NB/T 11451-2023 English PDF

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NB/T 11451-2023: Sieving and crushing transport device at coal mine gate
Status: Valid

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Basic data

Standard ID: NB/T 11451-2023 (NB/T11451-2023)
Description (Translated English): Sieving and crushing transport device at coal mine gate
Sector / Industry: Energy Industry Standard (Recommended)
Classification of Chinese Standard: D93
Word Count Estimation: 18,194
Date of Issue: 2023-12-28
Date of Implementation: 2024-06-28
Issuing agency(ies): National Energy Administration

NB/T 11451-2023: Sieving and crushing transport device at coal mine gate

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 73.100.99 CCSD93 Energy Industry Standards of the People's Republic of China Transfer crushing and screening device for chute Released on 2023-12-28 2024-06-28 implementation The National Energy Administration released

Table of Contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Type and model compilation 2 4.1 Type 2 4.2 Model compilation 3 5 Technical Requirements 3 5.1 Applicable conditions 3 5.2 Basic parameters 3 5.3 Basic Requirements 4 5.4 Safety requirements 4 5.5 Machine Requirements 4 5.6 Appearance requirements 5 5.7 Technical requirements for transfer units 5 5.8 Technical requirements for grid screening units 5 5.9 Technical requirements for roller screening units 5 5.10 Technical requirements for wheeled crushing units 5 5.11 Technical requirements for roller crushing unit 5 5.12 Technical requirements for main components and accessories 5 6 Test methods 6 6.1 Test conditions 6 6.2 Appearance and Dimension Inspection 6 6.3 Idle running test 6 6.4 Processing capacity determination 7 6.5 Test methods for supporting electrical equipment 7 7 Inspection Rules 7 7.1 Inspection category 7 7.2 Factory Inspection 7 7.3 Type inspection 8 8 Marking, packaging, transportation and storage 9 Appendix A (Informative) Safety factor calculation formula for round link chains for mining use10

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 for standardization documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Coal Industry Association. This document is under the jurisdiction of the Coal Industry Coal Mine Special Equipment Standardization Technical Committee. This document was drafted by. Ningxia Tiandi Benniu Industrial Group Co., Ltd., China Coal Technology and Engineering Group Taiyuan Research Institute Co., Ltd., Taiyuan Coal Science Testing Technology Co., Ltd. and China Coal Zhangjiakou Coal Mine Machinery Co., Ltd. The main drafters of this document are. Wu Lizhong, Wang Jiguo, Bu Kankan, Shi Lan, Wang Chunsheng, Wang Caijun, Zhang Peng, Tian Binyi, Liu Jinyou, Gong Wen, Wang Yimeng, Zhang Jianjun, Fan Yilong, Li Haifeng, and Liu Weili. Transfer crushing and screening device for chute

1 Scope

This document specifies the types and model compilation, technical requirements, test methods, inspection rules, markings, Packaging, transportation and storage. This document is applicable to the design, manufacture and inspection of transfer crushing and screening equipment for underground coal mine chutes.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 1184 Shape and position tolerances without tolerance values GB/T 1348 Ductile iron castings GB/T 3836.1 Explosive atmospheres Part 1.General requirements for equipment GB/T 3836.2 Explosive atmospheres Part 2.Equipment protected by flameproof enclosure "d" GB/T 3836.3 Explosive atmospheres Part 3.Equipment protected by increased safety "e" GB/T 3836.4 Explosive atmospheres Part 4.Equipment protected by intrinsic safety type "i" GB/T 5680 Austenitic manganese steel castings GB/T 9440 Forgeable iron castings GB/T 11352 Carbon steel castings for general engineering GB/T 12718 High-strength round link chain for mining GB/T 13306 Labels GB/T 24503 Round link chain drive sprockets for mining JB/T 9593.1 Technical requirements for flameproof three-phase asynchronous motors for use in coal mines Part 1.YBK3 series flameproof three-phase asynchronous motors for use in underground coal mines Three-phase asynchronous motor (frame size 80~355) MT/T 71 Open-end connecting rings for round link chains for mining MT/T 99 Flat link for round link chain for mining MT/T 113 General test methods and judgment rules for flame retardancy and antistatic properties of polymer products used in underground coal mines MT/T 148 Reducer for Scraper Conveyor MT/T 150 General technical requirements for packaging of scraper conveyors and transfer machines MT/T 154.1 Coal mine electromechanical product model compilation method Part 1.Guidelines MT/T 208 Hydraulic coupling for scraper conveyor MT/T 243 High water content flame retardant fluid for hydraulic couplings in coal mines MT/T 249 YBSD series mining flameproof double speed three-phase asynchronous motor MT/T 374 Flame retardant V-belts for coal mines MT/T 478 YBS series flameproof three-phase asynchronous motor for conveyor MT/T 661-2011 General technical requirements for electrical equipment used in underground coal mines ......

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