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GB/T 25024-2019Bogies for rolling stock - Bogies for railway wagons (English PDF)

机车车辆转向架货车转向架

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Issued by

State Administration for Market Regulation; Standardization Administration of China

Level / Type

National · Recommended

Issue date

May 10, 2019

Implementation date

December 1, 2019

Scope

GB/T 25024-2019 is the English-translated version of 机车车辆转向架货车转向架.

GB/T 25024-2019 covers bogies for newly built standard gauge railway wagons whose highest running speed is 120 km/h or less.

It describes the four main structures - frame-brace, swing, sub-frame radial and frame bogies - and the parts each is built from, then sets the basic requirements and the technical requirements for materials, manufacture, coating and assembly, naming the steels, springs, wheelsets, bearings, brake gear, wear plates and side bearings to be used and the standard each has to meet.

It gives the inspection methods for limitation bounds, strength and dynamic behaviour, the inspection rules with ex-factory and type inspection, and the marking, transportation and storage.

It cites GB 146.1, several GB/T steel and tolerance standards and eighteen TB/T railway standards. It replaces GB/T 25024-2010, was issued on 10 May 2019 and has applied since 1 December 2019.

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Document preview — GB/T 25024-2019

National Standard of the People's Republic of China

ICS: 45.060.01
Classification: S 36
Replacing: GB/T 25024-2010

Issued by: State Administration for Market Regulation; Standardization Administration of China

Foreword3
1 Scope5
2 Normative References5
3 Terms and Definitions7
4 Main Structure9
4.1 Frame-brace Bogie9
4.2 Swing Bogie9
4.3 Sub-frame Radial Bogie9
4.4 Frame Bogie9
5 Basic Requirements10
6 Technical Requirements11
6.1 Material Requirements11
6.2 Manufacturing Requirements12
6.3 Coating Requirements13
6.4 Assembly Requirements14
7 Inspection Methods15
7.1 Inspection of Limitation Bounds15
7.2 Strength Test15
7.3 Dynamic Test16
8 Inspection Rules16
8.1 Inspection Classification16
8.2 Exit-factory Inspection16
8.3 Type Inspection16
9 Marking, Transportation and Storage17

1 Scope

This Standard stipulates the terms, definitions, main structure, basic requirements, technical requirements, inspection methods, inspection rules, marking, transportation and storage of bogie for standard gauge railway wagon.

This Standard is applicable to bogie for newly built standard gauge railway wagon, whose highest running speed is less than, or equals to 120 km/h.

2 Normative References

The following documents are indispensable to the application of this document. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document.

GB 146.1 Rolling Stock Gauge for Standard Gauge Railways

GB/T 699 Quality Carbon Structural Steels

GB/T 700 Carbon Structural Steels

GB/T 714 Structural Steel for Bridge

GB/T 1184-1996 Geometrical Tolerancing - Geometrical Tolerance for Features without Individual Tolerance Indications

GB/T 1222 Spring Steels

GB/T 1591 High Strength Low Alloy Structural Steels

GB/T 1804-2000 General Tolerances - Tolerances for Linear and Angular Dimensions without Individual Tolerance Indications

GB/T 3077 Alloy Structure Steels

GB/T 3278 Hot-rolled Carbon Tool Steel Sheets and Plates

GB/T 3280 Cold Rolled Stainless Steel Plate, Sheet and Strip

GB/T 3672.1-2002 Rubber - Tolerances of Products - Part 1: Dimensional Tolerances

TB/T 1979 Atmospheric Corrosion Resisting Steel for Railway Rolling Stock

TB/T 2211 Steel Helical Spring of Suspension Mechanism for Rolling Stock

TB/T 2235 Rolling Bearing in the Railway Passenger Car and Wagon

TB/T 2403 Brake Shoes for Freight Rolling Stock of Railways

TB/T 2429 Technical Condition of Foundation Brake Gear Used in Railway Truck Bogie

TB/T 2813 Friction Damper Wedge for Freight Car

TB/T 2817 Technical Specification of Wrought Steel Solid Wheel for Railway Freight Car

TB/T 2843 General Technical Requirement for Rolling Stock Rubber to Metal Parts

TB/T 2911 General Technical Specification of Riveting Process for Railway Vehicle

TB/T 2942 General Technical Specifications of Steel Castings for Rolling Stock

TB/T 2944 Carbon Steel Forgings for Railway

TB/T 2945 Technical Specification for LZ50 Steel Shaft and Steel Billet for Railway Vehicle

TB/T 3012 Specification of Cast Steel Bolster and Side Frame for Railway Freight Car

TB/T 3014 Alloy Steel Forgings for Railway

TB/T 3225 Cross Bar Composition for Railway Freight Car

TB/T 3267 Adapter on Railway Freight Car

TB/T 3269 Elastic Side Bearings for Railway Freight Wagons

TB/T 3270 Center Wear Plate of Railway Freight Wagons

3 Terms and Definitions

What is defined in GB/T 4549.2-2004, and the following terms and definitions are applicable to this document.

