JP2001063568A - Truck for rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To aim at weight reduction for non-suspended weight while extreme weight saving is being aimed at by doing without a truck frame, and prevent an intermediate beam from being rotated to the pitching and yawing directions. SOLUTION: Let axle springs 5 and 6 disposed directly above bearing boxes 3 and 4 provided for both the end parts of a front and a rear wheel set 1 and 2, directly support the load of a body for a rolling stock 7. The front and rear, and right and left bearing boxes 3 and 3, and 4 and 4, are connected with an intermediate beam 8 by way of elastic bodies 9. Let the intermediate beam 8 be supported by the body 7 of the rolling stock through either of four elastic bodies 11 in total composed of two ones in the longitudinal direction, and of two ones in the right and left direction, or links. This constitution thereby can do without the truck frame so that extreme weight saving can be aimed at. Furthermore, non-suspended weight can be lightened, so that the trucks of the rolling stock excellent in high speed running performance can be obtained, and in addition, even if braking force is applied thereto, the intermediate beam will never be rotated in the pitching and yawing directions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a bogie for a railway vehicle.

[0002]

2. Description of the Related Art As a bogie for a railway vehicle in which a vehicle body load is supported by a shaft spring disposed immediately above a bearing box provided at both ends of a wheel axle, there is one disclosed in, for example, JP-A-9-301163. This bogie for railway vehicles is provided with an air spring that connects the bogie frame and the vehicle body, near the upper portion of each shaft spring that connects the axle box and the side beam at both ends of the front and rear axles,
The other end of the traction link connecting one end is connected to the lower part of the vehicle body at the center of the cross beam without passing through the center pin. It is stated that such a structure allows the structure to be simple and lighter. Further, as a bogie for a railway vehicle having a similar structure, there are those disclosed in Japanese Patent Application Laid-Open Nos. 57-90262 and 55-156761.

[0003]

However, in the device disclosed in Japanese Patent Application Laid-Open No. 9-301163, since the bogie frame is indispensable, a fundamental weight reduction of the bogie cannot be achieved. On the other hand, JP-A-57-90262 and JP-A-55-90262
In the device disclosed in Japanese Patent No. 156761, although the bogie frame can be omitted, there are the following problems.

Japanese Patent Laid-Open Publication No. 57-90262 discloses an intermediate beam (guide frame) for connecting the front and rear wheel sets in a horizontal direction, which is directly fixed to the wheel set. The own weight is applied to the wheel set, and the unsprung weight becomes excessive. Further, in the structure disclosed in Japanese Patent Application Laid-Open No. 55-156761, a portion (rubber ring) elastically supporting an intermediate body that connects the front and rear wheel shafts in a horizontal direction from the vehicle body has a ring-shaped bush shape. Therefore, if the intermediate body attempts to rotate in the pitching or yawing direction due to the reaction force of the braking device when a braking force is applied to each wheel set, there is not enough span to receive the reaction force moment. Therefore, the intermediate body rotates in the pitching direction and the yawing direction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has a structure in which a bogie frame is omitted to achieve a significant reduction in weight, a reduction in unsprung weight, and a reduction in braking force. Another object of the present invention is to provide a bogie for a railway vehicle in which an intermediate beam does not rotate in a pitching direction or a yawing direction.

[0006]

In order to achieve the above-mentioned object, a truck for a railway vehicle according to the present invention has a body load directly supported by a shaft spring disposed directly above a bearing box provided at both ends of a wheel axle. At the same time, the front, rear, left and right bearing housings are connected by an intermediate beam via an elastic body, and the intermediate beam is supported on the vehicle body by one of four elastic bodies or links, two in each of the front and rear direction and the left and right direction. And that. By doing so, the bogie frame is omitted and the weight is significantly reduced, while the unsprung weight is reduced and the intermediate beam rotates in the pitching and yawing directions when a braking force is applied. Can be prevented.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The bogie for a railway vehicle of the present invention has a structure in which a body load is directly supported by shaft springs disposed immediately above bearing boxes provided at both ends of front and rear wheel sets, and the front, rear, left and right bearing boxes are elastically supported. An intermediate beam is connected through the body, and the intermediate beam is supported on the vehicle body by either a total of four elastic bodies or links in each of two in the front-rear direction and the left-right direction.

