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Article type: Cover
Pages
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Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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Article type: Index
Pages
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Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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Yoshio AOKI, Yuki KANTO, Emi KOBAYASHI
Article type: Article
Pages
1-4
Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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According to the present Bulding Standards Law, the structure of a restraint device is not defined in detailed standards corresponding to acceleration. Partly because of this, it was found from last fiscal year's research that only a few amusement facility enterprises either accurately know or have interest in acceleration data. In this research, standards on a restraint device will be reviewed by collecting scientific knowledge by means of actual measurement of data, interview of amusement facilities, etc. concerning the structure and combination of restraint devices corresponding to the acceleration and type of amusement facilities. Also, review will be made on conformity response to overseas standards to assess standards, and structure standards specifications corresponding to acceleration, while paying consideration to the background of law, culture and others that are unique to Japan.
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Shunsuke OKA, Takayoshi KAMADA, Kazuhiro TANAKA
Article type: Article
Pages
5-8
Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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In these days, high-rise building has been increasing. Therefore, it's demanded high speed and high capacity elevator. The speedup of elevator traction machine is required to speed up the elevator. And it is causing noise and vibration by transmitting the vibration from elevator traction machine to the beam of bulding. In past study, using active mass damper controlled vibration transmission from elevator traction machine base to beam of building. But it needs high running cost. The purpose of this study is controlling the vibration by changing structure of vibration isolator. This paper describes modeling of elevator traction machine base. Additionally, it was discussed that changing structure of vibration isolator affect vibration characteristic of the base.
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Yudai TANAKA, Satoshi FUJITA, Keisuke MINAGAWA
Article type: Article
Pages
9-12
Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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In Great East Japan Earthquake in 2011, escalator body fall accidents have occurred. In commercial facilities, four escalators have fallen. In general, escalators are set into building with either bottom or upper non-fixed style in order not to restrict the escalator deformation. In non-fixed side, escalator is supported by the L-form board and hanging to the beam of building. Therefore, it is thought that escalator came off from the beam of the building by layer deformation with more than expected. It is necessary to clarify the seismic behavior of the escalator to prevent such an accident. From the above-mentioned background, the purpose of this study is to develop the analytical model of the escalator for seismic response analysis. In this paper, the development of analytical model takes the impact with the beam of building and non-linear of the escalator truss into account. In addition, Seismic response analysis is conducted, with escalatoris installed in low-rise building.
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Takehito HATTORI, Yuji MOROOKA, Junichi NAKAGAWA, Shinji ARAI
Article type: Article
Pages
13-16
Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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Ropes of an elevator for a tower building can be excited forcibly by the sway of the building caused by wind forces or long-period ground motion. The protection measures, such as the vibration suppressor are required to take in the elevator shaft for protecting the rope from hitting or catching on the devices of elevator. In order to determine effect of the protection measure, and to verify strength of suppressor against collision with the rope, it is necessary to estimate the impact force and the behavior of the rope in collision. In this report, we improved a rope simulation model constructed by multi-degree of freedom to be able to simulate collision of a rope with a protective part.
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Takuya NAKAJIMA, Satoshi FUJITA, Keisuke MINAGAWA
Article type: Article
Pages
17-20
Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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In recent years, due to the increase of the height of the high-rise buildings, elevators become indispensable facilities. Consequently, during earthquakes, as natural periods of a building and an elevator system get close, the movement of the main ropes, the compensating ropes and control cables of an elevator system become important because there ropes lead to an accident. Moreover, when long-period ground motion occurs, the ropes may hit the wall of the shaft and cause damages to the equipment. In such case, the elevators emergently stop. However, during the time for the restoration of the elevators, the building's functions are unavailable. Therefore, to grasp the motion of the elevator's rope during an earthquake is important. Several manufactures have used this kind of analysis program in order to evaluate the response of their own elevator system, but comparisons between all these results are difficult. In this research, the aim is to develop the analysis program usable by each manufacture. This paper is carried out analysis with input wave which are earthquake waves and wind force wave.
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Hitoshi AOKI
Article type: Article
Pages
21-24
Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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Elevator systems of high-rise office buildings have been planned to provide adequate handling capacity enough to transport the morning up-peak traffic. However, according to the recent studies about the traffic of modern office buildings, it becomes clear that the two-way traffic of lunch time is often the most severe test of elevators. Because, it contains 45% incoming traffic, 45% outgoing traffic and 10% inter-floor traffic and it is not unusual for the incoming and outgoing traffic at lunch time to be of the same order of magnitude as the incoming traffic in the morning up-peak. Accordingly, elevator systems planned by present manner do not have enough handling capacity for the lunch time traffic. Because of the shortage of handling capacity at lunch time, conventional group control systems make many passengers left behind, and the average waiting time becomes unacceptably long. Elevator system comprised of a conventional group control system servng upward traffic and a conventional group control system serving downward traffic can improve the average waiting time. But, it is too expensive and is a waste of space and energy. Consequently, An elevator system of high-rise office building should be planned by utilizing the complex group control system. Moreover, It can be a platform of elevator system planning, because it can be optimal for requirements by adjusting the size of serving sectors. Furthermore, since it consists of jam-free elevators, it can be a safer alternative of an evacuation stair for the elderly and persons with disabilities.
