| 摘要 |
PROBLEM TO BE SOLVED: To install a walking guidance marker firmly by the simple execution of works, and to ensure the appearance of a road surface by integrally mounting an engaging shaft, in which an expanding slot is formed in the axial direction on the end section side, on the rear of a projecting disk section, in which a surface is protruded. SOLUTION: Lower holes are dug at the proper places of a road surface A by a required number. Fittest adhesves to the road surface A and the quality of materials of projecting disk bodies 2 and engaging shafts 3 are inserted into the lower holes and the recessed sections 4 of the projecting disk bodies 2 formed as required as necessary, and the pointed ends of wedges 6 are introduced into the crossed sections of a plurality of expanding slots formed at the end sections of the engaging shafts 3 and wedge inserting holes formed as required, and fixed temporarily. The engaging shafts 3 are admitted into the lower holes by inserting the wedges 6 into the lower holes under the state, the thick ends of the wedges 6 are abutted against the bases C of the lower holes, and the surfaces of the projecting disk bodies 2 are struck or pushed. Accordingly, since the pointed ends of the wedges bite into the engaging shafts 3, the engaging shafts 3 are split in the axial direction while using the expanding slots as boundaries and the diameters of the engaging shafts 3 are expanded, and the split engaging shafts 3 are retained firmly into the lower holes. |
