| 摘要 |
PURPOSE:To smoothly perform the supply of lubricating oil to the bearing of an input shaft and the bearing of a counter gear by providing an oil pump in the front bearing retainer of a gear transmission and providing an exhaust pressure control valve opening when the exhaust port of the pump becomes a predetermined set value. CONSTITUTION:When an input shaft 11 is rotated by a engine, a counter gear 13 rotates through teeth 11, and an oil pump 21 provided in a front bearing retainer 15 at the left end of a mission case 12 through a drive shaft 20 is driven. Then, lubricating oil at the lower part of the mission case 12 flows through a filter 24, a through hole 23a and a pump 23, and is sucked up into the pump 21 from a suction port 21a, and exhausted to a space R through an exhaust pressure control valve 22 from the exhaust port 21. After lubricating bearing B3 and B1, the lubricating oil flows down towards the lower part of the mission case 12, on one hand, and flows through oil holes 11d and 11e and a pipe 26. After lubricating the bearing B2, the lubricating oil flows down towards the lower part of the case 12. |
