Rotating parking brake control device for construction machinery

摘要

The disclosed rotating parking brake control device obviates the need for an operator to operate an emergency-stop switch. A hybrid controller, to which a brake is connected, outputs a drive control signal to a rotating electric motor to control drive of an upper rotating body and also controls the brake by generating a brake release command signal and outputting the brake release command signal to the brake. A pump controller also generates a brake release command signal, and the brake release command signal generated by the pump controller is transmitted to the hybrid controller through an inter-controller signal line. The brake release command signal is outputted to the brake only when the brake release command signal is generated by the hybrid controller and the brake release command signal is transmitted from the pump controller through the inter-controller signal line.

主权项

1. A rotating parking brake control device for construction machinery adapted to control a rotating parking brake for braking a moving body of the construction machinery, comprising:
a first controller performing drive control of a rotational electric motor and configured to generate a brake release command signal and to output the brake release command signal to the rotating parking brake; and a second controller operating independent of the first controller concerning the performing drive control of the rotational electric motor and configured to generate a brake release command signal and to output the brake release command signal to the rotating parking brake, wherein the first controller receives inputs of the brake release command signal from the second controller and an operation signal,
the first controller outputs the brake release command signal when the input operation signal denotes operation of the moving body and agrees with the brake release command signal input from the second controller, andthe first controller outputs no brake release command signal when the input operation signal denotes no operation of the moving body and differs from the brake release command signal input from the second controller, and the second controller receives inputs of the brake release command signal from the first controller and an operation signal,
the second controller outputs the brake release command signal when the input operation signal denotes operation of the moving body and agrees with the brake release command signal input from the first controller, andthe second controller outputs no brake release command signal when the input operation signal denotes no operation of the moving body and differs from the brake release command signal input from the first controller.