2023年7月25日发(作者：)

专利内容由知识产权出版社提供专利名称：Method and apparatus for pumpingconcrete to form structure at elevatedheights发明人：McGowan, Joseph Lowry申请号：EP81303091申请日：19810707公开号：EP0043730A3公开日：19820310专利附图：摘要：A method and apparatus is disclosed for continuously pumping flowableconcrete mix to elevated heights for introduction into forms (22, 24) used in thefabrication of annular structures such as concrete hyperbolic cooling towers (10). A towercrane (26) is erected in the center of the circle for the hyperbolic structure and concreteconveying piping (52, 100) is provided for raising mix to a lateral conduit (82) carried by asecondary boom (64) suspended from the swingable overhead jib (42) of the crane. Apumping unit (50) at ground level forces concrete mix up the vertical piping on the towerand thence through the boom supported conduit (82) for delivery into the form structure(22). The jib (42) and thereby the boom (64) suspended therefrom are swingable throughan arc of 180° in one direction to cover one half of the form structure (22, 24) and thenthe jib (42) and boom (64) may be swung in the opposite direction through the remaining180° arc for introduction of mix into the form structure (22, 24). The tower crane (26) is ofthe type having a climbing cage permitting lifting of additional mast units to the top ofthe stack (32) thereof using the jib as a lifting medium to increase the height of the ponding pipe sections (52) on the tower mast units allow delivery of concrete mixto increasingly higher elevations as fabrication of the hyperbolic structure length of the secondary boom (64) and thereby the laterally extending conduit (82)supported thereby may be increased or decreased as necessary to accommodate thechanging diameter of the hyperbolic concrete shell (20) during construction.申请人：The Marley Company更多信息请下载全文后查看