Canopy of a passenger boarding bridge

A canopy for a passenger boarding bridge, comprising:

• a fixed frame,
• a flexible frame configured to align to a fuselage of a plane or a ship,
• a bellow roof clamped between the fixed frame and the flexible frame, and
• a suspension system, comprising:
• a first cylinder actuator, and
• a second cylinder actuator,
• wherein the first cylinder actuator is configured to provide a pushing force in a first pushing direction and the second cylinder actuator is configured to provide a pushing force in a second pushing direction,
• wherein the first cylinder actuator and the second cylinder actuator are connected in series and the first pushing direction is opposite to the second pushing direction,
• wherein the first cylinder actuator is disposed between the fixed frame and the second cylinder actuator, and the second cylinder actuator is disposed between the first cylinder actuator and the flexible frame.