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JJG 1183-2021 English PDF

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JJG 1183-2021: Structure height gauges for Railway Frogs
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JJG 1183-2021English289 Add to Cart 3 days [Need to translate] Structure height gauges for Railway Frogs Valid JJG 1183-2021

Standard similar to JJG 1183-2021

JJG 1193   JJF 1030   JJG 1192   

Basic data

Standard ID JJG 1183-2021 (JJG1183-2021)
Description (Translated English) Structure height gauges for Railway Frogs
Sector / Industry Metrology & Measurement Industry Standard
Word Count Estimation 12,195
Issuing agency(ies) State Administration for Market Regulation

JJG 1183-2021: Structure height gauges for Railway Frogs

---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.
Structure height gauges for Railway Frogs People's Republic of China National Metrological Verification Regulations Railway frog structure height measurer Published on 2021-12-28 2022-06-28 Implementation Released by the State Administration for Market Regulation Railway frog structure height measurer Verification procedures Focal point. National Railway Special Measuring Instruments Metrology Technical Committee Railway Special Length Sub-Technical Committee Main drafting unit. Quality and Technical Supervision Institute of China Railway Shenyang Bureau Group Co., Ltd. China Railway Kunming Bureau Group Co., Ltd. Metrology Institute Institute of Standards and Metrology, China Academy of Railway Sciences Group Co., Ltd. Technical Supervision Office of China Railway Nanchang Bureau Group Co., Ltd. Participating in the drafting unit. Liuzhou Kelu Measuring Instrument Co., Ltd. This regulation entrusts the National Railway Special Measuring Instruments Metrology Technical Committee for the railway special length division technology The technical committee is responsible for explaining The main drafters of this regulation. Wang Faping (Quality and Technical Supervision Institute of China Railway Shenyang Bureau Group Co., Ltd.) Yang Liheng (Measurement Institute of China Railway Kunming Bureau Group Co., Ltd.) Tang Lexin (Quality and Technical Supervision Institute of China Railway Shenyang Bureau Group Co., Ltd.) Lu Ming (Standard Metrology Institute of China Academy of Railway Sciences Group Co., Ltd.) Chen Jingjing (Technical Supervision Office of China Railway Nanchang Bureau Group Co., Ltd.) Participating drafters. Zhong Hanping (Liuzhou Kelu Measuring Instrument Co., Ltd.)

Table of contents

Introduction (Ⅱ) 1 Scope(1) 2 Overview(1) 3 Measurement performance requirements (1) 3.1 Length of main ruler(1) 3.2 Measuring range(1) 3.3 Surface roughness of working surface (1) 3.4 Ruler marks (1) 3.5 Distance from the edge of the vernier marking surface to the marking surface of the measuring ruler (2) 3.6 Coplanarity of the positioning surfaces of the two positioning rulers (2) 3.7 Indication variation (2) 3.8 Indication error(2) 3.9 Indication repeatability(2) 3.10 Drift(2) 4 General technical requirements (2) 4.1 Appearance(2) 4.2 Interaction of each part (2) 5 Measuring Instrument Control(2) 5.1 Verification Conditions (2) 5.2 Verification items (3) 5.3 Verification method (3) 5.4 Processing of Verification Results (4) 5.5 Verification Period(4) Appendix A (Reference) Verification Record of Railway Frog Structure Height Measuring Instrument (5) Appendix B (Reference) Verification Certificate and Verification Result Notification Inner Page Format (6)

Introduction

This regulation is based on TB/T 3467-2016 "Alloy Steel Combination Frog", TB/T 447-2004 "High Manganese Steel Frog" "Technical Conditions", TG/GW115-2012 "Rules for Repair of Ballastless Track Lines of High-speed Railway" and TG/GW116- In.2013, it was compiled from the relevant requirements in the "Rules for the Repair of Ballasted Track Lines of High-speed Railway". This regulation is published for the first time. Rules for the Verification of Height Measuring Instruments for Railway Frog Structures

1 Scope

This regulation is applicable to the initial verification and subsequent verification of the height measuring device of the railway frog structure (hereinafter referred to as the measuring device). and in-use checks.

2 Overview

The measuring instrument is a special railway measuring instrument used to measure the height difference between the top surface of the frog core rail and the top surface of the wing rail. The display mode is divided into ruler type measuring instrument and digital measuring instrument. The schematic diagram of its structure is shown in Figure 1 and Figure 2. Figure 1 Ruler-type measuring device 1,5-positioning ruler;2-main ruler;3-measurement ruler;4-vernier Figure 2 Digital measuring instrument 1,5-positioning ruler; 2-main ruler; 3-measuring ruler; 4-reading device

3 Measurement performance requirements

3.1 Length of main ruler The length of the main ruler of the measuring instrument should not be less than 300mm. 3.2 Measuring range The measuring range of the measuring ruler should cover (-15~15) mm. 3.3 Surface roughness of working face The surface roughness Ra value of each working surface of the measuring instrument should not be greater than 0.8μm. 3.4 Ruler Marks For the ruler type measuring device, the marking width of the measuring ruler and the vernier is (0.12~0.25) mm, and the marking width is different.

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