Introduction
Vertical Transportation: Elevators & Escalators
Dr. M. Zahurul Haq
Professor Department of Mechanical Engineering Bangladesh University of Engineering & Technology (BUET) Dhaka-1000, Bangladesh zahurul@me.buet.ac.bd http://teacher.buet.ac.bd/zahurul/
ME 415: Refrigeration & Building Mechanical Systems
c Dr. M. Zahurul Haq
(BUET)
Vertical Transportation
ME 415 (2011)
1 / 32
Introduction
Of the many decision that must be made by the designer of a multi-story building, probably none is more important than the selection of the vertical transportation equipment - that is the passenger, service, and freight elevators and the escalators. These items represent a major building expense; for a 25-story office building as much as 10% of the construction cost. The quality of elevator service is also an important factor in a tenant’s choice of space in competing buildings.
c Dr. M. Zahurul Haq
(BUET)
Vertical Transportation
ME 415 (2011)
2 / 32
Elevator Hardware
Electric Traction Passenger Lift
Electric Traction Passenger Lift
The car, cables, elevator machine, control equipment, counterweights, hoistway, rails, penthouse, and pit are the principle parts of a traction elevator installation. The car is a cage of some fire-resistant material supported on a structural frame, to the top member of which the lifting cables are fastened. By means of guide shoes on the side members, car is guided in its vertical travel in the shaft. The car is provided with safety doors, operating-control equipment, floor-level indicators, illumination, emergency exits, and ventilation.
(BUET) Vertical Transportation ME 415 (2011) 3 / 32
c Dr. M. Zahurul Haq
e927
Elevator Hardware
Electric Traction Passenger Lift
e943
c Dr. M. Zahurul Haq
(BUET)
Vertical Transportation
ME 415 (2011)
4 / 32
Elevator Hardware
Electric Traction Passenger Lift
Four to eight cables, depending on the car speed and capacity, are
Dr. M. Zahurul Haq
Professor Department of Mechanical Engineering Bangladesh University of Engineering & Technology (BUET) Dhaka-1000, Bangladesh zahurul@me.buet.ac.bd http://teacher.buet.ac.bd/zahurul/
ME 415: Refrigeration & Building Mechanical Systems
c Dr. M. Zahurul Haq
(BUET)
Vertical Transportation
ME 415 (2011)
1 / 32
Introduction
Of the many decision that must be made by the designer of a multi-story building, probably none is more important than the selection of the vertical transportation equipment - that is the passenger, service, and freight elevators and the escalators. These items represent a major building expense; for a 25-story office building as much as 10% of the construction cost. The quality of elevator service is also an important factor in a tenant’s choice of space in competing buildings.
c Dr. M. Zahurul Haq
(BUET)
Vertical Transportation
ME 415 (2011)
2 / 32
Elevator Hardware
Electric Traction Passenger Lift
Electric Traction Passenger Lift
The car, cables, elevator machine, control equipment, counterweights, hoistway, rails, penthouse, and pit are the principle parts of a traction elevator installation. The car is a cage of some fire-resistant material supported on a structural frame, to the top member of which the lifting cables are fastened. By means of guide shoes on the side members, car is guided in its vertical travel in the shaft. The car is provided with safety doors, operating-control equipment, floor-level indicators, illumination, emergency exits, and ventilation.
(BUET) Vertical Transportation ME 415 (2011) 3 / 32
c Dr. M. Zahurul Haq
e927
Elevator Hardware
Electric Traction Passenger Lift
e943
c Dr. M. Zahurul Haq
(BUET)
Vertical Transportation
ME 415 (2011)
4 / 32
Elevator Hardware
Electric Traction Passenger Lift
Four to eight cables, depending on the car speed and capacity, are