| 摘要 |
The means comprises a flat plate having a mounting limb carried at substantially a right angle, for mounting thereof to a shaft support so that the plate will close upon an axial end of an earth cutter rotatably carried on the shaft. Thus, a clearance space defined between the earth cutter and the shaft is shielded against the entry of dust, rock chips, mud, water and such detritus. The shielding means is designed to prolong the life of bearing seals, and bearings as well, especially where such are in earth cutter use. |
