′), wherein the control device ( 62 ) includes a computer assisted first circuit arrangement ( 80 ) receiving information from the remote control signal via the input stage ( 60 ), which is connected on the output side with control inputs ( 88 , 90 ) of the actuating elements ( 92 , 94 ), wherein the control device ( 62 ) includes an interruption element ( 112 , 112 ′) which, when the at least one remote control element ( 52 ) is in the zero position, interrupts the connection to the control inputs ( 90 ) of the actuators associated with the drive assembly and/or the supply unit ( 100 ) for providing the energy or hydraulic pressure to the associated control elements ( 94 ), wherein the interruption can be selectively bypassed by operation of a supplemental switch or key element ( 66 ).