JPS59106360A - Driving truck of linear motor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bogie for a railway vehicle driven by a linear motor, in particular, to make it easier to maintain a constant gap between the linear motor coil and the reaction plate, and to avoid restricting the movement of the wheel axle. Linear motor coil (for on-board primary)
The present invention relates to a near-motor driven bogie in which a reaction plate (in the case of a ground primary vehicle) is attached to the axle so as not to impede running safety especially on curves.

In recent years, so-called small-section subways, in which the cross-sectional area of tunnels is reduced, have been considered in order to reduce the construction costs of subways. In order to realize this small-section subway, it is necessary to develop so-called low-floor vehicles that have a low height from the rail surface to the car body floor. For low-floor vehicle trolleys, it is advantageous to use a linear motor as the drive motor. This is because the height of a linear motor can be made smaller than that of a rotary motor, and therefore the wheel diameter can be made smaller.
Ru.

In such a linear motor driven vehicle, it is important to maintain a constant gap between the linear motor coil and the reaction plate, usually about 10 mm, in order to efficiently utilize the linear motor as a drive source.

Therefore, it is easy to think of attaching a linear motor coil or reaction plate to the axle corresponding to the unsprung part of the bogie.For example, attaching a linear morph secondary conductor (reaction plate) between multiple axles,
A linear motor driven vehicle has been proposed in which idle rotation between this secondary conductor and a primary coil placed on the ground is maintained constant and thrust is directly transmitted to the axle. However, in this method, when passing through a curve, the bogies in the car image are designed to be able to freely change direction, but each wheel axle within the bogie is free to move along the curve. It was not designed to be able to change its direction, and each wheel axle within the bogie was restrained by a secondary conductor, making it impossible to change its direction.

On the other hand, such small-section subways are often used for intra-city passenger transportation, and there are many curves with a small radius of curvature of about 100 m, and when passing through such curves, the wheel axle of the bogie of the above-mentioned known example does not move along the curve. Because the train could not change its direction, there was a risk that the lateral pressure would cause it to derail.

In addition, since a gap is created between the wheel flange and the rail, the wheel flange is greatly worn, requiring frequent wheel grinding, and at the same time, there are problems such as creak noise, which increases passenger discomfort. there were.

SUMMARY OF THE INVENTION An object of the present invention is to provide a linear motor-driven truck that can easily maintain a constant gap between a linear motor coil and a reaction plate and that does not cause the above-mentioned problems when passing through a force curve.

The linear motor-driven truck of the present invention has a linear motor coil (in the case of an on-board primary system) or a reaction plate (
(in the case of a one-day above-ground system) is suspended by a link device provided on the axle.

FIG. 1 shows a front view of an example of an on-vehicle primary type linear motor-driven trolley as an embodiment of the present invention, and FIG.
A-Z view of the figure is shown.

In the figure, 1 is the track bed, 2 is the rail, 3 is the wheel, and 4 is the axle that connects the left and right wheels. 5 is a bearing box which houses an axle support bearing. 6 is a bogie frame, 7 is a car body, and an axle spring 8 is installed between the bearing box 5 and the bogie frame 6.
A pillow spring 9 is attached between the bogie frame 6 and the vehicle body 70. The figure shows an example of using an air splash as a pillow splash. The above configuration is similar to that of a normal two-degree-of-freedom vehicle.

Next, the relationship between linear motors will be explained.

10 is a linear motor coil, and 11 is a reaction plate attached to face the linear motor coil 0, which is preferably made by blast-welding a sia aluminum plate to a steel plate. A traction force or braking force (force in the direction of vehicle movement) is generated between the linear motor coil 10 and the reaction plate 11, thereby accelerating or decelerating the vehicle.

At the same time, an attractive force (force in the vertical direction) is generated between the linear motor coil 10 and the reaction plate 11.

This suction force is harmful because it serves to increase running resistance.

Both the traction force or braking force and the attraction force become larger as the gap δ between the linear motor coil 10 and the rear axle control plate 110 becomes smaller. However, since the increase in traction force or braking force is greater than the increase in running resistance due to the increase in suction force, it is better to make the gap δ as small as possible to efficiently convert the near motor input into traction force or braking force. Available and desirable. By the way, if the gap δ is made too small, the linear motor coil 10 and the reaction plate 11 may come into contact with each other during running due to uneven heights of the upper surfaces of the rail 2 and the reaction plate 11, differences in wheel diameter, etc. There is a risk of damaging the motor coil 10, etc. Therefore, the gap δ is usually selected to be about 10 m, and it is necessary to keep the polarity constant in the order of about 10.

