JPH0884404A - Automatic check and adjustment device for ground coil position for maglev system - Google Patents

Abstract

PURPOSE: To provide an automatic check and adjustment device for the ground coil position of a maglev system, which automatically detects the position of the ground coil and performs automatic adjustment thereof to ensure the smooth run of a high-speed vehicle and a comfortable riding. CONSTITUTION: A laser beam is made to pass along a traveling path and a four-divided plate-like light detector 3 is disposed at one end of a panel into which ground coil is installed, and a laser beam is made to pass through a small hole 4 provided in the central part of the four-divided plate-like light detector 3, and when the position of the ground coil 1 is erroneous, the miss of the ground coil 1 is detected by a difference in a photo-electron current of the four-divided plate-like light detector, and a signal current is amplified to a power current to automatically ensure the normal position of the ground coil 1.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] Maglev (sidewall type magnetic levitation transportation system) levitation / guidance ground coil is required to maintain its position (alignment of running path) with considerably strict accuracy in terms of ride comfort of the vehicle. The present invention relates to a maglev ground coil position automatic checking and adjusting device.

[0002]

2. Description of the Related Art In order to secure a comfortable riding comfort of a high-speed vehicle, a maglev needs to hold the position of the ground coil for both the levitation and guidance within a cross section of the traveling road with considerably strict accuracy.

As a method for ensuring the positional accuracy of the ground coil, Japanese Patent Application No. 5-178705 has already disclosed a method of manually adjusting the position of the coil in the cross section of the traveling path.

[0004]

Even if the structure for supporting the above-mentioned ground coil is constructed so as not to cause subsidence or deformation as much as possible, depending on the situation of the ground or the like, especially during the time immediately after construction, Since the sinking, the deformation and the like are considered to be unavoidable, the position of the coil must be constantly inspected and adjusted if necessary. If this is done according to the conventional track inspection and maintenance method, it is expected that considerable labor and time will be required.

In particular, when it is necessary to check the degree of deviation of the ground coil position of the Maghreb in order to determine whether or not to restart the operation after the occurrence of an earthquake that does not cause damage to the structure, this can be done. You only have to do this in a short time.

In response to such a demand, the present invention provides a device for automatically inspecting and adjusting the ground coil position of the maglev.

[0007]

[Means for Solving the Problems] A four-divided plate-shaped photodetector having a small hole in the center is attached to one end of a panel equipped with a maglev ground coil. Are arranged so as to pass through the small holes of the four-divided plate-shaped photodetector, and an electron flow generated by receiving light from a pair of photoelectric elements facing each other across the small hole of the four-divided-plate-shaped photodetector. Difference is amplified to power for moving and adjusting the ground coil. Here, when the laser beam is attenuated and detection is difficult, a laser amplifier is arranged, and when the traveling path is curved, the direction of the laser beam is adjusted by a prism.

In a maglev which comprises a guideway with a panel on which a ground coil is mounted, panel support walls are provided on both side surfaces of a vehicle traveling path, and the above-mentioned ground coil mounting panel is traversed across the traveling path inside the panel supporting wall. The panel is installed so as to be movable in the vertical and horizontal directions in the plane, and the difference in the electron flow generated by the pair of photoelectric elements facing each other of the four-divided plate-shaped photodetector is amplified and used as power, and the panel is used. Adjust the movement of.

[0009]

EXAMPLE An example of a panel type guideway will be described with reference to the drawings.

FIG. 1 (a) shows a panel 2 having the ground coil 1 mounted thereon, in which a four-divided plate-shaped photodetector 3 is installed in such a direction that a laser beam substantially parallel to the track can be detected. A small hole 4 is opened at the center of the four-divided plate-shaped photodetector 3, and when the ground coil position is proper, the small hole 4 is arranged in a straight line as much as possible. The position of the photodetector 3 is adjusted. In the figure, 19 and 19 'are vertical and horizontal mounting members for the four-division plate photoelectric detector 3 made of an angle member, and the detector 3 can be mounted in both vertical and horizontal directions along the slits provided in the mounting members. It is configured so that it can be moved and fixed at any position. 1 (b) is shown in FIG.
It is an AA view of (a), and when the laser beam cannot be accurately detected due to direct sunlight or the like, a hood 5 or the like is provided, and when the laser beam cannot be accurately emitted due to air fluctuations or the like. Provides a plastic tube or the like, and takes measures so that almost the entire stroke of the laser beam passes through it.

