To achieve an increased tractor and agricultural machinery maximum driving speed, it is necessary to develop appropriate and efficient braking systems. There are three rough categories of requirements made to brakes: the application oriented requirement, technological ones and legal requirements. The legal requirements are of special importance since they are defining for the design and interpretation of the components as well as the complete system. The driving speed is a striking criterion for the division of tractors and work machines. Demands of the StVZO, EU 71/320/EEC and ECE 13 are shown in the paper. There is a variety of differently working braking systems being used in mobile work machines, be it dry or wet working, one disk or multiple disk brake, or drum brakes. There is also the possibility of using the hydrostatic riving drive as a service brake. Reasonable is the study of the mechanisms of dry running plate braking systems. The machinery Systems Design branch of Technical University of Berlin has done several research studies on the mechanisms of dry running brakes, the result of which are considered in the paper. When developing brakes and their choice for the application of suitable friction partners, engineers have to consider a variety of parameters influencing the friction process: environmental influences, material of the friction partners, friction surface temperature, friction power, friction work, geometry of the friction partners.
Design of braking systems in mobile working machinery - demands and mechanism
Design von Bremssystemen in mobilen Arbeitsmaschinen - Anforderungen und Mechanismen
2003
6 Seiten, 4 Bilder, 2 Tabellen, 5 Quellen
Conference paper
English
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