To smoothly introduce a main rope into a hoistway while preventing a twist and looseness of the main rope by fixing a guide member to guide the main rope so that a lower end part of the main rope becomes a U shape, to a guide device main body where shoes to engage with a pair of guide rails running along the hoistway are arranged on both sides.

Two guide bars 11 arranged in parallel to each other are constituted so as to be extensible and contractible in the interval direction of guide rails by having a guide bar main body 11a and an inserting part 11b inserted into this, and the two guide bars 11 are connected to each other by two connecting rods 12, and a guide device main body 17 is constituted. In this guide device main body 17, shoes 13... to engage with a pair of guide rails are arranged on both sides, and a pair of cross-sectional U-shaped rope guides 18 curving in a circular arc shape are arranged on a lower side guide bar 11 as a guide member, and when a main rope is introduced into a hoistway thereby, the main rope is guided so that a lower end part of the main rope becomes a U shape. A guide device main body 17 is raised and lowered by a raising- lowering means such as a winch.