公开(公告)号：WO2021201747A1

公开(公告)日：2021-10-07

申请号：PCT/SE2021/050261

申请日：2021-03-25

Applicant: ELME SPREADER AB

Inventor： JOSIN, Thomas

IPC: B66C1/10 ,  B66C13/06 ,  B66C13/46 ,  B66C15/06 ,  B66C1/62 ,  B66F9/18

Abstract: A spreader (24) comprises a main frame carrying container connector arrangements configured to engage with a transport container (10); a rotator enabling rotation of the main frame in relation to a crane bracket about a substantially vertical rotation axis (A2); a rotation motor configured to, responsive to a rotation control signal, operate the rotator to rotate the main frame; a rotation detector configured to detect rotation of the main frame in relation to the crane bracket; and a control system configured to, based on a discrepancy between the rotation control signal and a rotation detected by the rotation detector, generate a rotation alert signal.