Design of a mobile telescopic chain elevator

Τίτλος

Design of a mobile telescopic chain elevator

Θέμα

Elevators--Design and construction

Δημιουργός

Solomou, Nicolas

Πηγή

Higher Technical Institute

Το πλήρες κείμενο είναι διαθέσιμο από το Υπουργείο Ενέργειας, Εμπορίου Βιομηχανίας και Τουρισμού.

Εκδότης

Library of Cyprus University of Technology

Ημερομηνία

2006

Συνεισφέρων

Papanastasiou, Nicos

Δικαιώματα

Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.

Μορφή

pdf

Γλώσσα

en

Τύπος

text

Αναγνωριστικό

MED0539

Σύνοψη

Elevators began as simple robe or chain hoists . An elevator is essentially a platform that is
either pulled or pushed up by a mechanical means. A modern day elevator consists of a cab
(also called a "cage" or "car") mounted on a platform within an enclosed space called a
shaft or more correctly a "hoistway". In the past elevator drive mechanisms were powered
by steam and water hydraulic pistons.
Hydraulic elevators use the principal of hydraulics to pressurize an above ground or inground piston to raise and lower the car. Roped Hydraulics use a combination of both ropes and hydraulic power to raise and lower cars. Recent innovations include permanent earth magnet motors, machine room-less rail mounted gearless machines, and microprocessor controls.
Hydraulic type
Conventional Hydraulic elevators are quite common for low and medium rise buildings (2- 5 stories). They use a hydraulically powered plunger to push the elevator upwards. On some, the hydraulic piston (plunger) consists oftelescoping concentric tubes, allowing a shallow tube to contain the mechanism below the lowest floor. On others, the piston requires a deeper hole below the bottom landing, usually with a PVC casing (also known as a caisson) for protection.
Roped hydraulic elevators use a combination of ropes and hydraulics.
Twin post hydraulic
Holeless hydraulic elevators do not require holes to be dug for the hydraulic cylinder. In one design manufactured by Otis, the cab is lifted by a pair of hydraulic jacks, one on each
side of the elevator.