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1. 发明申请

US20090293418A1 Foundation Bolt Tensioner 有权
标题翻译：基础螺栓张紧器
公开(公告)号：US20090293418A1
公开(公告)日：2009-12-03
申请号：US12475983
申请日：2009-06-01
申请人： GORDON BRITTON , DAVID HUGHES
发明人： GORDON BRITTON , DAVID HUGHES
IPC分类号： E04G21/00 , E04C5/12
CPC分类号： B25B29/02
摘要： A tensioner for tensioning foundation bolts generally used in securing large utility towers is provided. The tensioner generally comprises a hollow outer body through which the foundation bolt can extend. The lower end of the body, which is adapted to abut onto the foundation surface from which the bolt extends, is provided with an opening allowing access to a foundation nut threaded onto the foundation bolt. The upper end of the outer body slidingly receives therein an inner body with which it defines an annular hydraulic piston, the inner body being configured with a seat portion for receiving and engaging a split nut mounted to the foundation bolt. Upon providing hydraulic fluid to the tensioner, the hydraulic piston urges the split nut, engaged to the foundation bolt, upwardly, thereby tensioning the foundation bolt. The load in the bolt is then maintained by threading down the foundation nut until it abuts onto the foundation surface.
摘要翻译：提供了一种用于张紧通常用于固定大型公用事业塔的基础螺栓的张紧器。张紧器通常包括中空的外部主体，基础螺栓可以通过该外部主体延伸。主体的下端适于抵靠在螺栓延伸的基础表面上，该开口允许进入螺纹连接在基础螺栓上的基础螺母。外体的上端滑动地容纳有内部体，通过该内部限定了环形液压活塞，内部主体构造有用于接收和接合安装到基础螺栓上的分离螺母的座部。在向张紧器提供液压流体时，液压活塞向上推动与基础螺栓接合的分离螺母，从而张紧基础螺栓。然后通过向下穿过基础螺母来保持螺栓中的负载，直到其抵接到基础表面上。

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