| 摘要 |
An apparatus (1) for positioning counterweights on a generic vehicle wheel mounted on a balancing machine, comprising a rod (2) which can perform a translational motion substantially parallel to the rotation axis of a balancing machine and being connected to linear position sensing means, which are functionally associated with the instruments of the balancing machine, which is provided with means for storing the reached positions. A pointer (4) is associated with the rod (2) and can be inserted in a wheel rim (5)in order to identify the correction planes. The apparatus comprises means for locking the linear movement of the rod, which are constituted by an electromagnet (12), which can slidingly engage an abutment surface (13) made of ferromagnetic material and can be activated electrically in order to lock the rod (2) in position.
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