机械5

摘要 本次设计的题目是家用升降移动小车的设计，家用升降移动小车设计初衷为了方便家庭搬运物品，具有无污染，辅助力强，该产品具有结构紧凑，运输灵活，操作简单，回转半径小等特点。适用于家庭购物的搬运如米、面、油的运输。家用升降移动小车配合液压升降盘可减少人的搬运工作量，提高搬运效率。它主要包括三个部分的内容：框架材料选娶行走机构的设计，升降系统的设计。 在本设计中将升降液压系统的设计做为主要的内容进行设计，行走机构及其框架材料作为次要设计。 关键词:家用升降移动小车；家庭搬运；液压系统；行走机构 Abstrac The topic of this desig
n is the desig
n of the household lifti
ng mobile trolley. The origi
nal desig
n of the household lifti
ng mobile trolley is desig
ned to facilitate the family to carry items. It has
no pollutio
n a
nd stro
ng auxiliary force. The product has the characteristics of compact structure, flexible tra
nsportatio
n, simple operatio
n, small tur
ni
ng radius, etc... It is suitable for tra
nsportatio
n such as rice,
noodles a
nd oil for family shoppi
ng.The household lifti
ng mobile trolley combi
nedwith the hydraulic lifti
ng plate ca
n reduce people's ha
ndli
ngworkload a
nd improve ha
ndli
ng efficie
ncy. It mai
nly i
ncludes three parts: the selectio
n of frame materials, the desig
n of thewalki
ng mecha
nism, a
nd the desig
n of the lifti
ng system. I
n this desig
n, the desig
n of the lifti
ng hydraulic system is take
n as the mai
n co
nte
nt, a
nd thewalki
ng mecha
nism a
nd its frame material are used as the seco
ndary desig
n. Keywords: household lifti
ng mobile trolley; family ha
ndli
ng; hydraulic system;walki
ng mecha
nism 目录 摘要I Abstrac II 前言1 1家用升降移动小车简介2 1.1家用升降移动小车的用途2 1.2家用升降移动小车的组成2 1.3家用升降移动小车在国内外发展现状2 1.4本文的主要内容4 2家用升降搬运小车整体设计及机构部件计算5 2.1总体方案的产品方案设计5 2.2家用升降移动小车的设计方案5 2.2.1基本结构5 2.2.2工作原理5 2.3框架结构设计及材料选择6 2.3.1框架材料的选用6 2.3.2导轨的选型8 2.4杆受力分析8 3液压控制系统设计11 3.1家用升降移动小车液压控制系统工作原理11 3.2液压系统的组成12 3.3主要参数的计算12 3.3.1系统工作压力的计算12 3.3.2油缸的作用力13 4.提升结构强度分析20 4.1网格划分简介20 4.1.1ANSYS可选择的网格划分方式20 4.1.2指定单元划分形状20 4.2边界条件21 4.3结果分析26 5.主要零部件的选型校核27 5.1伺服电机的选型27 5.2轮轴的计算28 5.3联轴器选型计算31 5.4轴承的选择31 5.5轴承的校核32 5.6键的类型及选择33 5.7家用升降小车整体结构35 致谢36 参考文献37