Abstract:
A container is produced from a single-layered, helically bent sheet metal strip. In the strip's upper or lower border region a first helically running border portion of the strip is bent out via a helically running outwardly bent edge with a curved region toward the outside of the container as a protruding flange. A second helically running border portion is in the lower/upper border region. The border regions each border one another adjacently height-wise and are connected to one another in a fluid-tight manner via a continuous, helically running welded joint. The second border portion runs rectilinearly in the plane of the strip and the welded joint has a first and a second weld seam. The first and second weld seams are applied from the outside and the inside of the container, respectively, and the two weld seams are fused to each other in the weld route thereof.
Abstract:
A container (10) is produced from a spiral-shaped, bent sheet strip (20) having a first edge section (22) extending in a spiral shape, being bent, and forming a bending edge (24) extending in a spiral shape toward the inside or the outside of the container (10). The sheet strip (20) has a second edge section (32) opposite the first edge section (22) in the longitudinal direction of the sheet strip (20) and extends in a spiral shape. The second edge section (32) overlaps a third section (28) opposite the first edge section (22) in relation to the bending edge (24) and is adjacent to the bending edge (24). The second edge section (32) and the third section (28) are welded to each other in the region of the overlap (30). The welding seam (40) extends at least partially into the region between the second edge section (32) and the third section (28) of the sheet strip (20).
Abstract:
A system for storage of green fodder and the like includes a cylindrical storage tank removably carried on a trailer which can be towed by a tractor. The frame of the trailer carries a tiltable platform having a rotatable plate on which the tank rests. The frame also carries a vertically movable apparatus for supporting either compaction rollers insertable into the tank top for compressing fodder as it is conveyed into the tank, or an elevator mechanism for lifting the tank away from its bottom cover to expose compacted fodder for removal. The tank is rotated during loading/compaction and removal. Compression of the fodder greatly increases the amount of fodder storable in each tank. After filling the platform is tilted, the tank is removed and can be rolled to a storage location with its axis horizontal.
Abstract:
A container is produced from a single-layered, helically bent sheet-metal trip (20). A first, helically running peripheral portion (22) of the sheet-metal strip (20) is bent out in the direction of the outside of the container (10) to form a helically running bent out edge (24). A second, helically extending peripheral portion (26) of the sheet-metal strip (20) overlaps a third portion (28) of the sheet-metal strip (20) on the inside of the container (10). The third portion is adjacent to the bent-out edge (24) and extends in the direction of the second peripheral portion (26) from the bent out edge (24). The second peripheral portion (26) is connected in a fluid-tight manner to the third portion (28) of the sheet-metal strip (20) on the inside of the container (10).
Abstract:
A digester with an agitator and a method of operating an agitator in a digester can be used, for instance, in agricultural biogas plants and communal clarification plants. The digester with an agitator and the method feature improved mixing of the waste products in the digester and enhanced digester efficiency. The digester includes a preferably round bottom surface, a filler rod and an agitator with a drive axle, preferably arranged on the periphery of the digester. The agitator is mounted in a stirring shaft or stirring pipe arranged underneath the filler standard. The method for operating the agitator in a digester involves stirring the content while material is fed into the digester through the filler standard.
Abstract:
A suspension cable is encased in a metal pipe formed from a metal strip wound in a series of adjacent helical windings on the cable. The longitudinal edges of adjacent windings are connected by a continuous tight fold.
Abstract:
The invention relates to container produced from a single-layered, helically bent sheet-metal trip (20), wherein a first, helically running peripheral portion (22) of the sheet-metal strip (20) is bent out in the direction of the outside of the container (10) to form a helically running bent out edge (24), characterized in that the second, helically running peripheral portion (26) of the sheet-metal strip (20) overlaps a third portion (28) of the sheet-metal strip (20) on the inside of the container (10), said third portion being adjacent to the bent-out edge (24) and extending in the direction of the second peripheral portion (26) front the bent out edge (24), and in that the second peripheral portion (26) is connected in a fluid-tight manner to the third portion (28) of the sheet-metal strip (20) on the inside of the container (10).
Abstract:
A suspension cable is encased in a metal pipe formed from a metal strip wound in a series of adjacent helical windings on the cable. The longitudinal edges of adjacent windings are connected by a continuous tight fold.
Abstract:
A cable for structures, especially suspension bridges, has a plurality of bundled tension elements spacedly surrounded by a tubular sheath, the space between tension elements and sheath being filled with a material, preferably injected mortar. To reduce the cost of producing, transporting and assembling such a cable, the tubular sheath is formed at the worksite from at least one sheet-steel strip in a shaping and seaming station and progressed along already tensioned tension elements, then sealed against anchorings for the cable, and filled with the mortar under pressure.
Abstract:
One sheet section edge is bent to form two edge portions making a U shape with the sheet. The second sheet section has the adjacent edge bent to form two portions which lie adjacent the two edge portions of the first sheet section, a third portion formed by a 180.degree. bend and an additional bend to engage the inside of the U.