Diseño y construcción de un elevador de cargas móvil para la instalación de equipos de aire acondicionado en autobuses para la empresa Friostar Plus

Abstract

This project deals with the design and construction of a mobile elevator to install air conditioning equipment in buses. In the national market, mobile elevators that meet the maximum lift requirement (3 to 4 [m]) are oversized in terms of load capacity (2000 [kg] onwards). This implies a greater weight and volume, as well as a higher cost.

To define what type of elevator was going to be designed, the technical requirements were established together with the client and, from them, alternatives were proposed to fit the different needs of the end user. For the mobile elevator, the most important factors to consider are the load capacity, maximum height, weight and operator safety. The alternative selected was a scissor type lift.

Considering the working height, it was decided to build an elevator with three pairs of scissors and a manually operated hydraulic cylinder. Subsequently, a structural analysis of the elevator was carried out under different working conditions, focusing attention on the critical positions (of greater load) for each mechanical component. The elevator parts were designed for static load conditions and mechanical fatigue.

Once the design was completed, workshop and assembly drawings were developed. The elevator was built and subjected to a test protocol to ensure its operation and safety. The results obtained met the user's requirements.