| 摘要 |
<p>PURPOSE: An adapter type of a hydraulic tensile nut is provided to enable a bolt to be quickly fastened and increase convenience and efficiency of work. CONSTITUTION: A bolt fastening hole(12) with a first screw thread(13) is formed on the central part of a tapered upper body. A second screw thread(14) is formed on the outer side of the tapered upper body(11). A third screw thread(15a) is formed on the outer side of a lower body(15), which has smaller diameter than the tapered upper body and is integrally formed on the lower part of the tapered upper body. A cap(2) is inserted into the outer upper part of the tapered upper body. A taper(2a) corresponding to the tapered upper body is formed on the inner surface of the cap.</p> |
