JPS60191867A - Double spindle electric truck for railway rolling stock - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a two-shaft electric bogie for railway vehicles, and is particularly suitable as a bogie that can run on curves without producing squeaking noise or straight wheel flanges. It is something.

[Invention? ! 'Scenery]

In conventional railway bogies, the axle box is rigidly supported in the longitudinal direction to maintain the parallelism of the two axes, in order to prevent the occurrence of snake vibrations caused by the slope of the wheel tread during running. Ta. For this reason, when traveling on a curve, the wheels geometrically form an angle in the direction of travel with respect to the rails, which has the disadvantage of causing wear of the wheel flanges and generation of grinding noise.

FIGS. 1 and 2 show an example of a conventional bogie, in which a wheel shaft 1.1' supports a bogie frame 4 at both ends via an axle box body 2.2' and a spring device 3.3'. Furthermore, the vehicle body 6 is supported via a pillow spring arrangement w, 5. Electric bowl 7゜7' is flat 8
.
The structure is such that they are connected by a 10% flexible shaft joint between them. Therefore, electric fi7, 7' and gearing M,
The reaction force of the rotating torque of 9 + 9' is received by the horizontal beam 8.8'. The axle box body 2.2' is the axle bridge guard 11 located on the bogie frame 4.
, 11', the front and back and left and right movements are restrained. The rotational torque generated in the electric motor @7, 7' is transferred to the flexible shaft coupling 1.
0.10' and the wheel set 1.1' through the gear system N9,9'.
from the axle box body 2.2' to the axle box guard 11, ll',
Dolly frame 4. It is transmitted to the vehicle body 6 via the anchor 12 of the pillow spring device 5.

While driving on a curve, as shown in Figure 8, the wheel set 1.1'
Since it is restrained by the bogie frame 4, it runs at an angle θ with respect to the center of the curve 0. For this reason, the wheel flange comes into contact with the rail, causing wear of the wheel flange rail and causing grinding noise.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a two-shaft electric bogie for a railway vehicle that prevents the generation of meandering vibrations and also prevents wheel flange wear and squealing noise during one-curve travel.

[Summary of the invention]

The present invention makes it possible to move the rigidity of the axle box support part of the wheel axle in the front and rear and left and right directions in a three-axis electric truck having a parallel cardan type drive device, and also connects the front and rear axle boxes with a connecting beam, a link, etc. Further, the front and rear gear devices are pivotably supported on the bogie frame, so that the wheel axle points toward the radius center of the curve with the pivot support point as the center.

[Embodiments of the invention]

An embodiment of the trolley of the present invention will be described below with reference to FIGS. 3 to 7. In the figure, the same symbols as in Figure @112 indicate the same parts.

A connecting beam 13.1 connects the front and rear of the axle box body 2.2 on one side of the shaft end.
3', link 14, connected via rubber bushing ^15,
The link 14 is rotatably supported by a side beam 16 of the bogie frame. The front and rear axle boxes on the opposite side can be connected in the same way, or as shown in FIG.
．． It is supported by the bogie frame side beams 16 via the connecting beams 13, 13' and rubber bushings j-15. As in the conventional structure, the electric motors 7,7' are bolted symmetrically to the front and rear spines of the horizontal beams 818' of the bogie frame 4, as shown in FIG.

On the other hand, one end of the gear device 19.9' provided on the wheel axle 1.1' is pivot-supported point-symmetrically at the longitudinal position C of the horizontal beam 8.8' of the bogie frame 4.

Details of the pivot support are shown in FIG. Gear system [9,9
As shown in Fig. 6, anti-vibration rubber 19 is attached to the nose 18. It has a structure connected to the burr 8.8', and transfers the longitudinal and lateral forces generated on the wheel shafts 1 and 1' to the gear system v9.9'.
, gear box nose 1g, 1B', anti-vibration rubber 19. The structure is such that the information is transmitted to the bogie frame 4 through a special bottle. Therefore, the axle boxes 2 and 2' are provided with spring devices 3 and 3 that support the bogie frame 4.
There is only 3', there is no axle box guard, and the spring device g3.

