GROUND COIL FOR MAGNETIC LEVITAION RAILWAY

PURPOSE:To improve the alkali resistance of a ground coil, alleviate the thermal stress thereof, and enable bolts to be easily tightened additionally by laying a propulsive ground coil and a levitation guide ground coil on top of each other, and integrally securing both coils to a concrete side wall via a spacer. CONSTITUTION:A propulsive ground coil 1 is housed within a spacer 4, and a levitation guide ground coil 2 is laid thereon. Then, both of the aforesaid coils 1 and 2 are fixed to a concrete side wall 3 via bolts 5. Also, a projection 6 is formed in the spacer 4 for retaining and positioning the propulsive ground coil 1. The left end of a reverse side propulsive ground coil 1b is housed within a groove 7a formed with projections 6a and 6b, while the right end of a surface side propulsive ground coil 1a is housed within a groove 7b formed with projections 6b and 6c. According to the aforesaid construction, only one side of the propulsive ground coil 1 is housed within the spacer 4 without any contact with the side wall 3, thereby releasing thermal elongation due to a temperature difference to the other side. Also, the coils 1 and 2 can be integrally fixed to the side wall 3 with the bolts 5, and the additional tightening thereof can be easily undertaken.