| 摘要 |
PURPOSE:To aim at simplification in a hydraulic pipe line, by inserting a feed oil pipe rotatably in a relative manner along an axial center part, and interconnecting this feed oil pipe to a hydraulic clutch by way of an oil passage in a shaft, in case of a device which installs plural shafts concentrically and also installs the hydraulic clutch on these shafts. CONSTITUTION:A shaft, for example, a first main shift shaft S1 of a hydraulic gear shifter is supported on a bearing in a transmission case, and a clutch shaft 20 of a main clutch 17 is installed on the same shaft at the one end side of this shaft S1. The main clutch 17 is provided with a sprocket 18, where engine power is transmitted, at the driving side. Each of hydraulic gear shifting clutches 40 and 41 of 2-speed and 3-speed is installed in both main shift shafts S1 and S2. In this case, a hole 60 to be interconnected to a hole 59 in an axial direction installed in an axial center part of the clutch 20 is formed at the front end side of the shaft S1, and internal-external two pieces of feed oil pipes 61 and 62 different in diameter are concentrically inserted into both these holes 59 and 60. And, these feed oil pipes 61 and 62 are interconnected to respective hydraulic clutches 40 and 41 via oil passage 51 and 65, etc., inside the shaft S1.
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