DESIGN OF TRI-STAR WHEEL ROBOT

Abstract

Stair climber as a mean of transport tool plays an important role in the life of those people who are old or disabled the stair climber can easily access many places include stairs. This project use the planetary (tri-star) wheels mechanism to actualize the motion on stairs to design a base with optimum combination of dimensions and material with parameters set for acceptable motion. The main objective of this project is to design and develop mechanism that make the disable person climb stairs without assistant. Solid work 2016 software is used to create a 3D model and analysis it to obtain the impact of the external forces act on the main items of the design and the deformation result from them. The main parameters collected and provided in the 3D model. They involved the dimensions of the stair, the holder and its component which are: height of the stair is 17cm, width of stairs is 30cm, radius of regular wheel is 24cm, distance between the center of Tri-Star wheel and the center of its wheel is 22cm and thickness of holders is 6cm that fix the wheel on its place on Tri-Star wheel. Depending on the result obtained from analysis of design, it was improved and modified to give acceptable performance.