JPH05262266A - Biaxial truck coupled to trailer - Google Patents

Abstract

PURPOSE:To embody high efficiency/high speed transportation by a simple structure biaxial truck for coupling to a trailer which ensures the degree of freedom of movement and suppresses the generation of an unbalanced load without sacrificing the dimension of the loading part of a trailer to be coupled, in bimodal transportation. CONSTITUTION:A first support frame 11 is securely supported in a cantilever- form manner to a load support part 15 arranged at a central part between axles 3 and 3 and a second support frame 13 is rockably coupled and supported through a spherical bearing by means of a spherical bearing 21 in a state to be capable of freely rolling, yawing, and pitching. The support frame 11 and 13 are formed in a shape that the central part thereof is bent, and trails TR1 and TR2 are intercoupled in a state to support only a horizontal load by means of couplings 23 and 31 and towing bars 25 and 33. As a result, a vertical load from the trailers TR1 and TR2 coupled in a placed state to the support frames 11 and 13, respectively, are constantly equally distributed to the front and rear axles 3 and 3 and the degree of freedom of movement of the two trails can be also ensured.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art As land transportation, truck transportation and rail transportation are known. Each of these has its own characteristics, and the former has a small turning effect 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.

Therefore, as a new transportation system utilizing the advantages of these two transportation systems, a so-called bimodal transportation system (sometimes called an intermodal transportation system) in which a trailer is used as an intermediary, and truck transportation and rail transportation are combined. Has been proposed and adopted.

In this bimodal transportation system, various contrivances have been made to the trucks that connect the trailers to each other. Conventionally, various types such as those shown in FIGS. 7A to 7E are available. Was adopted. Each of these is designed so that the connected trailers can maintain the freedom of movement when passing through a curve or the like.

In the cases of (A), (D), and (E), the trolley supports the end of one trailer, and tries to secure the degree of freedom at the joint between the trailers. Also,
In (C), the trailer on the left side of the drawing is supported by two or more points, and the trailer on the right side is supported by one point, so that flexibility is ensured as three-point support.

Further, the type (B) is of a type in which the dolly and the trailer are connected to each other by a complicated mechanism, and the degree of freedom is secured by this complicated mechanism.

[0007]

Each of these conventional examples is excellent in that the trailers can be connected for rail transportation while maintaining the freedom of movement between the trailers. However, there were points that needed further improvement.

In the cases of (A), (D), and (E), since the trailers are connected to each other, it is necessary to provide protrusions on the trailers themselves.
There has been a problem that the loading efficiency of the trailer has to be shortened and transport efficiency deteriorates.

Further, in the case of (C), there is no problem in the size of such a trailer, but when one is empty and the other is full, the load applied to the trolley becomes an eccentric load, and therefore the speed is increased. There was a problem that I could not achieve it. Further, in the case of (B), although such a problem does not occur, there is a problem that the manufacturing cost of the car increases because the car itself has a complicated structure.

According to the present invention, in bimodal transportation, a two-shaft trailer connecting shaft having a simple structure that can secure the freedom of movement without sacrificing the size of the trailer to be connected and can suppress the occurrence of an unbalanced load. It was completed for the purpose of solving the above problems by realizing high efficiency and high speed transportation by a trolley.

[0011]

SUMMARY OF THE INVENTION The present invention, which has been made to achieve the above object, provides a trailer connecting two-axle trolley for connecting rails for truck transportation to each other for rail transportation. A first support frame on which the trailer is placed and which is connected to the trailer by a horizontal load receiver, and a first support frame on which the other trailer is placed and which is connected to the trailer by a horizontal load receiver. Two
The support frame is separately provided, and each of the first and second support frames is supported by one load receiving portion arranged in the center between the axles of the carriage main body, and at least one support frame is The load receiving portion is swingably connected via a spherical bearing.

According to the trailer-connecting two-axle cart of the present invention having such a structure, the horizontal load of the trailers to be connected is received by the horizontal load receiver of each supporting frame. Since each of these support frames is supported by the load receiving portion arranged in the center between the axles of the bogie main body, both trailers are connected by this.

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 arranged in 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. Therefore, a vertical load obtained by equally dividing the total load is distributed to each axle. Therefore, an unbalanced load based on the loading state of each trailer does not occur. Moreover, since at least one of the support frames is supported by the spherical bearing on the load receiving portion, each trailer to be connected can freely perform rolling, yawing, and pitching.

