The reason why the stationary boarding bridge does not have a descent button

The reason why the stationary boarding bridge does not have a descent button

The reason why the stationary boarding bridge does not have a descent button, first of all because it consists of two oil cylinders, the large oil cylinder pushes the table, and the small oil cylinder pushes the tongue plate. When the tongue plate is not on the table, the forklift will pass the boarding bridge and cause the oil cylinder If the damage is already on the table and continues to fall, it will also cause damage to the cylinder or the deck of the bridge.

10

8