Study on Contact Rolling Fatigue of Rails : 1st Report, Development of High Speed Rail Testing Machine

概要

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The high speed rail testing machine was originally developed in the world to simulate the Shinkansen traffic condition in Japan, especially the contact rolling problems between rail and wheel in a laboratory. Its main features are as follows. This machine is of a unique type and principally consists of a circular rail and two wheels, which contact each other. Test piece : actual bent rail (for example, 12 m×2 pieces), parent metal and welds. Wheel : two actual wheels, easily changeable and hydraulically-operated, running in one direction. Radial load: applied by a simple mechanism with large loading capacity using centrifugal force and oil pressure, and easily variable. Thrust load: generated by vertical oscillation of rotor by oil pressure actuator. Driving system: a wheel driven by oil pressure motor. Brake: DC motor brake and oil pressure brake. Pitch of rail sleeper arrangement; 580 mm. Medium: air, fresh water and sea water, Conditions : the same as those of the Shinkansen.
一般社団法人日本機械学会の論文