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GB/T 25629: Historical versions
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Hydraulic excavator - Central turning joint
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| GB/T 25629-2010 | English | 439 |
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Hydraulic excavator -- Central turning hydraulic joint
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Basic data
| Standard ID | GB/T 25629-2021 (GB/T25629-2021) |
| Description (Translated English) | Hydraulic excavator - Central turning joint |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | P97 |
| Word Count Estimation | 11,112 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 25629-2021: Hydraulic excavator - Central turning joint
---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.
Hydraulic excavator -- Central turning joint
ICS 53:100
CCSP97
National Standards of People's Republic of China
Replacing GB/T 25629-2010
Hydraulic excavator central rotary joint
Published on 2021-12-31
2022-07-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
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 of Standardization Documents"
drafted:
This document replaces GB/T 25629-2010 "Central Swivel Joint for Hydraulic Excavators": Compared with GB/T 25629-2010, except for the
In addition to structural adjustments and editorial changes, the main technical changes are as follows:
--- Modified the scope of application (see Chapter 1, Chapter 1 of the:2010 edition);
--- Modified the product classification (see Chapter 4, Chapter 4 of the:2010 edition);
--- Modified the requirements (see Chapter 5, Chapter 5 of the:2010 edition);
--- Modified the test method (see Chapter 6, Chapter 6 of the:2010 edition);
--- Modified the inspection rules (see Chapter 7, Chapter 7 of the:2010 edition):
Please note that some content of this document may be patented: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed by China Machinery Industry Federation:
This document is under the jurisdiction of the National Earthmoving Machinery Standardization Technical Committee (SAC/TC334):
This document is drafted by: Jiangsu Changling Hydraulic Co:, Ltd:, Tianjin Construction Machinery Research Institute Co:, Ltd:, Lovol Construction Machinery Group
Ltd:
The main drafters of this document: Zhou Tao, Deng Yanfang, Hu Yueping:
This document was first published in:2010 and this is the first revision:
Hydraulic excavator central rotary joint
1 Scope
This document specifies the classification, technical requirements, test methods, inspection rules, marking, packaging and transportation of central rotary joints for hydraulic excavators
lose and so on:
This document applies to central swivel joints for hydraulic excavators, cranes, aerial work vehicles, shield machines, rotary drilling rigs, motor graders, offshore
The central rotary joints for mechanical equipment such as industrial platforms can be used for reference:
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document:
GB/T 2828:1 Counting Sampling Inspection Procedure Part 1: Lot-by-Lot Inspection Sampling Plan Retrieved by Acceptance Quality Limit (AQL)
GB/T 7932 General rules and safety requirements for pneumatic systems and their components
GB/T 7935 General Specifications for Hydraulic Components
GB/T 13306 Signs
GB/T 14039-2002 Hydraulic transmission oil solid particle pollution grade code
GB/T 17446 Vocabulary of fluid transmission system and components
GB/T 17489 Hydraulic particle pollution analysis Extracting liquid samples from working system pipelines
JB/T 7858 Hydraulic component cleanliness assessment method and hydraulic component cleanliness index
3 Terms and Definitions
GB/T 17446 as well as the following terms and definitions apply to this document:
3:1
central turning joint
Connect the fixed part and the rotating part of the hydraulic excavator, so that the system pipeline of the upper and lower parts has a 360° relative rotary motion without
Interfering hydraulic and pneumatic system pipelines:
4 marks
4:1 Marking method
The central rotary joint (see Figure 1) is marked as follows:
...
