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1·Regarding to the shortcomings existing in the emergency device of the coke pusher and by installing a hydraulic device, the upgrading of which has been performed.

对推焦车应急装置存在的问题进行改进，增加了液压装置。

2·Some problems in the hydraulic system of JT5-2 Pusher of JN50-02 coke oven in Masteel are briefly introduced. Ways to reveal the problems, the technical revamping and its results are also discussed.

简述了马钢煤焦化公司新JN50-02 型焦炉JT5-2型推焦车取门液压系统在生产过程中遇到的问题，查找问题的方法及技术改造过程和改造后的效果。

3·Once coking is completed, the doors at both ends of the oven are opened, and a pusher forces the redhot coke out onto a quenching car.

结焦完毕，焦炉两端的炉门打开，用推焦机把红热的焦炭推出，装入熄焦车。