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US 10,093,515 B2Granted
Elevator apparatus
AssigneeMitsubishi Electric Corporation
InventorsNaohiro Shiraishi, Seiji Watanabe, Kotaro Fukui
Life of this patent
Estimating the term…
Abstract
In an elevator apparatus, a safety device that makes a car perform emergency stopping is mounted to the car. A rope is installed in a loop inside a hoistway. The rope is connected to the car. A tensioning sheave around which the rope is wound is disposed in a lower portion of the hoistway. A tensioning sheave displacement detecting portion detects downward displacement of the tensioning sheave that accompanies dropping of the car due to breakage of the suspending body and activates the safety device.
Claims6
An elevator apparatus comprising:
- a car that ascends and descends inside a hoistway;
- a suspending body that suspends the car;
- a hoisting machine that raises and lowers the car;
- a safety device that is mounted to the car, and that makes the car perform emergency stopping;
- a car buffer that alleviates mechanical shock from a collision of the car into a bottom portion of the hoistway;
- a rope that is installed in a loop inside the hoistway, and that is connected to the car;
- a tensioning sheave that is disposed in a lower portion of the hoistway, and around which the rope is wound;
- and
- a tensioning sheave displacement detecting portion that detects displacement of the tensioning sheave that accompanies dropping of the car due to a breakage of the suspending body, and that activates the safety device.
6 more elements
Dependencies are inferred from the claim text.