Rotating parking brake control device for construction machinery
First Claim
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, whereinthe 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, andthe 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.
1 Assignment
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Accused Products
Abstract
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.
9 Citations
8 Claims
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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:
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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, and the 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, and the 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. - View Dependent Claims (2, 3, 4, 6, 7, 8)
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5. A rotating parking brake control device for construction machinery, which is provided with a brake controller which controls a rotating parking brake for braking a moving body of the construction machinery, wherein:
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the brake controller is configured to include; a first controller connected to the rotating parking brake and configured to performing drive control of an upper rotating body and to generate a brake release command signal; 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 an inter-controller signal line transmitting the brake release command signals generated by the first and the second controllers between the first and the second controllers; the first controller is configured to receive an input of the brake release command signal generated by the second controller and transmitted from the second controller through the inter-controller signal line, the first controller is also configured to receive an input from at least one sensor detecting an operation of the moving body, and the first controller outputs the brake release command signal when the input from the sensor denotes operation of the moving body and agrees with the brake release command signal received from the second controller, and the first controller outputs no brake release command signal when the input from the sensor indicates no operation of the moving body and differs from the brake release command signal received from the second controller; and the second controller is configured to receive an input of the brake release command signal generated by the second controller and transmitted from the first controller through the inter-controller signal line input, the second controller is also configured to receive an input from at least another sensor detecting operation of the moving body, and the second controller outputs the brake release command signal when the input from the another sensor denotes operation of the moving body and agrees with the brake release command signal received from the first controller, and the second controller outputs no brake release command signal when the input from the another sensor indicates no operation of the moving body and differs from the brake release command signal received from the second controller.
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Specification