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首页> 外文会议>Fleet Maintenance Symposium '99, Oct 26-27, 1999 >Multi-Jackbolt Tensioners as an Alternative to Bulk Fastener Torquing
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Multi-Jackbolt Tensioners as an Alternative to Bulk Fastener Torquing

机译：多头螺栓张紧器可替代散装紧固件扭矩

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摘要

Conventional threaded fasteners like hex bolts translate rotational motion into a clamping force through the application of torque. Tightening large diameter fasteners poses a special challenge because while the strength of the fastener increases to the second power, the torque required for pre-stressing increases to the third power. Perhaps the most common design consideration that Naval Sea Systems Command (NAVSEA) has with fasteners has been maximizing accurate pre-stress of individual fasteners and minimizing the variability of pre-stress in a joint with many fasteners. Multi-Jackbolt Tensioners (MJTs) have been developed by Superbolt~(~R), Inc. to overcome both of these limitations. A variety of users have expressed interest in MJTs and several installations have already been implemented in the Fleet.
机译：传统的螺纹紧固件（例如六角螺栓）通过施加扭矩将旋转运动转换为夹紧力。拧紧大直径紧固件带来了特殊的挑战，因为虽然紧固件的强度增加到了第二次方，但预应力所需的扭矩却增加到了第三次方。海军海系统司令部（NAVSEA）对紧固件的最常见设计考虑可能是最大化单个紧固件的精确预应力，并最小化与许多紧固件的连接处的预应力变化。 Superbolt〜（R），Inc.开发了Multi-Jackbolt张紧器（MJT），以克服这两个限制。各种各样的用户已经对MJT表示了兴趣，并且舰队中已经实施了一些安装。

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