Optimization strategy of lubricating oil replacement cycle for gearbox of EMU
In the daily operation and maintenance of EMU, the replacement cycle of gearbox oil is directly related to the operating efficiency and life of the equipment. However, most of the current gearbox oil replacement follows the fixed cycle provided by the supplier, and the lack of tracking and analysis of the changes in the performance state of the lubricating oil under actual application conditions leads to a series of problems, such as waste of oil and equipment failure caused by early failure of the lubricating oil. The purpose of this paper is to discuss how to prolong the replacement cycle of gearbox lubricating oil while satisfying its performance by optimizing the strategy.
Analysis of existing problems
1. Limitations of fixed oil change cycle: The oil change cycle provided by the supplier is often based on the test data under ideal conditions, which fails to fully consider the actual operation of the EMU in different environments and different working conditions.
2. Lack of performance monitoring: The lack of real-time monitoring system to track the physical and chemical properties of lubricating oil, pollutant content and wear element content, resulting in the failure to timely detect the decline in lubricating oil performance or pollution.
3. Resource waste and equipment failure risk: too short oil change cycle will cause oil waste, and too long oil change cycle may cause equipment failure due to lubricating oil failure.
Second, optimize the strategy
1. Establish a performance monitoring system
By installing sensors and monitoring equipment, the physical and chemical properties, pollution and wear element content of gear box lubricating oil can be monitored in real time. Combined with big data analysis and mathematical model, the lubricating oil performance is predicted and evaluated to provide data support for optimizing the oil change cycle.
2. Implement dynamic oil change cycle
Dynamically adjust the lubricating oil replacement cycle according to the data of the performance monitoring system. When the lubricating oil performance approaches or reaches the preset replacement threshold, replace the lubricating oil in time to ensure that the equipment operates in the best condition. At the same time, avoid premature or late replacement, reducing resource waste and device failure risks.
3. Strengthen maintenance
The gear box is cleaned and inspected regularly to maintain its internal cleanliness and reduce the pollution of impurities and water to the lubricating oil. At the same time, the storage and transportation management of lubricating oil should be strengthened to prevent contamination or deterioration during storage and transportation.
4. Introduce scientific assessment methods
The method of physical and chemical properties decay evaluation, pollution evaluation and wear element content evaluation is used to evaluate the lubricating oil. By comparing and analyzing the results of different evaluation methods, the most reasonable oil change cycle is determined.
5. Case analysis
Taking CRH380B platform EMU as an example, through long-term tracking monitoring and data analysis, it is found that the physical and chemical properties, pollutant content and wear element content of lubricating oil meet the use requirements when used to 600,000 kilometers. Therefore, the original oil change cycle of 400,000 kilometers is extended to 600,000 kilometers, which not only ensures the normal operation of the equipment, but also reduces the waste of oil.
6. Conclusion and Prospect
It is necessary to establish a scientific performance monitoring system, implement dynamic oil change cycle and strengthen maintenance to optimize the replacement cycle of gearbox oil of EMU. By introducing a variety of evaluation methods, a comprehensive evaluation of lubricants can ensure that equipment is operating at its best, while reducing the waste of resources and the risk of equipment failure. In the future, with the continuous progress of technology and the continuous accumulation of data, the replacement cycle optimization of gearbox oil will be more accurate and efficient.
In short, optimizing the replacement cycle of EMU gearbox oil is an important way to improve the level of equipment operation and maintenance management and reduce operation and maintenance costs. Through scientific methods and effective measures, we can optimize the lubricating oil replacement cycle and provide a strong guarantee for the safe and efficient operation of EMU.
