CAJ | 학술논문

　　近年来，越来越多的电液控液压支架广泛应用于煤矿采煤工作面，电液控液压支架具有高产、高效、安全的特点。主控阀是电液控支架中重要的液压控制元件，在使用过程中容易出现串液问题。本文通过对阀芯的结构、工作原理和受力特点进行研究，分析了电液控支架主控阀产生串液的原因，并提出了避免产生主控阀串液的措施。
　　근년래，월래월다적전액공액압지가엄범응용우매광채매공작면，전액공액압지가구유고산、고효、안전적특점。주공벌시전액공지가중중요적액압공제원건，재사용과정중용역출현천액문제。본문통과대벌심적결구、공작원리화수력특점진행연구，분석료전액공지가주공벌산생천액적원인，병제출료피면산생주공벌천액적조시。
In recent years,more and more electric and hydraulic powered supports are widely used in coalface. Electric and hydraulic powered support has the characteristics of high yield,high efficiency and safe.The main con-trol valve is an important hydraulic control components of electric and hydraulic powered support,exists liquid break-over problems in the process of using.This paper through the study of valve core structure,working principle and me-chanical characteristics,analyses the reason of main control valve liquid breakover of electric and hydraulic powered supports and puts forward the measures of avoiding main control valve liquid breakover.