Based on the frequently-occurred failures of the old cantilever stacker reclaimer boom pitching mechanism,theoretical analysis of hydraulic system was carried out,and the valve block of the boom pitching hydraulic cylinder was reformed,and it was set in the rodless cavity of the hydraulic cylinder as a whole.Additionally,the safety and reliability of the equipment were improved by the addition of pressure maintaining components and deceleration valves,which provides useful reference for the improvement of the hydraulic system of the traditional bucket wheel stacker reclaimer.
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