JPH02364Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a vehicle air spring height adjustment device for a bolsterless bogie vehicle.

A conventional air spring height adjustment device consists of a connecting rod for a height adjustment valve fixed to either the car body or the bogie frame, and a mounting seat provided on the car body or the bogie frame to which the adjustment valve is not fixed. The valve actuating shafts are connected by a horizontal link mechanism, and the valve actuating shaft is operated via an actuating lever pivotally connected to the connecting rod.

However, with this configuration, as the number of components attached to the car body and bogie frame increases due to the automation of vehicle equipment, it is necessary to arrange the link mechanism so that it does not come into contact with those components, or to reduce the space for the link mechanism to operate. In addition, the strength against bending moments acting in the vertical direction is weak, and unreasonable force is likely to be applied to the joints at both ends of the connecting rod.

The object of this invention is to provide an air spring height adjustment device for a vehicle that can eliminate the above-mentioned drawbacks.

A first embodiment shown in FIGS. 1 to 4 will be described. In a vehicle air spring height adjustment device for a bolsterless bogie vehicle in which an air spring 3 is provided between a car body 1 and a bogie frame 2, an operating lever 5 and a bending adjustment rod 6 are provided on either the car body 1 or the bogie frame 2.
A height adjustment valve 4 having a valve operating means consisting of a valve actuating means is fixed by a mounting member 7, and a link receiver 8 is provided on the bogie frame 2 or car body 1 to which the height adjustment valve 4 is not fixed, and the bending It is characterized in that the lower end of the adjustment rod 6 and the link receiver 8 are connected by one horizontal link 9.

The actuation lever 5 is arranged horizontally as shown in FIG. 3, and one end is fitted into the valve actuation shaft 10 of the height adjustment valve 4, and the other end is connected to a bending adjustment rod 6 bent in a square shape. It is rotatably connected to a small diameter shaft portion 6a formed at the upper end via spherical universal joints 11, 11'. The adjustment rod 6 has a constant distance from the operating lever 5 in the height direction, and one end is connected to the mounting member 7 of the height adjustment valve 4.
The support arm 15, which is pivotally connected by a pin 14, is rotatably connected to the support arm 15 by another spherical universal joint 12, 12', thereby ensuring smooth movement in the vertical direction. 2
The spherical universal joints 11 and 12 are maintained at a distance in the height direction between the operating lever 5 and the support arm 15 by a hollow tube 16, and are attached to the small diameter shaft portion 6a by a spring washer 17 and a nut 18. In addition, the spherical universal joints 11' and 12' have threaded portions 11'a and 12'a provided at their tips, respectively, connected to the operating lever 5.
and the spring washers 19, 19 and nuts 2 by inserting them into the holes 5a, 15a of the support arm 15.
0,20 actuating lever 5 and supporting arm 1
5.

The horizontal link 9 has one end fixed to the bogie frame 2 and is pivoted between bent pieces 8a and 8a at both ends of the link receiver 8, and the other end is attached to a threaded portion formed at the lower end of the adjustment rod 6. It is mounted horizontally by spherical universal joints 13, 13' attached to spring washers 22, 22 and nuts 23, 23 at 6b. In this case, the length of the horizontal link 9 is determined in the longitudinal direction (arrow A) and the lateral direction of the vehicle body 1 with respect to the bogie frame 2, with reference to the normal position where the vehicle body 1 and the bogie frame 2 are not displaced relative to each other. The maximum allowable displacement amount (arrow B) is determined to be a length that can be absorbed by rotation around the pin 21.

When the valve operating means 5 and 6 are configured as described above, the horizontal portion 6c of the bending adjustment rod 6 can be positioned above the horizontal link 9, so that the horizontal portion 6c is in the same horizontal plane as the horizontal link 9. In some cases (corresponding to the conventional link mechanism), even if there is contact with a component attached to the vehicle body 1 or the bogie frame 2, the contact can be easily eliminated. Therefore, the relative displacement between the car body 1 and the bogie frame 2 in the longitudinal and lateral directions can not only be reliably absorbed by securing a narrow operating space for one horizontal link 9, but also The relative displacement in the height direction between 1 and the bogie frame 2 is compensated for its return to its original normal position in the following manner.

First, the car body load decreases from the set load and the car body 1
When the height adjustment valve 4, which is fixed to the vehicle body 1 by the mounting member 7, also moves upward, the operating lever 5, which had been in a horizontal position, moves upward.
The valve operating shaft 10 is rotated clockwise to operate the height adjustment valve 4, and the compressed air in the air spring 3 is released into the atmosphere to lower the internal pressure and lower the height of the air spring 3. This operation continues until the operating lever 5 returns to its original horizontal state, so that when the vehicle load becomes smaller than the set load, the distance between the vehicle body 1 and the bogie frame 2 returns to the distance corresponding to the set load. automatically adjusted.

