METHOD AND DEVICE TO PROVIDE ACCELERANT AUTOMATICALLY FOR SHOTCRETE, AND CONCRETE PLACER INSTALLED THE DEVICE

摘要

PURPOSE: A supply method of accelerating agent for shotcrete, a device thereof and a shotcrete installing device in which the device is installed are provided to optimize mixing ratio of concrete and quick setting admixture. CONSTITUTION: A supply method of accelerating agent for shotcrete comprises the following steps: (S100) installing a flow sensor up on a flow path of concrete and measures the flow rate in real time basis; (S200) transmitting a concrete flow rate data to a controller and calculating quick setting admixture supply quantity or quick setting admixture supply rate in order to output control signals; (S300) transmitting the control signals to a regulator and controlling the rotation speed of a motor by the regulator; (S400) controlling the supply quantity of the quick setting admixture by the rotating speed of the motor; and (S500) supplying the controlled supply quantity of the controlled quick setting admixture by using an air compressor pump. [Reference numerals] (AA) Start; (BB) End; (S100) Measuring the flow rate of concrete; (S200) Calculating the supplying rate of a quick setting admixture and outputting control signals; (S300) Controlling the rotating speed of a motor; (S400) Controlling the supplying rate of the quick setting admixture; (S500) Supplying the quick setting admixture