JP2743766B2 - Air spring height adjustment device for bogies for railway vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an air spring height adjusting device for a bogie for a railway vehicle having an air spring.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show an example of a conventional air spring height adjusting device for a bogie for a railway vehicle having an air spring. The bogie frame 2 is rotatable with respect to the vehicle body 1 via an air spring 3, and the air spring 3 has a spring action in the vertical and horizontal directions.
The air spring height adjusting device joins a lever 5 of a height adjusting valve 4 attached to the vehicle body 1 to a top end of a length-adjustable connecting rod 15 via a roll joint 17 so as to be vertically bendable. The lower end of the connecting rod 15 is joined to a mounting member 16 attached to the bogie frame 2 via a roll joint 18.

When the load on the vehicle body 1 fluctuates, the lever 5 is displaced up and down about the roll joint 17. The height adjustment valve 4 has a dead zone in the vertical direction, and when a vertical displacement exceeding this range occurs during traveling, the height adjustment valve 4 supplies air to the air spring 3 so as to keep the body height constant. It is configured to supply and exhaust air.

In addition, when the vehicle 1 and the bogie frame 2 are displaced relative to each other in the left-right and front-rear directions and when bogies occur, the connecting rod 15 falls down around the roll joint 17, so that the height in the vertical direction is other than the change in load on the vehicle body. Therefore, it is necessary to lengthen the connecting rod 15 so as not to exceed the dead zone.

[0005] In order to correspond to a truck having a current collecting beam, the connecting rod and the seat interfere with the current collecting beam. For this reason,
Either the connecting rod should be made extremely long to avoid the current collector beam, or it should be shortened. When lengthening the connecting rod, bend the connecting rod away from the collector beam,
In addition, the seat must be bent. Further, when the connecting rod is shortened, there is no space problem, but the structure becomes easy to exceed the dead zone of the height adjusting device.

[0006]

As described above, the connecting rod link mechanism of the conventional air spring height adjusting device requires a long connecting rod and a sufficient space. Further, when the connecting rod is shortened, the link mechanism is liable to be affected by the displacement in the front-rear direction, the left-right direction, and the bogie direction when the vertical displacement is performed.

[0007] The present invention, except for the above-mentioned problems of the conventional air spring height adjusting device, accommodates the air spring height adjusting device in a small space, and provides relative displacement between the vehicle body and the bogie in the front-back, left-right and bogie directions. The present invention provides an air spring height adjusting device for a bogie for a railway vehicle having a connecting rod link mechanism that does not affect the displacement in the vertical direction.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, an air spring height adjusting device for a bogie for a railway vehicle according to the present invention is capable of adjusting a lever and a length of a height adjusting valve attached to a vehicle body. across links equal length between the supporting arm and the one end of the connecting rod which is connected in a freely bent in all directions through the ball joint, provided at both ends with mounting seat which is attached to the bogie frame of Chuo link member formed by bent freely connected by members connecting rod link machine
Connect the other end of the connecting rod to the center of the center link member
Bendable in all directions through the
You.

[0009]

The lever 5 attached to the height adjusting valve 4 moves in the horizontal direction during the longitudinal displacement between the vehicle body and the bogie, and the connecting rod 6 follows the spherical bush of the ball joint 10 accordingly. go. At this time, the link rods 8 and 9 on the bogie side draw an upward circular arc locus and the other a downward circular arc locus about the pins of the support arms 13 and 14 of the mounting seat 12 as fulcrums, so that the connecting rod 6 and the center link are linked. The link part by the ball joint 11 with the member 7 is raised, and the connecting rod 6
Approximately compensates for a decrease in height in the vertical direction due to falling of

At the time of lateral displacement between the vehicle body and the bogie, the lever 5 attached to the height adjustment valve 4 moves according to the angle, and is further attached to the lever 5 via the spherical bush of the ball joint 10. The connecting rod 6 falls down in the left-right displacement direction about the link portion of the center link member 7 formed by the ball joint 11 as a fulcrum. Since the lateral displacement is reduced to the cosine component of the mounting angle, the amount of decrease in the vertical height is smaller than when the conventional type is applied to the same space.