In the bogie for a railway vehicle according to the present invention, the body load is directly supported by the shaft springs disposed directly above the bearing boxes provided at both ends of the front and rear wheel sets, so that the bogie frame can be omitted. . Note that, in the railcar bogie of the present invention, the lateral displacement between the vehicle body and the bogie or the yawing displacement when passing through a curved road is allowed by the shear deformation of the shaft spring.

In addition, the railcar bogie according to the present invention is characterized in that the front, rear, left and right bearing housings are connected by an intermediate beam via an elastic body.
As we kept interval (wheelbase) of wheelset in the front and back direction,
The weight of the intermediate beam is supported by the vehicle body and is not directly applied to the wheel set.

Further, in the railcar bogie according to the present invention, the elastic members or links for supporting the intermediate beam from the vehicle body are arranged at two locations in each of the front and rear direction and the left and right direction, so that a braking force is applied to the wheel shaft. Even if the reaction force of the brake device when applied acts on the intermediate beam, the intermediate beam does not rotate.

[0011]

FIG. 1 is a perspective view of a bogie for a railway vehicle according to the present invention.
A description will be given based on the embodiment shown in FIG. FIGS. 1 to 3 show a first embodiment of a bogie for a railway vehicle according to the present invention, and FIGS.
FIG. 7 is a view showing a second embodiment of a bogie for a railway vehicle according to the present invention;
FIG. 9 to FIG. 9 are views showing a third embodiment of the railway vehicle bogie of the present invention, FIGS. 10 to 12 are diagrams showing a fourth embodiment of the railway vehicle bogie of the present invention, and FIGS. FIGS. 1, 4, 7, 10, and 13 are front views, FIGS. 2, 5, 8, and 1, respectively, showing a fifth embodiment of a bogie for railway vehicles.
1, 14 are plan views, FIG. 3, FIG. 6, FIG. 9, FIG. 12, FIG.
5 is a side view.

1 to 15, reference numerals 1 and 2 denote wheels 1
a, 2a and axles 1b, 2b are integrally formed, and are provided with bearing boxes 3, 4 at both ends. Reference numerals 5 and 6 denote shaft springs that are disposed directly above the bearing housings 3 and 4 and directly support the load of the vehicle body 7.
In the first embodiment shown in FIG. 4 and the fourth embodiment shown in FIGS. 10 to 12, the air spring is used, the second embodiment shown in FIGS. 4 to 6, and the third embodiment shown in FIGS. In the embodiment and the fifth embodiment shown in FIGS. 13 to 15, an embodiment employing a coil spring is shown.

Numeral 8 designates an intermediate beam, which connects bearing boxes 3, 3 and 4, 4 arranged at the front, rear, left and right via an elastic body 9. In the embodiment shown in FIGS. Arms 3a and 4a extend rearward from the boxes 3 and 3 and forward from the bearing boxes 4 and 4, respectively, and are connected to the arms 3a and 4a via elastic bodies 9. Showing things. And, by this intermediate beam 8, the front and rear wheel axles 1,
The two are kept parallel and spaced.

In addition, in the railcar bogie of the present invention, as shown in FIGS. 1 to 15, the intermediate beam 8 is connected to the intermediate beam 8 via the support seat 10 also serving as a traction device.
The vehicle body 7 is supported by one of the four elastic bodies 11 or the links 12 which are arranged at a sufficient distance between the elastic body 11 and two places in the left-right direction. For example, FIGS.
The first, second, fourth, and fifth embodiments shown in FIGS. 15 to 15 are supported by the elastic body 11 and the links 12 in the third embodiment shown in FIGS. Are shown.

