JPH0545721B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a guideway steel structure for a maglev railway.

[Prior Art and Problems] In the guideway steel structure of a maglev railway, an electrically closed circuit is formed by its constituent steel members such as steel plates, so when a magnetic field moves nearby, A loop current is generated in these closed circuits due to electromagnetic induction. This generated current acts as a running resistance of the vehicle in the form of joule heat of the steel member, resulting in a loss of moving energy. In order to solve such problems, it is possible to insulate a part of the closed electric circuit to avoid the generation of loop current, but there is a problem in that the mechanical strength is lost due to the insulation.

[Means for Solving the Problems] The present invention eliminates the above-mentioned drawbacks by using an insulator that does not impair mechanical strength between steel members such as iron plates that make up an electrically closed circuit. This prevents the generation of loop current due to electromagnetic induction by electrically insulating the two through the coupling.

[Example] Examples of the present invention will be specifically described below with reference to the drawings.

Figure 1 shows the joint point A between the truss bridge members in Figure 5.
The details are shown below. Figure 2 is a- of Figure 1.
It shows a cross section. FIG. 3 shows the joint point B between the steel members in FIG. FIG. 4 shows a sectional view taken along line bb in FIG. 3. In FIG. 1, FIG. 2, FIG. 3, and FIG. 4, as a method of joining steel members 1 to 1, an insulating plate 3 is sandwiched between the splice plate 2 and the steel member 1, and the bolt 4 is It is assembled by inserting an insulating ring 5 and tightening it with a nut 6. At this time, if a material with sufficient strength and friction properties is used for the insulating plate, the axial force introduced into the bolt 4 will cause the steel members 1 to 2 to
-Frictional force is transmitted to the steel member 1, and the strength of the joining mechanism can be ensured.

[Effects of the Invention] As explained in the above embodiment, the present invention provides electrical insulation between the steel members 1 and 1 by the insulating plate 3 and the insulating ring 5, and the connecting plate 2, the bolt 4, and the nut 6. combined. For this reason, even though the steel members such as steel plates that constitute the guideway structure of maglev railways have a loop-shaped structure, they do not form an electrically closed circuit, so the movement of the magnetic field causes Since no induction loop current is generated, running resistance and running energy loss of the vehicle can be prevented.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line a-a in FIG. FIG. 3 is a diagram showing the connecting portion of the rear member. Figure 4 is the third
It is a bb sectional view of the figure. FIG. 5 is a diagram illustrating a transformer bridge according to the present invention. DESCRIPTION OF SYMBOLS 1... Steel member, 2... Joint plate, 3... Insulating plate, 4... Bolt, 5... Insulating ring, 6... Nut.

Claims (1)

[Claims] 1. In the guideway steel structure of a maglev railway, the steel members such as steel plates that are the constituent members are connected to each other without loss of mechanical strength, and the loop current caused by electromagnetic induction is interrupted by sandwiching an insulator. A magnetic levitation railway guideway structure characterized by having a joining mechanism.