Patent · US Expired

Method and device for determining a swinging motion of a load suspended from a lifting gear

US7331477B2 · kind B2 · utility

7Cited by

3References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Peter Schulte · Richmond, US
Peter Maurer · Stein, DE
Ingbert Strebel · Baiersdorf, DE

Key dates

Filing date	Mar 29, 2005
Grant date	Feb 19, 2008
Priority date	—
Expiry date	Feb 3, 2026

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB66C13/46
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

A method and a device for determining the rotary oscillation of a load suspended from a lifting gear are disclosed. The lifting gear includes a trolley equipped with a camera that can be oriented towards the load. The load includes at least two spaced apart markers, with one marker located on or near the axis of rotation, which extends in the lifting direction. A rotary oscillation of the load can be determined from the position of two markers, whereby at least one marker is recorded by the camera and its position is determined. At least at certain points in time, the rotary oscillation is determined by including a virtual position of a marker.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.