U-shaped structure underframe

Abstract

The invention discloses a U-shaped structure underframe which comprises a middle U-shaped underframe body and end underframe bodies arranged at the two ends of the middle U-shaped underframe body. The middle U-shaped underframe body is formed by installing and welding a center cross beam assembly, cross beam assemblies A, cross beam assemblies B, a lower side beam and vertical end plates. Each end underframe body is formed by installing and welding a traction beam, a sleeper beam, an end beam, an auxiliary side beam, a small cross beam, a longitudinal beam and a floor. The middle U-shaped underframe body is connected with the corresponding end underframe bodies through the vertical end plates at the two ends. According to the U-shaped structure underframe, the length of the middle U-shaped underframe body is fully utilized, the requirements for loading and container allocating of various containers are met, the line gauge is utilized to the maximum extent, a train bottom bearing face is designed to the allowed minimum value, and the U-shaped structure underframe has great potential economic benefits.

Description

technical field [0001] The invention belongs to the technical field of railway wagons, in particular to a concave structure underframe mainly used for railway double-deck container transport vehicles. Background technique [0002] Railway double-layer container stacking transportation is an important technical means and method of modern logistics and container multimodal transport. With the development of social economy and more and more frequent domestic and foreign trade, how to improve the efficiency of container transportation equipment and effectively Cost reduction has become an important subject of research by those skilled in the art. my country's main type of double-deck container transport dedicated concave bottom flat car, mainly used for loading two 20ft or one 40ft container on the lower layer, and two 20ft or one 40ft-53ft container on the upper layer. Due to the limitation of the length and size of the concave bottom part of the existing flat car with concave...

AI Technical Summary

Problems solved by technology

Due to the limitation of the length and size of the concave bottom part of the existing flat car with concave bottom, the bottom of the vehicle cannot be loaded with containers of specifications above 40 ft, and the transportation efficiency is not high. In addition, the traction beam of the existing flat car with concave bottom adopts a special B-shaped steel beam, and the structure of the traction pillow is overlapped up and down The double-drawing beam and double-bolt beam structure is complicated to assemble. The lower side beam adopts the form of cold-formed B-shaped steel and cold-formed channel steel back cover. The frame manufacturing process is complex and heavy

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