GB/T 9769-2015Rim contour measure (English PDF)

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules.

This standard replaces GB/T 9769-2005 "rim contour detection", compared with the GB/T 9769-2005, the main technical differences are as follows.

--- Extend the application (see Chapter 1);

--- Added "rim contour size code" and the icon (see Figure 1);

--- Measuring beads phi16 of ball tape, increasing 5 ° FB-I type Nominal rim diameter code 12 and 5 ° FB-II type Nominal rim straight Diameter 12, code-named two specifications (see Table 3 and Table 4);

--- Increased ball tape measure bead mandrel corresponding to the standard design method (see 7.1.5.7,7.1.5.8);

--- Increased half drop rim, 5 ° flat rim, all sloping bottom rim contour detection methods (see Chapter 8, Chapter 9);

--- Added "valve hole detection" chapter (see Chapter 10).

The standard proposed by China Petroleum and Chemical Industry Association.

The standard tire rim by the National Standardization Technical Committee (SAC/TC19) centralized.

1 Scope

This standard specifies the terms of the rim contour, contour shape of the detection site and test items, and the ball tape, tape measure and level gauge provided Count and use.

This standard applies to the following detection rim contour shape.

5 ° drop center rim (5 ° DC), 15 ° drop center rim (15 ° DC), semi-drop rim, 5 ° flat base rim (5 ° FB), all-sloping bottom rim.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 2933 pneumatic tire and wheel rim terminology, specifications and code flags

3 Terms and Definitions

Terms and definitions GB/T 2933, as defined in applicable to this document.

4 Rim contour size code

Rim contour size code in Figure 1.