脱挂索道线路结构布置优化设计

发布时间：2018-02-03 23:16

本文关键词： 脱挂索道离散法动力学模型振动分析速度曲线　出处：《重庆大学》2014年硕士论文　论文类型：学位论文

【摘要】：脱挂抱索器客运索道相较于传统固定抱索器索道具有站外速度快站内速度低，单个吊厢质量较大等特点，因此针对固定抱索器索道的线路布置方案并不适用于脱挂抱索器客运索道系统。因此我们必须设计出合理的方案来对脱挂抱索器客运索道系统进行线路优化布置。本论文以北京起重运输机械设计研究院设计开发的山西浑源县恒山索道为研究对象，针对站外线路布置问题，运用离散法建立了多集中载荷悬索系统的振动模型，求解了吊厢处于单跨不同位置时的一阶固有振动频率，找出了不同因素对其一阶频率的影响；针对站内加减速线路布置问题，，建立了吊厢加减速运动的动力学模型，并对加减速过程的摆动情况进行仿真分析，优化设计出了5m/s及6m/s工况下的进出站加减速装置布置方案。论文主要研究工作有： ①采用离散法建立了单集中载荷及多集中载荷作用下悬索系统振动的动力学模型，得出了单集中载荷及多集中载荷两种情况下悬索系统一阶固有振动频率的变化曲线，并研究了索道张力、索道跨距、吊厢质量等因素对多集中载荷作用下悬索系统一阶固有振动频率的影响； ②建立索道跨距合理布置的优化设计方法，计算出了不同跨距下多集中载荷悬索系统一阶固有振动频率的最大值及最小值，并与多集中载荷悬索系统内部激励频率的最大值及最小值进行对比，找出跨距的合理布置范围； ③建立缆车进出站过程的动力学模型，设计出5m/s及6m/s工况下缆车进出站的速度曲线，并与匀加减速情况下的摆角大小进行对比分析，得出在S形加减速曲线下的吊厢摆角明显小于匀加减速下的摆角，并以此优化布置了脱挂索道站内加减速皮带轮的速度排布方案。
[Abstract]:Compared with the traditional fixed cable-hold cableway, the passenger ropeway with cable-holding device has the characteristics of low speed outside the station, high quality of single suspension box, and so on. Therefore, the route layout scheme for fixed cable-hold cableway is not suitable for the passenger ropeway system with cable holder. Therefore, we must design a reasonable scheme to optimize the layout of passenger ropeway system with cable holder. . This paper takes Hengshan cableway in Hunyuan County, Shanxi Province, which is designed and developed by Beijing lifting and Transportation Machinery Design Research Institute, as the research object, aiming at the layout of lines outside the station. The vibration model of multi-concentrated load suspension system is established by using the discrete method. The first order natural vibration frequency of the suspension box at different positions of single span is solved, and the influence of different factors on the first order frequency is found out. Aiming at the layout of acceleration and deceleration line in the station, the dynamic model of the acceleration and deceleration motion of the suspension box is established, and the swing of the acceleration and deceleration process is simulated and analyzed. The layout scheme of acceleration and deceleration device in and out of the station under the operating conditions of 5m / s and 6m / s is optimized and designed. The main research work of this paper is as follows: 1. The dynamic model of suspension system vibration under single concentrated load and multiple concentrated load is established by discrete method. The change curves of the first order natural vibration frequency of the suspension system under the condition of single concentrated load and multiple concentrated load are obtained, and the tension of the cableway and the span of the cableway are studied. The influence of the mass of the suspension box on the first order natural vibration frequency of the suspension system under the action of multiple concentrated loads; (2) the optimum design method for the rational arrangement of the span of the cableway is established, and the maximum and minimum values of the first order natural vibration frequency of the cable-suspension system with multiple concentrated loads under different spans are calculated. Compared with the maximum and minimum of the internal excitation frequency of the multi-concentrated load suspension system, the reasonable layout range of the span is found out. (3) establish the dynamic model of the process of the cable car entering and leaving station, design the speed curve of the cable car in the condition of 5m / s and 6m / s, and compare it with the swing angle of the cable car under the condition of uniform acceleration and deceleration. It is concluded that the swing angle of the suspension box under the S-shape acceleration and deceleration curve is obviously smaller than that under the uniform acceleration and deceleration, and the speed distribution scheme of the acceleration and deceleration belt pulley in the ropeway station is optimized.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U18

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