Investigation of SkyCabs Monorail System in Urban Regions

The increased popularity of the private vehicle and the low budgets available to public-transport (PT) planners have meant that PT patronage has decreased significantly from what it once was. This has led to congestion and pollution problems in many cities around the world. It is thus apparent that a new, high quality and sustainable PT system is needed to open the opportunity to attract more people to use PT. This work describes such a system called SkyCabs. The SkyCabs concept is comprised of many lightweight, driverless cabs running two ways on a single elevated monobeam. With each cab seating up to eight people, the aim is to create a feeling of personal travel, and by doing so increase the level of patronage on PT services. The SkyCabs system is investigated based on the following three criteria: a comparative analysis which involves researching and comparing system characteristics, a computer simulation analysing operational feasibility and an economic analysis which involves calculating and comparing the benefit-cost ratios for each mode analysed. A background section has been included to provide information on existing PT modes which have been compared to SkyCabs throughout this work. The SkyCabs concept has been deemed feasible within an urban context such as the North Shore of Auckland, New Zealand. This finding is based on a comparison with other options investigated and it is due to SkyCabs favourable characteristics, the high level of service offered and the low cost of implementation relative to return benefits.

Investigation of SkyCabs Monorail System in Urban Regions

The increased popularity of the private vehicle and the low budgets available to public-transport (PT) planners has meant that PT patronage has decreased significantly from what it once was. This has led to congestion and pollution problems in many cities around the world. It is thus apparent that new, high quality and sustainable PT system is needed to open the opportunity to attract more people to use PT. This work describes such a system called SkyCabs. The SkyCabs concept is comprised of many, lightweight, driverless cabs running two ways on a single elevated monobeam. With each cab seating up to eight people, the aim is to create a feeling of personal travel, and in doing so increase the level of patronage on PT services. The SkyCabs system is investigated based on the following three criteria;a comparative analysis which involves researching and comparing system characteristics, a computer simulation analysing operational feasibility and an economic analysis which involves calculating and comparing the benefit-cost ratios for each mode analysed. A background section has been included to provide information on existing PT modes which have been compared to SkyCabs throughout this work. The SkyCabs concept has been deemed feasible within an urban context such as the North Shore of Auckland, New Zealand. This finding is based on a comparison with other options investigated and it is due to SkyCabs favourable characteristics, the high level of service offered and the low cost of implementation relative to return benefits.

Design and dynamic analysis of the micro-suspended monorail

A 20 degree of the freedom model of the micro-suspended monorail is established to analyze a new type of the vehicle system named micro-suspended monorail.The formula of the tire is established by using the magic formula.Through the modal analysis of the vehicle,the modes of the vehicle are obtained,and resonance has little effect on the vehicle.When the vehicle moves in a right turn curve,it yaws in the clockwise direction.Under the action of the guidewheel(stable wheel)force,the front bogie yaws clockwise but the rear one yaws counterclockwise.Moreover,the two bogies and the car body roll during the curve passing process of the vehicle.When the vehicle speed is high enough,the left drive wheel will derail and the anti-overturning moments are provided by the stable wheels.Then,the car body yaws in the counterclockwise direction when it moves out of the curve.In the simulation of the vehicle passing the curve,the clearance between the guide wheel and rail surface will lead to a fatal impact on the bogie.At the same time,the dynamic response of the vehicle under the crosswind is tested.The vehicle will not overturn due to the crosswind.Finally,the collision of adjacent vehicles is analyzed.The results show that there is an intermittent collision force between two vehicles due to the vehicle's non synchronous pitch motion.

Dynamic Performance of Straddle Monorail Curved Girder Bridge

In this work,a monorail vehicle-bridge coupling(VBC)model capable of accurately considering curve alignment and superelevation is established based on curvilinear moving coordinate system,to study the VBC vibration of straddlemonorail curved girder bridge and the relevant factors influencing VBC.While taking Chongqing Jiao Xin line as an example,the VBC program is compiled using Fortran,where the reliability of algorithm and program is verified by the results of Chongqing monorail test.Moreover,the effects of curve radius,vehicle speed,and track irregularity on the corresponding vehicle and bridge vibrations are compared and analyzed.It is observed that the test results of lateral vibration acceleration(LVA)and vertical vibration acceleration(VVA)of track beam,and LVA of vehicle,are consistent with the simulation results.Owing to the track irregularity,vibration of track beam and vehicle increases significantly.Besides,an increase in vehicle speed gradually increases the vibration of track beam and vehicle.For the curve radius(R)≤200 m,lateral and vertical vibrations of the track beam and vehicle decrease significantly with an increasing curve radius.Alternatively,when 200 m<R<600 m,the lateral vibration of the track beamand vehicle decreases slowly with an increasing curve radius,while the relevant vertical vibration remains stable.Similarly,when R≥600 m,the lateral and vertical vibrations of the track beam and vehicle tend to be stable.Accordingly,the results presented here can provide a strong reference for the design,construction,and safety assessment of existing bridges.

