JPS59230859A - 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 bogie for a railway vehicle, and in particular, when a bogie having a drive device runs on a curved track, there is a This invention relates to a bogie for a railway vehicle that generates a yawing motion so that the wheel axle always follows a curve and points in the radial direction.

[Background of the invention]

Most of the bogies for railway vehicles that are currently in practical use have a type bogie frame (1 yellow bar and 1 pair of side bars 9), and the wheel axles arranged at the front and rear are independently attached to the bogie frame. On the other hand, it is relatively firmly elastically connected in the longitudinal direction (vehicle traveling direction) and in the lateral direction, and is called a non-steering bogie.In this type of bogie, when the vehicle runs on a straight track, However, when traveling on a curved track, the 7-rank surface of the wheel contacts the inside of the rail head of the track, which may accelerate wear of the wheel 7272 part and the rail head, and cause sideways damage. There were drawbacks such as the generation of squeaking noise due to the increase in pressure, and the risk of running over and derailing (1), which impeded speed improvement on curved roads.

On the other hand, the direction of the front and rear wheel axles is arbitrarily biased according to the degree of curvature of the curved road by utilizing the restoring effect caused by the contact between the worn-out shape tread of the wheel or the compound circular arc-shaped tread and the rail contact part, Various railway vehicle bogies called steering bogies have been proposed in which the traveling direction of the wheels automatically matches the traveling direction of a curved track. Most of these steering bogies have left and right axle boxes of the wheel axles connected by strong steering arms, and are also equipped with an interconnection device for adjusting the front and rear wheel axles to the degree of curvature of a curved road.

Therefore, compared to conventional non-steering carts, the unsprung weight (weight on the rail side from the shaft spring) is greater due to the provision of steering arms, and the dynamic wheel load tends to increase during high-speed running. shows. In addition, in order to apply the present invention to a drive truck equipped with a main electric motor and a gear device, it is necessary to provide sufficient space between the H-shaped truck frame and the wheel axle.

[Purpose of the invention]

The present invention automatically aligns the traveling direction of a wheel axle running on a curved track with the traveling direction of the curved track, thereby reducing wear on rails and wheel flanges, reducing noise, and driving on curved roads. The object of the present invention is to provide a bogie for railway vehicles that improves safety and speed and can also be applied to a drive bogie equipped with a drive device such as a main electric motor or a gear device.

[Summary of the invention]

In the present invention, links are provided projecting from the axle boxes of a pair of wheel axles disposed at the front and rear of the bogie frame, each extending near the front and rear center of the bogie frame and rotatable in a vertical plane, and the ends of the links on the center side of the bogie frame In addition to rotatably connecting the wheels, the connecting portion can be slid in the left and right directions of the bogie frame to expand and shorten the distance between the front and rear axle boxes on curved roads, allowing each wheel axle to automatically align with the curved track. It is characterized by being configured as follows.

[Embodiments of the invention]

The present invention will be explained in detail below based on the drawings showing one embodiment.

FIG. 1 is a front view of the main parts of an embodiment of the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is a plan view of the main parts of FIG. 2 with the truck frame removed. 4 is a cross-sectional view taken along the line A-A in FIG. 3, and FIG. 5 is a cross-sectional view taken along the line B-B in FIG. 4 is a pair of front and rear wheel axles, and 5 is a drive device which is composed of a gear device 6, a main electric motor 7, a flexible joint 8, etc. Further, reference numeral 9 denotes an axle box rotatably provided at both left and right ends of the wheel axle 4, and the bogie frame 2 is supported by an axle box support device 10 in the vertical, longitudinal, and horizontal directions (each direction is shown in FIG. The vehicle is elastically supported by the vehicle (determined as shown in the figure), and the vehicle as a whole forms a known bolster-less electric vehicle. The present invention is also effective.

On the other hand, as shown in detail in Fig. 3, the steering device 11 is provided with a bracket 12 on each axle box 9 at both left and right ends of a wheel axle 4.4 disposed in the longitudinal direction of the vehicle.
A link 13 that rotates in a vertical plane (a plane perpendicular to the vertical direction) and extends toward the center of the truck is connected to the carriage 2 by a pin 14.

