A油缸装配图
QY25型液压起重机变幅油缸设计
摘要
伴随国内经济建设的飞速发展，我国的基础建设力度正逐渐加大。道路交通、机尝港口、水利水电、市政建设等基础设施的建设规模也越来越大。市场上液压起重机的需求也随之增加。液压起重机是一种使用广泛的工程机械，这种机械具有机动性好、工作适应性强、自备动力不需要配备电源、能在野外作业、操作简便灵活等特点，因此在交通运输、城建、消防、大型物料尝基建、急救等领域得到了广泛的使用。它对减轻劳动强度、节省人力、降低建设成本、提高施工质量、加快建设速度、实现工程施工机械化起着十分重要的作用。
本文着重对QY25型液压起重机液压系统的变幅液压缸进行研究和设计。本文主要任务是查阅相关的资料和文献，确定起重机变幅系统的方案以及变幅机构三铰点的位置。根据已知数据，对起重机的变幅液压缸的工作行程、导向长度、缸筒内径及活塞杆直径等进行设计和计算，然后对缸筒壁厚、外径和缸底厚度进行强度计算，活塞杆强度校核和稳定性进行验算。根据计算的数据画ProEngineer三维图形、AUTOCAD二维图形。变幅液压缸的设计与计算主要参照《新编液压工程手册》和《机械设计手册》中的公式。最终通过液压缸的设计达到本次设计的宗旨。
关键词：液压起重机、变幅液压缸、强度计算、强度校核
ABSTRACT
With the rapid development of domestic economic construction, China's infrastructure is gradually increasing intensity. Construction scale road transport, airports, ports,water utilities, municipal construction and other infrastructure is also growing. Hydraulic crane on the market demand increases. Hydraulic cranes is awidely-used construction machinery, such machinery has good mobility, strongwork adaptability, self-poweredwith a power supply is not required, towork in the field, easy to operate and flexible features, so the transportation, construction, Fire, a large field of materials, infrastructure, and emergency and other fields has beenwidely used. It reduces the labor intensity, save manpower, reduce construction costs and improve construction quality, accelerate the construction speed, realize construction mechanization plays avery important role.
This article focuses on the QY25 hydraulic luffing crane hydraulic cylinder hydraulic system research and design. The main task of this paper is to review the relevant information and documentation to determine the location of the program aswell as luffing luffing mechanism of the three nodes of the system. According to the known data on the hydraulic cylinder luffing craneworking stroke, the guide length, diameter and piston rod diameter cylinder design and calculation, etc., and then the cylinderwall thickness, diameter and thickness strength calculation Bottom piston pole strength check and stability checking. According to the three-dimensional graphics computing painting ProEngineer, AUTOCAD two-dimensional graphics. Luffing cylinder design and calculation of the main reference"New Hydraulic Engineering Handbook" and"Mechanical Design Manual" in the formula. Ultimately achieve the aim of this design by a hydraulic cylinder design.
Keywords: hydraulic crane, luffing cylinder, strength calculation, strength check
目录
摘要I
ABSTRACT II
第1章绪论3
1.1国内外汽车起重机的发展现状与趋势3
1.2 QY25型汽车起重机简介4
1.3液压传动在汽车起重机上的优点5
1.4本课题设计的价值5
1.5本课题设计的任务6
第2章变幅机构三铰点及油缸行程的确定8
2.1三铰点的运动和受力要求8
2.2臂架油缸铰点位置确定9
2.3变幅油缸行程的确定9
第3章变幅液压缸的设计与计算10
3.1变幅油缸活塞杆工作和返回速度的确定10
3.2变幅油缸推力的确定10
3.3变幅油缸压力的确定11
3.4变幅油缸缸筒内径D的确定11
3.5变幅油缸活塞杆的设计及直径d的确定12
3.6缸筒壁厚δ的确定13
3.7缸筒底部的设计14
3.8活塞的设计15
3.9活塞导向环的设计17
3.10进、出油口尺寸的设计18
3.11耳环尺寸的设计18
3.12缓冲装置的设计19
3.13排气装置的设计19
3.14密封装置的设计20
第4章变幅液压缸主要零件的校核22
4.1变幅油缸缸筒内径D的校核22
4.2缸筒壁厚δ的校核22
4.3缸筒底部的强度校核23
4.4活塞杆强度校核23
4.5连接零件的强度计算24
第5章结论26
参考文献27
导向环
缸筒
活塞
活塞杆
设计所包含文件
说明书前三页
字数统计
3通油管座
