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[CN 201610722746.2] Electro-hydraulic proportional control system for hydraulic machine
[CN 201610722746.2] Title of Electro-hydraulic Proportional Adjustment Control System for Hydraulic Machine: Application Number of Electro-hydraulic Proportional Adjustment Control System for Hydraulic Machine: CN 201610722746.2 Applicant: Jiangsu University Application Date: August 25, 2016 Patent Type: Application for Invention The present invention relates to the technical field of hydraulic machines, in particular to an electro-hydraulic proportional adjustment control system for hydraulic machines. The system adopts a proportional speed control valve to control the oil intake of the master cylinder when the slider is down, so as to achieve the purpose of controlling the downward speed of the bad block. At the same time, the system adopts a proportional pressure reducing valve to control the oil pressure at the oil inlet of the jacking cylinder, so as to control the pressing force provided by the pressing ring. The displacement information of the slider of the system is collected by the grating ruler displacement sensor and fed back to the PC through the digital-to the digital-to the digital-to the converter, the flow rate at the oil inlet of the master cylinder is monitored by a flow sensor and fed back to the PC through a digital-to-analog converter; the crimping force information provided by the system crimping ring is collected by the jacking cylinder pressure sensor and fed back to the PC through the digital-to-analog converter; At the same time, the master cylinder pressure sensor monitors the oil inlet pressure of the jacking cylinder and feeds it back to the PC through the digital-to-to-analog converter.
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