Projeto adaptativo de um sistema de distribuição de palhiço para colheitadeira modelo TC57

Abstract

The present work seeks to develop an adaptative project of a chaff spreader for TC57 model harvester, which is obsolete in relation the use of this system. Therefore, the conception of this equipment was based on a method of project development in engineering, going from the informational project to the conceptual and conclude with the detailed project. The informational project contextualized the problem of disuniform distribution and its consequences for agribusiness and for the environment. It was also sought for information on similar equipment, its basic operation and studies with the best operating practices. In the conceptual project, it was used techniques such as Project tree, Function tree, and Analysis of Effects and Failure Modes for the Project (DFMEA) to give direction, robustness and reliability to the proposal. In the detailed project, the distributor was detailed through the Computer Aided Design (CAD) software. For some components it was applied detective controls through analytical calculation that resulted in functional validation and in a proposal for project improvement. The proposal modification of the bearing position resulted in an increase of the nominal life of approximately 1050 hours and the issue of maintainability of the system was improved. The results of shear and crushing analysis confirmed the use of a spring pin ensuring its reliability. The application of the method of project development exposed in this work resulted in an iterative guideline for the creation, development and validation of the chaff distributor project.