Research on jacking hydraulic system of mine-used pipe-jacking machine
WANG Lei
LI Liang
ZHANG Li
WANG Yuming
Abstract：In view of the problem that it will lead to jacking direction offset while four oil cylinders in the jacking system for underground coal mine jacking construction had different jacking speeds,a pipejacking hydraulic system based on load sensitive control technology was designed.The structure and working principle of pipe jacking machine,working principle and parameters calculation of hydraulic system were analyzed in details.The hydraulic system uses electro-hydraulic controlled quadruple loadsensitive multi-way values to regulate pump flow and pressure so that the speed of each jack cylinder is not affected by external load changes,and synchronous jacking is achieved,and direction offset phenomenon caused by imbalance of jacking speed of fuel tanks is reduced.
Keywords：coal miningpipe-jacking machinejacking hydraulic systemjacking speedload sensitive controlelectro-hydraulic proportional control
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 1-5 )