Abstract:  In order to solve the procblems d complex structure , small dip angle and gentle inclined coal seamnine using multiple lifting winches , two speed winches and endlless rope winches for auxiliary transportation ,many transfer links ，cumbersome transfer , low transportation efficiency , poor safety performance , easy to fallff the roadl , overtum and other accidents , which bring great hidden dangers to saety production. It is decidedto install and use monoxail crane auxiliary transportation system.'The application practice has prowved that themonxrail crane axiliary transpriaion system hs the performance od strong mobility , fast operation speed,lar ge load capsacity , sadety and reliability ， strong flexibility and strong adaptability to the roadway. It can beused in the roadway with multiple bernds and ups and downis , can be oonmnected with nuliple roadways to real-im cantirmucus transportation, and can realize the safe transpor1ation of large equipment or persornel , which isa safe and efficient auxiliary transportation system in coal mine.

Key words: monorail, complex structure , small dip angle , gently inelined coal seam