In the bogie for a railway vehicle of the present invention, the intermediate beam 8 is supported by the vehicle body 7 and the bearing housings 3, 3
, 4 and 4 are connected via an elastic body 9, and the weight of the intermediate beam 8 is reduced by the rotation of these elastic bodies 9 and the rotation of the bearings in the bearing housings 3 and 4. Will not be loaded. Therefore, the intermediate beam 8 is vertically aligned with the axle 1,
It can move without having a large resistance to 2.

Further, in the railcar bogie according to the present invention, in which the intermediate beam 8 is supported on the vehicle body 7 via the elastic body 11,
By increasing the rigidity in the vertical direction of the elastic body 11 interposed between the intermediate beam 8 (support seat 10) and the vehicle body 7 and reducing the rigidity in the shearing direction, the lateral displacement between the vehicle body 7 and the bogie, and the curve The yawing displacement at the time of passing the road can be allowed.

Further, in the railcar bogie of the present invention, the intermediate beam 8 is attached to the vehicle body 7 by four elastic members 11 or links 12 arranged at a sufficient interval in the front-rear direction and the left-right direction of the vehicle body 7. Because of the support, the rotation of the intermediate beam 8 in the pitching direction due to the brake reaction force of the brake device 13 attached to the intermediate beam 8 can be prevented. Similarly,
The rotation of the intermediate beam 8 in the rolling direction due to the imbalance of the brake reaction force of the brake devices 13 disposed on the left and right can be prevented.

The bogies for railway vehicles according to the present invention are not limited to the general vehicles such as the first to third embodiments shown in FIGS. 1 to 9, but the fourth and fifth embodiments shown in FIGS. As shown in the example, the vehicle bodies 7a,
Needless to say, the present invention can also be applied to an articulated bogie supporting 7b.

Reference numerals 14 and 15 in FIGS. 1 to 3 and FIGS. 10 to 12 denote height adjusting devices for the air spring.

[0020]

As described above, in the bogie for a railway vehicle of the present invention, the bogie frame can be omitted, so that the weight can be significantly reduced. Further, since the unsprung weight can be reduced, it is possible to obtain a bogie for a railway vehicle having excellent high-speed running performance. Further, in the railcar bogie of the present invention, even when a braking force is applied, the intermediate beam does not rotate in the pitching direction or the yawing direction.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of a bogie for a railway vehicle according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a front view showing a second embodiment of the bogie for a railway vehicle according to the present invention.

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is a side view of FIG. 4;

FIG. 7 is a front view showing a third embodiment of the bogie for a railway vehicle according to the present invention.

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

FIG. 9 is a side view of FIG. 7;

FIG. 10 is a front view showing a fourth embodiment of the bogie for a railway vehicle according to the present invention.

FIG. 11 is a plan view of FIG. 10;

FIG. 12 is a side view of FIG. 10;

FIG. 13 is a front view showing a fifth embodiment of the bogie for a railway vehicle according to the present invention.

FIG. 14 is a plan view of FIG.

FIG. 15 is a side view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wheel shaft 2 Wheel shaft 3 Bearing box 4 Bearing box 5 Shaft spring 6 Shaft spring 7 Body 8 Intermediate beam 9 Elastic body 11 Elastic body 12 Link

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Ryohei Shimune 2-2-2, Yoyogi, Shibuya-ku, Tokyo East Japan Railway Company General Planning Division (72) Inventor Yoji Sato Konohana-ku, Osaka-shi, Osaka No. 5-109, Shimaya Sumitomo Metal Industries, Ltd. Kansai Works Steelworks Business (72) Inventor Satoshi Tokunaga 5-1-1, Shimaya, Konohana-ku, Osaka City, Osaka Sumitomo Metal Industries, Ltd. Kansai Works Steelworks Business Inside

Claims (1)

[Claims] 1. A vehicle body load is directly supported by shaft springs disposed immediately above bearing boxes provided at both ends of front and rear wheel sets, and front, rear, left and right bearing boxes are connected by an intermediate beam via elastic bodies. A total of 4 intermediate beams, two in each of the front and rear direction and the left and right direction
A bogie for a railway vehicle, wherein the bogie is supported on a vehicle body by any one of elastic members or links.