3.1 Frame-brace Bogie

Frame-brace bogie refers to three-piece cast steel bogie, which implements elastic

Frame Bogie

Frame bogie refers to a running gear, which generally sets up components like wheelsets axle box device, suspension damping device and foundation brake gear; adopts bogie frame as the installation foundation of various components; bears vehicle body and loading weight; rotates in relative to the vehicle body.

NOTE: definition 2.17 in GB/T 4549.2-2004 is modified.

3.10 Bogie Frame

Bogie frame refers to a basic bearing structure, which is between the primary and secondary suspension device, and implements the transmission of force from vehicle body to wheel and axle.

NOTE: definition 3.1 in GB/T 4549.2-2004 is modified.

4 Main Structure

4.1 Frame-brace Bogie

Frame-brace bogie belongs to three-piece cast steel bogie. It is mainly constituted of adapter, elastic positioning member, wheel and axle, side frame, central spring suspension device, swing bolster, basic braking device, frame-brace device and elastic side bearing, etc. In accordance with difference in the location of frame-brace device and swing bolster, frame-brace bogie can be divided into lower frame-brace bogie and central frame-brace bogie.

4.2 Swing Bogie

Swing bogie belongs to three-piece cast steel bogie. It is mainly constituted of adapter, pedestal rocker seat (primary elastic swing device), wheel and axle, side frame, central spring suspension device, swing bolster, spring plank, rocker seat, rocker seat bearing, foundation brake gear and elastic side bearing, etc.

4.3 Sub-frame Radial Bogie

Sub-frame radial bogie refers to three-piece self-guided radial bogie. It is mainly constituted of wheel and axle, side frame, central spring suspension device, swing bolster, foundation brake gear, primary rubber-metal pad, wheelsets radial device and elastic side bearing, etc.

4.4 Frame Bogie

Frame bogie is a bogie, with the frame of an integral structure, which is brought together through rigid connection. It is mainly constituted of bogie frame, wheelsets axle box (axle box suspension device), foundation brake gear, traction device and elastic side bearing, etc. Generally speaking, bogie frame is integrally welded through steel plates.

5 Basic Requirements

g) The clearance of the inner and outer ring round spring in the radial direction should not be less than 2.5 mm; the minimum shall not be less than 1.5 mm;

h) In terms of bogie which has a damping device, spring's deflection margin coefficient shall be more than, or equals to 0.7. In terms of bogie which does not have a damping device, spring's deflection margin coefficient shall be more than, or equals to 0.9.

6 Technical Requirements

6.1 Material Requirements

6.1.1 Quality carbon structural steels shall comply with the stipulations in GB/T 699.

6.1.2 Carbon structural steels shall comply with the stipulations in GB/T 700.

6.1.3 Alloy structural steels shall comply with the stipulations in GB/T 3077 and relevant standards.

6.1.4 Low-alloy high-strength structural steels shall comply with the stipulations in GB/T 1591.

6.1.5 Structural steel for bridge shall comply with the stipulations in GB/T 714.

6.1.6 Atmospheric corrosion resisting steel shall comply with the stipulations in TB/T 1979.

6.1.7 Spring steels shall comply with the stipulations in GB/T 1222 and TB/T 2211.

6.1.8 Cold rolled stainless steel plate shall comply with the stipulations in GB/T 3280.

6.1.9 Carbon tool steel plate shall comply with the stipulations in GB/T 3278.

6.1.10 Seamless steel tubes for structural purposes shall comply with the stipulations in GB/T 8162.

6.1.11 Carbon steel castings for general engineering purpose shall comply with the stipulations in GB/T 11352.

6.1.12 Non-metallic materials shall comply with the stipulations of relevant standards.

6.1.13 The mechanical property of steel for bogie frame shall comply with the follows:

a) Impact absorption energy (KV2) (- 40 °C) shall be more than or equals to 27 J;

b) Elongation at break (A) shall be more than or equals to 19%.

