公开(公告)号：US20200049752A1

公开(公告)日：2020-02-13

申请号：US16534305

申请日：2019-08-07

Applicant: Central Japan Railway Company ,  Koshin Seikosho, LTD.

Inventor： Yuichi Ahiko ,  Kotaro Nakamura ,  Kenichi Kitazawa ,  Hiroaki Shintani

IPC: G01R31/00

Abstract: Provided is an inspection device for contact strip that enables proper quality control of a collector head using a split-type contact strip. Disclosed is an inspection device for a collector head having an overhead contact line contact assembly that includes a contact strip, including electrically-conductive strip pieces aligned in a series and in a longitudinal direction, and springs elastically supporting the contact strip. The inspection device for a collector head includes a measurer of rigidity of the overhead contact line contact assembly in a thickness direction of the contact strip at multiple points on an axis parallel to the juxtaposition direction of the strip pieces; and a determiner of an abnormality in the collector head by comparison of measurement data of rigidity distribution at the multiple points based on measurement results from the measurer with reference data of rigidity distribution prepared beforehand.

公开(公告)号：US10525838B2

公开(公告)日：2020-01-07

申请号：US15623818

申请日：2017-06-15

Applicant: CENTRAL JAPAN RAILWAY COMPANY ,  Toshiba Infrastructure Systems & Solutions Corporation

Inventor： Kenji Sato ,  Masayuki Ueno ,  Takafumi Fukushima ,  Shigekazu Okada ,  Kotaro Oda ,  Hiroaki Otani ,  Yasuomi Maki ,  Kenichi Kikkawa ,  Tsunehito Fujita ,  Manato Mori

IPC: B60L50/51 ,  B60L1/00 ,  B60L3/00 ,  H02J4/00 ,  H02M7/219 ,  H02P27/06

Abstract: A power conversion system includes a transformer, a power conversion device for travel, a power conversion device for auxiliary power sources, and an electrical storage device. The power conversion device for auxiliary power sources includes a first AC to DC conversion unit, a power conversion unit for AC loads, and a power conversion unit for DC loads. The power conversion unit for AC loads converts DC power into AC power and supplies it to an AC load. The power conversion unit for DC loads converts DC power produced through conversion by the first AC to DC conversion unit into DC power and supplies it to a DC load. The electrical storage device is connected to power lines connecting DC power output terminals of the first AC to DC conversion unit and DC power input terminals of both the power conversion units for AC and DC loads. When power supplied from a tertiary winding of the transformer to the first AC to DC conversion unit is reduced, the electrical storage device discharges power corresponding to the power reduction.

公开(公告)号：US10516345B2

公开(公告)日：2019-12-24

申请号：US16090988

申请日：2017-03-31

Applicant: CENTRAL JAPAN RAILWAY COMPANY

Inventor： Ken Kunomura ,  Kenji Sato ,  Akihiro Koyanagi

IPC: H02M7/44 ,  H02M7/797 ,  B60L9/24 ,  H02M1/00 ,  B60L15/00 ,  H02M1/32 ,  H02P27/08

Abstract: A power conversion controller for electric train in one aspect of the present disclosure includes an active current command value generator, an overhead line voltage detector, an initial value calculator, an adjustment value calculator, an upper limit value setter, and an output limiter. The output limiter outputs a reactive current command adjustment value calculated by the adjustment value calculator as a reactive current command value when the reactive current command adjustment value is equal to or lower than an upper limit value set by the upper limit value setter, and outputs the upper limit value as the reactive current command value when the reactive current command adjustment value exceeds the upper limit value.

公开(公告)号：US20190276061A1

公开(公告)日：2019-09-12

申请号：US16295336

申请日：2019-03-07

Applicant: CENTRAL JAPAN RAILWAY COMPANY

Inventor： Katsuhisa Hanai ,  Kazuhiko Nishimura ,  Masashi Itoyama ,  Itsuki Yoshida

IPC: B61L25/02 ,  B61K9/12 ,  B61L13/00 ,  B61L15/00 ,  G01M17/10

Abstract: Provided is a constant monitoring system for a railway vehicle that is monitorable of a dimensional change of a railroad truck during running. The present disclosure is the constant monitoring system for the railway vehicle that includes a sensor and a calculator. The sensor detects passage therethrough of wheels included in the railroad truck of the railway vehicle. The calculator calculates an inter-axle distance between two axles of the railroad truck based on a detection result obtained from the sensor. The sensor includes two displacement sensors of non-contact type that detect the passage of the wheels from respective different locations.

