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为了提高普通铁路上列车的运行安全性,日本铁道综合技术研究所(RTRI)开发了一种新型转向架。这种新近开发的转向架配备了一个机构,可防止车轮轮压减少并可减小轮轨横向作用力。目前这种新型转向架正在三菱重工的三原试验中心进行运行试验,以确认其性能和耐久性,希望之后投入商业应用。车轮轮缘上爬造成脱轨是铁道车辆脱轨现象之一,这种现象在车轮作用于钢轨的横向力极度增加时可能出现,同时,车轮轮压(轮重),一个使车轮向下压向钢
In order to improve the operational safety of the train on the general railway, the Japan Railway Institute of Integrated Technology (RTRI) has developed a new type of bogie. This newly developed bogie is equipped with a mechanism that prevents wheel wheel pressure reduction and reduces wheel-rail lateral forces. The new bogie is currently running tests at the Mitsubishi Heavy Industries’ Mihara test center to confirm its performance and durability and hopefully put into commercial use. Derailment caused by the uprising of the wheel rim is one of the derailment phenomena of railway vehicles. This phenomenon may occur when the lateral force exerted by the wheel on the rail is extremely increased. Meanwhile, the wheel pressure (wheel weight)