Levantamento e identificação de símbolos gráficos utilizados para caracterizar comandos e controles de tratores agrícolas

Abstract

The main objective of the study was carrying out the review and identification of the graphic symbols used in tractors, using as a setting technical standards ABNT NBR 11379 (1990) and ISO 11684 (1995), with the purpose of verifying the level of use of the same companies manufacturers of agricultural tractors. The research was conducted through photographic record, composed the agricultural sampling 39 tractors, marketed at fairs and agricultural dealers of Rio Grande do Sul, and the data obtained were calculated in spreadsheets and tables. They were divided according to the band of power, and grouped in Light, Medium and Heavy. The main results show the lack of standardization regarding technical standards and between models of the same manufacturer. In the category of tractors light the average rate of compliance was 73.2%, where the biggest problem raised was the lack of graphic symbols on levers, controls and commands. In the Middle class results found showed a big difference between a model and the other, it was found the minimum and maximum for the index of conformity. In the category of heavy tractors of average compliance of use of standard NBR 11379 (1990) was 58%, results considered low, as they have more tools, controls and commands for other classes studied. It follows that although companies know the technical standards, use them in part, thus not helping in the process of standardization of information transmitted to the operator through the use of graphical symbols.