(B, ) the utility model relates to a track transportation vehicles locomotive control box for closing mechanism which comprises mounting panel, connector socket, terminal row, programming logic controller, air bleeding valve, power, relief pressure valve, admission valve, buzzer, relay group and box body frame, its characterized in that are that the mounting panel of control box is a gas circuit board, and all pneumatic elements pass through the gas circuit path connection of gas circuit board, and electrical components installs the position that does not have the gas pocket at the gas circuit board. Through control entire system's gas circuit return circuit and circuit, can make closing mechanism realize the automatic operation function to can be through the switching and locking action of manually operation at vehicle any one side execution hatch door under the condition of the automatic disabler of closing mechanism. (B, )