JPH0657530B2 - Bolsterless trolley - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a bolsterless type trolley in which a vehicle body is directly supported on a trolley via pillow springs.

[Prior Art] A bogie structure according to the prior art is shown in FIGS.
FIG. 4 is a side view of the truck. FIG. 5 shows AA of FIG.
FIG. 6 shows a cross section taken along the line BB of FIG. 5, and FIG.
Each of the CC cross sections of a figure is shown.

The vehicle body 6 is supported by the bogie frame 4 via the air spring 5, and the bogie frame 4 is supported by the axle boxes 2 provided at both ends of the wheel axle 1 via the axle springs 3.

The center pin 7 attached to the vehicle body 6 fits into the center pin receiver 11 via the bush 16. Since the bush 16 is provided with a collar and is tightened by the nut 13 via the presser foot 12, it can move only up to about the clearance of the sliding portion in the vertical direction. When the bogie passes through the curved line, the bobbin rotates between the center pin 7 and the bush 16 and the bogie 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 having one end attached to the link receiver 15 and the other end attached to the center pin receiver 11 and extending in the longitudinal direction. Rubber bushes 10 are attached to both ends of the link 9, and play a role of mitigating longitudinal vibration and absorbing twisting caused by tilting of the link 9 due to relative movement of the vehicle body 6 and the bogie frame 4 in vertical and horizontal directions. A stopper rubber 8 is provided at a position corresponding to the left and right direction of the center pin 7 of the bogie frame 4.

The above structure of the bolsterless trolley has already been adopted for the German National Railways ET420 type train.
Also, Japanese Patent Publication No. 47-39495 and the like are known.

[Problems to be Solved by the Invention]

In the case of the above-mentioned known technique, since the rotational movement of the center pin 7 and the center pin receiver 11 is escaped by the sliding between the bush 16 and the center pin 7, there is a small clearance between the bush 16 and the center pin 7. There is a center pin 11 while the vehicle is running.
Is shaken by vibration, only the above-mentioned clearance causes rattling,
The vibration sound is directly transmitted to the vehicle body 6 through the center pin 7,
Occasionally, an unpleasant rattling noise was generated and the riding comfort was impaired.

In order to eliminate the above-mentioned inconvenience, there are methods such as minimizing the clearance between the bush 16 and the center pin 7 or using a rubber bush to make the structure free from rattling. The tattoo becomes big,
In the case of a rubber bush, the actual situation is that it is difficult to remove the truck.

The object of the present invention is to reduce the noise inside the vehicle without directly transmitting the noise generated at the connecting portion that transmits the longitudinal force between the bogie and the vehicle body to the vehicle body side, and to reduce the noise relative to the vehicle body of the bogie. It is to smoothly rotate around a vertical axis.

[Means for Solving the Problems]

The above object is to provide a trolley-side connecting member that is attached to a trolley and that includes a shaft portion in which an axis is arranged in a vertical direction, a first elastic body that is provided on the shaft portion of the trolley-side connecting member, and the trolley at the lower part of the vehicle body. The vehicle body-side connecting member installed corresponding to the side connecting member, one end of which is connected to the vehicle body-side connecting member via a second elastic body, and the other end of which is connected to the carriage-side connecting member. This is achieved by comprising a connecting means that is rotatably connected via an elastic body and provided with a sliding portion.

[Action]

According to the above configuration, the second means for connecting the connecting means and the vehicle body-side connecting member to the path through which noise generated at the sliding portion that rotatably connects the carriage-side connecting member and the connecting means is transmitted to the vehicle body.
Since the elastic body is arranged, the transmission of the noise to the vehicle body can be suppressed, and the vehicle interior noise in the vehicle body can be reduced. In addition, the connecting means and the carriage-side connecting member are rotatably connected to each other by providing a sliding portion so that the carriage can smoothly rotate about a vertical axis relative to the vehicle body. Unnecessary force or excessive lateral pressure on the axle of the bogie can be suppressed.

〔Example〕

 One embodiment of the present invention is shown in FIGS.

FIG. 1 is a transverse sectional view of the bogie, FIG. 2 is a D view of FIG. 1, and FIG. 3 is an enlarged sectional view taken along the line EE of FIG.

