GB/T 21956.2-2015 Protective structure strength on narrow-track wheeled agricultural and forestry tractors.Testing method and acceptance condition.Part 2:Dynamic testing method of front mounted ROPS (English Version)
This part of GB/T 21956 specifies the dynamic test methods and acceptance conditions for the strength of front-mounted protective devices for agricultural and forestry narrow-track wheeled tractors. This section applies to tractors with pneumatic tires having two axles, the ground clearance of the lowest points of the front and rear axles is not more than 600mm; if the tires of the largest size are installed on the front or rear wheels, regardless of whether the track is fixed or variable Adjusted, the minimum wheelbase of the tractor is not greater than 1 150 mm; the mass of the tractor without counterweight (including the protective device and the largest tire provided by the manufacturer) is greater than 400 kg and less than 3 500 kg. The mass ratio does not exceed 1.75. The maximum use quality does not exceed 5 250 kg.
GB/T 21956.2-2015 Referenced Document
GB/T 6236 Tractors and machinery for agricultural and forestry.Seat index point
2015GB/T 21956.2-2015 Protective structure strength on narrow-track wheeled agricultural and forestry tractors.Testing method and acceptance condition.Part 2:Dynamic testing method of front mounted ROPS
2008GB/T 21956.2-2008 The strength testing method and accepting condition of protective structures on narrow-track wheeled agricultural and forestry tractors.Part 2:Dynamic testing method of front mounted ROPS