JPH11198809A - Truck for railroad rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the weight and cost of a truck by reducing the strength of a truck frame and minifying the truck frame and simplifying its structure. SOLUTION: Two axles 9, 9 are supported rotatably by a bracket 6 provided on a truck frame 4 through a vibration prevention joint 5 and respective axle boxes 10 for supporting both ends of two axles 9, 9 rotatably are directly joined with a car body by a spring device consisting of a coil spring 14 and vibration prevention rubber. Further, the front/rear axle boxes 10, 10 are joined by a rod 17 through a vibration prevention joint 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a bogie for a railway vehicle.

[0002]

2. Description of the Related Art Conventionally, a bogie for a railway vehicle having two axles in one bogie frame has rotatably supported both ends of each axle by an axle box, and a shaft is provided between each axle box and the bogie frame. In general, a spring device is provided, and a pillow spring device is provided between the vehicle body and the bogie frame.

[0003]

However, in this structure, the bogie frame between the pillow spring device and the shaft spring device requires the highest strength in order to support the vertical load of the vehicle body.
The bogie frame is large and the structure is complicated, which causes the weight and cost of the bogie to increase. Further, in the bogie provided with the driving motor, the bogie frame requires more strength because the bogie frame bears the load and rotational reaction force of the driving motor and the rotational reaction force of the driving reduction gear.

Accordingly, an object of the present invention is to provide a bogie for a railway vehicle in which the strength of the bogie frame is reduced, the bogie frame is reduced in size and the structure is simplified, and the weight and cost of the bogie are reduced.

[0005]

In order to achieve the above-mentioned object, a railway vehicle bogie according to the present invention has two axles in one bogie frame, and both ends of each axle can be rotated by an axle box. The truck according to claim 1, wherein each of the axle boxes and the vehicle body are directly connected by a spring device. In the means of claim 2, the spring device comprises a coil spring and a coil spring. According to a third aspect of the present invention, the front and rear axle boxes are connected to each other by a rod via a vibration isolating joint. The vehicle of claim 5, wherein the bogie frame is rotatably supported by a bracket provided via a vibration isolating joint, wherein the vertical beam of the bogie frame extends outward in the vehicle width direction. Fix the brake beam that comes out, and Characterized in that a key device, the means of claim 6, is characterized in that a braking device to crossbeam of the bogie frame.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail based on embodiments shown in the drawings. FIGS. 1 and 2 show a first embodiment in which the present invention is applied to a driving bogie. A driving bogie 1 includes longitudinal beams 2 arranged in the vehicle longitudinal direction.
2 and the transverse beams 3, 3 arranged in the width direction of the vehicle body and connected to the longitudinal beams 2, 2 constitute a bogie frame 4, and are provided before and after the longitudinal beams 2, 2 via anti-vibration joints 5, respectively. The outer cylinder of the electric motors 7, 7 is supported by the bracket 6. Electric motor 7,
Numeral 7 directly drives the axles 9, 9 having wheels 8, 8, respectively. Both ends of the axles 9, 9 are rotatably supported by axle boxes 10, 10, respectively.

The bogie frame 4 and the vehicle body 11 are connected by a single link 13 to a center pin 12 and a cross beam 3 of the vehicle body 11, and each of the axle boxes 10 and the vehicle body 11 are connected to a coil spring 14 and an anti-vibration rubber 1
5, the front and rear axle boxes 10, 10 are connected to each other through a vibration isolating joint 16 by a rod 17
Are connected by A brake beam 18 extending outward in the vehicle width direction is fixed to each of the vertical beams 2, 2, and a tread pressing type brake device 1 is attached to each brake beam 18.
9 and 19 are provided. The brake devices 19, 1
9 may be a disc brake.

[0008] The drive truck 1 thus configured supports the vehicle body 11 with the coil spring 14 and the vibration-proof rubber 15 provided on each axle box 10, and the vertical vibration is reduced by the coil spring 14.
The vertical movement damper 20 provided in parallel in the inside is used, and the coil spring 1 is connected to the rod 17 connecting the front and rear axle boxes 10.
4 to prevent falling. Further, the restraint of the axles 9 and 9 in the front-rear direction and the burden of the rotational reaction force of the electric motor 7
The horizontal beams 2 and 2 are restrained in the left and right directions by horizontal beams 3 and 3, and the axles 9 and 9 can be displaced in the roll direction by vibration isolating joints 5 and 5, The wheels 8, 8 and the axles 9, 9 can follow the level change.

The trolley 1 and the vehicle body 11 transmit a traction force and a braking force via a center pin 12 and a single link 13, and
1 allows the drive bogie 1 to move left and right and to turn.
The lateral movement of the driving bogie 1 with respect to the vehicle body 11 is restricted by the center pin 12 and the stopper 21 installed inside the vertical beams 2, 2, and the lateral movement is attenuated by the lateral movement provided between the vertical beam 2 and the vehicle body 11. The right and left rigidity is set by the damper 22, and the elasticity of the coil spring 14 and the elastic spring 23 provided between the vertical beam 2 and the vehicle body 11 is adjusted.
To bear. The center of turning of the driving bogie 1 with respect to the vehicle body 11 is the joint between the cross beam 3 and the single link 13, and the coil spring 14 bears the turning displacement and turning rigidity. The brake reaction force is
The brake beams 18 fixed to the vertical beams 2 and 2 bear the burden.

