An escalator is a mechanical transportation device designed to move people safely and smoothly between different levels of a building. It consists of a continuous loop of metal steps connected and moving on inclined tracks, allowing upward or downward travel.

Main Components of an Escalator:

1.⁠ ⁠Steps:
Move along tracks while maintaining a horizontal position for passenger comfort and safety.

2.⁠ ⁠Handrail:
A rubber belt that moves in sync with the steps, providing stability for users.

3.⁠ ⁠Truss:
The structural steel frame that connects the upper and lower landings and supports all internal components.

4.⁠ ⁠Drive Unit:
Powers the entire system, typically including a gearbox, motor, and brake for safety.

5.⁠ ⁠Comb Plates:
Located at the entrance and exit, preventing small objects from falling into the mechanism.

Safety Features:

1. Emergency stop buttons
2. Anti-slip sensors
3. Auto-locking mechanisms when stopped
4. Fire-resistant and anti-slip finishes