TRAVELLING TRANSMISSION STRUCTURE OF WORKING VEHICLE

摘要

PROBLEM TO BE SOLVED: To avoid the generation of trouble in operation due to intrusion of air into a hydraulic continuously variable transmission in the case of providing a transmission system separate from the hydraulic continuously variable transmission for travelling. SOLUTION: The travelling transmission structure is provided with parallel transmission systems 34 and 35 capable of mechanically transmitting power which is transmitted to an input shaft 10 of the static-hydraulic continuously variable transmission 7 to a lower side of an output shaft 11 of the static-hydraulic continuously variable transmission separately from a hydraulic transmission system of the static-hydraulic continuously variable transmission 7. Transmission ratio of the parallel transmission systems 34 and 35 is set same as the transmission ratio of the static-hydraulic continuously variable transmission 7 at the highest speed position, and a friction type clutch mechanism 38 capable of transmitting and shutting the power is provided in the parallel transmission systems 34 and 35. COPYRIGHT: (C)2006,JPO&NCIPI