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    • 10. 发明申请
    • ELEVATOR BRAKING DEVICE
    • 电梯制动装置
    • WO2011078862A1
    • 2011-06-30
    • PCT/US2009/069392
    • 2009-12-23
    • OTIS ELEVATOR COMPANYBILLARD, JustinDRAPER, James, M.COONEY, Anthony
    • BILLARD, JustinDRAPER, James, M.COONEY, Anthony
    • B66B5/18B66B5/22B66B11/02B66B1/32
    • B66B5/22
    • An exemplary elevator braking device comprises a brake housing. A plurality of rollers are supported by the brake housing. The rollers are arranged to be positioned on opposite sides of a guiderail. The rollers are selectively moveable between a first position in which the rollers are spaced apart a first distance and a second position in which the rollers are spaced apart a second, smaller distance so that the rollers engage and roll along opposite sides of the guiderail. At least one biasing member is supported by the brake housing. The biasing member is associated with at least one of the rollers and biases the associated roller toward the other roller in the second position. A plurality of braking surfaces are supported by the brake housing. At least one braking surface is associated with each of the rollers. Each braking surface engages a periphery of the associated roller that faces the side of the guiderail. Friction between the periphery of the associated roller and the braking surface provides a stopping force.
    • 示例性电梯制动装置包括制动器壳体。 多个辊由制动器壳体支撑。 辊被布置成定位在导轨的相对侧上。 辊可选择性地在第一位置和第二位置之间移动,在该第一位置中,辊间隔开第一距离,在第二位置中,辊间隔开第二较小的距离,使得辊沿着导轨的相对侧接合和滚动。 至少一个偏置构件由制动器壳体支撑。 偏置构件与至少一个辊相关联,并且在第二位置将相关联的辊朝向另一个辊偏压。 多个制动表面由制动器壳体支撑。 至少一个制动表面与每个辊相关联。 每个制动表面接合相关辊子的面向导轨侧面的周边。 相关联的辊的周边与制动表面之间的摩擦提供了阻止力。