GB/T 28757-2012 English PDFUS$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 28757-2012: Cranes other than mobile, tower and floating cranes and tower cranes -- General requirements for stability Status: Valid
Basic dataStandard ID: GB/T 28757-2012 (GB/T28757-2012)Description (Translated English): Cranes other than mobile, tower and floating cranes and tower cranes -- General requirements for stability Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: J80 Classification of International Standard: 53.020.20 Word Count Estimation: 6,672 Quoted Standard: GB/T 6974.1; ISO 4302 Adopted Standard: ISO 4304-1987, MOD Regulation (derived from): National Standards Bulletin No. 28 of 2012 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the calculations to verify GB/T 6974. 1 defines the various types of cranes (mobile, tower cranes and floating exception) anti -tipping stability conditions to be met, assuming that the level of the crane on a solid support surface GB/T 28757-2012: Cranes other than mobile, tower and floating cranes and tower cranes -- General requirements for stability---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. ICS53.020.20 J80 National Standards of People's Republic of China In addition to the flow type, tower and floating crane Crane General requirements for stability Cranesotherthanmobile, towerandfloatingcranesandtowercranes- (ISO 4304. 1987, Cranesotherthanmobileandfloatingcranesand towercranes-Generalrequirementsforstability, MOD) Issued on. 2013-02-01 2012-11-05 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard rule according to GB/T 1.1-2009 given draft. This standard uses redrafted law revision adopted ISO 4304. 1987 "in addition to flow-type floating cranes and crane stability Basic requirements "(in English). This standard and ISO 4304. Difference and Its Cause 1987 is as follows. --- Because China has GB/T 20304-2006/ISO 12485.. 1998 "tower crane stability requirements" This standard name And scope of the changes and adjustments made as follows. ● the standard name was changed to "" In addition to the flow type, tower cranes and floating cranes General requirements for stability "." ● standard range "(except mobile type and floating cranes) various types of cranes" by a changed to "various types of cranes (Flow type, except for the tower and floating crane). " --- On normative references, this standard has been adjusted technical differences, in order to adapt our technical conditions, the adjusted situation Focus is reflected in the status of Chapter 2, "Normative references", the specific adjustments are as follows. ● equivalents adoption of international standards GB/T 6974.1 instead of ISO 4304. 1987 references ISO 4306-1. For ease of use, this standard also made the following editorial changes. --- The International Standard mount section 3.2 to modify the contents of this standard in 3.2.1, and international standards in terms of number 3.2.1 3.2.2 and modify the terms of this standard number 3.2.2 and 3.2.3 respectively. The standard proposed by China Machinery Industry Federation. This standard by the National Standardization Technical Committee crane (SAC/TC227) centralized. This standard was drafted. Dalian University of Technology, Beijing Materials Handling Machine Design and Research Institute, the National Quality Supervision and Inspection handling equipment center. The main drafters of this standard. Guipei Kang, Lin Fukui, Wang Xin, Teng Ru people, Caoxu Yang, Pan Zhiyi. In addition to the flow type, tower and floating crane Crane General requirements for stability1 ScopeThis standard specifies the calculations to verify GB/T 6974.1 defined various types of cranes (except mobile style, tower and floating crane) Anti-tipping stability conditions to be met, it is assumed crane placed on a solid surface or horizontal support rails. This standard does not include crane in its orbit validation slip.2 Normative referencesThe following documents for the application of this document is essential. For dated references, only the dated edition applies to this article Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 6974.1 crane terminology - Part 1. General terms (GB/T 6974.1-2008, ISO 4306-1.2007, IDT) ISO 4302 crane wind load estimation (Cranes-Windloadassessment)3 Stability3.1 Calculation 3.1.1 When the stabilizing torque crane algebra and algebra when greater than tipping moment is that the crane is stable. 3.1.2 Table 1 should be used to value the stability of algebra and checksum calculation of the crane tipping moment. In all calculations, the role and position of the crane components, all loads and forces shall be according to the most unfavorable combination of direction and action To consider. 3.1.3 crane inclined surface work, the manufacturer in the calculation of the stability, the conditions should be given consideration. 3.1.4 Press with load crane design, calculation, in addition to Table 1 Condition Ⅱ predetermined load, it must also consider requiring the manufacturer Track allows maximum vertical deviation of the force generated. 3.1.5 permanently installed (fixed) crane, the specific use of the site or regional seismic effect in Table 1 should Ⅰ, Ⅱ, Ⅲ working conditions Next to be considered separately as an additional load. 3.1.6 When calculated according to Table 1, it should consider the weight of the load caused by the crane and its components, including the crane in working condition testimony All the weight load of the spreader caused permanent member. 3.2 after anti-tipping stability under working conditions 3.2.1 verification requirements When the crane is in the unloaded state, all the movable member is retracted into the work closest to the line after tipping position, after the anti-working state It should be required to rollover Stability 3.2.2 or 3.2.3 (also in accordance with Table 1 condition Ⅳ) for verification. 3.2.2 Moment Method Work by the wind load W1 and inertial forces generated by tipping moment D should not exceed 90% of the steady torque. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 28757-2012_English be delivered?Answer: Upon your order, we will start to translate GB/T 28757-2012_English as soon as possible, and keep you informed of the progress. 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