Thread connecting hose for rolling stock - Part 2: Rubber hose
1 Scope
This part specifies the type, dimension and designation as well as technical requirements, inspection methods, inspection rules, marking, packaging, transport and storage of thread connecting rubber hose for rolling stock (hereinafter referred to as “rubber hose”).
It is applicable to rubber hoses used in oil, water and air pipeline systems of rolling stocks, passenger trains, freight trains and EMUs.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 528 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties
GB/T 531.1 Rubber vulcanized or thermoplastic - Determination of indentation hardness - Part 1: Durometer method (Shore hardness)
GB/T 1184 Geometrical tolerancing - Geometrical tolerances for features without individual tolerance indications
GB/T 1220-2007 Stainless steel bars
GB/T 1682 Rubber, vulcanized - Determination of low-temperature brittleness - Single test piece method
GB/T 1690 Rubber, vulcanized or thermoplastic - Determination of the effect of liquids
GB/T 1804 General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications
GB/T 3512 Rubber, vulcanized or thermoplastic - Accelerated ageing and heat resistance tests - Air-oven method
GB/T 5563 Rubber and plastics hoses and hose assemblies - Hydrostatic testing
GB/T 5564 Rubber and plastics hoses - Subambient temperature flexibility tests
GB/T 5568 Rubber or plastics hoses and hose assemblies - Hydraulic-pressure impulse test without flexing
GB/T 7306.2 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads - Part 2: Taper internal and external threads
GB/T 12721 Rubber hoses - Determination of abrasion resistance of the outer cover
GB/T 14905 Rubber and plastics hoses - Determination of adhesion between components
GB/T 24134-2009 Rubber and plastics hoses - Assessment of ozone resistance under static conditions
TB/T 3218 Air brake fitting guard for railway rolling stock
3 Type, dimension and designation
3.1 Type and dimension
3.1.1 The rubber hose is composed of joint nut, core tube, sleeve and hose. Its structural form is shown in Figure 1; the structural form of metal-jacket rubber composite hose is shown in Figure 2. The end joint dimensions L1 and L2 of the rubber hose are shown in Annex A.
3.1.2 According to the connection mode between the joint and the hose, the rubber hose can be divided into thread compression type and extruded connection type.
Foreword i
1 Scope
2 Normative references
3 Type, dimension and designation
3.1 Type and dimension
3.2 Designation
4 Technical requirements
4.1 General requirements
4.2 Material requirements
4.3 Manufacturing requirements
4.4 Assembling requirements
4.5 Performance requirements
5 Inspection methods
5.1 Appearance and dimension inspection
5.2 Strength test
5.3 Sealing test
5.4 Test on adhesive force of rubber layer
5.5 Low-temperature flexibility test
5.6 Bending fatigue test
5.7 Joint pull-out test
5.8 High-temperature test
5.9 Burst pressure test
5.10 Static ozone cracking resistance of outer rubber layer
5.11 Ultraviolet resistance fatigue test
5.12 Minimum bend radius test
5.13 Oil resistance test of inner rubber layer
5.14 Ball-passing test
5.15 Fire test
5.16 Impulse test
5.17 Vacuum resistance test
5.18 Abrasion resistance test
5.19 Medium resistance test
6 Inspection rules
6.1 Inspection classification
6.2 End-of-manufacturing inspection
6.3 Type inspection
7 Marking, packaging, transport and storage
7.1 Marking
7.2 Packaging
7.3 Transport
7.4 Storage
Annex A (Informative) Example of type and dimension of joints, hoses and core tubes
Annex B (Normative) Physical and mechanical properties of hose materials
Thread connecting hose for rolling stock - Part 2: Rubber hose
1 Scope
This part specifies the type, dimension and designation as well as technical requirements, inspection methods, inspection rules, marking, packaging, transport and storage of thread connecting rubber hose for rolling stock (hereinafter referred to as “rubber hose”).
It is applicable to rubber hoses used in oil, water and air pipeline systems of rolling stocks, passenger trains, freight trains and EMUs.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 528 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties
GB/T 531.1 Rubber vulcanized or thermoplastic - Determination of indentation hardness - Part 1: Durometer method (Shore hardness)
GB/T 1184 Geometrical tolerancing - Geometrical tolerances for features without individual tolerance indications
GB/T 1220-2007 Stainless steel bars
GB/T 1682 Rubber, vulcanized - Determination of low-temperature brittleness - Single test piece method
GB/T 1690 Rubber, vulcanized or thermoplastic - Determination of the effect of liquids
GB/T 1804 General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications
GB/T 3512 Rubber, vulcanized or thermoplastic - Accelerated ageing and heat resistance tests - Air-oven method
GB/T 5563 Rubber and plastics hoses and hose assemblies - Hydrostatic testing
GB/T 5564 Rubber and plastics hoses - Subambient temperature flexibility tests
GB/T 5568 Rubber or plastics hoses and hose assemblies - Hydraulic-pressure impulse test without flexing
GB/T 7306.2 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads - Part 2: Taper internal and external threads
GB/T 12721 Rubber hoses - Determination of abrasion resistance of the outer cover
GB/T 14905 Rubber and plastics hoses - Determination of adhesion between components
GB/T 24134-2009 Rubber and plastics hoses - Assessment of ozone resistance under static conditions
TB/T 3218 Air brake fitting guard for railway rolling stock
3 Type, dimension and designation
3.1 Type and dimension
3.1.1 The rubber hose is composed of joint nut, core tube, sleeve and hose. Its structural form is shown in Figure 1; the structural form of metal-jacket rubber composite hose is shown in Figure 2. The end joint dimensions L1 and L2 of the rubber hose are shown in Annex A.
3.1.2 According to the connection mode between the joint and the hose, the rubber hose can be divided into thread compression type and extruded connection type.
Contents of TB/T 3474.2-2018
Foreword i
1 Scope
2 Normative references
3 Type, dimension and designation
3.1 Type and dimension
3.2 Designation
4 Technical requirements
4.1 General requirements
4.2 Material requirements
4.3 Manufacturing requirements
4.4 Assembling requirements
4.5 Performance requirements
5 Inspection methods
5.1 Appearance and dimension inspection
5.2 Strength test
5.3 Sealing test
5.4 Test on adhesive force of rubber layer
5.5 Low-temperature flexibility test
5.6 Bending fatigue test
5.7 Joint pull-out test
5.8 High-temperature test
5.9 Burst pressure test
5.10 Static ozone cracking resistance of outer rubber layer
5.11 Ultraviolet resistance fatigue test
5.12 Minimum bend radius test
5.13 Oil resistance test of inner rubber layer
5.14 Ball-passing test
5.15 Fire test
5.16 Impulse test
5.17 Vacuum resistance test
5.18 Abrasion resistance test
5.19 Medium resistance test
6 Inspection rules
6.1 Inspection classification
6.2 End-of-manufacturing inspection
6.3 Type inspection
7 Marking, packaging, transport and storage
7.1 Marking
7.2 Packaging
7.3 Transport
7.4 Storage
Annex A (Informative) Example of type and dimension of joints, hoses and core tubes
Annex B (Normative) Physical and mechanical properties of hose materials
