JPS5855943B2 - Vehicle bogie connection structure in superconducting magnetic levitation vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bogie connection structure for a vehicle in a repulsive levitation type superconducting magnetic levitation vehicle that uses superconducting magnets to levitate.

In a conventional superconducting magnetically levitated vehicle, as shown in FIG. 1, for example, four bogies 2 are arranged in a row in the front and back direction under a car body 1, and the front and rear bogies 2 are arranged at each mutual end. are connected by a connecting link 3 and a lateral anchor 4,
It is planned that two superconducting electromagnets 5A and 5B are attached to the left and right sides of each truck 2, respectively, to perform floating propulsion guidance.

In this case, in order to generate an induced current in a normal current coil (not shown) arranged on the ground and to obtain a linear synchronous motor action, left and right superconducting electromagnets 5A, 5B, As shown in FIG. 1, the polarities of . . . are arranged so that adjacent ones are different from each other.

For this purpose, the front and rear electromagnets 5A and 5B are installed for each row on the left and right.
... generate mutual attraction, and when traveling on a straight road, the longitudinal attraction of the electromagnet array is balanced on the left and right sides, but when passing on a sharply curved road such as a branch branch, Since the electromagnets 2... are arranged in a broken line, the front and rear gaps between the left and right electromagnet rows become smaller and larger at the connection part of the trolley 2..., so the front and rear gaps between the electromagnets are At the point where the gap between the front and rear electromagnets on the opposite side becomes small, the attraction force between the carts becomes thicker than at the point where the gap between the front and back of the electromagnet on the opposite side becomes a dog.
... will be subjected to forces that will cause an even sharper turn of events.

Furthermore, even if either the left or right superconducting electromagnet quenches and loses its function as an electromagnet due to some kind of accident, it is expected that a force that strongly bends the front and rear carts relative to each other will still be generated.

The present invention has been made in view of the above circumstances, and its purpose is to prevent unnecessary angular bending between the front and rear bogies due to the imbalance of the left and right electromagnetic attraction forces acting between the front and rear bogies, as described above. To provide a bogie connection structure that allows safe travel.

An embodiment of the present invention will be described below with reference to FIG.

Note that this figure 2 is shown in the front-rear direction - as shown in figure 1 above.
FIG. 2 is an enlarged perspective view of one connecting end of the bogies 2 arranged in a row, showing a connecting link 3, a bogie lateral force direction anchor 4, and left and right superconducting electromagnets 5A and 5, similar to that shown in FIG.
I can see A.

More specifically, the bogie 2 has left and right side beams 2A and 2B constituting the bogie underframe, and a crossbeam 2c that connects both of them, and superconducting electromagnets 5A are disposed on the outer sides of the left and right side beams 2A and 2B.

5A is installed.

Although not shown, the truck 2 supports the vehicle body via a spring mechanism on its upper portion.

Here, one end of the single link 3 is connected to the intermediate part of the end cross beam 2C of the truck 2 via a pin 6, and the other end of the link 3 is adjacent to each other in the front and back via the pin, although not shown. It is connected to the cross beam at the end of the other bogie, and acts to maintain a constant gap between the ends of the front and rear bogies.

In addition, an arm 2D protrudes from one end of the end cross beam 2C.
One end of the bogie lateral force direction anchor 4 is attached, and the other end of the anchor 4 is attached to an arm (not shown) protruding from the other end of the end cross beam of another bogie, thereby connecting the mutual ends of the front and rear bogies. When the carts are connected in the left-right direction, the ends of the carts automatically move relative to each other in the left-right direction, resulting in a difference in the gap between the superconducting electromagnet and the ground-side coil, or contact with the ground-side coil, or only a specific cart is a superconducting electromagnet. This prevents the difference in excitation current from projecting in the left-right direction and causing turbulence in the airflow flowing along the sides of the vehicle, thereby preventing an increase in running resistance.

In the truck 2 having such a configuration, the left and right side beams 2A,
Torsion bar receiver 7A is located above the end of 2B.

7B, and a torsion bar 8 is rotatably inserted therethrough.

The upper ends of arms 9A and 9B hanging downward are connected to both ends of this torsion bar 8.

Further, 11A and 11B support both ends of a torsion bar receiving torsion bar 12 which is attached below the ends of the left and right side beams of other mutually connected carts not shown in FIG.

A torsion bar fixing fitting 13 is similarly provided at the center of the end cross beam of another truck, and fixes and supports the middle of the torsion bar 12.

The base ends of horizontally protruding arms 10A, 10B are coupled to both ends of the torsion bar 12, and the tips of the arms 10A, 10B are pin-engaged with the lower ends of the arms 9A, 9B.

To explain the functions of the present invention, link 3
maintains the gap between the ends of the front and rear bogies accurately, and precisely matches the front and rear gap between the superconducting electromagnets with the pitch of the linear synchronous propulsion coils on the ground side, thereby performing a filtering action.