Next, the car body load increases more than the set load and the car body 1
When the lever 5 moves downward, the actuating lever 5 rotates the valve actuating shaft 10 counterclockwise in the opposite direction to that described above, and the compressed air source (not shown) is connected to the air spring 3 until the actuating lever 5 is returned to its original horizontal state. The height of the air spring 3 is increased by supplying compressed air from the air spring 3. Therefore, even when the car body load is greater than the set load, the car body 1 and bogie frame 2
The interval is automatically returned to the interval corresponding to the set load.

Incidentally, relative fluctuations in the height direction when the vehicle body load increases or decreases can be controlled by the bending adjustment rod 6, which is rotatably connected to the operating lever 5 and the support arm 15, which form a parallel link. The adjustment rod 6 not only ensures smooth movement in the vertical direction, but also allows relative displacement between the vehicle body 1 and the bogie frame 2 in the longitudinal and lateral directions.
The spherical universal joints 13, 13' that rotatably connect the horizontal link 9 and the horizontal link 9 can absorb undue stress without generating it.

Figure 5 and the following are other embodiments of this invention,
In the adjustment rod 6 of the above embodiment, both ends of the horizontal portion 6c were bent at right angles in opposite directions, but when both ends of the horizontal portion 6'c were bent at right angles in the same direction by different lengths. shows. When the bending adjustment rod 6' is formed in this way, the position of the horizontal portion 6'c of the adjustment rod 6' can be shifted to a position where it does not come into contact with the components attached to the vehicle body 1 or the bogie frame 2. By arranging one horizontal link 9 between the components and securing its operating space, each displacement between the car body 1 and the bogie frame 2 in the longitudinal, lateral, and height directions is automatically controlled according to the set load. The state can be restored.

Therefore, according to the device of this invention, the horizontal portion of the bending adjustment rod formed above or below the horizontal link prevents contact between the bending adjustment rod and each component attached to the car body or bogie frame. It can be easily solved, so just by securing the installation and operation space for one horizontal link,
The air spring height adjustment device can be operated smoothly.

Moreover, the bending adjustment rod has both upper and lower ends connected by spherical universal joints to each tip of a horizontal link that can freely rotate in a plane horizontal to the operating lever, so that the car body and bogie frame can be connected in a three-dimensional manner. Even when the air spring is displaced, the height of the air spring can be adjusted to the height corresponding to the set load by preventing unreasonable force from acting on each joint. Bending moment can be weakened.

Furthermore, if the bending adjustment rod is connected to the tip of the support arm that forms a link parallel to the actuating lever through a spherical universal joint, the reference height of the air spring can be kept constant by the bending adjustment rod held in a vertical position. can be kept.

[Brief explanation of the drawing]

Fig. 1 is a plan view of one embodiment of this invention, Fig. 2 is a front view of the same, Fig. 3 is a side view seen from the - direction of Fig. 2, and Figs. 4 a and b are the upper and lower ends of the adjustment rod. FIG. 5 is a front view showing another embodiment of the invention, and FIG. 6 is a left side view of the same. 1... Vehicle body, 2... Bogie frame, 3... Air spring,
4... Height adjustment valve, 5... Operating lever, 6, 6'
...Bending adjustment rod, 6c, 6'c...Horizontal part,
7...Mounting member, 9...Horizontal link, 10...
Valve operating shaft, 11-13, 11'-13'... (spherical) universal joint, 15... Support arm.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a bolster-less vehicle air spring height adjustment device in which an air spring is provided between the car body and the bogie frame, height adjustment is performed on either the car body or the bogie frame. The valve is fixed, and the operating lever that switches the height adjustment valve is rotatably connected to the valve operating shaft of the height adjustment valve in a vertical plane, and the height adjustment valve is not attached to the bogie frame or car body. A horizontal link that can rotate in a horizontal plane is attached, and a bending adjustment rod having a horizontal portion has both upper and lower ends connected to the operating lever and the horizontal link via a spherical universal joint. Vehicle air spring height adjustment device. (2) When the height adjustment valve is fixed to the vehicle body, the bending adjustment rod is rotatably connected to the support arm that is pivotally connected to the height adjustment valve mounting member at the lower side than the attachment point to the operating lever. An air spring height adjustment device for a vehicle according to claim 1 of the utility model registration claim. (3) The air spring height adjustment device for a vehicle according to claim 2, wherein both ends of the horizontal portion of the bending adjustment rod are bent at right angles in opposite directions. (4) The air spring height adjustment device for a vehicle according to claim 2, wherein both ends of the horizontal portion of the bending adjustment rod are bent at right angles by different lengths in the same direction.