JPH0377104B2 - - Google Patents

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 direct friction of wheel flanges. It is.

[Background of the invention]

In order to prevent the occurrence of snake motion vibration caused by the slope of the tread of the wheels during running, conventional bogies for railway vehicles have
In order to maintain the parallelism of the two axes, the axle box was rigidly supported in the front and rear directions. For this reason, when traveling on a curve, the wheels are geometrically angularly misaligned with respect to the rail in the direction of travel, 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 wheel axles 1 and 1' support a bogie frame 4 at both ends via axle boxes 2 and 2' and spring devices 3 and 3'. Furthermore, the vehicle body 6 is supported via a pillow spring device 5.
The electric motors 7, 7' are fixed to the horizontal beams 8, 8', the gear devices 9, 9' are elastically connected to the horizontal beams 8, 8', and there is a gap between the electric motors 7, 7' and the gear devices 9, 9'. This is a structure in which they are connected by shaft couplings 10, 10, etc. Therefore, the reaction force of the rotational torque of the electric motors 7, 7' and the gear devices 9, 9' is received by the horizontal beams 8, 8'. The axle box bodies 2, 2' are the axle box guards 11, 1 located on the bogie frame 4.
1' restricts movement back and forth and left and right.
The rotational torque generated in the electric motors 7, 7' is transmitted to the wheel axles 1, 1' via the flexible shaft couplings 10, 10' and the gear devices 9, 9', and is transmitted from the axle boxes 2, 2' to the axle box guards 11, 11. ', is transmitted to the vehicle body 6 via the bogie frame 4 and the anchor 12 of the pillow spring device 5.

While traveling on a curve, the wheel sets 1 and 1' are restrained by the bogie frame 4, as shown in A of FIG. 8, so the vehicle travels while forming an angle θ with respect to the center 0 of the curve. Therefore, the wheel flange comes into contact with the rail, causing wear of the wheel flange rail and causing squeaking noise.

[Purpose of the invention]

The purpose of the present invention is to have a simple structure,
Another object of the present invention is to provide a two-shaft electric bogie for a railway vehicle that can prevent the bogie from meandering and prevent the above-mentioned problems that occur when traveling on curves.

[Summary of the invention]

The present invention has a pair of wheel axles disposed at the front and rear of a bogie, and an axle box provided on the wheel axles supports vertical loads with respect to the bogie frame, and at least supports longitudinal loads through spring means. The axle boxes of each wheel axle are connected by connecting beams so that the behavior of the front and back of the bogie with respect to the center of the bogie is the same, and the gear means provided on each wheel axle is attached to the side of the bogie frame. Point symmetrically to the beam with respect to the center of the trolley, and
It is characterized by being pivotally supported so that longitudinal force can be transmitted.

[Embodiments of the invention]

An embodiment of the trolley of the present invention is shown in Figs. 3 to 7 below.
This will be explained using figures. In the figure, the same reference numerals as in FIGS. 1 and 2 indicate the same parts.

The front and rear axle boxes 2, 2 on one side of the shaft end are connected via connecting beams 13, 13', a link 14, and a rubber bush 15, and the link 14 is rotatably attached to a side beam 16 of the bogie frame. To support. The front and rear axle boxes on the opposite side may be connected in the same way, or the attenuator 17, connecting beam 13,
13', bogie frame side beam 16 via rubber bushing 15
support. The electric motors 7 and 7' have the same structure as the conventional structure.
As shown in FIG. 5, bolts are bolted symmetrically to the front and rear positions of the horizontal beams 8, 8' of the bogie frame 4. On the other hand, one end of the gear device 9, 9' provided on the wheel axle 1, 1' is pivotally supported at the front and rear positions of the horizontal beams 8, 8' of the bogie frame 4 in a point-symmetrical manner.

