文档介绍：图书分类号
密级
摘要
本文绪论部分对国内外随车起重机行业的发展现状进行了较详细地分析,较详细地介绍了国内外随车起重机的生产厂家、产品的类型和产品的发展趋势。
此次设计的是小型起重机起重臂的设计,在设计起重臂过程中要首先考虑的是伸缩臂的连接形式,根据伸缩臂的规定长度选择合适的节数,以及查阅相关资料计算出每节伸缩臂的长度尺寸。在设计每节臂的截面的时候应用到材料力学中对抗弯模量及危险截面的校核以及对截面强度的校核和验证最终对截面的尺寸以及截面的形状做出确定。
液压部分设计主要根据起重臂的伸缩要求,对液压执行元件及系统工作压力进行选择,伸缩水平液压缸进行结构设计,然后分析油路循环方式,调速方案并选择适当的液压阀,确定液压系统原理。
关键词随车起重机;起重臂;截面尺寸;液压系统
Abstract
In this paper, the introduction had a more detailed analysis of the domestic and foreign lorry crane industry development and introduced the domestic and foreign lorry crane manufacturer, the type of product and prouct trends more detailed.
The design of a small crane arm design, design boom in the course of the first to consider the telescopic boom is the connection forms, in accordance with the provisions of telescopic arm length choose a suitable number and access to relevant information calculated that each Festival stretching the length of arm size. In the design of each section of the arm to the mechanical application of the bending modulus and dangerous section of the check and cross-section of the strength of checking and verification of the final section the size and shape of a cross-section of the set.
According to mainly crane arm expansion request, the pressure system design is to choose hydraulic actuator and system working pressure and design the structure of telescopic hydraulic cylinders then analysis the ircuit cycle, governor of the programme and select the appropriate hydraulic Valves, decide the hydraulic system principle.
Keywords lorry crane boom size of section hydraulic system
目录
1 绪论 1
课题背景 1
1
1
3
随车起重机市场需求预测 5
随车起重机的分类 6
随车起重机现代设计方法概述 7
随车起重机的组成及工作原理 9
2 机械部分的设计及验算 10
主要性能参数 10
随车起重机参数确定 11
随车起重机吊臂截面类型选择 11
12
吊臂的危险截面的校验 15
吊臂的强度校验 17
工作压力选择 17
3伸缩机构液压回路 19
19
19
伸缩机构液压回路的设计计算 20
4 液压系统原理设计 21
液压系统型式 21
制定基本方案 22
液压泵的设计 24