JPH10217962A - Variable gauge bogie for rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a right and a left axle from being inclined owing to bending moment by restraining the occurrence of bending moment taking place at the sliding portion, and thereby enhance the running stability of a rolling stock. SOLUTION: This bogie is so constituted that let paired independent axles where each axle is provided with one wheel, be faced to each other over an identical axial line, and the axles are mutually moved reversely in the right and left directions so as to allow the wheel gauge to be changed, so that direct running between different gauges can thereby be performed. In this case, bearings provided for both the ends of the right and left independent axles, are housed in axle boxes 3a and 5a in such a way as to be freely slid in the axial line direction, which are firmly supported by supporting members 6a and 6b projected downward out of the four places of axle box supporting beams 6 provided in parallel with the right and left axles while being independent out of a bogie frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail-to-rail variable bogie for railroad vehicles for directly operating a train between tracks having different rails.

[0002]

2. Description of the Related Art In a conventional bogie for a railway vehicle, a wheel axle having one wheel mounted on each end of one axle is used, and the distance between the contact points of the wheels with the rails is determined. Therefore, it is not possible to directly operate a single train on a track between different gauges such as a conventional line and a Shinkansen.

[0003] As described above, in order to travel on a plurality of railways having different gauges, it is necessary to change trains.
There was a disadvantage that it was inconvenient and time-consuming.

In order to eliminate the inconvenience of changing trains,
A bogie replacement system and a gauge change system are known. The former method of exchanging bogies involves exchanging bogies at a point where the gauge changes, but the exchanging operation takes time, and is not practical except at places where vehicle stops are relatively long, such as at national borders.
In the latter method of changing the gauge, one bogie can travel on a track between different gauges by sliding a wheel set.

As a method for changing the gauge, two cylinders on the left and right on which wheels are fitted are slidably mounted on the axle, and the two cylinders are moved in opposite directions to change the gauge. Dolly (Japanese Unexamined Patent Publication No. 6-206541)
Japanese Patent Application Laid-Open No. 7-52795), and a gauge changing bogie that couples a pair of T-shaped bogie frames via a link to change the distance between the left and right beams has been proposed.

[0006]

Among the above-mentioned gauge changing methods, the one described in Japanese Patent Application Laid-Open No. 6-206541 discloses a sliding portion for moving a cylindrical portion having wheels fitted to an axle. Generates a bending moment. Therefore, it is difficult to guarantee the reliability of the sliding portion. Further, the one described in Japanese Patent Application Laid-Open No. 7-52795 has a drawback that the number of constituent members increases and the structure becomes complicated because there are many variable portions.

According to the present invention, a bending moment generated in a sliding portion is suppressed in a rail-to-rail variable bogie in which a pair of independent wheel shafts each having one wheel mounted thereon are opposed to each other on the same axis and are moved in opposite directions in the left-right direction. This proposes a rail-gauge change bogie for a railway vehicle in which the inclination of the left and right wheel shafts based on the bending moment is prevented and the running stability of the vehicle is improved.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, a rail-carriage-change bogie according to the present invention comprises a pair of independent wheel shafts each having one wheel mounted thereon, which are opposed to each other on the same axis, and which are opposite to each other in the left-right direction. In the rail-to-rail variable bogie, which can be moved in the direction to change the wheel interval and enable direct operation between tracks between different rails, four axle boxes in which bearings provided at both ends of the left and right independent axles are slidably fitted are provided. It is characterized by being rigidly supported by one axle box support beam provided in parallel with the independent wheel axis.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 3, bearings 3 and 5 at both ends of the left and right independent wheel sets are provided independently of the bogie frame and in parallel with the left and right independent wheel sets. Support members 6a, 6b projecting downward at some places are slidably supported in the axial direction via shaft boxes 3a, 5a. That is, each of the axle boxes 3a, 5a is rigidly connected to the support members 6a, 6b, and the outer rings of the bearings 3, 5 are fitted to the inner peripheral surfaces of the axle boxes 3a, 5a without any gap within a slidable range. Therefore, the axle center lines of the left and right independent axles are on the same line, and no bending moment is generated between the axles of the left and right independent axles regardless of whether the wheel 1 is on the narrow gauge side or the standard gauge side. Note that the axle box support beam 6 may be provided not only in the horizontal direction but also in an oblique direction as long as the axle box can be rigidly supported.

