| 摘要 |
<p>A valve actuator device (1) of the type adapted to convert a reciprocating rectilinear motion into a reciprocating angular motion and vice versa in valve actuators, of the type comprising a sleeve (2) adapted to be keyed to a corresponding rotation driving shaft, a slider (4) sliding along linear guides (5), one or more forks (3) integral with the sleeve (2) for holding an element (6) extending from said slider (4) in the gap (3b) between its prongs, to generate a translational motion upon rotation of the sleeve (2) and vice versa. Three or more equally spaced rods (5) are provided for guiding the slider (4), and are arranged to define the vertices of a regular polygon with the center of application of the stem (11) or the center of gravity of the slider (4), to prevent any torque or rotation moment (4) from building up on the slider (4) as it slides on the rods (5).</p> |
