REXROTH柱塞泵柱塞泵A10VO28DFR/31R-PSC62N00，德国力士乐双联泵单泵，上海韦米机电设备有限公司主营销售产品，原厂原装，质量保障，热诚欢迎新老客户咨询购买！
 
柱塞泵一般分为单柱塞泵、卧式柱塞泵、轴向柱塞泵和径向柱塞泵。
单柱塞泵
结构组成主要有偏心轮、柱塞、弹簧、缸体、两个单向阀。柱塞与缸体孔之间形成密闭容积。偏心轮旋转一转，柱塞上下往复运动一次，向下运动吸油，向上运动排油。泵每转一转排出的油液体积称为排量，排量只与泵的结构参数有关。
卧式柱塞泵
卧式柱塞泵是由几个柱塞（一般为3个或6个）并列安装，用1根曲轴通过连杆滑块或由偏心轴直接推动柱塞做往复运动，实现吸、排液体的液压泵。它们也都采用阀式配流装置，而且大多为定量泵。煤矿液压支架系统中的乳化液泵一般都是卧式柱塞泵。
乳化液泵用于采煤工作面，为液压支架提供乳化液，工作原理靠曲轴的旋转带动活塞做往复运动，实现吸液和排液。
轴向柱塞泵是活塞或柱塞的往复运动方向与缸体中心轴平行的柱塞泵。轴向柱塞泵利用与传动轴平行的柱塞在柱塞孔内往复运动所产生的容积变化来进行工作的。由于柱塞和柱塞孔都是圆形零件，加工时可以达到很高的精度配合，因此容积效率高
直轴斜盘式柱塞泵分为压力供油型和自吸油型两种。压力供油型液压泵大都是采用有气压的油箱，靠气压供油的液压油箱，在每次启动机器之后，必须等液压渍箱达到使用气压后，才能操作机械。如液压油箱的气压不足时就启动机器，会对液压泵内的与滑靴造成拉脱现象，出会造成泵体内回程板与压板的非正常磨损。
径向柱塞泵可分为阀配流与轴配流两大类。阀配流径向柱塞泵存在故障率高、效率低等缺点。国际上70、80年代发展的轴配流径向柱塞泵克服了阀配流径向柱塞泵的不足。由于径向泵结构上的特点，固定了轴配流径向柱塞泵比轴向柱塞泵耐冲击、寿命长、控制精度高。变量行程短泵的变量是在变量柱塞和限位柱塞作用下，改变定子的偏心距实现的，而定于的大偏心距为 5—9mm（根据排量大小不同），变量行程很短。且变量机构设计为高压操纵，由控制阀进行控制。故该泵的响应速度快。径向结构设计克服了如轴向柱塞泵滑靴偏磨的问题。使其抗冲击能力大幅度提高。
液压式
液压柱塞泵靠气压供油的液压油箱，在每次启动机器后，必须等液压油箱达到使用气压后，才能操作机械。直轴斜盘式柱塞泵分为压力供油型的自吸油型两种。压力供油型液压泵大都采用有气压的油箱，也有液压泵本身带有补油分泵向液压泵进油口提供压力油的。自吸油型液压泵的自吸油能力很强，无需外力供油。

