JPH03112306A - Fixing method for ground coil in magnetic levitation railroad - Google Patents

Abstract

PURPOSE:To improve flatness of ground coil to be fixed by passing laser beam through respective grooves in existing ground coils fixed to a guide way and ground coils newly fixed thereto. CONSTITUTION:A laser beam is projected from a transmitter 4a along ground coils 2 to a receiver 5 in order to determine whether the ground coils are fixed in place. A position detecting monitor 6a is previously provided with a program for operating the difference between a regular position and a measured position, and regular position information. If a ground coil 2 to be fixed to a guide way is shifted from the regular position, the positional shift is displayed. Consequently, the ground coil 2 can be fixed while adjusting the position according to the display on the position detecting monitor 6a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field] The present invention relates to a method for installing ground coils in maglev trains.

[Conventional technology]

14 = Among the so-called magnetic levitation railways, superconducting magnets are placed at the bottom of both sides parallel to the running direction of the vehicle, and the guideway of the vehicle has the above-mentioned superconducting magnets. It is known that a ground coil is arranged so as to always face the superconducting magnet as the vehicle travels.

For this reason, the guideway has a U-shaped cross section, and a plurality of ground coils are sequentially arranged in parallel in the traveling direction of the vehicle on both side walls of the recessed portion.

Conventionally, the above-mentioned ground coil was installed by providing a groove in the side wall of the guideway to determine the reference position, and installing the ground coil by embedding it in this groove. reference).

[Problem to be solved by the invention]

However, when installing the above-mentioned ground coils, it has been considered that the surface of the ground coils installed in parallel (the surface facing the superconducting magnet of the vehicle) does not have sufficient flatness.

In other words, the surface flatness of the ground coils installed in parallel is not sufficient, which means that when the vehicle is actually running, the superconducting magnets fixedly placed on the vehicle side and the ground coils are always equidistant. This means that it is not in the state of . Therefore, this causes vibrations mainly in the left and right directions in the vehicle body, which is undesirable because it causes discomfort to the passengers.

Therefore, the present invention has been made based on these circumstances, and its purpose is to provide a surface facing a superconducting magnet fixedly arranged on a vehicle when arranging ground coils in parallel. A method is provided for installing ground coils in maglev railways that can improve flatness.

[Means to solve the problem]

In order to achieve such an object, the present invention arranges superconducting magnets on both sides of a vehicle parallel to its running direction, and in the guideway of the vehicle, superconducting magnets are arranged on both sides parallel to the running direction of the vehicle. In a magnetic levitation railway in which ground coils are arranged side by side in positions facing the superconducting magnets, grooves extending in the direction in which the ground coils are arranged side by side are formed on the surface of each of the above ground coils facing the superconducting magnets. A laser beam is passed through each part of the ground coil that has already been installed on the guideway and the ground coil that is about to be installed, and the position of the ground coil that is about to be installed is determined in a direction perpendicular to the surface facing the superconducting magnet. It is characterized by this.

Further, the present invention provides for superconducting magnets to be disposed on both side surfaces parallel to the traveling direction of the vehicle, and for the guideway of the vehicle to be placed at a position facing the superconducting magnets as the vehicle travels. In a magnetic levitation railway in which ground coils are installed in parallel, a protrusion extending in the direction in which the ground coils are arranged in parallel is formed on the surface of each of the above-mentioned ground coils facing the superconducting magnets, A laser beam is irradiated under the same conditions to each protrusion of the ground coil and the ground coil to be installed, and the reflected beam is detected under the same conditions. If the detected values are the same, it is necessary to install the The method is characterized in that the ground coil is positioned in a direction perpendicular to a surface facing the superconducting magnet.

[Effect]

In this way, grooves extending in the direction in which the ground coils are installed in parallel are formed on the surface of each ground coil facing the superconducting magnet of the vehicle, so that the ground coils that have already been installed on the guideway and the ground coils that are about to be installed are connected to each other. By allowing the laser beam to pass through each part of the coil, the straightness of the laser beam can improve the flatness of the ground coil to be attached to the guideway compared to the ground coil already attached to the guideway.

This eliminates the need for any of the ground coils installed in parallel to protrude toward the vehicle side from other ground coils or to be installed in a bowed position, which can mainly prevent left and right vibrations on the running vehicle. Become something.

Further, in addition to forming grooves in the ground coils, protrusions extending in the direction in which the ground coils are arranged in parallel are formed on the surface of each ground coil facing the superconducting magnet, A laser beam is irradiated under the same conditions to each protrusion of the ground coil that has already been installed on the guideway and the ground coil that is about to be installed, and the reflected beam is detected under the same conditions, and the detected values are the same. In this case, the same effect can be obtained by positioning the ground coil to be installed in a direction perpendicular to the surface facing the superconducting magnet.

In addition, by performing the above-mentioned inventions after installing the ground coils, it is also possible to discover errors in the installation of each ground coil or to detect positional changes of each ground coil due to changes over time. .

