JPH0433668B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a bogie for a railroad vehicle, and particularly to a bogie for a railroad vehicle suitable for running on curves at high speed.

[Background of the invention]

2. Description of the Related Art In order to improve the curve passing performance of a railway vehicle, a steering bogie has been proposed that performs so-called steering by swinging a wheel set toward the center of a curve in a horizontal plane. However, if the steering performance of this steering bogie is improved, there is a problem in that running stability during high-speed running is reduced, and thus it has not been widely adopted. However, the above-mentioned problems have been solved, the steering performance on curves is good, and
Awarded as a vehicle with high running stability at high speeds.
The one described in Japanese Patent No. 58-48383 is known.
This configuration first uses a wheel set with a large tread slope and excellent steering performance, supports the axle box bodies provided at both ends of the wheel set with an adapter and a support frame, and connects the support frame to a bogie via an elastic body. It is elastically supported by the side beams so that it can move back and forth. In addition, with only the above-mentioned configuration, since the two wheelsets arranged in parallel each cause their own yawing motion, the movement in the steering mode, that is, the distance at one end of each wheelshaft increases, and the distance at the other end increases. Cross anchors diagonally connect the support frames of each wheel axle to allow a narrowing motion and to restrict a diamond deformation mode, that is, a movement in which the end portions of each wheel axle move in the same direction.

However, although the above-mentioned configuration has been put into practical use in various ways and has great effects, it has the following drawbacks when attempting to further expand its range of use and increase speed. First, the above-mentioned configuration is easy to apply as a slave truck, but when used in a drive truck with an electric motor, the structure of the truck becomes complicated due to the installation space of the electric motor, the support structure of the drive device, etc., and the weight increases. There were disadvantages such as an increase in the amount of water and complicated work during manufacturing and maintenance and inspection. Further, in the above-mentioned configuration, the connection state between the bogie frame and the support frame, that is, the longitudinal positioning of the wheel set and the bogie frame is determined only by the elastic body, and a large longitudinal force is applied to the bogie frame. It is difficult to absorb this force when it acts between two members. Therefore, it is difficult to apply it to a high-output drive truck.
Furthermore, in the above-mentioned configuration, the cross anchor is placed under the spring of the truck and is subjected to large vibration acceleration, which increases wear on the pins that are the connecting members, requiring a lot of time and effort for maintenance. Due to the increase in the number of lower parts, the unsprung weight increased, and there were drawbacks such as an increase in track damage as the speed increased.

[Purpose of the invention]

An object of the present invention is to improve running stability on curves in a railway vehicle bogie having two wheel sets by steering the shaft centers of each wheel set in conjunction with each other in the direction of the center of the curve. The object of the present invention is to provide a bogie for a railway vehicle that can reduce wear on wheel flanges and rails with a simple structure.

[Summary of the invention]

