Body chassis of 100% low-floor tram

Abstract

The invention relates to a body chassis of a 100% low-floor tram. Two parts, namely the front chassis part and the rear chassis part are installed and welded to form the body chassis, wherein the front chassis part is connected with a driver's cab, and the rear chassis part is located above a bogie wheel-set area. The front chassis part comprises a front-end beam, front-side beams on the two sides, and a main cross beam, and at least two front girders are arranged between the front-end beam and the main cross beam; the rear chassis part comprises a rear-end beam, rear-side beams, two rear girders and two groups of bogie cover plates, and the two ends of each rear girder are fixedly welded to the rear end beam and the main cross beam respectively. The front chassis part and the rear chassispart are both made of stainless steel, the bogie cover plates are formed in the mode that stainless steel plates are bent, and a hinged installation base is welded to the rear-end beam. The body chassis has the advantages of being low in weight and good in strength and rigidity, the force transfer property is good, when modular design is adopted by the portion, on the bogie area, of the rear chassis part, structural interchange between the portion and the corresponding area of an intermediate car can be achieved, and the maintenance universality is improved.

Description

technical field [0001] The invention belongs to the technical field of rail transit, and in particular relates to a 100% low-floor tram car body underframe. Background technique [0002] 100% low-floor tram is one of the important tools of modern urban rail transit. It is popular among cities for its convenience for passengers, diverse marshalling, flexible operation, and sharing of existing bus stops and road resources. [0003] The underframe is one of the important parts of a 100% low-floor car body. For the car body underframe on the bogie, it bears the weight of the car body and needs to transmit the traction force from the bogie to the car body. Therefore, the car body is required Body chassis has a certain strength and rigidity, and requires better force transmission performance. [0004] At present, the underframe of the low-floor car body is mainly designed with an all-carbon steel structure or an all-aluminum alloy profile structure. The all-carbon steel car body...

AI Technical Summary

Problems solved by technology

The strength and rigidity of the all-carbon steel car body chassis are good, but the weight is too large; the weight of the aluminum alloy profile car body chassis is light, but the rigidity is low. In order to increase the bending stiffness and prevent the plate from being unstable, the plate must be enlarged. thick

In addition, the corrosion resistance of aluminum alloy materials is poor, and anti-corrosion protection is required.

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