GB/T 20456-2023 English PDFUS$224.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 20456-2023: Portable chain-saws - Non-manually actuated chain brake performance Status: Valid GB/T 20456: Historical versions
Basic dataStandard ID: GB/T 20456-2023 (GB/T20456-2023)Description (Translated English): Portable chain-saws - Non-manually actuated chain brake performance Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: B95 Classification of International Standard: 65.060.80 Word Count Estimation: 11,191 Date of Issue: 2023-05-23 Date of Implementation: 2023-12-01 Older Standard (superseded by this standard): GB/T 20456-2012 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 20456-2023: Portable chain-saws - Non-manually actuated chain brake performance---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.ICS 65:060:80 CCSB95 National Standards of People's Republic of China Replacing GB/T 20456-2012 Portable Chainsaw Non-Manual Trigger Saw chain brake performance (ISO 13772:2018, Forestrymachinery-Portablechain-saws- Released on 2023-05-23 2023-12-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee forewordThis 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: This document replaces GB/T 20456-2012 "Forestry Machinery Portable Chain Saw Passive Saw Chain Brake Performance Requirements and Test Methods Compared with GB/T 20456-2012, except for structural adjustment and editorial changes, the main technical changes are as follows: a) Electric chain saws are added to "Scope" (see Chapter 1, Chapter 1 of the:2012 edition); b) Changed the content of "Performance Requirements" (see Chapter 4, Chapter 4 of the:2012 edition); c) The provisions for electric chain saws have been added in Figure 1 (see Chapter 4); d) Changed the content of "acceleration test equipment" (see 6:1, 6:1 of the:2012 edition); e) Changed the content of "test device" (see 6:2, 6:2 of the:2012 edition); f) Changed the content of "test preparation" (see Chapter 7, Chapter 7 of the:2012 edition); g) Changed the contents of the low-pass filter in Appendix A (see Appendix A, Appendix A of the:2012 edition): This document is equivalent to ISO 13772:2018 "Forestry Machinery Portable Chain Saw Non-Manual Trigger Saw Chain Brake Performance": The following minimal editorial changes have been made to this document: --- In order to coordinate with existing standards, change the name of the standard to "Performance of Non-Manual Trigger Saw Chain Brake for Portable Chain Saws"; ---Incorporated the amendments of ISO 13772:2018/Amd:1:2020, the outer margins of the terms involved are vertical Double lines (‖) are marked: Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed by the State Forestry and Grassland Administration: This document is under the jurisdiction of the National Forestry Machinery Standardization Technical Committee (SAC/TC61): This document is drafted by: Zhejiang Zhongma Garden Machinery Co:, Ltd:, Harbin Forestry Machinery Research Institute of the State Forestry and Grassland Bureau, Zhejiang Jiang Zhongjian Technology Co:, Ltd:, Zhejiang Sanfeng Industrial Co:, Ltd:, Zhejiang Pioneer Technology Co:, Ltd:, Jiangsu Linhai Power Machinery Group Co:, Ltd:, Zhejiang Huangjia Garden Tools Manufacturing Co:, Ltd:, Nanjing Chervon Technology Co:, Ltd: The main drafters of this document: Lai Youzheng, Li Yingzhen, Yang Haiyue, Yang Feng, Zhu Daoqing, Zhang Rongshan, Tang Enchang, Gao Yang: This document was first released in:2006, revised for the first time in:2008, revised for the second time in:2012, and this is the third revision: Portable Chainsaw Non-Manual Trigger Saw chain brake performance1 ScopeThis document specifies the performance requirements and requirements for non-manually triggered chain brakes for hand-held portable chainsaws powered by electric or gasoline engines and experiment method:2 Normative referencesThe contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: ulary) Note: GB/T 18960-2023 Portable Chainsaw Vocabulary (ISO 6531:2017, IDT)3 Terms and DefinitionsThe terms and definitions defined in ISO 6531 apply to this document: ISO and IEC maintain terminology databases for standardization at the following addresses: ---ISO online browsing platform: https://www:iso:org/obp;4 performance requirementsThe performance of non-manually triggered saw chain brakes shall be tested on a new chain saw in normal production, equipped with the cutting tool specified in the instruction manual: The shortest and longest guide plates with a cutting length not greater than 500mm: If the specified guide plate cutting length is not less than 500mm, only use Test with the shortest guide bar specified: Battery-operated chainsaws with several recommended battery pack options should be ordered with the lightest battery pack and shortest The largest guide plate, the heaviest battery pack and the longest guide plate configuration are tested: When testing in accordance with the provisions of Clause 8, the horizontal acceleration (ax) and vertical acceleration (ay) of each triggering action of the saw chain brake When the intersection points of the coordinates are all below the critical lines of different chain saw types and sizes listed in a), b) or c) in Figure 1, it is determined that the non-manual trigger saw The performance of the chain brake is acceptable: ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 20456-2023_English be delivered?Answer: Upon your order, we will start to translate GB/T 20456-2023_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 20456-2023?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 20456-2023 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
