Overspeed safety device
    1.
    发明授权
    Overspeed safety device 有权
    超速安全装置

    公开(公告)号:US06899514B2

    公开(公告)日:2005-05-31

    申请号:US10696424

    申请日:2003-10-28

    摘要: An overspeed safety device for a pneumatic rotation motor having a stator (10) with an air inlet passage (16), a rotor (12), and a speed governor for determining a maximum speed level, and comprising a speed responsive actuator (34) connected to the rotor (12) and a valve (33) shiftable by the actuator (34) from a normally open position to a closed position so as to block or substantially restrict the air flow through the inlet passage (16) at the attainment of motor speed levels exceeding a predetermined maximum level should the speed governor malfunction, wherein the actuator (34) comprises a spring biassed contact element (48) connected to the rotor (12) and responsive to centrifugal action, and the valve (33) comprises a disc-shaped valve element (36) pivotally supported in the inlet passage (16) and maintained in its open position by one magnet (42) and in its closed position by another magnet (43).

    摘要翻译: 一种用于气动旋转电动机的超速安全装置,具有具有空气入口通道(16)的定子(10),转子(12)和用于确定最大速度水平的调速器,并且包括速度响应致动器(34) 连接到转子(12)和可由致动器(34)从常开位置移动到关闭位置的阀(33),以便阻挡或基本上限制通过入口通道(16)的气流达到 如果调速器故障,则电动机速度水平超过预定的最大水平,其中致动器(34)包括连接到转子(12)并响应于离心作用的弹簧偏置接触元件(48),并且阀(33)包括 盘形阀元件(36)枢转地支撑在入口通道(16)中并由一个磁体(42)保持在其打开位置,并且在其关闭位置由另一个磁体(43)保持。