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GB/T 26548.10-2021 English PDF

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GB/T 26548.10-2021: Hand-held portable power tools - Test methods for evaluation of vibration emission - Part 10: Percussive drills, hammers and breakers
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GB/T 26548.10-2021English474 Add to Cart 5 days [Need to translate] Hand-held portable power tools - Test methods for evaluation of vibration emission - Part 10: Percussive drills, hammers and breakers Valid GB/T 26548.10-2021

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Basic data

Standard ID GB/T 26548.10-2021 (GB/T26548.10-2021)
Description (Translated English) Hand-held portable power tools - Test methods for evaluation of vibration emission - Part 10: Percussive drills, hammers and breakers
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J48
Word Count Estimation 26,284
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 26548.10-2021: Hand-held portable power tools - Test methods for evaluation of vibration emission - Part 10: Percussive drills, hammers and breakers


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Hand-held portable power tools - Test methods for evaluation of vibration emission - Part 10.Percussive drills, hammers and breakers ICS 13.160; 25.140.10 CCSJ48 National Standards of People's Republic of China Vibration test method for handheld portable power tools Part 10.Impact Rock Drills, Hammers and Breakers (ISO 28927-10.2011, IDT) Released on 2021-10-11 2022-05-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Table of contents

Foreword Ⅰ Introduction Ⅱ 1 Scope 1 2 Normative references 1 3 Terms, definitions and symbols 1 4 Basic criteria and vibration test methods 3 5 Description of machine type 3 6 Description of vibration characteristics 5 7 Instrument requirements 8 8 Test and operating conditions of the machine 9 9 Measurement procedures and effectiveness of measurements 14 10 Test report 14 Appendix A (informative) Percussion drill, hammer and breaker vibration test report format 16 Appendix B (Normative) Determination of Uncertainty 18 Appendix C (Normative) Structure of Energy Absorber 20 Reference 21

Foreword

This document is drafted in accordance with GB/T 1.1-2020 "Guidelines for Standardization Part 1.Structure and Drafting Rules of Standardization Documents". This document is part 10 of GB/T 26548.GB/T 26548 has released the following parts. ---Part 1.Angle and end face grinders; ---Part 2.Gas trigger, nut wrench and screwdriver; ---Part 3.Polishing machines, rotary, sliding and compound polishing machines; ---Part 4.Straight shank grinder; ---Part 5.Drills and impact drills; ---Part 6.Compaction machine; ---Part 7.Punching machines and scissors; ---Part 8.Reciprocating saws, polishing machines and files, and pendulum or rotary saws; ---Part 9.Derusting hammer and needle beam derusting device; ---Part 10.Impact rock drills, hammers and breakers; ---Part 11.Stone Hammer; ---Part 12.Mold grinder. This document uses the translation method equivalent to ISO 28927-10.2011 "Hand-held portable power tools vibration test methods Part 10 Sub. Impact Rock Drill, Hammer and Breaker. The Chinese documents that have consistent correspondence with the normatively cited international documents in this document are as follows. ---GB/T 5621-2008 Performance test method for rock drilling machinery and pneumatic tools (ISO 2787.1984, MOD) ---GB/T 6247.1-2013 Rock Drilling Machinery and Portable Power Tools Terminology Part 1.Rock Drilling Machinery, Pneumatic Tools and Pneumatic machinery (ISO 5391.2003, MOD) ---GB/T 6247.2-2013 Terminology for rock drilling machinery and portable power tools Part 2.Hydraulic tools (ISO 17066. 2007, IDT) ---GB/T 14790.1-2009 Mechanical vibration Measurement and evaluation of human exposure to hand-transmitted vibration Part 1.General requirements (ISO 5349-1.2001,IDT) ---GB/T 14790.2-2014 Mechanical vibration Measurement and evaluation of human exposure to hand-borne vibration Part 2.Workplace Practical Guide to Measurement (ISO 5349-2.2001, IDT) ---GB/T 25631-2010 Mechanical vibration Hand-held and hand-guided mechanical vibration evaluation rules (ISO 20643.2005, IDT) This document has made the following editorial changes. --- Convert the "bar" in the international standard to "MPa" (1bar=0.1MPa); ---According to the specific circumstances of the normatively cited documents in this document, ISO 5391.2003 in Chapter 2 is changed to ISO 5391, Moved ISO 679 in the reference into Chapter 2; ---Revised the incorrect article number quoted in 7.4; ---Corrected the incorrect content of the experimental conditions in Table A.1 in the international standard. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Standardization Technical Committee for Rock Drilling Machinery and Pneumatic Tools (SAC/TC173). Drafting organizations of this document. Dongguan Institute of Technology, Tianshui Rock Drilling Machinery Pneumatic Tool Research Institute, National Pneumatic Product Quality Supervision and Inspection Center. The main drafters of this document. Zhou Zirong, Wang Jianzu, Hui Weian, Cheng Faliang, Chen Jilong, Mao Qianhui.

