International Organization for Standardization

Earth-moving machinery — Roll-over protective structures — Laboratory tests and performance requirements - Fourth Edition
 N 3471

Annotation

This International Standard specifies performance requirements for metallic roll-over protective structures (ROPS) for earth-moving machinery, as well as a consistent and reproducible means of evaluating the compliance with these requirements by laboratory testing using static loading on a representative specimen.

NOTE 1 The structure can also provide FOPS (falling-object protective structure) protection.

This International Standard is applicable to ROPS intended for the following mobile machines with seated operator as defined in ISO 6165 and with a mass greater than or equal to 700 kg:

— dozer;

— loader;

— backhoe loader;

— dumper;

— pipelayer;

— tractor section (prime mover) of a combination machine (e.g. tractor scraper, articulated frame dumper);

— grader;

— landfill compactor;

— roller;

— trencher.

This International Standard is not applicable to training seats or additional seats for operation of an attachment.

NOTE 2 It is expected that reasonable crush protection for a seat-belted operator will be provided under at least the conditions of an initial forward velocity of 0 km/h to 16 km/h on a hard clay surface of 30° maximum slope in the direction of roll, and 360° of roll about the longitudinal axis of the machine without loss of contact with the slope.