JPS6248443B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a suspension system for a suction type magnetically levitated vehicle.

The suction type magnetic levitation vehicle levitates the vehicle by the attraction force of an electromagnet against the rail, and uses a propulsion means such as a linear motor to travel along the rail while maintaining a levitation gap of approximately 10 mm. It has the property that the gap during levitation is extremely small.

This means that when the traveling body travels at high speeds reaching approximately 70 to 80 m/s, sufficient consideration must be taken to maintain the above-mentioned gap constant. For this reason, an independent suspension system in which electromagnets are attached to a running body via a secondary suspension has been developed (for example, Japanese Patent Publication No. 1983-6406).

That is, a large number of electromagnets attached to a running body are divided into several groups, each of these groups is fixed to an independent module (unit assembly structure), and the module is connected to the running body via a secondary suspension. This is because compared to the so-called fixed suspension system, the mobility of the module independent of the running body is obtained, which improves the ability of each electromagnet to follow the rail, reducing dependence on rail laying accuracy. In addition to the advantage of being able to relatively reduce the ratio (reducing accuracy requirements during installation and maintenance/inspection), it also improves ride comfort because movements such as vibration of the electromagnet that follow the distortion of the rail are not directly transmitted to the running body. This is an advantage that can be obtained.

The present invention provides an independent suspension system using this module, which includes a shock absorber that is interposed between the traveling body and the module to support the weight of the traveling body and cushion the impact, and a thrust transmission device that transmits thrust and braking force. It is intended to provide a suitable configuration, and specifically, as described below, a pair of shock absorbers are provided separately at the front and rear of the module in accordance with the permissible movement and rotation of the module. air spring as
Each of the lower ends is fixed to the module in a non-movable manner, and the upper end is connected to the traveling body via a mounting member having a certain degree of freedom of movement in the left and right direction, and is a component of the module. In order to transmit the thrust and braking force generated by the linear motor and brake to the traveling body, the module extends symmetrically from the front and rear pivot points of the module in an inverted V shape and is attached to the mounting member on the traveling body side. The present invention is characterized in that a thrust transmission device including two thrust links attached to the vehicle is provided, and the attachment member is configured to be able to freely move a fixed length in the left-right direction with respect to the traveling body.

The two thrust links constituting this thrust transmission device are normally arranged so as to form a triangle with isosceles sides in a substantially horizontal plane, thereby allowing vertical movement of the module. By locating the intersection of the link axes above the center line of the rail, yawing caused by the thrust of the linear motor or the braking force of the brake can be suppressed as much as possible.

In addition, the thrust transmission section is constructed by making the two inverted V-shaped links isosceles to form a triangle together with the module, and this triangle is positioned in a plane that is approximately horizontal. This is done in consideration of the fact that the module moves and rotates relative to the traveling body about the y and z axes, and in this case, it is necessary to prevent large stress from being applied to the joint portion. In other words, if the thrust transmission section is configured in the triangular shape described above, in principle, the shape of the triangle (the opening angle of the two thrust links) will not change even during the relative movement, and it will be symmetrical in the front and rear. This is because, since there are two links, the axial force of the links can act primarily as tension in both thrust transmission and braking force transmission. In addition, the upper end of the air spring 11 is moved relative to the traveling body on the y-axis.
By allowing dy to be freely controlled, the following effects are achieved. In other words, this allows the attitude of the air spring (the direction in which the spring force acts) to remain vertical at all times, and therefore the guiding force that controls displacement in the y-axis direction and guides the module to follow the rail is relatively low. In this type of traveling body, which has a weak target, the spring force of the air spring does not interfere with the guiding force at all.

The present invention will be explained in detail below based on the drawings.

In the figure, reference numeral 1 indicates a module having a substantially U-shaped cross section, and its lower arm 2 has four electromagnets 4, 4... fixed in series, and the upper arm 3 has a linear motor 5 fixed to it. There is.

A rail 6 and a reaction plate 7 installed on the ground are located between the upper and lower arms 2 and 3.
The electromagnet 4 attracts and levitates the rail, and the linear motor 5 applies a propulsive force in the rail laying direction. The levitation force and propulsion force applied to the module 1 are transmitted to the traveling body 8 via an independent suspension system, but as mentioned above, this independent suspension system is used for railway vehicles and automobiles due to the special nature of the suction type magnetically levitated traveling body. It is not possible to use known methods such as those found in In other words, in a suction type magnetically levitated vehicle, it is desirable to make the rail cross-sectional area as small as possible in order to reduce the construction cost when it is put into practical use. It is necessary to connect a large number of electromagnets facing the rails without gaps on the traveling body. In this case, these electromagnets 4
Considering the movement of the module 1 that integrates a plurality of modules, when the traveling body 8 is located on a curved track as shown in FIG. compared to the case where the rail 6 is in a straight state, the individual modules 1
must allow displacement of the traveling body 8 in the left-right (lateral) direction and rotational displacement within the water surface.

To summarize this, in addition to the vertical displacement of the rail 6, as shown in FIG. When used as an axis, the module 1 moves dy and y in the y and z axis directions relative to the traveling body 8.
dz, as well as rotations ry and rz about the y and z axes, must be allowed, movement dx in the x-axis direction must be regulated for propulsion transmission, and rotation rx about the x-axis must be allowed. This is not related to the ability to follow the rail 6, but rather needs to be regulated in order to improve riding comfort.

