| 摘要 |
A tire changer of a type wherein a rotatable receiving table is provided with rim-gripping appartatus for holding a rim securely to the table when the table is rotated relative to a tire mounting and/or demounting tool. At least three rim-gripping members are movable relative to a pre-determined point on the table and have flared surfaces facing the pre-determined point. A motor is provided for moving the rim engaging members toward and away from a rim received on the table and the rim engaging members are mounted for limited movement in a direction transverse to the table so that when they engage a rim, a downward force is exerted against the rim and causes the same to tightly frictionally lock against the rim supporting surface of the table to preclude relative rotation between the rim and the table during a mounting or demounting operation. Also discussed is a unique system in rotating for the table during mounting and demounting operation including a fluid cylinder having an internal-pot for regulating the rotation.
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