Lagring av gaffelrörelse

Sammanfattning: When a reach truck moves its load sideways a sway appears in the mast. The objective of this thesis is to reduce this sway and thereby improve the load cycle time. This was done theoretically by designing new bearings for the fork carriage. Improved friction characteristics, especially lowered static friction, contributes to a lowered sway. The product development process follows the methods presented by Ulrich & Eppinger in their book Product Design and Development. The project was initiated with data gathering and function analysis which created a development roadmap for the product. The concept generation that followed ended in a slew of concepts that were evaluated together with personnel at the company. The winning concepts were developed further to a point where their function could be simulated. These simulations showed flaws in the developed concepts which resulted in a new direction for the project. A new theoretical fork carriage was to be developed alongside with a test-method used to validate using rolling element bearings in a fork carriage application. The end result is a modified fork carriage that uses rolling element bearings for sideways movement. This design has theoretically better friction properties than the original sliding bearings. The tests that were developed to validate the new design could not be performed.