FIG. 3 and FIG. 4 show a second embodiment in which the present invention is applied to an accompanying truck. The accompanying truck 30 is different from the aforementioned truck 1 in that it has no electric motor. The axle 9 is rotatably supported via a bearing 32 by a bracket 31 provided on the front and rear through a vibration isolating joint 5, and the braking force is insufficient due to the absence of the electric motor. Caliper to axle 9
, A brake disk is provided, and other configurations are the same as those of the bogie 1. Therefore, the same reference numerals are given and the description is omitted.

By configuring the driving carriage 1 and the auxiliary carriage 30 in this manner, the vertical load of the vehicle body 11 can be supported by the coil spring 14 without using a pillow spring device, so that the bogie frame 4 and the coil spring 14 are connected. No need,
The bogie frame 4 only needs to keep the two axles 9 and 9 parallel, support the torque reaction force and the braking force of the electric motor, and transmit only the traction force and the braking force between the axles 9 and 9 and the vehicle body 11. By reducing the strength of the frame 4 and making the bogie frame 4 small and simple, the weight and cost of the driving bogie 1 and the associated bogie 30 can be reduced. Further, by using the electric motor 7 for directly driving the axle 9 as in the first embodiment, the drive reduction device can be eliminated, and the load borne by the bogie frame 4 is reduced. Can be reduced.

[0012]

As described above, in the bogie for a railway vehicle according to the present invention, each axle box rotatably supporting both ends of two axles provided on the bogie frame and the vehicle body are directly connected by a spring device. Therefore, since the vertical load of the vehicle body can be supported by the spring device without using the pillow spring device, there is no need to connect the bogie frame and the spring device, and the bogie frame keeps the two axles parallel, and Since only the tractive force and the braking force between the vehicle bodies need to be transmitted, the strength of the bogie frame can be reduced, and the bogie frame can be made small and simple in structure to reduce the weight and cost of the bogie.

[0013] Further, by constituting the spring device with a coil spring and an anti-vibration rubber, it is possible to flexibly cope with the inclination of the spring, and furthermore, by connecting the front and rear axle boxes with a rod via an anti-vibration joint. To prevent the coil spring from overturning. In addition, the axle can be displaced in the roll direction by the anti-vibration joint by rotatably supporting the axle to the bogie frame with a bracket provided via an anti-vibration joint. Can follow.

Further, a brake beam extending outward in the vehicle width direction is fixed to a vertical beam of the bogie frame, and a brake device is provided on the brake beam, so that a brake reaction force is borne by the brake beam. In addition, by providing the brake device on the cross beam of the bogie frame, the braking force of the associated bogie with insufficient braking force can be improved due to the absence of the electric motor.

[Brief description of the drawings]

FIG. 1 is a plan view of a driving bogie showing a first embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view of an accompanying truck showing a second embodiment of the present invention.

FIG. 4 is a side view of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Driving bogie, 2 ... Vertical beam, 3 ... Horizontal beam, 4 ... Bogie frame, 5 ...
Vibration-proof joint, 6 ... Bracket, 7 ... Electric motor, 8 ... Wheel, 9 ... Axle, 10 ... Axle box, 11 ... Car body, 12 ... Center pin, 13 ... Single link, 14 ... Coil spring, 15 ... Vibration-proof rubber, 16: anti-vibration joint, 17: rod, 18: brake beam, 19: brake device, 30: accompanying truck, 31
... Bracket, 32 ... Bearing, 33 ... Disc brake device

Claims (6)

[Claims] 1. A railway vehicle bogie having two axles in one bogie frame and rotatably supporting both ends of each axle with an axle box, wherein each of the axle boxes is directly connected to a vehicle body by a spring device. A bogie for a railway vehicle, wherein the bogie is combined. 2. The bogie for a railway vehicle according to claim 1, wherein said spring device is constituted by a coil spring and a vibration isolating rubber. 3. The bogie for a railway vehicle according to claim 1, wherein the front and rear axle boxes are connected by a rod via an anti-vibration joint. 4. The vehicle according to claim 1, wherein the axle is rotatably supported by a bracket provided on the bogie frame via an anti-vibration joint. A bogie for railway vehicles. 5. A brake beam extending outward in the vehicle width direction is fixed to a vertical beam of the bogie frame, and a brake device is provided on the brake beam. 4. The bogie for a railway vehicle according to any one of 4. 6. The bogie for a railway vehicle according to claim 1, wherein a brake device is provided on a cross beam of the bogie frame.