JPH08268276A - Axle box supporter - Google Patents

Abstract

PURPOSE: To reduce any burden being produced in a bearing of an axle box supporter to axled direction force receiving from a rail. CONSTITUTION: A truck frame's gravitational direction is supported on an axle box 1 supporting an axle end via a coil spring, while an axle beam arm 4 supporting the axle box 1 in both rail longitudinal and an axle (7) directions is installed there, and one side axle beam arm 4 is locked to the axle box 1, and a support shaft 14 in parallel with the axle is installed in the other side beam arm 4, supporting it rotatably around this support shaft 14 to the truck frame side, and both ends of this support shaft 14 are attached to the truck frame side via an elastic body bush 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axle box supporting device,
In particular, the present invention relates to a shaft tension type axle box support device used for a bogie for a railway vehicle.

[0002]

2. Description of the Related Art Conventionally, as a shaft tension type shaft box supporting device, as described in JP-A-1-160777, a shaft spring is formed in one of the shaft boxes, and a shaft spring is provided between a shaft box body and a bogie frame. It has been known that the shaft tension and the elastic body are integrally connected to the bogie frame via the shaft and the elastic body, and the torsional rigidity around the traveling direction of the vehicle is shared by the shaft tension and the elastic body. .

[0003]

SUMMARY OF THE INVENTION In the above-mentioned conventional shaft tension type axle box supporting device, the shaft tension is attached to the central portion of the shaft whose both ends are fixed to the bogie frame via a single elastic body. In this type of axle box body, since the bearings inside the axle box body are fixed except for the rotation direction of the axle, the shaft spring end attached via the elastic body is the same as when it is rotationally supported. When the lateral force (force in the axle direction) received from the rail acts on the axle, the bearing portion inside the axle box bears the moment force, and the burden becomes large. was there.

Further, since the shaft tension is integrally formed between the shaft box body and the mounting portion via the elastic body, it is impossible to adjust the position of the shaft box in the front-rear direction, and the shaft distance pair The corner dimensions could not be adjusted accurately.

An object of the present invention is to provide an axle box supporting device capable of reducing the load on the bearing against the lateral force received from the rail.

[0006]

SUMMARY OF THE INVENTION The above-mentioned object is to support an axle box supporting an axle end in a gravity direction of a bogie frame via a coil spring, and an axle supporting the axle box in a rail longitudinal direction and an axle direction. A support arm is provided, one of the support shaft arms is fixed to the support box body, and a support shaft parallel to the axle is provided on the other support shaft to support the carriage frame side so that it can rotate around the support shaft and support it. This is achieved by mounting the shafts on both sides of the bogie frame via elastic bushes.

[0007]

[Operation] A support shaft parallel to the axle is provided on the other side of the shaft tension arm,
By attaching both ends of the support shaft to the bogie frame side via elastic bushes, the same state as when both ends of the support shaft supported via the elastic bush is fixed and supported, When the left-right force from the rail (force in the axle direction) acts, the moment force is also shared by both ends of the support shaft, reducing the moment force applied to the bearing inside the shaft box body, and the bearing inside the shaft box body. The burden on the department is reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the axle box supporting device of the present invention will be described below with reference to FIGS. 1 is a plan sectional view of the axle box portion, FIG. 2 is a side view of the axle box portion, and FIG. 3 is A of FIG.
FIG. 4 is a cross-sectional view taken along line A, and FIG. 4 is a plan view of the entire bogie. As shown in FIGS. 1 and 2, the configuration of the shaft-reliable type axle box support device of the present embodiment is such that the coil spring 3 is provided directly above the axle box body 1 attached to both ends of the axles 7 positioned in front of and behind the bogie. Is mounted to support the bogie frame 2 on the coil spring 3, and the tip of the shaft tension arm 4 that is integrally formed with the shaft box body 1 and extends toward the center of the bogie is provided with an elastic bush, in this case a rubber bush 5. It is configured to be attached to the bogie frame 2 via the above. The rubber bushes 5 are provided on both of the support shafts 14 at the ends of the shaft tension arm 4 as shown in FIGS. That is, the rubber bushes are provided separately on the right and left sides of the support shaft 14. Further, in this case, the shaft tension arm 4 is divided and the horizontal fastening surface is bolted.

