| 主权项 |
1. A rotation rod assembly comprising:
a first linkage rod having a first annular body portion fixedly secured to and extending axially therefrom, the first annular body portion having an inner surface defining a first bore axially extending partially into the first annular body portion, the first annular body portion having a first axial end and second axial end, the first axial end being closed and the second axial end having an opening with a plug adjustably secured therein, the plug having a second bore extending therethrough, the first linkage rod being fixedly secured to a frame; a second linkage rod having a piston section extending axially therefrom, the piston section being coaxial with the first linkage rod and the plug, the piston section being disposed for rotation in the first bore, the inner surface surrounding the piston section, the second linkage rod extending through the second bore and rotatable relative to the plug, the piston section being axially restrained by the first end and the plug; and the piston section having a self-lubricating liner secured to at least one outer surface of the piston section and the self-lubricating liner being in sliding engagement with portions of the inner surface, the first end and a portion of the plug; wherein the liner is secured to the radially and/or axially outer surfaces of the piston section and has at least one groove therein for collection of wear materials and debris. |
