JPS637988B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle body support device for a bolster-less type bogie that uses a pillow spring capable of large lateral displacement to directly connect a vehicle body and a bogie frame with the pillow spring.

An embodiment according to the prior art is shown in FIGS. 1 to 4. Fig. 1 is a side view of the truck, Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is a sectional view taken along line B-B in Fig. 2, and Fig. 4 is a sectional view taken along line C-C in Fig. 3. It is.

The vehicle body 6 is supported by a bogie frame 4 via an air spring 5, and the bogie frame 4 is supported by an axle box body 2 provided at both ends of the wheel axle 1 via an axle spring 3. A center pin 7 attached to the vehicle body 6 is fitted into a center pin receiver 11 via a bush 15. The bush 15 is provided with a collar and is tightened with a nut 13 via a presser foot 12, so that it can only move up and down by the amount of clearance between the sliding parts. When the truck passes through a curve, the center pin 7 and the bush 15 slip and the truck rotates around the center pin 7.

The longitudinal force applied to the center pin 7 is transmitted to the bogie frame 4 by two links 9 extending in the longitudinal direction and having one end attached to the link receiver 14 and the other end attached to the center pin receiver 11. Rubber bushes 10 are attached to both ends of the link 9, which alleviates longitudinal vibration and allows the link 9 to move vertically and horizontally relative to the vehicle body 6 and the bogie frame 4.
It plays the role of absorbing the strain caused by the inclination of the Note that a stopper rubber 8 is provided at a position in the left-right direction of the center pin 7 of the bogie frame 4.

The above-mentioned structure of the bolster-less bogie has already been used in the German National Railways' ET420 train.

In the case of the above-mentioned known technology, since the rotational movement of the center pin 7 and the center pin receiver 11 escapes from the bush 15 by sliding between the center pin 7, the bush 1
5 and the center pin 7, and when the center pin receiver 11 is shaken by vibration while the vehicle is running, it will rattle by the amount of the gap, and the vibration noise will be directly transmitted to the vehicle body via the center pin 7. 6, producing an unpleasant rattling sound and impairing ride comfort.

In order to eliminate the above-mentioned disadvantages, there are methods such as reducing the gap between the bushing 15 and the center pin 7 as much as possible, or using a rubber bushing to create a structure that does not wobble, but as it deteriorates over time, it inevitably wobbles. There were problems such as increased friction and, in the case of rubber bushings, difficulty in removing the cart.

SUMMARY OF THE INVENTION An object of the present invention is to provide a car body support device that allows easy attachment and removal work between the car body and the bogie, and that does not transmit noise generated at the sliding portion between the car body and the bogie to the car body. .

The present invention provides a center pin attached to the turning center of a bogie so as to protrude upward from the bogie frame, a center pin receiver rotatably and removably fitted to the protrusion of the center pin, and a center pin holder attached to the lower part of the vehicle body. It is comprised of a link receiver attached at a position corresponding to the center pin, and a link rotatably connected at one end to the center pin receiver and at the other end to the link receiver via an elastic body. This is a characteristic feature.

An embodiment of the present invention is shown in FIGS. 5 to 7. FIG. 5 is a cross-sectional view of the truck, FIG. 6 is a view from D in FIG. 5, and FIG. 7 is a sectional view taken along line E--E in FIG. 6.

The relative relationship between the link 9, the center pin 21, and the bush 15 between the car body 6 and the bogie frame 18 is reversed from the above-mentioned conventional technology, and a link receiver 17 is attached to the car body 6; Two links 9 are arranged in parallel in the front-rear direction and connected to the center pin receiver 19, forming a so-called Z link. Rubber bushings 10 are attached to both ends of the link 9, and are designed to avoid prying of the link 9 due to movement in the vertical and horizontal directions.

A center pin 21 is attached to the bogie frame 18,
Rotation about the center pin takes place between the center pin 21 and the bush 15. The presser foot 16 is for fixing the center pin holder 19 to prevent relative movement in the vertical direction between it and the truck frame 18.
Tightened by 0.

According to this embodiment, the link receiver 17 is attached to the vehicle body 6, and the link 9 is attached to the link receiver 17 via the rubber bushing 10. Therefore, in the unlikely event that the center pin receiver 17 attached to the end of the link 9 Even if noise or vibration is generated due to rattling between the center pin 21 and the center pin 21, it is not directly transmitted to the vehicle body 6, but is transmitted to the vehicle body via the rubber bush 10. vibrations transmitted to,
Noise is reduced.

Also, when removing the trolley from the car body, use the nut 2
By loosening the center pin 21 and the center pin receiver 19, it can be easily disassembled.

In order to clearly show this relationship, FIG. 8 shows a schematic diagram of the vibration system of an embodiment of the prior art described above, and FIG. 9 shows a diagram of the vibration system of an embodiment of the present invention. If the present invention is applied, the vibrations and noises caused by rattling between the center pin 21 and the center pin receiver 19 are not transmitted directly but are alleviated by the rubber bushing 10, so the vibrations and noises transmitted to the vehicle body 6 are reduced. I understand that.

As described above, according to the present invention, it is possible to easily attach and detach the vehicle body and the bogie, and to suppress the propagation of noise and vibration generated in the sliding portion between the vehicle body and the bogie to the vehicle body.

[Brief explanation of the drawing]

Fig. 1 is a side view of a bolsterless type truck, Fig. 2 is a sectional view taken along line AA in Fig. 1 showing an example of the prior art, Fig. 3 is a sectional view taken along line BB in Fig. 2, and Fig. 4. is a sectional view taken along line CC in FIG. 3; 5 is a cross-sectional view taken along the line A-A in FIG. 1 showing an embodiment of the present invention, FIG. 6 is a view D in FIG. 5, and FIG. 7 is a cross-sectional view taken along line E-E in FIG. 6.
FIG. 8 is a schematic diagram of the vibration system of an embodiment according to the prior art.
FIG. 9 is a schematic diagram of a vibration system according to an embodiment of the present invention. 1... wheel axle, 2... axle box body, 3... axle spring,
4, 18...Bogie frame, 5...Air spring, 6...Car body, 9...Link, 10...Rubber bushing, 15
...Button, 16...Presser foot, 17...Link holder, 19...Center pin holder, 20...Nut, 21
...Center pin.

Claims (1)

[Claims] 1. In a car body support device for a bolster-less type bogie that supports the car body on the bogie via an air spring, a center pin is attached to the center of rotation of the bogie so as to protrude above the bogie frame, and a protruding portion of the center pin is rotatable. and a removably fitted center pin holder, a link holder attached to a position corresponding to the center pin on the lower part of the vehicle body, one end of which is elastically connected to the center pin holder, and the other end of which is elastically connected to the link holder. 1. A vehicle body support device for a bolsterless type bogie, comprising a link rotatably connected through the body.