Rail Vehicle Bogie Framework Integrated Box Beam Design
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Solution Overview
Problem
Existing bogie frames for rail vehicles have low disassembly and assembly efficiency due to the need for additional motor mounting seats and gearbox boom seats, and they result in an excessive height of the rail vehicle floor, affecting safety and operational efficiency.
Innovation Solution
A bogie framework that integrates a primary gearbox and a secondary gearbox within the box beam, with the motor box symmetrically disposed on both sides of the primary gearbox, forming a cross-shaped beam configuration that reduces the overall height and improves assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If motor mounting seat and gearbox boom seat are additionally provided on bogie frame, then motor and gearbox can be mounted, but disassembly and assembly efficiency decreases
Solution Approach 1:
The patent merges the motor mounting seat and gearbox boom seat into a single integrated box beam structure. The box beam simultaneously serves as the mounting platform for both the motor and gearbox, eliminating the need for separate mounting seats and reducing the number of disassembly/assembly operations required.
2Power
If motor and gearbox are mounted on bogie frame, then power transmission is enabled, but rail vehicle floor height becomes excessive
Solution Approach 1:
The patent repositions the motor and gearbox from a vertical stacking arrangement (which increases floor height) to a horizontal arrangement within the box beam structure. The motor is mounted on one side of the box beam and the gearbox on the other side, allowing power transmission while maintaining a compact vertical profile that reduces rail vehicle floor height.
3Volume of moving object
If excessive height of rail vehicle floor from ground is achieved, then motor and gearbox can be accommodated, but driving safety and rolling resistance are reduced
Solution Approach 1:
The patent transitions from a vertical accommodation approach to a horizontal arrangement within the box beam. This dimensional change allows the motor and gearbox to be accommodated without increasing the vertical height of the rail vehicle floor, thereby maintaining driving safety and reducing rolling resistance while still providing sufficient space for power transmission components.
Data Source
AI summary
Disclosed is a bogie framework of a rail vehicle and a bogie, wherein the bogie framework of the rail vehicle includes a first end beam (01), a second end beam (02) and a box beam disposed between the first end beam (01) and the second end beam (02). The box beam includes a primary gearbox (1) and a secondary gearbox (2), and the primary gearbox (1) is used for connecting a traction motor and the secondary gearbox (2). The secondary gearbox (2) is disposed between the primary gearbox (1) and the first end beam (01), as well as between the primary gearbox (1) and the second end beam (02).