To smoothly and surely perform a push driving in a friction drive conveying device in which a load bar 5 for friction driving which has a horizontal folded joint part 28 at the intermediate position and a travelling body 1 having a plurality of trolleys 3a which support the load bar 5 are pushed and driven through the load bar 5.

Guide rollers 29a, 29b rotatable about a vertical axis (vertical shaft 20) are installed at or near the folded joint part 28 of the load bar 5 of the traveling body 1 for conveyance. Guide rails 32a, 32b which stop the lateral swing of the folded joint part 28 of the load bar 5 through the guide rollers 29a, 29b are disposed in the push driving district of a traveling path.