Main plug-in connector for integrated train overspeed protection equipment

The invention discloses a main plug-in connector for integrated train overspeed protection equipment and belongs to the field of train overspeed protection. The main plug-in connector for the integrated train overspeed protection equipment comprises a rail circuit coding function module, a speed and distance measurement function module, and a train overspeed protection processing module; only one provided main plug-in connector for the integrated train overspeed protection equipment can realize the rail circuit coding function, the speed and distance measurement function and the train overspeed protection function which are realized by a plurality of pieces of separate equipment or a plurality of plug-in connectors originally, so that the installation space and cost of the train overspeed protection equipment is effectively saved, the anti-electromagnetic interference capacity is improved effectively, and a train running control system can be developed in the direction of integration, miniaturization and high