NB/T 11520-2024Stepping self moving device for scraper transfer machine in underground coal mines (English PDF)

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 composition and model of the step-by-step self-propelled device for the scraper transfer machine in underground coal mines (hereinafter referred to as the step-by-step self-propelled device).

Technical requirements, inspection rules, marking, packaging, transportation and storage, and describes the corresponding test methods.

This document applies to the design, manufacture and inspection of self-propelled stepping devices.

2 Normative references

The contents of the following documents constitute 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 3683 Rubber hoses and hose assemblies for oil-based or water-based fluids, wire braided reinforced hydraulic type specification

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 4: Equipment protected by intrinsic safety type "i"

GB/T 13306 Labels

GB/T 25974.2 Hydraulic supports for coal mines Part 2: Technical requirements for columns and jacks

GB/T 25974.3 Hydraulic supports for coal mines Part 3: Hydraulic control systems and valves

GB/T 37400.3 General technical requirements for heavy machinery Part 3: Welded parts

AQ1043 Mining Product Safety Signs and Labels

MT/T 76 Emulsified oil, concentrated oil and high water content hydraulic fluid for hydraulic supports

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

MT/T 154.1 Method for compiling model numbers of electromechanical products for coal mines Part 1: Guidelines

MT209 General technical requirements for electrical and electronic products used for communication, detection and control in coal mines

MT/T 210 Basic test methods for electrical and electronic products used for communication, detection and control in coal mines

MT/T 986 Mining U-pin quick connectors and accessories

3 Terms and definitions

The following terms and definitions apply to this document.