In addition, as the ends of the front and rear bogies are strongly connected as described above, it is no longer necessary to connect the car bodies to each other, and a car body anchor (with a buffering function in the longitudinal direction) is used between the car body and the bogie. (not shown), and by adopting such a buffer mechanism, the car body does not need to have a strong structure that can withstand buffer shock, and it becomes possible to have an extremely lightweight car body structure.

Next, the function of the bogie lateral force direction anchor 4 is as described above, and by preventing relative lateral displacement of the mutual ends of the front and rear bogies and arranging the bogies smoothly with respect to the track, it reduces air resistance. Furthermore, there is no need to deform the bends in the flexible windproof membrane (not shown) provided to prevent abnormal wind flow from flowing between the bogie car bodies, which is advantageous in terms of vehicle structural design.

Here, in addition to the above-mentioned connecting link 3 and lateral anchor 4, there is a torsion bar 8 and an arm 9A.

9B and arm 10A, IOB and torsion bar 1
2, the gap between the ends of the front and rear bogies is first determined by the connection link 3, but when the front and rear bogies mutually swivel, the left and right arms 9A, 9
B is arm 10A.

10B in mutually different directions, the torsion bar 8 resists this and can provide a restoring force with a constant spring constant.

If this restoring force is set to an excessive value, it will exceed the guiding force that allows the train of bogies to curve appropriately when passing through branching and sharply curved roads, making it impossible for the vehicles to run, but it is important to set an appropriate restoring force. If this is done, it will have the effect of arranging and maintaining the bogies in an appropriate polygonal line, and it will be possible to prevent the bogies from buckling in a zigzag manner due to some kind of compressive force being generated in the entire bogie row, and at the same time. By creating an angle between the front and rear trucks, the front and rear superconducting electromagnets approach one side and move away from the other, which creates an imbalance in the left and right front and rear suction forces, which prevents the front and rear trucks from swerving more than necessary. When one superconducting electromagnet is in a non-excited state such as in a quench state, the cart is also prevented from bending due to the attractive force of the other superconducting electromagnet.

On the other hand, since the rotation of the torsion bar 12 is restricted by the torsion bar fixing fitting 13 in the center, it is possible to rotate the arms 10A and 10B around the torsion bar 12, but they are subject to a fairly strong restoring force. It turns out.

With this, the front and rear bogies are capable of relative rolling displacement, but they are connected with a rolling spring, and for this reason, places where the track is twisted, such as curved entrances or exits where the cant changes, should be adjusted appropriately. However, if one superconducting electromagnet is demagnetized due to quenching, and the buoyancy on the left and right sides becomes uneven and the trolley tries to tilt significantly, the torsion bar 1
2 and the arms 10A and 10B function to prevent excessive relative rolling displacement of the cart, making it possible to prevent problems such as running with an excessive inclination with only one cart.

In the above embodiment, the above-mentioned torsion bars 8 and 12 are used due to the structural arrangement shown in FIG. Kinds of anti-mechanisms and other arm IOAs,
It is also possible to apply a tightening mechanism having an appropriate spring action to 10B.

As described above, the present invention provides a link that connects the ends of the front and rear bogies with a constant gap in a vehicle that uses superconducting electromagnets to travel in levitated motion, and in which a large number of bogies are arranged at the bottom of the vehicle body and used in one row. , a mechanism for preventing relative lateral displacement between the bogies;
Since a mechanism is provided to apply a restoring force to the relative swivel displacement and relative rolling displacement between the bogies and restrain them appropriately, it is possible to obtain a superconducting magnetically levitated vehicle that can run extremely stably.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing an example of a vehicle bogie connection structure in a conventional superconducting magnetically levitated vehicle, and FIG. 2 is an enlarged perspective view of essential parts showing an embodiment of the present invention. 1... Vehicle body, 2... Bogie, 2A, 2B... Both sides beam, 2C... Cross beam, 2D... Arm, 3... Connecting link, 4... Bogie lateral anchor 5A, 5B...Superconducting electromagnet, 6...Pin, 7A, 7B...Torsion bar receiver, 8...1-John bar, 9A, 9B, 1
0A, 10B-...Arm 11A, 11B...Torsion bar holder, 12...Torsion bar 13...
Torsion bar fixing bracket.

Claims (1)

[Claims] 1. A connecting link that maintains the mutual ends of the front and rear bogies at a predetermined gap, which are disposed at the lower part of the vehicle body of a vehicle that travels by using superconducting electromagnets, and a mechanism that prevents relative lateral displacement of the mutual ends of the front and rear bogies; A vehicle bogie connection structure in a superconducting magnetic levitation vehicle, characterized in that the vehicle bogie connection structure in a superconducting magnetic levitation vehicle is characterized in that the relative swivel displacement and relative rolling displacement of mutual end portions of the front and rear bogies are connected by respective mechanisms that respectively apply restoring force and appropriately restrain the respective ends.