As a large-scale machine, marine winches are already very mature in technology and standards. In addition, EME has decades of manufacturing experience. There is no problem with the marine winches here, but the long-term use of the machinery will face environmental factors. , human factors, etc. This cannot be measured.
Based on the frequency of questions asked after comprehensive after-sales, it is found that the leakage of the sealing part of the marine winch for more than 3-5 years has become the main problem. Today, let's talk about the leakage cause and maintenance method of the sealing part of the marine pneumatic winch.
First of all, it is necessary to explain the reasons for the leakage of the sealing part of the marine pneumatic winch:
The leakage of the sealing part of the marine pneumatic winch is usually caused by the long-term looseness of the end cover bolts of the pneumatic winch.
But in fact, EME has considered this problem during the factory test. During the test, the sealing part is specially tested to prevent leakage, and the prevention method is also written into the "Marine Pneumatic Winch Manual". Today we will come. Talk about preventive measures.
1. Whether the bolts are loose and cause the leakage of the sealing part of the marine pneumatic winch
Large-scale mechanical equipment such as marine pneumatic winches will inevitably loose bolts due to rotation, vibration and other reasons during use. This is unavoidable. After the marine pneumatic winch is running, it is necessary to timely check whether the bolts of the marine pneumatic winch are loose, especially Anchor bolts.
The loose anchor bolts of the marine pneumatic winch can easily lead to safety accidents. To solve the problem of leakage of the sealing part of the marine pneumatic winch caused by the loose bolt connection, please make preparations for the daily operation of tightening the bolts before maintenance or work.
2. The oil seal of the marine pneumatic winch is damaged
The oil seal of the marine pneumatic winch will be damaged due to long-term vibration, and we can easily find the damage of the oil seal. We must pay attention to the daily maintenance and preparation before the operation. Do not let the damage of the oil seal affect the normal operation of the machine, and solve the problem. Oil seal damage is very easy. We only need to replace new oil seals in time by experienced operators or maintenance workers to solve these problems according to the "Marine Pneumatic Winch Manual".
The problem of damage to the oil seal of the marine pneumatic winch is very small, but it will directly affect the operation of the equipment. Keep the maintenance and inspection before daily operation as much as possible to avoid irreparable losses after the equipment is running.
3. The overload of the winch causes the leakage of the sealing part of the marine pneumatic winch
The long-term overload operation of the winch will cause the machine to heat up, which is very dangerous. The sealing part of the winch will leak and cause the marine pneumatic winch to stop working or cause greater danger. In summary, please use the marine pneumatic winch. Carefully and memorize the load range of the winch to avoid safety accidents caused by overloading.
4. Leakage caused by the sol state of lithium-based grease
Lithium-based grease is essential for large machinery, and is usually used for marine air winches, but in 12-hydroxystearic acid-thickened grease, there are only two crossover temperatures.
The crossover temperature (i.e. from the gel state to the gel state) is usually above 170°C, while the phase transition temperature (i.e. from the gel state to the sol state) is usually above 200°C. ,
Therefore, if the pneumatic winch is overloaded for a long time or the environmental problem causes the machine to heat up, the lithium-based grease will become a sol state, and the sol state is easily changed by leakage in various gaps of the machine, causing the marine pneumatic winch to stop working. It may be directly Cause mechanical damage, please resolutely put an end to the overload of the winch!
