This standard specifies the performance requirements and test procedures for brake systems of underground rubber-tyred mining machines.
This standard is applicable to the following self-propelled rubber-tyred machines used for underground metal mines and other non-coal underground mines and in tunnel engineering:
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 8595 Earth-moving machinery - Operators controls
GB/T 10913 Earth-moving machinery - Determination of ground speed
GB/T 15706 Safety of machinery - General principles for design - Risk assessment and risk reduction
GB/T 21153-2007 Earth-moving machinery - Units for dimensions performance and capacities and their measurement accuracies
ISO 15998 Earth-moving machinery - Machine-control systems (MCS) using electronic components - Performance criteria and tests for functional safety
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
brake system
combination of all parts and components for braking and/or stopping the machine, including brake control, brake actuation system, brake and, if installed, retarder
3.1.1
service brake system
main brake system used to brake and stop the machine
3.1.2
secondary brake system
system that brakes the machine when the service brake system fails
3.1.3
parking brake system
system that keeps the braked machine in place, which may also be part of the secondary brake system
3.1.4
hydrostatic brake system
hydrostatic or other similar driving systems used to meet the requirements of one or more brake systems
3.1.5 Parts and components of brake system
3.1.5.1
brake control
mechanism directly operated by the driver that generates a force transmitted to the brake
GB/T 33921-2017 The following standards are cited：
