Automatic concrete feeding machine with frequency control of motor speed system, material door switch is controlled by a separate hydraulic unit, hopper with electric hoist,equipped with vibration device for meterial. according to user requirements, make the left and right symmetrical configuation operation the hopper can cusotmized follow your requirements ,normal ,there have 1-3CBM capacity. Product description Concrete pile injection machine is composed of the pile pump, the metering flat trolley and the control part, it is the core part of the automatic pile production line, and the pile automatic pump system can receive the actual weight of the concrete in the steel mould in real time, so as to control the walking speed of the measuring flat trol…