JPH0632229A - Freight car for piggyback carrying system - Google Patents

Abstract

PURPOSE:To provide a freight car having a low floor and long car body by converting a piping construction of air pipe near a coupler. CONSTITUTION:A hard pipe 100 is arranged to a coupler 12 mounting section on the lower part of a car body. A soft hose 10 is arranged to the tip of a pivotal part of the coupler provided in the rear part of the coupler 12. The hard pipe 100 fixed to the coupler is arranged from the position of the tip to this side of the connection of the coupler 12. The hard pipe 100 is provided on the tip with a means provided with a removably attachable cock 15 and a means for interconnecting the removably attachable cocks 15 provided in both freight cars through a soft hose 101 when the freight cars are interconnected through the coupler 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a freight car used for railway vehicles, and more particularly to a structure of a freight car for a piggyback transportation system used in a piggyback transportation system for transporting a truck loaded with a load together with the truck.

[0002]

2. Description of the Related Art First, the difference between a container transportation system and a piggyback transportation system will be described with reference to FIG. 2A shows a container transportation system, and FIG.
(B) is a diagram for explaining the piggyback transportation system, in which 1 is a freight car, 2 is a truck, 3 is a loading lamp, and 4 is a crossover. Container transport systems are well known and will not be described here, but this system requires containers. Due to the need to transship containers from trucks to freight cars, a considerable amount of space is required within the station premises at both the departure station and the arrival station. Forklift work for transshipment requires time and manpower. There are drawbacks such as. The piggyback transportation system was devised to eliminate these drawbacks and has been in operation since November 1986. As shown in Fig. 2 (B), the truck itself loaded with the cargo is self-propelled. This is a system that transports the cargo along with the truck by loading it on a freight car, and does not require a container in comparison with a container transportation system. There is no need for space such as container storage. Since there is no need for container loading and unloading, there is no need for forklift work, and no space for that. The working hours of truck drivers can be shortened. It is possible to cope with labor shortages and exhaust gas regulations. There are merits such as.

[0003]

As described above, the piggyback transportation system has many advantages over the container transportation system, but this system has the following problems. In other words, rail transportation is subject to various restrictions due to the railway operation law and actual driving, but there are restrictions on vehicle height and vehicle width, and these restrictions are naturally imposed on piggyback transportation systems. . In particular, since the piggyback transportation system carries the truck itself loaded with the cargo, when the conventional freight car and truck are used, the vehicle height at which the vehicle can be operated is exceeded. For this reason, a wagon with a floor as low as possible is required. In addition, since the truck itself can be loaded, the loading efficiency will deteriorate, but in the current situation of overcrowded train schedules, it is extremely difficult to expand the transportation frame, so the total floor area of one freight car must be made as large as possible. However, since the vehicle height and vehicle width are limited as described above, the vehicle length must be lengthened to increase the total floor area. That is, in order to realize an efficient piggyback transportation system, a freight car with a low floor and a long vehicle length must be used, but it is difficult to use the conventional freight car structure for the following reason.

FIG. 3 is a diagram showing an outline of a structure around a connector of a conventional freight car of this type, and FIG. 4 is a diagram for explaining a difference in operation due to a difference in vehicle length. 1
1 is a frame, 12 is a coupler, and 13 is an MR (main)
Reservoir tube, 14 is BP (break p
pipe), 15 is a detachable cock, 100 is a hard pipe part of MR pipe and BP pipe, and 101 is a soft pipe part. The structure in the vicinity of the connecting portion of the freight car is as shown in FIG. 3, and when this freight car travels on the curved track 16 as shown in FIG. That is, in the case of a freight car with a short vehicle body (M1-M2) shown in FIG. 4 (A) and the case of a freight car with a long vehicle body (N1-N2) shown in FIG. As is well known, the difference fluctuates greatly in the case of long freight cars.
Therefore, in the case of a long freight car, the MR tube 13 shown in FIG.
It is necessary to design the soft hose portion 101 of the BP pipe 14 with some slack.

