1 Scope
This standard specifies the general technical rules of design and manufacturing for coal mining machine hydraulic system.
This standard is applicable to the hydraulic system of coal mining machinery taking hydraulic oil (liquid) as working medium at a nominal pressure of no greater than 31.5MPa .
2 Normative References
The following normative documents contain provision which, through reference in this text, constitute provisions of this national standard. For dated reference, subsequent amendments to (excluding amending error in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document referred to applies.
GB/T 786.1-1993 Fluid Power Systems and Components - Graphic Symbols and Circuit Diagrams - Part 1: Graphic Symbols (neg ISO 1219-1:1991)
GB/T 3766-2001 Hydraulic Fluid Power-General Rules Relating to Systems (eqv ISO 4413:1998)
GB 3836.1-2000 Electrical Apparatus for Explosive Gas Atmosphere - Part 1: general requirements (eqv IEC 60079-0:1998)
GB 3836.2-2000 Electrical Apparatus for Explosive Gas Atmospheres - Part 1: Flameproof Enclosure "d" (eqv IEC 60079-1:1990)
GB 3836.4-2000 Electrical Apparatus for Explosive Gas Atmospheres - Part 4: Intrinsic Safety "i" (eqvrIEC 60079-11:1999)
ISO 1219-2:1995 Fluid Power Systems and Components - Graphic Symbols and Circuit Diagrams - Part 2: Circuit Diagrams
3 Requirements
Contents
1 Scope
2 Normative References
3 Requirements
4 System Design
5 Energy Conversion Components
6 Hydraulic Valve
7 Hydraulic Fluid and Regulating Components
8 Pipeline System
9 Control System
10 Diagnosing and Monitoring
11 Cleaning and Painting
12 Transporting Preparation
13 Test
14 Marking Explanation (by Reference of this Standard)
