Rack road machine is composed of a base lifting hook, handle, pressure to ratchet, Jack, rack, quick drop wheel, characterized in that the lift hook and rack which constitute the sliding fit, to handle pressure and lift hook hinged, ratchet end is fixed in the handle pressing handle, the other end is meshed with the rack, jack fixed in the lift hook, rack and the base is fixedly connected. It overcomes the shortcoming of the original road machine of large volume, heavy, generally exceeding height limit. It is composed of a base, lifting hook, a handle is pressed, a pawl, Jack, quick drop wheel etc.. The pressure handle one-way force, compared with the original technology, has the advantages of small volume, light weight, easy to carry, the whole operation process are can ensure traffic safety condition.