JPH06247300A - Shaft box supporting device of rolling stock - Google Patents

Abstract

PURPOSE:To provide a shaft box supporting device of rolling stock which has an anti-rolling mechanism. CONSTITUTION:A shaft box supporting device of shaft beam type is provided each railroad car, wherein an anti-rolling mechanism is formed by coupling the ends of the shaft beam 7 stretching parallel with the rail toward the center of the truck frame side beam 2 using a twisting rod 8 and supporting the rod 8 on the side beam through a rubber bushing. Thereby the shaft spring can be softened without lowering the rolling stiffness of the body for the bogie, so that the comfortableness both for vertical motions and the rolling of the car can be enhanced simultaneously.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axle box support device for a railway vehicle having an anti-rolling mechanism.

[0002]

2. Description of the Related Art In order for a railway vehicle to travel at high speed and safely,
It is necessary to keep the wheels parallel to each other and follow them accurately in response to changing route conditions. For this reason, the movement of the axle box that houses the bearings that support the wheel axle at both ends is reliably suppressed in the front-rear direction, there is a margin to relieve lateral pressure in the left-right direction, and a spring system is provided in the up-down direction. It must be constructed so as to be buffered through and is supported by various axle box support devices.

One of the axle box supporting devices is an axial beam method. As shown in FIG. 7, one end is attached to a shaft box 5 containing bearings supporting both ends of a wheel set 3 having a pair of wheels 4 and is parallel to the rail and is located on the side beam center side of the bogie frame. The tip end of the shaft beam 11 extending to the side beam 2 of the bogie frame is supported by a support pin 12 via a rubber bush, and
Reference numeral 1 is configured to have appropriate elasticity in the vertical, horizontal, and front-back directions with respect to the bogie frame.

[0004]

In the bogie of the railcar having the above-mentioned conventional shaft-beam type shaft box supporting device, if the shaft spring is softened in order to improve the insulation of the vertical vibration, it is against the vertical vibration. The vibration insulation improves and the riding comfort improves, but on the other hand, the rolling rigidity of the axial spring part decreases and the vehicle sways to the left and right, so-called rolling increases,
The riding comfort deteriorates. Due to the contradictory vibration characteristics, it has not been possible to improve the riding comfort in both the vertical direction and the rolling at the same time with the shaft spring of the conventional bogie.

The present invention, except for the drawbacks found in the bogie of the railway vehicle having the above-mentioned conventional axle beam type axle box supporting device,
(EN) Provided is an axle box supporting device for a railway vehicle, which can improve riding comfort in both the vertical direction and rolling at the same time.

[0006]

In order to achieve the above object, the present invention relates to a shaft box type supporting device for a railcar vehicle, in which one end is attached to each of the left and right shaft boxes and the bogie is parallel to the rails. An end portion of an axial beam extending toward the center of the side beam of the frame is connected by a torsion bar, and the torsion bar is supported by the side beam of the bogie frame via a rubber bush to provide an anti-rolling mechanism.

[0007]

Since the left and right shaft beams are fixedly attached to both ends of the torsion bar, when the vehicle body and the bogie roll, the left and right shaft beams 7 rotate in opposite directions as shown in FIG. 3A. By the movement, the torsion bar 8 is twisted, a spring force is generated, and a restoring moment acts on the shaft beam 7. This restoring moment limits the rolling and improves the riding comfort for the rolling.

When the vehicle body and the bogie vibrate vertically, as shown in FIG. 3B, the left and right shaft beams 7 rotate in the same direction, and the torsion bar 8 does not twist. Has no restoring moment. Therefore, since only the soft axial spring has rigidity in the vertical direction, the vertical vibration can be reduced, and the riding comfort against the vertical vibration is improved.

[0009]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a main part of a bogie having an axle box supporting device according to an embodiment of the present invention, and FIG. 2 is a plan view showing a left half part thereof. One end is attached to each of left and right axle boxes 5 containing bearings that support both ends of an axle 3 having a pair of wheels 4, and the axle beam extends in parallel to the rail and toward the center of the side beam 2 of the bogie frame 1. The ends of 7 are connected by a torsion bar 8 and the torsion bar 8
Is supported on the side beam 2 of the bogie frame via a rubber bush to provide an anti-rolling mechanism. Support part 1 for the side beam 2
As shown in FIG. 6, the reference numeral 0 indicates that the torsion bar 8 is fitted to the inner cylinder of the support member in which the rubber bush 9 is fitted between the inner and outer cylinders, and the outer cylinder side is fitted to the side beam 2. In addition, 6 is a shaft spring.

FIG. 4 is a modification of the case shown in FIG.
Are located outside the shaft beam 7 and support portions 1 are provided at both ends of the torsion bar 8.
This is the case where 0 is provided.

Unlike the above embodiment, FIG. 5 shows the support to the side beam 2 when the axle box 5 is provided inside the wheel 4, and in this case, as in FIG. Supports 10 are provided at both ends of the torsion bar 8.

[0012]

According to the present invention, since the shaft spring can be softened without lowering the rolling rigidity of the vehicle body with respect to the carriage, the riding comfort in both the vertical direction and rolling of the vehicle can be improved at the same time.

[Brief description of drawings]

FIG. 1 is a front view showing a main part of a bogie for a railway vehicle having an axle box supporting device of the present invention.

FIG. 2 is a plan view of the left wheel axle and the axle box supporting device portion thereof in FIG.

FIG. 3 is an explanatory view showing the movement of the shaft beam having the torsion bar according to the embodiment of the present invention, in which A is the movement at the time of rolling,
B shows the movement at the time of vertical vibration.

FIG. 4 is an explanatory diagram in a case where the side beam supporting portions are provided at both ends of the torsion bar in a modification of the embodiment shown in FIG.

FIG. 5 is an explanatory view showing an example in which the axle box of the wheel axle is inside the wheel.

FIG. 6 is an enlarged explanatory view showing a cross section of details of a support portion of the torsion bar to the side beam according to the embodiment of the present invention.

FIG. 7 is an explanatory diagram of a conventional axle beam type axle box supporting device.

[Explanation of symbols]

 1 Bogie frame 2 Side beam 3 Wheel axle 4 Wheel 5 Axle box 6 Axial spring 7 Axial beam 8 Torsional rod 9 Rubber bush 10 Support part 11 Axial beam 12 Support pin

Claims (1)

[Claims] 1. In an axle box supporting device of an axle beam type for a railway vehicle, one end is attached to each of the left and right axle boxes, and an end portion of an axle beam extending parallel to a rail toward a center side beam of a bogie frame is provided. An axle box support device for a railway vehicle, characterized in that it is connected by a torsion bar, the torsion bar is supported by a side beam of a bogie frame via a rubber bush, and has an anti-rolling mechanism.