Hydraulic cylinder It is an important industrial machinery. Many users will find the phenomenon of piston rod shaking in the process of use, so they think the equipment is damaged. Now let's find out why it shakes!

1. The hydraulic pressure is caused by the low working oil level of the hydraulic cylinder and the air suction of the oil pump oil Cylinder piston crawls. Add oil to the specified oil level.

2. Air leakage occurs in the main oil pump suction system of the hydraulic cylinder.

3. The oil temperature of the hydraulic cylinder is too high, causing the piston support ring of the main cylinder to bite.

4. In the process of hydraulic cylinder pumping, the main overflow valve often overflows due to high load. At this time, the overload reduces the load.

5. The oil pump is hot to determine whether the oil temperature rises due to the failure of the oil pump. If the oil pump is not heated due to the low viscosity of the oil, it is necessary to disassemble and inspect the oil pump to find out the cause of the fault and eliminate it.

6. The auxiliary electrohydraulic valve and unloading valve of the hydraulic cylinder are faulty. Because their failure will shorten the unloading time of the distribution valve oil pump, which is often in high load operation. At this time, the fault of the two valves should be eliminated.

7. Of hydraulic cylinder cooler Check whether the cooling water is unobstructed and whether the inlet temperature of cooling water is too high. If yes, reduce the inlet temperature of cooling water and keep it unblocked.

Hydraulic oil leakage is a kind of fault phenomenon. In order to avoid this fault phenomenon, sealing measures have been taken on the hydraulic cylinder, and many sealing rings have been used. In order to keep a good sealing performance of the hydraulic cylinder, high-quality sealing rings are naturally necessary.

Where can I find the seal ring? The sealing ring is located between the cylinder barrel and the piston of the hydraulic cylinder; Between the cylinder barrel and the end caps on both sides; Between the piston rod and the guide sleeve; Between the piston rod and the cylinder head. Do you think the seal ring can be seen everywhere in the hydraulic cylinder? Sealing rings are such accessories, which prevent hydraulic oil leakage in all directions.

Of course, in addition to the sealing ring, the hydraulic cylinder also has other accessories that play a sealing role, such as the guide sleeve and dust ring located between the front end of the hydraulic cylinder and the piston rod. Together with the seal ring, these forms the city wall that is difficult to penetrate, so that the hydraulic oil can stay where it should be and will not leak around, affecting the normal operation of the hydraulic cylinder.

To make the city wall against hydraulic oil leakage more solid, you need "hard wall bricks", that is, high-quality sealing rings, and careful maintenance of the "city wall". The sealing ring with poor quality or serious wear can not guarantee the sealing performance at all, which is easy to lead to hydraulic oil leakage, and the hydraulic cylinder can not play its normal working performance.