起重塔机顶升及回转支撑机构设计

摘 要

塔式起重机主要用于房屋建筑施工中物料的垂直和水平输送及建筑构件的安装。目前，国内推行的新型城镇化无疑会产生大量的建设任务，对塔式起重机的使用会越来越多。对塔机的合理设计将会直接影响塔机的安全、效率及稳定等方面。本次课程设计重点设计计算了QTZ40型塔式起重机的回转机构与顶升系统，回转和顶升是塔机的主要工作动作，通过对各个零部件进行计算、选型，充分保证在安全的前提下塔机的正常运行。利用软件SolidWorks三维软件进行实体造型，先做出三维模型，然后利用三维模型导出二维图纸，提高准确性和效率。

关键字：塔式起重机；QTZ40；回转机构；顶升

I

ABSTRACT

The tower crane is mainly used in the vertical and horizontal transportation of the material and the installation of the building component in the construction of the housing construction.At present,the new urbanization will produce a lot of construction tasks,the use of tower crane more and more.The reasonable design of the tower crane will directly influence the safety,efficiency and stability of tower crane etc.The curriculum design of the key design calculation the QTZ40 tower crane slewing mechanism and lifting system,rotary and lifting is tower crane main action, through calculation,selection,and fully guarantee the normal operation of tower crane under the premise of security for the parts.Using the software SolidWorks 3D software to carry out the solid modeling,the 3D model is first made,then 2D drawings are derived by 3D model, and the accuracy and efficiency are improved.

Keyword: Tower crane; QTZ40; rotary mechanism; jacking

II

目 录

第1章 绪论 ............................................................. 1

1.1 毕业设计背景及意义 ............................................... 1 1.2 塔式起重机的现状及前景 ........................................... 1 1.3 塔式起重机的研究现状 ............................................. 1 1.4 主要研究内容及方法 ............................................... 2 第2章 塔机零件 ......................................................... 3

2.1确定塔式起重机的类型 .............................................. 3 2.2塔机专用零件设计计算 .............................................. 3

2.2.1钢丝绳 ...................................................... 3 2.2.2滑轮及滑轮组 ................................................ 4 2.2.3卷筒 ........................................................ 7 2.2.4吊钩 ........................................................ 9

第3章 塔机载荷及其计算 ................................................ 11

3.1作用在塔机上的载荷 ............................................... 11

3.1.1 起升载荷FQ ................................................ 11 3.1.2 自重载荷Fg ................................................ 11 3.1.3 水平惯性载荷和变幅回转惯性载荷 ............................ 11 3.1.4风载荷FW ................................................... 12 3.1.5实验载荷Ft ................................................. 16 3.2载荷分类及载荷组合 ............................................... 16 第4章 塔机的金属结构 .................................................. 18

4.1 塔身标准节 ...................................................... 18

4.1.1 塔身结构腹杆形式 .......................................... 18 4.1.2 塔身标准节的连接形式 ...................................... 19 4.2起重臂 ........................................................... 19 4.3回转塔身 ......................................................... 21 4.4塔顶 ............................................................. 22

III

4.5平衡臂 ........................................................... 23

4.5.1平衡臂结构的选用 ........................................... 23

第5章 塔机回转支撑机构 ................................................ 25

5.1回转支承 ......................................................... 25

5.1.1塔机回转支承的分类 ......................................... 25 5.1.2回转支承的选用 ............................................. 26 5.1.3回转支座 ................................................... 34 5.1.4回转驱动装置 ............................................... 34

第6章 顶升机构 ........................................................ 40

6.1顶升套架 ......................................................... 41 6.2液压顶升机构 ..................................................... 42 6.3顶升机构的关键零部件 ............................................. 44 6.5顶升的具体实现过程 ............................................... 47 第7章 结论 ............................................................. 48 参考文献 ................................................................ 49 致谢 .................................................................... 50

IV

百度搜索“77cn”或“免费范文网”即可找到本站免费阅读全部范文。收藏本站方便下次阅读，免费范文网，提供经典小说综合文库起重塔机顶升及回转支撑机构设计在线全文阅读。