Konceptframtagning av universellt, justerbart joystickfäste för traktorer
Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesisAlternative title
Concept development of universal, adjustable joystick attachment for front end loaders (English)
Ålö AB produce and develop front end loaders for tractors in the agriculture industry. The main office for Ålö Sweden is located in Umeå and the production is placed in Brännland, Umeå. Year 2010 the company launched a new kind of loader system called Loader Control System, LCS. One new product was a joystick which is controlled by the thumb. The attachment for the joystick is based on a stiff and bendable rod, called gooseneck. The flexible Gooseneck is delivered in three different lengths: 150 mm, 300 mm, and 350 mm. Based on statistics the rigidity in the joystick attachment can wear out after the machine has been operated for a while. Especially for the two longer gooseneck models. It is caused by drivers adjustments, vibrations from the machine, and the uneven road surface.
By diagnosing the gooseneck, and a market survey, the goal is to find new solutions for the joystick attachment. It is important that concepts fullfill the same flexible characteristics as the gooseneck. This because the joystick is supposed to fit in to different tractor models with different interiors. The task is to investigate the need of a new concept for the joystick attachment, therefore there will be no prototypes.
The result from the diagnose and the survey showed that the existing gooseneck is still the preferred solution. Documented complaints and statistics about how many parts that had been distributed and selled as spare parts since the launch, showed that there was no need for a new concept. By using the shortest gooseneck model when the interior of the tractor allows it, future fatigue damages could be reduced. With the two longer models there will be a longer lever which makes the force application bigger on the attachment. An other solution is to combine the gooseneck with a ball joint, which sometimes has been used. The ball joint comes abilities to make rough adjustments for the attachment, and opportunites to remove the joystick bracket when other tools are being used. These options let the gooseneck remain in its position and therefore avoid unnecessary adjustments.
Place, publisher, year, edition, pages
, MA, 1611
IdentifiersURN: urn:nbn:se:umu:diva-122794OAI: oai:DiVA.org:umu-122794DiVA: diva2:941296
Bachelor of Science Engineering in Mechanical Engineering
Rönnbäck, Sven, Universitetslektor
Staffan, Schedin, Universitetslektor