The other end of the link 13 is connected to both ends of the sliding body 15 by a pin 16 so as to be rotatable in a vertical plane, thereby forming a steering device 11 that interconnects the longitudinal axle boxes 9 of the seven vehicles as a whole. are doing. Further, the sliding body 15 is supported by the truck frame 2 so as to be movable in the left-right direction of the truck. Note that the above-mentioned rudder removal device t11 has the same effect whether it is installed on either the left or right side of the cart 2 or on both sides, but if it is installed on both the left and right sides and connects the left and right sliding bodies 15,
A remarkable effect can be achieved by connecting the left and right axle boxes at 7 so that the distance in the longitudinal direction between the left and right axle boxes can be relatively expanded and contracted.

On the other hand, a cylindrical anti-vibration rubber 18 is interposed between the bracket 12 and the link 13 of each axle box 9 as shown in FIG.
Since it is separated from the unsprung parts such as the wheel axle 4 and the axle box 9 through the l, the increase in unsprung weight is slight and an increase in dynamic wheel load during high-speed driving can be prevented. Father, link 13 and sliding body 1
As shown in Fig. 4, the connecting part between C and C is used to allow vertical displacement of the wheel using spherical bushes 19, etc., as shown in Fig. 4, thereby restraining the rolling of the vehicle T*1ilII4 and preventing the wheel from unloading. I can do it.

Furthermore, in the embodiment of the present invention, as shown in detail in FIG.
An outer cylinder 21 for elastically coupling the axle box 9 to the bogie frame 2 in the vertical, longitudinal, and lateral directions with an axle spring 20 for allowing vertical displacement between the axle box 9 and the bogie frame 2; , inner cylinder 2
2 and anti-vibration rubber 23 to form a cylindrical guide type axle box support, H6 position 10 as a whole.
Keep it as small and clear as possible.

For example, as shown in FIG.
By providing a clearance ΔX in the front-rear direction between the anti-vibration rubber 23 and the inner cylinder 22, the rigidity in the front-rear direction can be made sufficiently small within the range of the relative displacement ΔX due to the yawing movement of the wheel shaft. Note that the axle box support device 10 is not limited to this embodiment, and can be applied to any axle box support device. Next, the mode of the railway vehicle bogie having the above structure on a curved 1vL road will be explained with reference to FIG. Consistent with Figure 6, when the bogie of the present invention runs on the outer rail FLt and the inner rail R2 of the curved track, the wheel axle 4 at the front in the traveling direction has a wear-shaped tread of the wheel or a compound conical tread and the rail. The degree of curvature of the curved road is affected by the restoring action caused by contact with the contact part [6
(In FIG. 6, the outer rail Rr side widens by ψ from the parallel line of the bogie center line Y-Y.) At this time, the link 13 is on the outer rail LLt! The sliding body 15 and the connecting beam 17, which are rotated toward JIII and are rotatably coupled to the link 13, are also connected to the outer rail Rt.
Move in parallel from side to side. On the other hand, the wheel axle 4 on the rear axle side is deflected by ψ in the opposite direction from the front axle side by the link 13, and the distance between the axle boxes on the outer rail FLI side increases 9, and the axle box on the inner rail R2 side increases. The distance between the front and rear wheel axles 4-
4 can advance automatically in accordance with a curved trajectory, resulting in the following effects.

(1) Lateral pressure is reduced, reducing the risk of derailment.

(2) Abrasion of rails and wheels is reduced, resulting in longer service life and longer maintenance cycles, as well as improved running safety.

(3) Squeak noise on curved roads is reduced, resulting in low pollution.

(4) From the above, speed improvement on curved roads can be expected, and in addition to being able to run on curved roads with a small radius, running resistance on curved roads is reduced, so more energy-saving driving can be achieved.

Furthermore, the steering device of the present invention not only minimizes the increase in unsprung weight, but also has excellent effects such as being fully applicable to drive trucks equipped with main motors and gear devices. Shoulders.

