| 摘要 |
A tire mounting and demounting machine includes a turntable that holds a lower rim portion of a wheel in a detachable state and rotating the wheel about a vertical rotation axial line, a bead guiding member that guides lower and upper bead portions of a tire to fit the lower or upper bead portion to an upper rim portion of the wheel and guides the upper bead portion of the tire, which is fitted to the upper rim portion of the wheel, to be demounted from the upper rim portion, and a bead roller having a pressing surface extending in a direction going away from the rotation axial line, that presses the upper bead portion of the tire mounted on the wheel from above by the pressing surface at a location on a downstream side from the bead guiding member in a rotating direction of the turntable.
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