履带式起重机桅杆顶升部分结构及其液压系统设计含4张CAD图+说明书

A履带式起重机装配图

履带式起重机桅杆顶升部分结构及液压系统设计
STRUCTURE AND HYDRAULIC SYSTEM DESIGN OF MAST LIFTING PART OF CRAWLER CRANE
摘要
作为整个机械设计重要组成部分，液压系统设计在设计中具有非常特殊的地位。作为一种广泛应用于水电、港口、建筑、铁路与石油等其他工程项目中移动式起重机械，履带式起重机主要是行走驱动系统、升降系统、陀螺系统和变幅系统等组成。本设计宗旨是履带式起重机高效率、高功率、高可靠性要求，对起重机升降系统进行全面的数据解析，在此基础上设计起升液压系统回路。
最终表明，针对于定量泵与变量电机组成常的闭式液压系统展开正确的探讨，增大起升系统的安全性，达到起重机重载荷低转速行驶、空载荷高转速节能控制的目的。
关键词履带式起重机；起升系统；液压系统；液压回路
Abstract
As an important part of the whole mechanical design, the hydraulic system design has a very special position in the design. As a kind of moving lifting machinery widely used in other engineering projects, such as hydropower, port, construction, railway and petroleum, crawler crane is mainly composed of walking drive system, lifting system, gyroscope system and amplitude variable system. The purpose of this design is the high efficiency, high power and high reliability requirements of the crawler crane, and the comprehensive data analysis of the lifting system of the crane. On this basis, the hoisting hydraulic system circuit is designed.
Finally, it shows that the closed hydraulic system, which is often composed of the quantitative pump and the variable motor, is discussed correctly, and the safety of the lifting system is increased, and the purpose of the crane heavy load and low speed driving and the high speed and high speed energy saving control is achieved.
Keywords crawler crane lifting system hydraulic system hydraulic circuit
目录
摘要I
Abstract II
1绪论1
1.1履带起重机综述1
1.1.1国内和先进国家的履带式起重机现状1
1.1.2履带式起重机液压发展趋势3
2履带式起重机起升系统6
2.1履带式起重机组成6
2.2起升系统结构与功能分析8
2.3起升液压系统8
3履带式起重机桅杆起升部分结构11
3.1起升机构11
3.1.1起升机构组成11
3.1.2起升机构工作原理12
3.2起重机起升机构动力学模型12
3.2.1创建起升机构动力学模型基本假定12
3.2.2起升机构动力学模型13
4起重机起升机构系统模型参数计算15
4.1质量（转动惯量） 15
4.2刚度15
4.2.1吊臂15
4.2.2钢丝绳16
4.3阻尼系数17
4.4等效力矩18
4.5桅杆起升机构液压系统动态仿真19
4.5.1建立液压系统数学模型19
4.5.2仿真计算结果和分析20
5算例（QY20）汽车起重机起升机构24
5.1起升工况动态仿真24
5.1.1仿真工况分析24
5.1.2仿真结果分析25
5.2仿真工况分析和结果分析25
6履带式起重机起升液压系统设计27
6.1起升液压系统设计及工作原理27
6.2起升液压系统设计计算28
6.3液压辅助元件选择30
6.3.1油路的通径30
6.3.2油箱选择31
结论33
致谢34
参考文献35

字数统计

设计所包含文件

起升系统液压原理图

起重机液压回路

液压缸