JPH0525707B2 - - 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 geometrically shift in angle from the rail in the direction of travel, resulting in 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 deflection between the electric motors 7, 7' and the gear devices 9, 9'. This structure is connected by shaft couplings 10, 10', etc. Therefore, the electric motors 7, 7' and the gearing 9,
The reaction force of the rotating torque 9' is received by the horizontal beams 8, 8'. The axle box bodies 2, 2' are the axle box guards 11,
11' restricts the 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 in FIG. 8, so the vehicle travels while making an angle θ with respect to the center 0 of the curve. As a result, the wheel flange comes into contact with the rail, causing wear on the wheel flange and the rail, and causing squeaking 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, as well as wheel flange wear and squealing noise during curved travel.

[Summary of the invention]

The present invention provides two wheel axles that are installed at the front and rear of a bogie frame with their longitudinal direction aligned in the width direction of the bogie and each end of which is provided with an axle box, and on each axle box of each wheel axle. The bogie frame is comprised of a spring device that elastically supports the bogie frame at the top, and a bogie frame that is supported on the two wheel axles via the spring device, and a gear device is installed at a position near one wheel of each of the axles. , each wheel axle is arranged so that the gear device installation position is symmetrical with respect to the center of the truck, the gear device is supported by the truck frame so as to be rotatable around a vertical axis, and the gear device is In a two-shaft electric bogie for a railway vehicle in which an electric motor is connected via a flexible shaft joint, the axle box at the gear device side end of each wheel axle is installed so as to be restrained longitudinally, horizontally and horizontally with respect to the bogie frame, and The axle box at the end of each wheel axle on the opposite axle box device side is installed so as to allow relative displacement in the front and back and left and right with respect to the bogie frame, and the axle box at the end of the two axles on the opposite axle box device side is installed,
A torsion bar link device whose axial direction is arranged in the width direction of the bogie, and each link of the torsion bar link device and each of the axle boxes are connected via two rods that connect them. It is something.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 3 to 7. In the figure, the same reference numerals as in FIGS. 1 and 2 indicate the same parts.

The movable axle boxes 2, 2' are constructed using spring devices 3, 3' that are configured to allow one of the axle boxes 2, 2' provided at both ends of the wheel axles 1, 1' to move in the front-back and left-right directions.
2' are provided symmetrically on the opposite side of the gear device and are connected via a rod 13, a link 14, a torsion rod 15 and a rubber bush 16. The link 14 is fixedly connected to both ends of the torsion bar 15 and functions as a torsion bar link, and is rotatably supported by the horizontal beam of the bogie frame 4 via a bearing 17. Joint part between link 14 and rod 13 and rod 13
Rubber bushings 16 are provided at the joints of the shaft boxes 2 and 2', respectively.

The other shaft box body 2, 2' provided on the gear device side is
Spring devices 3 and 3' are used to restrain longitudinal and lateral movements by the axle box protector 11 on the bogie frame 4, and as in the conventional structure, they play the role of bearing longitudinal and lateral forces, and at the same time, as shown in Fig. 5. Point A is the location where the steering center of the wheelset 1, 1' becomes. Therefore, the displacement during steering is small since it is centered at point A, and the displacement can be absorbed by the elastic support portions of the gear devices 9, 9' and the flexible shaft joints 10, 10'. In addition,
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' as in the conventional case.

According to such a configuration, while traveling on a curve, the wheelsets 1 and 1' rotate around point A so as to face the center of the curve, as shown in B in FIG. Since the constructed torsion bar link device and the rod 13 restrain the relative movement of the wheel axles 1, 1', there is no difference in angle between the wheel axles 1, 1' with respect to the center of the curve, and therefore the wheel flange does not contact the rail. This prevents wear and tear and prevents squealing noise.

〔Effect of the invention〕

According to the present invention, not only can snake vibration be prevented, but contact between the wheel flange and the rail is eliminated, so there is no wear on the flange and the rail.
This has the effect of preventing the occurrence of squeaking noise.
As a result, maintenance costs for bogies and tracks can be reduced,
Effective in preventing noise pollution.

[Brief explanation of the drawing]

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 present invention, Fig. 4 is a front view of Fig. 3, and Fig. 5 is a front view of the cart of the present invention. FIG. 6 is a plan view showing the main parts, FIG. 6 is a top view of FIG. 3, and FIG. 7 is a plan view showing the positional relationship of the wheel set along a curve. 1, 1'... wheel axle, 3, 3'... spring device, 4...
...Bolly frame, 7,7'...Electric motor, 8,8'...Horizontal beam, 9,9'...Gear device, 13...Rod, 1
4...Link, 15...Torsion rod, 16...Rubber bushing, 17...Bearing, 18...Attenuator, 19...
...Spherical bearing.

Claims (1)

[Scope of Claims] 1. Two wheel axles installed at the front and rear of the bogie frame with their longitudinal direction aligned in the width direction of the bogie, and each of which has an axle box at each end; It consists of a spring device that elastically supports the bogie frame on the axle box, and a bogie frame that is supported on the two wheel axles via the spring device, and a gear device is installed at a position near one of the wheels of each wheel axle. each wheel axle is arranged so that the gear device installation position is a symmetrical position with respect to the center of the truck, the gear device is supported on the truck frame so as to be rotatable around a vertical axis, and In a two-shaft electric bogie for a railway vehicle in which an electric motor is connected to a gear device via a flexible shaft coupling, an axle box at an end of each wheel axle on the gear device side is restrained longitudinally and laterally with respect to the bogie frame, and the axle box at the end of the opposite axle box device side of each wheel axle is installed so as to allow relative displacement in the front and back and left and right with respect to the bogie frame; box,
A torsion bar link device whose axial direction is arranged in the width direction of the bogie, and each link of the torsion bar link device and each of the axle boxes are connected via two rods that connect them. Two-axle electric bogie for railway vehicles.