GB/T 30194-2013 in English

《GB/T 30194-2013农业轮胎滚动周长测试方法》由TC19（全国轮胎轮辋标准化技术委员会）归口，TC19SC1（全国轮胎轮辋标准化技术委员会汽车工农业机械轮胎轮辋分会）执行，主管部门为中国石油和化学工业联合会。
本标准规定了农业拖拉机及机械轮胎在负荷条件下测量滚动周长的试验方法。
本标准适用于新的农业拖拉机子午线或斜交驱动轮轮胎。

1 Scope

This standard specifies the test method for measuring the tyre rolling circumference of agricultural tractors and machinery under load conditions.

This standard is applicable to radial or diagonal drive wheel tyres of new agricultural tractors.

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.

GB/T 2979 Size designation, dimensions, inflation pressure and load capacity for agricultural tyres (GB/T 2979-2008, ISO 4251-1:2005, ISO 4251-2:2005, ISO 4251-4:1992, ISO 4251-5:1992, NEQ)
GB/T 3372 Rims series for tractors agricultural and forestry machines (GB/T 3372-2010, ISO 4251-3:2006, NEQ)
GB/T 6326 Tyre terms and definitions (GB/T 6326-2005, ISO 4223-1:2002, NEQ)

3 Term and definition

For the purposes of this standard, the term and definition given in GB/T 6326 and the following apply.

3.1
rolling circumference of tyre
distance that the centre of the tyre moves in one revolution of the tyre

Foreword i
1 Scope
2 Normative references
3 Term and definition
4 Principle
5 Test conditions
6 Method of test
7 Expression of results
8 Test report
9 Other test conditions
Annex A (Informative) Design guide — Agricultural tyre rolling circumference for tyres with pattern code R-1
Annex B (Informative) Agricultural tyre rolling circumference for series tyres with pattern code R-1