The continuous updating of mine accessories is also innumerable. The structure and performance of the mining accessories hydraulic station are also gradually improved, and the models are continuously replaced. However, the hydraulic stations are also experiencing more and more problems in operation. The pressure is insufficient and there is no pressure at all. These are some of the more difficult problems. The five main components of a hydraulic cylinder are: cylinder assembly, piston assembly, sealing device, cushioning device, and exhaust device. Today, Longli Friction Xiao Bian gave us an analysis of how to solve these problems.
First, the lack of pressure in the hydraulic station This situation I believe we will often encounter, because any hydraulic pump station in use for a long time, will be more or less the problem of insufficient pressure.
1. The hydraulic pump installed in the hydraulic station, such as the fixed vane pump, variable vane pump, variable plunger pump, internal gear pump or external gear pump, has a low rotational speed.
2. The overflow valve is damaged. In fact, this is just the same reason that the hydraulic oil just overflows the overflow valve and all of it overflows back to the mailbox. It is either repaired or replaced.
3. The surface of the hydraulic fluid in the tank is too low. According to the normal use requirements of the hydraulic system, add oil to the specified height of the fuel tank gauge when draining.
4. Hydraulic oil pumps, such as fixed vane pumps, variable vane pumps, variable piston pumps, internal gear pumps, and external gear pumps, as well as damaged cylinders or motors, have large internal leakage.
5. There is a problem with the integrated channel fast design. This is entirely a question of the level of competence of the hydraulic system designer. Good hydraulic system design engineers do not have such problems.
Second, the hydraulic station is completely without pressure The hydraulic station is completely without pressure is actually rarely seen, we come to analyze from every detail that may cause this problem.
1. The hydraulic oil pump, such as external gear pump, internal gear pump, variable piston pump, fixed vane pump or variable vane pump, is damaged and cannot absorb oil.
2. The directional control device of the fixed displacement vane pump on the hydraulic station is in the wrong position. 3. The hydraulic pump drive in the hydraulic system is broken.
4. The hydraulic oil is all spilled back to the mailbox after passing the overflow valve. This is obviously a problem with the overflow valve. It is very troublesome for the small parts of the overflow valve to be repaired and replaced directly.
5. Hydraulic oil pump does not suck in hydraulic oil. The cause is that there is no oil in the mailbox or the filter is blocked. In fact, this condition has been encountered many times. The newly purchased hydraulic pump station of the customer thinks that there is oil inside the mailbox, and then it is loaded on the machine, and then complains about the hydraulic system.
