Current post drill is controlled by manpowerimplemented hydraulic system. This control system requires operators to focus on the hydraulic pressure indication during operation in the purpose of pressure level maintenance. An automatic hydraulic control system based on common hydraulic components (cartridge valve etc) was developed. The automatic control system was capable to realize status auto switch, so human labor was expired, the control operation was simplified and the system reliability was enhanced because of its mutual hydraulic lock.
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张戚.架柱式钻机全液压自动控制装置的研究[J].机床与液压,2015,43(10):87-90. . Research on the Post Drill Hydraulic Automatic Control Device[J]. Machine Tool & Hydraulics,2015,43(10):87-90