In the present invention, two wheel axles each having a wheel with a sloped tread and having an axle box support means installed at the end of the axle are arranged at the front and rear positions of a bogie, and a wheel axle is provided on each wheel axle via the axle box support means. In a railway vehicle bogie that supports a car body via a car body support device that supports a bogie frame, allows relative horizontal displacement on the bogie frame, and transmits longitudinal force, each axle box support means is connected to each wheel axle. The bogie frame has an elastic body that allows relative prying displacement in a horizontal plane with respect to the bogie frame, and the bogie frame is composed of two bogie frame constituent members arranged to cross each other, and one of the bogie frame constituent members is One end of one of the two wheel axles and one end of the other wheel axle at a diagonal position of the bogie are connected via the axle box support means, and the other bogie frame component is connected to the two wheel axles. The other end of one of the wheel axles and the other end of the other wheel axle at a position diagonal to the bogie are connected via the axle box support means.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 6. FIGS. 1 and 2 are a plan view and a side view showing an embodiment of a railway vehicle bogie according to the present invention. In the figure, 1 is a wheel set arranged in parallel, and 2 is a drive device provided between the wheels of the wheel set 1. The drive device 2 is connected to a motor 5 via a shaft joint 3 and is supported by a truck frame component 9 by a drive device hanger 4.
Reference numeral 6 denotes bearings attached to both ends of the wheel axle 1, and an axle box body 25 is provided on the outside thereof via an elastic body 7, allowing relative prying displacement, etc. between the bearing 6 and the axle box body 25. The configuration is possible. 8 is provided between the axle box body 25 and the bogie frame 9, and the axle box body 2
The axle box body 25 is positioned with respect to the bogie frame by the axle spring 8 of a roll rubber type that can perform positioning and spring action.
The bogie frame is different from the conventional one-piece type, and the wheel axle 1
The diagonal positions of the bearings 6, namely A and D and B and C
It is composed of independent bogie frame constituent members (hereinafter simply referred to as bogie frames) 9 and 10, which are connected and arranged in an intersecting manner. As described above, the drive device 2 is supported by the bogie frame 9 via the drive device hanger 4, and the motor 5 is directly supported by the bogie frame 9, and the drive device 2 and motor are supported by the bogie frame 9. It is configured to support the driving reaction force of 5 or its own weight. A pillow beam 12 is placed on the bogie frame 9 and the bogie frame 10 via an elastic body 11, and the pivoting movement of the bogie frames 9 and 10 with respect to the pillow beam 12 is permitted by the elastic displacement of the absolutely elastic body 11. be done. 13 is a bolster anchor whose one end is swingably attached to the pillow beam 12; 15 is a bolster anchor receiver whose other end is swingably connected to the bolster anchor 13 and which is attached to the vehicle body; The bolt star anchor 13 and the bolster anchor receiver 15 transmit longitudinal force between the pillow beam 12 and the vehicle body. Reference numeral 14 denotes an air spring that elastically supports the vehicle body on the pillow beam 12. Reference numeral 16 denotes a plurality of longitudinal force transmission links for transmitting longitudinal force between the bogie frames 9 and 10 and the pillow beam 12, one end of which is swingably connected to the bogie frame 9. , one end of the longitudinal force transmission link 16 at the other end is swingably connected to the bogie frame 10, and each other end is connected to the center pin 2 attached to the pillow beam 12.
6 so as to be swingably connected. Note that the wheel tread surface of the wheel axle 1 is provided with a sufficient tread slope for the wheel axle 1 to perform self-steering.

In such a configuration, the curve passing state of the bogie having the above configuration will be explained. Each wheel axle 1 has diagonally positioned bearing portions on the bogie connected to each other by bogie frames 9 and 10. That is, one end A of one wheel axle 1 and one end D of the other wheel axle 1 are connected by a bogie frame 10, and the other end B of one wheel axle and the other end C of the other wheel axle are connected by a bogie frame 9. has been done. For this reason, with respect to the movement of the wheel sets 1 in the horizontal plane, the configuration is such that only a steering mode operation in which the distance between one side of each wheel set 1 is narrowed and the distance between the other wheelset 1 is relatively widened is allowed. Therefore, when the bogie enters a curved road and each wheel axle 1 performs self-steering based on the current gradient of each wheel, since each wheel axle 1 is connected by the bogie frames 9 and 10, the wheelsets 1 are connected to each other by the bogie frames 9 and 10. Tilt the center of each axis toward the center of the curve while working together. Then, as shown by the dotted lines in FIG. 3, each wheel set 1 is steered to approximately the same steering angle.

According to this configuration, the two wheelsets 1 constituting the bogie can be linked to each other and steered almost equally toward the center of the curved road, so that the running stability of the bogie when traveling on the curve can be improved. can be improved. That is, the steering angles of each wheel set 1 are substantially the same since they are connected by the bogie frames 9 and 10, and each wheel is formed so as to be substantially parallel to the rail. Therefore, it is possible to reduce the wear of the flange portion of the wheel on each wheel axle 1, and also to reduce the wear of the reel. In addition, since the bogie frames 9 and 10 themselves serve as members that allow the steering mode of the wheel set 1, there is no need to provide a cross anchor as a separate member as shown in the conventional example, and the number of parts can be reduced. The structure can be simplified, and since no link member or the like is provided in the lower part of the spring, the unsprung weight can be reduced and problems such as destruction of the track can be prevented. Moreover, between the wheel set 1 and the bogie frames 9 and 10,
An axle spring 8 for positioning the wheel axle 1 is provided, and since it has a sufficient longitudinal force load capacity, it can be applied to a large-output driving bogie or a bogie with a large brake deceleration.

In addition, in the above-described embodiment, a configuration using a roll rubber system as the shaft spring 8 was explained, but the present invention is not limited to this, and the same effect can be obtained even if a sliding plate system or the like is used. .