Vibration Behavior of the Ground and Houses Caused by Monorail Traffic

The vibration behavior of the ground and houses caused by monorail traffic is discussed in this paper. The environmental ground vibration problem discussed herein occurs in a residential area near a monorail used for public transportation, Vibrations were measured on the ground at the side of monorail piers lacing the residential area and within the affected houses. Results indicate that the vibration level in the house was 60 dB or more, a level high enough to warrant complaints, Peculiar geological and geographical features are thought to contribute to the amplification of low frequency （-10 Hz） ground vibrations to irritable levels in these homes even though a distance of≥30 m separates the residential area and the monorail.

Predictive Value of Resting Pd/Pa for Fractional Flow Reserve Assessed with Monorail Pressure Microcatheter in Real-World Practice

Background and Objectives:The aims of this study were(1)to examine the diagnostic accuracy of resting timeaveraged distal coronary pressure(Pd)to mean aortic pressure(Pa)ratio to predict hyperemic fractional flow reserve(FFR)and(2)to identify a resting Pd/Pa value that can preclude the need for hyperemic FFR assessed with use of a monorail pressure catheter.Methods:A total of 191 stenoses were assessed.After exclusions,157 FFR data sets from 103 patients were analyzed.Results:Resting Pd/Pa showed poor agreement with hyperemic FFR(r=0.619,P<0.001).The receiver operating characteristic curve for resting Pd/Pa with reference to hyperemic FFR of 0.80 or less showed an area under the curve of 0.800(95%confi dence interval 0.732– 0.868,P<0.001),with the greatest diagnostic accuracy of 74.5%for resting Pd/Pa of less than 0.85.Resting Pd/Pa of 0.96 or greater had a sensitivity of 100%and a negative predictive value of 100%,and resting Pd/Pa of 0.82 or less had a specifi city of 98.9%and a positive predictive value of 94.1%to predict abnormal FFR of 0.80 or less.These results were consistent regardless of the vessels studied,the location of lesions,and the severity of stenosis.Conclusions:Resting Pd/Pa showed poor agreement with hyperemic FFR assessed with use of a monorail pressure microcatheter.However,resting Pd/Pa of 0.96 or greater had excellent sensitivity and negative predictive value to predict normal hyperemic FFR,and resting Pd/Pa of 0.82 or less had excellent specifi city and positive predictive value to predict abnormal hyperemic FFR.

Study on the Style of Urban Development as a Center of Kitakyushu Monorail —About the User Actual Situation and the Demographic around the Station

The ageing of the population in Japan has become a problem. According to the research of different regions, where the ratio of the ageing population is above 25%, it is found that the Japanese society is gradually turned to hyper-aged society. The population along Kitakyushu monorail is also in such a situation. This study is based on the background, with excessive reliance on their own vehicles and public transport problems arising from the abolition of public transportation in Kitakyushu as the area of this study. Under the full consideration of people who can’t drive, the elderly who had to take buses as well as people who lack of transport ability where population decrease and the aging problem have been worsening, their surrounding environment should be further improved. In addition, it should be taken into consideration to increase the population in the walking distance around the stations.

跨座式单轨在旅游轨道交通中的适用性分析

随着社会经济的发展、生活水平的提高和生活观念的改变,人民对旅游的向往促进了我国旅游业蓬勃发展。为满足游客对旅游品质提出的更高要求,旅游与轨道相结合的出行方式应运而生。目前旅游轨道交通属于新兴且相对热门的事物,但并无相应的分类、设计、施工、验收标准,急需明确适合不同旅游资源的轨道交通制式,供建设单位选择和参考。通过对旅游景区分类、旅游景区对轨道交通需求、适合旅游的轨道交通制式分析,并重点对跨座式单轨系统在旅游轨道交通的适应性进行研究,得出跨座式单轨拥有的与环境融合的车辆外观、适合旅游客流特征的运输能力、灵活的车辆编组、轻盈的轨道梁桥结构形式、超强的地形适应能力、优异的环保性能,再加上满足投资人要求的工程建设成本,使其成为非常适合旅游轨道交通的一种系统制式。最后通过分析跨座式单轨作为旅游轨道交通与城市轨道交通的不同,提出跨座式单轨作为旅游轨道交通今后应在新型车辆研制、与旅游单轨运营需求匹配的设备配置、系统集成、旅游轨道交通技术标准制定等方面开展研究,为今后旅游跨座式单轨交通的推广和落地提供参考。

