Abstract: A vehicle 3 runs three-dimensionally by first pushing up a mobile ascending track directly above and running to the terminal end of a mobile track 13, then running up to the highest position by returning and moving over to another mobile track directly above, then running down by lowering a descending track 23 to another mobile track directly below under the self-weight of the running vehicle 3.

Abstract: A vehicle 3 runs three-dimensionally by first pushing up a mobile ascending track directly above and running to the terminal end of a mobile track 13, then running up to the highest position by returning and moving over to another mobile track directly above, then running down by lowering a descending track 23 to another mobile track directly below under the self-weight of the running vehicle 3.

Abstract: A cyclone dust collector is comprised of a lower dust chamber (5) having a tangential air inlet (10) and an upper dust chamber (4) in combination with a suction device. A dividing plate separates the upper and lower dust chambers from one another. A communicating duct (2) is installed in the dividing plate (3) in such a manner to extend downward into the lower dust chamber (5), and a cyclone drum (15) is supported in such a manner to enclose the dust (2). A disk (17) is supported to vertically divide the inside of the drum (15) into a pair of upper and lower parts. The air introduced into the lower dust chamber (5) is caused to flow in a swirl in the cyclone drum (15), the dust particles in the air are separated by centrifugalization to be allowed to drop along the inside wall of the drum (15) and the separated dust particles fall onto the bottom of the cyclone drum (15) without being affected by the swirling flow.