Posts in category: Elevator

Traction Elevators: 

In this Paragraph, we will discuss Traction Elevator. Traction elevators use ropes that pass over a wheel connected to an electric motor. When the electric motor starts, the wheel is set in motion. This pulls the string and lifts the elevator car to the required floor levels. 

Firstly, the wheel for this arrangement is usually placed in the machine room for the building on the highest floor. Secondly, a counterweight is added to make the elevators more efficient by offsetting the car’s weight and the occupants. Finally, this way, the wheel’s speed, and the rope coordination are achieved. 

There are two types of traction elevators as follows:

A. Geared Traction Elevator: 

In this type, the wheel is driven by having a gearbox attached to the motor. These elevators achieve a travel speed of up to 2.5m/s. 

B. Gearless Traction Elevator: 

The wheel is directly attached to the motor of this type. Traction Elevator offers a speed of up to 10m/s.

You can also check our all types of lift services.

According to the hoist mechanism, there are 4 main types of elevators as follows:

1. Hydraulic Elevators:

Hydraulic elevators employ a piston at the bottom of the elevator to push it to different levels. An electric motor forces oil or any hydraulic fluid to move the piston.

2. Traction Elevators:

Traction elevators are lifted using ropes that pass over a wheel connected to an electric motor. This pulls the rope and lifts the elevator car to the required floor levels.

Traction elevators are of two types:

A) Geared Traction Elevator, B) Gearless Traction Elevator.

3. Climbing elevator:

A climbing elevator is a self-ascending elevator with its own propulsion.

4. Pneumatic Elevators:

Vacuum elevators do not use any cables or pulley systems to operate. Instead, this elevator is a tube in a sealed vacuum arrangement operated by controlling air pressure.

Based on its function there are several types of elevators as follows:

1. Passenger Elevators

Based on its use there are many kinds of Passenger Elevators.

A) Double Deck Elevator, B) Bed elevators, C) Service elevators, D)Observation elevators, E) Residential elevators.

2. Freight Elevator

3. Dumbwaiters

4. Vehicle elevators

Final Thoughts:

Even though elevators can be an expensive investment, the convenience and ease of use is often an intriguing reason to add one to your next structure.

Elevator Control System is the system responsible for coordinating all aspects of elevator service such as travel, speed, accelerating, decelerating, door opening speed and delay, leveling and hall lantern signals.

It accepts inputs (e.g. button signals) and produces outputs (elevator cars moving, doors opening, etc.).

The main aims of the elevator control system are:

• To bring the lift car to the correct floor.
• To minimize travel time.
• To maximize passenger comfort by providing a smooth ride.
• To accelerate, decelerate and travel within safe speed limits.

Types of elevator control systems:

There are 3 main types of elevator control systems as follows:

1. Single Automatic operation:

• First automated system w/o single call button on each floor and a single button for each floor inside car.
• Called if no one is using it.
• Passenger has exclusive use of the car until rip is complete.

2. Selective collective operation:

• Most common, remembers and answers calls in one direction then reverses. When trip complete, programmed to return to a home landing.

3. Group automatic operation:

• For large buildings with many elevators which are controlled with programmable microprocessors to respond.