Assembled semi-trailer frame, semi-trailer and assembling method thereof

Abstract

The invention provides an assembled semi-trailer frame, a semi-trailer and an assembling method thereof. The assembled semi-trailer frame comprises two longitudinal beams, a front cross beam, a rear cross beam and a floor, wherein the two longitudinal beams are longitudinally arranged in parallel; the front cross beam and the rear cross beam are respectively clamped at the front and rear ends of the floor; the floor and the two longitudinal beams are fixedly connected in an assembled way; and the front cross beam and the rear cross beam are respectively fixedly connected with the two longitudinal beams in an assembled way. As the front cross beam and the rear cross beam are respectively clamped at the front and rear ends of the floor, the floor and the two longitudinal beams are fixedly connected in an assembled way, and the front cross beam and the rear cross beam are respectively fixedly connected with the two longitudinal beams in an assembled way, the welding workload is greatly reduced and quality defect caused by welding is avoided. Through adoption of assembled connection and fixation between the parts, the quality defect caused by welding is completely avoided and a problem of high labor cost is also solved; therefore, the semi-trailer frame quality is improved, the post-treatment work of quality defect is reduced and the labor cost is also reduced.

Description

technical field [0001] The invention belongs to the technical field of semi-trailers, and in particular relates to an assembled semi-trailer frame, a semi-trailer with the semi-trailer frame, and a method for assembling the semi-trailer. Background technique [0002] At present, the flat-bed semi-trailer frame includes two longitudinal beams arranged parallel to the longitudinal beams, two side beams parallel to the longitudinal beams, a front end beam transversely welded on the front ends of the two longitudinal beams and the two side beams, and a transverse welded joint on the front ends of the two longitudinal beams and the two side beams. The rear end beam at the rear end, a plurality of through beams located between the front end beam and the rear end beam and welded to the two longitudinal beams at transverse intervals, and the panel. The longitudinal beams are mostly welded "I"-shaped structures, and there are beam holes on the longitudinal beams. The through beams ar...

AI Technical Summary

Problems solved by technology

[0003] At present, the frame material of flat-bed semi-trailer mainly adopts Q345 or Q235 low-carbon steel, and the parts are fixed together by welding, so that the welding volume is large, the labor intensity is high, and the work efficiency is low; and welding deformation, virtual welding, leakage Welding defects such as welding and spatter are difficult to control, and the post-processing of welding defects consumes more man-hours, resulting in a corresponding increase in manufacturing costs and labor costs; and the relatively heavy weight of the steel semi-trailer will undoubtedly increase the cost of use; In addition, steel and welding The surface of the road is prone to rust and corrosion, which greatly reduces the overall service life of the semi-trailer

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