The linear motor coil 10 is a ring device! 2 to the axle 4. The link device 12 is provided at two locations on each axle.

13 is a tension υ device, and one end is connected to the linear motor coil 1.
0 and the other end is connected to the bogie frame 6 via pins. The traction force or braking force is transmitted to the bogie frame 6 by the tension device 13, and the traction force or braking force is further transmitted to the vehicle body by a tension device (not shown) provided between the bogie frame 6 and the vehicle body 7. Reference numeral 14 denotes a horizontal support device, which is connected to the linear motor coil 10 at one end and to the truck frame 6 at the other end via a pin in the left and right direction. The horizontal support device beam functions to suppress the swinging of the near motor coil 10 in the left-right direction.

FIG. 3 shows details of the link device 12, and is a view taken along line B-8' in FIG. In the figure, reference numeral 15 denotes a link device bearing box, which houses the bearings attached to the axle 4. This bearing is preferably a spherical roller bearing, but may also be a cylindrical roller bearing. 16 is a link bolt, and the link bolt 16
The nut 20° 2 is inserted through a donut-shaped vibration-proof rubber 19, a washer 17 having a concave concave, and a washer 18 that fits into the concave concave and can be moved in each direction.
0' to the linkage bearing box 15. A spherical pushbutton 21 is attached to the end of the link bolt 16 on the near motor coil 10 side.

The schematic structure of one embodiment of the linear motor-driven cart of the present invention is as described above. In this embodiment, since the linear motor coil 10 is connected to the axle 4 by the link device 12 as described above, the gap δ does not vary due to vertical vibrations of the bogie frame and the vehicle body. In addition, due to the left and right displacement of the wheel axle, the diameters of the left and right wheels at the point of contact with the rail become different, so that the gap δ is close to the center line t, -t' of the linear motor coil (Fig. 2). reference)
As a result, the attraction force is asymmetrical, and a moment about the center line t-t' is generated in the linear motor coil 10. This moment is received by the link device 12, and the linear motor coil 100 is applied to the axle. Rolling can be suppressed. Therefore, it is possible to prevent the linear motor coil 10 and the reaction plate 11 from coming into contact with each other due to rolling. Next, if the diameter of the part of the wheel 3 that comes into contact with the rail becomes smaller due to wear or grinding, the gap δ can be easily adjusted to a predetermined value by adjusting the 20.20' of the link device 12. can be adjusted to

Next, let's consider the case of passing through a curve.The treads that come into contact with the left and right wheel rails have a slope.
In addition, if the support rigidity in the longitudinal direction (vehicle traveling direction) between the axle box 5 and the bogie frame 6 (the lateral rigidity of the axle spring 8 in the example of FIG. It is possible to change the direction along the curve while causing a side shift p1 and yawing (rotational angular displacement around the vertical axis), and to smoothly pass through the curve. Since the direction of the curve is 34 at each axis position, such displacement becomes one different axis for each axis. In the known example described in 1￥lJ, each wheel axle in the bogie is restrained by a secondary conductor (reaction plate).However, the direction of each wheel axle cannot be changed along a curve. If the linear motor coil is suspended on the axle by a link device as in the embodiment, the linear motor coil does not restrict the left-right displacement and yawing of each wheel axle, so it can smoothly pass through curves.

Next, if there is a leveling error in the rail (discrepancy in the height of the left and right V-ru surfaces) and the leveling error at each axis position is different, there is a forced displacement that twists the rail near motor coil by 1°. Although it acts on the near mortar coil 1°, it can be absorbed by the vibration isolating comb 18 of the link device 12, preventing wheel unloading (a phenomenon in which the wheel lifts off the rail) and preventing the risk of derailment. .

As detailed above, according to the embodiment of the present invention, the gap δ between the linear motor coil 10 and the reaction plate 11 is easily kept constant, so that the linear motor can be operated efficiently. Since the linear motor device is installed so as not to restrict the movement of the wheel axle as much as possible,
In particular, it is possible to provide a linear motor-driven trolley having features such as not impeding running safety on curves.

Although an example has been shown above in which the beam near motor coil is suspended at two locations on each axle, this is not necessarily necessary; for example, in the case of a two-axle bogie like this embodiment, one shaft is suspended at one location in the center of the axle. You can also use it as Because 9 per axis
This is because the rotational moment of rolling can be absorbed by the link devices provided at two locations. When the linear motor coil 10 is suspended at three locations in this way, the variation in the air gap δ increases slightly compared to when it is suspended at four locations.
The ability to follow the twist of the rail is good.