In such a structure, when a lateral force 9 (force in the axle direction) from the rail is applied to the wheels 6 during traveling, this force is applied from the wheels 6 to the axle 7, the axle box 1, It is transmitted to the bearing 8, the shaft tension arm 4, the support shaft 14, the rubber bush 5, and the bogie frame 2 in order. Then, the reaction force 10 from the rail with respect to the left-right force 9 is transmitted in the reverse order as described above. At this time, the support shaft 14 is fixedly supported except for the rotation direction of the shaft, and a maximum moment force acts on the bearing 8 and the support shaft 14 by the lateral force 9 and the reaction force 10. However, the maximum moment is halved as compared with the conventional rotary support, and the load on the bearing 8 is reduced. In the above description, the model is simplified for ease of explanation.
Although description has been made (rotational support in the past, fixed support in this embodiment), complete rotation support and fixed support are not achieved in reality, but the load on the bearing 8 part tends to be the above-mentioned tendency.

According to this embodiment, the moment force can be borne by the support shaft 14 as well, and the load on the bearing 8 can be reduced.

Also, when assembling like a bogie for high-speed vehicles,
Although it may be required to accurately measure the dimensions of the shaft distance 11 and the diagonal 12 shown in FIG. 4, as shown in FIG. 2, the shaft tension arm 4 is bolted by a bolt 15 on a horizontal fastening surface. Since the shaft box body 1 can be finely adjusted in the front-rear direction in the rail direction by the divided configuration, the shaft distance 11 and the diagonal 12
Can be accurately adjusted.

Next, FIGS. 5 and 6 show another embodiment in which the shaft tension arm 4 is divided and bolted. The shaft tension arm 4 is divided and configured by a bolt fastening method having a fastening surface parallel to the longitudinal centerline of the bogie and perpendicular to the ground. Even with such a configuration, the same effect as that of the above-described embodiment can be obtained.

Further, FIGS. 7 and 8 show still another embodiment in which the shaft tension arm 4 is divided and bolted. The shaft tension arm 4 is divided into bolts having a fastening surface perpendicular to the front-rear centerline of the bogie to be divided. Even in such a configuration, the same effect as described above can be obtained by inserting the adjusting plate 13 in the fastening surface.

The present embodiment further has the following features. (1) The axle box arm that supports the axle end supports the gravity direction of the bogie frame via a coil spring, and the axle box arm that supports the axle box body in the rail longitudinal direction and the axle direction is provided. One is fixed to the shaft box body, the other of the shaft tension arms is supported on the bogie frame side, and the length of the shaft tension arms can be adjusted in the rail longitudinal direction. . (2) A coil spring is mounted on the axle box body attached to the axle end to support the bogie frame on the spring, and the tip of the shaft tension arm integrally formed with the axle box body is dolly via a rubber bush. In the shaft tension type shaft box support device attached to the frame, the rubber bush is divided into two parts on the right and left, and the shaft tension arm of the shaft box body is fixed by the bolt fastening method having the fastening surface parallel to the longitudinal center line of the bogie. A shaft-retractable shaft box support device characterized by being configured separately. (3) In the axle tension type axle box support device of the above (2), the axle tension arm is divided and configured by a bolt fastening method having a fastening surface perpendicular to the longitudinal centerline of the bogie. Vehicle axle box support device.

[0015]

According to the present invention, when a lateral force is applied to the wheel axle by the rail during traveling, the momentary force can be borne by the support shaft portion by the elastic bush,
It is possible to reduce the momentum force acting on the bearing, thereby reducing the burden on the bearing against the lateral force from the rail.

[Brief description of drawings]

FIG. 1 is a plan sectional view showing an embodiment of an axle box supporting device of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a plan view of a truck provided with the axle box supporting device of the present invention.

FIG. 5 is a plan sectional view showing another embodiment of the shaft tension arm of the present invention.

FIG. 6 is a side view of FIG. 5;

FIG. 7 is a plan sectional view showing still another embodiment of the shaft tension arm of the present invention.

FIG. 8 is a side view of FIG. 7;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Axle box, 2 ... Bogie frame, 3 ... Coil spring, 4 ... Axial arm, 5 ... Rubber bush, 6 ... Wheel, 7 ... Axle, 8 ... Bearing, 9 ... Left / right force, 10 ... Reaction force, 11 ... Shaft Distance, 12 ... Diagonal, 13 ... Adjusting plate, 14 ... Support shaft, 15 ... Bolt.

Claims (1)

[Claims] 1. A shaft box arm supporting an axle end supports a gravity direction of a bogie frame via a coil spring, and a shaft tension arm for supporting the shaft box body in a rail longitudinal direction and an axle direction is provided. One of the tension arms is fixed to the axle box body, and a support shaft parallel to the axle is provided on the other of the axle arms to support the bogie frame side so as to be rotatable about the support axis. An axle box support device, characterized in that it is attached to the bogie frame side via elastic bushes at both ends of the axle.