[0014]

EXAMPLES Next, a trailer connecting unit 2 embodying the present invention
An embodiment of the axle truck 1 will be described in detail with reference to the drawings. Figure 1
3 to FIG. 3 are a plan view, a vertical sectional view, and a left side view, respectively, of the trailer connecting two-axle cart 1. Also, FIG. 4 and FIG.
FIG. 6 is a schematic diagram showing transmission of a load in the vertical direction, and FIG. 6 is a schematic diagram illustrating a usage state of the trailer-coupling biaxial truck 1. In FIG. 1, half of the center line is shown by removing the structure of the ceiling so that the inside can be seen, and a sectional view of the center is also used.

As shown in the drawing, a two-axle truck 1 for connecting a trailer
Is a bogie body 7 in which four wheels 5 are arranged on two axles 3.
And a lateral member 9 arranged at the center between the front and rear axles 3, 3 of the bogie main body 7, and a trailer support portion 10 arranged above the lateral member 9.

The trailer support portion 10 includes a first trailer T.
The first support frame 11 that supports R1 and the second support frame 13 that supports the second trailer TR2 are separately provided. Here, one feature of the present embodiment is that each of the support frames 11 and 13 is supported by the load receiving portion 15 provided at the center of the lateral member 9. It also has a feature in the way it is supported. This point will be described in detail.

The first support frame 11 is connected to the load receiving portion 15 by a bearing 17 provided on the support portion 11a at one end. In this connection, the spherical bearing 21 attached to the load receiving portion 15 by the center pin 19 is adopted, and the first supporting frame 11 is the load receiving portion 1
5 is connected in such a manner that it can swing freely such as rolling, yawing and pitching. On the other hand, in the second support frame 13, the support portion 13a at one end is directly fixed to the load receiving portion 15 and is supported like a cantilever.

Further, the first support frame 11 is connected to the towing pin 25 provided at the rear end portion of the first trailer TR1 by the coupling 23 arranged in the trailer connecting portion 11b. Here, the first support frame 1
1, the upper surface 11c of the supporting portion 11a is the trailer connecting portion 1
It has a bent shape in the central portion so that it is located above the coupling 23 provided in 1b. Further, the length of the first trailer TR1 when the towing pin 25 of the first trailer TR1 is connected by the coupling 23.
The rear end TR1end of No. 1 is set to be supported by the front end side portion of the upper surface 11c of the support portion 11a. Therefore, 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 the horizontal load acts.

The first support frame 11 is further provided with guide ridges 27 tapering toward the free end on the side surface of the trailer connecting portion 11b. Then, as shown in FIG. 3, the trailer TR1 is provided with the guide ridges 2
7 is formed with a guide groove 29. Therefore, with respect to the first trailer TR1, the contact between the guide ridge 27 and the guide groove 29 in the vertical direction causes
The vertical load is also supported by the trailer connecting portion 11b of the support frame 11.

Then, the vertical load P1 thus supported.
a and P1b are the first support frame 1 as shown in FIG.
Bearing 17 provided on the support portion 11a of No. 1 and spherical bearing 2
The load (P1a + P1b) is vertically applied to the load receiving portion 15 via the pin 1 and the center pin 19.

On the other hand, the second support frame 13 is also connected to the towing pin 33 provided at the front end portion of the second trailer TR2 by the coupling 31 arranged at the trailer connecting portion 13b. Then, the second support frame 13
Also, as shown in FIG. 1, the second trailer TR2 has a bent shape at the center and is placed on the upper surface 13c of the support portion 13a of the second support frame 13 to support a vertical load. A vertical load does not act on the coupling 31. Here, the length of the second support frame 13 is such that, when the towing pin 33 of the second trailer TR2 is connected by the coupling 31, the front end TR2fo of the second trailer TR2.
The rward is designed to be supported just above the load receiving portion 15. Therefore, the vertical load P2 of the second trailer TR2 can be vertically received by the load receiving portion 15, as shown in FIG. 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,
The vertical load applied from TR2 to the two-axle bogie 1 for trailer connection is applied to the load receiving portion 15 only vertically as a total, and is evenly distributed to the front and rear axles 3, 3. Therefore, for example, the first trailer TR1 is full but the second trailer TR1 is full.
Even when 2 is empty, front and rear axles 3 and 3 are always applied with a uniform vertical load, and 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 move freely independently. .. Therefore, the trailers TR1 and TR2 can freely move when passing through a curve or the like.

When changing from truck transportation to rail transportation, first, as shown in FIG.
Rear end TR1en of the first trailer TR1 connected to KT
Flip up the rear bumper B1 of d (A). Next, operate the air suspension of the trailer TR1 to move the trailer TR1en.
2-axle dolly for trailer connection 1 prepared by raising d
Toward the first support frame 11 of the tractor TRKT
Back (B). Then, the guide ridge 27 and the guide groove 29 are fitted, 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 two-axle carriage 1.

