Technology application of dual-rail co-construction and fixed carriage

The invention relates to a technology application of a dual-rail co-construction and fixed carriage and discloses multi-track amusement equipment. According to the technology application, a suspending roller coaster is combined with a common roller coaster, and the multi-track amusement equipment can be applied to the roller coaster with the existing function and have wide functions, so that the roller coasters can simultaneously depart towards opposite directions and return to original stations at the same time by the gear operation function; different departure directions can be necessarily considered when tracks are designed, but the isometric accelerations are ensured to be the same; the height drops can be different, and the tracks have the same effects when being applied to a closed dual-rail giant wheel; carriages at an inner ring and an outer ring are at the same places of in-and-out stations, but the time is different, the diameter of the inner ring is smaller, so that the time is shorter; the diamet