公开(公告)号：US11827314B2

公开(公告)日：2023-11-28

申请号：US17260128

申请日：2020-02-17

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Jun Liu ,  Congcong Han ,  Xu Wang

IPC: B63B21/24 ,  B63B21/36 ,  B63B21/26

CPC classification number: B63B21/243 ,  B63B21/24 ,  B63B21/26 ,  B63B21/36 ,  B63B2021/265

Abstract: The present invention relates to a hybrid dynamically installed anchor with a folding shank and a control method to keep the verticality of the hybrid anchor during free fall in the seawater, which can be applied to the field of offshore engineering. The hybrid anchor comprises a folding-shank plate anchor, a ballast shaft, an extension rod, a plurality of rear fins, and a recovery hole from the front to the tail. The folding shank is not only useful in reducing the water and soil resistance during installation, but also beneficial in improving the directional stability of the hybrid anchor during free fall in the seawater. The re-used shaft can significantly increase the penetration depth of the folding-shank plate anchor and reduce the installation cost at the same time. The control method keeping the verticality of the hybrid anchor can improve the success rate during anchor installation.