GB/T 25334.1-2023 in English

VALID

Railway locomotive carbody—Part 1: Diesel locomotive

Issued on:2023-09-07
Implemented on:2024-01-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 25334.1-2023
Document status:	VALID
Title in English:	Railway locomotive carbody—Part 1: Diesel locomotive
Title in Chinese:	铁路机车车体第1部分:内燃机车
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2023-09-07
Implemented on:	2024-01-01
Superseding:	GB/T 25334.1-2010 Technical specification for railway locomotive car body—Part 1:Diesel locomotive car body
ICS Classification:	45.060.10-Tractive stock
Chinese Classification:	S42-Diesel locomotives
Professional Classification:	GB-National Standard
Related Keywords:	diesel locomotive body railway diesel new railway diesel locomotive carbody part diesel engines
Related Topics:	GB/T 25334.1 GB/T 25334.1-2010 Forms of iron bound in the body Diesel locomotive fuel tank Railway internal combustion engine oil requirements

《GB/T 25334.1-2023铁路机车车体第1部分:内燃机车》由347（国家铁路局）归口，主管部门为国家铁路局。

Introduction

GBT 25334.1—2023 Standard Background and Significance

GBT 25334.1—2023 is the latest national standard in the field of railway diesel locomotive body technology, replacing the old version of the standard in 2010. This standard mainly stipulates the environmental conditions, classification and composition, technical requirements, test methods, etc. of diesel locomotive body, and is applicable to new railway diesel locomotives with a standard track gauge of $1435\mathrm{mm}$ and diesel engines as power.

Standard Framework Comparison Table

Chapter	Content of the new standard	Main changes of the old standard
Scope (6.1)	Added the classification and composition of diesel locomotive body, clarified the scope of application and technical requirements.	Adjusted the definition of environmental conditions, and added vehicle manufacturing acceptance requirements.
Technical Requirements (6.2)	Added locomotive vibration modal test and snowplow performance test methods.	Deleted some structural dimension requirements in the old version, and added material fire retardant specifications.
Materials and Coating (6.3-6.6)	Added new requirements for the limit of harmful substances in interior materials and optimized the coating process of the vehicle body surface.	Revised the technical standard requirements for materials such as aluminum alloy and ductile iron.

Case analysis in practical application

Taking the design of locomotive pedals and handrails as an example, the new standard requires that they must be convenient for getting on and off the vehicle and for shunting operations. In actual manufacturing, a company once increased the product rework rate by 5% due to failure to meet this requirement. By optimizing the ergonomic design, the product finally met the requirements of GB/T 25334.1—2023 and improved user satisfaction.

Implementation recommendations

Material selection and procurement: Strictly follow the material requirements in the standards, establish a complete supplier evaluation system, and ensure that the fire protection and hazardous substance limits of non-metallic materials meet the regulations.
Manufacturing process optimization: For the integral load-bearing body, it is recommended to use digital assembly welding technology and strengthen the cleanliness control of the ventilation duct. For the chassis assembly, it is recommended to use a three-dimensional laser measurement system for precision testing.
Test method improvement: Introduce virtual prototype technology for vibration modal simulation analysis to reduce the number of physical tests while improving efficiency. At the same time, it is recommended to calibrate the test equipment regularly to ensure data accuracy.

More samples: JJG 21-2008 DL/T 368-2010 GB 50021-2001(2009)

Sample only — not a preview of GB/T 25334.1-2023