Search results
Results From The WOW.Com Content Network
Hydraulic elevators are cheaper, but installing cylinders greater than a certain length becomes impractical for very-high lift hoistways. For buildings of much over seven floors, traction elevators must be employed instead. Hydraulic elevators are usually slower than traction elevators. Elevators are a candidate for mass customization.
The Kone EcoSpace elevator is a machine-room-less traction elevator designed for low-rise buildings from 2 to 4 stories as an energy-efficient alternative to hydraulic elevators, and can fit in an existing hydraulic elevator hoistway. Maximum speed is 150 feet per minute (0.76 m/s). [16]
Elevator In traction (non-hydraulic) elevators, a heavy counterweight counterbalances the load of the elevator carriage, so the motor lifts much less of the carriage's weight (specifically, the counterweight is the weight of the carriage plus 40-50% of its rated capacity). The counterweight also increases the ascending acceleration force and ...
Traction motors are used in electrically powered railway vehicles (electric multiple units) and other electric vehicles including electric milk floats, trolleybuses, elevators, roller coasters, and conveyor systems, as well as vehicles with electrical transmission systems (diesel–electric locomotives, electric hybrid vehicles), and battery ...
Elevating scraper: self-loading as it uses an elevator to load material; requires no push-cat. Tandem scrapers: separate tractor and scraper engines provide greater power, and better traction in steep or slippery areas; Tandem Push-Pull: concentrates the combined horsepower of two such machines onto one cutting edge.
Ariana Grande, the pop music and "Wicked" star, is speaking out about comments surrounding her body, calling the comments "horrible."
Unanswered questions remain about a fatal shooting at a Madison, Wisconsin, private school as new details emerge about the shooter’s family life and possible ties to a California man who ...
A puzzling flurry of apparent drone sightings along the US east coast is "nothing nefarious", says President Joe Biden. The sightings in recent weeks have occurred in New Jersey and a number of ...