Friends who have contacted the reducer know that the service life of the reducer is determined by the size of the external load and the internal wear rate. The surface load is too large to cause tooth fracture, shaft fracture and wear of moving parts, and the wear of moving parts will cause smooth oil film to form difficult, therefore, in the reducer has been agate first, and the use of hard tooth surface gear, improve the service life of the method is as follows:
First, it is necessary to avoid excessive external load on the parts driven by the reducer.
Two, is the reducer internal bearing or gear and other parts wear to control in a reasonable scale.
Third, it is necessary to ensure that the interior of the bearing and the meshing surface of the gear meet the hydrodynamic smooth oil film.
1 correct device reducer to avoid excessive additional force
Reducer device is necessary to meet the corresponding needs of the device, to avoid poor alignment, lack of cooperation accuracy, excessive oscillation and other reasons, resulting in large additional force (that is, add external load), and then accelerate the damage of the reducer. This kind of fault, in the early work or work, should be found in time and try to deal with, otherwise, can oscillation load and cause wear or abnormal conditions such as bearing running ring, reduce the service life of reducer.
2 timely maintenance of the driven parts and reducer, to avoid excessive load in the reducer surface
The parts driven by the reducer can suffer from excessive external load due to wear, scaling, cracks or damage to supporting bearings. Therefore, in the usual maintenance operations, targeted spot inspection and repair specifications should be formulated and implemented to avoid excessive external load, and then reduce the service life of the reducer. Such as: the reducer itself, but after five view feeling, vibration monitoring, smooth oil ferrographic analysis detection technique, such as the smooth oil, vibration, temperature, noise, etc. The monitoring, found in time of trouble or danger, timely review, correction or replacement of damaged parts, to ensure that the reducer itself operation condition fit planning requirements, to prevent or avoid excessive internal load.
3. Ensure that the interstructure between the bearing and tooth surfaces meets the hydrodynamic smooth oil film.
The formation of smooth oil film of full fluid power is the base of improving the service life of reducer. Here are the specific measures:
First, reasonable selection of smooth oil reasonable selection of smooth oil is to ensure the full and smooth key. When selecting smooth oil, the first consideration is linear velocity, limit load, operating temperature, operating environment and other factors, and the reasonable selection of smooth oil.
There is no doubt that imported reducer manufacturers introduced oil, but domestic reducer manufacturers introduced a small amount of smooth oil is unreasonable appearance. Together, when using domestic smooth oil instead of imported smooth oil, there is a situation of improper substitution. This situation is very unlucky for the use of reducer life, because in a short time (1 year), without smooth oil analysis skills, the bottom can not see the serious consequences of improper oil. Therefore, the selection of smooth oil leads to the satisfaction of the attention.
Two, to ensure the cleanliness of smooth oil
Reducer gear, bearing full fluid power smooth oil film thickness, in the reducer, smooth oil, external load has been determined, the oil film thickness is stable, mostly in a few microns to tens of microns, reducer in normal use of abrasive particles, as well as external pollutants, can damage the oil film condition, Speed up the wear of relative moving parts (this situation is very high in the wear of moving parts with high speed), together, part of the high temperature and high pressure will speed up the disintegration of smooth oil because of the bad composition of the oil film. Therefore, reducing the number of abrasive particles in the oil and improving the cleanliness of smooth oil can greatly improve the smooth parts and smoothness
Service life of oil. Example: After many experiments, SKF bearing manufacturers have deeply studied the influence of load, oil viscosity, particle pollutants and other factors on bearing life and come to the conclusion that the fatigue life of rolling bearings can be extended to 10-50 times of the original by eliminating 2-5 micron solid particles in smooth oil. Therefore, cutting or controlling the number of foreign bodies in the oil can not only reduce equipment wear, but also extend the service life of smooth oil.
The specific approach is: the new participation in smooth oil to avoid pollution; In the oil to avoid external pollutants (dust, water, etc.) into the oil; Completely clean the tank when changing oil; For important equipment or large and medium-sized reducer, you can think of adding oil filters, online filtering smooth oil; For equipment with high cleanliness demand, or equipment with inconvenient oil filter, high-precision oil filter equipment can be used to filter smooth oil.
Three, to avoid the occurrence of smooth reducer
Reducer can be dry burning due to oil leakage and lack of oil, but also due to water, dust, slurry and other entering and aggravating wear, presenting a smooth incident. Therefore, it is necessary to check the dynamic sealing point, air plug, oil level change and other conditions regularly in the spot inspection operation to prevent external pollutants from entering the reducer, and prevent poor smooth and dry burning without oil. For the reducer that is cooled by cooling water and smooth oil, or operates in open air steam and other environments, it is necessary to strengthen the inspection of smooth oil water inflow to avoid the formation of smooth trouble due to water inflow.
Four, regular monitoring of smooth oil quality, do "according to the quality of oil change"
In the smooth oil can be polluted by dust, water and other external pollutants into xiang, but also due to the addition of internal abrasive deceleration and other taste and aging decay, resulting in early oil waste, but also due to the cleanliness of the extension of a long sichuan life. Therefore, a definite oil change form can not meet the needs of each management. The sampling analysis of I1 'TL lubricating oil is carried out regularly during the machine, which is beneficial to know the quality change of smooth oil and find the smooth oil that should be abolished in time, so as to ensure the firm and smooth. For gear smooth oil, if one of the working items reaches the specifications in the table below, the new oil should be replaced.
Five, ensure that the reducer smooth oil operation in a reasonable temperature scale
Smooth oil has its suitable operating temperature, too high or too low are unlucky in smooth. Such as gear and bearing in a 50 C smooth oil work than in 3℃ smooth oil work, wear to increase 10-12 times: and oil temperature beyond 55-60℃, oil temperature every 5℃ increase, oil oxidation speed will progress twice. Therefore, the use of mineral oil smooth general reducer, a day to prevent the temperature is too low, generally higher than the pour point; Two to avoid the oil temperature is too high, the general oil temperature can not exceed 80 0C. For equipment with low oil temperature, heaters should be used. For the reducer with higher oil temperature, the control oil level should be adopted, and the cooling method such as forced heat dissipation should be adopted. Such as my company crystal slot reducer adopted the fan forced cooling.