Underframes TRIZ Cases
- Rail Vehicle Side Body Pier Reinforcement
Diagonal reinforcing bodies on side body piers enhance vertical bending rigidity without increasing mass or interfering with infrastructure equipment.
- Hinged Underframe Structure for Articulated Train Bogie Mounting
Modular hollow aluminum profiles create a concave underframe that accommodates 4-point suspension bogies while maintaining structural strength.
- Railway Vehicle Center Pin Mounting Frame for Improved Connecting Strength
- Railroad Truck Bolster with Enlarged Brake Rod Apertures
Enlarged brake rod apertures and internal shear reinforcements reduce stress concentrations to extend fatigue life in railroad car truck bolsters.
- Train Suspension Control via Triangular Air Spring Valves
Three height adjusting valves control air spring pressure to stabilize train body posture.
- Rail Vehicle Cross Member Thermal Stress Management
Cross member absorbs thermal expansion forces through localized pivot plate adjustments, reducing stress on fastening means during temperature fluctuations.
- Railcar Bogie Separation via Detachable Level Valve
Segmenting the automatic level controlling valve from the interface plate allows independent bogie maintenance while maintaining air supply connectivity.
- Constant Contact Side Bearing Extended Height Design
Extended constant contact side bearing housing accommodates longer resilient members, reducing wear on rail components under operational stresses.
- Guideway Vehicle Height Adjustment via Integrated Displacement
Integrates relative displacement measurements at multiple bogie positions to adjust bolster spring elastic force for precise vehicle height control.
- Railcar Underframe Attaching Metal Fitting for Weight Reduction
A railcar underframe attaching metal fitting uses upper and lower members to secure underfloor devices.
- Double-Deck Rail Vehicle Asymmetric Door Layout
Asymmetric intermediate deck doors maximize usable area while managing stair clear height constraints.
- Railway Floor Height Control via Secondary Suspension Adjustment
A secondary suspension system adjusts floor height to match platform levels.
- Closed-Section Stringer for Autorack Deck Corrosion
A closed-section stringer design prevents debris accumulation on autorack decks.
- Heat Resistant Rail Floor Assembly with Composite Fire Panel
Composite fire protection panel beneath metallic floor withstands 850°C heat, preventing aluminum melting and maintaining structural integrity.