著者

Yasuki Nakakura Kosuke Hayakawa

出版者

The Japan Society of Mechanical Engineers

雑誌

The Proceedings of International Symposium on Seed-up and Service Technology for Railway and Maglev Systems : STECH (ISSN:24243167)

巻号頁・発行日

pp._356566-1_-_356566-4_, 2009-06-15 (Released:2017-06-19)

被引用文献数

3 3

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The Series N700 is the first Shinkansen rolling stock to employ a body inclining system, which allows speed increases on curves while maintaining riding comfort. For use in the Tokaido Shinkansen, such a system needs to be light-weight and possess a reliable means to provide high precision position data. Reliability is a crucial factor when considering that the Tokaido Shinkansen operates a maximum of 13 train-sets per hour. In order to meet these requirements, the Series N700 adopts a simple and light weight air-spring based body inclining mechanism, which combines the new automatic train control (ATC) technology capable of providing reliable high-precision position data, and control transmission technology that simultaneously transmits position data digitally to all the cars in a 16 car trainset.

著者

Masao WATANABE Takahiro SHIMIZU Ryo TAKAGI

出版者

The Japan Society of Mechanical Engineers

雑誌

The Proceedings of International Symposium on Seed-up and Service Technology for Railway and Maglev Systems : STECH (ISSN:24243167)

巻号頁・発行日

pp._3D23-1_-_3D23-8_, 2015-11-09 (Released:2017-06-19)

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Urban railway lines, upon which large conurbations crucially depend, suffer from chronic congestion and prolonged travel times during peak hours, and improvement of capacity and reduction in travel times are desperately needed. Also, competition with other modes of transport is ever intensifying. These necessitate the realization of a very high performance railway, called in this paper as "ultra-convenient rail transport" (UCRT), which can provide services that much better fit individual passengers' needs. Because needs of the passengers are very diverse, so should the services provided by UCRT. This naturally leads to the conclusion that ultra-high frequency operation is essential for UCRT. In this paper, the authors present the discussions on possible new technologies that can be used to realize UCRT, and the impact they may have on the attractiveness of the services provided by the new railway system. The techniques upon which the authors would discuss in this paper are: (1) moving block signalling systems, (2) on-board turnouts and (3) soft coupling. In the discussion, the pure moving block system (PMB) which stands inside the so-called 'brick wall' assumption and the relative moving block system (RMB) that breaks the 'brick wall' assumption are compared, and significant improvements in performance may be achieved when RMB is combined with on-board turnouts. These techniques contribute to further reduction of headways between trains, and thus contribute to the realization of UCRT.

著者

Ohara Masayuki Kohori Sadayuki Shinmura Hiroshi Tsuboi Junji

出版者

一般社団法人 日本機械学会

雑誌

The Proceedings of International Symposium on Seed-up and Service Technology for Railway and Maglev Systems : STECH

巻号頁・発行日

vol.2009, pp._354324-1_-_354324-5_, 2009

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On JR Central's conventional lines, approximately 190km of track are replaced annually as one aspect of the company's line maintenance. The replacement work uses rails having a length of 25 meters, which are called standard-length rails, and those having a length of 200m or 150m, which are known as long welded rails. The standard-length rails are transported by rail from the Nagoya Port Materials Center and the long welded rails from the Hamamatsu Rail Center. Previously, this rail transport was carried out using three electric locomotives (EF64, EF58), one diesel locomotive (DD51), and 41 flat cars (open railroad freight cars). However, over 30 years have passed since these vehicles had been manufactured and alternatives were needed because these vehicles have become obsolete, so a railway diesel car type rail transport car was newly developed. [photograph] Standard-length rail transport car & [photograph] long welded rail transport car Figure 1: Series Kiya 97 rail transport carIn developing a rail transport car, use requirements are considerably different from those for passenger vehicles, so the design was implemented so as to take into account factors such as loading conditions, impact of rails laid across cars, and the circumstances during rail unloading. This report will focus particularly on the newly developed bogie and the parts related to the new constant low speed function.