The invention discloses a small gooseneck type combined welded aluminum alloy longitudinal beam for a semitrailer. The small gooseneck type combined welded aluminum alloy longitudinal beam comprises a front upper beam, a middle neck beam and a rear lower beam, wherein the front upper beam is arranged as a double-web I-shaped beam and comprises a front upper wing plate, a front double-web plate and a front lower wing plate; the middle neck beam comprises at least two parallel like-right triangular web plates; the rear lower beam is arranged as an I-shaped beam and comprises a rear upper wing plate, a rear web plate and a rear lower wing plate; the right-angle sides I and II of the middle neck beam are respectively welded and fixed with the front end faces of the front lower wing plate and the rear lower beam; a gap matched with the front end of the rear lower beam is arranged at the tail end of the front upper beam; the front upper beam and the rear lower beam are welded and fixed through the matched gap. The aluminum alloy longitudinal beam for the semitrailer provided by the invention adopts a three-section type structure, so that the structural strength is enhanced, the manufacturing cost of the products is lowered and the driving safety is increased.
Small gooseneck type combined welded aluminum alloy longitudinal beam for semitrailer
2015-04-29
Patent
Electronic Resource
English
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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