Earth-moving machinery -- Hydraulic excavator and backhoe loader lowering control device -- Requirements and tests

Available International Standards dealing with operators protective structures require manufacturers to satisfy requests on material behaviour (i.e. ISO 3471, 3449, 10262 and 12117). Among the available options, in view of the more and more stringent constraints on pollution, contaminants production, recyclability and renewable resources, plastic materials provide a significant opportunity which is worth being exploited also on protective structures. The proposal is aimed at describing a series of tests intended to be applied to polymeric materials used in manufacturing protective structures applied to Earth Moving Machinery. The intention is to ensure, with reasonable confidence, that a material having a satisfactory behaviour at ambient temperature will maintain its performance also at low temperature, removing the need to perform a complete test at low temperature. This series of test is not intended to replace the relevant standard for testing protective structures, but rather to complement its requirements in terms of material qualification.