Next, the air suspension of the trailer TR1 is operated to raise the tire this time (D),
The trailer TR2end has a trailer connecting two-axle truck 100 in advance.
The front end TR2 of the second trailer TR2, which has the same structure as the trailer connecting two-axle trolley 1 and is prepared with the front end TR2forward being in a jack-up state.
The tractor TRKT is moved toward the forward direction (E). Then, the towing pin 33 on the front end side of the second trailer TR2 and the coupling 31 of the second support frame 13 of the trailer connecting two-axle trolley 1 are connected (F). After that, the first trailer TR1 is also the front end TR1fo
With the rward in the jack-up state, the tractor TRKT
And the jack-up of the second trailer TR2 is released (G).

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

As described above, according to the present embodiment, it is possible to evenly distribute the load to the axles 3 and 3.
When adopting bimodal transportation, there is no problem in speeding up railway transportation. Moreover, since the trailers TR1 and TR2 are not sacrificed in length for that reason, there is no problem in terms of road traffic law and the loading space is not sacrificed. Moreover, since the structure of the trailer-coupling two-axle cart 1 itself is simple, its manufacturing cost does not matter.

Further, the spherical bearing 21 allows the first support frame 11 to freely move in the rolling direction, the yawing direction, and the pitching direction. Therefore, the movements of the two trailers TR1 and TR2 are almost restricted. You will not receive it. 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 scope of the invention.

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

[0029]

As described above, according to the two-axle cart for trailer coupling of the present invention, in bimodal transportation, the freedom of movement is ensured without sacrificing the size of the trailer to be coupled. Since it is possible to suppress the occurrence of unbalanced loads, it is possible to realize high efficiency and high speed transportation, and
Due to its simple structure, it has the remarkable effect of not increasing the cost of the bogie itself.

[Brief description of drawings]

FIG. 1 is a plan view showing a partial cross-section of a trailer-coupling twin-axle cart of an embodiment.

FIG. 2 is a vertical cross-sectional view of a trailer-connecting two-axle cart of the embodiment.

FIG. 3 is a side view of the trailer-coupling twin-axle truck of the embodiment as viewed from the first support frame side.

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

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

FIG. 6 is a schematic diagram showing a trailer connecting operation by a trailer connecting two-axle cart.

FIG. 7 is a schematic view showing a configuration of a conventional two-axle truck for connecting trailers.

[Explanation of symbols]

1,100 ... Trailer connecting two-axle truck, 3 ... axle, 5 ...
Wheels, 7 ... Bogie body, 11 ... First support frame, 13
... second support frame, 15 ... load receiving portion, 21 ... spherical bearing, 23, 31 ... coupling, 25, 33 ... towing pin, TR1 ... first trailer, TR2 ... second trailer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000004617 Japan Vehicle Manufacturing Co., Ltd. 1-1, Sanbonmatsucho, Atsuta-ku, Nagoya, Aichi Prefecture (72) Inventor Shigeki Nishi 1-6-5, Marunouchi, Chiyoda-ku, Tokyo Nihonhon Freight Railway Co., Ltd. (72) Inventor Masaru Sakata 1-6-5 Marunouchi, Chiyoda-ku, Tokyo Nihon Freight Railway Co., Ltd. (72) Inventor Rikuo Iwamoto 1 Kamariya-cho, Kanazawa-ku, Yokohama, Kanagawa Tokyu Car Manufacturing Co., Ltd. (72) Inventor Nobunfumi Ishikawa No. 1 Kamariya-cho, Kanazawa-ku, Yokohama-shi, Kanagawa Tokyu Vehicle Manufacturing Co., Ltd. (72) Masako Kobayashi 1-1 Sanbonmatsu-cho, Atsuta-ku, Nagoya, Aichi Japan Vehicle Manufacturing Co., Ltd. (72) Inventor Akihiro Sasaki 1-1, Sanbonmatsucho, Atsuta-ku, Nagoya-shi, Aichi Japan Vehicle Manufacturing Co., Ltd.

Claims (1)

[Claims] 1. A two-axle truck for connecting trailers for connecting rails for truck transportation to each other for rail transportation, wherein one trailer is placed and connected to the trailers 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 are separately provided, and the first and second support frames are provided. Each of the frames is supported by one load receiving portion arranged in the center between the axles of the bogie main body, and at least one supporting frame is swingably connected to the load receiving portion via a spherical bearing. A two-axle dolly for trailer connection characterized by being made.