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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces TB/T 3254-2011 Sanding device for locomotive and motor car. The following main technical changes have been made with respect to TB/T 3254-2011:
——Requirements for altitude are modified (see 4.1.1; 4.1.1 of Edition 2011);
——Wind source conditions are modified (see 4.1.2; 4.1.2 of Edition 2011);
——The sanding amount requirements of the sanding device for EMU are modified (see 4.2.8; 4.2.9 of Edition 2011);
——The maximum air consumption requirements for sanding for EMU are added (see 4.2.11);
——The suitable installation positions of sand boxes are added (see 4.2.12);
——The protection grade requirements of sand boxes are added (see 4.3.1.1);
——Requirements that sand level sensing device or observation window shall be set for EMUs are added (see 4.3.1.4 and 4.4.1.3);
——The requirements for sand box cover are added (see 4.3.1.3, 4.3.1.5, 4.4.1.2 and 4.4.1.3);
——The requirements for sanding pipe are modified (see 4.3.2; 4.3.2 of Edition 2011);
——The requirements for high- and low-temperature tests of gravity sanding sprayer are added (see 4.3.3.2);
——The air pressure values for performance test of differential pressure sanding device are modified (see 5.3.2; 5.2.3.2.2 of Edition 2011);
——The airtightness tests of sand box and sanding sprayer body are modified (see 5.7; Table 1 of Edition 2011);
——The abrasion resistance test of window glass is added (see 5.8);
——The pressure relief test of sand box cover is added (see 5.9);
——The low-temperature bending test of hose is added (see 5.10);
——The bending fatigue test of hose is added (see 5.11);
——The aging test of hose is added (see 5.12);
——The abrasion resistance test of hose is added (see 5.13);
——The minimum bend radius test of hose is added (see 5.14);
——The fire-proof performance test of hose is added (see 5.15);
——The insulation test of hose is added (see 5.16);
——The pressure test of hose is added (see 5.17);
——The protection grade test is added (see 5.18);
——The routine test items and type test items are modified (see Table 1 and Table 2; Table 1 and Table 2 of Edition 2011).
This standard was proposed by and is under the jurisdiction of the Technical Committee on Internal Combustion Locomotives of Standardization Administration of Railway Industry.
The previous edition of this standard is as follows: TB/T 3254-2011.
Sanding device of rolling stock
1 Scope
This standard specifies the classification and composition, technical requirements, inspection methods, inspection rules, as well as marking, packaging, transportation and storage of sanding device of rolling stock.
This standard is applicable to sanding devices of rolling stock and EMU (hereinafter referred to as sanding devices).
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 1184-1996 Geometrical tolerancing - Geometrical tolerance for features without individual tolerance indications (ISO 2768-2:1989, EQV)
GB/T 1804-2000 General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications (ISO 2768-1: 1989, EQV)
GB/T 4208-2017 Degrees of protection provided by enclosure (IP code) (IEC 60529: 2013, IDT)
GB/T 5565.2 Rubber and plastics hoses and tubing - Measurement of flexibility and stiffness - Part 2: Bending tests at sub-ambient temperatures (GB/T 5565.2-2017, ISO 10619-2: 2011, IDT)
GB/T 9867-2008 Rubber vulcanized or thermoplastic - Determination of abrasion resistance using a rotating cylindrical drum device (ISO 4649: 2002, IDT)
GB/T 13277.1-2008 Compressed air - Part 1: Contaminants and purity classes (ISO 8573-1: 2001, MOD)
GB 18045 Safety glass for railway rolling stock
GB/T 19804-2005 Welding - General tolerances for welded constructions - Dimensions for lengths and angles - Shape and position (ISO 1392: 1996, IDT)
GB/T 21413.1-2008 Railway applications - Electric equipment for rolling stock - Part 1: General service conditions and general rules (IEC 60077-1:1999, IDT)
GB/T 21563 Railway applications - Rolling stock equipment - Shock and vibration tests (GB/T 21563-2018, IEC 61373: 2010, MOD)
TB/T 3218 Air brake fitting guard for railway rolling stock
TB/T 3474.2-2018 Thread connecting hose for rolling stock - Part 2: Rubber hose
3 Classification and composition
3.1 Sanding device is divided into gravity type and differential pressure type.
3.2 Sanding device is mainly composed of sand box (including sand box cover), sanding sprayer and sanding pipe, etc.
4 Technical requirements
4.1 Service condition requirements
4.1.1 Environmental conditions
The sanding device shall operate normally under the following environmental conditions:
a) the altitude shall be 4,000m at most;
b) the environmental temperature is -40℃ to +50℃, the maximum mean relative humidity of the wettest month is no more than 95% (the mean minimum temperature of this month is +25℃);
c) there is weak acid, weak base and oils such as gasoline and mineral oil;
d) there is wind, sand, rain and snow.
Special requirements shall be determined through negotiation by the supplier and the purchaser.
4.1.2 Wind source conditions
4.1.2.1 The intake setting pressure for the sanding sprayer of rolling stock shall not be lower than 500kPa, and its compressed air quality shall not be lower than that specified in GB/T 13277.1-2008 for Class 3 solid particles, Class 3 humidity and Class 3 oil content.
4.1.2.2 The intake setting pressure for the sanding sprayer of EMU shall not be lower than 270kPa, and its compressed air quality shall not be lower than that specified in GB/T 13277.1-2008 for Class 3 solid particles, Class 3 humidity and Class 4 oil content.
4.2 Basic requirements
4.2.1 All components and accessories (including electrical elements) of sanding device shall be assembled and manufactured according to the product drawings and technical documents approved by the prescribed procedures. The same parts shall be interchangeable.
4.2.2 All parts shall be free from defects such as cracks, air holes, sand holes, burrs, fins, scale and rust on the surface.
4.2.3 The unnoted tolerances of linear and angular dimensions of machined parts shall meet the requirements of Class m in GB/T 1804-2000.
4.2.4 The unnoted shape and position tolerances of parts shall meet the requirements of Class K in GB/T 1184-1996.
4.2.5 The unnoted tolerances of linear and angular dimensions and unnoted shape and position tolerances of welding parts shall meet the requirements of Class B and Class F in GB/T 19804-2005.
4.2.6 During the installation of the sanding device, all parts shall be connected reliably, and anti-looseness measures shall be taken when connecting threads.
4.2.7 Sanding device can cooperate with the control device of rolling stock to carry out automatic sanding or manually controlled sanding.
4.2.8 Sanding device shall be able to spread sand evenly. The sanding device of rolling stock shall spread sand at the amount of 0.3L/min to 0.7L/min, and the sanding device of EMU shall spread sand at the amount of 500g/30s to 1,000g/30s under 450kPa sanding pressure.
4.2.9 Requirements of sand for sanding devices are given in Annex A.
4.2.10 Corresponding grade in GB/T 21563 shall be selected for the impact and vibration performance of the sanding device according to the installation position.
4.2.11 The maximum air consumption of each sanding device of EMU shall not be greater than 250NL/min during sanding and 25NL/min during drying.
4.2.12 The sand box should be mounted on the car body.
Foreword i
1 Scope
2 Normative references
3 Classification and composition
4 Technical requirements
5 Inspection methods
6 Inspection rules
7 Marking, packaging, transportation and storage
Annex A (Normative) Sand requirements