In this embodiment, a cylindrical vibration isolating rubber 18 is provided on the axle box 9 side of the link 13, and a spherical bushing 19 is provided on the sliding body 15 side, but due to the clearance between the pins 14 and 16, These may not be safe. Also, both sides can be made of spherical bushings or both sides can be made of cylindrical anti-vibration rubber.
It is also possible to employ elastic coupling methods other than cylindrical anti-vibration rubber. If no anti-vibration rubber is provided on the side of the axle box 9, the effect of reducing the unsprung weight will be reduced, but the effect of curved steering will be the same.

Furthermore, as shown in another embodiment of the present invention shown in FIG. It is also possible to improve the action prevention effect, and by installing an elastic body (not shown) in place of the damping device 24, or installing both a damping device and an elastic body, the axle box support device can be improved. It is possible to optimize the longitudinal and lateral rigidity necessary for curve passage performance and prevention of snake movement by combining with the longitudinal and lateral rigidity of io. .

〔Effect of the invention〕

As detailed above, according to the present invention, the steering device 1
By installing 1, the longitudinal distance between the left and right axle boxes in the direction of travel is automatically expanded or contracted, and the front and rear wheel axles can be automatically aligned with the curved track, reducing wear on the rails and wheel flanges, reducing noise, and It is possible to improve running safety and speed, including on curved roads, and since the steering device 11 is configured along the bottom surface of the bogie frame 2, which is made up of side beams, side beams, etc., the main motor and gears It has excellent effects such as being applicable to a drive truck on which the device is mounted.

[Brief explanation of the drawing]

Fig. 1 is a front view of the main part showing one embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a plan view of the main part of Fig. 2 with the bogie frame removed, and Fig. 4 is a 5 is a sectional view taken along line A--A in the figure, and FIG. 5 is a sectional view taken along line B-2B in FIG. 4. Further, FIG. 6 is a plan view of a main part showing an aspect of the present invention when traveling on a curved track, and FIG. 7 is a plan view of a main part showing another embodiment of the present invention. 1... Vehicle body, 2... Bogie frame, 3... Air spring,
4... Wheel axle, 5... Drive device, 6... Gear device, 7... Main electric motor, ε... Flexible joint, 9... Axle box, 10... Axle box support Device, 11... Steering device,
12...Bracket, 13...Link, 14...
Pin, 15...Sliding body, 1G...Pin, 17...
Connecting piece, 18... Cylindrical anti-vibration rubber, 19... Spherical bushing, 20... Axial spring, 21... Outer cylinder, 22...
... Inner cylinder, 23 ... Vibration isolating rubber, 24 ... Damping device,
R1...outer rail, R12...inner rail = A, Y-Y
・・・Bogie industry I Figure □--□--------Smalling Figure 2 Figure 3

Claims (1)

[Scope of Claims] 1° is supported by a pair of 1PIII bearings, and
In a bogie for a railway vehicle consisting of two pairs of wheel axles disposed in the traveling direction) and a bogie frame in which each of the bearings is elastically coupled in the vertical, longitudinal, and horizontal directions, the axle box of the wheel axle is A link is provided extending from at least one pair of arranged axle boxes to the vicinity of the front and back center of the bogie frame, and rotatable in a vertical plane (a plane perpendicular to the vertical direction), and the center of the bogie frame of the link is provided. A swivel device configured to rotatably connect side end portions to each other and to make the connecting portion movable in the left-right direction of the bogie frame so that the distance between the front and rear axles can be expanded or contracted on a curved road. A bogie for a railway vehicle, which is equipped with the following features and is configured so that each wheel axle can travel in alignment with a curved track. 2. A patent claim characterized in that the steering device is provided on both the left and right sides of the vehicle, and the front and rear axle boxes are connected to each other, and the connecting parts are connected together by a joint. A railway vehicle bogie according to item 1. 3. A railway vehicle according to claims 1 and 2, characterized in that an elastic body such as cylindrical anti-vibration rubber is used in the portion where the link of the steering device is supported by each bearing. Dolly. 4. A bogie for a railway vehicle according to claims 1 and 2, characterized in that a spherical bushing is used for a portion that connects the links of the steering device and is rotatably supported. 5. A damping device or an elastic body or both are provided in the part or joint that connects the links in the rudder multiplication device.