However, when the soft hose portion 101 is designed so as to have some slack, the ground clearance (H ') becomes lower as shown in FIG. 3, and a freight car with a low floor cannot be realized. When the soft hose portion 101 has a large degree of slack, the soft hose may be swung outward by centrifugal force when it bends in a curve, and may come into contact with the surroundings. It should be noted that such a problem similarly occurs not only in a curve such as an inversion curve or a compound curve, but also in the case of passing a crossing or a crossover.

The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a freight car for a piggyback transportation system capable of ensuring a loading efficiency comparable to that of a container transportation system even under the current size restrictions. Has an aim.

[0007]

A piggyback transportation freight car according to the present invention is characterized by the structure of its connecting portion so as to make the floor height as low as possible and the vehicle body length as long as possible. Improved efficiency.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing an embodiment of the present invention and is a drawing corresponding to FIG. 3 showing a conventional structure, and the same reference numerals as those in FIG. 3 indicate the same or corresponding portions. As shown in FIG. 1, the structure in the vicinity of the connecting portion of the freight car of this embodiment has an MR tube 13 and a BP tube 14
Is pulled up to a predetermined position by the hard pipe 100, and from there to the rear end of the coupler 12 is connected by the soft hose 101, and from here to the position where the movement of the movable part of the coupler 12 is not obstructed, the hard pipe is again returned. The detachable cock 15 is pulled at 100 and the detachable cock 15 is attached to this position, and the corresponding detachable cocks 15 of the couplers 12 are connected by the soft hose 101. With such a structure, when the couplers 12 are connected to each other and travel on a line, the three portions of X, Y, and Z, which are the turning portions in a curve or the like, are set to three.
Can be configured to receive with one soft hose 101, one for each
The looseness of the two soft hose parts 101 as much as possible,
By solving the above-mentioned problems, a freight car with a low floor and a long car body can be obtained.

Further, by adopting the above-mentioned structure, the soft hose 101 at the connecting portion can be placed at the center of the vehicle body which comes into contact with the connecting device 12, and the soft hose 1 can be curved or the like.
Even if a centrifugal force is applied to 01, there is no possibility of protruding from 01.

[0010]

EFFECTS OF THE INVENTION With the structure described above, the present invention has an effect that a low-floor wagon with a long vehicle body that can be operated on the existing orbit without trouble can be obtained, and an efficient piggyback transportation system can be realized. is there.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a diagram for explaining a difference between a container transportation system and a piggyback transportation system.

FIG. 3 is a diagram showing the structure of a conventional freight car of this type.

FIG. 4 is a diagram for explaining a difference in operation due to a difference in vehicle body length.

[Explanation of symbols]

 1 Freight Car 2 Truck 3 Loading Lamp 4 Crossing Board 11 Frame 12 Connector 13 MR Pipe 14 PB Pipe 15 Detaching Cock 100 Hard Pipe 101 Soft Hose

Claims (1)

[Claims] 1. In a freight car for a so-called piggyback transportation system that transports a truck loaded with a load together with a truck, a piping structure of a plurality of air pipes that are simultaneously connected when the freight car and the freight car are connected by a connector, Use a hard pipe to connect to the lower part of the connector, and a soft hose from that position to the tip of the rotating part of the connector at the rear of the connector (the connecting part of the connector is the front). , When connecting from the position to the front of the connecting part of the connector with a hard pipe fixed to the connector and attaching a detachable cock to the tip of this hard pipe, and when connecting the wagon and the wagon with the connector And a means for connecting the attaching / detaching cocks provided on both freight cars with a soft hose, and forming the connector rotating part of the air pipe and the periphery of the connecting part with a soft hose, and the connecting part. By disposing the air tube at the side center of the vehicle body, wagons for piggyback system characterized in that the slack length of the soft hose required minimum.