可伸缩带式给料机设计

机械论文编号:JX286 所有图纸,外文翻译。论文字数:41803.页数:99
目    录
1 绪论 ...............................................................1
1.1可伸缩带式给料机的用途............................................ 1
1.2给料机械的特点、分类和应用.......................................  1
1.2.1连续输送机械的特点.............................................  1
1.2.2连续输送机械的分类 ............................................. 2
1.2.3连续输送机械的应用范围.........................................  3
1.3带式给料机的发展历史及发展趋势 ................................... 4
1.3.1带式输送机的发展历史...........................................  4
1.3.2带式输送机的发展趋势 ........................................... 7
1.3.3带式输送机发展的市场需求.......................................  7
1.4可伸缩大倾角带式给料机的特点 ..................................... 8
1.5 给料机的工作原理及结构..........................................  9
1.5.1 胶带的摩擦传动原理............................................  9
1.5.2给料机的结构...................................................  9
1.6设计要求、目的及基本参数.........................................  11
1.6.1设计要求.................................................  ......11
1.6.2设计目的 ....................................................... 12
1.6.3设计参数 ....................................................... 12
2 整体结构设计 ...................................................... 12
2.1 散状物料的特性..................................................  12
2.2带速的选择 ....................................................... 12
2.3总体布置设计 ..................................................... 13
2.4滚筒匹配 ................................................. ........14
2.5托辊间距 ......................................................... 15
3 参数计算 .......................................................... 15
3.1计算标准 ......................................................... 15
3.2原始参数.........................................................  15
3.3初定设计参数.....................................................  15
3.3.1带速的确定 ..................................................... 15
3.3.2带宽B的确定 .................................................... 15
3.4运行阻力的计算 ................................................... 16
3.4.1主要阻力................................................. ...... 16
3.4.2附加阻力 ....................................................... 17
3.4.3特种主要阻力...................................................  18
3.4.4特种附加阻力...................................................  19
3.4.5倾斜阻力 ....................................................... 19
3.4.6圆周驱动力 ..................................................... 20
3.5传动功率的计算 ................................................... 20
3.5.1传动滚筒的轴功率...............................................  20
3.5.2电机功率 ....................................................... 20
3.6胶带张力.........................................................  20
3.6.1输送带不打滑条件校核...........................................  20
3.6.2输送带下垂度校核 ............................................... 21
3.6.3传动滚筒合力Fn ................................................. 21
3.6.4各特性点张力................................................. .. 22
3.7拉紧装置计算.....................................................  23
3.7.1拉紧力的计算 ................................................... 23
3.7.2拉紧行程的确定：...............................................  23
3.8胶带及托辊的安全验算.............................................  23
3.8.1输送带的选择计算 ............................................... 23
3.8.2传动滚筒直径的核算 ............................................. 24
3.8.3托辊载荷的核算 ................................................. 24
4驱动装置的设计.....................................................  25
4.1传动简图.........................................................  26
4.2齿轮传动的参数选择 ............................................... 26
4.2.1．计算传动比i .................................................. 26
4.2.2传动齿轮模数m的确定 ............................................ 27
4.3齿数的确定.................................................  ......28
4.4电动滚筒减速齿轮几何计算.........................................  29
4.4.1电动滚筒第Ⅰ级减速齿轮计算.....................................  29
4.4.2电动滚筒第Ⅱ级减速齿轮几何计算.................................  32
4.5齿轮疲劳强度的校核计算...........................................  35
4.5.1．第一级外啮合传动齿轮接触疲劳强度校核计算.....................  35
4.5.2第一级齿轮弯曲疲劳强度校核计算 ................................. 38
4.5.3内啮合传动齿轮疲劳强度校核计算 ................................. 40
4.5.4弯曲疲劳强度校核计算 ........................................... 43
4.6电动滚筒主要零部件的设计计算 ..................................... 45
4.6.1滚动体的计算...................................................  45
4.6.2左右法兰轴的设计计算...........................................  47
4.6.3紧固件的计算.................................................  ..52
4.6.4键连接的计算...................................................  54
4.6.5轴承的选择计算 ................................................. 55
5 机架的设计计算.................................................  ...58
5.1固定臂主梁.......................................................  58
5.2伸缩臂移动机构...................................................  58
5.3伸缩臂阻力计算 ................................................. ..59
5.3.1伸缩臂的载重及自重.............................................  59
5.3.2伸缩臂移动阻力 ................................................. 59
6液压伸缩系统的整体设计.............................................  59
6.1系统的使用要求及速度负载分析.....................................  59
6.2液压系统方案设计.................................................  60
7液压伸缩系统部件设计................................................ 62
7.1液压缸的设计 ..................................................... 62
7.1.1液压缸的结构................................................. .. 62
7.1.2缸筒的设计与计算 ............................................... 63
7.1.3活塞设计................................................. ...... 65
7.1.4活塞杆设计................................................. .... 66
7.1.5导向套、密封圈和防尘圈的选择...................................  67
7.1.6中隔圈.........................................................  68
7.1.7油口...........................................................  69
7.1.8液压缸主要技术性能的计算.......................................  69
7.2泵组的选型设计计算 ............................................... 71
7.2.1液压泵的选择................................................. .. 71
7.2.2泵的驱动功率 ................................................. ..72
7.2.3泵站电机的选型 ................................................. 72
7.2.4电动机的安装形式...............................................  72
7.2.5联轴器 ................................................. ........72
7.2.6泵组底座................................................. ...... 72
7.2.7管路附件 ....................................................... 72
7.3阀组的选型设计...................................................  73
7.3.1电磁换向阀 ..................................................... 73
7.3.2液控单向阀 ..................................................... 73
7.3.3溢流阀 ......................................................... 73
7.3.3压力表.......................................................... 74
7.3.4压力表开关.................................................  ....74
7.4液压辅件的计算与选择.............................................  74
7.4.1液压管道计算 ................................................... 74
7.4.2油箱及其附件的选择和计算 ....................................... 75
7.5验算液压系统性能 ................................................. 77
7.5.1验算压力损失................................................. .. 77
7.5.2验算温升.................................................  ......78
7.5.3验算液压冲击 ................................................... 80
8给料机部件选型.....................................................  80
8.1输送带...........................................................  80
8.2驱动装置.........................................................  81
8.3改向滚筒.........................................................  81
8.4托辊.............................................................  81
8.5托辊形式选择、类型和应用.........................................  81
8.6拉紧装置 ......................................................... 82
8.6.1拉紧装置的作用和位置 ........................................... 82
8.6.2常用的拉紧装置 ................................................. 83
8.7清扫装置.........................................................  84
8.8导料槽................................................. .......... 84
结论 ................................................................ 86
参考文献............................................................  87
英文原文............................................................  88
中文翻译........................................................... . 94
致谢 ................................................................ 

