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JJG 906-2015 English PDF

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JJG 906-2015: Roller Opposite Force Type Brake Testers
Status: Valid

JJG 906: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 906-2015English489 Add to Cart 4 days [Need to translate] Roller Opposite Force Type Brake Testers Valid JJG 906-2015
JJG 906-2009English599 Add to Cart 4 days [Need to translate] Roller Opposite Force Type Brake Testers Obsolete JJG 906-2009
JJG 906-1996English279 Add to Cart 3 days [Need to translate] Verification Regulation of Roller Opposite Forces Type Brake Tester Obsolete JJG 906-1996

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Basic data

Standard ID JJG 906-2015 (JJG906-2015)
Description (Translated English) Roller Opposite Force Type Brake Testers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A53
Classification of International Standard 17.1
Word Count Estimation 21,218
Date of Issue 2015-12-07
Date of Implementation 2016-06-07
Older Standard (superseded by this standard) JJG 906-2009
Quoted Standard GB 7258; GB/T 13564-2005; GB 21861
Regulation (derived from) ?AQSIQ 2015 Nian (No.148)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to drum brake reaction force test station (hereinafter referred to as brake units) of the initial verification, use and subsequent verification check.

JJG 906-2015: Roller Opposite Force Type Brake Testers

---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.
Roller Opposite Force Type Brake Testers National Metrological Verification Regulation of the People's Republic of China Roller reaction brake test bench 2015-12-07 released 2016-06-07 implementation State Administration of Quality Supervision, Inspection and Quarantine issued Verification Regulation of Roller Reaction - type Brake Test Bench Replacing JJG 906-2009 Responsible unit. National legal system management metrology technical committee The main drafting unit. Zhejiang Institute of Metrology China Testing Technology Research Institute Participated in the drafting unit. Zhejiang Jiangxing Automobile Testing Equipment Co., Ltd Gansu Institute of Metrology Shanghai Institute of Metrology and Testing Technology The procedures commissioned by the National Legal Metrology Management Metrology Technical Committee is responsible for the interpretation The main drafters of this procedure. Yan Jin (Zhejiang Institute of Metrology) Luo Faangui (China Test Technology Research Institute) Lin Feng (Zhejiang Institute of Metrology) Participate in the drafters. Shao Jianwen (Zhejiang Institute of Metrology) Zhou Shensheng (Zhejiang Jiangxing Automobile Testing Equipment Co., Ltd.) Gao Decheng (Gansu Institute of Metrology) Ma Ming (Shanghai Institute of Metrology and Testing Technology)

table of Contents

Introduction (II) 1 Scope (1) 2 References (1) 3 terms and units of measurement (1) 3.1 Roller sliding adhesion coefficient (1) 3.2 no-load dynamic zero value error (1) 3.3 Roller equivalent position (1) 3.4 Slip rate when the drive motor is automatically shut down (1) 4 Overview (1) 5 Measurement performance requirements (2) 5.1 Resolution (2) 5.2 no-load dynamic zero value error (2) 5.3 Static error (2) 5.4 Dynamic error (2) 5.5 sampling and data processing accuracy (2) 5.6 Roller sliding adhesion coefficient (2) 5.7 Slip rate when the drive motor is automatically shut down (2) 6 General technical requirements (2) 7 Metering device control (2) 7.1 Test conditions (2) 7.2 Verification Project (3) 7.3 Verification method (4) 7.4 Processing of test result (7) 7.5 Verification cycle (7) Appendix A Verification Record Format (8) Appendix B Certificate of Verification and Verification Results (End page) Format (9) Appendix C Dynamic braking force measuring device and detecting method (10) Appendix D sampling and data processing accuracy analog signal loading method (12) Appendix E Method of measuring the slip rate when the motor is automatically stopped (13) Appendix F Calibration method for dynamic braking force measuring device (14)

