REAPING POWER EXTRACTION DEVICE FOR TRAVEL TRANSMISSION UNIT

摘要

PROBLEM TO BE SOLVED: To provide a reaping power extraction device for a travel transmission unit solving the problem that any conventional travel transmission unit having a planet gear transmission system and a stepless variable-speed belt transmission system has afforded neither reaping speed (efficiency) nor conveying speed (efficiency) variable interlockingly with the traveling speed of a combine harvester. SOLUTION: This reaping power extraction device for a travel transmission unit is such that the travel transmission unit includes a stepless variable-speed belt transmission unit 4 and a planet gear transmission unit 5 so as to transmit stepless variable-speed rotary power for normal/forward F and reverse/retreat R each from neutral N to a traveling output shaft 6, thus variable-speed rotary power via the planet gear transmission unit 5 can be transmitted to a reaping pretreatment unit 7.