上海韦米机电设备有限公司主营产品：
液压元件：柱塞泵、叶片泵、齿轮泵、马达、截止阀、方向阀、减压阀、溢流阀、手动阀、流量控制阀、比例阀、伺服阀、插装阀、电液换向阀、电磁阀、换向阀、电磁球阀、蓄能器、放大版、压力继电器、压力传感器。
气动元件：气动阀、阀岛、阀组、电磁阀、手动阀、换向阀、压力调节阀、流量控制阀，止回阀、气缸和驱动装置、压缩空气气源处理单元、真空技术、传感器、气动连接技术，电气连接技术。
电控伺服：伺服驱动器，伺服电机、PLC模块、I/O模块、框架模块、电源模块、数据接口模块、键相位模块、继电器模块、测速模块、温度模块、显示屏、传感器、探头、前置器、延伸电缆。
REXROTH柱塞泵柱塞泵A10VO28DFR/31R-PSC62N00
德国力士乐REXROTH柱塞泵型号：
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液压传动技术在机械中的应用.
驱动机械运动的机构以及各种传动和操纵装置有多中形式。根据所用的不见和零件，可分为机械的、电气的、气动的、液压的传动装置。经常还将不同的形式组合起来运用一四位一体。由于液压传动具有很多优点，使这种新技术发展的很快。液压传动应用与金属切割机床也不过四五十年的历史。航空工业在1930年以后才开始采用。特别是近二三十年一来液压技术在各种工业中的应用越来越广泛。
1、在机床上，液压传动常应用在以下的- -些装置中
1.1进给 传动装置磨床砂轮架和工作台的进给运动大部分采用液压传动;车床、六角车床、自动车床的刀架或转塔刀架，铣床、刨床、组合机床的工作台等的进给运动也都采用液压传动。这些部件有的要求快速移动，有的要求慢速移动。有的既要求快速移动，也要求慢速移动。这些运动多半要求有较大的调速范围，要求在工作中无级调速;有的要求持续进给，有的要求间歇进给;有的要求在负载变化下速度恒定，有的要求有良好的换向性能等等。所有这些要求都是可以用液压传动来实现的。
1.2往复主题运动传动装置龙i刨床的工作台、牛头刨床或插床的滑枕，由于要求作高速往复直线运动并且要求换向冲击小、换向时间短、能耗低，因此都可以采用液压传动。
1.3仿形装置车床、铣床、刨床上的仿形加工可以采用液压伺服系统来完成。起精度可达0.01-0. 02m。此外，磨床上的成型砂轮修正装置亦可采用这系统。
1.4 辅助装置机床上的夹紧装置、齿轮箱变速操纵装置、丝杆螺母间隙消除装置、垂直移动部件平衡装置、分度装置、工件和刀具装卸装置、工件输送装置等，采用液压传动，有利于简化机床结构，提高机床自动化程度。
1.5静压支承重型机床、高速机床、高精度机床上的轴承、导轨、丝杆螺母机构等处采用液压静支承后，可以提高工作平稳性和运动精度。
2、液压传动技术在工程机械行走驱动中的应用
行走驱动系统是工程机械的重要组成部分。与工作系统相比，行走驱动系统不仅需要传输更大的功率，要求器件具有更高的效率和更长的寿命，还希望在变速调速、差速、改变输出轴旋转方向及反向传输动力等方面具有良好的能力。于是，采用何种传动方式，如何更好地满足各种工程机械行走驱动的需要，-直是工程机械行业所要面对的课题。尤其是近年来，随着我国交通、能源等基础设施建设进程的快速发展，建筑施工和资源开发规模不断扩大，工程机械在市场需求大大增强的同时，更面临着作业环境更为苛刻、工沉条件更为复杂等所带来的挑战，也进一步推动着对其行走驱动系统的深入研究。
  油泵流量调节变补偿压力阀在油泵流量调节阀上加，上比例电磁铁，通过改变电流可改变其电磁力，此电磁力作用在流量调节阀上，实际上是改变了弹簧力，上面己说明油泵流量调节阀的补偿压力取决于弹簧力，改变弹簧力也就改变了补偿压力。补偿压力与电流I成直线关系。在不同的补偿压力下，供给液压作用元件的流量与阀杆行程的关系。降低△PLS，供油量减少;阀秆行程增大，流量增加比较平缓。改变控制电流能使补偿压力变化，补偿压力变化能改变去液压作用元件的流量,起调速作用,变△PLS控制能更好地适应不同作业工况的流量需要，特别是改善了精细作业微动性能;另外随着发动机转速改变，泵的流量随着变化，补偿压力也应随之改变。应当说明，补偿压力阀输出的控制油直接操纵液压泵变量油缸,而功率阀输出的控制油经补偿压力阀操纵液压泵变量油缸，因此两阀的控制关系为补偿压力阀优先。各液压作用元件液压回路动臂、斗杆和铲斗液压回路其特征为:1.在油缸的两条油路中都设有限压阀防止过载;2.动臂和斗杆的液压回路中若需要可采用再生阀杆，实现再生功能。
行走液压回路由以下阀组成:限压阀二个 分别限制行走马达两油路压力，又起补油作用;平衡阀防止下坡时超速;制动操纵阀由左右油路通过梭形阀引入压力油，在压力油作用下此阀打开，压力油通向制动器;减压阀在 压力油通向制动器的途中设减压阀，使通向制动器的油压降低，制动器承受较低压力,
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机械压力机，机械压力机用曲柄连杆或肘杆机构、凸轮机构、螺杆机构传动，工作平稳，工作精度高，操作条件好，生产率高，易于实现机械化、自动化，适于在自动线上工作。机械压力机在数量上居各类锻压机械之。冷镦机等各种线材成形自动机、平锻机、螺旋压力机、径向锻造机、大多数弯曲机、矫正机和剪切机也具有与机械压力机相似的传动机构，可以说是机械压力机的派生系列。
机械压力机工作原理
是用曲柄连杆或肘杆机构、凸轮机构、螺杆机构传动，工作平稳、工作精度高、操作条件好、生产率高，易于实现机械化、自动化，适于在自动线上工作。机械压力机在数量上居各类锻压机械之。冷镦机等各种线材成形自动机、平锻机、螺旋压力机、径向锻造机、大多数弯曲机、矫正机和剪切机等，也具有与机械压力机相似的传动机构，可以说是机械压力机的派生系列。行程是可变的，能够在任意位置发出大的工作力。液压机工作平稳，没有震动，容易达到较大的锻造深度，适合于大锻件的锻造和大规格板料的拉深、打包和压块等工作。液压机主要包括水压机和油压机。某些弯曲、矫正、剪切机械也属于液压机一类。

液压机，以高压液体（油、乳化液等）传送工作压力的锻压机械。液压机的行程是可变的，能够在任意位置发出大的工作力。液压机工作平稳，没有震动，容易达到较大的锻造深度，适合于大锻件的锻造和大规格板料的拉深、打包和压块等工作。液压机主要包括水压机和油压机。某些弯曲、矫正、剪切机械也属于液压机一类。
液压机工作原理
利用帕斯卡定律制成的利用液体压强传动的机械，种类很多。当然，用途也根据需要是多种多样的。如按传递压强的液体种类来分，有油压机和水压机两大类。水压机产生的总压力较大，常用于锻造和冲压。锻造水压机又分为模锻水压机和自由锻水压机两种。模锻水压机要用模具，而自由锻水压机不用模具。

力士乐REXROTH液压元件应用行业：注塑机、吹塑机、橡胶和发泡机、陶瓷压机、同步折弯机(折板机),、剪板机(剪床）、冲切/步冲、金属压力机、弯曲/锯床、机床、食品机械、皮革/鞋机、木材/造纸机械、钢铁业/铸造、压铸机/挤压机、电厂、生态能源（风能-水力-太阳能）设备、油和天然气工业设备、混凝土泵、路机、钻井/开采设备、起重机、升降机/叉车、推土机、道路，隧道，水坝工程设备、压缩机、街道维修设备、模拟器/娱乐设备、卡车、铁路工程设备、航空工业设备、船舶/航海工业设备、打谷机/喷洒机、拖拉机/收割机。