ISO 5700:2013 pdf download.Tractors for agriculture and forestry – Roll-over protective structures – Static test method and acceptance conditions.
ISO 5700 specifies a static test method and the acceptance conditions for roll-over
protective structures (cab or frame) of wheeled or tracked tractors for agriculture and forestry. It is applicable to tractors having at least two axles for wheels mounted with pneumatic tyres, or having tracks instead of wheels, with an unballasted tractor mass of not less than 600 kg and a minimum track width of the rear wheels greater than 1 150 mm. It is not applicable to tractors having a mass ratio (maximum permissible mass / reference mass) greater than 1,75.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 630-1:20 11, Structural steels — Part 1: General technical delivery conditions for hot-rolled products
ISO 53 53:1995, Earth-moving machinery, and tractors and machinery for agriculture and forestry — Seat index point
ASTM A370, Standard Test Methods and Definitions for Mechanical Testing of Steel Products
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
roll-over protective structure
ROPS
framework (safety cab or frame) protecting drivers of tractors for agricultural and forestry that avoids or limits risk to the driver resulting from accidental overturning during normal operation
Note 1 to entry: The ROPS is characterized by the provision of space for a clearance zone, as defined in 9.1, either inside the envelope of the structure or within a space bounded by a series of straight lines from the outer edges of the structure to any part of the tractor that might come into contact with flat ground and that is capable of supporting the tractor in that position if the tractor overturns.
3.2
unballasted tractor mass
mass of the tractor in working order with tanks and radiators full, roll-over protective structure with cladding, and any track equipment or additional front-wheel drive components required for normal use
Note 1 to entry: Not included are the operator, optional ballast weights, additional wheel equipment, special equipment and loads.
3.3
reference mass
mt
mass, not less than the unballasted mass, selected by the manufacturer for calculation of the energy inputs and crushing forces to be used in the tests
Note 1 to entry: The reference mass shall not be less than the unballasted mass and must be sufficient to ensure
the mass ratio does not exceed 1,75.
3.4
maximum permissible mass
technically permissible mass
maximum allowable equipment mass and allowable payload specified by the manufacturer
Note 1 to entry: This mass corresponds to the sum of the technically maximum possible axle loads.
3.5
mass ratio
number calculated by taking the maximum permissible mass divided by reference mass
3.6
horizontal loading test
application of a horizontal load to the rear, front and side of the roll-over protective structure.ISO 5700 pdf download.