Linkage footboard structure for fire-fighting vehicle

The invention relates to a linkage footboard structure for a fire-fighting vehicle belonging to a fire-fighting device. The fire-fighting vehicle comprises a vehicle body, wherein the vehicle body comprises wheels and a carriage, and each wheel is provided with a door-shaped mud baffle. The invention is characterized in that the linkage footboard structure comprises a door-shaped reversing frame, a first stop pin, a second stop pin, a first spring cylinder, a second spring cylinder, a footboard, a first draw rod, a second draw rod, a first support plate, a second support plate and a third spring cylinder, wherein the door-shaped reversing frame is composed of a cross arm, a first longitudinal arm and a second longitudinal arm, one end of the cross arm is connected with one end of the first longitudinal arm, the other end of the cross arm is connected with one end of the second longitudinal arm, and the other ends of the first and the second longitudinal arms are arranged on the carriage; the first stop pin and the second stop pin are fixed with the carriage; the first spring cylinder and the second spring cylinder are connected with the carriage; and one end of a footboard is connected with the first longitudinal arm, and the other end of the footboard is connected with the second longitudinal arm. The first and the second longitudinal arms of the reversing frame can be spread out or pushed in to form a first space by simply operating the reversing frame once, so that the footboard can be spread out or pushed in to form a second space. The invention has the advantages of simple structure, convenient installation and smooth operating process.