JPS5814122B2 - Normal conductive magnetic levitation vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling a normally conducting magnetically levitated vehicle.

Generally, in this type of levitation vehicle, when the levitation electromagnet is deenergized and in a non-energized state, for example in a garage, the gap between the rail and the levitation electromagnet is at its maximum.

Therefore, if an attempt is made to levitate the vehicle from this state using only the levitation electromagnet, a large current will be required, which will require a large power source and a large electromagnet, resulting in an increase in the weight of the vehicle.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a control method for a normal conductive magnetic levitation vehicle that can obtain sufficient levitation force without increasing the weight of the vehicle.

The configuration of an embodiment of the present invention will be described below with reference to FIGS. 1 and 2. Reference numeral 1 indicates a vehicle body, 2 and 3 levitation electromagnets, and
, 5 are guide electromagnets which face floating rails 6, 7 and guide rails 8, 9 to keep the vehicle floating.

Reference numeral 10 is attached to the vehicle body side or is a linear motor primary and faces a linear motor secondary 11 to obtain the thrust necessary for running the vehicle.

12.13 is the levitation electromagnet 2, 3 and the guide electromagnet 4,
This is the arm that attaches 5 to the vehicle body.

Reference numerals 15 and 16 indicate safety wheels, which can roll in contact with the upper end surfaces of guide rails 8 and 9 and receive the load of the vehicle body as needed.
, 16 are rotatably connected to the beam 14, and a spring device such as an elastic member 17, 18 is attached to the upper part of the beam to support the vehicle body load.

Here, a fluid operating device 19.20 is arranged at both ends of the beam 14 and a position close to the arm 12.13 on the vehicle body side, so that the beam 14 can be pushed up against the force of the elastic member 17.18 as necessary. It has become.

Reference numeral 21 denotes a beam that supports the left and right floating rails 6, 7 and guide rails 8, 9, and is arranged on the girder 22 at a predetermined interval.
has a certain length, and is held by a pier 23 installed at a gap corresponding to the length of the beam 22.

Next, the operational configuration of the fluid operating device and the safety wheels will be explained with reference to FIG.
．． 16 is installed.

At both ends of the beam 14 are attached fluid operating devices 31, 32 consisting of pistons fitted into cylinders.

37 is a fluid pressure source such as air or oil pressure; 36 is a fluid pressure source pipe connected to a pipe 33 from the cylinder 19.20 via a solenoid valve 34; and the pipe 33 is connected to a discharge pipe 35 via a solenoid valve 34. It is combined with

Therefore, the safety wheels 15, 16 can be freely raised or lowered by the action of the solenoid valve 34.

It should be noted that what is shown in these explanatory drawings is only the parts necessary for the configuration of the present invention, and it goes without saying that various parts necessary for constructing the vehicle are omitted.

Next, to explain the function of this device, when this normal conductive magnetically levitated vehicle is parked in a garage etc., the fluid operation device 1
The internal pressure at 9.20 is O, and the safety wheels 15.16 are receiving the entire load of the vehicle body.

At this time, the gap between the levitation electromagnets 2 and 3 and the levitation rails 6 and 7 is set to an extremely small value, that is, the necessary gap value is such that the vehicle does not come into contact with the rails 6 and 7 while the vehicle is running due to the deformation of the rails 6 and 7. An elastic member 1718 is set at the levitation rail 6, 7, or if necessary, a stopper is installed to prevent the elastic member 17. Good too.

Next, to explain the procedure when starting traveling, first, after confirming that fluid pressure has been accumulated in the fluid pressure source 37, the levitation electromagnets 2 and 3 are energized and energized.

In this case, almost all of the vehicle body load is on the safety wheels15.16
Since the levitation electromagnets 2 and 3 are supported by
Since the gap with No. 3 is the minimum required value, the current may be extremely small.

When the electromagnetic valve 34 is energized and fluid pressure is applied from the fluid pressure source 37 to the fluid operating device 19.20, the piston 31
, 32 rises, the elastic members 17 and 18 are compressed by the piston pushing force, and the beam 14 rises. However, in this case, the levitation electromagnets 2 and 3 have started operating, so the car body maintains the required minimum gap. Safe wheels that will not sink as they are 15,
16 separates from the upper ends of the guide rails 8 and 9 and enters a completely floating state.

