JPS60116556A - Controller for revolution of truck for railway rolling stock - 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 [Field of Application of the Invention] The present invention relates to a rotation control device for a bogie for a railway vehicle, and in particular, a system for controlling the rotation of a bogie for a railway vehicle, which is suitable for ensuring good rotation of the bogie when the railway vehicle is running. This invention relates to a rotation control device for a truck.

[Background of the invention]

The bogie portion of a conventional railway vehicle will be explained with reference to FIGS. 1 and 2. FIG. 1 is a side view showing a bogie portion of a railway vehicle, and FIG. 2 is a sectional view taken along line A-A in FIG. In the figure, 1 is a vehicle body, 2 is a pillow spring, and 3 is a pillow beam, and the vehicle body 1 is supported on the pillow beam 3 via the pillow spring 2. A center pin 5 is provided on the lower surface of the center of the pillow beam 3. Reference numeral 4 denotes a truck frame which supports the pillow beam 3 via side supports 6 arranged on both left and right sides, and into which the center pin 5 of the pillow beam 3 is rotatably inserted. 7 is a wheel axle, and 8 is an axle spring, and the bogie frame 4 is supported by the axle 7 via an axle spring 8.

In such a configuration, the side supports 6 are slidably provided to face the pillow beam 3 and the bogie frame 4, respectively, and transfer the load of the vehicle body 1 transmitted to the pillow beam 3 via the pillow spring 2 to the bogie frame 4. Both are configured to allow rotational movement about the center pin 5 of the bogie relative to the vehicle body l. In addition, with respect to the rotational movement between the pillow beam 3 and the truck frame 4, the frictional force caused by the sliding between the side supports 6 suppresses the meandering motion of the truck.

However, in the above-mentioned configuration, the frictional force between the side supports 6 prevents smooth rotation of one bogie, and lateral pressure acts on the wheels 7, resulting in abnormal wear of the flange portions of the wheels 7. was there.

[Purpose of the invention]

In view of the above points, it is an object of the present invention to reduce the wear of the flange portion of the wheel by reducing the lateral pressure acting on the wheel when the vehicle travels on a curve.

[Summary of the invention]

The present invention provides for a bolster anchor provided between the car body and the bogie frame to be activated by side support rotational resistance caused by relative sliding between the side supports when the vehicle enters a curve while traveling and the bogie rotates in a horizontal plane. Thrust force acts. This thrust force is detected and a rotational displacement control means provided between the pillow beam and the bogie frame is controlled so as to reduce the thrust force, thereby reducing the lateral pressure acting on the wheels due to the side bearing rotational resistance. It is characterized by the fact that it is possible to do so.

[Embodiments of the invention]

Next, an embodiment according to the present invention will be described with reference to FIGS. 3 and 4. In the figures, the same reference numerals as in the conventional example indicate the same members. A bolster anchor 9 is provided between the pillow beam 3 and the vehicle body 1, and the driving force or braking force from the bogie is transmitted to the vehicle body 1 via the pillow beam 3 and the bolster anchor 9. Note that the bolster anchors 9, like the pillow springs 2, are installed on both left and right sides of the vehicle body l. 1
0 is a stress strain meter provided on the bolster anchor 9, which is a small one that detects the thrust force acting on the bolster anchor 9. Reference numeral 11 indicates a compensation circuit, and reference numeral 11 indicates an amplifier, which are connected in series to the stress strain meter 10 to compensate and amplify the detection results thereof. A hydraulic cylinder 14 is a means for controlling the rotational displacement of the bogie provided between the pillow beam 3 and the bogie frame 4, and is used to adjust the rotational force of the pillow beam 3 relative to the bogie frame 4 in a horizontal plane. Reference numeral 13 denotes a servo valve that controls the amount of pressure oil supplied to the hydraulic cylinder 14 from a hydraulic pressure supply source (not shown) according to the output from the amplifier. Note that the aforementioned control circuit and circuit constitute a feedback circuit.

