JP2601969B2 - 2-axle bogie for trailer connection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called bi-modal trailer connecting two-axle truck for connecting truck transport trailers to each other for rail transport.

[0002]

2. Description of the Related Art In land transportation, truck transportation and rail transportation are known. Each of these has its own characteristics, and the former has a small turn and is suitable for final transportation to various destinations. On the other hand, the latter is suitable for transporting large quantities of goods at once. The former is also suitable for short-distance transportation, and the latter is suitable for long-distance transportation.

[0003] Therefore, as a new transportation system that takes advantage of the advantages of these two transportation systems, a so-called bimodal transportation system (sometimes called an intermodal transportation system) that combines truck transportation and rail transportation with a trailer as a medium. Has been proposed and adopted.

In this bimodal transportation system, various devices have been devised for a truck connecting the trailers. Conventionally, various types as shown in FIGS. 7A to 7E have been used. Was adopted. These are all devised so that the connected trailers can maintain a degree of freedom of movement when passing through a curve or the like.

In (A), (D) and (E), the bogie supports the end of one of the trailers and attempts to secure the degree of freedom at the connection between the trailers. Also,
(C) is a type that supports the trailer on the left side in the figure at two or more points and supports the trailer on the right side at one point, thereby securing the degree of freedom as a three-point support.

[0006] Further, in the case of (B), the connection between the truck and the trailer is a complicated mechanism, and the degree of freedom is ensured by this complicated mechanism.

[0007]

All of these prior arts are excellent in that the trailers can be connected to each other for rail transport while maintaining the freedom of movement between the trailers. There were, however, further points to be improved.

[0008] In the case of (A), (D) and (E), since the trailers are connected to each other, it is necessary to provide a projection on the trailer itself.
There has been a problem that the loading portion of the trailer must be shortened, and the transportation efficiency is reduced.

In the case of (C), there is no problem in the dimensions of the trailer. However, when one of the trailers is empty and the other is full, the load applied to the bogie becomes an uneven load. There was a problem that can not be achieved. Further, in the case of (B), although such a problem does not occur, there is a problem that the manufacturing cost of the bogie increases because the bogie itself has a complicated structure.

[0010] The present invention provides a biaxially-connected two-shaft trailer with a simple structure capable of securing a degree of freedom of movement without sacrificing the dimensions of the loading portion of the trailer to be connected and suppressing the occurrence of an eccentric load. It has been completed for the purpose of solving the above-mentioned problems by realizing high efficiency and high speed transportation by a bogie.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a two-axle truck for connecting a trailer for connecting a plurality of trailers for truck transportation to be used for rail transportation. A first support frame on which a trailer is mounted and connected to the trailer by a horizontal load receiver; and a first support frame on which the other trailer is mounted and which is connected to the trailer by a horizontal load receiver. 2
The support frame is provided separately, and each of the first and second support frames is supported by one load receiving portion disposed at the center between the axles of the bogie main body, and at least one of the support frames includes: The load receiving portion is swingably connected to the load receiving portion via a spherical bearing.

According to the two-axle truck for trailer connection of the present invention having such a configuration, the horizontal load of the connected trailer is received by the horizontal load receiver of each support frame. Since each of these support frames is supported by a load receiving portion arranged at the center between the axles of the bogie main body, both trailers are connected to each other by this.

[0013] On the other hand, the weight of each trailer is transmitted to the load receiving portion via each mounted support frame. Since one load receiving portion is disposed at the center between the axles, the sum of the load to be supported by the first support frame and the load to be supported by the second support frame is applied to the center between the axles. That is, a vertical load obtained by equally dividing the total load is distributed to each axle. Therefore, no eccentric load is generated based on the loaded state of each trailer. In addition, since at least one of the support frames is supported by the load bearing portion with the spherical bearing, each connected trailer can freely perform rolling, yawing, and pitching.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a second embodiment of the present invention will be described.
An embodiment of the axle carriage 1 will be described in detail with reference to the drawings. FIG.
3 are a plan view, a longitudinal sectional view, and a left side view, respectively, of the two-axle truck 1 for trailer connection. 4 and 5
FIG. 6 is a schematic diagram showing transmission of a load in the vertical direction, and FIG. 6 is a schematic diagram illustrating a use state of the trailer-connecting two-axle truck 1. In FIG. 1, a half of the center line is shown with the structure of the ceiling part removed so that the inside can be seen, and a sectional view is further used for the center part.

As shown, a two-axle truck 1 for trailer connection
Is a truck body 7 having four wheels 5 on two axles 3
And a transverse member 9 disposed at the center between the front and rear axles 3 and 3 of the bogie main body 7, and a trailer support 10 disposed above the transverse member 9.

