机械5

摘要 轴向柱塞泵（英文名：Pisto
n pump）在机械行业中运用是相当广泛的,特别是履带行走的机械,如履带式修路机、柏油铺路机、甘蔗收割机、番茄收割机等,都广泛用到这类泵体.特别是这些年来,数控加工得到广泛应用,机械加工工艺得到全面提升,加工成本也得到降低,液压行走系统也越来越被一些机械设计人员所接受和选择,抛弃了传统的机械传递,改为了结构简单,重量轻,设计成本相对较低的液压系统.即提高了其机具的档次.也增加了产品的竞争力. 该类泵其原理是依靠柱塞在缸体中往复运动，使密封工作容腔的容积发生变化来实现吸油、压油,从而将机械能转化成液压能,将带有一定压力和流速的液压油传递给液压元件使其做功.轴向柱塞泵具有额定压力高、结构紧凑、效率高和流量调节方便等优点.其中SCY型轴向柱塞泵是可以手动调节输出流量的柱塞泵，其原理为转动手轮使变量活塞上下移动，带动变量头倾斜角变化，改变柱塞行程长短，达到变量的目的。 本设计对10SCY14-1B手动变量轴向柱塞泵对轴向柱塞泵进行了资料的收集和分析,主要分析了该类柱塞泵的结构组成,工作原理,例如,柱塞的结构型式﹑滑靴结构型式﹑配油盘结构型式等进行了分析和设计,还包括这些结构受力情况分析与计算.对缸体的材料选用以及校核,最后对变量机构分类型式也进行了详细的分析,比较了它们的优点和缺点.该设计最后对轴向柱塞泵的优缺点进行了整体的分析,对液压今后对我国军事工业,农业机械等行业产生的深远影响进行分析. 关键词:柱塞泵,液压系统,履带式行走,结构型式,今后发展 Abstract Axial pisto
n pump is widely used i
n machi
nery i
ndustry, especially the crawler machi
nery, such as Caterpillar road machi
ne, asphalt paver, sugarca
ne harvester, tomato harvesters etc., are widely used i
n this ki
nd of pump body. Especially i
n rece
nt years, is widely used i
n CNC machi
ni
ng, to improve the machi
ni
ng process, machi
ni
ng cost ca
n be reduced, the hydraulic drivi
ng system is also more a
nd more by some mecha
nical desig
n perso
n
nel to accept a
nd choose, aba
ndo
n the traditio
nal mecha
nical tra
nsmissio
n, to has the adva
ntages of simple structure, light weight, hydraulic system desig
n a
nd relatively low cost. Improve the equipme
nt level. Also i
ncreased the competitive
ness of their products This type of pump a
nd its pri
nciple is to rely o
n the pisto
n reciprocati
ng i
n the cyli
nder motio
n, make volume sealed worki
ng chamber to cha
nge oil, oil pressure, thereby co
nverti
ng the mecha
nical e
nergy i
nto hydraulic e
nergy, hydraulic fluid with certai
n pressure a
nd flow velocity is tra
nsferred to the hydraulic eleme
nt to make it work. Axial plu
nger pump with a rated pressure, compact structure, high efficie
ncy a
nd flow a
nd easy adjustme
nt. The SCY type axial plu
nger pump plu
nger pump ca
n be ma
nually adjusted output flow, its pri
nciple is the variable rotate the ha
ndwheel pisto
n to move up a
nd dow
n, drivi
ng the variable head tilt a
ngle cha
nge, cha
nge the plu
nger stroke le
ngth, to achieve variable objective. The desig
n of the 10SCY14-1B ma
nual variable axial plu
nger pump for data collectio
n a
nd a
nalysis of axial pisto
n pump, the mai
n compo
ne
nts of the structure, the pri
nciple of the pisto
n pump, for example, structure type, pisto
n slipper structure, plate structure is a
nalyzed a
nd desig
ned, i
ncludi
ng a
nalysis a
nd calculatio
n the force of these structures. To block the material selectio
n a
nd verificatio
n, the variable mecha
nism type are also a
nalyzed i
n detail, a
nd compares their adva
ntages a
nd disadva
ntages. The fi
nal desig
n of axial pisto
n pump the adva
ntages a
nd disadva
ntages of the overall a
nalysis, the future of Chi
na hydraulic i
ndustry, a
nalyzed i
nflue
nce of agricultural machi
nery a
nd other i
ndustries Keyword: The Plu
nger pump, hydraulic system, pedrail walki
ng, structure, developme
nt 目录 摘要1 Abstract 2 第1章绪论3 1.1选题的背景及意义3 1.2轴向柱塞泵概述4 1.3轴向柱塞泵研究现况5 1.4直轴式轴向柱塞泵的工作原理6 第2章主要零部件设计8 2.1柱塞设计8 2.1.1柱塞结构型式的选择8 2.1.2柱塞结构尺寸设计9 2.1.3柱塞摩擦副比压P﹑比功验算11 2.2滑靴设计12 2.2.1滑靴的结构型式的选择13 2.2.2滑靴结构尺寸设计14 2.3配油盘设计14 2.3.1过渡区设计15 2.3.2配油盘主要尺寸确定15 2.3.3验算比压p、比功pv 16 2.4缸体设计17 2.4.1通油孔分布圆和面积17 2.4.2缸体内﹑外直径﹑的确定18 2.4.3缸体高度H 19 2.5柱塞回程机构设计19 2.6变量机构设计21 2.6.1手动变量机构21 2.6.2手动伺服变量机构22 2.6.3恒功率变量机构23 2.6.4恒流量变量机构23 3主要零件受力分析与校核25 3.1柱塞受力分析与校核25 3.2滑靴受力分析与校核28 3.3配油盘受力分析与校核31 结论35 参考文献36 致谢37