This invention discloses an automatic detection device and method for longitudinal axial flow grain loss, comprising a material
conveyor belt, a separating axial flow mechanism, a seed receiving tray, a double-layer vibrating screen, a cleaning fan, a grain
conveyor belt, a weighing device, a
sieve box, an axial flow stepless
speed regulator, a power and transmission unit, a work area, a driver's cab, and an
operating system. The material
conveyor belt is located at the front end of the device and is connected to the interior of the separating axial flow mechanism. Below the separating axial flow mechanism, from front to back, are arranged the seed receiving tray, the double-layer vibrating screen, and the
sieve box. The cleaning fan is located below the seed receiving tray, the grain conveyor belt is located behind the cleaning fan, the weighing device is located below the grain conveyor belt, and the axial flow stepless
speed regulator is located at the rear end of the separating axial flow mechanism and is connected to the separating axial flow mechanism via a spline. This automatic detection device and method for longitudinal axial flow grain loss employs an intelligent driving and
operating system to achieve accurate and efficient detection of grain loss across multiple crops and working conditions, with full
mechanization and
automation.