带式输送机变频张紧装置设计

机械论文编号:JX251 所有图纸,任务书，外文翻译。论文字数:29613.页数:92

目    录

1 概  述 ..................................................................1
1.1张紧装置的作用 .........................................................1
1.2张紧装置分类........................................................... 2
1.3张紧装置的发展概况及国内外现状......................................... 5
1.4 对张紧装置的要求...................................................... 7
2 主要设计参数及方案确定 ..................................................7
2.1 主要设计要求 ..........................................................7
2.2 方案的确定............................................................ 7
2.3 总体方案的确定........................................................ 8
3 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
3.3钢丝绳直径计算与选取.................................................... 11
3.4滚筒几何尺寸的确定...................................................... 12
3.5传动比的分配 ............................................................15
4 绞车减速装置的设计计算................................................... 17
4.1绞车减速器参数确定...................................................... 17
4.2齿轮的设计计算 ..........................................................18
4.2.1齿轮材料的选择和热处理方法 ............................................18
4.2.2初步齿轮的主要参数 ....................................................18
4.2.3齿面接触疲劳强度设计计算 ..............................................18
4.2.4齿根弯曲疲劳强度校核计算.............................................. 20
4.2.5齿轮其他主要尺寸的计算 ................................................20
4.3 蜗杆蜗轮传动的设计计算 .................................................20
4.3.1材料及齿数的确定 ......................................................21
4.3.2 按蜗轮齿面接疲劳强度计算 .............................................22
4.3.3蜗轮齿根弯曲疲劳强度校核计算.......................................... 23
4.3.4圆柱蜗杆传动几何尺寸的计算 ............................................24
4.4蜗杆轴系的结构设计 ......................................................26
4.4.1轴上零件的周向定位.................................................... 29
4.4.2蜗杆面的受力.......................................................... 30
4.5蜗轮轴系设计............................................................ 34
4.6开式及过桥齿轮传动的设计与计算 ..........................................39
4.6.1 齿轮材料及数据参数................................................... 39
4.6.2 齿面接触疲劳强度设计计算............................................. 40
4.6.3 齿根弯曲疲劳强度的计算............................................... 41
4.6.4 齿轮基本尺寸参数..................................................... 41
4.7减速器箱体主要结构尺寸.................................................. 43
5 滚筒轴的设计计算......................................................... 46
5.1滚筒和齿轮上的作用力 ....................................................46
5.2确定轴的结构方案........................................................ 47
5.3轴的强度校核............................................................ 47
6 滑轮及卷筒结构的设计..................................................... 54
6.1滑轮设计计算............................................................ 54
6.2铸造滑轮形式和轴承尺寸 ..................................................56
6.3卷筒的尺寸.............................................................. 58
7 螺栓联接件和轴承的校核 ...................................................59
7.1螺栓联接件的校核........................................................ 59
7.1.1卷筒轴轴承座联接螺栓选择与校核 ........................................59
7.1.2滑轮联接螺栓的选择与校核 ..............................................60
7.2轴承的校核.............................................................. 62
7.2.1蜗杆轴上轴承选择与校核................................................ 62
7.2.2蜗轮轴上轴承选择与校核 ................................................64
7.2.3卷筒轴上的轴承选择与校核.............................................. 66
8 设备的使用和维护......................................................... 68
8.1钢丝绳的使用维护........................................................ 68
8.2轴承的润滑与密封........................................................ 68
8.3蜗轮蜗杆传动润滑........................................................ 70
8.4开式齿轮传动润滑........................................................ 70
结  论..................................................................... 72
参考文献 ...................................................................73
附录 .......................................................................74
英文原文................................................................... 74
中文译文................................................................... 87
致  谢 .....................................................................92

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，张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张紧装置的比较和分析后可知，按现有的各类张紧装置,很难达到最佳的张紧效果。本设计利用变频拖动技术对胶带张紧力进行实时控制和自动调节，而且张紧力响应速度快，从而降低了对皮带的冲击，延长了皮带和设备的使用寿命，节约了输送机的运行成本。该张紧装置结构简单、维护方便，并且能够实现长距离带式输送机的张紧要求。
本设计从系统整体出发，对张紧装置的机械传动系统作了详细的方案论述及确定，对绞车、减速器、卷筒等主要部件进行了设计，对主要的轴、齿轮等进行了结构和强度设计计算，同时对设备的使用及维护进行了简要的论述。所设计的张紧装置可以根据输送机不同的运行工况自动调节张紧力的大小，从而使胶带张紧力控制在最佳状态，保证了输送机安全、平稳、可靠的运行。

关键词：带式输送机 ；张紧装置 ；张紧力 ；变频

ABSTRACT

With the belt conveyor to the long-distance, high-speed, high-power direction, with the exception of drive, the tensioning device is to guarantee the conveyor  normal start, run, braking, and stopping the indispensable one of the important parts, immediate influence belt type conveyer's security reliability and stability.    
Through the various belt conveyor tensioning device comparison and analysis tells us that according to the existing tension of all types of devices, it is difficult to achieve the best results of tension. Frequency of the use of design drag on the tape take-up of technology to conduct real-time control and automatic adjustment, but take-up of the fast response, thus reducing the impact of the belt, a belt and equipment to extend the service life, saving a conveyor operation Cost. The tensioning device structure is simple, easy maintenance, and to achieve long belt conveyor take-up requirements.    The design departure from the system as a whole, the installation of mechanical tension transmission system in detail and identified on the programme, the winch, reducer, reel, and other major parts of the design, the main shaft, gear, such as the structure and Strength design, while the use of the equipment and maintenance of a brief discussion. Designed by the tensioning device can conveyor different operating conditions automatically adjust the size of tension, so that tape tension control in the best condition to ensure the conveyor security, stable, reliable operation.

Keywords: Belt conveyors ；Stretching device ；Tensioning force ；Frequency conversion