Friends who have contacted the reducer know that the service life of the reducer depends on the external load and the internal wear rate.Excessive load on the surface and inside of the reducer may cause tooth breakage, shaft breakage, and wear of moving parts, and wear of moving parts may make it difficult to form a smooth oil film.Therefore, when the reducer is in the first shape and uses hard-toothed gears, the method of improving its service life is as follows:
First, it is necessary to avoid excessive external loads on the components driven by the reducer.
Secondly, the wear of the internal bearings or gears of the reducer should be controlled within a reasonable range.
Third, we should try our best to ensure that the bearing interior and the gear meshing surface conform to the hydrodynamic smooth oil film.
1 Correctly install the reducer to avoid excessive force
The reducer device must meet the corresponding device requirements, so as to avoid the large additional force (that is, increase the external force) due to poor alignment, insufficient matching accuracy, excessive vibration, etc., and accelerate the damage of the reducer.reducer.Such faults should be discovered and dealt with in an early stage or during work, otherwise it will cause load vibration and cause abnormal conditions, such as accelerated wear or bearing slip rings, thereby shortening the service life of the bearing.reducer.
2 Repair the driven parts and reducer in time to avoid excessive load on the reducer.
Reducer-driven components experience excessive external loads due to worn, chipped, cracked or damaged bearings.Therefore, in daily maintenance work, it is necessary to formulate and implement targeted spot check inspection and maintenance specifications to avoid excessive external loads, thereby reducing the service life of the reducer.For example, the reducer itself can be monitored through five kinds of sensing, vibration monitoring, lubricating oil ferrite analysis and other detection methods (such as lubricating oil, vibration, temperature, noise, etc.), so that existing problems or dangers can be found in time., Check, correct or replace damaged parts in time to ensure that the operating condition of the reducer itself meets the requirements of the plan, and avoid or avoid excessive internal load.
3. Make sure that the bearing and tooth surface structure complies with the hydrodynamic smooth oil film.
The composition of the full hydrodynamic lubricating oil film is the basis for improving the service life of the reducer.Here's how:
First of all, reasonable selection of lubricating oil is the key to ensuring sufficient smoothness.When selecting lubricating oil, factors such as line speed, limit load, working temperature, and working environment should be considered first, and the lubricating oil should be selected reasonably.
There is no doubt that it is unreasonable to import the oil recommended by the reducer manufacturer, but the small amount of lubricating oil recommended by the domestic reducer manufacturer is unreasonable.At the same time, when domestic varnish is used instead of imported varnish, there are improper situations.This situation is very unfavorable to the service life of the reducer.In a short period of time (1 year), it is impossible to see the serious consequences of misuse without fluent oil analysis skills.Therefore, choosing a smooth oil should be a cause for concern.
two.Ensure oil cleanliness
The thickness of all hydrodynamic lubricating oil films for gears and reducers is also stable under the determined conditions of reducer, lubricating oil and external loads.The thickness of most oil films is between a few microns and tens of microns.Abrasive particles and external pollutants in the normal operation of the reducer will destroy the state of the oil film and accelerate the wear of related moving parts (this state is at a moving speed, high temperature and high pressure will accelerate the conversion of lubricating oil. Therefore, the abrasive particles in the oil quantity as well as improving the cleanliness of the oil can greatly improve the sliding surface parts and smoothness
oil life.For example: After many tests, SKF bearing manufacturers have thoroughly studied the impact of load, oil viscosity, particle contamination and other factors on bearing life.They concluded that by eliminating 2-5μm solid particles in lubricating oil, the fatigue life of rolling bearings can be extended to 10-50 times the original life.Therefore, reducing or controlling the amount of foreign matter in the oil can not only reduce the wear and tear of the equipment, but also prolong the service life of the smooth oil.
The specific method is as follows: The newly added glossy oil should be pollution-free.When using engine oil, external pollutants (dust, water, etc.) should be prevented from entering the engine oil; the oil tank should be thoroughly cleaned when changing oil; for important equipment or large and medium-sized reducers, you can consider installing an oil filter to filter lubricating oil online; for high cleaning requirements High-precision equipment or equipment that is inconvenient to install an oil filter, you can use high-precision oil filter equipment to filter the oil regularly.Use a smooth oil.
Three, to avoid smooth accidents of the reducer
The reducer will cause dry burning due to oil leakage, and it will cause slippery problems due to increased wear due to water, dust, mud, etc.Therefore, it is necessary to regularly check dynamic sealing points, exhaust plugs, oil level changes and other conditions during spot checks to prevent external pollutants from entering the reducer, resulting in poor lubrication and dry burning due to lack of oil.For reducers that use cooling water to cool lubricating oil or work in open-air steam, it is necessary to strengthen the inspection of lubricating oil water intake, so as to avoid lubricating problems caused by water ingress.
IV.Regularly monitor the quality of lubricating oil to achieve 'change oil by quality'
In use, lubricating oil will not only cause dust, water and other external pollutants to enter Hunan Province, but also cause aging and deterioration due to the continuous deceleration of internal abrasive particles, resulting in early failure of lubricating oil I} and poor cleanliness The increase can also prolong the life expectancy of Sichuan Province.Therefore, the specified oil change table cannot meet the needs of the design department.
