| 摘要 |
<p>The invention relates to a hoisting winch including: a frame (1) supporting (i) a drum (2) that can be rotated about an axis ? in order to wind a cable or the like and (ii) a main drive system (5) for rotating the drum (2) in accordance with an instruction; a safety system (S) comprising a so-called hollow toothed wheel (12) rotatably secured to the drum (2) and a worm gear (13) that engages with the hollow wheel (12) and is rotated by a follower drive system; and control means designed to control the follower drive system in order to rotate the screw, allowing the rotation of the hollow wheel (12) according to the instruction for rotating the drum (2). According to the invention, the safety system (S) further includes: at least one brake disk (10) which can rotate about a rotational axis and supports the worm gear (13) and the follower drive system; and at least one brake caliper (25) which is attached to the frame (1) and includes a jaw (26) that is locked in a position in which it is clamped to the disk (10), but can be opened.</p> |
