| 摘要 |
PROBLEM TO BE SOLVED: To achieve reduction of cost and improvement of operability and maintenance efficiency of a turning control mechanism provided in a traveling transmission case. SOLUTION: In the traveling transmission case 5, a swash plate 1a capable of varying a pressure oil delivery amount is provided, a pair of variable hydraulic apparatuses 1 having the same specification commonly used as a pump and a motor are multi-connected by an exclusive hydraulic circuit part 2, and the pair of the turning variable hydraulic apparatuses 1 and a traveling hydraulic type continuously variable transmission 4 are arranged on suitable positions of a gear interlocking mechanism having a steering clutch 3. The continuously variable transmission 4 is arranged on an outer wall 5a on one side of the case 5, and the variable hydraulic apparatus 1 is arranged on an outer wall 5b on the other side. A charge pump 4a for supplying oil of the continuously variable transmission 4 is commonly used for supplying oil for the variable hydraulic apparatus 1. The transmission capacity of the variable hydraulic apparatus 1 is smaller than the transmission capacity of the continuously variable transmission 4. COPYRIGHT: (C)2004,JPO&NCIPI
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