JPS581406Y2 - Traction device for railway vehicles - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a traction device for a bolsterless type bogie. Specifically, one end is attached to the bogie side through an elastic material such as rubber, and the other end is attached to the vehicle body through a similar elastic material. This invention relates to an improvement in a traction device consisting of a pair of side-mounted link rods.

Conventionally, in a bogie using air springs, when the bogie is driven, a swing pillow pivotably attached to the horizontal sill of the bogie frame is used as a device for towing the car body supported on the air spring of the bogie. A towing device comprising a bolster anchor that connects this swinging pillow and a vehicle body is well known.

Such a traction device is not desirable in terms of reducing the weight of the vehicle because it requires a relatively large swinging pillow between the truck and the vehicle body, and in terms of maintenance because it has a relatively complicated structure.

For this reason, various traction devices have been developed in the past that eliminate the swing pillow interposed between the bogie and the vehicle body.

Vehicles having this type of traction device are generally referred to as a bolsterless type.

The present invention is directed to an improvement in a towing device for a bolsterless bogie, which tows the vehicle body by a pair of links provided between the vehicle body and the bogie.

This type of traction device includes a shaft fixed to the vehicle body and extending downwardly, and a tuning member receiving the shaft.

This tuning member includes a pair of arm portions that extend in the left-right direction of the truck in point symmetry with respect to the axis of the mandrel.

This towing device further has a pair of link rods, one end of each of the links is attached to each arm portion via an elastic material such as rubber, and the other end is
In this case, the pair of link rods, which are attached to the trolley side via an elastic material such as rubber, are arranged so as to be almost parallel in the front-rear direction of the trolley, and the attachment part of one link to the trolley side and the other The attachment part of the link to the bogie side is made to be point symmetrical with respect to the axis of the axle of the car body.In such a conventional traction device, when the bogie is driven, the pair of links The vehicle body is towed by the links, and relative displacement in the horizontal and vertical directions between the truck and the vehicle body is allowed by elastic materials such as rubber at the attachment portions of each of the pair of links.

By the way, in this type of towing device, as mentioned above, relative displacement between the bogie and the car body is allowed by interposing an elastic material such as rubber in the attachment part of the link rod. The problem arises in that there are.

That is, when an elastic material such as rubber undergoes changes over time such as wear and deterioration, a problem arises in that the running performance of the vehicle deteriorates.

In addition, in order to prevent this deterioration in running performance, it is necessary to periodically replace the elastic material such as rubber of the attachment portion of the link, which is undesirable in terms of maintenance and maintenance.

The purpose of the present invention is to eliminate these drawbacks of conventional auxiliary devices.

According to the present invention, the pair of links in this conventional traction subsystem are replaced by a pair of leaf springs.

Since this leaf spring is attached so that it can be bent in the horizontal direction of the truck, it is possible to eliminate elastic materials such as rubber, which are required in conventional traction sub-devices to allow relative displacement between the truck and the car body. can.

The above-mentioned disadvantages of conventional traction sub-devices including a pair of links are thus overcome.

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 designates a partially illustrated truck frame.

The truck frame 1 has horizontal beams 2 and 3 extending in the left-right direction.

In FIG. 2, the vehicle body 4 is partially illustrated and has an axle 5 fixed thereto.

The traction sub-device according to the present invention includes a mandrel 5 and a tuning member 6 which receives the mandrel 5 so as to be rotatable and slidable up and down.

The tuning member 6 includes a pair of arm portions 7 and 8 that extend in the left-right direction in point symmetry with respect to the axis of the mandrel 5 .

The traction device further includes a pair of blades 9 and 10.

One end of the leaf spring 9 is pivoted to the end of the arm portion 7 of the tuning member 6, and the other end is pivoted to a bracket 11 fixed to the horizontal beam 3 of the bogie frame 1.

Similarly, one end of the leaf spring 10 is pivoted to the end of the arm portion 8, and the other end is pivoted to a bracket 12 fixed to the cross beam 2.

As is clear from FIGS. 1 and 2, the leaf springs 9 and 10 are attached so that they can be bent in the left-right direction of the truck.

Further, the plate spring can be rotated around an axis in the left and right direction at each pivot portion thereof.

For this reason, the towing sub-device is designed to allow relative displacement between the truck and the vehicle body in the horizontal and vertical directions.

Note that the corresponding shaft attachment portions of the double-shaft cover portions of the leaf spring 9 and the double-shaft lid portions of the leaf spring 10 are point-symmetrical with respect to the axis of the mandrel 5.

FIG. 3 shows another embodiment of the sub-assembly of the present invention.

In this example, in order to increase the buckling load of the leaf spring,
This embodiment is similar to the previously described embodiments, except that a heavy-duty leaf spring is used.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention. FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1. FIG. 3 is a plan view showing another embodiment of the present invention. 5... Mandrel, 6... Toning member, 7, 8... Arm portion, 9.10... Leaf spring.

Claims (1)

[Scope of utility model registration request] A traction device provided between a bogie and a car body in a bolsterless bogie car, comprising a shaft fixed to the car body and extending downward, and a toning member receiving the shaft so as to be rotatable and slidable up and down. The tonal member is composed of:
A pair of arm portions are provided which extend in the left-right direction of the truck in point symmetry with respect to the axis of the mandrel, and further, one end is pivotally attached to each end of the arm portion, and the other end is pivotally attached to the truck side. a pair of leaf springs, and a corresponding shaft attachment portion between the double shaft cover portion of the one leaf spring and the double shaft cover portion of the other leaf spring,
The traction device for a railway vehicle is point symmetrical with respect to the axis of the mandrel, and the leaf spring is rotatable around the left and right axis at its shaft attachment portion.