力士乐（REXROTH）比例方向阀，直动式 保证德国*

力士乐（REXROTH)比例方向阀，直动式 保证德国*

REXROTH力士乐比例方向阀直动式的应用

它出现对移动式液压机械整体技术水平提升具有重要意义。特别是电控先导操作、无线遥控和有线遥控操作等方面展现了其良好应用前景。 比例阀和其它器件技术进步使工程车辆挡位、转向、制动和工作装置等各种系统电气控制成为现实。一般需要位移输出机构可采用类似于比例伺服控制手动多路阀驱动器完成。电气操作具有响应快、布线灵活、可实现集成控制和与计算机接口容易等优点，现代工程机械液压阀已越来越多采用电控先导控制电液比例阀（或电液开关阀）代替手动直接操作或液压先导控制多路阀。采用电液比例阀（或电液开关阀）另一个显著优点是工程车辆上可以大大减少操作手柄个数，这使驾驶室布置简洁，能够有效降低操作复杂性，对提高作业质量和效率都具有重要实际意义<strong>REXROTH力士乐比例方向阀</strong>直动式在平常中我们都把控制比例的阀的统称为压力控制阀。比例阀有时候也简称为压力阀，主要是用来满足对执行机构提出的力或力矩的要求。比例阀里有密闭的腔，在的不同位置开有通孔，每个孔都通向不同的油管，腔中间是阀，两面是两块电磁铁，哪面的磁铁线圈通电阀体就会被吸引到哪边，通过控制阀体的移动来档住或漏出不同的排油的孔，而进油孔是常开的，液压油就会进入不同的排油管，然后通过油的压力来推动油刚的活塞，活塞又带动活塞杆，活塞竿带动机械装置动。

力士乐（REXROTH)比例方向阀，直动式 保证德国*

力士乐比例方向阀

这样通过控制电磁铁的电流就控制了机械运动。&lt;br /&gt;<strong>REXROTH力士乐比例方向阀直动式</a></strong>一般采用两端承压面积不等的差径活塞结构。比例阀不工作时，差径活塞2在弹簧3的作用下处于上极限位置。比例阀是阀内比例电磁铁输入电压信号产生相应动作，使工作阀阀芯产生位移，阀口尺寸发生改变并以此完成与输入电压成比例压力、流量输出元件。阀芯位移也可以以机械、液压或电形式进行反馈。电液比例阀具有形式种类多样、容易组成使用电气及计算机控制各种电液系统、控制精度高、安装使用灵活以及抗污染能力强等多方面优点，应用领域日益拓宽。近年研发生产比例阀和比例多路阀充分考虑到工程机械使用特点，具有先导控制、负载传感和压力补偿等功能

力士乐（REXROTH)比例方向阀，直动式 保证德国*

型号：

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力士乐（REXROTH)比例方向阀，直动式 保证德国*