The present disclosure relates to a hydraulic control circuit for crane slewing gear having directional valves arranged in work lines and controllable separately for the inflow and outflow to the hydraulic motor for the carrying out of a rotational movement of the slewing gear, wherein an inflow valve serves the control of the oil inflow from a hydraulic pump via the work line to the hydraulic motor and an outflow valve is provided via which the hydraulic motor can be relieved to the tank, wherein the work lines are each connected via at least one check valve to a common inlet of the outflow valve to relieve the hydraulic motor independently of the direction of rotation of the slewing gear via an outflow valve into the tank.
HYDRAULIC CONTROL CIRCUIT FOR CRANE SLEWING GEAR
2017-09-07
Patent
Elektronische Ressource
Englisch
Slewing crane and method for aligning a slewing crane
Europäisches Patentamt | 2021
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