NB/T 10741-2021Operation safety test specification for large truck in open pit coal mine (English PDF)
露天煤矿大型卡车运行安全测试规范
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Issued by
NEA
Level / Type
Industry · Recommended
Issue date
November 16, 2021
Implementation date
February 16, 2022
Scope
NB/T 10741-2021 is the English-translated version of 露天煤矿大型卡车运行安全测试规范.
NB/T 10741-2021 lays down how to run operational safety tests on large in-use trucks in open pit coal mines, the periodic counterpart to the daily checks of NB/T 10740.
It starts with the preparatory work: the test road, the state of the hoist control and drive systems, fully loaded and unloaded test trucks, tyre pressure, and the choice and fitting of test instruments.
The test clauses then cover braking performance for the service and parking brakes with their acceptance criterion, followed by component checks on the powertrain, hydraulic system, steering and fire suppression system.
It also fixes the testing interval and gives a summary table for the test report, with brake terms taken from GB/T 21152-2018. Issued on 16 November 2021, it has applied since 16 February 2022.
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Document preview — NB/T 10741-2021
National Standard of the People's Republic of China
- Classification
- D 09
Issued by: National Energy Administration of the People's Republic of China
Contents
- Preface
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Preparatory work requirements
- 4.1 Test Road
- 4.2 Truck test content and requirements
- 4.2.1 General requirements
- 4.2.2 Lift Control System
- 4.2.3 Driving system
- 4.2.4 Fully loaded test truck
- 4.2.5 Unloaded test truck
- 4.2.6 Tire pressure requirements
- 4.3 Selection and installation of test equipment
- 5 Truck Test Methods and Judgment Criteria
- 5.1 Test Requirements
- 5.2 Braking performance test
- 5.2.1 Service brake
- 5.2.2 Parking brake
- 5.2.3 Criterion of braking performance
- 5.3 Component inspection of other truck systems
- 5.3.1 General requirements
- 5.3.2 Powertrain
- 5.3.3 Hydraulic system
- 5.3.4 Steering system
- 5.3.5 Fire extinguishing system
- 5.3.6 Other requirements
- 6 Detection cycle
- Appendix A (Informative) Test Report Summary Table Reference
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.
1 Scope
This document specifies the preparatory work requirements, truck testing methods and judgment criteria, inspection measurement cycle.
This document is applicable to the safety test work of large in-use trucks in open pit coal mines.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated reference documents, Only the edition corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document document.
GB/T 21152-2018 Performance requirements and test methods for earth-moving machinery wheeled or high-speed rubber crawler braking systems
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Mining dump truck
Dump trucks with a load of 90t and above and powered by diesel engines for mines.
Note: Including electric drive mining dump trucks.
3.2 Brake system
A combination of all parts that brake and/or stop a machine.
Note: Including operating mechanism, brake transmission device, brake, if equipped with speed limiter, should also be included. [Source: GB/T 21152-2018, 3.1, with modifications]
3.3 Service brake system
The main braking system used to brake and stop the machine equipment. [Source: GB/T 21152-2018, 3.1.1]
3.4 Auxiliary braking system
A system that brakes the machine when the service brake system fails. [Source: GB/T 21152-2018, 3.1.2]
3.5 Parking brake system
A system that keeps a braked machine in place. [Source: GB/T 21152-2018, 3.1.3, with modifications]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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