公开(公告)号：US20190270464A1

公开(公告)日：2019-09-05

申请号：US16291544

申请日：2019-03-04

Applicant: Central Japan Railway Company

Inventor： Kazuhiko Nishimura ,  Shigemitsu Kita ,  Gakuji Kobayashi ,  Suetaka Ebina

IPC: B61L15/00

Abstract: Provided is a monitoring system that can find abnormality in a device that supports a vehicle body of a railway vehicle during running at an early stage. The monitoring system for the railway vehicle includes a detector and a determiner. The detector detects a pressure A1 of a first air spring, a pressure A2 of a second air spring, a pressure A3 of a third air spring, and a pressure A4 of a fourth air spring of the railway vehicle during running. The first, second, third, and fourth air springs are respectively disposed on right front, left front, right rear, and left rear sides in a running direction of the railway vehicle. The determiner determines abnormality from a relation between a magnitude of diagonal imbalance P obtained from a formula (1) or (2) below and a mileage or elapsed time of the railway vehicle. P=(A1−A2)−(A3−A4)  (1) P=(A3−A4)−(A1−A2)  (2)

公开(公告)号：US10343549B2

公开(公告)日：2019-07-09

申请号：US15322692

申请日：2015-07-01

Applicant: CENTRAL JAPAN RAILWAY COMPANY

Inventor： Kei Sakanoue ,  Masashi Furuya ,  Hirokazu Kato ,  Shigekazu Okada

IPC: B60L3/00 ,  B60L15/00

Abstract: 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.

公开(公告)号：US20190160951A1

公开(公告)日：2019-05-30

申请号：US16322294

申请日：2016-08-02

Applicant: CENTRAL JAPAN RAILWAY COMPANY

Inventor： Kei Sakanoue ,  Isao Naruse ,  Kotaro Nakamura ,  Masayuki Ueno ,  Noriyuki Taniyama ,  Shigekazu Okada

IPC: B60L3/12 ,  B60L5/18 ,  B60L15/00 ,  B60L13/00 ,  G01R31/00 ,  G01H1/00 ,  G06T7/00

Abstract: 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.

公开(公告)号：US10280272B2

公开(公告)日：2019-05-07

申请号：US14377303

申请日：2013-02-20

Applicant: TEIJIN LIMITED ,  CENTRAL JAPAN RAILWAY COMPANY

Inventor： Tatsuya Ekinaka ,  Takehiro Suga ,  Toshio Kita ,  Ryo Niimi ,  Yuta Toyoshima ,  Tetsuya Shichi ,  Daisuke Yoshioka ,  Makoto Yamashita ,  Sohei Okazaki ,  Yuji Kaneko

IPC: C08J7/04 ,  C23C26/00 ,  B05D3/02 ,  B05D3/14 ,  B05D3/04 ,  B05D3/06 ,  B05D7/00

Abstract: A laminate having excellent abrasion resistance to physical stimuli such as dust. The laminate comprises a base layer, a hard coat layer and a top coat layer comprising flaky metal oxide fine particles all of which are formed in this order. The flaky metal oxide fine particles are hardened by at least one method selected from the group consisting of ionizing material exposure, ionizing radiation exposure, infrared exposure, microwave exposure and high-temperature vapor exposure.

公开(公告)号：US20190054933A1

公开(公告)日：2019-02-21

申请号：US16079864

申请日：2017-02-24

Applicant: CENTRAL JAPAN RAILWAY COMPANY

Inventor： Toshikatsu TANASE ,  Tsukasa HOSOMI ,  Toru TATSUNO ,  Kota TERADA

IPC: B61F5/14 ,  B61F1/14

Abstract: A vehicle body inclination controller includes an air spring, an air reservoir, valve devices, an acquisition section, and a determination section. The determination section compares, with a predetermined threshold, at least one of a value of a ratio between supply control information of a supply valve and exhaust control information of an exhaust valve in the same valve device among the valve devices, a value of a ratio between pieces of the supply control information of the supply valves of different valve devices among the valve devices, or a value of a ratio between pieces of the exhaust control information of the exhaust valves of different valve devices among the valve devices, and determines that a failure occurs in the same valve device or at least one of the different valve devices when the value of the ratio exceeds the predetermined threshold.

公开(公告)号：US20180312064A1

公开(公告)日：2018-11-01

申请号：US15771673

申请日：2016-11-01

Applicant: CENTRAL JAPAN RAILWAY COMPANY

Inventor： Yuichi AHIKO ,  Kotaro NAKAMURA ,  Hiroki SHIMOYAMA

IPC: B60L5/38 ,  B60L3/00 ,  G01M17/08

CPC classification number: B60L5/38 ,  B60L3/00 ,  B60L3/12 ,  B60L2200/26 ,  G05B23/024

Abstract: A collected-current monitoring device includes a current-value obtaining unit for obtaining current values I1 and I2; a first RMS-calculation unit for calculating a root mean square (RMS) 1 of the current value I1 at a window width W; a second RMS-calculation unit for calculating a root mean square (RMS) 2 of the current value I2 at the window width W; a determining unit for determining whether a combination of the RMS 1 and the RMS 2 satisfies an abnormality condition; an abnormality-signal output unit for outputting an abnormality signal when the abnormality condition is satisfied; an information-obtaining unit for obtaining railway vehicle information; and a setting unit for setting a set-parameter that includes at least one of the window width W or the abnormality condition depending on the railway vehicle information.