文档介绍：本科学生毕业设计
机车柴油机检修液压升降台设计
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院系名称: 机电工程学院
专业班级:机械设计制造及其自动化
学生姓名:
指导教师:
职称: 副教授
哈尔滨工程大学
二○一二年六月
The Graduation Design for Bachelor's Degree
otiveDiesel Engine Overhaul Hydraulic Lifting Platform Designed
Candidate:
Specialty:Construction Machinery
Class:08-4
Supervisor:Associate Prof. Liu YaJuan
Heilongjiang Institute of Technology
20012-06·Harbin
摘要
液压升降平台具有载重量大,结构坚固,升降平稳,操作简单,维护方便等特点。适用于工厂,仓库,车站等需要高空作业,搬运的场所。本文介绍了剪叉式液压升降平台的液压系统和工作特性。液压系统采用液压阀集成配置,可以显著减少管路联接和接头,降低系统的复杂性,增加现场添加和更改回路的柔性,具有结构紧凑、安装维护方便、泄漏少、振动小、利于实现典型液压系统的集成化和标准化等优点。其次,文中介绍了同步阀在双缸同步系统中的应用,剖析了其工作原理。
关键词: 液压升降平台;液压系统;液压集成块; 同步阀;同步系统
ABSTRACT
The hydraulic lift tables are characterized by their heavy loading, rugged construction, smooth rise, simple operation and easy maintenance. They are applicable to mid-air operation and transporting in factories, warehouses and railway stations and so on. This paper introduces the work characteristics and the hydraulic system of the lift tables of with twin scissors2truss support. Integrated hydraulic system (IHS) offers many advantages including reduced connectors, size plexity, and enhanced flexibility for installation and maintenance. It provides a cleaner, leak-free, less vibrant and more reliable solution to difficult machine control systemproblems. The next, this paper introduces application of the synchronous valve in hydraulic synchronous system, analyzes its work principle.
Key words:hydraulic lift tables;hydraulic system;hydraulic manifold block ;synchronous valve hydraulic ;synchronous system
目录
摘要 Ⅰ
Abstract Ⅱ
第1章绪论 1
1
1
2
2
第2章设计任务及总体设计方案 4
设计任务 4
结构简介及总体设计方案 4
本章小结 5
第3章主要参数设计计算 6
确定臂架组有关结构参数 6
臂长 6
臂架组的级数和剪数 6
臂架组的起始角和中止角 7
剪叉活动绞位移S 8
平台的最低位置和最高位置 8
计算液压缸行程 9
计算液压缸推力 11
计算平台升降速度 12
计算起升液压缸 13
确定液压缸内径D和活塞杆直径d 13
核算液压缸推力 14
液压缸所需流量 14
液压缸导向