JPH0789684B2 - Trajectory structure of magnetically levitated vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a track structure of a suction type magnetic levitation vehicle, and particularly uses the lower surface of a rail for levitation and at the same time, uses the upper surface of the rail as a propulsion linear motor. The present invention relates to a track structure of a magnetically levitated vehicle that also serves as a secondary side reaction plate.

[Prior art and its problems]

The track of the suction type magnetic levitation vehicle has a sleeper 3 installed horizontally on the upper part of the track girder 2 having one or two parallel lines, as shown schematically in FIG. 6 to FIG. These sleepers 3
Rails 4 and 4 are supported at the ends of the rails. The linear motor 6 of the module 5 corresponding to the truck of the conventional train, the levitating magnet 7 and the skids 8 and 9 are arranged so as to sandwich the rails 4 and 4 from above and below. It is set up. 10 is a gap sensor, 11
Indicates a reaction plate.

By the way, in the track of the conventional magnetic levitation vehicle,
The gap between the linear motor 6 and the levitation magnet 7 and the rail 4 is set to a constant value so that they do not come into contact with each other at high speeds, so that there is a sufficient gap size when traveling at low speeds.

According to the results of a running experiment in which several kinds of vehicles were actually run,
It was found that when the speed exceeded 300 km, a gap of about 8 m / m was required, but at a time of 100 km or less, half, about 4 m / m, was sufficient.

However, if the gap is wide, a large amount of electric power is required for the levitation magnet 7 to generate the same buoyancy, and in particular, an extremely large amount of electric power is required to levitate the vehicle 1 while it is stopped at a station building or the like. Will be required. On the other hand, in the case of a linear motor as well, when the above-mentioned gap is widened, the power factor is lowered and the efficiency is deteriorated. Therefore, there is a problem that a large amount of electric power is still required to produce the necessary thrust.

All of the above causes heat generation of the levitating magnet and linear motor, and in order to eliminate this, it is possible to install a special cooling device or increase the size of the equipment to reduce the heat generation amount, but these are all This leads to an increase in vehicle weight, creates a vicious cycle of creating a new cause of heat generation, and is a major problem related to the establishment of the entire suction type magnetic levitation vehicle system.

[Object of the Invention]

The present invention has been made with the aim of improving the problems of the above-mentioned prior art, and has been made with the object of reducing the consumption of electric power and eliminating the problems associated with heat generation. The present invention provides a track structure for a magnetically levitated vehicle.

[Outline of Invention]

In order to achieve the above object, in the track structure according to the present invention,
In a suction type magnetic levitation vehicle in which the left and right levitation rails, which are opposite sides of the suction type magnetic levitation magnet, are also used as reaction plates of a linear motor,
A magnetic levitation magnet and a linear motor are arranged at positions facing each other across a rail, and the magnetic levitation magnet and the gap sensor of the rail in a low-speed running section near a station building, a sharp curve, a steep slope, etc. A thickening portion is provided in a portion facing to, so that the clearance between the floating magnet, the linear motor, the skid and the rail in the low speed traveling section is automatically narrowed.

Example of Invention

Hereinafter, the present invention will be described with reference to the embodiments shown in FIGS. 1 to 5 and the same reference numerals will be used for portions common to FIGS. 6 to 9.

FIG. 1 illustrates an outline of a part of the orbit according to the present invention, which is a braking / landing / floating / acceleration section 1 before and after the station building 12.
3, sections with sharp curves 14 and steep slopes 15 are shown with hatching.

FIG. 2 exemplifies a partial cross section of a transition point from a high-speed running section without hatching to a low-speed section with hatching in FIG. 1, and shows how the rail changes in the present invention. Shows.

FIG. 3 shows the difference between the cross-sectional shape of the low-speed rail 4'according to the present invention and the cross-sectional shape of the conventional high-speed rail 4; in the present invention, the lower surface of the portion facing the gap sensor 10 is shown. A thickened portion 16 (which may be on the upper surface side) and thickened portions 17, 17 of the magnet attraction flange are provided. Figure 4,
FIG. 5 is a sectional view taken along line AA and BB in FIG. 2, respectively. FIG. 4 shows a high speed rail 4 and FIG. 5 shows a change in a gap between a low speed rail 4 ′ and each part of the module 5. It shows the state. That is, the sensor gap 18 of the gap sensor 10 is controlled so as not to change in any case, but the skid gap 19, the linear motor gap 20, and the magnet gap 21 change narrowly as indicated by 19 ', 20', and 21 ', respectively. It is supposed to do.

