As an important part of the main and auxiliary mechanism of locomotive, the safety performance of main and auxiliary link forging is very important to the normal operation of the engine. This paper will evaluate the safety performance of the main and auxiliary link forging in the main and auxiliary mechanism of the locomotive.
Safety performance requirements
Strength and stiffness: When the main and auxiliary connecting rod forgings bear the complex load of the engine, they must have sufficient strength and stiffness to prevent breakage and deformation.
Fatigue strength: In the working process of the engine, the main and auxiliary connecting rod forging will be subjected to periodic alternating loads, which has higher requirements for its fatigue strength.
Wear resistance: The main and auxiliary connecting rod forgings produce friction with adjacent parts, and good wear resistance can extend its service life, thereby ensuring the reliability of the engine.
Thermal stability: the engine generates a lot of heat during the working process, and the main and auxiliary connecting rod forging should have good thermal stability to adapt to the high temperature environment and maintain stable mechanical properties.
Security performance evaluation methods
Finite element analysis (FEA) : Through the establishment of the finite element model of the main and auxiliary connecting rod forging, the stress distribution and deformation of the forging under complex loads are simulated and analyzed to evaluate its safety performance.
Fatigue life analysis: Fatigue test or simulation analysis method is used to evaluate the fatigue life of main and auxiliary link forging under the action of alternating load, and predict its safety and reliability.
Friction and wear performance test: The friction and wear performance test of the main and auxiliary connecting rod forging is carried out to evaluate its wear resistance under different working conditions to ensure its safety during use.
Environmental adaptability assessment: Simulate the actual working conditions of the engine, carry out environmental adaptability tests on the main and auxiliary connecting rod forgings such as high temperature, high humidity and plateau, and evaluate their safety performance in various harsh environments.
Safety performance improvement measures
Material optimization: The selection of high strength, high toughness, high temperature resistance and other superior materials to improve the safety performance of the main and auxiliary connecting rod forging.
Structural design optimization: Optimize the structure of the main and auxiliary connecting rod forging, distribute the load reasonably, reduce the stress concentration, and improve its strength and stiffness.
Surface treatment: spraying, carburizing and quenching surface treatment technology is used to improve the wear resistance and corrosion resistance of the main and auxiliary connecting rod forgings and extend their service life.
Strengthen process control: strictly control the manufacturing process of the main and auxiliary connecting rod forging, ensure its mechanical properties and dimensional accuracy, and improve the pass rate of the product.
Safety monitoring and early warning system: Establish the safety monitoring and early warning system of the engine, real-time monitoring of the working status and abnormal conditions of the main and auxiliary connecting rod forging, timely detection of safety hazards and take corresponding measures.
The safety performance evaluation of main and auxiliary link forging in the main and auxiliary mechanism of locomotive is an important link to ensure the normal operation of the engine. Through the comprehensive analysis of the safety performance requirements, evaluation methods and improvement measures of the main and auxiliary connecting rod forging, it is helpful to improve its safety performance and reliability, reduce the risk of engine failure, and ensure the normal operation of the main and auxiliary mechanism of the locomotive. In the future research and development, we should further strengthen the research and evaluation of the safety performance of the main and auxiliary connecting rod forging, explore more advanced safety assurance technology, and provide strong support for the safe operation of the engine.
