| 摘要 |
PURPOSE: A monitoring antenna protection device is provided to extend the lifespan of a monitoring antenna by preventing the damage of the monitoring antenna by closing a door when a platform is inserted into the inside of the door. CONSTITUTION: A door frame(10) is fixed by a hinge pin(21) which is formed in the lower part of a door(20). One side of a door cylinder(30) in the internal both sides of the door frame is combined to a hinge bracket(31). A door rod(301) of the door cylinder is combined to a knuckle joint(22) which is fixed to the door. A first guide block(43) fixed to the lower part of a carriage(42) is combined to a first guide rail(41) fixed to the inner side of the lower part of the door frame. A carriage cylinder(44) is installed in the lower part of the carriage. A platform(50) is combined to be transferred in the upper part of the carriage.
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