GB/T 21152-2018Earth-moving machinery -- Wheeled or high-speed rubber-tracked machines -- Performance requirements and test procedures for brake systems (English PDF)

1 Scope

This standard specifies the service brake system, auxiliary brake system and parking brake system for wheeled and high-speed rubber crawler earthmoving machinery.

Minimum performance requirements and test methods for a uniform assessment of these brake systems.

This standard applies to the following earth moving machinery that is working on the site or on the mine or on the road.

--- Self-rubber tire type earthmoving machinery as defined in ISO 6165;

--- Self-rolling rollers and backfill compactors as defined by ISO 6165 and ISO 8811;

---Scraper defined by ISO 7133;

--- Remote wheeled or rubber tracked machine as defined by ISO 6165;

---Derived machinery for rubber tire type earthmoving machinery;

---Rubber crawler earthmoving machinery with a maximum speed of not less than 20km/h.

This standard does not apply to earth-moving machinery for walking control (see ISO 17063) or for driving speeds less than 20 km/h (see ISO 10265)

Steel or rubber crawler earthmoving machinery. Underground mining special machinery is not within the scope of this standard, but this standard passes some

Modifications and additions of braking performance, general provisions can be applied to these machines (see Appendix A).

Note. At the time of publication of this standard, there is no international standard for special machinery for underground mining.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

ISO 6014 Earth-moving machinery-Determination of groundspeed

ISO 6016 Earthmoving machine and its working equipment and components quality measurement method (Earth-movingmachinery-

Methodsofmeasuringthemassesofwholemachines,theirequipmentandcomponents)

Units and measurement accuracy of ISO 9248 earthmoving machine dimensions, performance and parameters (Earth-movingmachinery-Units

Fordimensions, performanceandcapacities, andtheirmeasurementaccuracies)

ISO 10968 Earth-moving machinery-Operator's controls

ISO 15998 Machine Control System (MCS) for earthmoving machinery applications - Performance criteria and tests for functional safety (Earth-movingmachinery-Machine-controlsystems(MCS)usingelectroniccomponents-Perform-

Ancecriteriaandtestsforfunctionalsafety)

3 Terms and definitions

The following terms and definitions apply to this document.