Analysis and Research on Dynamic Characteristics of Hydraulic Bracket Hydraulic System
In order to realize the real-time and stable pressure control of emulsion pumping station,and to rapidly advance the working face of coal mine,the overall model of hydraulic system of bracket is established,and its dynamic characteristics are analysed.The average speed of a single hydraulic bracket to complete the lifting,lowering and pulling of columns and frames is 0.11 m/s,0.058 m/s and 0.083 m/s,and the time is 8 s,3.12 s and 4.5 s in order,and the working time of hydraulic bracket to move frame is 15.62 s,which meets the time of hydraulic bracket to follow the machine to move frame.The time is 15.62 s,which meets the time of hydraulic bracket moving with the machine;and further analyses when the two brackets are inserted to move the bracket,it can obviously improve the speed of bracket moving,and the support de-supporting force when the column is lifted.
hydraulic bracketfollowing machine operationhydraulic system
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万方数据
维普
