毕业论文移动版

摘要塔式起重机在现代社会中起着越来越重要的作用，普遍使用在核电站建设，水电站建设，港口码头货物的起装，发挥着重要的作用。随着社会的进步，科技发展人类的居住空间越来越小，人们的房子越建越高，塔机在高层建筑建筑施工中发挥着越来越重要的作用。目前，我国塔机性能基本处于八、九十年代机械化水平，与现代智能化、数字化控制技术还有很大差距，跟不上市场的需要。代表当代塔机技术性能的全无级调速，PLC控制在发达国家中以十分普遍而我国目前充其量在2%；发达国家已批量生产，运行状态实现了全参数监控与故障诊断的智能型塔机，而我国刚刚启动，可以说还是空白，诸如在实验手段上，多数企业不具备对原材料的预处理和配套件的进厂检验能力；在配套件生产上，企业多，品种重复，生产质量差。本课题是在对塔式起重机机构的了解基础上，对塔式起重机起升机构、变幅机构、回转机构、液压顶升机构的总体设计。49062

毕业论文关键词：塔式起重机；起升机构；回转机构;机械设计

Abstract wer cranes play an increasingly important role in modern society, the widespread use in building nuclear power plants, construction of hydropower stations from port cargo loaded, play an important role. Along with social progress, scientific and technological development of human living space is getting smaller and smaller, the people of the house more to build the higher the tower crane is playing an increasingly important role in the high-rise building construction. At present, China's tower crane performance is basic in eight, the mechanization level of the nineties, and modern intelligent, digital control technology, there is a great gap to keep up with the needs of the market. Representative of contemporary tower crane technology performance stepless speed regulation, PLC control in developed countries are very common in China, at best, 2 percent; developed countries have mass, the running state parameter monitoring and fault diagnosis of intelligent tower machine, while China has just started, or gaps, such as the experimental means, the majority of enterprises do not have the pretreatment of raw materials and component parts into the plant inspection capabilities; component parts production enterprises, varieties of duplication, production quality poor. This issue is the overall design on the basis of the understanding of the institutions of the tower crane, tower crane hoisting mechanism, luffing mechanism, slewing mechanism, hydraulic jacking institutions.

Keywords: tower crane; hoisting mechanism; slewing mechanism；Mechanical Design

目 录

第一章 绪论 1

1.1塔式起重机背景 1

1.2塔式起重机发展现状及前景 1

第二章 设计原则和参数 7

2.1工作级别 7

2.2塔式起重机载荷及其组合 8

2.2.1载荷分类 8

2.2.2载荷系数 8

2.2.3载荷组合 10

2.3材料及其许用应力 10

2.4主要性能参数 12

第三章 总体方案设计 14

3.1总体布置 14

3.2金属结构 14

第四章 起升机构 18

4.1 钢丝绳与卷筒的选择 (责任编辑：qin)