Swing valve driving device of piston pump for concrete pump car

摘要

The disclosure provides a smooth intake of concrete, prevents premature wear due to friction with the concrete and shortens the life of the parts, and facilitates replacement of parts and solves manufacturing difficulties. will be.;To realize this, the present invention is connected to the valve plate 12 of the hopper 10 filled with concrete by the ends of the cylinders 6 and 8 coupled so that the pistons 2 and 4 slide by a hydraulic pump. One end of the swing valve 14 bent in the valve plate 12 is alternately communicated to one cylinder 6 and the other cylinder 8 in accordance with the rotation of the swing valve (14). In the swing valve driving apparatus of a pump for a concrete pump car is provided, the ring gear 24 is fixed and mounted on the outer peripheral surface of the rotation center end 22 of the swing valve 14 extending to the discharge pipe 16, It provides a swing valve driving apparatus for a pump for a concrete pump car, characterized in that the gear 26 of the drive means is engaged with the ring gear 24.