WHEEL INSTALLING STRUCTURE

PROBLEM TO BE SOLVED: To provide a wheel installing structure for easily and quickly executing replacing work of a wheel unit, without requiring a tool.SOLUTION: A wheel installing structure is provided for detachably installing a wheel unit Y having a support member 12 for rotatably supporting a wheel in an installation object member D, and attaching-detaching means 5 comprises an insertion shaft part 59 provided projected in one of the wheel unit Y and the installation object member D and having a recessed part 59a opened in a radial outer part, a cylinder body part 51 provided in the other of the wheel unit Y and the installation object member D and to which the attachment shaft part 59 is inserted, a slide member 52 fitted slidably in the vertical direction to the cylinder body part 51 and a slipping-out preventive member 55 having an engaging part 55a attached to the cylinder body part 51 and engaging with the recessed part 59a, and is switched between an installation state of being engaged with the recessed part 59a and a freely movable state in the radial direction by preventing the engaging part 55a from escaping in the radial outer direction by the slide member 52.