Turning drive device

摘要

A turning drive device is provided that converts power of an engine into electric power and turns a turning body using the converted electric power. The turning drive device includes an electrical energy storage unit that stores electrical energy, a turning motor that is driven by an electric power from the electrical energy storage unit and is configured to drive a turning body, an inverter that controls a drive operation of the turning motor, a controller that is connected to the inverter via a control signal line, and an emergency operation part that supplies a command to the inverter when an abnormality occurs in a control operation of the turning motor. The inverter blocks the control signal line based on a signal from the emergency operation part and controls the drive operation of the turning motor.

主权项

1. A turning drive device that converts power of an engine into electric power and turns a turning body using the converted electric power, the turning drive device comprising:
an operation unit including an operation lever for the turning body; an electrical energy storage unit that stores electrical energy; a turning motor that is driven by an electric power from the electrical energy storage unit and is configured to drive the turning body; an inverter that controls a drive operation of the turning motor; a controller that is connected to the inverter via a control signal line and that is configured to operate the turning motor by generating a speed command according to an input of the operation lever for the turning body and by outputting a command to the inverter; and an emergency operation part that is provided separately from the operation lever and is configured to operate the turning motor by outputting another command to the inverter; wherein the emergency operation part is configured to be operable when an abnormality occurs in a control operation of the turning motor by the controller.