Car roof device and low floor tramcar

Abstract

The invention provides a car roof device and a low floor tramcar. The car roof device comprises a cambered surface sectional material, two planar sectional materials, two car roof edge beams and two car roof end beams, wherein the cross section of the cambered surface sectional material is arc in the width direction, each side edge of the cambered surface sectional material is connected with one side edge of one planar sectional material respectively, the cross sections of the planar sectional materials are trapezoid in the width directions, the other side edge of each planar sectional material is connected with one car roof edge beam, the cross sections of the car roof edge beams are in transversely-arranged T shapes, the side edge of the transverse overhanging portion of each car roof edge beam is connected with the side edge of one planar sectional material, one side face of each car roof end beam is connected with one end where the cambered surface sectional material, the two planar sectional materials and the two car roof edge beams form a whole, and the sectional materials and interiors of the beams are hollow. A car roof is modularized, the cambered surface sectional material is not suffered from direct bearing acting force and is not prone to deformation, rainwater can be easily drained, and the sectional materials and the beams are hollow. The hollow parts of the large sections of the planar sectional materials can be used for allowing cables to penetrate through, the overall weight of the car roof is lightened, the cables can be conveniently arranged, and the requirement for load bearing strength can be met.

Description

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AI Technical Summary

Benefits of technology

This patented design allows electricity storage devices like batteries or hydraulic systems (hybrids) to stay within their designed space without being affected due to water pressure caused by precipitation during heavy weather conditions. It also simplifies construction processes while maintains structural integrity when installed properly. Overall, this technology improves safety measures against damage that may occur if there were any leaks between components underground.

Problems solved by technology

This patents describes how modern high-ranges rails have been developed over time by developing new materials like carbon fiber composites instead of traditional steel plates. These materials allow better performance compared to older designs while also being lighter weight but still maintaining strength when they break down due to corrosion caused during use. Additionally, these technical features make it easier to install batteries and energy storage devices within the train itself rather than just outside its own space.

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