When a bogie is displaced between the vehicle body and the bogie, the lever 5 of the height adjusting valve 4 attached to the vehicle body moves the connecting rod 6 in the rotating direction via the spherical bush of the ball joint 10. Along with this, one end of the bogie-side link members 8, 9 draws an arc locus downward in the rotation direction side with the pins of the support arms 13, 14 of the mounting seat 12 as a fulcrum, and the other draws an arc locus upward. The link portion of the center link member 7 formed by the ball joint 11 is raised to compensate for the fall on the attachment line. Also, when it is deviated from the mounting line, the ball joint 1 of the connecting rod 6 and the center link member 7
1 can be followed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view of an air spring height adjusting device according to an embodiment of the present invention, and FIG. 2 is a plan view thereof. In this embodiment, the height adjusting valve 4 is mounted on the vehicle body 1 side, and the lever 5 is connected to the upper end of a height-adjustable connecting rod 6 via a ball joint 10 so as to be freely bendable in all directions. On the other hand, the lower end of the connecting rod 6 is connected to the center of the central link member 7 of the connecting rod link mechanism via a ball joint 11 so as to be freely bendable in all directions, and is attached to both ends of the central link member 7 and the bogie frame 2. The support arms 13 and 14 (having the same height of the mounting portion) provided at both ends of the mounting seat 12 are connected to each other via link members 8 and 9 of equal length to bend freely by a pin joint.

With the above construction, the lever 5 attached to the height adjusting valve 4 moves in the horizontal direction when the vehicle body and the bogie are moved back and forth, and the height is adjusted when the vehicle body and the bogie are displaced from side to side. When the lever 5 attached to the valve 4 moves according to the angle, the lever 5 attached to the height adjustment valve 4 moves the connecting rod 6 in the rotation direction when the bogie is further displaced between the vehicle body and the bogie. As a result, the ball joint 11 between the connecting rod 6 and the link member 7 is formed.
To compensate for the decrease in height in the vertical direction due to the displacement of the connecting rod 6, even if the relative displacement (left / right, front / rear, bogie) between the car body and the bogie occurs, affects the vertical displacement. Never give.

Table 1 shows a comparison of the amount of vertical movement of the connecting rod link mechanism between the embodiment of the present invention and the conventional air spring height adjusting device. In this case, the length of the link members at both ends of the connecting rod link mechanism is 160 mm, the length of the center link member is 250 mm, and the angle of inclination formed by the link members at both ends is 26 degrees. In addition, in each of the vertical fluctuation amounts in Table 1, the movement amount due to the front-back relative displacement between the vehicle body and the bogie is 100 mm, and the movement amount due to the left-right relative displacement is 40 m
m is the vertical fluctuation amount of the intersection between the lever of the height adjustment valve and the connecting rod when the moving angle due to the relative displacement during bogie is 6 degrees.
From the results shown in Table 1, it can be seen that the connecting rod link mechanism of the air spring height adjusting device of the present invention has a smaller amount of variation than a conventional device and can be configured in a small space, and is also excellent in performance.

[0015]

[Table 1]

In the above embodiment, the height adjustment valve is mounted on the vehicle body and the link mounting seat is mounted on the bogie frame. Conversely, the height adjustment valve is mounted on the bogie side and the link mounting seat is mounted on the vehicle body. It can also be attached to

[0017]

The connecting rod link mechanism of the air spring height adjusting device according to the present invention can be constructed in a small space, and has a current collecting beam which constitutes a link mechanism in which the adjusting valve can follow only the load change of the vehicle body. It can also handle trolleys.

[Brief description of the drawings]

FIG. 1 is a front view showing an air spring height adjusting device according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a front view showing a conventional air spring height adjusting device.

FIG. 4 is a plan view of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Bogie frame 3 Air spring 4 Height adjustment valve 5 Lever 6 Connection rod 7 Central link member 8 Both ends link member 9 Both ends link member 10 Ball joint 11 Ball joint 12 Mounting seat 13 Support arm 14 Support arm 15 Connection rod 16 Installation Member 17 Roll joint 18 Roll joint

Claims (1)

(57) [Claims] 1. An air spring height adjusting device for a bogie for a railway vehicle, wherein a lever of a height adjusting valve attached to a vehicle body and one end of a connecting rod capable of adjusting the length are connected via a ball joint.
And coupled in a freely bent in all directions, bendable linked composed connected between both ends link members equal length to both ends and the support arm provided in the mounting seat which is attached to the bogie frame of the central link member Medium Stick
The other end of the connecting rod at the center of the center link member of the link mechanism.
Are flexibly connected in all directions via a ball joint.
Air spring height adjustment device of the cart for railway vehicles comprising Te.