| 摘要 |
<p>Apparatus and methods for dismounting and mounting tires onto vehicle wheels without removing the tires and wheels from the vehicle. The apparatus (26) includes three carriages (20, 22, 24), two of which have rotating drums (32, 34) for rotating a tire. One of the carriages (24) has a pair of tire bead breaking dowels (76, 77) mounted on the carriage and operated by a power source. Tire cutting knives (84) are held in the dowels for selectively cutting up a tire (98) mounted on a wheel (100). The tire bead breaking dowels are operated to remove an old tire while the drum (34) on a rotational carriage (24) rotates the tire. The third carriage (20) includes a jack stand base (21) and a jack stand (74) to hold a vehicle in an elevated position after the drums in two of the carriages raise the tire and wheel to either remove or mount a tire on the wheel. The apparatus is movable by wheels (48, 50, 52, 54) held thereon.</p> |
