Railway wagon main valve assembly line

The invention discloses a railway wagon main valve assembly line which comprises a main frame body, a speed chain assembly line is arranged on the main frame body, a first station, a second station and a third station are sequentially arranged on the main frame body in the conveying direction of the speed chain assembly line, and a valve body tray is arranged on the speed chain assembly line. A valve body to be assembled is placed on the valve body tray; the third station is arranged at the tail end of the conveying direction of the speed chain assembly line, a three-axis grabbing device and a turnover machine are arranged at the third station, and the three-axis grabbing device is used for grabbing the valve bodies located on the valve body trays to the turnover machine. According to the assembly line for the main valve of the railway wagon, the risk that parts on the valve body are mistakenly assembled and neglected to be assembled is reduced, the labor intensity of assembling personnel is reduced, and the