Development of a Three Headed Mechanized Planting Device for Forestry Applications
Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
A need to stabilize the reforestation of Swedish forests has given the mechanical planting machines an increased importance for the Swedish forest industry. The early machines and devices suffered from lack of reliability, while the newer machines used today suffer from lack of productivity and utilize a 30 year old design. This thesis has been carried out on behalf of the Swedish University of Agricultural Sciences (SLU) in Umeå, to continue developing the technologies for mechanized planting.Benchmarking of existing devices was carried out to increase the knowledge about earlier problems and successes. The benchmarking comprises basic information about the most influential mechanical planting machines throughout the last three decades and influenced the following need finding as well as the detail design of the final device. The need finding process clarifies the problem to be solved in order to design a successful device by dissecting it to its core values and answers what the customer really needs. The need finding was based on research and interviews carried out with manufacturers and operators. Knowledge from the benchmarking and need finding worked as a base to establish a product specification.To generate a wide variety of ideas a group of people from different backgrounds was invited to creative workshops, which generated many concepts that was screened and evaluated according to the product specification. The final concept was designed in CAD software and FEM simulations were carried out on critical parts to verify the design.The result is a detailed design of a three headed planting device concept that satisfy the required properties to operate with higher productivity than existing devices on the market and serve also as the foundation for building a prototype.
Place, publisher, year, edition, pages
2015. , 66 p.
Teknik, mechanized planting, Product development
IdentifiersURN: urn:nbn:se:ltu:diva-58302Local ID: ee3d27a5-b69b-41bf-8e6e-74339b4e285fOAI: oai:DiVA.org:ltu-58302DiVA: diva2:1031690
Subject / course
Student thesis, at least 30 credits
Mechanical Engineering, master's level
Validerat; 20150605 (global_studentproject_submitter)2016-10-042016-10-04Bibliographically approved