Traditional Culture Encyclopedia - Hotel accommodation - Why is the car leveling device installed opposite the door knife?

Why is the car leveling device installed opposite the door knife?

The door link first moves the door knife,

The spacing between the fixed platens decreases.

The unlocking roller swings anticlockwise, the locking hook is separated from the locking device, and the door knife drives the hall door and the car through the roller.

The doors open at the same time.

At the same time, the contact switch is turned off, and the trolley operation control circuit is turned off.