EXTENSIBLE GRAIN-DISCHARGING DEVICE OF COMBINE

摘要

PROBLEM TO BE SOLVED: To solve the problems of conventional grain-discharging device comprising the failure in the smooth extension of a mobile transfer pipe inserted into the outer circumference between a joint metal and a fixed transfer pipe for the transfer and discharge of grains and the leakage of grains through the gap between the pipes. SOLUTION: The extensible grain-discharging device of a combine is provided with a fixed transfer pipe 8 for transferring and discharging grains and an extensible mobile transfer pipe 13 fit on the outer circumference of a joint metal 30. The fitting part of the joint metal 30 has a mobile roller 27a contacting its outer circumference with the mobile transfer pipe 13. The joint metal 30 has a seal 27b, and the the part of the seal 27b below the horizontal plane at a prescribed angle (α1) has a double-superposed structure or a large outer diameter (D1). COPYRIGHT: (C)2004,JPO&NCIPI