JPH0784170B2 - Railway vehicle towing device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a railway vehicle towing device, and more particularly to a railway suitable for a bolsterless truck that supports a vehicle body through an elastic body without providing a pillow beam on the truck. The present invention relates to a vehicle towing device.

[Prior Art] Conventionally, various bolsterless bogies have been studied and developed for transmitting a traction force between the bogie and a vehicle body, that is, a driving force or a braking force in the longitudinal direction of the bogie. Its configuration is to provide a center pin vertically downward at the bottom of the vehicle body,
The center pin receiver is rotatably installed on the center pin, and a traction force transmitting means for connecting the center pin receiver and the bogie frame. As this traction force transmission means,
There is one that uses a combination of an elastic body and a link or a leaf spring, and is configured to transmit the longitudinal force between the bogie and the vehicle body and allow the lateral displacement between the bogie and the vehicle body. . A device related to this type is, for example, Japanese Utility Model Publication No. 58-1406.

[Problems to be solved by the invention]

In the above-mentioned conventional example, in addition to transmitting the driving force or the braking force generated in a normal traveling state between the bogies, that is, the normal longitudinal force, the impact acting between the vehicle body and the bogie with the connection between the vehicles It has been necessary to make the traction force transmitting means not to cause a problem such as buckling with respect to a force, that is, a special longitudinal force generated by the inertial force of the bogie with respect to the vehicle end load of the vehicle body. Therefore, the elastic body used for the traction force transmission means needs to have a high spring constant capable of transmitting a large load, and the leaf spring also needs to have a high spring constant. The vibration of the vehicle may also be transmitted to the vehicle body, which may worsen the riding comfort. Further, when the elastic body or the leaf spring has a high spring constant, the overall configuration tends to be large, and there is a risk that the arrangement of various devices on the truck or the vehicle body becomes complicated.

An object of the present invention is to provide a railway vehicle towing device capable of suppressing vibration transmission to the vehicle body to improve riding comfort and reducing the size of the device.

[Means for solving problems]

The above-mentioned object is to provide a center pin attached to a position corresponding to the center of the bogie at the bottom of the vehicle body, a center pin receiver rotatably fitted to the center pin, and a center of rotation of the center pin receiver formed on the center pin receiver. With respect to the tow arm arranged in the left-right direction of the bogie symmetrically with respect to, a bracket formed at the tip end of the tow arm, a horizontal bracket formed in the lateral beam of the bogie frame, the bracket and the Installed with a pair of links connecting the horizontal beam bracket via two cushioning rubbers, and one of the center pin receiver and the horizontal beam facing the center pin receiver with a gap from the other. When transmitting the normal longitudinal force of the driving force and the braking force in the normal running of the vehicle, the cushion rubber, the link, the cushion rubber, When transmitted to the vehicle body via the bracket, the towing arm, the center pin receiver, and the center pin, and when a special longitudinal force greater than the normal longitudinal force is applied, the buffer rubber is compressed and deformed, and the central pin receiver And the front-rear force transmitting member are in direct contact with each other, and the front-rear force transmitting member, the center pin receiver and the center pin are transmitted to the vehicle body from the lateral beam of the bogie frame.

[Action]

The traction force transmitted between the vehicle body and the bogie by the link is a driving force and a braking force during normal traveling of the vehicle,
That is, the normal force is the front-rear force, and when a force more than that, that is, the special front-rear force is applied, the force is transmitted by the front-rear force transmitting member. It can be a constant number, can suppress the vibration transmitted from the dolly to the car body,
The link and cushion rubber and related equipment can be made compact.

〔Example〕

An embodiment of the towing device according to the present invention will be described below with reference to the drawings. In the figure, 1 is a vehicle body, 2 is a bogie frame that constitutes a bogie that supports the vehicle body 1 via an air spring 3, and 4 is a wheel axle that supports the bogie frame 2 so that it can travel on a track. Reference numeral 8 denotes a center pin vertically downwardly arranged at a position corresponding to the central portion of the bogie frame 2 in the lower portion of the vehicle body 1, and is attached to the vehicle body 1 by a bolt 9. A center pin receiver 6 is rotatably fitted to the center pin 8 and is installed at a position corresponding to the lateral beam 15 of the bogie frame 2. 7 is the horizontal
A stopper rubber corresponding to a longitudinal force transmission member installed at a position facing the center pin receiver 6 of 15 and having a predetermined gap between the center pin receiver 6 and the stopper rubber and acting between the vehicle body 1 and the trolley. It has a spring constant capable of transmitting the special longitudinal force. Reference numeral 10 denotes a rubber bush fitted and arranged in a rotating portion between the center pin receiver 6 and the center pin 8. Reference numeral 5 denotes a towing arm formed at a lower end portion of the center pin receiver 6, which extends in the left-right direction of the carriage so as to be point-symmetric with respect to a rotation center of the center pin receiver 6. Reference numeral 12 is a pair of links that connect a bracket 14 formed at the tip of the towing arm 5 and a horizontal beam bracket 13 formed on the horizontal beam 15 via a cushion rubber 11. The cushioning rubber 11 is provided between the vehicle body 1 and the bogie to generate driving force and braking force during normal traveling.
That is, it has a spring constant that can normally transmit the longitudinal force. By the way, the gap between the stopper rubber 7 and the center pin receiver 6 is larger than the maximum bending amount of the buffer rubber 11 when a force equal to or more than a load transmittable to the buffer rubber 11, that is, a special longitudinal force is applied. The stopper rubber 7 is adjusted so as to transmit a force in a range that is small and smaller than the maximum bending amount. By the way, the center pin receiver 6 is rotatably attached to the center pin 8 by a special bolt 9a.