For this reason, the safety wheels can be raised to a height that does not allow them to come into contact with the rails while the vehicle is running.

As described above, the present invention provides a mechanism that directly transmits the vehicle body load to the rails when the levitation electromagnet is deenergized and is not energized, thereby minimizing the gap between the rails and the levitation electromagnet, and disables the mechanism while driving. Since the levitation electromagnet is pulled upward and the vehicle is run with the required minimum gap, a large suction force is not required when the levitation electromagnet changes from a non-energized state to an energized state, so a large power source and a large electromagnet are not required. Therefore, it is possible to suppress an increase in the weight of the vehicle.

In addition, the elastic members 17 and 18 are connected to the levitation electromagnet 2,
If the safety wheels 15 and 16 are used as rolling elements, in addition to acting as a shock absorber against the sinking car body when the safety wheels 15 and 16 fail, the electromagnetic valve 34 is operated to absorb the weight of the car body on the rolling elements. It has many advantages, such as being able to apply emergency braking by activating a solenoid valve.

In addition to this, while stopped at a station etc., safety wheels 15.1
6 is lowered to receive the vehicle body load, and the levitation electromagnet is kept alive, the vertical or rolling spring constant of the levitation electromagnet and the spring of the elastic member of the safety wheel act in parallel. Due to the large load shifts and fluctuations that occur when passengers get on and off the vehicle, it is possible to suppress the shaking of the vehicle body.

In addition, if the safety wheels are replaced with something like a sled, it is also possible to function as a parking brake.

Figure 3 shows a modification of Figure 1 with levitation guide rails 6, 7, 8.
．． An example is shown in which 9 is separated into left and right sides, but they are basically the same.

Figure 4 shows an example of a fail-safe structure in which the safety wheels operate by releasing fluid pressure, whereas Figures 1 to 3 show a fail-safe structure in which the safety wheels operate by releasing fluid pressure. It is an explanatory view about the case of pushing down.

In this case, since the spring device does not have to be large enough to support the load of the vehicle body as shown in FIGS. 1 to 3, it can be constructed structurally easily and has other advantages.

[Brief explanation of the drawing]

FIGS. 1 and 2 are block diagrams showing one embodiment of a normal conductive magnetically levitated vehicle according to the present invention, and FIGS. 3 and 4 are block diagrams showing other embodiments of the present invention. 1... Vehicle body, 2, 3... Levitation electromagnet, 4, 5... Guide electromagnet, 6, 7...
・Levitation rail, 8, 9... Guide rail, 10.
... Linear motor primary, 11... Linear motor secondary, 12, 13... Arm, 14, 24.
...Beam, 15, 16...Safety wheel, 17
, 18... Spring, 19, 20, 31. 32・
...Fluid operation device, 22... Digit, 23.
... Pier, 34 ... Solenoid valve, 37 ...
...Fluid pressure source.

Claims (1)

[Scope of Claims] 1. A normal-conducting levitation vehicle equipped with a levitation electromagnet, a guide electromagnet, and a propulsion linear motor on a vehicle body that runs along a rail, and a normal-conducting levitation vehicle that is installed at predetermined intervals on the opposing track. At the left and right ends of the beam, there are floating rails and guide rails, and safety wheels are provided above them to support an elastic member that supports the secondary motor vehicle body load and to roll on the guide rails. When the beam and the above-mentioned levitation electromagnet provided on the side of the car body are energized, an elastic member is pressed to separate the safety wheel from the guide rail, and when de-energized, the elastic rim material is applied to bring the safety wheel into contact with the guide rail. A normal conductive magnetic levitation vehicle characterized by being equipped with a fluid handling device having a mechanism for causing 2. An elastic member provided at the bottom of a beam with safety wheels on the left and right sides, a fluid operating device provided at the top of the beam, and a safety wheel that supports the vehicle body when this fluid operating device has no fluid pressure. A normal conductive magnetically levitated vehicle as claimed in claim 1.