Details of the pivot support are shown in FIG. As shown in FIG. 6, the gear devices 9, 9 have anti-vibration rubber 19 attached to the upper and lower surfaces and holes of the noses 18, 18' of the gear box, and a special anti-vibration rubber 19 is attached to the noses 18, 18' and the anti-vibration rubber 19. Insert pin 20 and horizontal beam 8,
8', and the longitudinal force and lateral force generated on the wheel sets 1 and 1' are transmitted through the gear devices 9 and 9', the gear box noses 18 and 18', the anti-vibration rubber 19, and the special pin 20. The structure is such that the information is transmitted to the bogie frame 4. Therefore, the axle box bodies 2, 2' only have spring devices 3, 3' that support the bogie frame 4, and there is no axle box guard.
It has a structure that allows it to move back and forth and left and right depending on the lateral rigidity of the spring devices 3 and 3', and the displacement between the electric motors 7 and 7' and the gear devices 9 and 9' is escaped by the flexible shaft joints 10 and 10', and the rotational torque is The reaction force is received by the horizontal beams 8, 8' as in the conventional structure. The difference is that the longitudinal and lateral forces are borne by the pivot support point shown in Figure 6.
This is a structural part that allows the wheel axle to be steered around the pivot support point.

With the above structure, the wheel sets 1 and 1' are restrained by the connecting beams 13 and 13', and the attenuator 17 damps the meandering motion during straight running.

On the other hand, while driving on a curve, as shown in B in Figure 8,
Since the wheel sets 1 and 1' rotate around the special pin 20 so as to face the center of the curve, and the relative movement of the wheel sets 1 and 1' is restrained by the connecting beams 13 and 13', there is a gap between the wheels and the rails, as shown by A. No angular difference θ occurs.

9 and 10 show another embodiment in which a torsion bar link device is used diagonally between the front and rear axle boxes 2, 2' instead of the connecting beam. Links 22, 22' are fixed to both ends of the torsion rods 21, 21' in the center, and the torsion rods 21, 21' are rotatably attached to the axle boxes 23, 23, 22' to the horizontal beams 8, 8' of the bogie frame. 23'. Between the axle boxes 2 and 2' is a rod 24,
24', rubber bushing 15, links 22, 22', and torsion rods 21, 21'. Therefore, the torsion rods 21, 21'
The configuration of the and links 22, 22' makes it possible to steer the wheelsets 1, 1' while traveling in a curve, and torsion rods 21, 21' and link 2 to prevent the meandering motion while traveling in a straight line.
The torsion bar link device composed of 2 and 22' has a suppressing structure, which eliminates wear of the wheel flange and rail, and produces the effect of eliminating squealing noise.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to prevent the meandering motion when the bogie runs in a straight line, prevent wear of the wheel flanges and rails, and transmit longitudinal force through gear means. Therefore, the structure can be simplified.

[Brief explanation of drawings]

Fig. 1 is a plan view of a conventional cart, Fig. 2 is a front view thereof, Fig. 3 is a plan view of an embodiment of the cart according to the present invention, Fig. 4 is a front view of Fig. 3, and Fig. 5 is a front view of the cart. 3 is a cross-sectional view along A--A in Figure 3, Figure 6 is a cross-sectional view along E-A in Figure 3, Figure 7 is a perspective view along Figure 3, and Figure 8 is a plane showing the positional relationship of the wheelsets on a curved line. 9 is a schematic plan view of another embodiment of the present invention using a torsion bar link device, and FIG. 10 is a detailed view of the link device. 1, 1... wheel axle, 3, 3'... spring device, 4...
...Bolly frame, 7,7'...Electric motor, 8,8'...Horizontal beam, 9,9...Gear device, 13,13'...Connection beam, 14...Link, 15...Rubber bushing, 17
...Attenuator, 18, 18'...Nose, 19...
Anti-vibration rubber, 20... Special pin, 21, 21'...
Torsion rod, 22, 22'... link, 23, 2
3'... Bearing, 24, 24'... Rod.

Claims (1)

[Scope of Claims] 1. A pair of wheel axles disposed at the front and rear of the bogie, the axle box provided on the wheel axle supporting the vertical load with respect to the bogie frame, and a spring that allows at least the longitudinal load. installed on the bogie frame via means, and connecting the axle boxes of each wheel axle with a connecting beam so that the behavior with respect to the center of the bogie in the longitudinal direction of the bogie is the same between the front and rear of the bogie,
A two-shaft electric bogie for a railway vehicle, characterized in that gear means provided on each wheel axle are pivotally supported on a bogie frame side beam in point symmetry with respect to the center of the bogie and capable of transmitting longitudinal force. 2. The two-shaft electric bogie for a railway vehicle according to claim 1, characterized in that the connecting beam is provided with a damper that damps displacement between the front and rear wheel axles. 3. A two-shaft electric bogie for a railway vehicle according to claim 1, characterized in that a torsion bar link means is used as the connecting beam.