FIG. 2 shows an overall conceptual view of the apparatus. When the laser sighting device 6 irradiates the small hole 4 so as to continuously pass through it and the deviation of the position of the ground coil 1 exceeds the allowable limit, the light received by the element of the quadrant plate-shaped photodetector 3 is Make it possible to detect that they are not equal. Also ground coil 1
When the position is normal or the deviation is within the allowable limit, the vicinity of the central part of the light flux of the laser beam passes through the small hole 4, and the light received by the element of the four-division plate-shaped photodetector 3 is equal. The diameter of the light flux, the diameter of the small holes, and the detection mechanism are set to appropriate values so as to detect the amount.

When the light received by the one element facing the vertical direction or the horizontal direction of the four-divided plate-shaped photodetector 3 is not equal, the difference in the photoelectron flow is detected to determine the position of the ground coil 1. The deviation is detected, and the difference in the photoelectron flow is amplified to power for adjusting the position of the ground coil 1.

Thus, in order to keep the deviation of the ground coil 1 within the allowable limit, the panel end near the four-divided plate-shaped photodetector 3 and the end of the adjacent panel adjacent to this are moved up and down. Alternatively, the position of the ground coil 1 is automatically adjusted by moving it to the left or right (horizontal direction of the track cross section).

If there is a place where detection becomes difficult due to attenuation of the laser beam or the like, a laser amplifier is installed to amplify the laser beam.

In the portion where the traveling path is curved, the direction of the laser beam is changed by using a prism 7 as shown in FIG. 3, for example, and the quadrant plate-shaped photodetector 3 makes the laser beam the small hole 4 in the center. Devise so that they can be caught by. 3A is a side view of the prism 7, and FIG. 3B is a top view. FIG. 3 shows a case where a laser beam is refracted in a horizontal plane. In the case of refracting in the vertical direction as well, the prism itself is installed by rotating it with the incident light as an axis, or the second reflecting surface of the prism is not vertical.

The laser amplifier and the prism 7 are directly connected to the four-divided plate-shaped photodetector 3 so that the laser beam is automatically displaced within a certain range in a direction perpendicular to the laser beam to receive the laser beam at a predetermined portion. If necessary, it is linked with a gyro compass so that the laser beam does not deviate from a predetermined position.
If the accuracy of the gyro compass is insufficient, several reference points are provided at appropriately spaced locations around the gyro, and a predetermined course of the laser beam is secured by irradiating these points.

If it is difficult to detect the laser beam even if the laser beam is amplified, a laser is newly emitted by the laser sighting device 6, and the position of the ground coil 1 becomes appropriate even in the discontinuous portion of the laser beam. As described above, the position and direction of the laser sighting device 6 and the quadrant plate-shaped photodetector 3 are associated with each other.

Several reference points are set around the laser sighting device 6 at appropriate distances, and by irradiating these reference points, the position of the radiation starting point of the laser beam and the radiation direction can be adjusted appropriately. It should be For the direction of radiation,
If the accuracy can be ensured, it is also possible to emit the laser beam in an appropriate direction by interlocking the laser sighting device 6 with the gyro compass.

Next, an example of a position adjusting mechanism of the panel 2 having the four-divided plate-shaped photodetector 3 mounted thereon will be described with reference to FIG.
The basis of this mechanism is that the panel 2 is supported between the panel support wall 8 and the panel support wall 8 so as to be freely movable in the traveling path direction, and the adjacent end of the panel 2 on the long bridge is equivalent to one panel 2. Only the length of thermal expansion and contraction is connected so that relative movement can be made in the direction of the road. Also, by fixing the panel outside the long bridge in the direction of the traveling road, the panel 2 is held at substantially equal intervals,
Further, according to the instruction of the four-divided plate-shaped photodetector 3, the panel 2
By driving the position adjusting mechanism of (1), the panel can be moved within a certain range within the cross section of the road. In addition to the long bridge, the panels 2 may be individually fixed to the panel support wall 8 in the direction of the traveling path, or may be connected at appropriate intervals in the same manner as described above.

As shown in FIG. 4 (a), the panel 2 is arranged so as to abut on the panel support 10 provided on the panel support floor 9 at an oblique abutment surface, and the panel support 10 applies a main load. I will receive it. Panel 2 and panel support 10
Stands up along the panel support wall 8, and an oblique panel support member 11 is in contact with the upper portion of the panel support wall 8. An adjustment bolt 12 with a gear penetrates the panel support member 10 from the panel support wall 8, and an adjustment bolt 13 with a gear penetrates the panel support member 11 as well. The bolts 12 and 13 are screwed in via a gear. The panel 2 can be adjusted in the height direction by adjusting with an electric motor. An adjusting bolt 14 with a gear penetrates approximately the center of the panel support wall 8 and presses the panel spacing member 15, and the screwing of the bolt 14 is adjusted together with the adjustment of the bolts 12 and 13 to adjust the panel spacing member 15.
The position of the panel 2 in the horizontal direction within the cross section of the traveling path can be adjusted by changing the pressing force of. The electric motor drives by amplifying the difference in the electron flow generated by the pair of optoelectronic elements facing each other of the above-mentioned four-division plate photodetector 3.

