| 摘要 |
<p>A device (1) for preventing and/or stopping rotation of a shaft (10) coupled to at least one motor, of the type comprising at least one first fixed element (2) with respect to this shaft (10), and at least one moving element (5), and means (3, 20, 21, 22, 30) to constrain said at least one moving element (5) to the shaft (10) in such a manner as to rotate integrally with this shaft (10) and at the same time be able to move between a position of friction contact with said least one fixed element (2), to allow stopping of the shaft (10), and a position of disengagement from this fixed element (2), to allow release of the shaft (10). The device advantageously provides that the means (3, 20, 21, 22, 30) to constrain said at least one moving element (5) to the shaft (10) comprise at least one link for movement of said at least one moving element (5) along a direction having at least a radial component with respect to the shaft (10).</p> |