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Naohiko SUZUKI
Article type: Article
Pages
25-28
Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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This paper proposes a new method of traffic calculation in a pattern of several floors. A conventional method is aimed to morning up-peak traffic, but is not effective in other traffic patterns, for example lunch time traffic pattern. In recent, flexible-work system gets so popular that other hours including lunch time is more congested than morning peak time. The proposed method makes a round trip time (RTT) equation including number of passengers per unit time. The equation describes a relation between number of riding passengers and average waiting time. If number of riding passenger in one way is over 80% of car capacity, a plan may be invalid. In addition, this paper mentions a method of traffic calculation in any OD (origin and destination) traffic pattern between several zones. It can describe complicated traffic, so is effective in hospital traffic pattern. We tested the proposed method by comparison with results of elevator group control simulation. Experimental results show that the method can evaluate a pattern of several riding floors in 60-100% passenger rate.
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Jin INOUE, Akihide SHIRATSUKI, Emiko SANO, Yoshimasa WATANABE, Hiroshi ...
Article type: Article
Pages
29-32
Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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In the current elevator, many sensors are put on the cage and the hoistway. In order to control the cage up-down motion, Some sensors are used for detecting reference positions within the hoistway. So we have a challenge to decrease the installation space for detecting various type of positions. We report eddy current type position sensor which can detect two types of the reference posiion by using real component and imaginary component of eddy current.
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Junya YASUTOMI, Shoichi NAGOSHI, Yuki KANTO, Yoshio AOKI, Akihisa TABA ...
Article type: Article
Pages
33-36
Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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With the increase in the number of elevator installation, it is important that the accuracy inspection and work efficiency are improved. In this study, in order to develop a remote maintenance inspection system of wire rope for structure, an inspection device was first mounted for evaluating structural integrity and an elevation mechanism (probe climber) was fabricated which was capable of even vertical automatic movements. This study considers the detection accuracy after configuring a sensor system of Giant Magnetic Resistance sensor-array which is more compact and accurate in detection than conventional products describes the evaluation results through experiments for identifying the locations of damage in conjunction with a drive control system of the automatic elevation device. We did experiments probe climber that elevates the wire rope with five concentrated damages to 50cm interval. As a result, it was able to identify the locations of damage and detect concentrated damages.
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Takayuki HAGIWARA, Atsushi ARAKAWA, Koichi MIYATA, Kan MIYOSHI, Yousuk ...
Article type: Article
Pages
37-40
Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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Long travel and ultra-high speed elevators which are installed in high-rise buildings over 500 meters may be equipped with the air pressure control system to reduce passengers' ear block. In a conventional technology, the controller changes air pressure in the car with a constant rate. However, the other proposed operations shift the rate of pressure change discontinuously to increase the pressure in the car step by step. In these cases, the quick response of the air pressure control becomes air issue. Therefore, we applied feed-forward control with consideration for the car deformation, which influenced the air pressure in the car, to improve the control performance. As a result of evaluation experiments, proposed controller reduced estimated errors (approximately 30% reduction compared with a conventional type).
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Chie NOMAGUCHI, Kyoichi IKEDA, Hideki TSUBOI, Kiyoshi KOBAYASHI, Koich ...
Article type: Article
Pages
41-44
Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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Many various tourists will come to the Tokyo Olympic and the Paralympics games in 2020. There is a pressing need to the universal design transportation systems including elevators in the metropolitan area. We developed the universal design elevator installed in a railway station. Assuming various users (the Physically challenged, stroller user, et al) and usages, the usability tests are conducted in association with the volunteers. As a result, we've gained a great deal of technical and artistic knowledge, concerning about the configurations and arrangements of the operating panel and the position of the handrail in an elevator car. This paper introduces the better accessibility in an elevator car.
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Akihiro YAMAMOTO, Takayuki KIKUCHI, Hideo TAKAHASHI, Shigeo NAKAGAKI
Article type: Article
Pages
45-48
Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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In escalator riding accidents, more than 90 percent of serious case in which the dispatch of ambulance is requested are the result of tripping or falling. Demand has therefore been growing for an effective measure to mitigate injury in the event of a rider falling, and in particular, to prevent critical injuries. Therefore, the escalator which adopted a softer material affixed to the edges of the steps was developed. Through evaluations of the probability of head injury occurrence classified by the head injury criterion (HIC) score, which is used as a safety standard for vehicles and playground equipment, we have confirmed that this safety measure incorporated into the escalator is effective in migitating injury.
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Article type: Appendix
Pages
App1-
Published: January 21, 2015
Released on J-STAGE: June 19, 2017
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