As described above, since the axle box supporting beam 6 bears the bending stress caused by the vehicle body load, the bending of the left and right wheel sets is prevented without generating a bending moment on the left and right independent wheel sets, and the safe running of the vehicle is ensured. You.

[0011]

An embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 4, the pair of left and right independent axles has one wheel 1 mounted on an axle 2 and bearings 3 and 5 at both ends. The bearings 3 and 5 of the independent axles facing left and right with the drive device 7 interposed therebetween are housed in the axle boxes 3a and 5a so as to be slidable in the axial direction of the axle. The four left and right axle boxes 3a, 5a are connected to the left and right side beams 13a, 13b.
And a supporting member 6a projecting downward from the axle box supporting beams 6, 16 provided between the side beams 13a, 13b at the front and rear ends of the bogie frame separately from the bogie frame including two front and rear cross beams 14,
6b, 16a and 16b are rigidly attached. The axle box support beams 6, 16 are independent of the left and right side beams 13a, 13b, and are connected by a suspension link 23 between the axle box 5a inside the left and right independent axles and the transverse beam 14 of the bogie frame. Although it is fixed in the traveling direction of the bogie, it is configured to be able to move freely in the vertical direction. Also, the inner axle box 5a
The drive device 7 interposed between the support members 24 is attached to the axle box support beams 6, 16 by the support member 24.
May be supported by a bogie frame.

The bearings 3 and 5 have cages 3b and 5b
Axle box 3 so as to slide on the outer peripheral surface of the cage.
a, 5a, and a load supporting member 25 for supporting the vehicle body on a load supporting rail for lifting wheels at the time of rail-to-gauge conversion is provided on an end surface of the outer axle box 3a. The axle boxes 3a and 5a are provided with locking means such as lock pins for fixing the axle to a narrow gauge or a standard gauge.

A deep inner hole is formed at the inner end side of the axle 2, and the inner peripheral surface thereof is provided with internal teeth 4 whose tooth forms are aligned in the axial direction. Then, the shaft 8 of the large gear 9 in the drive device 7
A gear 26 meshing with the internal teeth provided at the shaft end and a gear 27 meshing with the internal teeth 4 of the axle are mounted on both ends of the same shaft 12a to form the gear type interior joint 12.

The drive unit 7 is disposed at the center of the bogie in both front and rear axles in order to transmit power to the left and right independent axles evenly. It is necessary to arrange the drive shaft of the motor obliquely with respect to the front-rear direction of the bogie in order to accommodate 18 and 19.

For this purpose, the large gear 9 mounted on the shaft 8 of the drive unit 7 is formed by a bevel gear, and the gear shaft 11 meshes with a small gear 10 formed by a bevel gear inclined with respect to the longitudinal direction of the bogie. The gear shafts 11 of the small gears with respect to the front and rear drive devices 7 are supported by bearings 11a in such a manner that they are inclined in opposite directions to be parallel to each other. And the side beam 13a and the cross beam 14
And a pair of support plates 2 provided between the side beams 13b and the cross beams 14.
Motors 18 and 19 are attached to the motor 8, respectively, and the drive shaft 29 of the motor and the gear shaft 11 of the small gear 10 are connected by a gear-type flexible shaft coupling 20, thereby forming a beveled cardan type drive device.

The axle box support device is shown in FIGS. 1, 2 and 4.
As shown in FIG.
The coil spring 17 is provided between the coil springs 17a and 13b.

The axle box support beams 6, 16 rigidly support the four axle boxes 3a, 5a of the left and right independent axles, and are generated by a vehicle load received by the outer axle box 3a and a rail reaction force against the load. The left and right independent axles can be prevented from tilting due to the bending moment.