The trailer support 10 includes a first trailer T
A first support frame 11 that supports R1 and a second support frame 13 that supports the second trailer TR2 are provided separately. Here, one feature of this embodiment is that each of the support frames 11 and 13 is supported by a load receiving portion 15 provided at the center of the horizontal member 9. In addition, it has a characteristic in how to support it. This will be described in detail.

The first support frame 11 is connected to the load receiving portion 15 by a bearing 17 provided on a support portion 11a at one end. In this connection, a spherical bearing 21 attached to the load receiving portion 15 with a center pin 19 is employed, and the first support frame 11 is mounted on the load receiving portion 1.
5 is connected so as to be able to swing freely in rolling, yawing and pitching. On the other hand, the second support frame 13 has a support portion 13a at one end directly fixed to the load receiving portion 15, and is supported like a cantilever.

The first support frame 11 is connected to a towing pin 25 provided at the rear end of the first trailer TR1 by a coupling 23 disposed at the trailer connection portion 11b. Here, the first support frame 1
1 is that the upper surface 11c of the support portion 11a is
It has a bent shape at the center so as to be above the coupling 23 provided in 1b. Further, when the towing pin 25 of the first trailer TR1 is connected by the coupling 23, the length of the first trailer TR
1, the rear end TR1end is defined so as to be supported by the front end portion of the upper surface 11c of the support portion 11a. For this reason, the first trailer TR1 is placed on the upper surface 11c of the support portion 11a of the first support frame 11 to support the vertical load, but the vertical load does not act on the coupling 23. Therefore, in the coupling 23, the first trailer TR1 is connected so that only a horizontal load acts.

The first support frame 11 is further provided with a guide ridge 27 tapering toward the free end on the side surface of the trailer connecting portion 11b. Then, as shown in FIG. 3, the guide ridge 2 is provided on the trailer TR1.
A guide groove 29 that fits with the groove 7 is formed. Accordingly, the first trailer TR1 is brought into contact with the first and second guide ridges 27 and the guide grooves 29 in the vertical direction.
The vertical load is also supported by the trailer connecting portion 11b of the supporting frame 11 described above.

The vertical load P1 thus supported is
a and P1b are the first support frames 1 as shown in FIG.
The bearing 17 provided on the first supporting portion 11a and the spherical bearing 2
A load (P1a + P1b) is applied vertically to the load receiving portion 15 via the center pin 1 and the center pin 19.

On the other hand, the second support frame 13 is also connected to a towing pin 33 provided at the front end of the second trailer TR2 by a coupling 31 provided at the trailer connection portion 13b. Then, the second support frame 13
1, the second trailer TR2 is placed on the upper surface 13c of the support portion 13a of the second support frame 13 to support a vertical load. No vertical load acts on the coupling 31. Here, when the towing pin 33 of the second trailer TR2 is connected by the coupling 31, the length of the second support frame 13 is equal to the front end TR2fo of the second trailer TR2.
rward is defined so as to be supported directly above the load receiving portion 15. For this reason, as shown in FIG. 5, the second trailer TR2 receives the vertical load P2 perpendicularly to the load receiving portion 15. The coupling 31 is connected in such a manner that only a horizontal load can be received.

As a result, the first and second trailers TR1, TR1,
The vertical load applied to the trailer connecting two-axle truck 1 from the TR 2 is applied only vertically to the load receiving portion 15 as a total, and is equally distributed to the front and rear axles 3 and 3. Therefore, for example, the first trailer TR1 is full but the second trailer TR
Even when 2 is empty, the front and rear axles 3 and 3 always apply only a uniform vertical load, so that there is no problem in increasing the speed. Further, since the first support frame 11 is supported by the spherical bearing 21 so as to be freely rollable, yawable and pitchable, the first trailer TR1 and the second trailer TR2 are allowed to freely move independently. . Accordingly, when the vehicle passes through a curve or the like, each of the trailers TR1 and TR2 can freely move.

When changing from truck transport to rail transport, first, as shown in FIG.
Trailing end TR1en of the first trailer TR1 connected to KT
The rear bumper B1 of d is flipped up (A). Then, the trailer TR1en is operated by operating the air suspension of the trailer TR1.
d to raise the two-axle truck 1
To the first support frame 11 of the tractor TRKT
(B). Then, the guide ridge 27 and the guide groove 29 are fitted together, and the towing pin 25 is connected by the coupling 23 (C). Further, in this state, an air or electric connecting hose is connected between the trailer TR1 and the connecting biaxial carriage 1.

