GB/T 786.2-2018 English PDF

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GB/T 786.2-2018: Fluid power systems and components -- Graphical symbols and circuit diagrams -- Part 2: Circuit diagrams
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Similar standards

GB/T 2351   GB/T 2350   GB/T 3766   GB/T 2878.1   GB/T 9065.2   GB/T 786.1   

Basic data

Standard ID: GB/T 786.2-2018 (GB/T786.2-2018)
Description (Translated English): Fluid power systems and components -- Graphical symbols and circuit diagrams -- Part 2: Circuit diagrams
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J20
Classification of International Standard: 23.100.01
Word Count Estimation: 26,227
Date of Issue: 2018-12-28
Date of Implementation: 2019-07-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 786.2-2018: Fluid power systems and components -- Graphical symbols and circuit diagrams -- Part 2: Circuit diagrams

---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.
Fluid power systems and components--Graphical symbols and circuit diagrams--Part 2. Circuit diagrams ICS 23.100.01 J20 National Standards of People's Republic of China Fluid drive system and component graphic symbols and circuit diagrams Part 2. Circuit diagram Part 2. Circuitdiagrams (ISO 1219-2.2012, MOD) Published on.2018-12-28 2019-07-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General 1 4.1 General requirements 1 4.2 Format 2 4.3 Layout 2 4.4 Component 3 5 Identification rules for components in the fluid transmission circuit diagram 3 5.1 Identification code for component and hose assembly 3 5.2 Connector Identification 4 5.3 Pipeline identification code 5 5.4 Non-mandatory pipeline application code 5 6 Technical information in the circuit diagram 6 6.1 General 6 6.2 Loop function 6 6.3 Electrical Reference Name 7 6.4 Component 7 7 Additional information 9 8 loop diagram example 9 9 Labeling instructions 10 Appendix A (informative) The relationship between the identification code of components and hose assemblies and the individual components 11 Appendix B (informative) Example of component list 12 Appendix C (informative) Hydraulic circuit diagram example 13 Appendix D (informative) Pneumatic circuit diagram example 16 Appendix E (informative) Lubrication circuit diagram example 19 Reference 21

Foreword

GB/T 786 "Fluid Transmission System and Component Graphic Symbols and Circuit Diagrams" is divided into two parts. --- Part 1. Graphical symbols for general use and data processing; --- Part 2. Circuit diagram. This part is the second part of GB/T 786. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This section uses the redrafting method to modify the use of ISO 1219-2.2012 "fluid drive systems and components graphic symbols and circuit diagrams Part 2. Circuit Diagram. The technical differences between this part and ISO 1219-2.2012 and their reasons are as follows. --- Regarding the normative reference documents, this section has made technical adjustments to adapt to the technical conditions of China. Adjustment The situation is reflected in Chapter 2, “Regulatory References”, as follows. ● Replace ISO 1219-1 with GB/T 786.1 equivalent to the international standard (see 4.3.1, 4.4.1, 4.4.2, Chapter 8); ● Replace ISO 4397 with GB/T 2351 equivalent to the international standard (see 6.4.13); ● Replace ISO 3448 with GB/T 3141 equivalent to the international standard (see Chapter 2, 6.4.1.1); ● Replace ISO 6743-4 with GB/T 7631.2 equivalent to the international standard (see Chapter 2, 6.4.1.1); ● Replace ISO 5457 with GB/T 14689 modified to international standards (see Note 4.2, Chapter 8); ● Replace ISO 3098-0 with GB/T 14691 equivalent to the international standard (see Chapter 2, 4.2); ● Replace ISO 5598 with GB/T 17446 equivalent to the international standard (see Chapter 3); ● Replace ISO 16889 with GB/T 18853 with international standards (see 6.4.12.1); --- Added normative references GB/T 3766, GB/T 7932 (see Chapter 2, 4.1.3); --- Removed 3.1, 3.2, 3.3, 3.4 from terms and definitions (see Chapter 3); --- Added the relevant requirements for "function diagrams as supplementary information" (see 7.2). This section also made the following editorial changes. ---ISO 1219-2.2012 pump and motor displacement unit is "cm3", the pump and motor displacement units of this part are changed to "mL/r"; ---Remove references [1] and [2] in ISO 1219-2.2012; --- Appendix A ~ Appendix E has been rearranged in the order mentioned in the standard text; --- "Dash line" in the pattern of Appendix C ~ Appendix E is changed to "double dotted line". This part was proposed by the China Machinery Industry Federation. This part is under the jurisdiction of the National Hydraulic and Pneumatic Standardization Technical Committee (SAC/TC3). This section drafted by. Xuzhou Xugong Hydraulic Parts Co., Ltd., Beijing Machinery Industry Automation Research Institute Co., Ltd., Hefei Xieli Hydraulic Technology Co., Ltd., Jiangyin Hongteng Machinery Co., Ltd., Beijing Huade Hydraulic Industry Group Co., Ltd., Shandong Zhongchuan Hydraulic Co., Ltd. the company. The main drafters of this section. Chen Dengmin, Zhang Qiang, Cao Qiaohui, Huang Cuiping, Yu Yandong, Wang Qinghan, Yan Qingxiang. Fluid drive system and component graphic symbols and circuit diagrams Part 2. Circuit diagram

1 Scope

This part of GB/T 786 specifies the rules for drawing hydraulic and pneumatic circuit diagrams. This section applies to hydraulic and pneumatic circuit diagrams, as well as to cooling systems, lubrication systems, cooling lubrication systems, and fluid transmission phases. Off the application of special gas systems.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 786.1 Fluid transmission systems and components - Graphical symbols and diagrams - Part 1 . diagrams for general use and data processing Shape symbol (GB/T 786.1-2009, ISO 1219-1.2006, IDT) Hard tube outer diameter and hose inner diameter for GB/T 2351 hydraulic and pneumatic systems (GB/T 2351-2005, ISO 4397.1993, IDT) GB/T 3141 Industrial Liquid Lubricant ISO Viscosity Classification (GB/T 3141-1994, eqvISO 3448.1992) General rules and safety requirements for GB/T 3766 hydraulic drive systems and their components (GB/T 3766-2015, ISO 4413. 2010, MOD) GB/T 7631.2 Classification of lubricants, industrial oils and related products (Class L) Part 2. Group H (hydraulic systems) (GB/T 7631.2-2003, ISO 6743-4..1999, IDT) GB/T 7932 General rules and safety requirements for pneumatic systems and their components (GB/T 7932-2017, ISO 4414.2010, IDT) GB/T 14689 Technical drawing format format and format (GB/T 14689-2008, ISO 5457.1999, MOD) GB/T 14691 technical drawing font (GB/T 14691-1993, eqvISO 3098-1. 1974, ISO 3098-2. 1984) GB/T 17446 fluid drive system and component vocabulary (GB/T 17446-2012, ISO 5598.2008, IDT) GB/T 18853 hydraulic transmission filter for multi-pass method for evaluating filter performance (GB/T 18853-2015, ISO 16889.2008, MOD)

3 Terms and definitions

The terms and definitions defined in GB/T 17446 apply to this document.

4 General

4.1 General requirements 4.1.1 The circuit diagram should be clearly marked and all the actions and control functions of the system can be implemented according to the circuit. 4.1.2 The circuit diagram shall be capable of reflecting all fluid transmission components and their connection. 4.1.3 The circuit diagram does not have to consider the physical arrangement of components in actual assembly. Information about the component itself and its assembly relationship (including ......

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