Diseño y construcción de un sistema motorizado con acople central para una silla de ruedas de la Misión Manuela Espejo para el desplazamiento autónomo de personas parapléjicas en zonas urbanas.

Abstract

The present work was carried out to present an alternative and urban mobility for wheelchair users. A motorized prototype with a central coupling for a wheelchair was designed and built, in response to the mobility problem and which in the national market there are not these products and importing them has a very high cost, and in this way improve the mobility autonomy of wheelchair users. For which, the requirements of the users were identified, among the main requirements is the wheelchair model, So wheelchair of Manuela Espejo Mission was used, for being a standard model and similar to others marketed in the market, based on the required parameters, an easy-to-fit prototype was designed, with a brushless electric motor with its respective electric, fastening, mechanical and structural model, installing on the lower structure of the wheelchair. With the chosen material, the ASTM A36 structural steel prototype was built. Through a CAD software, a preliminary design of the prototype structure was conceptualized, to which different modifications were made until a satisfactory design was obtained, then with the help of a CAE software the design was validated by exposing the prototype to real parameters of operating to guarantee the reliability. It was also built through manufacturing processes commonly used nationwide such as SMAW welding for the union of the different components. Seven different tests were carried out to test the operation of the prototype, the components of the prototype were not compromised either failed in its operation and any of the tests there was no anomaly, on the other hand, the user showed conformity with the prototype. t can be concluded that the prototype can be implemented in different wheelchair models, this prototype can be used by users with mobility in their upper extremities. For this work to have greater scope, the use of lighter materials is recommended to reduce the prototype's energy consumption, as well as consider the design and construction of wheelchair support with inclined bars.