It has a structure that allows it to move left and right, and the electric motors 7 and 7', gear system F
The displacement between yt9 and yt9' is relieved by the flexible shaft joints 10 and 10', and the reaction force of the rotational torque is received by the horizontal beam 8°8' as in the conventional structure. PP is a structural part that bears longitudinal and lateral forces at the pivot support point shown in Fig. 6, and enables steering around the pivot support point of the wheel axle.

With the above configuration, the wheel set 1.1' is restrained by the connecting beam 13.13' and the attenuator 17 damps the meandering motion during straight running.

On the other hand, while traveling on a curve, as shown in FIG. Since the relative movement of ' is restrained, the angular difference θ shown by A does not occur between the wheel and the rail.

Figure 9.10 shows front and rear axle boxes 2゜2' instead of connecting beams.
Another embodiment is shown in which torsion bar link devices are used diagonally in between. Links 22 and 22' are individually attached to both ends of the torsion cups 21 and 21' in the center, and the torsion rods 21 and 21' are attached to an axle box so as to be rotatable on the sides 8.8' of the bogie frame. It is supported by 23 and 23'. Axle box body 2
．． Between 2' is Oy 24, 24', rubber bushing m 15
, the front and rear are diagonally connected via links Z2, 22'+torsion rods 21, 21'. therefore',
The configuration of torsion rods 21 and 21' and linear wheels 22 and 221 makes it possible to steer the wheel axles J and 1' while traveling on curves, and the twisting rods 2tt21' and links n and 22 prevent meandering motion while traveling in a straight line. The constructed torsion bar link device has a structure that suppresses wear of the wheel flanges and rails, resulting in the effect of eliminating squeak noise.

[Efficacy of invention]

According to the present invention, not only can snake behavior be prevented, but also $
Since there is no contact between the 0 flange and the rail, there is no wear on the I flange and the rail, which has the effect of alleviating squeaks. This reduces maintenance costs for bogies and tracks, and is also effective in preventing noise pollution.

[Brief explanation of drawings]

fflJ figure is a plan view of the conventional mold, Figure 2 is its front view,
3 is a plan view of an embodiment of the bogie according to the present invention, FIG. 4 is a front view of FIG. 3, FIG. 5 is a cross-sectional view of FIG. 3, and FIG. 6 is a cross-sectional view of FIG. 3. . FIG. 7 is a perspective view of FIG. 3, FIG. 8 is a plan view showing the positional relationship of the wheel axles on a curve, and FIG. A schematic plan view, FIG. 10, is a detailed view of the link device. 1.1... wheel axle, 3.3'... spring device, 4... bogie frame, 7, 7'-1-- electric motor, 8, 8'-- -1 horizontal beam, 9.9...gear system, 13.13'...connection beam, 14...
... Link, 15 - Rubber bushier, 17 ... Attenuator, 18. 18'...Nose, 19...Vibration-proof rubber, 4...Special bottle, 21.21'...
Torsion rod, 22. ? 2'...Link, Z3,
2r...Bearing, 24, 24'...
rod.

Claims (1)

[Claims] 1. An axle box that supports the front and rear wheel axles spaced apart by a certain distance is provided with a spring device that supports vertical loads and is movable in left-right, front-rear, and front-back directions. The front and rear are connected by a connecting beam, the connecting beam is movably supported on the side beam of the bogie frame, and the gear mounts provided on the front and rear wheel axles are symmetrical to the rear side of the bogie frame. A two-shaft electric bogie for a railway vehicle, characterized by being pivot-supported. 2. Scope of claims! In Item 1, a two-shaft electric bogie for railway vehicles that uses a damper in the connecting beam. 3. In claim 1 or 2. A two-shaft electric bogie for railway vehicles that uses a torsion bar link device for the connecting beam.