The Application Study Of Electric Contact Theory In Pantograph Slider Of Electric Locomotive

Electric contact theory is the subject that researches physical-chemical process on boundaries between conductors and conductors or conductors and ions, during which the electric contacts occur, maintain and eliminate. The study of this thesis is on the pantograph slider of locomotive, which is a typical example of the sliding electric contact theory. Based on the analysis of the regulations of the interactions between current-receiving bow and contact-net wires, and combined with demonstrations and economical cost, a new type of dual-lubricating copper base powder metallurgic slider is designed in this thesis. The alloying elements such as tin, graphite and lead etc. are added into the interior of copper base powder metallurgic slider, in which graphite and lead have the self-lubricating function, furthermore, aluminum sheath dual-lubricating structure that can improve further the effect of lubrication by combing high-strength graphite lubricating materials with the whole of metallurgic slider is adopted outside of the copper base power metallurgic slider. The designs of the new slider mainly include: structure of the slider, manufacturing method, ingredients, hardness of the slider, lubricating pieces, and sizes of the slider etc. In the end, the functions of the dual-lubricating copper base powder metallurgy slider are tested and the results prove that the design aims can be reached.