〔Example〕

Hereinafter, an embodiment of a method for installing a ground coil in a magnetic levitation railway according to the present invention will be described.

FIG. 1 shows a state in which a ground coil 2 is arranged on a guideway 1. Ground coils 2 are arranged in parallel along the longitudinal direction of the guideway 1 on both side walls of the concave portion of the guideway 1 having a cross-sectional shape.

A vehicle (not shown) is positioned within the recess and runs. Superconducting magnets are fixedly arranged on both side surfaces parallel to the running direction of the vehicle, and these superconducting magnets face the ground coil 2.

The above-mentioned ground coil 2 is made up of two layers of panel-shaped panels, and includes a propulsion coil and a levitation guide coil. That is, each ground coil 2 is formed by winding an aluminum conductor and molding it using an epoxy resin mold, an SMC (sheet molding compound) mold, or the like.

This can be attached directly to the guideway 1, or concrete can be poured around the molded ground coil 2 to form a panel. At this time, of the two-layer ground coil 2, the ground coil 2a on the side where the vehicle passes is a flat surface in order to reduce wind noise generated when passing at high speed and to reduce air resistance. A groove 3 is provided on the surface of the ground coil 2a facing the vehicle. This groove 3 can be easily formed by previously forming a groove in a molding die when molding the ground coil 2. FIG. 2 is an external view of the ground coil 2 shown in FIG. 1 as a single item.

Next, the mounting and position detection means for attaching the ground coil 2 to the guideway 1 will be explained with reference to FIGS. 11 and 12.

In FIG. 11, a laser beam emitting device 4a and a power supply unit 1-4b for supplying electric power are arranged on one side, and a laser beam receiving device 5 and a position detection monitor 6a are arranged near the groove 3 of the ground coil 2 for position detection on the other side. and a power supply unit 6b that supplies power. As shown in FIG. 12, a laser beam emitted from the light emitting device 4a is passed along the ground coil 2 and received by the light receiving device 5 to measure whether the position of the ground coil 2 is accurate. do. A program for calculating the difference between the specified position and the measured position and specified position information are input into the position detection monitor 6a in advance. Therefore, if the ground coil 2 to be attached to the guideway is deviated from the specified position, a message 11- to that effect will be displayed. On the other hand, guideway 1
is made of concrete, and the ground coil 2 is mounted on a surface with large and small irregularities, perpendicularity to the bottom, and parallelism of the side walls facing on both sides. It is difficult to directly mount the ground coil 2 at a prescribed position with high precision, but the terrestrial coil 2 can be mounted while adjusting the position based on the display on the position detection monitor 6a. A plastic molded plate or the like is used as an adjustment spacer. Thereby, the ground coil 2 can be attached to the guideway 1 with high precision.

Next, even after construction, the ground coil 2 is constantly subjected to vibrations caused by passing vehicles. It is also subject to vibrations caused by earthquakes. It is conceivable that this may cause the attachment of the ground coil 2 to become loose over a long period of time. Therefore, it is important to periodically inspect whether the ground coil is installed at a predetermined location.

In such a case, as shown in FIG. 13, the light emitting device and the power supply unit are combined as a set, and the light receiving device, the position detection monitor, and the power supply unit are connected to each other in a cellar 12, and the self-propelled vehicles 7a and 7b are connected to each other. By mounting it on the machine, constant inspection becomes possible.

In the above-described embodiment, one groove is formed in the ground coil 2, but two grooves may be formed in parallel. In this case, the distance between each part in the horizontal direction can be detected, and the verticality of the ground coil with respect to the bottom surface can also be easily detected.

Further, in the above-described embodiment, the case where grooves are formed in the ground coil 2 has been described, but a convex strip may also be formed. The external view when two of these protrusions are formed is shown in the third figure.
As shown in the figure. In the figure, 3a and 3b are protrusions. In this case, as shown in FIG.
and the light receiving section 11 are installed under the same conditions with respect to the protrusion 3a, and by detecting the sensitivity of the reflected light of the laser beam irradiated to the protrusion 3a, it is possible to detect the positional deviation of the protrusion 3a, that is, the ground coil. 2 positional deviation can be detected.

Furthermore, although the grooves or protrusions described above are all semicircular in cross section, it goes without saying that they may have any shape as shown in FIGS. 4 to 10.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, grooves extending in the direction in which the ground coils are arranged in parallel are formed on the surface of each terrestrial coil facing the superconducting magnet of the vehicle, and the guideway By passing a laser beam through each part of the ground coil that has been installed on the guideway and the ground coil that is about to be installed, the straightness of the laser beam allows the laser beam to pass through the ground coil that has already been installed on the guideway and the ground coil that is about to be installed. flatness can be improved.

This means that among the ground coils installed in parallel, there are no coils that are attached to the vehicle in a protruding or retracted state from other ground coils, which can mainly prevent left and right vibrations in the running vehicle. Become something.

