DEVICE TO CONTROL AMOUNT OF OIL FORCED TO TRAVELLING CRANE Russian patent published in 2011 - IPC B66C13/18 B66C23/36 

FIELD: transport, package.

SUBSTANCE: invention relates to device that control amount of oil forced to travelling crane. Proposed device comprises primary and auxiliary hydraulic pumps, flow rate control valve, controller, engine rpm controller and forced oil flow rate controller. In compliance with first version, engine rpm controller and forced oil feed controller run in three operating conditions. Controllers allow controlling rpm of oil feed rate in response to signal entered into crane. In compliance with second version, control valve is made up of stack valve with assemblage of directed control valves arranged in compliance with layout of indirect excitation circuit of crane drives. In compliance with third version, apart from job signal, controller generates loading signal corresponding to crane load factor.

EFFECT: reduced noise of engine, reduced fuel consumption.

6 cl, 10 dwg