| 摘要 |
<p>The controller i.e. actuator (1), has a spring (14) mounted in a cylinder (2) and constantly stressing a piston (8) in a brake locking direction. A pressurized fluid supply unit emerges into the cylinder in a side of an end of the piston to move the piston in a brake unlocking direction. Locking units comprises a bolt (20) and an electromagnetic actuator (18) controlled by a logic controller (CAL), and lock the piston in a rest position. The locking units are movable between inactive and active positions in which the units are separated from and contact the piston, respectively.</p> |
