CONTROL OF LOWERING LIGHT-WEIGHT MATERIAL AND DISC BRAKE UNIT FOR SAME

摘要

PURPOSE:To improve the response in operation and control to achieve a lowering speed desired by an operator by controlling the liquid pressure of actuating liquid supplied from a power unit, and slipping a disc brake while usage. CONSTITUTION:Actuating liquid of a predetermined liquid pressure obtained from a power unit 1 is inputted through a liquid passage 2 into a control valve 3. At this time, a signal from an operation lever 8 or an operation pedal 9 operated by an operator is inputted to a control amplifier 6, and the opening of the control valve 3 is controlled by an output signal from the amplifier 6. By programming data for matching the operation feeling of the operator with slip characteristics of the disc brake preliminarily in the amplifier 6, the liquid pressure of supplied actuating liquid from the power unit 1 to calipers 5a, 5b can be adjusted be a proper size. By then controlling the opening condition of the control valve 3 densely based on the signal from the amplifier 6, the liquid pressure of actuating liquid applied to the calipers 5a, 5b can be changed finely.