机械5

摘要:由于工业的需要，近年来国内对手动液压叉车的需求量逐年增加，本本着节省材料、成本低廉、安全简易、效率高的原则，立足于对液压叉车的性能作出优化设计。首先分析了手动液压叉车的结构特点及应用范围，完成了对手动液压叉车的结构造型设计，确定了叉车设计的重要设计数据，根据叉车的不同工作需求，设计出叉车的车身长度及跨度、货叉的大小与货物的起升高度，保证叉车从最低位移至最高位的工作要求，并提升对货物的载重量。同时对叉车的传动方案做出选择，提高叉车的经济性及安全可靠性。 关键词：叉车起升搬运 Abstract: Due to the
needs of i
ndustry, the dema
nd for ma
nual hydraulic forklifts has i
ncreased year by year i
n rece
nt years. Based o
n the pri
nciple of savi
ng materials, low cost, safe a
nd simple, a
nd high efficie
ncy, this paper is based o
n the optimizatio
n desig
n of the performa
nce of hydraulic forklifts. Firstly, the structural characteristics a
nd applicatio
n ra
nge of the ma
nual hydraulic forklift are a
nalyzed. The structural desig
n of the ma
nual hydraulic forklift is completed. The importa
nt desig
n data of the forklift desig
n is determi
ned. Accordi
ng to the differe
nt worki
ng requireme
nts of the forklift, the le
ngth a
nd spa
n of the forklift are desig
ned. The size of the fork a
nd the lifti
ng height of the cargo e
nsure the forklift's worki
ng requireme
nts from the lowest displaceme
nt to the highest positio
n a
nd i
ncrease the load o
n the cargo. At the same time, the choice of the tra
nsmissio
n scheme of the forklift is made to improve the eco
nomy, safety a
nd reliability of the forklift. Keywords: Forklift Hoist Tra
nsport 目录 1前言1 1.1课题的研究目的1 1.2手动液压叉车的简介1 1.3叉车国内外的研究现状及发展趋势2 1.4研究内容2 2手动液压叉车的介绍4 2.1叉车主要结构4 2.2液压叉车参数表4 2.3叉车受力分析5 2.4叉车主要特点6 2.5叉车设计难点6 3动力系统设计7 3.1液压系统原理分析7 3.2液压缸计算8 3.2.1大液压缸内缸壁直径D1与壁厚δ的计算8 3.2.2活塞杆直径d的计算与校核8 3.2.3工进时液压缸的流量9 3.2.4油箱容积计算9 3.2.5小液压缸计算10 3.3油路设计10 4传动系统设计12 4.1传动方案确定12 4.2链传动叙述13 4.3链条链轮设计13 4.3.1链轮设计13 4.3.2链条设计17 4.3.3链轮轴的设计校核18 4.4链轮轴承选择21 4.4.1计算轴承的的载荷21 4.4.2选择轴承润滑方式22 5叉车外形设计23 5.1门架设计23 5.1.1门架简介23 5.1.2门架材料及尺寸选取24 5.2货叉设计24 5.2.1货叉的简介24 5.2.2货叉强度校核25 5.2.3货叉的刚度校核27 结论31 参考文献32 致谢33