In such a configuration, when the vehicle enters a curve, the bogie frame 4 rotates in a horizontal plane relative to the vehicle body 1. At this time, relative sliding occurs between the respective side supports 6, and a side support frictional force is generated accordingly. Due to this side friction force, a lateral pressure is generated on the wheel 7, and a thrust force is generated on the bolster anchor 9 in opposite directions on both sides of the vehicle body 1. By the way, the difference between the thrust force generated by driving force or braking force and the aforementioned thrust force is that the former acts on the bolster anchors on both sides of the car body 1 in the same direction, whereas the latter acts on the bolster anchors on both sides of the car body 1. These points act in opposite directions. Therefore, the determination is made based on this difference. The thrust force detected by the stress strain meter 10 is compared with a preset anchor thrust force in a compensation circuit, an increase in the thrust force is calculated, and a corresponding command value is output to the amplifier 12. In the amplification, the command value is amplified and output to the servo valve 13,
The servo valve 13 is controlled to supply pressure oil corresponding to the command value to the hydraulic cylinder 14.

The hydraulic cylinder 14 expands and contracts with the supplied pressure oil, and rotates the pillow beam 3 relative to the truck frame 4 in a direction that suppresses the side friction force. Therefore, the thrust force of the bolster anchor 9 can be reduced.

By the way, the control circuit constitutes a feedback circuit, and the pillow beam 3 is activated by the operation of the hydraulic cylinder 14.
The rotational resistance between the carriage frame 4 and the carriage frame 4 can be continuously controlled to be constant.

According to such a configuration, since the rotational resistance of the pillow beam 3 during horizontal rotational motion with respect to the bogie frame 4 can be kept constant, the rotational resistance can be maintained constant at all times, so that the rotational resistance of the pillow beam 3 can be always kept constant.
This can significantly reduce the lateral force caused by

Therefore, wear of the flange on the wheel 7 can be reduced.

Next, FIG. 5 shows another embodiment of the present invention.

In the figures, the same reference numerals as in the previous embodiment indicate the same members. This embodiment differs from the previous embodiment in that:
Pillow spring 2. The arrangement of the pillow beam 3 and side supports 6 is reversed from that of the previous embodiment. Accordingly, the bolster anchor 10 is provided between the pillow beam 3 and the bogie frame 4, and the hydraulic cylinder 14 is provided between the pillow beam 3 and the vehicle body 1.

In such a configuration, the control circuit for the hydraulic cylinder 14 is the same as that in the first embodiment. and,
The thrust force of the bolster anchor 9 is detected by the stress strain meter 10, and the hydraulic cylinder 14 is controlled via each control means based on the detection result. By operating the hydraulic cylinder 14, the rotational resistance due to the friction between the side supports 6 can be kept constant, and wear on the flange portion of the wheel 7 due to the rotation of the truck can be reduced.

Incidentally, in the above embodiment and other embodiments, an example in which a hydraulic cylinder was used as the relative displacement control means was explained, but the present invention is not limited to this. Any device may be used as long as the displacement of the moving parts can be controlled; for example, a pneumatic cylinder or a combination of a rack and a pinion may be used.

〔Effect of the invention〕

As explained above, according to the present invention, the rotational resistance accompanying the rotational movement of the bogie in the horizontal plane can be kept constant at all times, so the lateral pressure on the wheels when traveling on curves can be reduced, and the flange wear of the wheels can be significantly reduced. This can be reduced to

[Brief explanation of the drawing]

FIG. 1 is a side view of a bogie portion of a conventional vehicle. 2 is a sectional view taken along the line A-A in FIG. 1, FIG. 3 is a side view of a bogie portion of a vehicle equipped with an embodiment of the bogie rotation control device according to the present invention, and FIG. 4 is a sectional view taken along the line A-A in FIG. Figure S55, a circuit diagram showing a control circuit of one embodiment of the bogie rotation control device according to the present invention, is a side view of a bogie portion of a vehicle equipped with another embodiment of the bogie rotation control device according to the present invention. 1... Vehicle body, 2... Pillow spring, 3...
- Pillow beam, 4...Bogie frame, 6... Side support, 9... Bolster anchor, 10... Stress strain meter, 11... ... Compensation circuit, Minoru ... Amplifier, 13 ... Servo valve, 14 ... Hydraulic cylinder 11 Fig. 3 Fig. 41

Claims (1)

[Claims] 1. A bogie that supports the vehicle body via side supports, pillow springs, and pillow beams, has a bolster anchor, and is rotatable in a horizontal plane, and a bogie that is attached to the side support between the vehicle body and the bogie. a bogie rotational displacement control means; a thrust detection means for detecting the thrust force of the nq bolster anchors accompanying the rotation of the bogie; and a detection result of the thrust detection means that causes the bogie rotational displacement control means to reduce the thrust force of the bolster anchors. 1. A rotation control device for a bogie for a railway vehicle, comprising a control means for controlling the rotation as follows.