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JJG 1110-2023 English PDF

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JJG 1110-2023: Measuring Rulers for Difference of Wheels Set Position and of Brake Discs Set Position of the Wheelsets for Railway
Status: Valid

JJG 1110: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 1110-2023English359 Add to Cart 4 days [Need to translate] Measuring Rulers for Difference of Wheels Set Position and of Brake Discs Set Position of the Wheelsets for Railway Valid JJG 1110-2023
JJG 1110-2015English639 Add to Cart 4 days [Need to translate] Measuring Ruler for Difference of Wheels Set Position and Brake Discs Set Position of Railway Vehicles Obsolete JJG 1110-2015

Standard similar to JJG 1110-2023

JJF 1030   JJF 1033   JJG 1108   

Basic data

Standard ID JJG 1110-2023 (JJG1110-2023)
Description (Translated English) Measuring Rulers for Difference of Wheels Set Position and of Brake Discs Set Position of the Wheelsets for Railway
Sector / Industry Metrology & Measurement Industry Standard
Word Count Estimation 16,145
Date of Issue 2023-03-15
Date of Implementation 2023-09-15
Issuing agency(ies) State Administration for Market Regulation

JJG 1110-2023: Measuring Rulers for Difference of Wheels Set Position and of Brake Discs Set Position of the Wheelsets for Railway


---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.
National Metrology Verification Regulations of the People's Republic of China JJG 1110-2023 Measuring device for wheel position difference and disc position difference of railway wheel set Released on 2023-03-15 2023-09-15 Implementation Released by the State Administration for Market Regulation Railway wheel set wheel position difference, disc position difference Measuring Instrument Verification Regulations Replace JJG 1110-2015 Responsible unit: National Railway Special Measuring Instruments Metrology Technical Committee Railway Special Length Sub-Technical Committee Main drafting unit: Institute of Standards and Metrology, China Academy of Railway Sciences Group Co:, Ltd: China Railway Nanchang Bureau Group Co:, Ltd: Technical Supervision Institute China Railway Shanghai Bureau Group Co:, Ltd: Science and Technology Research Institute Participating in the drafting unit: Liuzhou Kelu Measuring Instrument Co:, Ltd: This regulation entrusts the National Railway Special Measuring Instrument Metrology Technical Committee to divide the railway special length The technical committee is responsible for explaining The main drafters of this regulation: Lu Ming (Institute of Standards and Metrology, China Academy of Railway Sciences Group Co:, Ltd:) Chen Jingjing (Technical Supervision Institute of China Railway Nanchang Bureau Group Co:, Ltd:) Wu Wenting (Science and Technology Research Institute of China Railway Shanghai Bureau Group Co:, Ltd:) Fu Jiurong (Institute of Standards and Metrology, China Academy of Railway Sciences Group Co:, Ltd:) Participating drafters: Zhong Hanping (Liuzhou Kelu Measuring Instrument Co:, Ltd:)

Table of contents

Introduction (Ⅱ) 1 Scope(1) 2 References(1) 3 Overview(1) 4 Metrological performance requirements (2) 4:1 Surface Roughness(2) 4:2 Structural dimensions (2) 4:3 Indication error(2) 4:4 Repeatability(2) 5 General technical requirements (3) 5:1 Appearance(3) 5:2 Partial interactions (3) 5:3 Readout device(3) 6 Measuring Instrument Control(3) 6:1 Test conditions (3) 6:2 Verification items (3) 6:3 Verification method (4) 6:4 Processing of verification results (5) 6:5 Verification period(5) Appendix A Special Checking Fixtures for Wheel Position Difference and Disc Position Difference Measuring Device (6) Appendix B Verification Record of Wheel Position Difference and Disc Position Difference Measuring Device (9) Appendix C Test Certificate and Test Result Notification Inner Page Format (10)

Introduction

JJF1001-2011 "General Metrology Terms and Definitions", JJF1002-2010 "National Metrology Verification Regulations Compilation" "Rules", JJF1059:1-2012 "Assessment and Expression of Measurement Uncertainty" together constitute the basis for revising this regulation series specification: This regulation is based on TB/T 1362-2017 "Special measuring tools for rolling stock wheelset", TB/T 1463-2015 "Measuring tools for rolling stock Technical Conditions for Assembly of Wheelsets", TB/T 1718:2-2017 "Assembly of Wheelsets for Rolling Stock Part 2: Vehicles", TB/T 1718:3-2018 "Wheelset Assembly for Rolling Stock Part 3: EMU", for JJG 1110-2015 The "Railway Vehicle Wheelset Wheel Position Difference and Disc Position Difference Measuring Device" was revised: Compared with JJG 1110-2015, except editorial The main technical changes other than the modification are as follows: ---Increase the wheel position difference measuring device for measuring EMUs and locomotives and the disc position difference measuring device for measuring EMUs gauge; ---Increase indicator table wheel position difference, disc position difference measuring device and corresponding measurement performance requirements, standard device and verification method; ---Delete vernier wheel position difference, disc position difference measuring device and corresponding measurement performance requirements, standard device and verification method; --- Increase the structural size requirements and corresponding verification methods of wheel position difference and disc position difference measuring device; --- Modify the wheel position difference, disc position difference measuring device indication error requirements and corresponding verification methods; ---Delete the technical requirement of "parallelism of the horizontal ruler to the positioning surface of the V-shaped positioning support"; ---Modify the requirements for the straightness of the reference line of measuring instruments and inspection tools in Appendix A; ---Delete the "perpendicularity of the outer working surface of the column to the bottom surface of the base" and "the level of the two working surfaces of the column" in Appendix A line" technical requirements: The previous releases of this regulation are as follows: ---JJG 1110-2015: Verification regulations for railway wheel set wheel position difference and disc position difference measuring device

1 Scope

This regulation is applicable to the first verification and subsequent verification of the wheel position difference and disc position difference measuring device (hereinafter referred to as the measuring device) of railway wheel sets: Continuous verification and in-use inspection:

2 References

This procedure references the following documents: JJG 34 indicator (pointer type, digital display type) For dated references, only the dated version applies to this regulation; for undated references document, its latest version (including all amendments) applies to this regulation:

3 Overview

The wheel position difference measuring device is used to measure the end face of the shaft shoulder at both ends of the EMU, locomotive and vehicle wheel set and the inner side of the rim of the wheel on the same side The difference in distance between faces: The disc position difference measuring device is used to measure the distance between the shaft shoulder end surface at both ends of the wheel set of the EMU and the vehicle and the corresponding working surface of the brake disc on the same side: difference in distance: Measuring instruments are divided into two types: digital type and indicator type according to the measurement method: The structure diagram of the digital measuring instrument is shown in Figure 1, referring to See Figure 2 for a schematic view of the meter structure: Figure 1 Schematic diagram of digital measuring instrument 1- measuring head; 2- reading device; 3- horizontal ruler; 4- vertical ruler; 5- positioning surface; 6- V-shaped positioning support

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