Tire changer and method of measuring force variations

摘要

A tire changer which comprises a mounting device (18) for receiving at least a wheel rim of a wheel/tire assembly, wherein the mounting device (18) has an axis (S), a roller (26) which is able to contact a peripheral surface of the wheel/tire assembly (14) and to apply a predetermined force to the peripheral surface of the wheel/tire assembly (14), a control device (32) for controlling the predetermined force applied by the during a rotation of the wheel/tire assembly about the axis (S) of the mounting device and a sensor device (30) for measuring force variations acting between the peripheral surface of the wheel/tire assembly and the roller (26), wherein supports (20, 22) of the roller (26) and of the mounting device (18) are designed for a relative movement of the roller (26) and of the mounting device (18) towards each other along a straight line to apply the predetermined force to the peripheral surface of the wheel/tire assembly (14).

主权项

1. A tyre changer, comprising:
a mounting device for receiving at least a wheel rim of a wheel/tyre assembly, the mounting device having an axis, a roller being able to contact a peripheral surface of the wheel/tyre assembly and to apply a predetermined force to the peripheral surface of the wheel/tyre assembly, a control device for controlling the predetermined force applied by the roller during a rotation of the wheel/tyre assembly about the axis of the mounting device and a sensor device for measuring force variations acting between the peripheral surface of the wheel/tyre assembly and the roller, wherein supports of the roller and of the mounting device are designed for a relative movement of the roller and of the mounting device towards each other along a straight line to apply the predetermined force to the peripheral surface of the wheel/tyre assembly, wherein the mounting device and/or the roller are driven by a linear drive, especially by an electro mechanic drive to apply the predetermined force onto the peripheral surface of the wheel/tyre assembly, and wherein the linear drive includes self-locking mechanical means transmitting movement and connected rigidly to the mounting device and the roller to establish the locking means.