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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 25024-2010 General technical specification for two-axle bogie for railway freight wagon. In addition to a number of editorial changes, the following technical changes have been made with respect to GB/T 25024-2010:
——the scope of this standard is modified (see Clause 1; Clause 1 of Edition 2010);
——the terms and definitions are added (see Clause 3);
——main structure of the bogie is added (see Clause 4);
——requirements for the operating ambient temperature of non-metal parts such as rubber and nylon are modified (see Sub-clause 5.2; Sub-clause 3.2 of Edition 2010);
——anti-off requirements for the brake beam, lower tie bar, cross bar and cross beam are added (see Sub-clause 5.6);
——some design parameters of the bogie are modified (see Sub-clause 5.8; Sub-clause 3.7 of Edition 2010);
——some requirements for materials, manufacturing and assembling of the bogie and its parts are modified (See Clause 6; Clause 4 of Edition 2010);
——strength test methods for critical parts of the bogie are modified (see Sub-clause 7.2; Sub-clause 5.2 of Edition 2010);
——requirements for marking, transportation and storage of the bogie are added (see Clause 9).
This standard was proposed by the National Railway Administration of the People's Republic of China.
The previous edition of this standard is as follow:
——GB/T 25024-2010.
Bogie for rolling stock - Bogie for railway wagon
1 Scope
This standard specifies terms and definitions, main structure, basic requirements, technical requirements, inspection methods, inspection rules as well as marking, transportation and storage of the bogie for standard-gauge railway wagon.
This standard is applicable to the bogie for new standard-gauge railway wagons with a maximum operating speed of less than or equal to 120 km/h.
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 146.1 Rolling stock gauge for standard gauge railways
GB/T 699 Quality carbon structure steels
GB/T 700 Carbon structural steels
GB/T 714 Structural steel for bridge
GB/T 1184-1996 Genometrical tolerancing - Geometrical tolerances 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
GB/T 3672.2-2002 Rubber - Tolerances of products - Part 2: Geometrical tolerances
GB/T 4549.2-2004 Railway vehicle vocabulary - Part 2: Running gear
GB/T 5599 Railway vehicles - Specification for evaluation the dynamic performance and accreditation test
GB/T 6414-2017 Castings - System of dimensional tolerances and machining allowances
GB/T 8162 Seamless steel tubes for structural purposes
GB/T 11345 Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and assessment
GB/T 11352 Carbon steel castings for general engineering purpose
GB/T 15055 Permissible stamping variations in dimensions without tolerance indication
GB/T 16904.1 Checking of rolling stock clearance for standard gauge railways - Part 1: Methods for inspecting
GB/T 29712 Non-destructive testing of welds - Ultrasonic testing - Acceptance levels
TB/T 46 Railway vehicle center plate
TB/T 1010 Wheelset of railway vehicles - Type and basic dimensions
TB/T 1013 Carbon cast steel wheel
TB/T 1335 Specification for strength design and test appraisement for railway rolling stock
TB/T 1465 General specification of spheroidal graphite castings for rolling stock
TB/T 1558.4 Non-destructive testing of welding for rolling stock - Part 4: Magnetic particle testing
TB/T 1718.2 Wheelsets assembly for locomotive and rolling stock - Part 2: Railway rolling stock
TB/T 1959 Static load and fatigue test of bolster and side frame for railway freight car
TB/T 1978 Assembled brake beam for railway freight car
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 passanger car and wagon
TB/T 2403 Brake shoes for freight rolling stock of railways
TB/T 2429 Technical specification of foundation braking device for the bogie of the freight rolling stock of railways
TB/T 2813 Friction damper wedge for freight car
TB/T 2817 Wrought steel solid wheel for railway car
TB/T 2843 General technical specification for elastic parts for railways
TB/T 2911 General technical specification of riveting process for railway
TB/T 2942 General technical specifications of steel castings for rolling stock
TB/T 2944 Carbon steel forgings for railways
TB/T 2945 Specifications of steel LZ50 axle and billet for rolling stock
TB/T 3012 Cast steel bolster and side frame for railway freight car
TB/T 3014 Alloy steel forging for railways
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
For the purposes of this document, the terms and definitions established in GB/T 4549.2-2012 and the following ones apply.
3.1
frame-brace bogie
the cast steel three-piece bogie that two side frames are elastically connected by the frame-brace device in the horizontal plane, and the control over the diamonding between the two side frames is realized
Note: it is a revision of Definition 2.16 in GB/T 4549.2-2004.
3.2
frame-brace device
two pieces of bars and elastic connecting parts that two side frames are elastically connected in the horizontal plane, and the diamonding between the side frames are realized
3.3
swing-motion bogie
the bogie that two side frames can be synchronously and laterally swung
Note: it is a revision of Definition 2.12 in GB/T 4549.2-2004.
3.4
spring plank
the member that connects the rocker seat on the two side frames and bears the spring, so that the two side frames are synchronously and laterally swung
3.5
rocker seat
the member for supporting the spring pallet and being mounted on the rocker seat support, so that two side frames can be swung synchronously
3.6
pedestal rocker seat
a member installed between the adapter and the side frame to provide a support point for the swing of the side frame
3.7
sub-frame radial bogie
the bogie that takes advantage of the creep force generated between the wheelsets when the vehicle enters into the curve and makes the wheelset tend to be in a radial arrangement on the curve by the action of the wheelsets radial device consisting of the sub-frame radial bogie
Note: it is a revision of Definition 2.9.1 in GB/T 4549.2-2004.
3.8
wheelsets radial device
the mechanism that connects the front and rear wheelsets, so that the wheelsets tend to be in a radial arrangement on the curve
3.9
frame bogie
the running gear that is generally equipped with wheelsets axle box device, suspension damper device, foundation braking device and other parts and takes a bogie frame as a mounting base for each part to support the vehicle body and loading weight, which can be turned with respect to the vehicle body
Note: it is a revision of Definition 2.17 in GB/T 4549.2-2004.
3.10
bogie frame
the foundation bearing structure between the primary and secondary suspensions that enables the transmission of force from the vehicle body to the wheel axle.
Note: it is a revision of Definition 3.1 in GB/T 4549.2-2004.
4 Main structure
4.1 Frame-brace bogie
The frame-brace bogie, a tree-piece cast steel bogie, mainly consists of adapter, elastic locating piece, wheel axle, side frame, central spring suspension device, bolster, foundation braking device, frame-brace device and elastic side bearing, etc. Depending on the position of the frame-brace device and the bolster, it is divided into a lower frame-brace bogie and a middle frame-brace device.
4.2 Swing-motion bogie
The swing-motion bogie, a three-piece cast steel bogie, mainly consists of an adapter, a pedestal rocker seat (a series of elastic swinging devices), an axle, a side frame, a central spring suspension device, a bolster, a spring pallet, a rocker seat, a rocker seat support, a foundation braking device, an elastic side bearing, etc.
4.3 Sub-frame radial bogie
The sub-frame radial bogie, a self-steering three-piece bogie, mainly consists of a wheel axle, a side frame, a central spring suspension device, a bolster, a foundation braking device, primary rubber piles, a wheel pair radial device and an elastic side bearing, etc.
