| 摘要 |
A brake for use in a work machine includes a friction disc, a ball ramp assembly, an actuator and an adjustment mechanism. The ball ramp assembly includes an inner plate, a center plate and an outer plate which are generally coaxially arranged relative to each other. The inner plate includes an outer axial face with a plurality of ball ramps, the center plate includes opposite axial faces which each have a plurality of ball ramps, and the outer plate includes an inner axial face with a plurality of ball ramps. A plurality of balls are respectively positioned within one of the plurality of balls ramps of the center plate, and also positioned within one of the ball ramps of a corresponding inner plate or outer plate. The actuator is coupled with the center plate for actuating the ball ramps. The adjustment mechanism is coupled with the inner plate or the outer plate for adjusting the ball ramp assembly relative to the friction disc.
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