FIG. 4 shows a plan view of another embodiment, and the difference from FIG. 2 is that the link device 12 of one side of the shaft is located at one location in the center of the axle, and the lateral support 14 is placed at one location. The reason for this is that a lateral steady rest device was provided instead. The added steady rest device will be explained below. In FIG. 4, reference numeral 22 and 24 are fixed to the reed and linear motor coil 10 with a steady rest spring support, and have a large □ hole through which the axle 4 is passed and in anticipation of displacement due to vibrations and other factors. A resting spring 23.25 is installed between the resting spring support 22, 24 and the bearing box 15 of the link device 12.

The bearing box 15 of the link device 12 is positioned in the left-right direction with respect to the axle via the thrust force support mechanism of the bearing of the link device 12. Therefore, the vibration of the linear motor coil 10 in the left-right direction with respect to the axle is suppressed by the vibration damping springs 23 and 25. According to the embodiment of FIG. 4, the horizontal support 14 can be omitted, and the same effect as that of the embodiment of FIG. 2 is obtained.

Further, the link device 12 described in the above embodiments is not limited to the embodiment shown in FIG. 3, and various modifications are possible. FIG. 5 shows an example of this, in which a link 27 having spherical bushings at both ends is inserted between the link bolt 16' and the near motor coil 100, and a rubber bushing 26 is attached to the vibration-proof rubber 190. The installation is used in the section. Link 27 with spherical bushings at both ends
Therefore, the horizontal displacement and yawing angle displacement of the υ axle 4 are not restricted. When the linear mork coil 10 is suspended at three locations as shown in FIG. 4, the ability of the wheel axle to follow torsional deformation of the track is not hindered even if the rubber bushing 26 is not used. Adjustment of the air gap δ when the wheels are worn is done using the Nara 1-2 as in the embodiment shown in Fig. 3.
This can be done by adjusting the support seat 2 by 0.20'.
Adjustments can also be made by inserting a liner between 8 and the linear motor coil 10. In addition, the vertical force acting between the linear motor coil 10 and the rear axis congratulation plate 110 has a large attraction force and a small repulsion force, so the link 2
It is also possible to use chains instead of 70s.

In short, the link device used in the bogie of the present invention does not restrict the relative displacement between the axle 4 and the linear motor coil 10 in the horizontal direction and yawing as much as possible, but restricts the relative displacement in the direction in which the two move away from each other in the vertical direction. If it's something like that, you can expect the same effect as habo.

The steady rest structure of the linear motor rotor 10 shown in Fig. 4 is as follows:
For example, the anti-dig spring 23 is not limited to the one shown in FIG.
．． 25 may be made of anti-vibration rubber.

The above explanation is based on the on-vehicle primary system, but the on-board primary system is
In the case of long-term system, the linear motor coil is installed on the ground,
It is sufficient to attach the reaction plate to the position of the linear motor coil in this embodiment.

As detailed above, according to the present invention, it is possible to provide a near-motor-driven bogie with excellent running safety, and it is possible to provide a low-floor vehicle suitable for small-section underground railways.

[Brief explanation of drawings]

FIG. 1 is a schematic front view of one embodiment of the present invention, and FIG. 2 is a schematic front view of one embodiment of the present invention.
A-A' view of the figure, Figure 3 is a BS/view of Figure 2, and Figure 4 is a BS/view of Figure 2.
This figure is a plan view of another embodiment of the present invention, and FIG. 5 is a schematic diagram of another embodiment of the link device used in the present invention. 1... Roadbed, 2... Rail, 3... Wheels, 4...
・Axle, 6... Bogie frame, 7... Vehicle body, 1o... Linear motor coil, 11... Reaction plate,
12...Link device. Erase 1 Prisoner 2 Eyell'

Claims (1)

[Claims] 1. A bogie equipped with at least two axles connecting wheels running on a rail is provided, and when this bogie is provided with a reaction plate on the track bed side, a near motor coil,
When a linear motor coil is provided on the trackbed side, a reaction plate is provided, and the linear motor coil and reaction plate generate driving force to drive the bogie, or in a near motor drive bogie, a reaction plate is provided. 1. A driving truck for a linear motor, characterized in that a linear motor coil or a reaction plate is suspended on a rear axle by a link device.