underframe
Vehicle's supporting skeleton
The underframe is the supporting framework beneath a structure, especially the chassis or floor assembly of a railway car, truck, or other vehicle.
It carries the weight and provides attachment points for wheels, suspension, and body components: The underframe showed signs of rust after years of salt exposure.
Vehicle wheel assembly
- trucksHeavy cargo vehicles
- axleShaft for wheel rotation
- wheelsCircular rotation devices
- couplerDevice linking two things
brake system · suspension · bolster · crossbearer · buffer · transom · kingpin · drawbar
Internal supportive framework
- girderMain structural support beam
- beamStructural support member
- joistHorizontal structural beam
- strutProud, showy gait
brace · truss · crossmember · longitudinal · platform · substructure · gusset · web
bogie
Vehicle wheel assembly
coupler · brake system · suspension · bolster · crossbearer · buffer · transom · kingpin · drawbar · air brake
skeleton
Internal supportive framework
strut · brace · truss · crossmember · longitudinal · platform · substructure · gusset · web · flange
- railway partsrail, rails, track, tracks, wheel
- train partsbogie, truck, trucks, wheel, wheelset
- locomotiveslocomotive, steam locomotive, diesel locomotive, electric locomotive, engine
underframesuperstructure
Construction above the base
body · upperworks · bodywork · coachwork · shell
under, frame, framework, underneath, framed, framing, frames, frameworks, frameless