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    • 3. 发明授权
    • Apparatus for servicing a reactor such as tensioning reactor vessel head
studs
    • 用于维修反应堆的装置,例如张紧反应堆容器头部螺柱
    • US5730421A
    • 1998-03-24
    • US517280
    • 1995-08-21
    • John J. WilhelmBruce R.L. CoxRichard J. Bodnar
    • John J. WilhelmBruce R.L. CoxRichard J. Bodnar
    • B23P19/06G21C13/06E21B19/00
    • G21C13/06B23P19/067Y02E30/40
    • A stud tensioner for tensioning the upright studs which secure the head to a reactor pressure vessel is suspended by a motor operated hoist from a motor operated trolley mounted on a circular rail supported above the studs. A single operator operates the motor operated hoist and motor operated trolley, and manually radially fine aligns the stud tensioner for engagement with a stud through a control handlebar. A pair of side-by-side switches adjacent a first hand grip at one end of the handlebar enable the operator to operate the trolley to move the stud tensioner left or right, while vertically aligned switches adjacent a second hand grip at the other end of the handlebar are used to operate the hoist to raise and lower the stud tensioner. Simultaneously, the operator can radially maneuver the stud tensioner by applying force through the handlebar. An adjustable mount allows the handlebar to be rotated about a horizontal pivot axis and locked into a selected angular position relative to the tensioner.
    • 用于张紧将头部固定到反应堆压力容器的竖立螺柱的螺柱张紧器由安装在支撑在螺柱上方的圆形轨道上的电动操纵的手推车悬挂。 单个操作者操作电动操作的起重机和电动机车,并且手动径向地精细地对准螺柱张紧器,以通过控制手把与螺柱啮合。 一对并排的开关与把手的一端处的第一手柄相邻,使得操作者能够操作手推车以向左或向右移动螺柱张紧器,同时垂直对齐的开关邻近第二手把手的另一端 手柄用于操作起重机以升高和降低螺柱张紧器。 同时,操作者可以通过把手上的力力来径向地操纵螺柱张紧器。 可调安装件允许把手围绕水平枢转轴线旋转并相对于张紧器锁定在选定的角位置。