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NB/T 11464-2023Broken-belt catcher for belt conveyor (English PDF)

带式输送机用断带抓捕装置

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Issued by

NEA

Level / Type

Industry · Recommended

Issue date

December 28, 2023

Implementation date

June 28, 2024

Scope

NB/T 11464-2023 is the English-translated version of 带式输送机用断带抓捕装置.

NB/T 11464-2023 applies to broken-belt catchers, devices that grip the belt of a belt conveyor after it breaks so that it cannot slide down. It sets classification and marking, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage.

Key performance quantities are defined: catching force, action time from the broken-belt signal to completion of the catch, and action distance, the belt travel while the catch takes place.

Hydraulic system and hose specifications, welding groove rules and noise measurement methods support the requirements. It is used for design, manufacture and inspection of catchers on conveyors in coal and non-coal mines. Issued on 28 December 2023, it has applied since 28 June 2024.

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Document preview — NB/T 11464-2023

National Standard of the People's Republic of China

ICS: 53.040.20
Classification: D 98

Issued by: National Energy Administration of the People's Republic of China

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Classification and labeling
5 Technical Requirements
6 Test methods
7 Inspection Rules
8 Marking, packaging, transportation and storage

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.

1 Scope

This document specifies the classification and marking, technical requirements, test methods and procedures of broken belt catch devices for belt conveyors (hereinafter referred to as catch devices). Methods, inspection rules, marking, packaging, transportation and storage.

This document applies to the design, manufacture and inspection of broken belt capture devices for belt conveyors used in coal mines or non-coal mines.

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 191 Pictorial markings for packaging, storage and transportation

GB/T 985.1 Recommended grooves for gas welding, arc welding, gas shielded welding and high energy beam welding

GB/T 3766 General rules and safety requirements for hydraulic transmission systems and their components

GB/T 3768 Acoustics Sound Pressure Method for Determination of Sound Power Level and Sound Energy Level of Noise Source Using a Simple Measurement of the Envelope Measurement Surface Above the Reflecting Surface Easy Method

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 3836.4 Explosive atmospheres Part 3: Equipment protected by intrinsic safety type "i"

GB/T 10111-2008 Generation of random numbers and their application in product quality sampling inspection

GB/T 13306 Labels

GB/T 13384 General technical requirements for packaging of electromechanical products

MT/T 98 Inspection specification for hoses and hose assemblies for hydraulic supports

MT/T 459 General technical requirements for hydraulic components for coal mining machinery

MT/T 776-2004 Factory inspection specification for hydraulic system assembly of coal mine machinery

MT820 Technical Specifications for Belt Conveyors for Coal Mines

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Catching force

The catch device holds the conveyor belt tightly, preventing the friction from causing the conveyor belt to slide down.

3.2 Action time

The idle time from when the capture mechanism receives the broken belt signal to when it starts to capture until it completes the capture action.

3.3 Action distance

The sliding distance of the conveyor belt when the capture mechanism is triggered to perform the capture action.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

MT820

Similar standards

NB/T 11636-2024|NB/T 11642-2024|NB/T 11462-2023|GB/T 46089.1-2025|GB/T 44970-2024|GB 50431-2020

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