Lift Flashcards
Lift
History
A form of vertical transport between buildings floors level or deck
236 bc ancient Egyptians rope driven hoist powered by humans animals and water
Components of lift
Electric motor and drive unit
Cabin
Elevator shaft
Safety device
Doors
Buffers
Speed governors
Electric motor and drive unit
Responsible for shifting the electric power into mechanical power runs by ac and dc motor
Designed to drive traction cable counterweighting host system to offer silky smooth ride
Cabin
Central components of lift space where goods and passenger occupy when in transit
Safety device
Mechanism attached to elevator provides protection for passengers and goods
If the speed limit is surpassed its maximum device helps in maintaining a safe and secure ride
Doors
2 different variations
Manual
Automatic
Buffers
Bottom of every elevator shaft
To protect passangers providing emergency stop that can halt the descending car through accumulating or dissipating the kinetic energy of the lift
Elevator rails
Up and down movement possible by rails
Aka guide rails allows safe and stable movement and its counter when in motion
Speed governors
Regulating system that controls the velocity of a cabin
When surpased limits the governors will kick in and reduce speed velocity
Types of lift
Hydraulic
Pneumatic
Traction
Capsule
Building
Passengers
Freight
Residential
Hydraulic
Power driven by a piston moves within a cylinder
Done by pumping a hydraulic oil to the cylinder
Oil can be controlled by an electric valve
Pneumatic lift
With external cylinder
Crystal clear self supporting cylinder
Modular section to fit effortlessly into 1 by 1
Traction lift cable driven
Most popular
Steel cables+hoisting ropes runs above pulley connected to a motor
Geared and gear less traction
Capsule lift
Prestigious building decorative
Building lift
Vertical transport
Public building complex offices multi-storey building
