The brake actuator is configured to perform a braking operation, or to perform an automatic adjustment operation of an air gap between the actuator output shaft and the brake group. The brake actuator includes a conjugate ramp track containing bearing balls formed by matching ball ramp tracks of an input ball ramp and an output ball ramp. The output ball ramp is connected to the output shaft by a threaded interface to move the output shaft by rotation of the input ball ramp. The conjugate ramp track is a multi-angle ball ramp track, thereby including regions of different gains. The input ball ramp rotates in a first direction to perform a braking operation, while the input ball ramp rotates in an opposite second direction to perform an auto-adjustment operation. During the auto-adjustment operation, when the size of the air gap is greater than the operating size, the position of the output shaft is auto-adjusted to adjust the air gap within the operating size.
制动致动器被构造成执行制动操作,或者执行致动器输出轴与制动组之间的气隙的自动调节操作。制动致动器包括包含轴承滚珠的共轭坡道轨道,该共轭坡道轨道通过输入滚珠坡道和输出滚珠坡道的匹配的滚珠坡道轨道而形成。输出滚珠坡道通过螺纹接口连接到输出轴,以通过输入滚珠坡道的旋转来移动输出轴。共轭坡道轨道是多角度滚珠坡道轨道,由此包括不同增益的区域。输入滚珠坡道在第一方向上旋转以执行制动操作,而输入滚珠坡道在相反的第二方向上旋转以执行自动调节操作。在自动调节操作期间,当气隙的尺寸大于操作尺寸时,输出轴的位置被自动调节,以将气隙调节在操作尺寸内。
Multi-angle ball ramp brake actuator with automatic lash adjuster
具有自动间隙调节器的多角度滚珠坡道制动致动器
2024-07-16
Patent
Electronic Resource
Chinese
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