Further, in addition to forming grooves in the ground coils, protrusions extending in the direction in which the ground coils are arranged in parallel are formed on the surface of each ground coil facing the superconducting magnet, and the guideway A laser beam is irradiated under the same conditions to each of the protrusions of the ground coil installed on the ground coil and the ground coil that is about to be installed, and the reflected beam is detected under the same conditions, and if the detected values are the same. A similar effect can be obtained by positioning the ground coil to be installed in a direction perpendicular to the surface facing the superconducting magnet.

In addition, each of the two inventions is carried out after the coils are installed, so that it is possible to discover errors in the installation of each terrestrial coil or to detect positional changes of each terrestrial coil due to changes over time. It also becomes like that.

[Brief explanation of drawings]

Fig. 1 is an external view of a guideway showing an embodiment of the present invention, Fig. 2 is an external view of an embodiment of a ground coil applied to an embodiment of the present invention, and Fig. 3 is an external view of the above-mentioned ground coil. 4 to 10 are cross-sectional views showing the form of grooves or protrusions formed on the ground coil, and FIGS. 11 and 12 are external views showing other embodiments of the ground coil according to the present invention. FIG. 13 is an explanatory diagram showing an example of the mounting method, FIG. 13 is an explanatory diagram showing an example of the method for inspecting the position of a ground coil according to the present invention, and FIG. 14 is an explanatory diagram showing an example of the method for inspecting the position of a ground coil according to the present invention. FIG. ■... Guide rail, 2 Ground coil, 3... Groove,
3a, 3b...Convex strip, 4a...Light emitting device, 5...
Laser beam receiver.

Claims (1)

[Claims] 1. In a vehicle, superconducting magnets are disposed on both sides parallel to the traveling direction, and in a guideway of the vehicle, the superconducting magnets are opposed to the superconducting magnets as the vehicle travels. In a magnetic levitation railway in which ground coils are arranged in parallel at positions, a groove extending in the direction in which the ground coils are arranged in parallel is formed on the surface of each of the above-mentioned ground coils facing the superconducting magnet, and the ground coils are already attached to the guideway. A laser beam is passed through each groove of the ground coil that has been installed and the ground coil that is about to be installed, thereby positioning the ground coil that is about to be installed in a direction perpendicular to the surface facing the superconducting magnet. How to install ground coils on maglev trains. 2. In the vehicle, superconducting magnets are arranged on both sides parallel to the running direction, and in the guideway of the vehicle, ground coils are arranged in positions facing the superconducting magnets as the vehicle runs. In the magnetic levitation railway installed in the magnetic levitation railway, a groove extending in a direction in which the ground coils are arranged in parallel is formed on a surface of each of the above-mentioned ground coils facing the superconducting magnet. ground coil. 3. In the vehicle, superconducting magnets are arranged on both sides parallel to the running direction, and in the guideway of the vehicle, ground coils are arranged in a position facing the superconducting magnets as the vehicle runs. In the magnetic levitation railway that is installed, a groove extending in the direction in which the ground coils are arranged side by side is formed on the surface of each of the ground coils facing the superconducting magnet, and a laser beam passes along the inside of this groove. A method for inspecting the position of a ground coil in a magnetic levitation railway, which is characterized by inspecting whether or not it is. 4. In the vehicle, superconducting magnets are arranged on both sides parallel to the running direction, and in the guideway of the vehicle, ground coils are arranged in a position facing the superconducting magnets as the vehicle runs. In the magnetic levitation railway that has been installed, a protrusion extending in the direction in which the ground coils are arranged side by side is formed on the surface of each ground coil facing the superconducting magnet, and the ground coils that have already been installed on the guideway and the ground coils that are to be attached to the guideway are connected to each other. Each projection of the ground coil to be installed is irradiated with a laser beam under the same conditions, and the reflected light is detected under the same conditions. If the detected values are the same, the ground coil to be installed is A method for installing a ground coil in a magnetic levitation railway, characterized by positioning in a direction perpendicular to a surface facing the superconducting magnet. 5. In the vehicle, superconducting magnets are arranged on both sides parallel to the running direction, and in the guideway of the vehicle, ground coils are arranged in a position facing the superconducting magnets as the vehicle runs. In the magnetic levitation railway installed in the magnetic levitation railway, a protrusion extending in a direction in which the ground coils are arranged in parallel is formed on a surface of each of the above-mentioned above-mentioned coils facing the superconducting magnet. ground coil. 6. In the vehicle, superconducting magnets are arranged on both sides parallel to the running direction, and in the guideway of the vehicle, ground coils are arranged in a position facing the superconducting magnets as the vehicle runs. In the magnetic levitation railway, a protrusion extending in the direction in which the ground coils are arranged in parallel is formed on the surface of each terrestrial coil facing the superconducting magnet, and a laser beam is applied to each terrestrial coil under the same conditions. A method for inspecting the position of a ground coil in a magnetic levitation railway, characterized by irradiating a light beam, detecting the reflected light beam under similar conditions, and inspecting whether the detected values are the same.