Lightweight swing arm positioning bogie

CN224297176UActive Publication Date: 2026-05-29SIMIKE MASCH NANJING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SIMIKE MASCH NANJING CO LTD
Filing Date
2025-08-18
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing rail transit bogies suffer from problems such as excessive weight, limited material application, structural design defects, complex manufacturing processes, and high maintenance costs, making it difficult to achieve a balance between lightweighting and strength.

Method used

The main body of the side beam is made of carbon fiber reinforced composite material and titanium alloy 3D printing, the swing arm body is made of aluminum alloy forging, and the lightweight axle box is made of magnesium alloy casting. It is combined with rubber pads, adjustable damping arms and micro hydraulic cylinders to optimize the structural design and manufacturing process.

Benefits of technology

This achieves lightweight bogies, reduces wheel-rail dynamic forces, extends service life, lowers energy consumption and maintenance costs, and improves operational stability and safety.

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Abstract

The utility model discloses a kind of lightweight rotary arm positioning bogies, it is related to the design and manufacturing technical field of railway vehicle bogie, including side beam main body, the middle part inner surface of side beam main body is provided with sliding connecting block, and side beam main body is made of carbon fiber reinforced composite material multilayer extrusion, and sliding connecting block is made of titanium alloy 3D printing, the upper surface of the sliding connecting block is provided with rubber pad one, and the outer surface of sliding connecting block is slidably installed with main crossbeam. Compared with the existing ordinary bogie, the lightweight rotary arm positioning bogie solves the problems of excessive spring-down mass, material application limitations, structure optimization and lightweight synergy difficulties, manufacturing process innovation needs, full life cycle performance improvement, etc., and has essential differences with existing technology in systematic lightweight design concept, material application scheme, structure optimization method, manufacturing process integration, intelligent maintenance design, etc., achieving collaborative breakthroughs in multiple aspects of bogie.
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