In the threshing selective section of the combine the wind selection device

摘要

PURPOSE: To provide the subject winnowing device capable of preventing the overheating of an engine and improving the performance for grading threshed materials from discharged a threshing chamber by mounting an auxiliary fan for blasting air between the starting end side of the vibration grading member and a winnowing fan case toward the final end side. ;CONSTITUTION: In this winnowing device, a vibration-grading member 2 is spanned below a threshing chamber 1, and a winnowing fan 3 is disposed below the starting end side of the vibration-grading member 2 to grade the threshed materials discharged from the threshing chamber 1. An auxiliary fan 5 for blasting air between the starting end side of a vibration-winnowing member 2 and a winnowing fan case 4 toward the final end is mounted, and an air-exhausting port 8 having an opening and closing valve 7 is formed at a proper place outside the threshing and grading member A of the auxiliary fan case 6. The valve 7 is interlocked and connected to a threshing clutch for connecting or disconnecting a power to the closing valve 7. An air duct is preferably disposed in an engine room 10, and a part of exhausted hot air in the engine room 10 is preferably forcibly supplied to the auxiliary fan case 6 with a radiator fan through the air duct.;COPYRIGHT: (C)1996,JPO