Shaft assembly for a vibratory roller
AssigneeM-B-W Inc.
InventorBenjamin J. Paske
Life of this patent
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Abstract
An eccentric shaft assembly for a vibratory roller utilizes a cylindrical tubular shaft that considerably reduces the weight of the assembly, decreases substantially oscillatory shaft deflection during rotation and thereby improves bearing and seal life. The eccentric weights are mounted on the interior of the tubular shaft, thereby simplifying manufacture and providing a smoother operation.
Claims9
A shaft assembly for a vibratory roller having a roller drum closed by annular end walls on opposite axial ends of the drum, said assembly comprising:
- a cylindrical hollow tubular shaft having a uniformly thin wall;
- eccentric weight means mounted on the interior wall of the tubular shaft and equally distributed axially within the tubular shaft;
- a pair of shaft ends enclosing the opposite axial ends of the tubular shaft;
- each shaft end including a stub shaft carrying a bearing and a seal and journaled in the drum end wall for rotation relative thereto;
- and
- a tubular shell enclosing the tubular shaft and operatively attached at opposite axial ends to the end walls for rotation therewith, the tubular shell and tubular shaft defining a sealed annular oil chamber.
An eccentric shaft assembly for a vibratory roller having a cylindrical roller drum with enclosing end walls on axial opposite drum ends, said assembly comprising:
- a cylindrical tubular shaft having axially aligned eccentric weights mounted adjacent the inner wall on opposite ends of the tubular shaft;
- a pair of shaft ends enclosing the axial ends of the tubular shaft, each shaft end carrying a bearing and a seal;
- an annular end cap mounted on each drum end wall and axially overlying a portion of a shaft end and receiving the bearing and seal to provide a journaled mounting of the tubular shaft for rotation relative to the drum;
- and,
- a tubular shell extending between the end caps and coaxilly enclosing the tubular shaft to define a sealed annular oil chamber.
Dependencies are inferred from the claim text.