Support Roller components:
- Since the train door is locked from the top, a support roller is used to ensure the door is securely closed at the bottom.
- These rollers, located on both sides of the train door, keep the doors closed by applying downward force.
Lower left and right door pulleys (Roller Swing Arm):
- The bottom of the door panels is connected to the body via a swinging roller arm.
- A guide rail at the bottom of the train determines the distance of the door from the body during opening/closing through this arm.
