摘 要
带式输送机是现代最主要的散状物料输送设备之一。滚筒是带式输送机的主要传部件，它的作用有两个：一是传递动力，二是改变输送带运行方向。带式输送机滚筒的设计质量，关系到整个输送机系统的性能、安全性和可靠性。目前，国内滚筒的设计一般采用近似公式，对于中小型滚筒已经能够满足工程需求，但对于大型滚筒这种设计方法其结果与工程实际有一定的差距，它的安全性和可靠性难以保障。由于缺乏精确的计算方法，如果盲目的增大安全系数，会使结构尺寸变大，重量增加，强度得不到显著的提高同时又增加了成本。
本文主要包括以下几方面内容：首先，对带式输送机滚筒结构的设计计算方法进行了分析研究，修正了有关计算公式，完善并统一了设计计算内容。其次，滚筒采用实体单元，为了提高运算速度和精度，采用映射网格划分方式；分析并确定滚筒载荷；结果后处理对滚筒的各个部件的应力和应变进行分析。
本文关于带式输送机滚筒的设计计算方法具有一定的实用价值和指导意义，可以大大提高滚筒的设计质量，缩短设计的周期。
关键词：带式输送机 传动滚筒 有限元
Abstract
Belt-conveyor system is the most important transport equipment which can carry bulkmaterial. Belt-conveyor Pulley is the key transmission part in Belt-conveyor system. It hastwo functions, one is transferring power, and another is altering the operation direction of thebelt. The design quality of Belt-conveyor Pulley connects with systems security and reliabilityof the whole conveyor. At present, in our country, the design of the pulley usually adopts theapproximate formula, however, pulley that be designed out with such method can not meet theneed of manufacture, its security and reliability are difficult to guarantee. While lacking thesuitable calculation method of strength and stiffness about the pulley, if we increase the safecoefficient without enough reasons, the pulley become bigger and heavier. However thereliability of the pulley can’t be increased.
The main content includes the following respects: Firstly, the paper discusses structuraldesign and calculation of the belt conveyor pulley. The related formulas are corrected and acomplete design and calculation method are provided. Secondly,in order to improving the precision, the mapping gridmethod is carved up. After disperse the load on the pulley surface, we added the points load on the pulley node. The design methods are very important to thedesigner, and can shorten the design cycle and improve working efficiency.
Key Words: Belt-conveyor Driving Pulley Finite Element Method
目 录
摘要 ………………………………………………………………………………(Ⅰ)
Abstract……………………………………………………………………………(Ⅱ)
第一章 绪论………………………………………………………………………(01)
1.1概述………………………………………………………………………(02)
1.2传动滚筒的研究目的和意义……………………………………………(03)
1.3国内外研究现状…………………………………………………………(04)
1.4本文研究的主要内容……………………………………………………(04)
第二章 带式输送机传动滚筒的结构……………………………………………(05)
2.1 结构与种类………………………………………………………………(07)
2.2 运行阻力…………………………………………………………………(10)
2.3 传动滚筒轴功率…………………………………………………………(10)
2.4 传动理论…………………………………………………………………(13)
2.5 传动滚筒的受力分析……………………………………………………(15)
第三章 传动滚筒的结构设计……………………………………………………(16)
3.1 滚筒失效形式与许用应力的确定………………………………………(18)
3.2 传动滚筒结构设计………………………………………………………(30)
第四章 传动滚筒有限元模型的建立与结果分析………………………………(31)
4.1 传动滚筒有限元模型的建立……………………………………………(35)
4.2 节点耦合与约束方程……………………………………………………(37)
4.3 载荷和约束………………………………………………………………(38)
4.4 求解和后处理……………………………………………………………(39)
4.5 结果分析…………………………………………………………………(41)
结论与建议 ………………………………………………………………………(42)
参考文献 …………………………………………………………………………(43)
致谢
