APPARATUS FOR THE PRODUCTION OF FINISHED PRESTRESSED CONCRETE MEMBERS

摘要

An apparatus for continuously producing finished prestressed concrete members along a prestressing bed with a plurality of prestressing members which extend along the prestressing bed and which are arranged to pass through the concrete members when formed. The apparatus includes a scaffold which spans the prestressing bed in a gantry-like fashion and is supported for movement in a direction parallel to the bed. The scaffold is provided with at least two adjacent stations for producing the finished prestressed concrete members. A number of vertically movable lower form members are carried on the scaffold for movement to a lowered position on the prestressing bed for receiving fresh concrete to form the concrete members. After the members are formed and bonded the lower form member may be raised away from the finished member. Upper form members corresponding in number to the lower form members are also carried on the scaffold for vertical movement into and out of the concrete member forming position. The upper form members are also horizontally movable longitudinally along the scaffold. Thus with this apparatus fewer forms are necessary in a mechanized production of concrete members.