刮板输送机钢珠离心式软启动装置研究

发布时间：2018-02-07 16:42

本文关键词： 刮板输送机软启动动力学温度热应力　出处：《西安科技大学》2016年硕士论文　论文类型：学位论文

【摘要】：刮板输送机不仅是煤矿综采工作面的关键设备,而且对于安全生产与提高生产效率具有重要意义。目前,刮板输送机软启动装置主要包括:液力耦合器、CST软启动装置等。但是,由于上述软启动装置结构复杂,造价较高,一般适用于大中型刮板输送机。因此,针对中小型刮板输送机设计了机械式软启动装置。本文主要研究内容如下:根据刮板输送机软启动及其特点分析其负载特性,引入了钢珠离心式软启动装置;完成了钢珠离心式软启动装置的总体结构设计,并建立其三维几何模型,利用Abaqus软件进行壳体和转子的强度分析;对钢珠离心式软启动装置进行了动力学分析,分别考虑了转速和钢珠填充量对钢珠离心式软启动装置传递扭矩的影响;推导出了钢珠离心式软启动装置运行过程中温度随时间的变化公式关系,运用COMSOL软件对钢珠离心式软启动装置壳体进行温度与热应力分析;分析了钢珠离心式软启动装置壳体温度与热应力受转速,摩擦系数,钢珠填充量的影响程度,并具体分析了较高的温度与热应力对钢珠离心式软启动装置壳体强度的影响。本研究对刮板输送机软启动的研究与发展具有一定的促进作用。
[Abstract]:Scraper conveyer is not only the key equipment of fully mechanized coal mining face, but also plays an important role in safe production and improving production efficiency. At present, the soft starting device of scraper conveyer mainly includes: hydraulic coupler CST soft starting device, etc. Because of the complex structure and high cost of the soft starting device mentioned above, it is generally suitable for the large and medium-sized scraper conveyors. The main contents of this paper are as follows: according to the soft start of scraper conveyor and its characteristics, the load characteristic is analyzed, and the centrifugal soft start device of steel ball is introduced. The overall structure design of the ball centrifugal soft start device is completed, and its 3D geometry model is established. The strength analysis of the shell and rotor is carried out by using Abaqus software, and the dynamics analysis of the steel ball centrifugal soft start device is carried out. The effects of rotating speed and ball filling on the transfer torque of the ball centrifugal soft start device are considered respectively, and the relationship between temperature and time during the operation of the ball centrifugal soft start device is deduced. The temperature and thermal stress of the shell of the ball centrifugal soft start device are analyzed by using COMSOL software, and the influence degree of the temperature and thermal stress on the shell temperature and thermal stress by rotating speed, friction coefficient and the amount of steel ball filling are analyzed. The influence of high temperature and thermal stress on the strength of shell of centrifugal soft start device of steel bead is analyzed in detail, and this study can promote the research and development of soft start of scraper conveyor to some extent.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TD528.3

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