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公开(公告)号：US20230211486A1
公开(公告)日：2023-07-06
申请号：US18009556
申请日：2021-06-16
发明人： Gaisheng KOH , Linda XU , Liang LU
CPC分类号： B25D17/02 , E21D21/0033 , E21D21/0053 , F16B13/002 , B25D2222/72
摘要： A setting device for a self-drilling anchor bolt of the present invention includes: a drive shaft, one end thereof having a shank for connecting to an impact tool, and another end being a setting part for pushing the self-drilling anchor bolt axially; a coupling, partially surrounding the drive shaft along an axis, and being supported on the drive shaft in such a way as to be incapable of relative rotation while being axially moveable at least locally; and a releasable locking component, disposed between the drive shaft and the coupling; in a locked position, the locking component is coupled to an extremity of an anchor rod such that the anchor rod is fed axially with rotational striking into a receiving material, and in a released position, the drive shaft strikes a sleeve to advance axially along the anchor rod and expand at an expansion part.
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公开(公告)号：US20230220863A1
公开(公告)日：2023-07-13
申请号：US18009627
申请日：2021-06-16
发明人： Gaisheng KOH , Liang LU , Linda XU
CPC分类号： F16B13/065 , F16B13/002
摘要： A self-drilling expanding anchor bolt, including a drill bit for drilling, an anchor rod connected to the drill bit, and an expanding sleeve surrounding the anchor rod, the anchor rod having an expansion cone at a first end adjoining the drill bit, having a neck region behind and contiguous with the expansion cone, and having a threaded segment at a second end of the neck region remote from the drill bit, wherein the expansion cone expands the expanding sleeve in a radial direction when the expansion cone is pulled into the expanding sleeve; a transition part is provided between the drill bit and the expansion cone of the anchor rod, the maximum diameter of the transition part being smaller than the hole diameter of a drilled hole formed by the drill bit.
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