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Transitions of Ceiling Lifts Between Different Types of Overhead Systems: Concept Development of a New Traverse Switch at Liko Hill-rom
2016 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This project is a master thesis in Industrial Design Engineering written during the autumn of 2015 at Luleå University of Technology and Liko Hill-rom in Alvik, Luleå. The extent of the work has been limited to the switching areas between different kind of overhead rail systems within patient handling in healthcare. The overall objective was to seek areas of improvements and to develop the switches to meet up with increased specifications. These specifications were increased due to higher demands on lift motors supporting the patients in the system. A key factor in this development was to balance the needs from the different stakeholders consisting of caretakers and caregivers but also each department of the company with its different needs and agendas.Methods used to gather relevant information in this work has been both qualitative and quantitative methods such as interviews from a variety of sources, participatory observations, benchmarking, focus groups and more. What became clear was that a lot of work had to be made in order to find common denominators among all stakeholders to make the development of the product a success. This involved taking responsibility not only for how the product should be produced, assembled, installed and finally used but also to increase the product value in the company and incorporate their design philosophy into the product. With a large increase in competition where the products do not distinguish themselves much, a value that makes the company stand out from the crowd was sought for.Results showed some common denominators among all stakeholders which made the development chose which direction to go in. Like a lot of the theory supported, the direction went for a simple, intuitive, user-friendly, easy to assemble/install product.The final concept is presented with 3D-sketches and a Prototype with all included parts described. The results presents a new kind of traverse switch, with the ability to use different rail profiles that the prior one did not offer. This makes it possible to cope with the new set requirements on higher loads affecting the system. The switch brings together all the features in a small area in comparison to the existing switch and does not require electricity in order to operate. It opens and closes locking mechanism automatically when passing the aligning switch area without making any contact between the two different pieces that the switch consist of. This is made possible with the use of powerful neodymium magnets that guides the switch into place. Magnets is also what makes the locking pins open and close when the magnets follows a track. The non-contact motions does not wear on the products and offers a smooth and quite motion. In addition to this, chosen materials, manufacturing techniques, strength calculations, magnetic forces and rough cost calculations is presented. A comparison between existing traverse switch at Liko Hill-rom and this project concept is also shown.

Place, publisher, year, edition, pages
2016. , 139 p.
Keyword [en]
Keyword [sv]
Teknik, Produktutveckling, patientlyft, neodym, magnetism, skensystem
URN: urn:nbn:se:ltu:diva-57580Local ID: e3bb43c9-3920-40c5-b245-8fc714eb3765OAI: diva2:1030968
External cooperation
Subject / course
Student thesis, at least 30 credits
Educational program
Industrial Design Engineering, master's level
Validerat; 20160405 (global_studentproject_submitter)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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Pettersson, CalleÖhlund, Robin

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