An all-aluminum carriage floor longitudinal and horizontal beam connection structure

Abstract

A longitudinal and transverse beam connecting structure of an all-aluminum carriage floor, comprising a transverse beam, a longitudinal beam located below the transverse beam, a longitudinal beam connector located in the inner cavity of the longitudinal beam, and a transverse beam connector located between the longitudinal beam and the transverse beam, and the transverse beam connector includes a transverse plate, the No. 1 vertical board and the No. 2 vertical board respectively located on both sides of the beam, the tops of the No. 1 vertical board and the No. It is vertically connected to the middle of the transverse plate, and the end of the transverse plate is bolted to the longitudinal beam connector through the upper flange of the longitudinal beam. This design improves the bearing strength of the bottom plate.

Description

technical field [0001] The invention belongs to the technical field of automobile production and manufacturing, and in particular relates to an all-aluminum carriage floor vertical and horizontal beam connection structure, which is suitable for improving the bearing strength of the carriage floor. Background technique [0002] The car floor is mainly composed of longitudinal and transverse beams welded or riveted with each other. As the key components of the car floor, the longitudinal and transverse beams are usually made of extruded aluminum with a constant cross-section in the length direction to meet the lightweight requirements of the car. After a lot of welding or riveting, the strength is reduced and deformation is easy to occur, which reduces the bearing strength of the carriage floor. In order to ensure the bearing strength of the floor, the vertical cross-sectional area of ​​the aforementioned longitudinal beams and beams is increased, but the weight of the longitud...

AI Technical Summary

Problems solved by technology

[0002] The car floor is mainly composed of longitudinal and transverse beams welded or riveted with each other. As the key components of the car floor, the longitudinal and transverse beams are usually made of extruded aluminum with a constant cross-section in the length direction to meet the lightweight requirements of the car. After a lot of welding or riveting, the strength is reduced and deformation is easy to occur, which reduces the bearing strength of the carriage floor. In order to ensure the bearing strength of the floor, the vertical cross-sectional area of ​​the aforementioned longitudinal beams and beams is increased, but the weight of the longitudinal beams and beams is increased, which is not good. Meet the lightweight requirements of the carriage

[0003] Chinese patent: authorized public number CN202716945U, authorized public date 2013.02.06 utility model discloses a light-weight carriage, including a bottom plate, an upper part of the carriage, the bottom plate includes a frame, longitudinal beams arranged longitudinally on the frame, and horizontally arranged on the frame The crossbeam, the connecting plate between the longitudinal beam and the crossbeam, the two ends of the connecting plate are fixedly connected with the longitudinal beam and the crossbeam respectively by rivets. It is easy to produce gaps between them and loosen, and because of the large stress at the joints of longitudinal and beams, sudden changes in stress concentration are prone to occur at the rivets, which reduces the bearing strength of the bottom plate

Therefore, there is a problem that the bearing strength of the bottom plate is low

Images