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公开(公告)号：US4074890A
公开(公告)日：1978-02-21
申请号：US735780
申请日：1976-10-26
IPC分类号： B25B29/02 , G21C13/093 , E21B19/00
CPC分类号： B23P19/067 , B25B29/02 , G21C13/0936 , Y02E30/40
摘要： Hydraulic device for exerting a pre-stressing traction on bolts or pins comprises three stages, with each stage comprising a piston within a chamber. The thickness of the skirts of the piston increases from stage to stage in proportion to the pressure to which the piston of that stage is subjected during a stretching operation.
摘要翻译： 用于在螺栓或销上施加预应力牵引力的液压装置包括三个阶段，每个阶段包括室内的活塞。 活塞裙部的厚度在拉伸过程中与阶段的活塞的压力成比例地逐级增加。
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公开(公告)号：US4079914A
公开(公告)日：1978-03-21
申请号：US737582
申请日：1976-11-01
申请人： Georges Boudet , Alain Neron , Alain Jacquot
发明人： Georges Boudet , Alain Neron , Alain Jacquot
CPC分类号： B25B29/02
摘要： Device having movable jaws for gripping the shank of a pin or bolt is provided with ridges or grooves on the jaws which mate with corresponding ridges or grooves on the shank. The jaws are mounted to slide toward and away from each other and this sliding movement is induced by linkage pivotally connected to the jaws. An abutment is provided for limiting the movement of one of the jaws so that actuation of the linkage causes movement of said one jaw until it strikes the abutment followed by movement of the other jaw.
摘要翻译： 具有用于夹持销或螺栓的柄的可动爪的装置在钳口上设置有与柄上的对应的脊或槽配合的脊或凹槽。 夹爪被安装成彼此滑动并远离，并且这种滑动运动是通过枢转地连接到夹爪的连杆引起的。 提供了一个用于限制其中一个钳口的运动的支座，使得连杆的致动导致所述一个钳口的移动，直到其撞击到邻接件，随后另一个钳口的运动。
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公开(公告)号：US4266451A
公开(公告)日：1981-05-12
申请号：US5753
申请日：1979-01-23
申请人： Georges Boudet , Jean C. Desmoulins
发明人： Georges Boudet , Jean C. Desmoulins
CPC分类号： B23P19/06
摘要： Apparatus for screwing, unscrewing, and handling large bolts such as stud bolts for the cover of the core tank of a nuclear reactor. A circular guide rail is positioned above the periphery of the core tank. A main chassis is suspended from and movable along the guide rail. The main chassis includes two vertical beams and a plurality of horizontal guide beams which extend over the core tank periphery toward the interior thereof. A secondary chassis includes a number of bars which cooperate with the guide beams to permit horizontal movement of the secondary chassis in a direction substantially perpendicular to the direction of movement of the main chassis. A screwing mechanism is vertically movable on the secondary chassis and includes a gripping device for gripping the screw and a jack for compensating for the weight of the screw. A second gripping device can be included for gripping a washer.
摘要翻译： 用于拧紧，拧松和处理大型螺栓的装置，例如用于核反应堆核心罐盖的双头螺栓。 圆形导轨设置在芯槽的周边上方。 主底盘悬挂在导轨上并可沿导轨移动。 主底盘包括两个垂直梁和多个水平引导梁，其在核心油箱周边上朝向其内部延伸。 辅助底盘包括多个杆，其与导向梁配合以允许辅助底盘在与主底盘的运动方向基本垂直的方向上水平移动。 螺旋机构在辅助底盘上可垂直移动，并且包括用于夹紧螺钉的夹持装置和用于补偿螺钉重量的千斤顶。 可以包括用于夹紧垫圈的第二夹持装置。
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公开(公告)号：US4304156A
公开(公告)日：1981-12-08
申请号：US78321
申请日：1979-09-24
申请人： Georges Boudet , Pierre Gibert
发明人： Georges Boudet , Pierre Gibert
CPC分类号： B23P19/067 , B25B29/02 , Y10T29/53687
摘要： Stud bolts are threaded into the body of a nuclear reactor vessel and tenned by exerting forces on tensioning nuts located on the upper end of the studs. While the studs are under tension, a cover is attached to the vessel by tightening nuts on the studs against the cover. The tensioning nuts are applied to the studs by immobilizing the studs axially and rotationally, and rotating the tensioning nuts with a pair of driven, diametrically opposed striking rollers. External threads on the striking rollers, external threads on the nut and internal threads on the nut all have the same pitch so that the threads on the striking roller remain engaged with the external threads on the nut as the nut moves axially while being threaded onto the immobilized stud.
摘要翻译： 螺栓螺栓穿过核反应堆容器的主体并通过在位于螺柱上端的张紧螺母上施加力而张紧。 当螺柱处于紧张状态时，通过将螺柱上的螺母拧紧到盖上，将盖附接到容器。 张紧螺母通过轴向和旋转地固定螺柱而被施加到螺栓上，并且用一对驱动的直径相对的打击辊旋转张紧螺母。 打击滚子上的外螺纹，螺母上的外螺纹和螺母上的内螺纹都具有相同的螺距，使得当螺母沿轴向移动时，冲击辊上的螺纹与螺母上的外螺纹啮合 固定螺柱
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