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Absrtact: When the gear rotates, the splashing of lubricating oil has directionality, collects lubricating oil to enter the collecting oil box, filters and precipitates through the filter screen, and then uses the principle of connector to make lubricating oil pass through the oil pipeline and the oil quantity regulating valve to enter the bearing parts which need to be filled with lubricating oil. For the bearing parts of reducer, the lubricating oil splashes into the collecting oil box. Automatically fill lubricating oil in circulation. Changing the conventional oil supply mode of reducer bearing parts is an innovative idea for the future development of reducer. This paper discusses the improvement measures for oil supply of reducer bearing parts.
I. overview
Reducer is a kind of relatively precise power transmission mechanism or variable speed machinery. It uses the speed converter of gears to reduce the turning number of motor (motor) to the desired turning number and get a larger torque. At present, the reducer is widely used in the transmission of power and motion. Its traces can be seen in almost all kinds of mechanical transmission systems, from ships, automobiles, locomotives, heavy machinery for construction, processing machines and automatic production equipment for machinery industry to the present day. Common household appliances, clocks and watches in daily life. Its application can be seen from the transmission of large power to the transmission of small load and accurate angle. In industrial application, the reducer has the function of decelerating and increasing torque. Therefore, it is widely used in speed and torque conversion equipment.
Chain drawing machine is the most basic, conventional and economical production equipment in steel pipe production and manufacturing industry. Reducer is the main component of chain drawing machine, so the safety and reliability of reducer is particularly important. It is a very important and frequent work to add lubricating oil to bearing parts in the daily maintenance and maintenance project of reducer. In view of the fact that at present, the design of reducer mostly adopts installing a suitable quantitative oil storage cup at bearing parts to complete the work of continuously filling lubricating oil, because the oil storage capacity of the oil cup is limited. Therefore, it is necessary to check and replenish the amount of lubricating oil at any time, which requires a special person on duty to check frequently and to add lubricating oil. However, in actual production, due to a series of factors such as busy production, the phenomenon of negligence of filling lubricating oil into the quantitative oil storage cup occurs from time to time, which leads to the wear and tear of the bearing parts of the reducer due to lack of oil, seriously affecting the service life and safety and stability of the reducer. In particular, replacing a set of bearings and their accessories requires huge workpiece costs and maintenance costs as well as a longer repair cycle, which seriously hinders and delays the orderly production.
2. Improvement Measures of Oil Supply for Bearing Parts of Reducer
Changing the conventional oil supply mode of reducer bearing parts is an innovative idea for the future development of reducer. Based on the large amount of lubricant stored in the reducer box, if it is guided and utilized to realize the automatic oil supply to the reducer bearing parts, the effect is extremely remarkable. According to the structure and operation of the reducer, it can be found that:
1. Because the horizontal position of the center line of the bearing parts of the reducer is always higher than that of the lubricating oil in the reducer box under normal conditions, there is a certain height difference between the two. Therefore, if the lubricating oil in the reducer box is not taken certain measures, the lubricating oil in the reducer box can not be used to feed the bearing parts of the reducer. The work of filling lubricants.
2. Because the reducer is a power transmission mechanism or transmission machinery, the gears rotate and friction with each other under high pressure, there are some mechanical impurities and metal debris in the lubricating oil of the reducer box, which is extremely disadvantageous to the precise bearings that need to reduce friction.
3. The quantification of lubricating oil for bearing parts of reducer is relatively accurate. Excessive amount of oil will not only cause unnecessary waste, but also affect the working environment of the factory. Excessive amount of oil can not meet the needs of bearing parts of reducer, and can not achieve the role of lubrication and friction reduction.
According to the structure and operation of the reducer, the analysis and discussion are made.
1. The running direction of single gear of reducer is single. The gear is immersed in lubricating oil. The lubricating oil attached to the gear surface is rotated by the gear, and the direction of splashing is also single. If the measures of collecting lubricating oil are taken in the same direction of splashing direction of lubricating oil, and the collecting oil box is increased, then the collecting oil is collected. Lubricating oil is always sufficient and continuous, which can effectively solve the problem of the source of lubricating oil for bearing parts, and no additional pressure oil pump is needed to achieve the scheme of continuous access to lubricating oil. Moreover, the position of collecting lubricating oil is flexible, and the appropriate height and position can be selected according to the need to effectively solve the problem that the horizontal position of lubricating oil in the reducer box is lower than the horizontal position of the center line of bearing parts. Solving the above obstacles can basically achieve the goal of filling bearing parts with lubricating oil in the reducer box.
2. According to the principle of connector, two or more containers connected under the liquid level are equal in height when they contain the same liquid and the pressure on the liquid surface is equal. A connector is formed by connecting the collecting oil box with the bearing parts which need to be filled with lubricating oil, so the lubricating oil in the collecting oil box will inevitably flow to the direction of the bearing parts according to the principle of the connector. If the height of the oil collecting box is set slightly higher than that of the bearing parts requiring lubricating oil, the lubricating oil in the oil collecting box will be affected by the continuous splashing of lubricating oil due to the rotation of gears. With the increase of oil storage, the environment of equal liquid level of the connector will be broken, and the lubricating oil in the pipe parts at the end of the bearing parts will spill over. Into the bearing parts, when the splashing lubricant of the rotating gear reducer continuously enters the collecting oil box, the lubricant in the end pipe of the bearing parts will also continue to spill in.
3. In view of some mechanical impurities and metal debris produced by high-pressure friction between gears and gears during the rotating process of reducer gears, filtering and cleaning measures can be taken: (1) A filter screen device is installed at the outlet of the oil collecting box. Effective preliminary filtration of the collected lubricating oil is carried out to remove slightly larger mechanical impurities and metal debris in the lubricating oil.
(2) Setting up a settling tank in the middle of the pipeline. The collected lubricating oil is filtered through a preliminary filter. Because the lubricating oil still contains fine iron chip powder, after precipitation in the sedimentation tank, all the iron chip powder will be deposited in the bottom of the sedimentation tank, thus ensuring that the lubricating oil entering the bearing parts is clean and clean.
4. In view of the abundant and large amount of oil in the collecting oil box, and the limited amount of lubricating oil needed to be filled in the bearing parts, in order to make the oil quantity of lubricating oil into the bearing parts accurate and rational, it is necessary to install the oil quantity regulating valve at the end of the bearing parts pipeline, according to the demand of the bearing parts for lubricating oil. Effective control to achieve accurate and rational oil control.
Three, conclusion
Through the improvement measures of oil supply for the bearing parts of reducer, the lubricating oil splashed by the gear running in the collecting oil box is automatically supplied to the bearing parts of reducer after being filtered. No additional power is needed to ensure that the bearing parts will not be oil-broken, thus effectively avoiding the oil shortage of the bearing parts of reducer. Wear and tear ensures the safety and reliability of the reducer. At the same time, there is no need for personnel on duty. It not only reduces the cost of production and maintenance, but also ensures the normal operation of production.