On the lower surface of the vehicle body 6, there is a link receiver 1 corresponding to a vehicle body side connecting member.
7 is fixed corresponding to the center pin 21. One end of a link 20, which corresponds to a connecting means, is secondly attached to the link receiver 17.
They are connected via a rubber bush 18 corresponding to an elastic body. The rubber bush 18 has an inner cylinder that is fastened to the link receiver 17 with a bolt 19 and an outer cylinder that is press-fitted to the link 20, so that it has no rattling or sliding portion.

The rubber bush outer cylinder 25 of the rubber bush 24 corresponding to the first elastic body is press-fitted into the other end of the link 20. Further, the bush 22 is press-fitted into the rubber bush inner cylinder 26 of the rubber bush 24. The bush 22 is fitted to a center pin 21 corresponding to a bogie-side connecting member attached to the bogie frame 4, and is rotatable about a vertical axis by sliding the two so that a longitudinal force between the vehicle body and the bogie is generated. Is installed to communicate. Further, the bush 22 is attached to the center pin 21 by a special bolt 23 and a nut 27 so as not to easily come out upward.

In this embodiment, in order to allow the bogie to turn between the center pin 21 and the bush 22, that is, between the center pin 21 and the rubber bush inner cylinder 26, and to facilitate the connection and removal work of the bogie and the vehicle body. A sliding portion made up of a shaft and an annular member is provided at a predetermined gap. Therefore, noise is generated from the gap due to the vibration of the link 20 while the vehicle is traveling. However, link receiver 1
A rubber bush 18, which is a second elastic body, and a rubber bush 24, which is a first elastic body, are installed between 7 and the center pin 21. Therefore, the vibration and noise are alleviated by the two rubber bushes 18 and 24 and are not directly transmitted from the truck to the vehicle body 6. As a result, the noise directly transmitted to the vehicle body 6 can be reduced as compared with the conventional bogie.

By the way, as described above, since the link 20 and the carriage are rotatably connected to each other by forming the sliding portion including the shaft and the annular member, the swing movement of the carriage can be smoothly performed. In other words, the link 20 or the link receiver 17, the center pin 21, and the like are not subjected to unnecessary force accompanying the turning of the carriage, and the structure can be simplified. Further, lateral pressure from the track acting on the axle of the bogie can be suppressed.

Further, when the bogie is removed from the vehicle body, the bush 22 and the special bolt 23 can be pulled upward together with the link 20 and the rubber bush 24 by loosening the nut 27, which can be easily disassembled.

Further, in the above structure, since the link receiver 17 and the center pin 21 are connected by the single link 20,
Compared with the above-mentioned conventional structure, the number of parts such as links and rubber bushes can be reduced, and the structure can be simplified.

By the way, although the rubber bush is rotatably installed with respect to the center pin in the above-described embodiment, the present invention is not limited to this structure, and the rubber bush is rotatably installed with respect to the link. You may. In such a configuration, since the diameter of the rotating portion can be increased,
It is possible to reduce wear in the sliding portion.

〔The invention's effect〕

According to the present invention, the vehicle interior noise is reduced without directly transmitting the noise generated at the connecting portion for transmitting the longitudinal force between the bogie and the vehicle body to the vehicle body side, and the vertical axis relative to the vehicle body of the bogie is reduced. It is possible to smoothly rotate around, that is, turn.

[Brief description of drawings]

FIG. 1 is a sectional view of a bolsterless type truck according to an embodiment of the present invention in a truck width direction, FIG. 2 is a D view of FIG. 1, FIG. 3 is a sectional view taken along line EE of FIG. Is a side view of a conventional dolly,
5 is a sectional view taken along line AA of FIG. 4, and FIG. 6 is taken along line B- of FIG.
B sectional view and FIG. 7 are CC sectional views of FIG. 4 ... Bogie frame, 5 ... Air spring, 6 ... Car body, 17 ... Link receiver, 18 ... Rubber bush, 20 ... Link, 21 ... Center pin, 24 ... Rubber bush

Claims (1)

[Claims] 1. A trolley-side connecting member attached to a trolley, comprising a shaft portion having an axis line arranged in a vertical direction, a first elastic body provided on the shaft portion of the trolley-side connecting member, and a lower portion of the vehicle body. A vehicle body side connecting member installed corresponding to the trolley side connecting member, one end of which is connected to the vehicle body side connecting member via a second elastic body, and the other end of which is connected to the trolley side connecting member. (1) A shaft spring device for a vehicle, comprising: a connecting means that is rotatably connected via an elastic body and provided with a sliding portion.