1500Mpa-level anti-fatigue electric taxi torsion beam

Abstract

The invention discloses a 1500Mpa-level anti-fatigue electric taxi torsion beam, which is integrally of a semi-arc symmetrical structure and comprises a cross beam (1), longitudinal arms (2), reinforcing plates (3), a sleeve (4), a spring tray (5), a shock absorber support (6), end plates (7), wheel edge supports (8) and a bushing (9), wherein the longitudinal arms (2) are welded to the two ends of the cross beam (1) respectively, and the reinforcing plates (3) are arranged at the welding positions of the cross beam and the longitudinal arms (2); the top end of the longitudinal arm (2) is welded and fixed with the sleeve (4); the end plates (7) are connected to the outer sides of the longitudinal arms (2) through wheel edge supports (8); the spring tray (5) is welded on the inner side of the longitudinal arm (2); the shock absorber support (6) is welded between the longitudinal arm (2) and the spring tray (5); the torsion beam bushing (9) is arranged in the bushing (9); and the cross beam (1) is of a closed tubular beam stamping structure with the equal section perimeter.

Description

technical field [0001] The patent of the invention relates to the field of design and manufacture of passenger car torsion beams, belongs to the field of passenger car chassis parts, and specifically relates to a 1500Mpa anti-fatigue electric taxi torsion beam. Background technique [0002] Passenger car suspension is divided into independent suspension, non-independent suspension and semi-independent suspension. The torsion beam is a semi-independent suspension. It is a very common structure used in the rear suspension of Class A vehicles. Its advantages are The invention has the advantages of simple structure, favorable for increasing the volume of the trunk, low manufacturing cost and the like. For torsion beams of passenger cars, especially electric taxis, the load requirements are high, and the driving conditions in operation are complex and harsh, and the following problems usually exist: [0003] 1. Insufficient fatigue resistance; the main body of the torsion beam u...

AI Technical Summary

Problems solved by technology

[0003] 1. Insufficient fatigue resistance; the main body of the torsion beam usually includes a beam and two longitudinal arms, and the two longitudinal arms are respectively welded to the two ends of the beam. Under common torsional conditions, that is, reverse wheel jump conditions, Fatigue fractures are most likely to occur at the position where the beam body is close to the longitudinal arm, and where the lap weld of the beam and the longitudinal arm overlaps, which will seriously affect the safety of the vehicle, the anti-fatigue life of the torsion beam, and the subsequent maintenance costs are relatively high;

[0004] 2. The design of the torsion beam is heavier, resulting in an increase in the unsprung mass, which not only affects the stability and smoothness of the vehicle, but also increases the material cost of the torsion beam;

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