CARGO-HOISTING MACHINE CONTROL SYSTEM (VERSIONS) Russian patent published in 2009 - IPC B66C13/18 B66C23/88 B66C15/00 

FIELD: transport.

SUBSTANCE: system contains hydraulic, electrohydraulic and/or electric drives of crane mechanisms, control device for these drives, and fuel supply control device connected to it. In process of crane operation automatic fuel supply change is performed depending on load position and/or speed of cargo relocation. In second version of system fuel supply change is automatically related to approach or touch of crane operator's hand to drive control handle. Drive control is made as control unit containing control handle, handle position sensor, and controller with outputs connected immediately, or via additional output device, to control drives' inputs and to device controlling fuel supply. Level of fuel supply in general case is different for different drives and directions of crane movement. After handles of crane drive control are returned to neutral position or after hands are removed from handles, value of motor angular velocity is preserved within preset interval after which minimum preset velocity of motor blank cycle is automatically established.

EFFECT: decrease of specific fuel consumption, efficiency increase, enhancement of usability of crane control and of safety of its operation.

17 cl, 2 dwg