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  • 1.
    Malmlöf, Tomas
    et al.
    University of Skövde, School of Technology and Society.
    Wiberg, Joel
    University of Skövde, School of Technology and Society.
    Utveckling av aerostatisk lyftfunktion av garagedomkrafter2013Independent thesis Basic level (university diploma), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Today's trolley jacks are difficult to move, where positioning often requires many manual movements and relatively high manual forces. In collaboration with REHOBOT Hydraulics AB, a project focused on easing the movement of trolley jacks was carried out. According to the assignment this is to be solved with the help of pneumatics that creates an air film between the jack and the floor. This means a technical solution with very low friction, which in turn enables easy manual movement of the jack without directional requirements.

    A study was conducted that examined the competing trolley jacks, noise ergonomics, quality of shop floors and aerostatic principles. Models were created to test different aerostatic principles. The information collected in the pilot study was summarized in a requirements specification. These specifications were used to support the concept development. The project’s result is based on utilizing two lift-units which can be integrated into the company's current jack designs with only a few modifications required. The lifting units' location and design gives the possibility of movement using both wheels or with aerostatic bearing.

    The result was further developed into a detail design phase. This phase considered manufacturing processes, environmental impact assessment, as well as design for assembly and disassembly. The thesis concludes with the majority of the detail design phase remaining, with a discussion of the project in general and recommendations for further development.

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