There is provided a slewing control device (13) that enables to detect breakdown of a driving system of a mechanical brake (4), and generate a torque for holding a slewing body in a stopped state to thereby prevent movement of the slewing body when an anomaly has occurred. In a working machine for driving a slewing body by an electric motor (1), judgment is made as to whether a mechanical brake (4) is in an inconsistent state, based on a command to be outputted to a brake circuit (B), and a pressure detected by a brake pressure sensor (17). The inconsistent state is a state that the mechanical brake (4) is in a brake released state when an activation command for switching the mechanical brake (4) to a brake activated state is outputted. If it is judged that the mechanical brake (4) is in the inconsistent state, a command for obtaining a braking torque for holding the slewing body in a stopped state is outputted to the electric motor (1).
Slewing control device and working machine incorporated with the same
Drehwerkssteuerungsvorrichtung und Arbeitsmaschine damit
Dispositif de commande de giration et machine de travail dotée de celui-ci
2017-05-10
Patent
Electronic Resource
English
Slewing mechanism, slewing device, engineering machinery and slewing control method
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