Low speed magnetic floating system F rail seaming structure and processing method thereof

Abstract

The present invention discloses an F rail seam structure, which is designed by adopting the normal conducting electromagnetic levitation technology and provided by a low-speed magnetic levitation system for the levitation and guiding of vehicles. The F rail seam structure has the following characteristics: the end of a F rail is milled into an embedding surface, so that a convex splicing part is formed; the end of the convex splicing part is shaped like a circular arc (or planar); circular arc-shaped (or planar) end surfaces are formed on the convex splicing part and a step formed on the upper and the lower ends of the body of the F rail; and a concave part and a circular arc-shaped (or planar) end surface which match the circular arc-shaped (or planar) end surfaces on the convex splicing part and the step are formed on the end surface of the other end of the F rail. While still ensuring rail seam expansion adjustment, vertical and lateral positioning and the rail expansion adjustment of a turnout, the F rail seam structure is simplified and can be easily centered in the process of machining and installation. The F rail seam structure not only can ensure the centering adjustment of rails but also can adjust the temperature-difference expansion of the rails and realize the stretching adjustment of the turning of the turnout. The F rail seam structure is generally used in a passive guiding type low-speed magnetic levitation system.

Description

technical field [0001] The invention relates to an urban rail maglev system, in particular to a joint structure of an F-shaped ferromagnetic steel rail (hereinafter referred to as F rail) in a maglev traffic mode driven by a constant conduction electromagnetic levitation and a linear induction motor. The invention also relates to a processing method for the F-rail seam structure. Background technique [0002] The low-speed maglev transportation system designed using the conventional electromagnetic levitation technology adopts the vehicle-mounted levitation electromagnet to attract the track (F track), and uses the linear induction motor drive to achieve a running speed of up to 100km / h. There is a gap of 8.0mm between the suspension magnet of the maglev vehicle and the F rail (suspension state), and the guidance relies on the eccentric restoring force of the suspension magnet to return the vehicle body to its original position, which is called passive guidance. Such as fi...

AI Technical Summary

Problems solved by technology

[0006] Although these track joint structures can meet the basic requirements of low-speed maglev lines, in fact there are problems such as complex structure, difficulty in centering adjustment, and difficulty in maintaining the original positioning for a long time.

Too many additional accessories increase the accident factor of the joint structure, which is a hidden danger to the safe operation

On the other hand, it is an undeniable fact that these seam structures are difficult to machine

The resulting engineering investment will also increase

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