JPS6344381Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a floor structure for a tunnel recess type insulated container, and particularly to a structure that can increase the internal height of such a container.

In general, for insulated containers such as refrigerated containers that are loaded on low-floor trailers for transportation, the front part of the trailer can be made as low as the rear part due to the relationship with the tractor coupling part. For this reason, the front part was made higher than the rear part,
Since the structure is called a gooseneck, a tunnel recess that fits into the gooseneck of the trailer is provided on the lower surface of the front floor of the container with a predetermined length in the front-rear direction.

Incidentally, in such a tunnel recess type heat insulating container, a heat insulating material layer having a predetermined thickness required by the heat insulating properties of the container is usually provided over the entire wall surface including the floor of the container. A tunnel plate, which forms the tunnel recess along with the cross member, is provided below the heat insulating layer of the floor, but the height of such a tunnel plate is determined by ISO standards. Considering that the total height of containers is regulated, the internal height of such insulated containers will inevitably be restricted.
For this reason, it is desired to take some measure to increase the internal dimensions.

By increasing the height and inner dimensions of the container, in other words, by increasing the inner height, the amount of cargo that can be stored and transported in such an insulated container can be reduced.
This is because the amount can be further increased.

The present invention was developed against this background, and its purpose is to provide a tunnel recess type insulated container that can secure a larger inner height than conventional containers. It's about doing.

In order to achieve this object, in the present invention, in a floor structure in which a tunnel recess is provided on the lower surface of the front floor of an insulated container, only the upper surface portion of the tunnel plate that forms the tunnel recess is removed. , the tunnel plate and the insulation layer are configured to overlap at a predetermined height in the container height direction, and the thickness of the insulation layer is The reason is that the thickness is made thin only on the tunnel plate.

Hereinafter, in order to clarify the present invention more specifically, embodiments shown in the drawings will be described in detail.

First, FIG. 1 shows a perspective view of a tunnel recess type heat insulating container 2 to which the present invention is applied.
A tunnel recess 4 is formed having a predetermined width and extending a predetermined distance in the longitudinal direction of the container, and a gooseneck of a low-floor trailer can be fitted into the tunnel recess 4.

By the way, the tunnel recess portion 4 is
As shown in the figure, it is formed of a tunnel plate 6 that has a hat-shaped cross section that provides the depth specified by the ISO standard. On the other hand, a heat insulating layer 8 with a predetermined thickness is provided on the floor of the container 2, and a floor rail 10 with a predetermined height is installed on the floor above the heat insulating layer 8 in the longitudinal direction of the container. It is located in In addition, the height of this floor rail 10 will be determined by the refrigerator with which the heat insulation container 2 is equipped.

Further, cross members 12 extending in the width direction of the container are provided on both sides of the tunnel plate 6, and by providing a step between the cross members 12 and the tunnel plate 6, as shown in FIG. Like, tunnel plate 6
Only the upper surface portion of the container is provided so as to be inserted into the heat insulating layer 8 of the container floor. In other words, the tunnel plate 6 is attached so that the tunnel plate 6 and the heat insulating layer 8 overlap at a predetermined height: t in the container height direction.

Therefore, in such a structure, even if the height of the tunnel plate 6 is set to the height specified by the ISO standard, a portion (t) of the height may become apparent due to polymerization with the heat insulating material layer 8. As a result, the conventional heat insulating material layer 8
The height can be made lower than the sum of the thickness of the tunnel plate 6 and the height of the tunnel plate 6.
This made it possible to effectively increase the internal height (dimensions) of a container, which had a fixed overall height, and in turn, it became possible to increase the cargo carrying capacity.

Note that the overlap t between the tunnel plate 6 and the heat insulating material layer 8 will be appropriately determined depending on the heat insulating properties, but if the value is too large, the tunnel recess portion 4 will be damaged. In the present invention, it is generally desirable not to exceed approximately 1/2 of the thickness of the heat insulating material layer 8, since this will have a negative effect on the heat insulating effect. Also, thickness of insulation layer 8: 75mm
However, the overlapping part: t is set to be 35 mm. In this way, the overlap between the tunnel plate 6 and the heat insulating material layer 8 is realized within a limited range, and the thickness of the insulating material layer 8 is maintained at a predetermined thickness for heat insulation. However, considering the area of the floor and the area of the entire container 2,
The area occupied by the tunnel recess 4 is extremely small, and therefore does not adversely affect the insulation inside the container 2.

As described above, according to the present invention, a step is provided between the tunnel plate 6 and the cross member 12, and the upper surface portion of the tunnel plate 6 has a predetermined height within the heat insulating material layer 8 only at that portion. Although the internal height of the heat insulating container 2 can be effectively increased by being inserted by t, the present invention is by no means to be construed as being limited to the structure of this embodiment. Based on the knowledge of those skilled in the art, the present invention may be implemented in forms with various changes, modifications, improvements, etc., as long as it does not depart from the spirit thereof. It goes without saying that the scope also includes things in form.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a tunnel recess type heat insulating container to which the present invention is applied, and FIG. 2 is a schematic cross-sectional view of the front floor of the container showing the tunnel recess. 2: Tunnel recess type insulation container, 4: Tunnel recess, 6: Tunnel plate, 8: Heat insulation layer, 10: Floor rail, 12: Cross member.

Claims (1)

[Scope of utility model registration request] In a floor structure in which a tunnel recess is provided on the lower surface of the front floor of an insulated container, only the upper surface portion of the tunnel plate forming the tunnel recess is inserted into a heat insulating material layer provided in the floor of the insulated container. , characterized in that the tunnel plate and the heat insulating material layer are configured to overlap at a predetermined height in the container height direction, so that the thickness of the heat insulating material layer becomes thinner only on the tunnel plate. Floor structure of a tunnel recess type insulated container.