Floating car body and assembly method for 100% low-floor tram

Abstract

The invention discloses a floating car body for a 100% low-floor tramcar and an assembling method of the floating car body. The floating car body comprises a car roof, a side wall, an end wall, a floor, a front underframe end and an upper articulated mounting base, which are riveted into one body; no bogie is arranged under the floating car body and two ends of the floating car body are connected with a motor car and a trailer by articulated devices; the front underframe end and the upper articulated mounting base are steel plate welding assemblies, and the car roof, the side wall, the end wall and the floor are formed by aluminum alloy sections or aluminum alloy panels through assembling and welding. According to the floating car body for the 100% low-floor tramcar, the entry height of a car door can be effectively reduced due to no limitation of the bogie, and besides, a bench seat can be longitudinally arranged, so that a space inside the car is large and the passenger capacity is effectively increased. The floating car body for the 100% low-floor tramcar has the remarkable advantages of simple structure, convenience in assembly, reliability in performance, good repairability and the like.

Description

technical field [0001] The patent of the present invention belongs to the technical field of tramcars, and specifically relates to a car body assembly method and an assembly method using riveting instead of welding. Background technique [0002] 100% low-floor tram is one of the important tools of modern urban rail transit. It is popular in cities for its convenience for passengers, diverse marshalling, flexible operation, and sharing of existing bus stops and road resources. As the load-bearing part of 100% low-floor vehicles, the tram body is the key component to achieve low-floor. Since the low-floor vehicles and trailers are equipped with bogies, the car body is limited by the bogies, and the entrance height of the door 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 a load-bearing part of a 100% low-floor vehicle. Since there is no bogie under it, the height of th...

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 grains grow rapidly, and even produce overheated structures, so that the welded materials The plasticity and impact toughness of the car are reduced, and the floating car body, as a load-bearing part of a 100% low-floor vehicle, must have good strength, plasticity and toughness

Since the welding of 100% low-floor tram floating 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, so the finished car body cannot be realized as a component Modularized transportation, the finished car body after welding 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 as a whole, the damaged part cannot be replaced arbitrarily, which increases the cost of vehicle operation and maintenance and causes unnecessary waste

[0003] 100% low-floor tram floating car body is usually made of weathering steel and stainless steel. Due to the generally high density of steel parts, the floating car body is heavy, which is not conducive to acceleration and deceleration during use and driving. caused a waste of energy

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