公开(公告)号：US10745974B2

公开(公告)日：2020-08-18

申请号：US16098873

申请日：2017-05-04

Applicant: MHWIRTH AS

Inventor： Atle Slettene ,  Tord Aslak Aslaksen

IPC: E21B15/02 ,  E21B19/00 ,  E21B19/02 ,  E21B19/084 ,  E21B19/086 ,  E21B19/09

Abstract: A hoisting system includes a hoisting cylinder assembly which is arranged vertically. The hoisting cylinder assembly includes at least one hoisting cylinder, a lower part, and an upper part, the upper part being moveable in relation to the lower part. At least one sheave is arranged in the upper part of the hoisting cylinder assembly. A winch which includes a base is fixed in relation to the lower part. A first wire is operatively connected to the winch and extends from the winch via the at least one sheave to a yoke so as to suspend the yoke from the at least one sheave.