摘    要

用传统的带式给料机给汽车、火车、轮船装煤炭及其它物料时，皮带机不能在原处一次性装满货物，并且托辊夹角小使皮带机倾角只能为17度，给一些高大容器装载带来很多的困难。
本论文设计内容是可伸缩带式给料机，是通过传动滚筒与胶带之间的摩擦力来传递牵引力，以胶带兼作牵引机构和承载机构的一种给料设备，伸缩臂尾部设置有可伸缩的液压支柱，使整机长度灵活的伸长或缩短，托辊之间夹角增大可使皮带机倾角可达到25度，具有给料量大，运输平稳，维修方便，可多点卸料，占地面积小等特点，给装车带来方便，能广泛的应用于各种散料集散地的生产现场。
本文论述了可伸缩带式给料机的总体设计方案，采用逐点张力计算以及ISO5048功率计算相结合的方法选择给料机合理的参数，对该给料机的部件进行选型、设计和校核，其中，对驱动装置和伸缩装置进行了较为详尽的设计计算和校核。

关键词： 可伸缩带式给料机； 电动滚筒； 液压系统

ABSTRACT

With the traditional belt feeding engine when for the automobile, the train, the steamboat installs the coal and other materials, the belt fastener cannot in the original position disposable pack the cargo, because the supporting roller included angle slightly enables the belt fastener inclination angle only to be 17 degrees, brings many difficulties for some big vessel loading.
The present paper design content is the expandable belt feeding engine, is transmits the force of traction through between the transmission drum and adhesive tape's friction force, concurrently makes the hauling organization and the load bearing organization one kind by the adhesive tape for the material equipment, expands and contracts the arm rear part establishment to have the expandable hydraulic prop, causes the complete machine length nimble elongation or the reduction, between the supporting roller the included angle increases to causes the belt fastener inclination angle to be possible to amount to 25 degrees, has for estimates in a big way, the transportation is steady, the service is convenient, the area slightly and so on characteristics, brings conveniently to the load, can the widespread application in each kind of bulk collection and distribution center production scene.
This article elaborated the expandable belt feeding engine's overall project design, uses method choice feeding engine reasonable parameter which point by point the computation as well as the ISO5048 power calculation unify, carries on the shaping, the design and the examination to this feeding engine's part, and expanded and contracted the installment to the drive to carry on the more exhaustive design calculation and the examination.

Keywords：Expandable belt feeding engine;  Electric roller;  Hydraulic system