Emergency reverse gear system and method for heavy tractor

The invention relates to the field of tractor reverse gear, in particular to a heavy tractor emergency reverse gear system and method, which comprises a vehicle speed sensor, a gear sensor, an emergency starting switch, a controller, a starting motor, a temperature sensor and a horn, the starting motor is connected with the controller through the forward rotation wire harness and the reverse rotation wire harness, the temperature sensor is installed on the starting motor and connected with the controller through the temperature sensor wire harness, and the loudspeaker is connected with the controller through the loudspeaker wire harness. The problems that mechanical connection between an engine and a gearbox cannot be disconnected manually after a heavy tractor flames out, a clutch cannot be cut off, the clutch is not cut off, a neutral gear cannot be engaged, the engine cannot be started, the engine is stuck in a field and cannot move, the heavy tractor needs to wait for a rescue vehicle to drag frequently,