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公开(公告)号：US10988150B2
公开(公告)日：2021-04-27
申请号：US16063338
申请日：2016-11-24
摘要： A state monitoring device for use in a train set constituted by coupling cars each including a carbody and a pair of bogies arranged at both respective longitudinal direction end portions of the carbody and supporting the carbody includes: sensors provided at the respective bogies and configured to detect state information of devices provided at the bogies; wireless transmitters provided at the respective bogies and configured to wirelessly transmit sensor signals containing the detected state information; and at least one wireless receiver configured to receive the sensor signals wirelessly transmitted from the wireless transmitters.
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公开(公告)号：US10964131B2
公开(公告)日：2021-03-30
申请号：US15548798
申请日：2016-01-25
发明人： Masayuki Mitsue , Teruhisa Nakaoka , Tomohei Kobayashi , Katsuyuki Kawashima , Takehiro Nishimura , Yousuke Tsumura
摘要： A state monitoring device for a plate spring mounted on a railcar bogie is configured to monitor a state of the plate spring, the plate spring including fiber-reinforced resin containing electrically conductive reinforced fibers containing reinforced fibers extending in a longitudinal direction of the plate spring. The state monitoring device includes: an electrode pair provided at both width direction side end surfaces of the plate spring and sandwiching the plate spring, a width direction of the plate spring being perpendicular to the longitudinal direction of the plate spring and a thickness direction of the plate spring; and a measuring unit electrically connected to the electrode pair and configured to measure an electrical characteristic of the plate spring.
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公开(公告)号：US10730533B2
公开(公告)日：2020-08-04
申请号：US15772111
申请日：2016-10-20
发明人： Takehiro Nishimura , Yoshi Sato , Yukitaka Taga , Yousuke Tsumura , Keiichiro Kamura , Fumikazu Kounoike , Koichi Murata , Francois Olivier Uchida , Yuta Yoshimatsu
摘要： A railcar steering bogie includes: a bogie frame supporting a bolster such that the bolster is swingable relative to bogie frame about a vertical axis; two wheelsets; axle box suspensions including respective axle beams coupling corresponding axle boxes to bogie frame, the axle boxes accommodating respective bearings supporting corresponding axles; and a steering mechanism steering at least one of the two wheelsets in accordance with the bolster's swinging relative to the bogie frame. The steering mechanism includes: a steering lever configured to turn relative to the bogie frame about fulcrum axis; a coupling link coupling the bolster and steering lever and configured to operate in conjunction with the bolster's swinging relative to the bogie frame; and at least one steering link coupling steering lever and axle beam and configured to steer the corresponding wheelset by displacing corresponding axle box through the corresponding axle beam in conjunction with steering lever's turning.
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公开(公告)号：US10427696B2
公开(公告)日：2019-10-01
申请号：US14912717
申请日：2014-10-06
发明人： Takehiro Nishimura , Shunichi Nakao , Tomohei Kobayashi , Yousuke Tsumura , Mamoru Nishio , Daisuke Watanabe
摘要： A method of producing plate springs for a railcar bogie, the plate springs each extending in a car longitudinal direction and elastically supporting a cross beam while being supported by an axle box in the railcar bogie, the axle box accommodating a bearing for an axle, the method includes: a molding step of molding a mother plate made of fiber-reinforced resin, the mother plate including a layer made of continuous fibers oriented in a first direction when viewed from a normal direction of a main surface of the mother plate; a cut position determining step of determining positions of a plurality of parallel cut lines for cutting the mother plate along the first direction; and a cutting step of cutting the mother plate along the plurality of cut lines to take out the plate springs made of the fiber-reinforced resin.
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公开(公告)号：US09493174B2
公开(公告)日：2016-11-15
申请号：US14382300
申请日：2013-01-11
摘要： A railcar bogie includes a cross beam to support a carbody of a railcar, a pair of front and rear axles between which the cross beam is located and arranged, respectively, in front of and behind the cross beam in a railcar longitudinal direction and extending in a railcar width direction, bearings provided at both railcar width direction sides of the axles to rotatably support the axles, axle boxes to respectively accommodate the bearings, and a plate spring extending in the railcar longitudinal direction to support one of both railcar width direction end portions of the cross beam and including both longitudinal direction end portions supported by the axle boxes. The plate spring unit includes a plurality of plate springs to elastically deform in an upper-lower thickness direction. The plate springs are arranged in a line in a width direction perpendicular to the longitudinal direction and the thickness direction.
