摘要该翻转机是起重机吊臂装配生产线上非常重要的设备，它性能的好坏会直接影响到起重机吊臂的装配精度、生产线的生产水平以及操作工人的人身安全。该毕业设计就是设计起重机吊臂装配翻转机，包括总体方案设计、关键结构的分析与设计、机械部分的计算与设计以及电气部分的设计。该翻转机的工作原理是：将减速电动机输出轴与蜗杆通过联轴器相连，带动蜗轮转动进而带动轴的旋转，夹具加紧吊臂随之旋转。该翻转机采用PLC控制。该设计解决了形状细长的箱型吊臂在翻转机中的定位和加紧问题，吊臂能够360度回转，能在任意角度位置固定，以便于某些零部件的安装。本次毕业设计设计出的翻转机能实现最大长度不大于9米、横截面高度小于650毫米、宽度小于500毫米的吊臂的翻转。该翻转机操作简便、易于调整、能实现不同尺寸的箱型吊臂的翻转，对操作工人的技术水平要求不高，安全可靠，却成本低廉。与人工翻转相比，不仅提高了生产效率、降低了工人的劳动强度，而且提高了安全系数，保证了工人的人身安全。73800

该论文有图10幅，表16个，参考文献10篇。

毕业论文关键词：起重机吊臂  装配  翻转机  PLC 

Design of crane boom assembly turning machine

Abstract The turning machine is a very important equipment in crane arm assembly line, its performance is good or bad will directly affect the crane arm assembly precision and production line production level and the workers to operate the personal safety。 The graduation design is the design of crane boom assembly flip machine, including the overall program design, analysis and design of the key structure, mechanical part of the calculation and design and electrical part of the design。 The turnover machine works: the output shaft of the reducer is connected with the worm through the coupling, and the worm wheel rotates to drive the rotation of the shaft。 The turning machine adopts PLC control。The design solves the problem of positioning and tightening of the long and thin box type boom in the turning machine, and the lifting arm can rotate 360 degrees, and can be fixed at any angle so as to facilitate the installation of certain parts。 The graduation design and design of the flip function to achieve maximum length of not more than 9 meters, cross section height of less than 650 mm, width of less than 500 mm of the boom of the boom。 The turnover machine has the advantages of simple operation, easy adjustment, and can realize the turnover of the box type suspension arm with different sizes, and the technical level of the operator is not high, safe and reliable, but the cost is low。 Compared with the manual turning, it not only improves the production efficiency, reduces the labor intensity of the workers, but also improves the safety factor, which ensures the safety of the workers。

   Key Words: Crane boom   Assembly  Turning machine  PLC

目  录

摘要-Ⅰ

Abstract--Ⅱ

目录-Ⅲ

图清单-Ⅴ

表清单-Ⅴ

变量注释表-Ⅵ

1 绪论--1

1。1我国制造业发展背景-1

1。2起重机吊臂装配翻转机研究现状-1

1。3研究的目的与意义-3

1。4研究的主要内容-3

2 设计方案的确定--4

2。1设计要求-4

2。2总体方案设计-4

3 设计计算--6

3。1电动机的选择-6

3。2计算传动装置的运动和动力参数-7

3。3蜗轮蜗杆的设计计算-8

3。4轴的设计计算16

4 零部件型号选择-21

4。1轴承选择及寿命计算21

4。2轴承座型号的选择23

4。3键的尺寸和型号24