Next, FIG. 4 is a side view of a pillow beam section showing another embodiment of the railway vehicle bogie according to the present invention. In the same figure, the difference from the above embodiment is that in the structure of the embodiment, the pillow beams 12 of the bogie frames 9 and 10 are
The structure is such that the displacement during the turning operation is allowed by the horizontal displacement of the elastic body 11.
This embodiment is an improvement on this point, and the elastic body 17
A sliding plate 18 is attached to the carriage frame 9, 1 by causing relative sliding between the sliding plate 18 and the pillow beam 12.
This allows a zero turning movement.

According to such a configuration, the steering operation of each linked shaft 1 can be performed in the same manner as in the previous embodiment. In addition, in this embodiment, since the reaction force accompanying the turning movement of the underframes 9 and 10 can be reduced, wear on the wheels or rails can be reduced more than in the embodiments described above, and running stability can be improved. .

Next, FIGS. 5 and 6 are a plan view and a side view showing another embodiment of a bogie for a railway vehicle according to the present invention. In the same figure, the same reference numerals as in the previous embodiment indicate the same members. This embodiment differs from the previous embodiment in that the pillow beam is eliminated and a bolsterless system is adopted. That is, the vehicle body is directly supported on the bogie frames 9 and 10 via the pillow springs 22. The longitudinal force transmission means between the bogie frames 9 and 10 and the vehicle body is
A longitudinal force transmission link 2 whose one end is connected to the bogie frame 9 and the bogie frame 10 with a center pin 23 provided on the lower surface of the vehicle body.
1. In addition, the bogie frame 9, 1
0, wheel axle 1, drive device 2, motor 5, etc. are the same as in the previous embodiment.

In such a configuration, the steering operation of the wheel set 1 can be performed in the same manner as in the previous embodiment. In addition, the turning of the entire truck with respect to the car body is controlled by the pillow spring 22.
This is allowed by the lateral elastic deformation of .

According to such a structure, the structure of the truck can be simplified, and the structure of the vehicle body support part can be simplified. Therefore, the height of the lower surface of the vehicle body can be lowered, and driving stability can be further improved.

In each of the above embodiments, an example of a driving truck has been described, but the present invention is not limited to this, and the same effects can be obtained even when applied to a slave truck.

〔Effect of the invention〕

As explained above, according to the present invention, in a railway vehicle bogie having two wheel axles, each wheel axle is connected by a bogie frame component so that the diagonal positions of the bogie are interlocked. Steering is performed by tilting the shaft centers in conjunction with each other in the direction of the center of the curve, improving running stability on curves.
Moreover, the wear of the wheel flanges and rails can be reduced with a simple structure.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of a railway vehicle bogie according to the present invention, FIG. 2 is a side view of FIG. 1, and FIG.
1 is a plan view showing the state of the wheel axle in the bogie of FIG. 1, FIG. 4 is a side view of a pillow beam section showing another embodiment of the bogie for a railway vehicle according to the present invention, and FIG. FIG. 6 is a plan view showing another embodiment of the vehicle truck, and FIG. 6 is a side view of FIG. 5. 1...Wheel shaft, 2...Drive device, 3...Shaft coupling,
4... Drive device suspension, 5... Motor, 6... Bearing,
7, 11...Elastic body, 8... Axial spring, 9, 10...
... Bogie frame, 12 ... Pillow beam, 13 ... Bolster anchor, 14 ... Air spring, 15 ... Bolster anchor receiver, 16 ... Longitudinal force transmission link, 25 ... Axle box body.

Claims (1)

[Scope of Claims] 1. Two wheel axles each having a wheel with a sloped tread and having an axle box support means installed at the end of the axle are arranged at the front and rear positions of the truck, and the axle box supporting means is placed on each wheel axle. In a railway vehicle bogie that supports a bogie frame via a car body support device that allows relative horizontal displacement on the bogie frame and transmits longitudinal force, each of the axle box support means has an elastic body that allows relative prying displacement of each wheel axle with respect to the bogie frame in a horizontal plane, and the bogie frame is composed of two bogie frame constituent members arranged intersectingly, and one of the bogie frames The structural member connects one end of one of the two wheel sets and one end of the other wheel set at a diagonal position of the bogie via the axle box support means, and the other bogie frame constituent member A bogie for a railway vehicle, characterized in that the other end of one of the wheel axles and the other end of the other wheel axle at a diagonal position of the bogie are connected via the axle box support means.