Construction lift for transporting heavy loads has tension and compression bars, top and bottom struts, centering bar, cross-pieces and tensioning members and belt

摘要

The support consisting of tension and compression bars connected with the wall (4)and the parapet of the wall-opening. Two compression bars (1) on both sides of the wall-opening (5) are joined by top and bottom struts (2,3). The top struts are connected to a centering-bar (6) itself joined to horizontal cross-pieces (7) on both sides of the wall opening. The bottom struts and cross-pieces each are joined to tensioning members (8) of which that of the bottom struts acts as pulley for a tensioning belt.