Nippon Steel Sumitomo Metal Corporation

The University of Tokyo

Hiroshi Obayashi

Masaaki Mizuno

Masuhisa Tanimoto

Jun Kurihara

Hiroyuki Sugiyama

Makoto Shimizu

Yoshiyuki Shimokawa

Yoshihiro Suda

Takuya Saito

Tomohiro Seki

Atsushi Iwamoto

Yasuhiro Sato

Hirotaka Mori

Ryo Matsui

Masahiko Aki

Koichi Ohtani

Yohei Michitsuji

Yoshifumi Komura

A method of precisely measuring the track twist of a track on which a vehicle for commercial operation is travelling using this vehicle is to be provided. The method includes measuring a condition of a track (R) on which a vehicle for commercial operation () is travelling using this vehicle (). The vehicle for commercial operation includes a bogie (). The bogie includes four wheels () and primary springs () provided to correspond to the four wheels () and support the corresponding wheels (), and is capable of measuring a wheel load of each of the four wheels (). The method includes the steps of: measuring the wheel load of each wheel () (S); calculating the displacement of each primary spring () based on the measured wheel load (S); and calculating the track twist (h) of the track (R) based on the calculated displacements of the primary springs () (S).

Method of measuring condition of track using vehicle for commercial operation and vehicle for commercial operation for measuring condition of track

A vehicle abnormality detecting apparatusincludes wheel load sensorsthat are attached to right and left rails R constituting a track to measure wheel loads of wheelsprovided in a vehicle; and a calculation unitthat is connected to the wheel load sensors. An index represented by wheel loads of a pair or more of right and left wheelsprovided in at least one of bogiesand defined according to a type of vehicle abnormality as an index for detecting the vehicle abnormality is previously stored in the calculation unit. The calculation unitcalculates a value of the stored index from the wheel loads measured by the wheel load sensorsand transmitted from the wheel load sensors, and detects the abnormality of a running vehicle based on the calculated value of the index.

Method and apparatus for detecting abnormality of vehicle

Growing community of inventors

Tokyo, Japan

Hiroshi Obayashi