To connect adjacent panels on a long bridge or the like, a panel connecting plate 17 as shown in FIG. 4 (c), for example, is engaged and sandwiched between the panel supporting member 11 and the gear adjusting bolt 13 of the panel 2. By doing.

For fixing the panel support wall 8 and the panel 2 outside the long bridge, for example, as shown in FIG. 5, both ends of the panel support member 11 are attached to the panel support wall 8 to secure the panel support member 1.
Fix at 8. In this way, even if the long bridge is thermally expanded and contracted, it can slide freely from the panel fixing point, so that the ground coils can be kept at a constant interval, and smooth running of the vehicle is ensured.

Two or more liners 16 made of synthetic resin or the like having an appropriate friction coefficient are sandwiched between the diagonal contacting surfaces of the panel 2, the panel support member 10, the panel support wall 8 and the panel support member 11. , Sliding when the temperature expands or contracts, and does not slide when the vehicle is braked.

[0024]

The effects of the present invention are as follows.

(B) When the structure sinks or deforms, especially when it is judged whether or not the vehicle operation can be restarted in Maghreb immediately after an earthquake that does not cause damage to the structure, the position of the ground coil is immediately and automatically checked and adjusted. Since it can be done, it does not require time and labor as in the case of the conventional method.

(B) Since the inclination of the laser beam is detected by the four-division plate photodetector and the ground coil is automatically adjusted vertically and horizontally within the cross section of the traveling road, a comfortable riding comfort of a high-speed vehicle is secured. I can.

[Brief description of drawings]

FIG. 1 (a) is a diagram showing a quadrant plate-shaped photodetector installed on a panel equipped with a ground coil in a direction such that a laser beam substantially parallel to a traveling path can be detected. (B) It is an AA line view of FIG.

FIG. 2 is a diagram showing an overall conceptual view of an apparatus.

FIG. 3 is a diagram showing that a prism is used to change the direction of a light beam so that a quadrant plate-shaped photodetector can catch a laser beam with a small hole in the center. (A) It is a side view of a prism. (B) It is a top view of a prism.

FIG. 4A is a diagram showing an example of a position adjusting mechanism of a panel on which a four-divided plate-shaped photodetector is mounted. (B) It is a BB view of FIG. (C) It is a figure which shows a panel connection board.

FIG. 5 (a) is a view showing a fixing state of the panel support wall and the panel outside the long bridge. (B) It is CC sectional view of FIG.

[Explanation of symbols]

1 ... Ground coil, 2 ... Panel, 3 ... Quadrant photodetector, 4 ... Small hole, 5 ... Hood, 6 ...
・ Laser sighting device, 7 ... Prism, 8 ... Panel support wall, 9 ... Panel support floor, 10 ... Panel support material, 11 ... Panel support material, 12 ... Gear adjustment Bolts, 13 ... Adjusting bolts with gears, 14 ... Adjusting bolts with gears, 15 ... Panel spacing holding material, 16
... Synthetic resin liner, 17 ... Panel connecting plate, 18
... Panel fixing material, 19 ... Photoelectric detector mounting member,
19 '... Photoelectric detector mounting member

Claims (3)

[Claims] 1. A four-division plate-shaped photodetector having a small hole in the center at one end of a panel of a panel-type guideway equipped with a maglev ground coil. The terrestrial coil mounting panel is arranged so as to pass through the small hole of the photodetector, and the difference in electron flow received by the pair of optoelectronic elements facing each other of the four-divided plate-shaped photodetector is measured in the transverse section of the traveling path. In the above, the maglev ground coil position automatic inspection and adjustment device is characterized by being amplified to power for moving and adjusting in the vertical and horizontal directions. 2. A maglev ground coil position automatic inspection / adjustment device according to claim 1, wherein a laser amplifier is arranged when said laser beam is attenuated and detection is difficult. 3. The maglev ground coil position automatic inspection and adjustment device according to claim 1, wherein the prism adjusts the direction of the laser beam when the traveling path is curved.