5 to 8 show an example of the configuration of an independent suspension system that satisfies such movement of the module 1,
To explain this simply, link mechanisms 9 ₁ and 9 ₂ connect the front and rear parts of the module 1 to the traveling body 8, respectively.
These link mechanisms 9 ₁ and 9 ₂ are connected by 5 links connected by pin joints.
By forming two parallelograms, the movement dy and dz of the module 1 in the y and z axis directions with respect to the traveling body 8 is
Furthermore, the independent movement of these link mechanisms 9 ₁ and 9 ₂ also allows rotations ry and rz about the y and z axes of the module 1, but the rotation rx about the x axis is restricted. ing.

Further, reference numerals 10 and 10 indicate two thrust links that are provided between the module 1 and the traveling body 8 and constitute a thrust transmission device, and one end of each is pivotally connected to the front and rear of the module 1 by ball-end joints. , and the other end is similarly pivotally connected to a mounting member 14 assembled on the traveling body 8 side by a ball-end joint. As shown in the figure, these two thrust links 10, 10 form a triangle in a substantially horizontal plane, and each pivot point is supported by a spherical joint, so that the two thrust links 10, 10, Although it allows movement dy and dz and two rotations ry and rz, it is restricted in the x-axis direction and has the effect of transmitting propulsive force.

Incidentally, here, since the movement and rotation of the module 1 is restrained by the circular motion of the thrust links 10, 10, for example, the traveling body 8 of the link mechanisms ₉₁ , ₉₂
In practical terms, it is necessary to interpose, for example, hard rubber, at the connection part to the module 1, so as to absorb the slight displacement in the x-axis direction caused by this.

In addition, in correspondence with such a thrust transmission mechanism, air springs 11, which are interposed between the traveling body 8 and the module 1 and are provided as a shock absorbing device to support the weight of the traveling body 8, are spaced apart from each other at the front and rear of the module 1. The air springs 11 are arranged in pairs, and the attachment member 12 of the air spring 11 to the traveling body 8 is configured so that the above-mentioned movement dy in the y-axis direction can be freely performed within a certain length range. . This air spring 1
A configuration that allows one movement dy is realized, for example, by using a sliding mechanism 13 such as a linear bearing as shown in FIGS. 8 and 9. Since the upper end of the air spring 11 is movable in the left-right direction of the traveling body 8 by the mounting member 12, the air spring 11 is always maintained in a position acting perpendicularly to the module. This has the effect that the air spring does not impede the module's ability to follow the rail.

Also, the movement of module 1 in the y and z axis directions dy and dz
Two thrust links 10,
The mounting member 14 to which the air spring 10 is pivotally mounted also needs to be constructed so that it can move in the y-axis direction with respect to the traveling body 8. Therefore, in this example, it is mounted as shown in FIG. 10 in the same way as the air spring 11. Part 1
4 is attached to the traveling body 8 via a sliding mechanism 13.

As described above, the independent suspension system for the attraction type magnetically levitated vehicle according to the present invention has the purpose of improving the ability of the module to which one or more electromagnets are fixed to follow the rail in the y- and z-axis directions described above. Corresponding to the structure that allows movement dy and dz about the axis and rotation ry and rz about the y and z axes, the module is interposed between the module and the running body to support the weight of the running body and has a buffering effect. It is characterized by the arrangement and connection configuration of a shock absorber using an air spring and a thrust transmission device using two thrust links. This shows an extremely useful effect of improving

Although omitted in the above description, it is clear that a shock absorber having a similar arrangement and connection configuration can be provided together with the air suspension.

[Brief explanation of the drawing]

The drawings all show embodiments of the present invention; Fig. 1 is a diagram illustrating an attraction-type magnetically levitated vehicle, Fig. 2 is a longitudinal sectional front view of the same, and Fig. 3 is a diagram illustrating a module that can be freely moved and rotated with respect to the traveling body. Diagram explaining the necessity of degree, 4th
The figure is a diagram explaining the spatial movement of the module, Figure 5 is a plan view showing an example of an independent suspension system, Figure 6 is a side view of the same, Figure 7 is a front view of the same, and Figure 8 is a longitudinal sectional front view of the same. , FIG. 9 is a partially enlarged sectional view showing the air spring, and FIG. 10 is a partially enlarged sectional view illustrating the structure of the thrust transmission device. 1...Module, 2...Lower arm, 3...Upper arm, 4...Electromagnet, 5...Linear motor,
6, 6'... Rail, 7... Reaction plate, 8... Traveling body, 9 ₁ , 9 ₂ ... Link mechanism,
10...Thrust link, 11...Air spring, 12...Mounting member, 13...Sliding mechanism, 14
...Mounted parts.

Claims (1)

[Claims] 1. A large number of modules, each of which is a set of one or more levitation electromagnets combined with brakes, skids, linear motors, etc., are installed on the traveling body, facing each of a pair of left and right rails laid on the ground. The modules are installed continuously, and when the front, rear, left, right, and up and down directions of the traveling body are taken as the x, y, and z axes, respectively, each module has a y-
The module is connected to the traveling body by an independent suspension system to allow movement in the z-axis direction and rotation about the y and z axes, and between the traveling body and the module in the z-axis direction,
In an attraction-type magnetically levitated vehicle in which a pair of air springs that support the weight of the traveling body and act as a buffer are arranged in a pair at the front and rear of the module, the air springs are arranged in the y-axis direction with respect to the traveling body. An independent suspension system for a suction type magnetically levitated vehicle, characterized in that the system is connected to the vehicle via a freely movable mounting member.