Method and apparatus for controlling and operating a container crane or other similar cranes
US5713477A · kind A · utility
Inventors
Key dates
| Filing date | Oct 12, 1995 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Oct 12, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C13/063
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The crane comprises a horizontal boom or other support structure having at least one rail thereon, a trolley along the rail, a rope hoist, and a load carrying device. A control system causes the driven trolley to be stopped momentarily at a first position. The control system then restarts the trolley and stops it at a second position directly over a transfer position. The control system includes an encoder for determining the total length of the pendulum of the crane and the load. The stopping of the trolley at the first position causes the load to swing forwardly into the first quarter of a pendulum cycle. The control system includes means for adjusting the distance between the first and second positions to correspond with the horizontal component traveled by the load during the first quarter of the pendulum cycle whereby the load is stopped without any residual swinging movements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.