| 摘要 |
PURPOSE:To constitute the whole apparatus into compact form by forming an intermediate chamber between a speed change chamber and a sub-change chamber and installing a PTO clutch and a planetary reduction gear mechanism into the intermediate chamber, thus cleverly utilizing the small space. CONSTITUTION:As for the speed change gear of a tractor which is equipped with a main change chamber 1, speed change chamber 2. sub-change chamber 4, and a differential gear chamber 5, an intermediate chamber 7 is formed between the speed change chamber 2 and the sub-change chamber 4. A rotary shaft installed from the main change chamber 1 to the sub-change chamber 4 is intercepted by the intermediate chamber 7, and a rotary shaft 8 is installed onto the front side and a rotary shaft 17 is installed onto the rear side so that the concentricity is generated, and a planetary reduction gear mechanism 11 is interposed between the opposed edges of the both rotary shafts 7 and 8. Further, a PTO shaft 9 is installed in parallel to the rotary shaft 8, and a PTO clutch 10 is accommodated into the above-described intermediate chamber 7. |
