Communication system for mine underground double electric locomotives to tow mine car from front and back

The utility model discloses a communication system for mine underground double electric locomotives to tow a mine car from front and back. The communication system comprises a first transceiver, a second transceiver, a first controller, a second controller and at least one vehicle-mounted repeater, wherein the first transceiver and the second transceiver communicate, so that the first controller and the second controller form a control system with a communication relationship, so that the synchronous operation of the two electric locomotives can be controlled. At least one vehicle-mounted repeater is arranged between the car head and the car tail of the mine car and spaced by a determined distance with each other, and used for transmitting a signal sent by the first transceiver and a signal sent by a second transceiver to ensure that the front electric locomotive and the rear electric locomotive can keep the communication from beginning to end, so that the front and the rear electric locomotives use a communi