Abstract:
A prefabricated column assembly includes a hollow tubular column having a longitudinal axis. A gusset plate assembly includes a plurality of gusset plates connected to the column and extending laterally outward from the column in planes generally parallel to the longitudinal axis of the column. A first pair of the gusset plates extends laterally outward from the column along a first axis and defines a space for receiving an end portion of a first beam for mounting the first beam on the first pair of gusset plates. A second pair of the gusset plates extends laterally outward from the column along a second axis that is nonparallel and non-coincident with the first axis. The second pair of gusset plates defines a space for receiving an end portion of a second beam for mounting the second beam on the second pair of gusset plates to provide a bi-axial joint connection.
Abstract:
Die Erfindung betrifft ein Verfahren zur Laserstrahlbearbeitung von monolithischen Strukturen (B) für wägetechnische Anwendungen, bei dem ein von außen auf die Struktur gerichteter Laserstrahl (L') zur materialabtragenden Bearbeitung auf eine Schar von Zielpunkten (P1, P2, ...) der Struktur (B) gelenkt wird. Das Verfahren umfasst die folgenden Schritte: Einführen eines Bearbeitungskopfes (K) in eine sich in Z-Richtung in die Struktur (B) ersteckenden Ausnehmung (A), Einleitung eines Laserstrahls (L') in den Bearbeitungskopf (K), Umlenkung des Laserstrahls (L') durch Umlenkmittel (U), so dass der umgelenkte Laserstrahl (L) einen Zielpunkt (P1, P2, ...) erreicht, wobei der Bearbeitungskopf (K) in Z-Richtung verfahren und/oder eine in Z-Richtung verlaufende Schwenkachse geschwenkt wird.
Abstract:
Provided is a wire rod for an I-type oil ring, which includes right and left rail portions and a web portion connecting the rail portions, which has an oil hole or a molten through hole formed in the web portion, and which has a circumscribing circle diameter of 10 mm or less in its transverse contour. The molten through hole has such a remolten portion formed on its exit side as encloses the exit of the molten through hole. The remolten portion exceeds such a molten portion in the transverse section along the center of the molten through hole as is formed in the molten through hole, and is formed to have 200 µm or less from the outer circumference of the molten through hole and 100 µm or less in the depth direction of the molten through hole.
Abstract:
The welded material manufacturing method is provided with: a process for preparing a welding jig, which is disposed so as to straddle a line extended from the abutment line of the abutting parts of two plates and supports an end tab from a position that intersects with said extension line, and in which a groove, which is disposed along the extension line and through which a first shoulder can pass, and an open section, which faces said groove, are formed; a process for disposing the plates to abut against each other; a process for disposing the welding jig on an end of the abutment line; a process for setting an end tab on the welding jig and positioning said end tab with respect to the plates; a process for disposing the first shoulder and a probe connected to the first shoulder in a position that is on the groove side of the extension line; a process for disposing a second shoulder in a position corresponding to the first shoulder and the probe; a process for connecting the second shoulder to the probe so as to interpose the end tab between the first shoulder and the second shoulder; and a process for executing the friction stir welding.
Abstract:
A flange joint for structural members is provided, wherein by avoiding stress concentration at a welded portion, the cross-sectional size can be determined based on the base material strength, and a structure can be reduced in weight and size. In a flange joint (20) for structural members, structural members are connected to each other in a state where an end face (21a), for example, of an H-shaped steel beam (21) is connected to a structural-member-connecting face (22a) of an end plate (22) by welding and a non-connection face (22b) of the end plate (22) is coupled to another structural member. The structural-member-connecting face (22a) of the end plate (22), to which the end face (21a) of the H-shaped steel beam (21) is connected, is provided with recessed grooves (23) along the shape of the welded portion of the end face (21a).
Abstract:
A method and related apparatus for precision deploy-attaching beam-mount structure (38) to the outside of an elongate column (32) at plural, defined attachment sites that are distributed and spaced along the length of the column (32). The method involves (a) preparing an elongate column (32) to act as a travel way for a carriage (62) which is designed to transport and deploy beam-mount structure (38), shifting such a carriage (62) progressively along the column (32) from defined attachment site to defined attachment site and at each site, deploy-attaching from the carriage (62) to the column (32) the carriage-carried beam-mount structure (38).