14.设计安装阶段不注意引起的故障故障的情况:为了使闸门平稳的上下,杆侧端采用液压元件,见图14(a)。但气缸中位停止时,其位置波动较大。故障的原因:靠流体(油、空气)的流速、压缩性进行位置控制是困难的。排障方法:油路上补加先导开关,气路上补加梭阀和双向先导单向阀,就能确切定位,见图14(b)。安装双向先导单向阀是防止气缸突然上升。三位中封式阀应改为中泄武。 14. Do not pay attention to the design and installation phase failure caused the failure situation: In order to make the gate steady up and down, the rod side hydraulic components, see Figure 14 (a). However, when the cylinder stops, its position fluctuates greatly. The cause of the malfunction: the fluid (oil, air) flow rate, compressibility of the position control is difficult. Troubleshooting method: Additional pilot switch on the oil path, additional gas valve on the shuttle valve and two-way pilot check valve, you can accurately locate, see Figure 14 (b). Install the bi-directional pilot check valve to prevent the cylinder from rising abruptly. Three in the closure of the valve should be changed to the vent.