JPH02222B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bogie for a railway vehicle that is particularly suitable for high-speed running on curves by improving an axle box support device.

In general, railway vehicles are required to have good riding comfort and high running safety, and for this reason, it is necessary to suppress the meandering motion. One effective method for this is to support the wheel axle with appropriate elasticity in the longitudinal and lateral directions with respect to the bogie frame. That is, the first
As shown in FIGS. 1 to 3, an axle 2 fixed to a wheel 1 is supported by an axle box 4 via a bearing 3, and the axle box 4 supports a bogie frame side beam 6 via an axle spring 5. In the bogie structure provided as shown in FIG. 3, details of the axle box support device are shown in FIG.
Inner cylinders 7 fixed to the axle box 4 are provided at the front and rear of the axle box 4, and a buffer body 9 is provided between an outer cylinder 8 formed to enclose the inner cylinder 7. The structure is such that the cylindrical guide surface 10 absorbs the vertical relative displacement between the two. In the axle box support structure configured in this manner, the shock absorber 9 provides elasticity in the front and rear and left and right directions, so if the constants are optimized, snaking behavior can be suppressed.

On the other hand, in the conventional structure described above, since the rigidity in the longitudinal direction is large, lateral pressure increases when passing through a curve, and there is a risk of derailment when traveling at high speed on a curve. Another drawback was that a so-called "squeak" noise was produced due to contact between the wheel flange and the rail. Incidentally, if the elasticity of the shock absorber 9 is reduced in order to improve the curve passing performance, snaking becomes more likely to occur, and therefore, there is a drawback that measures to reduce lateral force and measures to prevent snaking are opposite to each other.

In addition, the Chevron rubber axle box support system and the pedestal type axle box support system, in which cushioning rubber is interposed between both sides of the axle box and support arms provided on the side beams of the bogie frame, are well known. The rigidity in the longitudinal direction is extremely high, so it is difficult to say that it is the optimal method for reducing lateral pressure.

The purpose of the present invention is to improve safety during high-speed running on curves by improving the curve passing performance of the wheel set and suppressing snaking behavior, and to suppress deviation of the bogie and car body with respect to the track. An object of the present invention is to provide a bogie for a railway vehicle that can perform the following tasks.

The present invention includes a bogie frame, a longitudinal and lateral force transmitting means installed between the bogie frame and the vehicle body, and transmitting longitudinal and lateral force between the bogie frame and the vehicle body, and an axle box support means provided at both ends of the axle to elastically support the bogie frame and allow the axle to swing in a horizontal plane;
a bearing that allows the axle to swing and restricts side-to-side movement;
The bearing is characterized by comprising a link mechanism that connects the bearing to the bogie frame so that it can move up and down at two locations on the bogie frame.

An embodiment of the present invention will be described below with reference to FIGS. 4 to 6.

In the figure, a bearing box 12 is provided at the center of the front and rear axles 2 via a rotatable bearing (spherical bearing) 11, and the bearing box 12 and the bogie frame horizontal beam 13 are fastened together by a link mechanism. That is, link 14,
15 with the connecting rod 16, and the links 14, 15
One end is fastened to the bearing box 12 via a buffer body 17, and the other end is fastened to the bogie frame cross beam 13 via a buffer body 17'. This is a structure in which acting forces in the longitudinal and lateral directions between the bogie frame and the axle 2 are transmitted by the link mechanism.

Reference numeral 1 denotes a wheel attached to the axle 2, and an axle box 4 is provided on the outside of the wheel, that is, at the end of the axle 2 via a bearing 3. The axle box 4 has a cushioning rubber 1
8, supports the side beam 6 of the bogie frame via the shaft spring 5 and the shaft spring seat 19. Note that the side beams 6 on both sides are connected by a horizontal beam 13, and together constitute a bogie frame. 20 is an air spring receiver for receiving the air spring 21;
The vehicle body 22 is supported with respect to the bogie frame via. A thrust rod 23 has one end attached to the horizontal beam 13, and the other end is connected to a center pin 24 attached to the lower surface of the car body 22, and is used to transmit longitudinal force from the bogie frame to the car body 22. be. In addition,
The propulsion rod 23 and center pin 24 are
It is a means of transmitting left and right force. Further, the movement of the vehicle body 22 in the left-right direction and the left-right force are transmitted by a stopper metal fitting 25 attached to the lower surface of the vehicle body 22 and a stopper rubber 26 provided on the bogie frame in correspondence with the stopper metal fitting 25.

In such a configuration, the axle spring 5 can be set to be soft in the horizontal direction, and the acting force in the longitudinal and lateral directions of the wheel axle is transmitted to the bogie frame by the link mechanism without going through the axle box support device, and the axle 2 is attached to the bogie frame. Bearing 1 against
Since the axle 2 is swingably mounted on the vehicle body 22, the axle 2 can swing in the longitudinal direction of the vehicle body 22 due to the self-steering effect due to the slope of the tread surface of the wheels 1 when traveling on a curved track. Therefore, the lateral pressure applied to the wheels 1 is equalized between the front and rear wheels 1, and the lateral pressure applied to the front wheels 1 can be reduced.
This makes it possible to reduce wear on the wheels 1 and rails, and also to reduce squeak noise.

It can also run at high speed on curved tracks with a small radius.

Further, since the axle 2 is connected to the bogie frame through a link mechanism, a bearing 11, and a bearing box 12 so as to be able to transmit longitudinal force and lateral force, deviation of the bogie frame and the vehicle body with respect to the track is prevented. be able to. This is advantageous in maximizing the width of the vehicle body within vehicle limits.

As explained above, according to the present invention, it is possible to improve the curve passage performance of the wheel set and suppress the snaking behavior, thereby improving safety during high-speed running on curves, and improving the bogie and vehicle body. This is advantageous in increasing the width of the vehicle body.

[Brief explanation of drawings]

Figure 1 is a plan view of a conventional railway vehicle bogie;
1 is a side view of FIG. 1, FIG. 3 is a detailed view of the axle box support device of FIG. 4 is a side view, and FIG. 6 is a detailed view of the axle box support device of FIG. 4. 2... Axle, 4... Axle box, 5... Axle spring, 6... Side beam, 11... Bearing, 12... Bearing box, 13... Side beam,
14, 15... Link, 18... Buffer rubber, 19... Axial spring seat, 22... Vehicle body, 23... Thrust rod, 24...
Center pin, 26... stopper rubber.

Claims (1)

[Claims] 1. A bogie frame, a longitudinal/lateral force transmitting means installed between the bogie frame and the car body, and transmitting longitudinal and lateral force between the bogie frame and the car body, and a means arranged parallel to the longitudinal position of the bogie frame. an axle, an axle box support means provided at both ends of the axle, elastically supporting the bogie frame and allowing the axle to swing in a horizontal plane;
a bearing installed at the center of each axle in the axial direction to allow rocking of the axle and restrict horizontal movement; and a bearing connected to the bogie frame so as to be movable up and down at two locations on the bogie frame. A bogie for a railway vehicle, characterized in that it is comprised of a link mechanism.