Central Japan Railway Company

Nippon Sharyo, Ltd.

Fuji Electric Co., Ltd.

Toshiba Infrastructure Systems & Solutions Corporation

Kei Sakanoue

Hirokazu Kato

Shigekazu Okada

Hiroki Shimoyama

Yoshinori Minami

Nobuhisa Takada

Yasushi Matsumoto

Hiroaki Otani

Tomoyuki Makino

Masayuki Ueno

Manato Mori

Tadashi Fujii

Hajime Ito

Tomotaka Nishijima

Kotaro Nakamura

Toshiyuki Uchida

Noriyuki Taniyama

Isao Naruse

Hiroaki Isogai

Kenichi Tanaka

Takehiro Ishigami

Toshihiro Suzuki

Masahito Adachi

Hironobu Sunami

Masashi Furuya

Toru Konokawa

Toshiki Kunii

Junichi Ishii

Toshie Kikuchi

A current collector monitoring system in one aspect of the present disclosure is provided with: a collected current measurement unit; a collected current state determination unit; an image acquisition unit; an event recognition unit; an event determination unit; and a determination result output unit. When a state of collected current corresponds to an abnormal state, the image acquisition unit acquires an image including, within an angle of view, a collector shoe provided to a current collector.

Current collector monitoring system

A railway vehicle having a plurality of electrical circuits is presented herein. The railway vehicle comprises an external power supply connection portion; a contactor of a normally closed type that opens and closes a common line connecting the plurality of electrical circuits to a ground, the contactor opening the common line by receiving supply of electric power through the external power supply connection portion and closing the common line when no current is applied; and an operation prohibition determining unit that determines whether supply of electric power to the plurality of electrical circuits is stopped and that prohibits the contactor from opening the common line when the supply of electric power is not stopped.

Railway vehicle

An electric vehicle control device includes: a plurality of motors capable of transmitting motive power to a wheel of an electric vehicle; an inverter that supplies electric power to drive the motors; and a controller that controls the inverter and compares, when the electric vehicle drives under a certain velocity condition, a q-axis voltage feedforward value VqFF and a q-axis voltage command value Vq* used for controlling driving of the motors, to detect an occurrence of miswire between the motors and the inverter when the following inequation is satisfied: VqFF&#x2265;1.5&#xb7;Vq*.

Electric vehicle control device

A controlling apparatus includes a storage unit for storing, for each sampling period, a combination of a primary frequency of connected induction motors and the amplitude of a voltage command value, and a gradient detection unit for calculating a value corresponding to an increase in the amplitude of the voltage command value divided by an increase in the primary frequency, and for outputting a failure signal upon determining, when a result of the division is less than a predetermined reference value, that the plurality of induction motors include at least one induction motor having a phase sequence that includes incorrect wiring with respect to the power converter.

Power system, power converter controlling apparatus, and electric vehicle having the power system

A folding table includes: a table body provided with a pair of hinge pins and a pair of lock pins, each of the pairs protruding oppositely in left-right direction; and a pair of left and right brackets having shaft holes in which the hinge pins are inserted and movable holes in which the lock pins are inserted. Spring members mounted in the movable holes press the lock pins. The table body is rotatably supported by the brackets affixed to a wall surface. The folding table has closing plates having through-holes respectively through which the hinge pins and the lock pins are penetrated. The closing plates are sandwiched between the table body and the brackets to close the movable holes.

Folding table

Disclosed is a truck lateral motion restricting device which can prevent a large impact from being applied to a stopper when the truck lateral motion restricting device is operated in the derailment. The device comprises a guard angle () which is provided along the inside of the rail () and a stopper () which projects downward from a more inward position than wheels () of the truck () and is in slidable contact with the inside surface () of the guard angle, wherein the stopper comprises a slidable contact portion (), which has a slidable contact surface slidable contact with the inside surface of the guard angle, and guide portions () which project at front and rear portions of the slidable contact portion and have a front end inclined in a direction separating from the inside surface of the guard angle and a base having a guide slope () provided continuously to the slidable contact surface.

Truck lateral motion restricting device

A bogie lateral movement-limiting system capable of effectively restricting the lateral movement of a derailed bogie. The system comprises derailment prevention guards () laid along the inside of paired left and right rails, and a lateral movement-limiting device () installed on the lower part of the bogie (). The device () has a stopper () projecting downward at a position between the wheels of the bogie and slidingly contacts with the inner surfaces of the derailment prevention guards () in case of a derailment of bogie.

Bogie lateral movement-limiting system

Growing community of inventors

Nagoya, Japan

Kei Sakanoue