液压式启闭机的故障原因及维修方法：
The causes and maintenance methods of hydraulic hoist malfunctions:
1.漏油以及油压不稳：我们在长期使用启闭机之后，安全制动装置的各个油路部分以及闸阀油路间有大量的泄露现象，导致油压下降，闸阀不能及时下降。这种现象的原因是因为有的部分定送水 铜鼎铜钟 淤泥固化设备 化粪池钢模具 拱形骨架模具 保定代理记账 保定道闸
螺丝松动，将螺丝拧紧即可消除故障。而油压不稳是因为液压系统中混入了空气，我们应及时的排出空气，或者将液压调压装置线圈的电流滤波不好，线圈在上下震动，造成了油压不稳，所以我们假装电解电容器加强滤波即可解决该故障。
1.
Oil leakage and unstable oil pressure: After long-term use of the
hoist, there is a large amount of leakage in various oil circuits of the
safety braking device and between the oil circuits of the gate valve,
resulting in a decrease in oil pressure and the inability of the gate
valve to drop in time. The reason for this phenomenon is that some
screws are loose, and tightening the screws can eliminate the fault. The
unstable oil pressure is due to the air mixed in the hydraulic system,
so we should exhaust the air in time, or the current of the coil of the
hydraulic pressure regulating device is not filtered well, and the coil
vibrates up and down, causing the unstable oil pressure. Therefore, we
can solve the problem by pretending to strengthen the filtering of the
electrolytic capacitor.
2.残压过大。液压式启闭机的残压过大会导致制动器失去作用。其主要的原因是：1.电液调压装置的控制杆上的挡板距离喷嘴距离太小。2.溢流阀节孔太大。处理方法为：1.更换阳雕刻 手套生产设备 果树反光膜 北京纯水设备 保定网站制作 控制杆上挡板。2.将溢流阀节孔更换直径小一些的节流孔。
2.
Excessive residual pressure. Excessive residual pressure in hydraulic
hoists can cause the brakes to lose their function. The main reason is
that the distance between the baffle on the control rod of the
electro-hydraulic pressure regulating device and the nozzle is too
small. 2. The relief valve orifice is too large. The handling method is:
1. Replace the upper baffle of the control rod. 2. Replace the relief
valve orifice with a smaller diameter orifice.
3.二级制动油压值保压性能故障：产生此故障的原因有：液压式启闭机的油路块上的溢流阀内部有赃物卡住发信，使之关不严。单项节流截止阀开口太大，使油大量溢出。电磁换向阀内部有赃物，使得内泄漏太大。针对这一类的故障，我们可以先去下阀芯进行清理，去掉赃物，然后调节单项节流截止阀，使其开口尽量小，从而可以起到节流和补油的作用。
3.
Secondary brake oil pressure retention performance fault: The reason
for this fault is that there is dirt stuck inside the overflow valve on
the oil circuit block of the hydraulic hoist, causing it to not close
tightly. The opening of the single throttle stop valve is too large,
causing a large amount of oil to overflow. There is dirt inside the
electromagnetic directional valve, causing excessive internal leakage.
For this kind of fault, we can first clean the valve core to remove the
dirt, and then adjust the single throttle stop valve to make its opening
as small as possible, so that it can play the role of throttling and
oil supplement.