| 摘要 |
PURPOSE: A bolt-bracket coupling structure for a roadside tree protection cover is provided to use the roadside tree protection cover for a long time without the change of the location. CONSTITUTION: A roadside tree protection cover includes cover units(10, 10`) and a ring type cover plate(20) located on a circular space unit on the center of the cover. A bolt-bracket coupling structure comprises a coupling unit connecting the cover units and the ring type cover plate. The coupling unit includes a bracket with more than two fastening holes(30a) having screw threads, and bolts inserted into the cover units or the ring type cover plate and coupled to the fastening holes. Recessed units are formed on the cover units and the ring type cover plate for locating the bracket. |
