elevator & its working principle
TRANSCRIPT
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The Elevator &
Its Working PrincipleInstructor: Rethwan FaizGroup member:1. Rahman, Ahmed Rezaur – 14-25536-12. Atik, Md Ataul Karim – 14-25862-13. ALI, Md. Niyamot - 14-26531-24. Hasan, Md. Mehedi - 14-26521-25. Hossain, Md. Saroar - 14-27032-2
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Topic to be discussed:Types of elevatorElevator working principle Switching of elevatorLatest & upcoming features of
elevatorSafety
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Types of Elevator:According to: Hoist Mechanism Building Height Building Types Elevator Location Special Uses
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According to hoist mechanism elevators is classified to 4 main types as follows:-
1.Hydraulic Elevetor 2.Traction/pulley Elevetor3.Climbing Elevetor4.Pneumatic Elevetor
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According to building heightA- Low-Rise buildings (1- 3 stories):-Buildings up to about (1 to 3) stories typically use hydraulic elevators because of their lower initial cost
B- Mid-Rise buildings (4 -11 stories):-Buildings up to about (4 to 11) stories typically use Geared Traction Elevators
C- High-Rise buildings (12 + stories):-Buildings up to about 12+ stories typically use Gear-Less Traction Elevators
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3. According to building types
Elevators will be classified according to building type to 5 main types as follows: 1.Hospital elevetors.2. Residencial /domestic elevetors.3.Industrial elevetors.4.Commercial elevetors.5.Parking buildings elevators.
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According to elevator location:-Outdoor Elevator (Inclined elevetor)
Platform elevator
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Accoring to special uses:- It is of two types-• Handicapped elevator
Grain elevator
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How it works:
Electric motor
lift car
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Counter weight
Sheave
Steel cables
Nudge
Governor
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switching of elevator:
The block diagram of switching control
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Component used in the circuit:• 7485 comparator• 74190 decade counter• 7447 decoder• A 7 segment display
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Circuit diagram:
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Elevator Safety Rules• Watch Your Step Entering & Exiting – Look D0WN• Leave Closing Doors Alone
• Never Enter an Elevator with A Suspicious Looking Person Inside
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Elevator Safety Reminder• Elevators are mechanical devices – The majority of
the elevator-related injuries and fatalities have occurred when passengers attempt to override the mechanical and safety devices of the elevator.
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Thank you