The invention discloses a roof edge beam of a low-floor tramcar. The roof edge beam comprises a boundary beam base body, and the edge beam base body is formed by combining hollow structure aluminum profiles formed through one-time extrusion. The cross section of the edge beam base body is of a hollow truss structure, the hollow truss structure is composed of a vertical hollow truss structure and atransverse hollow truss structure, and the transverse hollow truss structure is integrally connected to one side of the vertical hollow truss structure and forms a V shape with the vertical hollow truss structure. In this way, the hollow structure aluminum profile formed by one-step extrusion is adopted, a large amount of assembling, splicing and welding work is omitted, the overall structural strength of the edge beam base body is enhanced through the truss structure arranged in the aluminum profile, particularly, the cross section of the combined edge beam base body is of a V-shaped hollowtruss structure, transmission of longitudinal force and transverse force of the edge beam base body can be ensured, the structural strength and the bearing capacity of the edge beam base body are effectively improved, and the v meets the requirements for high strength and light weight at the same time.
本发明公开了一种低地板有轨电车车顶边梁,包括:边梁基体,所述边梁基体由一次挤压成型的中空结构铝型材组合而成,所述边梁基体的横截面呈中空桁架结构,所述中空桁架结构由垂向中空桁架结构与横向中空桁架结构组成,所述横向中空桁架结构一体连接在所述垂向中空桁架结构的一侧并相互构成√型。通过上述方式,本发明采用一次挤压成型的中空结构铝型材,省去了大量的组装、拼搭焊接工作,通过铝型材内置的桁架结构增强边梁基体整体结构强度,尤其是经组合后边梁基体横断面呈√型中空桁架结构,能够确保边梁基体纵向力及横向力的传递,有效提高其结构强度及承载能力,使边梁基体同时实现了高强度及轻量化要求。
Roof edge beam of low-floor tramcar
一种低地板有轨电车车顶边梁
2020-06-02
Patent
Electronic Resource
Chinese
IPC: | B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES |
Low-floor tramcar roof and side wall connection structure
European Patent Office | 2015
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