The invention relates to the technical field of
agricultural machinery and provides a stubble collecting and returning
machine. The
machine comprises a gear box, a tripod, a stander, a stubble collecting
device knife pivot, a stubble collecting
device knife bed, a stubble collecting knife, a stubble chopping knife, a returning
device knife pivot, a returning knife
bed, a returning knife, a fixed knife, a case and a
copying sliding plate, wherein the gear box is mounted on the stander; the tripod is mounted on the stander by a suspension loop; the stubble collecting device knife pivot is horizontally mounted on the stander; the stubble collecting device knife
bed is welded on the stubble collecting device knife pivot according to
helix arrangement for mounting the stubble collecting knife and the stubble chopping knife; the returning device knife pivot is horizontally mounted on the stander; the returning knife bed is welded on the returning device knife pivot according to
helix arrangement for mounting the returning knife; the case is mounted outside the returning device; the fixed knife is welded at the inner side of the front of the case; and the
copying sliding plate is mounted on the case. When the
machine works, the stubble collecting device collects the stubbles and throws the stubbles together with the straws into the returning device and the returning device crushes and returns the stubbles and the straws, thus realizing that the machine and the tools enter into the field once and carry out
straw stubble collecting and returning operations simultaneously.