Please use this identifier to cite or link to this item: https://hdl.handle.net/1822/8420

TitleFoldable slewing crane
Author(s)Pedrosa, Delfim Duarte Rolo
Teixeira, Patrício
Crespo, Joel
Costa, Daniel
Esteves, João Sena
KeywordsSlewing cane
Electromagnet
Switchboard
Contactor
Inverter
8051 microcontroller
Issue date2008
CitationCOSTA, M. F. [et al.], ed. lit. - “Selected Papers on Hands-on Science”. Braga : Associação Hands-on Science Network, 2008. ISBN 978-989-95336-2-2. p. 531-541.
Abstract(s)This paper describes a slewing crane with electromagnet, operated by three three-phase induction motors but powered from a single-phase power supply. A switchboard drives the motors and the electromagnet. From its seat – mounted on the crane – an operator can make the crane arm slew left or right. The electromagnet can be moved back, forward, up or down and is capable of lifting 80kg loads. Crane slewing is limited to an 180º angle, for safety reasons. Pressing an emergency button switches off all command circuits. An 8051 microcontroller-based system determines the vertical position of the electromagnet, which cannot be switched off while being on a high position, not even if the emergency button is pressed. The crane is made of iron, has a height of 3m and a length of 2,5m. Such proportions make it very suitable for science fair events.
TypeBook part
URIhttps://hdl.handle.net/1822/8420
ISBN978-989-95336-2-2
Peer-Reviewedyes
AccessOpen access
Appears in Collections:DEI - Livros e capítulos de livros

Files in This Item:
File Description SizeFormat 
FSCrane.pdfCapítulo de livro1,78 MBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID