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GBZ44070-2024 English PDF

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US$454.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GBZ44070-2024: Hydraulic cylinder - Method for evaluating the buckling load
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/Z 44070-2024	454	Add to Cart	4 days	Hydraulic cylinder - Method for evaluating the buckling load	Valid

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Basic data

Standard ID: GB/Z 44070-2024 (GB/Z44070-2024)
Description (Translated English): Hydraulic cylinder - Method for evaluating the buckling load
Sector / Industry: National Standard
Classification of Chinese Standard: J20
Classification of International Standard: 23.100.20
Word Count Estimation: 22,233
Date of Issue: 2024-06-29
Date of Implementation: 2024-06-29
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GBZ44070-2024: Hydraulic cylinder - Method for evaluating the buckling load

---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.
GB /Z 44070-2024.Buckling load assessment method for hydraulic cylinders ICS 23.100.20 CCSJ20 Guiding technical documents of the People's Republic of China on national standardization Buckling Load Assessment Method for Hydraulic Cylinders (ISO /T S13725.2021,Hydraulicfluidpower-Methodforevaluating Released on 2024-06-29 2024-06-29 implementation State Administration for Market Regulation The National Standardization Administration issued

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Symbols and units 1 5 Basic principles 3 6 Hydraulic cylinder hinged installation at both ends 6 7 Fixed installation at the bottom of the cylinder and hinged installation at the end of the piston rod 8 8 Cylinder bottom end hinged installation Piston rod end fixed installation 9 9 Fixed installation at both ends of the hydraulic cylinder 10 10 The bottom of the cylinder is fixed and the end of the piston rod is free 11 11 The ends of the hydraulic cylinder are fixed and the piston rod ends can move within the limits shown in the figure 12 Appendix A (Informative) Calculation Results Example 14 References 16

Foreword

This 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 is equivalent to ISO /T S13725.2021 "Hydraulic transmission hydraulic cylinder buckling load assessment method", the file type is ISO The technical specifications are adjusted to become my country's national standardization guiding technical documents. The following minimal editorial changes were made to this document. --- Change the name of the standard to "Hydraulic cylinder buckling load assessment method"; --- Corrected a few editorial errors in ISO /T S13725.2021.The definition of F in Table 1 of ISO /T S13725.2021 is the most In the text, F stands for axial load and Fmax stands for maximum allowable force, so the symbol Fmax is added in Table 1. represents the maximum allowable force, and F is changed to axial load. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Machinery Industry Federation. This document is under the jurisdiction of the National Hydraulic and Pneumatic Standardization Technical Committee (SAC/TC3). This document was drafted by. Zhejiang University, Bengbu Hydraulic Machinery Co., Ltd., Xiamen University, Shenyang Northeast Electric Power Regulation Technology Co., Ltd., Zhejiang Jiangxin Hydraulic Technology Co., Ltd., Youweili Hydraulic Technology Co., Ltd., Shaoguan Hydraulic Parts Factory Co., Ltd., Xiamen Yinhua Machinery Co., Ltd. Co., Ltd., Jiangsu Jianghai Lubricating Equipment Co., Ltd., Qidong MCC Lubrication Hydraulic Equipment Co., Ltd., Guangdong Nanxi Hydraulic Machinery Co., Ltd., Yantai Taixinghui Lawsberg Hydraulic Machinery Co., Ltd., Shandong Fuyang Hydraulic Technology Co., Ltd., China Machinery Engineering Institute Group Haixi (Fujian) Branch Co., Ltd. Company, China Coal Beijing Coal Mining Machinery Co., Ltd., Changde Jiahong Machinery Co., Ltd., Beijing Machinery Industry Automation Research Institute Limited company. The main drafters of this document are. Xu Bing, Hou Shuaihao, Liu Qiangqiang, Ye Shaogan, Zheng Xueming, Jiang Xianjiang, Lin Guang, Huang Zhiwu, Ji Changxi, Wang Qiubao, Wang Dong, Fu Wei, Yang Ming, Lü Huaijian, Zhan Wen, Bao Dongsheng, Tan Yuqi, Cao Qiaohui. Buckling Load Assessment Method for Hydraulic Cylinders

1 Scope

This document describes a method for evaluating the buckling load of hydraulic cylinders. a) The geometric model of the hydraulic cylinder is calculated as a cylinder with non-uniform cross-section; b) Applicable to the hydraulic cylinder installation and spherical plain bearing connection forms given in Table 2; c) Include a safety factor k (set by the assessor and included in the assessment report together with the calculation results); d) Consider possible loads that deviate from the axial direction; e) Consider the weight of the hydraulic cylinder and all radial loads applied to the hydraulic cylinder under different installation forms; f) can be implemented by a simple computer program; g) Applicable to the hydraulic cylinder piston rod fully extended state. The method presented in this document is based on the elastic buckling theory and is applicable to applications in accordance with ISO 6020 (all parts), ISO 6022 and ISO 10762. Single-acting hydraulic cylinders and double-acting hydraulic cylinders. This method is not applicable to thin-walled hydraulic cylinders, double-rod hydraulic cylinders and plunger hydraulic cylinders. This method is not suitable for evaluating piston rod buckling inside hydraulic cylinders. This method does not take into account the friction of ball bearings. Note. This method is based on the research results of Fred Hoblit and refers to the US standard NFPA/T 3.6.37.

2 Normative references

This document has no normative references. ISO and IEC maintain databases of terminology used in standards at the following addresses.

3 Terms and definitions

There are no terms or definitions that require definition in this document.

4 Symbols and units

4.1 Basic symbols The symbols and units in Table 1 apply to this document. Dimensions and other characteristics are shown in Figures 1 and 2. Table 1 Symbols and units Symbol Meaning Unit C Bending stiffness of the free end of the piston rod under lateral force N/mm D1e Cylinder outer diameter mm D1i Cylinder inner diameter mm D2 Piston rod diameter mm ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GBZ44070-2024_English be delivered?

Answer: Upon your order, we will start to translate GBZ44070-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GBZ44070-2024_English with my colleagues?

Answer: Yes. The purchased PDF of GBZ44070-2024_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.