Elevators & escalators

April 19th, 2011

Elevators

• Types:1. Pneumatic Vacuum Elevators (PVE)2. Traction elevators3. Hydraulic elevators4. Climbing elevator

• Usage:– Carry people – Fright goods and tools– Left vehicles and aircrafts

Pneumatic Vacuum Elevators (PVE)

• Maximum height = 11 m• Maximum weight = 240 kg• 2 – 3 people• Residential use only.

Traction elevators

• Advantages:1. Fast2. Quiet3. Smooth ride4. High rise application

• Disadvantages:1. machine room required2. Higher cost3. Support structure

Hydraulic elevators• Advantages:

1. High loads2. No machine room3. Dimension optimized4. Low cost

• Disadvantages:1. Slow and noisy2. Hot oil odor3. Poor riding quality4. Environmentally

unsafe

Escalators