| 摘要 |
An operating head for removing and fitting vehicle wheel tyres includes a supporting structure associable with a tyre-changing machine, a reference element associated with the structure and positionable near a section of the edge of the rim of a wheel fixed on the machine, during the removal operation of a tyre from the rim, a removal tool having a free extremity substantially hook-shaped, associated with the structure and movable between a fastening position, wherein the tool extends from the structure beyond the reference element to fit between the rim edge and the tyre and position the free extremity below the tyre bead, and an extraction position, wherein the free extremity is arranged in correspondence to the reference element to extract the tyre bead above the rim edge, and a device for positioning the tool in a disengagement position, wherein the tool is moved away with respect to the reference element.
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