Nippon Steel Sumitomo Metal Corporation

Nippon Steel Corporation

Tomoki Teramae

Masaaki Mizuno

Yoshiyuki Shimokawa

Toshiyo Yamano

To prevent separation of a truck frame and a wheel axle and to continue supporting a vehicle, even if damage has occurred to a steering device of a steering truck in which front-back support of a steering axle is performed only by a steering mechanism. A railway vehicle steering truck provided with an axle box suspension of a steering axle, which is designed to perform support in the front-back direction of an axle box which rotatably supports the steering axle, by means of a steering device having a steering link which is rotatably connected to the axle box, and a connecting link rotatably connected to a bolster, each of these being rotatably connected to a steering lever which is rotatably connected to the a truck frame. A stopper to which the axle box comes in contact is installed both on a side where a wheelbase expands and on a side where the wheelbase contracts in the truck frame, when a front-back movement of the axle box exceeds a range of front-back movement at a time of maximum steering when the front-back movement of the axle box passes through a minimum curve.

Railway vehicle steering truck

In the event that a steering device is damaged, the damaged component is prevented from dropping onto a surface of a track or prevented from making contact with a surface of a track, even if a component to prevent dropping is not newly installed. A railway vehicle steering truck having a steering device with a steering link which is rotatably connected to an axle box which supports a steering axle, and a connecting link rotatably connected to a bolster, and these are each rotatably connected to a steering lever which is rotatably connected to a truck frame. A length A1 or A2 from one center of rotation of the steering link is shorter than a radius B of a wheel that has reached a wear limit.

Growing community of inventors

Osaka, Japan

Tomoki Teramae