6.2 Manufacturing Requirements

6.2.16 Wheelsets assembly shall comply with the stipulations in TB/T 1718.2.

6.2.17 Bearing pressing shall comply with the stipulations in product drawings and relevant standards.

6.2.18 Foundation brake gear shall comply with the stipulations in TB/T 2429.

6.2.19 Brake shoes shall comply with the stipulations in TB/T 2403 and relevant drawings.

6.2.20 Assembled brake beam shall comply with the stipulations in TB/T 1978.

6.2.21 Friction damper wedge shall comply with the stipulations in TB/T 2813.

6.2.22 Cylindrical helical spring shall comply with the stipulations in TB/T 2211.

6.2.23 Adapter and elastic positioning member shall comply with the stipulations in TB/T 3267 and relevant standards.

6.2.24 Plane lower center plate shall comply with the stipulations in TB/T 46; spherical center plate shall comply with the stipulations in product drawings.

6.2.25 Center wear plate shall comply with the stipulations in TB/T 3270.

6.2.26 Elastic side bearings shall comply with the stipulations in TB/T 3269 and relevant standards.

6.2.27 Cross bar composition shall comply with the stipulations in TB/T 3225 and relevant standards.

6.2.28 Components like side frame column wear plate, axle box rubber spring, axle box longitudinal elastic cushion, axial rubber blanket, spring plank, rocker seat, pedestal rocker seat, rocker seat bearing, rubber-metal pad, wheelsets radial device, brake pin sleeve, brake shoe key and brake shoe ring shall comply with the stipulations in relevant stipulations.

6.3 Coating Requirements

6.3.1 Before coating, impurities (such as: oil stain, rust and electric welding splash) on the surface of various components shall be eliminated.

6.3.2 Non-working outer surface of bogie frame shall paint anti-corrosive primer and top-coat, or, one coat for bottom and surface. The surface of forgings, structural steels, steel plate elements and profiled parts (except from friction pair parts) shall paint anti-corrosive primer and top-coat, or, one coat for bottom and surface. The internal and external surface of steel castings, center pins and wheel web, the axle body part

6.4 Assembly Requirements

hole). Other parts shall not smear lubricating grease. When there are special requirements, implement product drawings.

6.4.11 After brake shoe key is assembled, brake shoe ring shall be installed.

6.4.12 The effect of foundation brake gear in braking and remission shall be flexible.

The allowance of brake beam's safety chain shall satisfy the requirements of braking and remission in the application on vehicles.

6.4.13 The assembly of integrated brake gear shall comply with the stipulations in relevant standards.

6.4.14 The direction of side bearing assembly: in terms of the same bogie: opposite direction; in terms of the same vehicle: same side, same direction.

6.4.15 In the assembly of center wear plate, impurities in the lower center plate shall be eliminated.

6.4.16 During the assembly, no electric current is allowed to pass through rolling bearing.

7 Inspection Methods

7.1 Inspection of Limitation Bounds

Inspection of limitation bounds of bogie shall comply with the stipulations in GB/T 16904.1.

7.2 Strength Test

7.2.1 Strength test and stiffness test of key components of bogie shall comply with the stipulations in TB/T 1335 and relevant standards.

7.2.2 Static load and fatigue test of swing bolster and side frame shall comply with the stipulations in TB/T 1959 and relevant standards.

7.2.3 Static load and fatigue test of steel spring shall comply with the stipulations in TB/T 2211.

7.2.4 Static load and fatigue test of combined-type brake beam shall comply with the stipulations in TB/T 1978.

7.2.5 Stiffness test and fatigue test of elastic positioning members shall comply with the stipulations in TB/T 3267 and relevant standards.

7.2.6 Stiffness test and fatigue test of elastic side bearing shall comply with the stipulations in TB/T 3269 and relevant standards. […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

Referenced standards

Normative references

TB/T 2235 · TB/T 2403 · TB/T 2429 · TB/T 2813 · TB/T 2817 · TB/T 2911 · TB/T 2942 · TB/T 2944 · TB/T 2945 · TB/T 3012 · TB/T 3014 · TB/T 3225 · TB/T 3267 · TB/T 3269 · TB/T 3270

Cited by

GB/T 5600-2018General technical specification for railway freight cars

Similar standards

GB/T 25024-2010|GB/T 5599-2019|GB/T 21563-2018|GB/T 16904.1-2006|GB/T 15165-1994|GB/T 12818-2021

Editions of GB/T 25024

Edition	Title	Revision	Status
GB/T 25024-2019	Bogies for rolling stock - Bogies for railway wagons	first revision	Current
GB/T 25024-2010	Bogies for rolling stock - Bogies for railway wagons	first issue	Superseded

This page sells the current edition, GB/T 25024-2019. Earlier editions are listed for reference only.

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