The change of the gauge of the present variable-gauge trolley is performed by a gauge change device provided at the contact point between the narrow gauge and the standard gauge, for example, two different gauges.
A load supporting member 25 protruding from an outer bearing is mounted on a load supporting rail for lifting the vehicle body to such an extent that the wheel load is provided between the different types of rails facing each other at an interval, and the wheel shaft is moved. Remove the locking member that is holding the rail, and move the wheel by the guide rail during that time, or move the wheel axle using a hydraulic cylinder etc., change the gauge from narrow gauge to standard gauge, or from standard gauge to narrow gauge, again That is, the movement of the wheel set is stopped, and the vehicle moves to the other rail. In each figure, the wheel 1 indicated by a solid line is in a state of a narrow gauge, and the wheel 1 'indicated by a broken line is in a state of a standard gauge.

A gear-type interior joint 12 connecting the axle 2 and the drive unit 7 includes a gear 26 meshing with an internal gear provided at the shaft end of the shaft 8 of the large gear 9 in the drive unit 7, and an axle side on the inner end side. Gear 2 meshing with internal teeth 4 formed on the inner peripheral surface of the deep hole provided in
7 are attached to both end portions of the shaft 12a, and the gear 27 can significantly displace the meshing position with the internal teeth 4 in the left-right direction. Can communicate.

In the above-described embodiment, the bogie having a motor drive device for a motor vehicle has been described. However, this gauge-variable bogie can be used for an auxiliary vehicle having no motor. In that case, the large gear 9 and the small gear 10 may be removed from the driving device 7 to leave the shaft 8 supported by the bearing and the outer box.

[0021]

According to the truck with variable gauge according to the present invention, bearings provided at both ends of the left and right independent axles are slidably fitted.
By rigidly supporting one axle box on one axle box support beam, the bending of the left and right axles is prevented without generating bending moments on the left and right independent axles, thereby ensuring safe traveling of the vehicle.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a front view of the variable-gauge trolley shown in FIG.

FIG. 3 is a side view of the variable gauge carriage shown in FIG. 1;

FIG. 4 is a cross-sectional view taken along line BB of FIG. 5;

FIG. 5 is a longitudinal sectional side view showing the axle box support beam and each axle box portion cut along the line AA in FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 wheel 2 axle 3, 5 bearing 3a, 5a axle box 3b, 5b retainer 4 internal teeth 6, 16 axle box support beam 6a, 6b, 16a, 16b support member 7 drive device 8 axis 9 large gear 10 small gear 11 gear Shaft 12 Gear type interior joint 12a Shaft 13a, 13b Side beam 14 Cross beam 15 Shaft box support device 17 Coil spring 18, 19 Motor 20 Gear type flexible shaft joint 21, 22 Bearing 23 Suspended link 24 Support member 25 Load support member 26, 27 Gear 28 Support plate 29 Drive shaft

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[Procedure amendment]

[Submission date] January 30, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

[0011]

An embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 4, the pair of left and right independent axles has one wheel 1 mounted on an axle 2 and bearings 3 and 5 at both ends. The bearings 3 and 5 of the independent axles facing left and right with the drive device 7 interposed therebetween are housed in the axle boxes 3a and 5a so as to be slidable in the axial direction of the axle. The four left and right axle boxes 3a, 5a are connected to the left and right side beams 13a, 13b.
And a supporting member 6a projecting downward from the axle box supporting beams 6, 16 provided between the side beams 13a, 13b at the front and rear ends of the bogie frame separately from the bogie frame including two front and rear cross beams 14,
6b, 16a and 16b are rigidly attached. The axle box support beams 6, 16 are independent of the left and right side beams 13a, 13b, and are connected between the axle box support beams 6 , 16 and the cross beam 14 of the bogie frame by suspension links 23, and Although it is fixed in the traveling direction, it is configured to be able to move freely in the vertical direction. The driving device 7 interposed between the inner axle boxes 5a is connected to the axle box support beams 6, 1 by the support member 24.
6, the drive device 7 may be supported on a bogie frame.

Claims (1)

[Claims] 1. A pair of independent axles having one wheel mounted thereon are opposed to each other on the same axis, and are moved in opposite directions in the left-right direction to change the wheel interval, thereby enabling direct operation between tracks between different gauges. In the rail-to-rail variable bogie, the four axle boxes slidably fitted with bearings provided at both ends of the left and right independent wheel sets are rigidly supported by one axle box support beam provided in parallel with the independent wheel sets. Characteristic variable bogie between rails for railway vehicles.