摘要翻译： 轨道车转向架包括横梁以支撑轨道车辆的车身，一对前轴和后轴，横梁之间分别布置在横梁的前后并且在轨道车纵向方向上延伸 设置在车轴宽度方向侧的轴承，以可旋转地支撑轴，轴箱以分别容纳轴承;以及板弹簧，其在轨道车辆纵向方向上延伸以支撑两个轨道车宽度方向端部中的一个 并且包括由轴箱支撑的两个纵向端部。 板簧单元包括多个板簧，以在上下厚度方向弹性变形。 板簧在与长度方向和厚度方向垂直的宽度方向上排成一列。
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公开(公告)号：US11307177B2
公开(公告)日：2022-04-19
申请号：US16467527
申请日：2017-03-14
IPC分类号： G01N29/44 , B61F1/08 , G01N29/04 , G01N29/265 , B61F5/30
摘要： An ultrasonic flaw detector for a composite material constituted by a plurality of materials which are different in physical properties from one another includes: a section specifier configured to specify first and second sections of an RF signal of a reflected wave of an ultrasonic wave with which the composite material is irradiated, a material reflected wave being possibly generated in the first section, an interface reflected wave being possibly generated in the second section; a material flaw determiner configured to determine whether or not a value of the RF signal exceeds a positive first threshold in the first section; and an interface flaw determiner configured to determine whether or not the value of the RF signal falls below a negative second threshold in the second section.
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公开(公告)号：US11299184B2
公开(公告)日：2022-04-12
申请号：US16610298
申请日：2017-05-01
发明人： Takehiro Nishimura , Yousuke Tsumura , Fumihide Inamura , Katsuyuki Kawashima , Ikko Hanaki , Yuhei Tanaka
摘要： A railcar bogie includes: a protection target member of the railcar bogie; and a protective film including an adhesive surface stuck to the protection target member. The protective film is configured such that an impact absorbing layer and a flame-retardant layer are laminated in this order from the protection target member side. The impact absorbing layer is thicker than the flame-retardant layer.
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公开(公告)号：US10967887B2
公开(公告)日：2021-04-06
申请号：US16080141
申请日：2017-01-17
摘要： Provided is a bearing monitoring device of a railcar, the railcar being constituted by coupling a plurality of cars including carbodies and bogies, the bearing monitoring device including: bearing temperature sensors provided at the respective bogies and configured to directly or indirectly detect temperatures of bearings of the bogies; at least one state sensor provided at at least one of the carbodies of the plurality of cars and configured to be used for calculating loads or rotating speeds of the bearings; and a storage unit provided at at least one of the carbodies of the plurality of cars and configured to store data pieces of signals detected by the bearing temperature sensors and the state sensor.
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公开(公告)号：US10800436B2
公开(公告)日：2020-10-13
申请号：US16063498
申请日：2016-12-05
发明人： Takehiro Nishimura , Yoshi Sato , Yukitaka Taga , Yousuke Tsumura , Keiichiro Kamura , Fumikazu Kounoike , Koichi Murata , Francois Olivier Uchida , Yuta Yoshimatsu
摘要： A railcar steering bogie includes: a bogie frame including a cross beam; pair of axles; axle boxes accommodating bearings; axle box suspensions each including a coupling member coupling the corresponding axle box and bogie frame while allowing relative displacement in a car longitudinal direction; plate spring extending in the car longitudinal direction and including car longitudinal direction end portions extending obliquely upward along the car longitudinal direction and supported above the respective axle boxes and a car longitudinal direction middle portion unfixedly arranged under the cross beam; support seats including respective inclined upper surfaces and supporting the both respective longitudinal direction end portions of the plate spring; and gap bodies each provided between an upper surface of the corresponding axle box suspension and a lower surface of the corresponding support seat and configured to allow displacement of the axle box suspension and the support seat in the car longitudinal direction.
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公开(公告)号：US10723371B2
公开(公告)日：2020-07-28
申请号：US15579451
申请日：2016-05-10
摘要： A plate spring unit applied to a railcar bogie includes: a lower plate spring including both longitudinal direction end portions supported by the respective axle boxes from below, the lower plate spring being made of fiber-reinforced resin; an upper plate spring arranged above the lower plate spring with a gap and including a middle portion pressed from above by a pressing member provided at the cross beam, the upper plate spring being made of fiber-reinforced resin; a middle spacer sandwiched between a middle portion of the lower plate spring and the middle portion of the upper plate spring; and an end spacer sandwiched between the end portion of the lower plate spring and an end portion of the upper plate spring and allowing relative displacement between the end portion of the lower plate spring and the end portion of the upper plate spring in a longitudinal direction.
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