ISO 12117-2 is the second part of the multi-series standard that establishes a consistent and reproducible means of evaluating the load-carrying characteristics of roll-overprotective structures (ROPS) for excavators under static loading and prescribes performance requirements of a representative specimen under such loading.
ISO 12117-2 applies to ROPS of hydraulic excavators as defined in ISO 6165 with a mass of over 6 t and less than 50 t. ROPS will ensure minimum crush protection space for a seat-belted operator when the machine rolls 360° about longitudinal axis of its revolving frames without losing contact with a hard clay slope of less than 30°. ROPS is to be applied where the risk of roll-over exists.
ISO 12117-2 also applies to ROPS for excavator-based or derivate excavators used in object or material handling, demolition or with attachments such as magnets, clamshell, grab or multi-claw grab.
Note1: ISO 12117-2 does not apply to excavators with elevating cab risers.
Note2: ISO 12117-2 is a part of ISO 12117 is intended to be applied to excavators having a gross operating mass up to 50 000 kg due to the limitation of the experimental and statistical data set used to derive acceptance criteria. This does not preclude the possibility of applying the procedure described in this part of ISO 12117 to excavators having larger or smaller masses, with the exclusion of excavators specially designed for mining application, where the requirements may lead to impractical design.
ISO 12117-2 on laboratory tests and performance requirements for protective structures of excavators is useful for:
It was long thought that hydraulic excavators did not overturn easily as other earth-moving machines because their large attachments support the machine bodies once they start inclining. However, in some regions of the world, accident data have shown a need for roll-over protection of hydraulic excavators. Standardization was thus needed.
ISO 12117-2 specifies laboratory tests and performance requirements for protective structures of excavators to provide added operator protection in the event of a machine rollover.
ISO 12117-2 is intended to assure operators of reasonable protection when operating in a normal condition. Risk assessment and/or job safety analysis were conducted to identify any additional risks outside normal operating conditions.
ISO 12117-2:2008
ISO 12117-2:2008/Amd 1:2016