Towed non-returnable sweeping machine

The utility model discloses a towed non-returnable sweeping machine, which comprises a trailer dragged by a small-sized tractor. A sweeping brush roll with axial ends inclined from front to rear in the horizontal direction is transversely mounted between front wheels and rear wheels of the trailer. A gearbox and a generator are respectively mounted on a frame and at the rear of the trailer. A hydraulic power unit is mounted on the frame and on one side of the gearbox. A drive pulley is mounted on a gear case on a rear axle of the trailer. A drive belt is connected between the drive pulley and a pulley of the gearbox. A universal drive shaft is connected forward to the gear case. An auxiliary gear case is connected to the front end of the universal drive shaft and mounted in the middle of a brush roll lifting rack. Two sprockets in mutual transmission are mounted on the auxiliary gear case and a brush roll shaft at one end of the lifting rack. The towed non-returnable sweeping machine is towed by the small-siz