Introduction

In order to measure the vibration radiation value of the handle of the handheld portable power tool in expected use, to evaluate and manage the operation of the operator in the use of the machine The International Organization for Standardization plans to formulate a 13-part document of ISO 28927 for the risk of vibration damage faced by the industry. Has been released so far The 12-part document, and the 13-part document is under development. China intends to adopt the same standard for 13 partial documents of ISO 28927. It is determined as the document corresponding to each part of GB/T 26548.The proposed composition of GB/T 26548 is as follows. ---Part 1.Angle and end face grinders. Covers hands equipped with protective covers for grinding, cutting and rough grinding on various materials Holding machine. ---Part 2.Gas trigger, nut wrench and screwdriver. Covers hand-held machines for tightening and loosening threaded fasteners. ---Part 3.Polishing machines, rotary, sliding and compound polishing machines. Covers the purpose of surface treatment rather than removal of material Purpose of the handheld machine. ---Part 4.Straight shank grinder. Covers the use of various flat grinding wheels, double bevel grinding wheels, and core grinding heads on various materials Hand-held machine for grinding and surface finishing operations. ---Part 5.Drills and impact drills. Covers hand-held machines that drill holes in various materials through rotation and impact. ---Part 6.Compaction machine. Covers hand-held machines for foundry sand compaction or stamping operations. ---Part 7.Punching machine and scissors. Covers hand-held machines for cutting sheet metal and composite materials. ---Part 8.Reciprocating saws, polishing machines and files, and pendulum or rotary saws. Covers the table with a file or polishing tool installed Hand-held machines for surface trimming, hand-held machines for sawing boards, medical plaster or wood, or Hand-held machines for saw blades of various materials, as well as hand-held machines for cutting metal and composite materials. ---Part 9.Derusting hammer and needle beam derusting device. Covers the use of reciprocating working tools or needle bundles to remove oil from various materials Hand-held machines with lacquer, rust spots or oxide skin. ---Part 10.Impact rock drills, hammers and breakers. Covers hand-held rotation for drilling holes in hard materials such as rock and concrete Impact machine. ---Part 11.Stone Hammer. Covers stone hammer type hand-held machines, which are usually pneumatic straight-handled machines. ---Part 12.Mold grinder. Covered by hard alloy burr knife or grinding head mounted on the chuck in hard steel/plastic, etc. Material, a hand-held machine for trimming operations. ---Part 13.Fastener drive tools. Covers handheld machines for fastener drive. This document is a Type C standard specified in ISO 12100. For machines designed and manufactured in accordance with the requirements of Type C standards, when the requirements of Type C standards are different from those in Type A or Type B standards At this time, the requirements in the C-type standards are better than those in other types of standards. GB/T 25631 gives general technical conditions for handheld and hand-guided mechanical vibration measurement, GB/T 26548 (all parts) Based on this standard, it gives a vibration test method for hand-held portable machines, and specifies the operating conditions of the machine under type test conditions and the Other requirements for type test performance. The standard structure and chapter numbering are consistent with GB/T 25631. This document adopts the sensor reference positioning method first adopted in the European series of standards EN60745. The description is inconsistent with GB/T 25631.The sensor is preferably placed in the area between the thumb and index finger near the hand, because this position is right. The operator has minimal interference when holding the machine. Generally, the vibration produced by impact machines varies greatly during use. For impact machines, the main source of vibration is impact. The difference in vibration characteristics is caused by differences in the nature of the work, the insertion tools, the materials handled, and the skills of the operators. The value obtained is the type test value, which is used to represent the average value of the upper quartile of the typical vibration of the machine in actual use. However, Actual values sometimes vary greatly, depending on many factors, including the operator, work tasks, and insertion tools or consumables. The machine itself The maintenance status may also be important. In real working conditions, the impact of operators and operating procedures on low-amplitude vibration is particularly serious. because Therefore, the vibration radiation value below 2.5m/s2 is not recommended for evaluation under real working conditions. In this case, it is recommended to use 2.5m/s2 vibration Momentum value is used to directly evaluate the vibration of the machine. If precise values are required in a specific workplace, it is necessary to perform the calculation in accordance with the provisions of GB/T 14790 (all parts) under this working condition. Line measurement. The measured vibration value under actual working conditions may be higher or lower than the value obtained with this section. In actual working conditions, excessive wear or bending of the insertion tool is prone to high vibration. Vibration test method for handheld portable power tools Part 10.Impact Rock Drills, Hammers and Breakers

