移动式液压升降工作台设计

摘  要

升降台根据升降高度不同可分为单级，二级以及多级。移动式液压升降工作台的控制系统式液压系统，可根据实际载荷的大小计算选择相应的液压缸。为避免因液压缸的推力过大，导致液压缸的直径过大，在安装时产生干涉，选用两个直径小的液压缸代替一个直径大的液压缸。在升降台上升的时候，剪叉杆因压力过大滑行不同步，使升降台升降不稳定，在两相对剪叉杆间焊接一个连接杆来避免该问题。而对于多级升降台，采用多级液压缸分布在不同级别的支杆上，以达到较大高度，较大载荷的要求。总体方案确定后，在满足结构设计的基础上对受力较大的零部件进行强度计算和刚度校核，验证是否满足设计要求。
控制系统是液压系统，对液压系统进行设计，使其实现升降台上升，保压，下降等动作要求。液压系统的设计主要是确定液压系统原理图以及各个液压元件的选择和计算。此外，还包括液压缸的推力计算、选择和活塞杆的校核。本文提出了一种采用蓄能器来储存液压能，实现能量回收的方法。

关键词：升降台，剪叉机构，液压系统，能量回收装置，蓄能器

ABSTRACT
According to the height of lifts can be divided into different single-stage,and two multi-level.Mobile hydraulic lifting table of the control system of hydraulic system,based on the actual size of the load calculation select the appropriate hydraulic cylinders.Hydraulic cylinders in order to avoid the thrust is too large,leading to the hydraulic cylinder diameter is too large,at the time of installation have to interfere in the choice of two small diameter of the cylinder instead of a large diameter of the cylinder.The increase in lifts,scissors under pressure due to excessive taxiing not synchronized,so that lifts unstable movements in two relatively scissors-a connection between the welding rod to avoid the problem.For Multi-Platform,a multi-stage hydraulic cylinders distributed in different levels of the sting,so as to achieve greater height,greater load requirements.After determining the overall plan,designed to meet the srtucture on the basis of the lager components of the calculation of strength and stiffness to check,verify whether to meet the design requirements.
Control system is the hydraulic system,hydraulic sustem design,make it lifts up,packing,such as decreased demand action.Hydraulic system is to determine the design of the main hydraulic system and the principle of individual choice and hydraulic components of the calculation.In addition,hydraulic cylinders,including the thrust,the choice of rod and the check.In this paper,a used hydraulic accumulator to save energy,to achieve energy recowery methods.

Keywords:lifting table,scissors,hydraulic systems,energy recoverry device,accumulator
 

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