The invention discloses an aluminum
alloy semitrailer longitudinal beam
assembly, and is applied to the technical field of semitrailers. The aluminum
alloy semitrailer longitudinal beam comprises a longitudinal beam, wherein the longitudinal beam is made of aluminum
alloy materials, and is divided into an ab segment, a bc segment and a cd segment in the length direction of the longitudinal beam; the ab segment, the bc segment and the cd segment adopt an integrated molding structure through a molding technology of an
aluminum extrusion technology; the ab segment comprises an
upper wing plate and a web, and the section of the ab segment is T-shaped; the bc segment comprises an
upper wing plate, a web and a
lower wing plate, and the section of the bc segment is H-shaped; the cd segment comprises an
upper wing plate, a web and a
lower wing plate, and the section of the cd segment is H-shaped; and gooseneck reinforcing plates are respectively arranged on one sides of the
lower wing plates,and are connected with the web of the ab segment and the lower plate of the bc segment. Most current semitrailers are formed by the
welding of steel structural components, and have the problems of being high in
oil consumption, large in total semitrailer weight, poor in
corrosion resistance, low in ratio of remaining value, and the like. Through the adoption of the aluminum alloy semitrailer longitudinal beam disclosed by the invention, the weight reducing effect can be improved under the condition of meeting the load required by laws, and the
corrosion resistance, the
recovery value, the ratio of remaining value and the economic benefit can be enhanced, so that the aluminum alloy semitrailer longitudinal beam has an extensive application prospect.