| 摘要 |
PROBLEM TO BE SOLVED: To eliminate easily and reliably in a short time a displacement vertical to a road surface and lateral to the course of travel of an automobile by connecting a body installed on the surface of a motor road and a supporting portion to support a magnetic marker by a spacer portion. SOLUTION: The body portion 2 is formed of leg portions and a supporting portion 4 and is made from a nylon resin, and the supporting portion 4 is formed from iron, supporting a magnetic marker made up of a non-magnetic stainless case, a lid and a sintered magnet. The case and the lid are welded to secure the corrosion resistance of the sintered magnet that produces a strong magnetic field in that. When fixing the magnetic marker, a hole larger in diameter and deeper than the marker is made on a road surface, mortar as an adhesive is poured to fill the hole up to the half level of the hole. In addition, the protrusion 41 of the construction jig 1 and the recess of the magnetic marker are aligned and the marker supporting portion is installed from above the hole of the jig 1. After that, if mortar is insufficiently filled, additional mortar is supplied and if oversupplied, it is removed, thereby making the magnetic field of the magnetic marker vertical to a road surface and facilitating construction works to fix the magnetic marker. |
