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14Elevator· all 15▼
←→ Made by @elvar_official
Why can a small motor lift a heavy car, and what holds it if the ropes go? Press the steps, or wait and the machine runs them by itself.×3
1,360 kg2123800 kg10 persons50 kg50 kg50 kg50 kgTILES50 kgTILES50 kgTILESDOOR DRIVE35 kgEXIT1IN CASE OF FIREDO NOT USETHE LIFT2EXIT2IN CASE OF FIREDO NOT USETHE LIFT2EXIT3IN CASE OF FIREDO NOT USETHE LIFT212350 kg50 kg50 kg50 kgTILES50 kgTILES50 kgTILESMAINLIFT CONTROL800 kg · 1.0 m/sRUNDOORSAFE1:455.5 kWTRIP 1.3 m/s
floor2car load0 kgcounterweight1,360 kgmotor holds360 kgmotor power0.0 kWcar speed0.00 m/sgovernorok
The big idea: the counterweight weighs as much as the car plus 45% of a full load, so the motor only holds the difference: 40 kg instead of 1,320. And if the ropes ever go, the governor trips and wedges clamp the rails, the trick Elisha Otis showed in 1854 at New York's Crystal Palace by having the only rope above his platform cut.
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Made by @elvar_official · drawn in code with Claude Code on the iso kit from wheresryan22/anatomy (MIT)