力士乐插装式单向阀M-SR15KE30-1X

力士乐插装式单向阀M-SR15KE30-1X，武汉百士自动化设备有限公司供应产品，现货库存，原厂原装，质量保障，价格优惠；移动电话：15307180902，商务QQ：980227448，传真：027-87680708-608，联系人：雷青；欢迎新老客户咨询购买！

1、插装阀构成压力控制阀

根据插装阀的工作原理当PAA1+PBA2 >PCA3+FS时，阀芯开启，油路A、B接通。插装阀C14，当电磁阀得电时，插装阀C14的C口直接通油箱，其C口压力为零。由此可知油路A、B接通，当A口的压力大于弹簧力的时候，系统压力油回油箱，所以此插装阀起溢流阀的作用，控制油缸径油口压力。

2、插装阀构成方向控制阀

由液压动作程序表可知，同时得电,来控制主油缸上行运动。当两者同时得电时插装阀C11、C13的C口通油箱PA>FS时,A、B口直接相通，油液可从A流向B口;当只有一个电磁阀得电时，主油缸下行运动。其中C13的PA<PB,阀芯开启，油液可从B流向A。此二处插装阀起到了单向阀的作用。

3、插装阀构成流量控制阀

在阀的顶盖上有阀芯升高限位装置通过调节限位装置的位置，便可调节阀口通流截面的大小，从而调节了流量。通过调节流量，可调节主油缸的下行速度。此插装阀作节流阀。

三、

插装阀在液压系统的简单应用，通过更为复杂的组合，可以实现更多的液压阀的功能。通过组合，插装阀可作为压力控制阀(顺序阀、减压阀)、流量控制阀(单向节流阀、节流阀)、方向控制阀(调速阀、液控单向阀、两位两通换向阀等)以及复合阀。

力士乐插装式单向阀M-SR15KE30-1X

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力士乐REXROTH止回阀安装装置M-SR 52...150

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液压系统结构

液压系统由信号控制和液压动力两部分组成，信号控制部分用于驱动液压动力部分中的控制阀动作。

液压动力部分采用回路图方式表示，以表明不同功能元件之间的相互关系。液压源含有液压泵、电动机和液压辅助元件；液压控制部分含有各种控制阀，其用于控制工作油液的流量、压力和方向；执行部分含有液压缸或液压马达，其可按实际要求来选择。

组合机床动力滑台液压系统

动力滑台是组合机床的一种通用部件，在滑台上可以配置各种工艺用途的切削头。机床液压动力滑台可以实现多种不同的工作循环，其中一种比较典型的工作循环是：快进→ 一工进→二工进→死挡铁停留→快退→停止。 使液压缸差动联接以实现快速运动； 系统中采用限压式变量叶片泵供油； 用行程阀、液控顺序阀实现快进与工进的转换； 电液换向阀 使液压缸差动联接和变量泵以实现快速运动；

（1）快进 按下启动按钮，三位五通电液动换向阀5的先导电磁换向阀1YA得电，使之阀芯右移，左位进入工作状态。 用二位二通电磁换向阀实现一工进和二工进之间的速度换接。

（2）一次工作在快进行程结束，滑台上的挡铁压下行程阀。 用行程阀、液控顺序阀实现快进与工进的转换； 用二位二通电磁换向阀实现一工进和二工进之间的速度换接。

（3）第二次工作进给 为保证进给的尺寸精度，采用了死挡铁停留来限位。

（4）死挡铁停留 当动力滑台第二次工作进给终了碰上死挡铁后，液压缸停止不动，系统的压力进一步升高，达到压力继电器15的调定值时，经过时间继电器的延时，再发出电信号，使滑台退回。在时间继电器延时动作前，滑台停留在死挡块限定的位置上。

（5）快退 时间继电器发出电信号后，电液换向阀右位工作。 这时系统的压力较低，变量泵2输出流量大，动力滑台快速退回。由于活塞杆的面积大约为活塞的一半，所以动力滑台快进、快退的速度大致相等。

（6）原位停止 当动力滑台退回到原始位置时，挡块压下行程开关，电液换向阀处于中位，动力滑台停止运动，变量泵卸荷。

液压系统及液压元件介绍

一、液压系统的组成：动力部分、控制部分、执行部分、辅助装置 液压泵；用以将机械能转化为液体的压力能，有时也将蓄能器作为紧急或辅助动力源

各类压力、流量、方向等控制阀；用以实现对执行元件的运动速度、方向、作用力等的控制、也用于实现过载保护、程序控制等

液压缸、液压马达等；用以将液体压力转化为机械能

管路、蓄能器、过滤器、油箱、冷却器、加热器、压力表、流量计等

二、液压传动的优点 质量轻体积小 容易实现无级调速 易于实现过载保护 液压元件能够自动润滑 简化机构 便于实现自动化 

三、液压传动的缺点 液压元件制造精度要求高 实现定比传动困难 油液受温度的影响 不适宜远距离输送动力 油液中混入空气易影响工作性能 油液容易污染 发生故障不易检查和排除。 四、液压部件及图形符号