Fault characteristics of hydraulic equipment in different operating stages

The maintenance of hydraulic equipment should be carried out according to different operating stages, and different operating stages of equipment have different maintenance priorities

1. The initial failure of the hydraulic equipment is loose due to vibration, poor seal quality or improper assembly caused by leakage, burrs, sand, chips and other dirt in the oil passage of the pipeline or hydraulic components fall off under the impact of the oil flow, blocking the damping hole and the oil filter, resulting in unstable pressure and speed, due to large load or poor external environment heat dissipation conditions, Make the oil temperature too high to cause leakage, resulting in pressure and speed changes

2. Hydraulic equipment operation in the middle and later stages of failure Hydraulic equipment operation to the middle stage of the lowest failure rate, the system is in the best operating state, but special attention should be paid to prevent oil pollution, in the later stage, hydraulic components due to the difference in working frequency and load, wearing parts have begun normal abnormal wear. At this stage, the failure rate is higher, leakage increases, and efficiency decreases.

3. Sudden failure The fault characteristics are sudden, without warning, such as collision, pipeline rupture, foreign body blocking the channel, seal damage, etc. Although this kind of problem is caused by accidental factors, but closely related to the quality of work, the hydraulic system in each stage of operation may occur sudden failure.

Therefore, to prevent oil pollution in the maintenance of hydraulic equipment, the top priority must be throughout the entire life cycle of the equipment, to strengthen management not to let go of any abnormal phenomenon, technical processing and make detailed records. Pay special attention to the oil change work of the new equipment, the entire hydraulic system should be comprehensively cleaned with cleaning oil before oil change, and the filter and other components should be regularly cleaned later. To timely understand the status of the equipment, find problems and provide technical guidance in time.