Which mechanism is used in entrances with more than one door panel?

In entrances with more than one door panel, the use of relating devices is essential. These mechanisms are designed to ensure that the various panels operate in a coordinated manner. For example, if one door panel opens, relating devices ensure that the other panel(s) remain in a closed position until it is safe for them to open as well. This is critical for maintaining proper operation and safety in elevator entrances, as it prevents situations where multiple panels could open simultaneously, which could lead to safety hazards for passengers.

Relating devices can include mechanical linkages or electronic controls that communicate the status of each panel to ensure synchronized movement. This ensures that door panels move as intended, enhancing overall functionality and user safety.

While locking mechanisms, guiding mechanisms, and safety devices are important components of elevator systems, they serve different purposes and do not specifically address the coordination necessary for multiple door panels to operate safely and effectively together.