| 摘要 |
The invention concerns a track with several bands (3) running parallel to the direction of travel and connected to each other in the transverse direction by a multiplicity of steel strips (1). The steels strips (1) are U-shaped in crosssection and have a U-piece (4) consisting of two sides (5,6) joined by a connecting piece (7) between them. The first side (5) extends round a bend (9) into a connecting arm (10) leading inwards and then round second bend (11) to a track blade (12) which is approximately parallel to the sides (5, 6) of the U-piece (4). The steel strip is designed to be both stronger and cheaper to manufacture. This is achieved by virtue of the fact that the second side (6) of the U-piece (4) is welded to the end of the first connecting arm (10) via an inwards-bent second connecting arm (14) to form, in the interior of the U-piece (4), a cavity (21) similar io a house in cross-section.
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