The utility model relates to a colliery is combined and is adopted the elevating conveyor annex, and in particular to elevating conveyor safety device specifically is combine and adopt caving coal working face elevating conveyor head platform and can stretch and pass a bridge, solves present scarce climbing and stridees across the device, takes place the problem of incident when climbing, leap easily, and the scheme is: including supporting platform, supporting platform is last to be fixed with first frame plate, and first frame plate endotheca has a second frame plate, and the one end of first frame plate is fixed with anti -disengaging baffle, and the one end of the second frame plate opening on by anti -disengaging baffle stretches out, and the other end of second frame plate is fixed with limit baffle, and it has the guide slot to open on two risers of second frame plate, the guide slot is embedded to have flexible staircase, the other end of a frame plate is articulated with the one end of folding staircase. The advantage: 1, simple structure, convenient to use, 2, low in manufacturing cost, economical and practical, 3, guarantee producers' safety climbing leap elevating conveyor and does not influence the coal to circulate.