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Bogramp till FRED 25
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
2010 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Bowramp to FRED 25 (English)
Abstract [sv]

Fred 25 är en båt som ska vara tillgänglig för alla oavsett rörelseförmåga. Den är en 7,5 meter lång aluminiumbåt med bogramp i fören. Målet vid framtagningen av båten har varit att en ensam rullstolsburen skeppare skall kunna hantera båten helt själv. Det finns ett antal problem med båten som måste lösas. I detta projekt har fokus legat på att få fram en billig och effektiv tätning av rampen samt en låsning av rampen som går att automatisera. Dessa problem skall lösas med minimala ändringar på båtens nuvarande konstruktion. Att utveckla bogrampen med dessa krav och önskemål är möjligt, det är dock svårt att få fram optimala koncept då få eller inga ändringar kunde göras på båten. Detta leder till lösningar som motverkar de inbyggda felen istället för att bygga bort dem. Det koncept som valdes för att täta rampens nederkant bestod i en gummiduk som fästes på rampens utsida och skrovet under rampen.För att täta rampens sidor bedömdes en cliplist med rörprofil vara bäst. Cliplisten kläms fast över sargen på rampen och rörprofilen fyller ut glappet mellan ramp och skrov. Den nyframtagna låsningen av rampen bygger på samma princip som tidigare d.v.s. att flärpen fälls över två låsbultar. Tidigare har denna manöver fått göras manuellt men med det framtagna konceptet hissas rampen upp i flärpen och låses på så sätt automatiskt. Tester på Fred 25 med de modifikationer som projektet resulterat i bör göras för en fullständig utvärdering.

Abstract [en]

Fred 25 is a boat that is supposed to be accessible to everyone, regardless of mobility. It is a 7.5 m long aluminum boat with ramp at the bow. The objective in the development of the boat has been that one wheelchair bound skipper can manage the boat all by himself. There are a number of problems with the boat to be resolved. In this project the focus has been on developing an inexpensive and effective sealing of the ramp and a locking of the ramp that goes to automate. These problems must be solved with minimal changes to the boat's current design. Developing the bow ramp with these requests is absolutely possible. However, it was difficult to obtain optimal solutions in which few or no changes could be made on the boat. This leads to solutions that counteract the built-in errors rather than erase them.For sealing the bottom of the ramp, the concept chosen consisted of a rubber mat that attaches to the outside of the ramp and the hull underneath the ramp.In order to seal the sides of the ramp a tubular rubber ledge was chosen. The rubber ledge clamps over the rib of the ramp and fills the gap between the ramp and the hull. The newly developed locking for the ramp follows the same principle as before i.e. a board with holes that folds over two locking bolts. Earlier this maneuver has been done manually, but with this new solution the board is hoisted up with the ramp and folds over the bolts automatically. Tests on the boat Fred 25 with the modifications which this project has resulted in has to be made for full evaluation.

Place, publisher, year, edition, pages
2010.
Series
MMKB 2010:02 IDEB 022
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-172080OAI: oai:DiVA.org:kth-172080DiVA: diva2:845606
Available from: 2015-10-19 Created: 2015-08-12 Last updated: 2015-10-19Bibliographically approved

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