普通带式输送机的设计
摘要  本文在参考常规下运带式输送机设计方法的基础上，分析了常见驱动方式和制动方式用于长运距、大运量下运带式输送机上的优缺点，提出该运输机可采用的驱动和制动方式；分析了常见软起动装置及其选型方法，归纳总结出长运距、大运量变坡输送下运带式输送机设计中的关键问题和可靠驱动方案和制动方式优化组合的可行方案；通过常规设计计算，提出了合理确定张紧位置、张紧方式及张紧力大小的方法；对驱动装置及各主要部件进行了选型并校核。
 长距离变坡下运带式输送机运行工况复杂，在设计方面需考虑各种可能的工况，并计算最危险工况下输送机的各项参数，同时为保证运行过程中输送机各组成部分能适应载荷及工况的变化需将拉紧力统一，然后重新计算各工况下输送机参数，最终确定整机参数。
 本论文对长运距、大运量变坡下运带式输送机，综合考虑各方面的因素，采用合理的驱动方案、制动方式和软启动装置组合，有效保证长运距、大运量变坡下运带式输送机的可靠运行。
关键词：带式输送机  下运  长距离  变坡
STUDY ON COMMON TRANSPORTING BELT-CONVEYER
ABSTRACT Based on the design method for the conventional Downwards Transporting Belt-Conveyer (DTBC), the common used driving and braking devices were analyzed in the condition of long-distance and heavy-capacity. The driving and braking types were presented for this kind of conveyer. The soft-starting devices and their type-selection were analyzed. The key points were summarized for designing the long-distance, heavy-capacity DTBC used in varying slope environment. The reliable combined scheme of driving and braking units was put forward. The methods for determining the tensioning location, type and the amount of tensioning force based on the results of conventional calculations. The criterion was summarized for selecting driving device and the main components in the conveyer.
 Due to the complicated operational condition of long-distance and varying slope DTBC, it is necessary to consider every kind of possible working conditions during its design and calculate the parameters in the most dangerous condition. At the same time, it is necessary to uniform the tensioning force in order to suit the variations of the load and condition. Then the conveyer's parameters should be re-calculated under various conditions and the parameters should be determined finally.
 The research of this paper shows that by using reasonable combination of driving scheme, braking mode and soft-starting device and by determining the schemes for braking and soft-starting from the dynamical analysis and simulation, the reliable operation could be guaranteed for the long-distance, heavy-capacity and varying slope DTBC.
Key word Belt-conveyer, Downwards transportation, long-distance, Varying slope
 
目   录
1 绪论………………………………………………………………………………1
2.输送机的发展与现状……………………………………………………………2
2.1国内外带式输送机的发展与现状 ……………………………………………2
2.1.1国外煤矿用带式输送机技术现状和发展趋势 ……………………………2
2.1.2国内煤矿用带式输送机的技术现状及存在的问题 ………………………3
2.1.3我国煤矿用带式输送机的发展 ……………………………………………3
2.2选题背景 ………………………………………………………………………4
2.2.1主要技术参数 ………………………………………………………………4
2.2.2线路参数 ……………………………………………………………………5
2.2.3物料特性 ……………………………………………………………………5
2.2.4带式输送机工作环境 ………………………………………………………5
2.3本课题的研究内容 ……………………………………………………………6
2.3.1长运距、大运量下运带式输送机关键技术分析研究 ……………………6
2.3.2带式输送机的设计及驱动、制动方案的分析 ……………………………6
3长距离、大运量下运带式输送机关键技术的分析 ……………………………7
3.1下运带式输送机基本组成 ……………………………………………………7
3.2驱动方案的确定 ………………………………………………………………7
3.3带式输送机制动技术 …………………………………………………………8
4 长距离大运量下运带式输送机的设计…………………………………………11
4.1 带式输送机原始参数…………………………………………………………11
4.2 带式输送机的设计计算………………………………………………………11
4.2.1输送带运行速度的选择……………………………………………………11
4.2.2输送带宽度计算……………………………………………………………12
4.2.3初选输送带…………………………………………………………………12
4.3输送机布置形式及基本参数的确定…………………………………………13
4.3.1输送带布置形式……………………………………………………………13
4.3.2输送机基本参数的

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