Introduction

This procedure replaces JJG 906-2009 "drum reaction brake test bench". Part of this procedure reference GB/T 13564-2005 "drum reaction type car brake test bench". This procedure compared with JJG 906-2009, in addition to editorial changes, the main changes are as follows. - according to JJF1002-2010 "national measurement procedures for the preparation of rules" provides that the original "2 cited literature" Changed to "2 reference file". --- cancel the original cited in the literature GB/T 16273.6-2003 "equipment with the symbol of the sixth part of the transport Input, vehicle inspection and loading machinery generic symbols ", cited in the document to increase GB/T 13564-2005" drum reaction Type brake test bench ". --- According to JJF1002-2010 "national measurement procedures for the preparation of rules" provides that the original "3 terminology" change For "3 terms and units of measurement". --- Eliminate the definition of "3.1 Roller reaction brake test bench" in the term. - Define the definition of "3.2 rated bearer quality" in the term. --- to cancel the term "3.3 roller surface equivalent adhesion coefficient", with reference to GB/T 13564-2005 "roll Cylinder reaction brake test bench "to" roller sliding adhesion coefficient ". - Define the "3.5 Indirect Difference" definition in the term. - the terms "roller equivalent position" and "slip rate when the drive motor is automatically shut down" are added. --- modify the "overview". --- cancel the "5.1 zero drift" requirements. --- increase the "resolution" requirements. --- modify the "5.2 no-load dynamic zero value error" requirements. --- cancel the "5.6 discrimination" requirements. --- modify the "5.7 roller adhesion coefficient" requirements. --- increase the "drive motor automatically stop when the slip rate" requirements. --- increase the "dynamic error" and "sampling and data processing accuracy" requirements. --- cancel the "6.1 appearance and general requirements" in the 6.1.5,6.1.6,6.1.7 requirements. --- cancel the "6.2 electrical safety" requirements. - Amend the requirements in "7.1.1 Environmental Conditions". In the "Table 1 test equipment", increase the "dynamic braking force measurement device" and "sampling and the number According to the requirements of processing measuring devices "; modify the" adhesion coefficient tester "requirements; modify the" vernier caliper "to (Optional); modify the "steel tape" requirements; increase the "slip rate measurement device" Claim. --- in the original provisions of the "use of inspection" to "check in use -"; cancel the test project "electrical safety "" Zero point drift "" discrimination "requirements; increase the test items" resolution "" dynamic measurement repeatability error " "Dynamic indication error" "sampling and data processing accuracy" "drive motor automatic shutdown slip rate" requirements; Modify the test item "roller adhesion coefficient" requirements. --- increase the "resolution" of the test method. --- cancel the "7.3.1.1 zero drift" test method. --- modify the "7.3.1.3 indication error" of the test method. --- cancel the "7.3.1.6 discrimination force" of the test method. --- modify the "7.3.1.7 roller sliding adhesion coefficient" of the test method. --- increase "dynamic error" in the "measurement repeatability" "indication error" "sampling and data processing accuracy" "Test method of slip rate when driving motor automatically shuts down". - Eliminate the "electrical safety" verification method in the general technical requirements. - Added Appendix C Dynamic Braking Force Measurement Apparatus and Method, Appendix D Sampling and Data Processing Accuracy Simulation Signal loading method, Appendix E method of measuring the slip rate when the motor is automatically shut down, Appendix F dynamic braking force test Calibration method for volume device. The previous version of this procedure is released as follows. --- JJG 906-1996; --- JJG 906-2009. Verification Regulation of Roller Reaction - type Brake Test Bench

1 Scope

This procedure applies to the first test of the drum reaction brake test stand (hereinafter referred to as the brake), the subsequent verification and Check in use.

2 reference file

Safety technical conditions for motor vehicle operation GB 7258 Roller reaction station for automobile brake test bench GB/T 13564-2005 GB 21861 Motor vehicle safety technical inspection items and methods For dated references, only the dated edition applies to this rule; references that are not dated , The latest version (including all amendments) applies to this procedure.

3 terms and units of measurement

GB/T 13564-2005 Definitions and the following terms and definitions apply to this Code. 3.1 Roller sliding adhesion coefficient slipadhesioncoefficientofroler When the vehicle wheel of the vehicle is slid on the upper bus of the active drum (wheel is locked), the brake force measured by the brake And the wheel of the gravity load ratio, for the dimensionless amount. 3.2 no-load dynamic zero-value error noloaddynamiczeroerror In the no-load operation state, the instrument displays the maximum deviation from the zero value. The unit is cattle (N) or ten cattle (daN). (GB/T 13564-2005, definition 3.4) 3.3 roller equivalent position equivalentpositionofroler A special force lever is fixed to a position outside the drum to apply torque to the drum, and the rotational center of the torque is in the drum On the extension line of the shaft, the special force lever should be able to apply the torque directly to the main drum. 3.4 slip rate when the drive motor is automatically shut down slipratioofdrivingmotorstop For a brake table with a third roller, when the vehicle is detected to brake, the third drum linear velocity varies with the brake wheel wire speed The slow speed of the slowdown in the brake drive motor automatically shut down the moment, the main roller speed and the third roller line speed The difference between the speed of the main drum and the speed of the main drum.

4 Overview

The brake is a measuring device used to measure the braking force of a motor wheel. The brake table is mainly driven by the drum device Machine, slowdown agencies, monitoring and control systems and display instruments and other components. The measuring principle of brake wheel braking force. motor vehicle brake , The wheel on the rotating drum surface to produce reverse tangential force, through the brake measuring system to detect the reverse tangential force that For the wheel power.

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