Innovation and application of monorail crane to transport heavy powered support in soft rock large inclined gateway

According to the technical problems of the heavy powered support under the conditions of the soft rock, broken roof, high inclined complicated gateway i n the coal mines of Mid-Eastern China, a heavy flameproof diesel engine monorail locomotive equipment was imported by China Coal Xinji Energy Company Limited. In combination with the site condition, a study and innovation was conducted on the installation method of the monorail for the heavy lifting beam, layout method of the su spended chain, the suspended method and suspended tool of the monorail, and site management during the application process. It was a first time for the monorail to tr ansport the 48 t heavy hydraulic powered support and the transportation efficiency was over 50% higher than the conventional winch transportation. Thus the monorail t ransportation could successfully solve the high preparation workload, many transportation links and personnel, low transportation efficiency and low labor efficiency exi sted in the conventional withdrawing technique of the fully mechanized coal mining face and could realize the safety, high efficient and rapid installation and withdrawin g of the fully mechanized coal mining face under the complicated geological conditions.