LAUNCHING APPARATUS FOR MOVING GIRDERS FORWARDLY FOR INCREMENTAL LAUNCHING METHOD

摘要

PURPOSE: A girder extruder for a continuous extrusion method is provided to stably execute the construction the by preventing the damage of the slipping surface due to the weight of a girder and by easily pressing out a girder without the waste of force. CONSTITUTION: A girder extruder(100a) for a continuous extrusion method is composed of a lower lifting block(120), an upper lifting block(130), a standing jack device(140), and an advancing jack device(150). The lower lifting block is installed on the lower structure to be moved vertically, and a downward slope surface is formed on the lower lifting block. A downward slipping surface(131) is formed under the upper slipping block. The downward slipping surface corresponds to the downward slope surface of the lower lifting block. The upper slipping block is set on the downward slope surface of the lower lifting block through the downward slipping surface. The standing jack device is installed at the lower part of the downward lifting block. The standing jack device is vertically extended to make the lower lifting block and the upper slipping block go up/down. The advancing jack device makes the lower slipping block go back and forth.