Elevators
Electrical Load Classification According To Load Function
| | | | | |
1. Lighting Load : | |
a) Indoor Lighting . | |
b) Outdoor Lighting . | |
2. Power Loads (Sockets) . | | |
3. Appliances Load : | |
a) HVAC loads (Heating, Ventilation and Air Conditioning | | | | | |
System Loads). | |
b) Pumps Loads (Fire Fighting, Plumping, Irrigation Systems, | | | | | |
Etc.). |
C) Lifts (Elevators) Loads (Transportation System Loads).
| | | | | |
Elevators Types and Classification | | |
Introduction
An elevator (or lift in the Commonwealth excluding Canada) is a type of
| | | | | | | | | | | |
vertical transport equipment that efficiently moves people or goods between
| | | | | | | | | |
floors (levels, decks) of a building, vessel or other structures. Elevators are
| | | | | | | | | | | |
generally powered by electric motors that either drive traction cables or
| | | | | | | | | | |
counterweight systems like a hoist, or pump hydraulic fluid to raise a
| | | | | | | | | | | |
cylindrical piston like a jack.
| | | | |
There are three types of convoying methods in buildings, Elevators ,
| | | | | | | | | |
Escalators , Ramps, and they have different dimensions and uses according to
| | | | | | | | | | | |
building type ,number of users in it.
| | | | | | |
Elevator Types |
1. According to hoist mechanism. | | |
2. According to building height. | | |
3. According to building type. | | |
4. According to elevator Location. | | |
1
,1- According to hoist mechanism:
| | | |
Elevators will be classified according to hoist mechanism to 2 main types as
| | | | | | | | | | | |
follows:
|
1. Hydraulic Elevators |
2. Traction Elevators |
1- Hydraulic Elevators (Push Elevators)
| | | |
Hydraulic Elevators |
Hydraulic elevators are supported by a piston at the bottom of the elevator that
| | | | | | | | | | | | |
pushes the elevator up. They are used for low-rise applications of 2-8 stories
| | | | | | | | | | | | |
and travel at a maximum speed of 200 feet per minute. The machine room for
| | | | | | | | | | | | | | |
hydraulic elevators is located at the lowest level adjacent to the elevator shaft.
| | | | | | | | | | | | |
Hydraulic elevators have many two main types as follows:
| | | | | | | | |
2
,A- Conventional Hydraulic Elevators
| | |
Conventional Hydraulic Elevators | |
They have a sheave that extends below the floor of the elevator pit, which
| | | | | | | | | | | | |
accepts the retracting piston as the elevator descends. Some configurations
| | | | | | | | | |
have a telescoping piston that collapses and requires a shallower hole below
| | | | | | | | | | | |
the pit. Max travel distance is approximately 60 feet.
| | | | | | | | |
3
, B- Telescopic Hydraulic Elevators:
| | |
Telescopic Hydraulic Elevators
| |
In this configuration, the telescoping pistons are fixed at the base of the pit
| | | | | | | | | | | | |
and do not require a sheave or hole below the pit and has 2 or 3 pieces of
| | | | | | | | | | | | | | | | | |
telescoping pistons. Telescoping pistons allow up to 50 feet of travel
| | | | | | | | | | |
distance.
|
4
Electrical Load Classification According To Load Function
| | | | | |
1. Lighting Load : | |
a) Indoor Lighting . | |
b) Outdoor Lighting . | |
2. Power Loads (Sockets) . | | |
3. Appliances Load : | |
a) HVAC loads (Heating, Ventilation and Air Conditioning | | | | | |
System Loads). | |
b) Pumps Loads (Fire Fighting, Plumping, Irrigation Systems, | | | | | |
Etc.). |
C) Lifts (Elevators) Loads (Transportation System Loads).
| | | | | |
Elevators Types and Classification | | |
Introduction
An elevator (or lift in the Commonwealth excluding Canada) is a type of
| | | | | | | | | | | |
vertical transport equipment that efficiently moves people or goods between
| | | | | | | | | |
floors (levels, decks) of a building, vessel or other structures. Elevators are
| | | | | | | | | | | |
generally powered by electric motors that either drive traction cables or
| | | | | | | | | | |
counterweight systems like a hoist, or pump hydraulic fluid to raise a
| | | | | | | | | | | |
cylindrical piston like a jack.
| | | | |
There are three types of convoying methods in buildings, Elevators ,
| | | | | | | | | |
Escalators , Ramps, and they have different dimensions and uses according to
| | | | | | | | | | | |
building type ,number of users in it.
| | | | | | |
Elevator Types |
1. According to hoist mechanism. | | |
2. According to building height. | | |
3. According to building type. | | |
4. According to elevator Location. | | |
1
,1- According to hoist mechanism:
| | | |
Elevators will be classified according to hoist mechanism to 2 main types as
| | | | | | | | | | | |
follows:
|
1. Hydraulic Elevators |
2. Traction Elevators |
1- Hydraulic Elevators (Push Elevators)
| | | |
Hydraulic Elevators |
Hydraulic elevators are supported by a piston at the bottom of the elevator that
| | | | | | | | | | | | |
pushes the elevator up. They are used for low-rise applications of 2-8 stories
| | | | | | | | | | | | |
and travel at a maximum speed of 200 feet per minute. The machine room for
| | | | | | | | | | | | | | |
hydraulic elevators is located at the lowest level adjacent to the elevator shaft.
| | | | | | | | | | | | |
Hydraulic elevators have many two main types as follows:
| | | | | | | | |
2
,A- Conventional Hydraulic Elevators
| | |
Conventional Hydraulic Elevators | |
They have a sheave that extends below the floor of the elevator pit, which
| | | | | | | | | | | | |
accepts the retracting piston as the elevator descends. Some configurations
| | | | | | | | | |
have a telescoping piston that collapses and requires a shallower hole below
| | | | | | | | | | | |
the pit. Max travel distance is approximately 60 feet.
| | | | | | | | |
3
, B- Telescopic Hydraulic Elevators:
| | |
Telescopic Hydraulic Elevators
| |
In this configuration, the telescoping pistons are fixed at the base of the pit
| | | | | | | | | | | | |
and do not require a sheave or hole below the pit and has 2 or 3 pieces of
| | | | | | | | | | | | | | | | | |
telescoping pistons. Telescoping pistons allow up to 50 feet of travel
| | | | | | | | | | |
distance.
|
4