Therefore, in the high-speed running section, the gap 20 between the linear motor 6 of the vehicle and the rail (reaction plate 11) and the gap 21 between the magnetic levitation magnet and the rail provide a gap that does not contact even when the vehicle vertically moves during high-speed running. Therefore, in the low-speed traveling section, both the gap 20 'between the linear motor 6 and the rail and the gap 21' between the magnetic levitation magnet 7 and the rail are reduced, so that the vehicle can travel efficiently with a small amount of electric power.

〔The invention's effect〕

As described above, the track structure of the magnetic levitation vehicle of the present invention is the attraction type magnetic levitation vehicle in which the left and right levitation rails that are the counterparts of the attraction type magnetic levitation magnet are also used as the reaction plates of the linear motor. , A magnetic levitation magnet and a linear motor are arranged at positions opposite to each other across the rail, and the magnetic levitation magnet on the rail in a low-speed running section where low-speed running is predicted, such as near a station building, a sharp curve, or a steep slope. Also, a thickened portion is provided in a portion facing the gap sensor to automatically narrow the gap between the levitation magnet, the linear motor, the skid and the rail in the low speed running section, so that the vehicle floats and lands in the low speed running section.・ The power required for acceleration / deceleration can be significantly reduced, which reduces the amount of heat generated by heat as in the past. It is not necessary to attach a special cooling device, the increase in vehicle weight can be avoided, and the increase in vehicle weight associated with attaching a cooling device to cool the conventional heat generation, resulting in power consumption , And therefore the vicious cycle of further increase in the amount of heat generation can be cut off, whereby the suction path of the magnetically levitated vehicle system can be completely eliminated. Further, in the present invention, it is only necessary to change the wall thickness of the rail in the low-speed traveling section, and the rail in the high-speed traveling section may be the same as the conventional one, so that no special devices are required, and the vehicle is easy to implement. No increase in weight. Further, in the low speed traveling section, the gap between the linear motor and the reaction plate becomes small, so that various effects such as the characteristics of the linear motor can be enhanced can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic plan view showing an embodiment of a track structure of a suction type magnetic levitation vehicle according to the present invention, and FIG. 2 is each II-II in FIG.
FIG. 3 is a side view, FIG. 3 is a cross-sectional view of a low speed rail according to the present invention, FIGS. 4 and 5 are AA, BB cross-sectional views of FIG. 2, and FIG. FIG. 7 is a side view showing an example of a suction type magnetic levitation vehicle, FIG. 7 is a sectional view taken along line VII-VII of FIG. 6, FIG. 8 is a sectional view of one side module, and FIG. 9 is a side view of one module. 1 ... Vehicle, 2 ... Track girder, 3 ... Sleepers, 4 ... High-speed rail, 4 '... Low-speed rail, 5 ... Module, 6
...... Linear motor, 7 ・ ・ ・ Levitation magnet, 8,9 …… Skid, 10 …… Gap sensor, 11 …… Reaction plate, 12 …… Station building, 13 …… Brake / landing / levitation / acceleration section, 14 …… Sudden Curve deceleration section, 15 …… steep slope section, 16 ……
Gap sensor Scanning surface thickened area, 17 ...... Floating magnet suction flange thickened area, 18 ... Sensor gap, 19,19 '...
… Skid gap, 20,20 ′ …… Linear motor gap, 21,21 ′ …… Magnet gap.

Claims (1)

[Claims] 1. A suction type magnetic levitation vehicle in which left and right levitation rails, which are opposite sides of a suction type magnetic levitation magnet, are also used as reaction plates of a linear motor. In the vehicle, a magnetic levitation magnet and a linear motor are provided in the vehicle. It is installed at opposite positions, and a thickening part is provided at the part facing the magnetic levitation magnet and the gap sensor of the rail in the low-speed running section near the station building, sharp curve, steep slope, etc. A track structure of an attraction type magnetic levitation vehicle, characterized in that the gap between the levitation magnet, the linear motor and the skid and the rail is automatically narrowed in the low-speed traveling section.