矿用井下气动单轨吊制动系统设计与应用研究

井下气动单轨吊设备是吊挂在巷道顶板轨道上的一种关键辅助运输设备,为提高其安全输送性能,分析了井下气动单轨吊结构及运行原理,对单轨吊制动系统进行设计,并对制动动作的关键机构进行模拟应用研究。测试结果可以看出,单轨吊制动平稳,行走、制动动作稳定可靠,满足设计要求。

矿井中单轨吊辅助运输系统驱动单元配置与实践研究

单轨吊作为矿井中人员、材料、设备的辅助运输设备,其具有安全可靠、爬坡能力强、不跑车掉道、不受底板影响等优势,使得单轨吊在煤矿辅助运输系统中有着较为广阔的应用前景。但我国对于单轨吊的研究时间较短,并且未根据矿井实际地质条件和巷道条件进行具体设计选择,难以保障单轨吊设计的应用价值。据此,以某煤矿为研究案例,结合煤矿地质和巷道条件,合理实施巷道断面锚固、单轨吊选择及吊箱以及单轨吊作业流程优化设计。通过SolidWorks+ANSYS联合仿真方式,确认优化后机架、夹紧装置等单轨吊辅助运输系统驱动单元关键结构件的受力情况,进而快速分析优化设计可行性。另外,将优化配置应用工程实践,确认单轨吊辅助运输系统驱动单元配置设计具有较强的社会效益和经济效益。

基于单轨构架的焊接过程参数采集管理系统设计

为对焊接参数进行实时在线监测、采集,提高数据传递效率和准确性,解决传统焊接过程监控不足、焊接过程工艺参数无法保留、缺乏信息化管控等问题,基于工业局域网、大数据、云平台设计构建了单轨构架焊接智能焊接群控系统,系统包含基础信息库、项目管理、生产、工艺管理、生产追溯、数据分析、数字驾驶舱等功能模块,能够对手动、自动焊机状态进行实时监控与网络化管理,实现了用户单轨构架产品焊接生产过程中手工焊机和自动焊机实时焊接数据和历史焊接数据查看和追溯,减少了材料损耗,降低生产成本,提高了焊接质量。

跨座式单轨制式轨道交通高空坠物风险防控

随着轨道交通多样性的快速发展,跨座式单轨系统因其造价低、建设快、建设门槛低等优点,在世界各地得到推广;因其沿公路架空建设,其空间占用较少,也宜与城市景观相结合,利于观光旅游。但其高架建设及单个轨道运行的方式,对车辆部件及轨道设备设施发生掉落时无法承接,掉落的部件直接威胁路面车辆及行人安全。

单轨构架焊接智控系统的构建

在使用大规模焊接设备生产现场中,由于焊接设备生产过程数据缺失、业务流程复杂、焊接过程缺乏信息化管控等原因,造成信息传递效率低且容易出现错误的现象,单轨构架焊接迫切需要加强其在生产管理环节信息化建设。设计并实现了一套焊接智控系统,系统通过网络实时采集不同焊接设备的运行数据,实现监控管理;利用参数自动匹配技术,根据操作人员偏好自动调整焊接参数,减少手动调整时间;通过数字化派工和报工流程,规范操作流程,提高效率;系统还支持视频监控和参数历史追溯,为质量控制和问题定位提供数据支持。试验表明,该系统可显著提升单轨构架焊接生产的信息化和智能化水平,具有广泛的推广应用价值。

轻型跨座式单轨供电系统方案研究

为降低轻型跨座式单轨供电系统建设成本,文章结合轻型跨座式单轨特点、线路条件,充分利用先进电力电子设备,尤其是兼顾整流和逆变功能的双向变流装置和低压成套逆变电源装置对供电系统进行设计,并以某旅游轻型跨座式单轨项目为例,分析供电系统功能及需求、优化外电源供电方案、中压网络接线方案、整流设备配置方案、牵引回流系统方案以及低压配电接线方案,提出适用轻型跨座式单轨的供电系统方案。通过与传统方案在技术、经济方面的比对,得出优化方案在满足供电系统运营要求的基础上,有效减少房间面积需求并降低供电系统投资成本及运营成本,为轻型跨座式单轨的推广应用创造有利条件。

