When an engine (70) is started in a state where a support member (21) of a multi-coupler (20) is attached to a mating support member (22), the pressure of hydraulic oil increases in a detection target pipeline part (32B). A pressure detection unit (80) detects the pressure of the hydraulic oil in the detection target pipeline part (32B). A connection state determining unit (91) determines whether a tank-side pipeline part (31A) and a motor-side pipeline part (31B) are connected to each other, based on the pressure. When the connection state determining unit (91) determines that the tank-side pipeline part (31A) and the motor-side pipeline part (31B) are not connected to each other in a state where the engine (70) is started, a pressure increase suppression unit carries out an operation for suppressing an increase in the pressure of a hydraulic motor (12).
WINCH DRIVE DEVICE IN CRANE
WINDENANTRIEBSVORRICHTUNG IN EINEM KRAN
DISPOSITIF D'ENTRAÎNEMENT DE TREUIL DANS UNE GRUE
06.03.2024
Patent
Elektronische Ressource
Englisch
Crane winch protection device, crane and crane winch protection method
Europäisches Patentamt | 2020
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