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    • 5. 发明授权
    • Drive mechanisms for valve actuators
    • 阀门执行器的驱动机构
    • US07055795B2
    • 2006-06-06
    • US10827500
    • 2004-04-19
    • Stuart Masefield Lay
    • Stuart Masefield Lay
    • F16K31/02
    • F16D11/10F16K31/055
    • The present invention provides a motorized valve actuator wherein the drive from the motor to the output shaft of the actuator is via a worm and worm wheel or other gear mesh which is incapable of being back driven, the actuator having an alternative manual drive, the manual drive comprising a hand wheel and a clutch and lever to change from motor power drive to hand drive mode, the actuator further having an intermediate shaft between the motor and output shaft, the hand wheel being carried by or at least operatively linked to the intermediate shaft to drive the intermediate shaft, the clutch mechanism being associated with/mounted on the intermediate shaft, the intermediate shaft being positioned between the motor and the worm/worm wheel drive whereby the clutch mechanism associated with/mounted on the intermediate shaft operates substantially freely when the lever is operated to bring the actuator into hand drive mode, the output shaft torque generated by the previous motor powered run and locked into the output shaft by the non-back driving worm/worm wheel mesh not being locked into the clutch mechanism.
    • 本发明提供一种电动阀致动器,其中从电动机到致动器的输出轴的驱动通过蜗杆和蜗轮或不能被回驱动的其它齿轮啮合,致动器具有替代的手动驱动装置,手册 驱动器包括手轮和离合器和杠杆以从电动机驱动转换到手驱动模式,致动器还在电动机和输出轴之间具有中间轴,手轮由中间轴承载或至少可操作地连接到中间轴 为了驱动中间轴,离合器机构与中间轴相关联/安装在中间轴上,中间轴位于电动机和蜗轮/蜗轮驱动之间,由此与/安装在中间轴上的离合器机构基本上自由地运行,当 操作杆操作使执行器进入手动模式,由前一台电机产生的输出轴扭矩供电 通过非后驱动蜗杆/蜗轮网未被锁定到离合器机构中而运行并锁定到输出轴中。