PURPOSE: To prevent the staggering of linking part by forming the lower part of the connection port between an auger part and a transfer apparatus in the form of a circular arc and forming the bottom part of the outer cylinder of the transfer apparatus in a circular wall.

CONSTITUTION: A connection port between an auger part 8 and a transfer apparatus 10 is formed on the rear frame 13 of the auger part 8 and the lower side of the port is made to be a circular arc form. An outer cylinder of the transfer apparatus 10 has a square form except for the bottom part which has a circular arc form. When the machine body is inclined, the reaping part 4 is rolled to cause the staggering of the connection port between the auger part and the transfer apparatus, however, there is no staggering of the linking part.