带式输送机全自动机械张紧装置

机械论文编号:JX325  所有图纸,外文翻译。论文字数:23837.页数:87
目    录

第一章 概  述 ...........................................................1
1. 1拉紧装置的发展概况 ..................................................1
1.2 拉紧装置的作用 ......................................................1
1.3 对张紧装置的要求 ....................................................2
1.4 拉紧装置的位置 ......................................................2
1.5 大型带式输送机常用拉紧装置的类型.................................... 2
第二章主要设计参数及方案确定 ...........................................5
2.1 主要设计要求 ........................................................5
2.2 方案的确定.......................................................... 5
2.2.1 参考方案.......................................................... 5
2.2.2 方案对比 ..........................................................8
2.2.3 传动方案的确定 ....................................................8
第三章张紧装置总体设计................................................. 10
3.1电动机的确定 .........................................................10
3.2机构工作级别的确定 ...................................................11
3.2.1机构利用等级 .......................................................11
3.2.2机构载荷状态....................................................... 11
3.2.3 机构工作级别...................................................... 12
3.3钢丝绳直径计算与选取 .................................................12
3.4滚筒几何尺寸的确定 ...................................................12
3.5传动比的分配 .........................................................16
第四章蜗轮蜗杆减速器的设计............................................. 18
4.1材料及齿数的确定 .....................................................18
4.1.1 按蜗轮齿面接触疲劳强度计算........................................ 19
4.1.2蜗轮齿根弯曲疲劳强度校核计算 .......................................21
4.1.3圆柱蜗杆传动几何尺寸的计算 .........................................22
4.2蜗轮轴系设计 .........................................................25
4.3蜗杆轴系的结构设计.................................................. .30
4.3.1轴上零件的周向定位................................................. 33
4.3.2蜗杆面的受力....................................................... 34
4.4滚筒轴系设计 .........................................................40
4.5减速器箱体主要结构尺寸............................................... 41
4.6开式齿轮传动的设计与计算............................................. 45
4.6.1选择齿轮材料 .......................................................45
第五章滑轮组及卷筒结构的设计........................................... 52
5.1滑轮设计计算 .........................................................52

5.1.1滑轮结构和材料 .....................................................52
5.1.2钢丝绳进出滑轮时的允许偏角 .........................................52
5.1.3滑轮主要尺寸 .......................................................52
5.1.4绳槽断面尺寸.................................................. .....53
5.2铸造滑轮形式和轴承尺寸 ...............................................55
5.3卷筒的尺寸............................................................57
第六章螺栓联接件和轴承的校核 ...........................................59
6.1螺栓联接件的校核..................................................... 59
6.1.1卷筒轴轴承座联接螺栓选择与校核..................................... 59
6.1.2滑轮联接螺栓的选择与校核........................................... 60
6.2轴承的校核........................................................... 61
6.2.1蜗轮轴上滚动轴承选择与校核......................................... 62
6.2.2蜗杆轴上滚动轴承选择与校核......................................... 64
第七章设备的使用和维护................................................. 67
7.1钢丝绳的使用维护..................................................... 67
7.2轴承的润滑与密封..................................................... 67
7.3蜗轮蜗杆传动润滑 .....................................................69
7.4开式齿轮传动润滑..................................................... 69
结  论 ..................................................................70
致  谢 ..................................................................71
参考文献 ................................................................72
附录外文资料及翻译 .....................................................73

摘   要

     随着带式输送机向长距离、高速度、大功率方向发展，除驱动装置外，拉紧装置是保证输送机正常启动、运行、制动、和停车的不可缺少的重要部件之一，直接影响带式输送机的安全可靠性和稳定性。
通过对带式输送机各种拉紧装置的比较和分析，本设计主要是自动绞车式张紧装置的设计，其传动部分由蜗轮蜗杆传动和一对开式齿轮传动两部分组成，绞车用蜗轮蜗杆传动带动卷筒来缠绕钢丝绳，从而拉紧胶带，同时采用变频调速电机对张紧力进行控制。根据不同工作情况随时调节张紧力的大小，从而使输送机在运行工矿下安全、平稳、可靠的运行。能最大程度的延长皮带的寿命，大大节约了成本。
本文从系统整体出发，对绞车式拉进装置作了详细的论述。在皮带机启动阶段，能提供足够大的张紧力；启动完毕后又可使皮带的张紧力恢复到额定值以维持皮带机的正常运行。此设计的特点是：可靠性高、体积小、拉力大等。

关键词：带式输送机 ；拉紧装置 ；蜗轮蜗杆 ；拉紧力 ；
ABSTRACT

With the development of belt conveyor towards long distance , high speed , long carring and large driving power , besides driver device , Especially under the condition of starting , running , braking and stopping , And also , as one of the most indispensable parts in belt conveyor , take-up has an direct effect on safety , reliability and sbability of conveyor system on a whole .
 By contrasting and analyzing of various take-ups on belt conveyor . This design is mainly about automatic windlass tension station . Its drive part makes up into worm pair and gear driver . Windlass uses worm gear worm driving reel which binds wire rope to pull tight adhesive tape . In the meantime , it adopts the frequency conversion adjusting speed motor to control tensioning force . It adjusts pressing the strength size as necessary according to the different working condition . And the system can work safely and reliably in various conditions . It can be the greatest degree lengthen the leather belt the life , greatly saved the cost .
This paper expands on the strain unit of windlass in theory from the perspect of the whole system . When adhesive tape starts , strain unit can supply enough great tensioning force ; When finishes , it can make tensioning force of leather belt regaining assessed amount to keep normal running of leather belt . characteristic of this design is high reliability , small volume , big tensile force end so on .

Keywords: belt conveyor ; tensioning device ; worm pair ; tensioning force ;