“光谷光子号”悬挂式单轨列车开发

悬挂式单轨列车是城市轨道交通的重要组成部分,在我国具有较为广阔的应用前景。文章首先介绍了悬挂式单轨列车的发展,然后从总体方案、转向架系统、车体系统、电气系统、制动系统、网络系统几方面分析了“光谷光子号”悬挂式单轨列车技术方案,并在安全性、智能化、低碳环保等方面论述了其关键性能。“光谷光子号”悬挂式单轨列车各部件及整车均通过了相关的仿真测试、试验验证,现场应用情况表明,列车整体性能可满足行业应用需求。

面向单轨车辆构架的焊接智控系统研究

目前,单轨构架焊接的智能化建设仍处薄弱阶段。在使用大规模焊接设备生产现场中,由于焊接设备生产过程数据缺失、业务流程复杂、焊接过程缺乏信息化管控等原因,造成手工焊机焊接参数不能自动下发的问题,单轨构架焊接迫切需要加强其在生产管理环节信息化建设。介绍了基于工业局域网、大数据、云平台构建的单轨构架焊接智能焊接控制系统,对单轨构架焊接车间实现平台化与网络化管理,同时解决了手工焊机焊接参数不能自动下发的问题,实现了用户单轨构架产品焊接生产过程中手工焊机焊接工艺参数的自动下发控制,提升了设备互联互通能力,提高了焊接设备的自动化和智能化水平,有助于解决焊接质量和生产效率问题。

赵固二矿单轨吊车智能运输管理系统技术研究与应用

赵固二矿单轨吊车运输过程中存在调度与司机联系困难、调度无法掌握单轨吊车位置信息,以及单轨吊车拥堵、运输效率低、单轨吊车碰撞风门和无法对物料的装载、运输、卸车过程进行实时查询调度等难题。为解决赵固二矿单轨吊车集中运输中存在的难题,研究并实施了单轨吊车智能运输管理系统,通过UWB精确定位系统定位单轨吊车位置信息,建立网络通信系统解决调度-司机、司机-跟车工之间的通信问题,构建物料运输管理系统,实现物料从装到卸的全过程管理,极大地提高了运输效率和安全性,为推进煤矿井下辅助运输智能化提供了宝贵经验。

基于车体接地电流的故障列车精准识别方法

针对专用回流轨直流牵引供电系统发生正极与车体短路故障时,故障列车不能被精准识别的问题,首先给出了双边供电牵引系统等值模型,其次分析了故障列车和正常列车的车体接地电流特征差异,最后提出了一种基于车体接地电流的故障列车精准识别方法。所提方法采用列车的车体接地电流幅值和方向作为故障识别判据,当其幅值小于整定值时判断列车正常,当大于等于整定值时继而采用其方向进行判断,电流为正方向的列车被判为故障车,电流为反方向的列车被判为正常车。该方法原理简单,实现方便,实用性强,采用双重判据能有效避免误判,可靠性高。通过Matlab仿真和现场试验录波验证了方法的可行性和有效性。

芜湖跨座式单轨无人驾驶系统运营方案研究

跨座式单轨系统作为独特的轨道交通方式,在许多城市得到应用,无人驾驶系统作为避免人为操作失误的有效措施,将有效提高跨座式单轨系统的运营效率。全自动无人驾驶系统支持按照全自动无人驾驶系统(GoA4级)和有人值守的全自动驾驶系统(DTO)的运营。在运营筹备期需要对包括运营范围、系统功能分析、运行策划、运营及维修组织等进行分析并做出规定,对系统运营方案进行策划设计并符合国标要求。本文以芜湖轨道交通1号线、2号线一期工程为例进行研究,为运营单位的管理模式设计优化提供参考,并为轨道交通线路正式开通所需要形成合理的生产组织和组织流程做出研究方案,确保跨座式单轨全自动运行线路的安全运营。本文的研究有利于跨座式单轨无人驾驶系统的推广和发展。

13902综采工作面单轨吊运输技术应用研究

针对张双楼煤矿13902工作面巷道起伏大,底板隆起程度高,巷道曲折,运输距离远的情况。从设备操作、运输工艺应用效果3方面对单轨吊辅助运输系统的应用展开研究。结果表明,采用单轨吊运输后,各巷道可形成整套单轨吊网络系统,能够完成运输量较大的运输任务,实现了减人提效和无轨运输,减少了支架运输事故,节省了运输资源,降低了安全风险,为其他矿井应用单轨吊运输系统提供了借鉴和参考。