| 摘要 |
PURPOSE:To eliminate destruction of the mouth tapered part of a rotating axis of a steel pipe by forming a lower part of the steel pipe rotary shaft to slightly tapered shape. CONSTITUTION:Lubricating oil 8, accumulated in the lower part of an enclosed vessel 1, is sucked by an oil feed piece 10 in the lower part of a rotating axis 9 and fed to a main axial part 9a and eccentric part 9b. A lower end part of the rotating axis 9 is formed to slightly tapered shape. On the other hand, the oil feed piece 10 is totally formed to cylindrical shape, in which its one end is tapered to form a feed oil pump 10a and the other end, that is, a press fit part 10b to the rotating axis 9 is formed to mouth spread shape. Further, a slit 10c is provided to the press fit part 10b, and this relieves stress at press fitting to improve press fitting workability. In this way, a sharp taper is eliminated, and destruction can be prevented in the mouth tapered part of the rotating axis. |