Next, after operating the air suspension of the trailer TR1 to raise the tires (D),
A trailer connecting two-axle bogie 100
(Having the same configuration as the two-axle truck 1 for trailer connection) and the front end TR2 of the second trailer TR2 prepared with the front end TR2forward in a jack-up state.
The tractor TRKT is moved toward forward (E). Then, the towing pin 33 on the front end side of the second trailer TR2 is connected to the coupling 31 of the second support frame 13 of the trailer connecting biaxial carriage 1 (F). After that, the first trailer TR1 also moves to the front end TR1fo
rward is in the jack-up state and the tractor TRKT
And the jack-up of the second trailer TR2 is released (G).

Thus, the two trailers TR1 and TR2 are connected by the trailer connecting two-axle truck 1. In addition,
Each of the trailers TR1 and TR2 is pressed against the first support frame 11 or the load receiving portion 15 by pins 35 and 37 for suppressing vertical movement.

As described above, according to this embodiment, a uniform load can be distributed to each of the axles 3, 3.
In adopting bimodal transportation, there is no problem in increasing the speed of railway transportation. In addition, since the length of the trailers TR1 and TR2 is not sacrificed, there is no problem in the road traffic law and the load space is not sacrificed. In addition, since the structure of the trailer connecting two-axle truck 1 itself is simple, the manufacturing cost does not matter.

Further, the first support frame 11 can freely move in the rolling direction, the yawing direction and the pitching direction by the spherical bearing 21, so that the movement of the two trailers TR1 and TR2 is almost restricted. I will not receive it. Although the embodiment of the present invention has been described above,
The present invention is not limited to this, and various modes can be adopted without departing from the gist thereof.

For example, not only the first support frame 11 but also the second support frame 13 can be configured to be connected to the load receiving portion 15 by a connection method having a high degree of freedom such as a spherical bearing. .

[0029]

As described above, according to the two-axle truck for connecting a trailer of the present invention, in bimodal transportation, the degree of freedom of movement can be secured without sacrificing the loading portion dimensions of the connected trailer. Since the occurrence of eccentric load can be suppressed, high efficiency and high speed transportation can be realized,
Since the structure itself is simple, there is a remarkable effect that the cost of the bogie itself is not increased.

[Brief description of the drawings]

FIG. 1 is a plan view, partially in section, of a two-axle truck for trailer connection according to an embodiment.

FIG. 2 is a longitudinal sectional view of the trailer-connecting two-axle truck according to the embodiment.

FIG. 3 is a side view of the two-axle truck for trailer connection according to the embodiment as viewed from a first support frame side.

FIG. 4 is a schematic diagram showing transmission of a vertical load in a first support frame.

FIG. 5 is a schematic diagram showing transmission of a vertical load in a second support frame.

FIG. 6 is a schematic view showing a trailer connection operation by a trailer connection two-axle truck.

FIG. 7 is a schematic view illustrating a configuration of a conventional two-axle truck for trailer connection.

[Explanation of symbols]

1,100: two-axle truck for trailer connection, 3: axle, 5:
Wheels, 7: bogie body, 11: first support frame, 13
... Second support frame, 15 ... Load receiving part, 21 ... Spherical bearing, 23,31 ... Coupling, 25,33 ... Towing pin, TR1 ... First trailer, TR2 ... Second trailer

Continued on the front page (72) Inventor Shigeki Nishi 1-6-5 Marunouchi, Chiyoda-ku, Tokyo Japan Freight Railway Co., Ltd. (72) Inventor Masaru Sakata 1-6-5 Marunouchi, Chiyoda-ku, Tokyo Japan Freight Railway Company Inside the company (72) Inventor Rikuo Iwamoto Kanagawa Prefecture Yokohama City Kanazawa Ward 1 Kamariya-cho Tokyu Vehicle Manufacturing Co., Ltd. (72) Inventor Nobufumi Ishikawa 1 Kanara Ward Kanazawa-ku Yokohama City Kanagawa Prefecture Tokyu Vehicle Manufacturing Co., Ltd. 72) Inventor: Masako Kobayashi 1-1, Sanbonmatsucho, Atsuta-ku, Nagoya-shi, Aichi Japan (72) Inventor: Akihiro Sasaki 1-1-1, Sanbonmatsucho, Atsuta-ku, Nagoya-shi, Aichi Japan (56) References JP-A-59-67159 (JP, A)

Claims (1)

(57) [Claims] 1. A trailer connecting two-axle truck for connecting truck trailers to each other for rail transport, wherein one of the trailers is placed and connected to the trailer by a horizontal load receiver. A first support frame, and a second support frame on which the other trailer is placed and which is connected to the trailer by a horizontal load receiver. Each of the frames is supported by one load receiving portion disposed at the center between the axles of the bogie main body, and at least one support frame is swingably connected to the load receiving portion via a spherical bearing. A two-axle bogie for trailer connection, characterized in that: