JPH0620189U - Air passage structure of a freezing ship - Google Patents

Abstract

(57) [Summary] [Purpose] An air duct structure for cold air that is fixedly installed in the cargo hold of a ship that transports refrigerated cargo. An air passage structure for a refrigerating ship, which secures a road cross-sectional area, has a horizontal wooden grating upper surface, and does not generate noise during a forklift traveling on the wooden grating upper surface. [Structure] Unequal chevron steel 2 that is the side wall of the air passage, wooden joist 3 laid on the short side of the unequal chevron steel 2, and wooden joist 3
A presser bolt 4 and a nut 5 for fixing one side of the unequal angle steel 2, a wooden grating 6 for arranging the air holes 10 and a screw nail 7 for nailing the wooden grating 6 on the wooden joist 3. The air passage structure of a refrigerated ship.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air duct structure for cold air that is fixedly installed in a cargo hold of a ship that transports refrigerated cargo. More specifically, it relates to an air duct structure of a refrigerating ship involving a combination of wood and steel. It is related.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 3, in the case of a wooden structure as this type of air passage structure, a stud bolt 22 is welded upright on a steel deck 21, and the stud bolt 22 is used as a side wall of the air passage. It has a structure in which it is inserted through a hole, tightened with a nut 24 and fixed, and a wooden grating 26 having a vent hole 28 is nailed with a screw nail 27, or made of steel only or aluminum alloy only. What is known is.

[0003]

[Problems to be solved by the device]

 Among those described in the prior art, in the case of the structure only made of wood, in order to secure the strength sufficiently, the pitch of the wood joists forming the side wall of the air passage must be made small and the thickness of the wood joists must be made large. However, there was a problem that the effective cross-sectional area of the air passage was significantly reduced.

In addition, in the structure in which the steel joist is used to construct the air duct, the joist has sufficient strength even if the thickness of the joist is small and it is easy to secure an effective cross-sectional area of the air duct. Since steel gratings are installed on the steel grating, it is difficult to secure the levelness of the upper surface of the steel gratings, and noise is emitted when the forklift traveling on the upper surface of the wooden gratings for cargo handling. In addition, there is a problem in that the height of the refrigerated cargo may rise or fall when it is superimposed on the steel grating.

Further, in the structure in which the air duct is formed by using the joist made of aluminum alloy, although the strength is sufficient and the effective cross-sectional area of the air duct is easily secured even if the thickness of the joist is reduced, Since only the joists and the aluminum alloy grating are integrated on the heat-insulating deck, the forklift traveling for cargo handling on the aluminum alloy grating. It sometimes had the problem of making noise.

The present invention has been made in view of the above problems of the conventional technology, and the purpose thereof is to reduce the thickness of joists and ensure a sufficiently wide air passage cross-sectional area. Moreover, it is an object of the present invention to provide an air passage structure for a refrigerating ship that makes it easy to secure the levelness of the upper surface of the grating deck and does not generate noise when the forklift runs.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the wind channel structure of a refrigerating ship according to the present invention is an unequal angle steel which becomes a side wall of the air channel, a wooden joist laid on the short side of the unequal angle steel, and the wooden joist. The short side of the angle iron steel Is welded upright to the steel deck with the long side of the long side edge facing downward, and the long side of the unequal angle angle steel is used as the airway side wall.

[0008]

[Action]

 The long sides of the unequal angle angle steel that form the side wall of the air passage ensure a large effective cross-sectional area of the air passage, and the wooden joists on the short sides increase the height of the air passage side wall from the steel deck that does not maintain horizontality. Adjustment is easy.

[0009]

【Example】

 Examples will be described with reference to the drawings.

In FIG. 1 and FIG. 2, the long side edge of the unequal helix angle steel 2 is erected vertically on the steel deck 1 and welded.

A wooden joist 3 having a rectangular cross section is laid on the short side of the unequal angle steel, and a presser bolt 4 is inserted through the counterbore hole of the wooden joist 3 into the short side of the unequal angle steel to hold it down. Secure the wooden joist 3 to the short side of the unequal angle angle steel with the bolt 4 and the nut 5.

When forming the air passage on the heat insulating deck, a desired heat insulating material 8 is spread on the steel deck 1, and a wooden plywood 9 is laid on the heat insulating material 8. A wooden deck 9 is laid while maintaining a space, and a liquid serving as a heat insulating material is injected between the wooden plywood 9 and the steel deck 1 to foam.

A levelness of the upper surface of the wooden joist 3 is ensured, and a wooden grating 6 having air holes 10 is laid on the leveled wooden joist 3 and a wooden nail is screwed with a screw nail 7. Nail the Ching 6 to the wooden joist 3.

[0014]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. Since the thickness of the long side of the unequal angle angle steel that is the side wall of the air passage is much thinner than the side wall made of wooden joists, the effective cross-sectional area of the air passage can be secured, and the joists that receive wooden grating are made of wood. It is easy to secure the levelness on the wooden joists.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of a separate embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view of a prior art air duct structure.

[Explanation of symbols]

 1 Steel deck 2 Hexagonal angle steel 3 Wooden joist 4 Presser bolt 5 Nut 6 Wooden grating 7 Screw nail 8 Heat insulating material 9 Wooden plywood 10 Ventilation hole

Claims (1)

[Scope of utility model registration request] 1. A wind channel structure for cold air, which is fixedly installed in a cargo hold of a ship that transports refrigerated cargo, wherein the side wall of the wind channel is an unequal angle steel, and a short side of the unequal angle steel. A wooden joist to be laid on the floor, a holding bolt and a nut for fixing the wooden joist on the short side of the unequal angle steel, a wooden grating with air holes, and a screw nail for fastening the grating to the wooden joist. The air passage structure of a refrigerating ship, which is characterized in that