In such a configuration, when the trolley is a drive trolley (motor, drive system configuration, and braking system configuration are not shown), the drive force and the braking force of the trolley are provided on the horizontal beam 15 of the trolley frame 2. Horizontal bracket 13, cushion rubber 11,
The link 12, the cushion rubber 11, the bracket 14 of the towing arm 5 and the towing arm 5 are transmitted to the center pin 8 and are transmitted to the vehicle body 1. By the way, regarding the load due to the special longitudinal force between the vehicle body 1 and the bogie, which is larger than the driving force and the braking force, that is, the coercive force of the bogie generated at the time of connecting the vehicles, the spring constant of the buffer rubber 11 has the characteristic that the load can be transmitted Since it is not formed, the buffer rubber 11 cannot transmit the force and is deformed. With the deformation of the cushioning rubber 11, the center pin receiver 6 and the stopper rubber 7 come into contact with each other, and the load from the bogie frame 2 is flattened.
15, transmitted to the vehicle body 1 through the stopper rubber 7, the center pin receiver 6, and the center pin 8. This state will be described with reference to FIG. 3. The horizontal axis represents the relative displacement δ between the vehicle body 1 and the bogie frame 2 in the front-rear direction, and the vertical axis represents the traction force F acting between the vehicle body 1 and the bogie frame 2. In the figure, the relationship between the relative displacement δ _{1 in} the front-rear direction between the vehicle body 1 and the bogie frame 2 with respect to the driving force or the braking force F ₁ during normal traveling is gentle, and it is shown that the spring constant of the buffer rubber 11 is small. There is. On the other hand, the longitudinal relative displacement δ _max between the vehicle body 1 and the bogie frame 2 with respect to the maximum traction force F _max determined by the center pin 8 and the bogie frame 2 at F ₁ or more shows a rapid change, and the spring constant of the stopper rubber 7 is large. It is shown that.

With such a configuration, since the spring constant of the cushioning rubber 11 is small as described above, the vibration due to the irregular track generated in the truck is not transmitted to the vehicle body 1. Further, since the load transmitted by the cushioning rubber 11 is smaller than that of the conventional one, it is assumed that the cushioning rubber 11 itself, the link 12, the brackets 13, 14 and the like are made compact and lightweight according to the load transmitted. it can. Further, by disposing the link 12 below and the stopper rubber 7 above, the point where a large load acts on the center pin 8 approaches the base end side of the center pin 8, so that the moment acting on the center pin 8 is reduced. The number can be reduced and the configuration can be simplified. Therefore, the size and weight of the center pin 8 can be reduced.

Further, in the above structure, since the cushioning rubber 11, the link 12, the horizontal beam bracket 13, and the bracket 14 can be made small, they can be provided below the horizontal beam 15. As a result, the length of the link 12 can be arbitrarily determined and is not limited by the structure of the bogie frame 2. By securing the length of the link 12 to some extent, the equivalent spring constant for vertical vibration can be reduced, and vibration transmission from the truck to the vehicle body 1 can be suppressed.

Although the stopper rubber 7 is provided on the lateral beam 15 of the bogie frame 2 in the above-described embodiment, the same performance can be obtained by installing the stopper rubber 7 on the center pin receiver 6. Further, in the above embodiment, an example of the Z-link system using two links 12 has been described, but the present invention is not limited to this, and the same effect can be obtained by applying the one-link system. It is what is done.

〔The invention's effect〕

As described above, according to the present invention, it is possible to suppress vibration transmission to the vehicle body to improve riding comfort and to downsize the device.

[Brief description of drawings]

FIG. 1 is a sectional view of a towing apparatus according to the present invention in the front-rear direction of a bogie, FIG. 2 is a plan view of a bogie having the towing device of FIG. 1, and FIG. 3 is a towing of the towing device of FIG. 6 is a graph showing changes in force and relative displacement in the front-rear direction between the vehicle body and the bogie frame. 2 ... Bogie frame, 5 ... Towing arm, 6 ... Center pin receiver, 7
…… Stopper rubber, 8 …… Center pin, 11 …… Cushion rubber,
12 …… Link, 13,14 …… Bracket, 15 …… Horizontal

Claims (1)

[Claims] 1. A center pin attached to a position corresponding to a center of a bogie at a lower portion of a vehicle body, a center pin receiver rotatably fitted to the center pin, and a rotation of the center pin receiver formed on the center pin receiver. A towing arm arranged symmetrically with respect to the center in the left-right direction of the bogie, a bracket formed at a tip end of the towing arm, a lateral bracket formed on a lateral frame of the bogie frame, and the bracket. A pair of links connecting the horizontal beam brackets via two buffer rubbers, and one of the center pin receiver and the horizontal beam facing the center pin receiver with a gap from the other. When the normal longitudinal force of the driving force and the braking force in the normal running of the vehicle is transmitted, the cushion rubber, the link, the cushion rubber, When transmitted to the vehicle body via the bracket, the towing arm, the center pin receiver, and the center pin, and when a special longitudinal force greater than the normal longitudinal force is applied, the buffer rubber is compressed and deformed, and the central pin receiver And a front-rear force transmission member are in direct contact with each other, and the front-rear force transmission member, the center pin receiver, and the center pin are transmitted to the vehicle body from the sideways of the bogie frame.