1 Scope

This document specifies the hand-transmitted vibration radiation measurement of the handle part of the hand-held portable power-driven impact machine with or without rotation function. The test method of quantity, the products involved are portable rock drills, small blasthole drills, rotary hammers, and breakers (such as road breakers, concrete breakers) Or road breaker), riveting machine, air shovel, pickaxe or similar tools, it is determined that the handle grip is Type inspection procedures for the vibration level of the holding parts. The measured results are used to compare the vibration levels of different types of machines of the same type. This document applies to hand-held machines driven by compressed air or other methods for drilling holes in hard materials such as rock and concrete (See Chapter 5); also suitable for crushers that perform downward crushing operations on hard materials (concrete, rocks, sidewalks, asphalt pavements, etc.), And hammer tools for riveting and chipping in any direction. This document does not apply to impact drills with pure impact mechanisms, and air-leg chisels where thrust is provided by an additional device instead of being applied by hand. Rock machine. Note. To avoid confusion between "power tools" and "insertion tools", "machines" are used instead of "power tools" throughout this document.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. ISO 679 cement test method strength determination (Cement-Testmethods-Determinationofstrength) ISO 2787 Rotary and impact pneumatic tools performance test (Rotaryandpercussivepneumatictools-Perfor- mancetests) ISO 5349 (all parts) Mechanical vibration Measurement and evaluation of human body exposure to hand-borne vibration (Mechanicalvibration- Measurementandevaluationofhumanexposuretohand-transmittedvibration) ISO 5391 Pneumatic tools and machines-Vocabulary ISO 17066 Hydraulic tools-Vocabulary (Hydraulictools-Vocabulary) ISO 20643.2005 Mechanical vibration Hand-held and hand-guided mechanical vibration evaluation rules (Mechanicalvibration- Hand-heldandhand-guidedmachinery-Principlesforevaluationofvibrationemission) EN12096 Marking and verification of mechanical vibration vibration radiation value (Mechanicalvibration-Declaration and Verifica- tionofvibrationemissionvalues) 3 Terms, definitions and symbols The following terms, definitions and symbols defined by ISO 5391, ISO 17066, and ISO 20643 apply to this document. 3.1 Terms and definitions 3.1.1 Rock drill rockdril Rotary impact machine that drills holes and blows powder into rocks, concrete and other materials.

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