| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface grinding device for a pavement surface, which has a small drive energy, can be used for a long period of time, and can smoothly grind a surface without damaging the pavement surface.SOLUTION: A grinding body (6) of a grinding device (1) for a pavement surface is comprised of a revolving shaft (13) and several blades (14). The blade (14) includes: a substantially rectangular plate (15) having a prescribed plate thickness; and circular arc-shaped grinding pieces (16) respectively provided in marginal parts of both short sides of the plate (15), and a shaft hole (18) into which the revolving shaft (13) is inserted is opened in a center of the plate (15). In the grinding body (6), the plurality of blades (14) are superposed on each other by being shifted from each other in a rotation direction so that the grinding pieces (16) do not interfere with each other. The grinding piece (16) has a larger thickness than that of the plate (15), and grinding widths ground by the grinding pieces (16) of any adjacent blades (14) when the grinding body (6) rotates to grind the surface of the pavement surface are overlapped by a prescribed overlapping margin (26). |
