Floating car body of low-floor tramcar

Abstract

The invention discloses a floating car body of a low-floor tramcar. The floating car body comprises a trolley body of a cuboid structure. The vehicle body is composed of a vehicle roof, two side walls, a bottom frame and two end walls. The car roof is located over the bottom frame, the two side walls are symmetrically arranged on the left sides and the right sides of the car roof and the bottom frame, the upper ends and the lower ends of the side walls are connected with the side edges of the car roof and the bottom frame respectively, the two end walls are symmetrically arranged at the frontends and the rear ends of the car roof and the bottom frame, and the car roof, the side walls, the bottom frame and the end walls are riveted through rivets. An observation window is formed in the middle of the side wall, and two door frames are formed on the side wall and located on the left side and the right side of the observation window; and a vehicle body channel is arranged in the middle ofthe end wall. The floating car body of the low-floor tramcar is assembled by adopting a riveting structure, so that various equipment installation requirements of the car body are met, the stable operation of the car is ensured, various load requirements generated during the operation of the car can be met, the axle load of the car body is met, the cost is low, the structure is simple, and the manufacturing is convenient.

Description

technical field [0001] The invention relates to the field of low-floor trams, in particular to a floating car body of a low-floor tram. Background technique [0002] Low-floor trams are one of the important tools of modern urban rail transit. They are popular among cities for their convenience, diverse marshalling, flexible operation, and sharing of existing bus stops and road resources. Low-floor trams float As the load-bearing component of low-floor vehicles, the vehicle body is a key component to achieve low-floor vehicles. Since the low-floor vehicles and trailers are equipped with bogies, the car body is limited by the bogies, and the entry height of the doors cannot be effectively reduced, thereby affecting the space in the car and limiting the passenger capacity, while the low-floor tram floats The car body is an important load-bearing part of a low-floor vehicle. Since there is no bogie underneath it, the height of the door entrance can be reduced to the maximum ext...

AI Technical Summary

Problems solved by technology

Welding not only pollutes the environment, but also has a welded heat-affected zone in the car body after welding. The overheated zone has a harmful effect on the welded joint. This zone is affected by high temperature, and the grain size increases sharply, and even produces overheated tissue, so that the welded material The shape and impact toughness of the vehicle are reduced, and the floating car body, as an important load-bearing part of the low-floor vehicle, must have good strength, shape and toughness

Since the welding of the low-floor tram car body requires a specific environment and process, on the premise that the remote factory does not have welding and painting, it must be welded at the production site to form a finished product. Therefore, the finished car body cannot be transported in modularized parts. The final finished car body is bulky and inconvenient to transport, which increases the investment in basic equipment

When a part of the car body is damaged, since the car body is welded and formed as a whole, the damaged part cannot be replaced arbitrarily, which increases the cost of vehicle operation and maintenance and causes unnecessary waste

[0003] The materials used for the floating car body of low-floor trams are usually weather-resistant steel and stainless steel. Due to the high density of the steel parts, the body of the floating car is heavy and cannot meet the requirements of light weight of the car body. Slowing down takes too long, resulting in wasted energy and increased operational insecurity

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