DEVICE FOR LIFT-AND-CARRYING FACILITY BOOM REACH CHANGE (VERSIONS) Russian patent published in 2010 - IPC B66C23/82 

FIELD: transport.

SUBSTANCE: invention relates to handling equipment and can be used to change boom reach of crane, manipulator and similar hoisting machines and devices. In the first version, device for lift-and-carry facility boom reach change is installed on interconnected by boom hinge boom and foot and contains hydraulic cylinder pivotally connected with crossbar one end of which is pivotally mounted on the foot and the second end is connected with slider made with possibility to move alond guides which are mounted on the boom and made with curvilinear profile. In the second version, device for lift-and-carrying facility boom reach change is installed on interconnected by boom hinge the boom and the foot and contains hydraulic cylinder pivotally connected with crossbar one end of which is pivotally mounted on the boom and the second end is connected with slider made with possibility to move along guides which are made with curvilinear profile and mounted on the foot.

EFFECT: lower power of lift-and-carry facility drive power and increased efficiency of its use when boom is swinging during lifting or lowering.

10 cl, 9 dwg