GB/T 21956.4-2009
GB/T 21956.4-2009 The strength testing method and accepting condition of protective structures on narrow-track wheeled agricultural and forestry tractors—Part 4:Dynamic testing method of rear mounted ROPS
Abstract
This part of GB/T 21956 specifies the dynamic test methods and acceptance conditions for rear-mounted protective devices of narrow-track wheeled tractors used in agriculture and forestry.
This part of GB/T 21956 applies to pneumatic tire tractors with two axles, where the ground clearance of the lowest points of the front and rear axles does not exceed 600 mm; for tractors equipped with larger-sized tires on the front or rear wheels, regardless of whether the wheelbase is fixed or adjustable, the minimum wheelbase should not exceed 1,150 mm; the unladen mass of the tractor (including the protective device and the maximum tires provided by the manufacturer) should be greater than 600 kg. If it is a two-way driving tractor, it should also be less than 3,000 kg.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Replaced |
| Standard Code | GB/T 21956.4-2009 |
| CCS | The driver's cab and other parts of the vehicle are separated by a partition wall. |
| ICS | Agricultural tractors and traction vehicles |
| Implement Date | 2009-10-01 |