ROTATING PARKING BRAKE CONTROL DEVICE FOR CONSTRUCTION MACHINERY
First Claim
1. A rotating parking brake control device for construction machinery to control a rotating parking brake of the construction machinery, comprising:
- first control means which controls drive of a rotation electric motor; and
second control means which is control means independent of the first control means and generates a brake release command signal to output it to the brake.
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.
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Citations
11 Claims
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1. A rotating parking brake control device for construction machinery to control a rotating parking brake of the construction machinery, comprising:
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first control means which controls drive of a rotation electric motor; and second control means which is control means independent of the first control means and generates a brake release command signal to output it to the brake. - View Dependent Claims (2, 3, 4, 5, 8, 9, 10, 11)
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6. A rotating parking brake control device for construction machinery, which is provided with control means which controls a rotating parking brake of the construction machinery, wherein:
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the control means is configured to include; first control means connected to the brake, which controls drive of an upper rotating body, and generates a brake release command signal; second control means which is control means independent of the first control means, and generates a brake release command signal; and an inter-control means signal line which transmits the brake release command signal generated by the second control means to the first control means; and the first control means is configured to output the brake release command signal to the brake when the brake release command signal is generated by the first control means and the brake release command signal is transmitted from the second control means through the inter-control means signal line.
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7. A rotating parking brake control device for construction machinery, which is provided with control means which controls a rotating parking brake of the construction machinery, wherein:
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the control means is configured to include; first control means which controls drive of an upper rotating body and generates a brake release command signal; second control means which is control means independent of the first control means, connected to the brake, and generates a brake release command signal; and an inter-control means signal line which transmits the brake release command signal generated by the first control means to the second control means, and the second control means is configured to output the brake release command signal to the brake when the brake release command signal is generated by the second control means and the brake release command signal is transmitted from the first control means through the inter-control means signal line.
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Specification