JP3422737B2 - Girder structure of vehicle deck in single pillar type car carrier - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a girder structure for a vehicle deck of an automobile carrier.

[0002]

2. Description of the Related Art An automobile carrier has a vehicle deck extending over multiple floors, and many vehicles are loaded on each deck, and some 10,000 vehicles are loaded as a whole. For this reason, a large load is applied to the vehicle deck, but the vehicle deck has a structure in which it is attached to the longitudinal girders and transverse girders that are placed inside the ship's barge. It is supported by a plate and a pillar that is erected in the boat in the middle.

For example, as shown in the concept of FIG. 6, a rigid structure having two pillars 1 in a cross section and directly connecting a longitudinal girder 3 and a lateral girder 4 of a vehicle deck 2 to a ship side outer plate 5 and a pillar 1. It is supported by the structure. However, providing a large number of pillars 1
This restricts the passage of vehicles on the vehicle deck 2 and reduces the number of vehicles to be loaded accordingly.

For this reason, as shown in FIG. 7, there has been proposed a structure in which one pillar 1 is provided only in the center of the cross section. Also in this case, the longitudinal girders 3 and the lateral girders 4 of the vehicle deck 2 are rigidly connected to the ship side outer plate 5 and the pillars 1.

On the other hand, the vehicle deck 2 and the cross girders 4 of an automobile carrier must absorb the stress generated when the hull undergoes angular deformation (racking deformation) in waves, and It is necessary to suppress the amount of bending of the vehicle deck 2 and the cross girder 4 due to the load and secure the clear height H of the lower floor.

In consideration of this, as shown in FIG. 8, the longitudinal girders 3 are connected to the pillars 1 by a rigid structure, and the lateral girders 4 above the draft at which the racking deformation of the hull is large are the pillars 1.
Also, a method of connecting to the ship side outer plate 5 by a flexible structure that is not directly connected has been proposed. That is, in FIG. 9, the arrangement of the girders near the pillars is shown in a plan view. 6 is arranged, and the horizontal girder 4 corresponding to the pillar position is connected to the additional vertical girder 6.

However, according to this structure, a large stress is locally concentrated at the connecting point A of the horizontal girder 4 and the additional vertical girder 6 which is the pillar position, and a large bending occurs. In order to eliminate this, to disperse the load applied to the cross beam,
After all, two pillars 1 are provided to deal with this. In the figure, J indicates a flexible structure connection and G indicates a rigid structure connection.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a girder structure on a vehicle deck of an automobile carrier, and in a structure in which one pillar is provided only at the center in a cross section, the flexible structure of the cross girder is provided. The purpose of the present invention is to obtain a girder structure for a vehicle deck that avoids the concentration of local stress due to, distributes the load as a whole, can respond to racking deformation, and can secure the clear height of the lower floors.

[0009]

[Means for Solving the Problems] Inside a ship-side outer plate, a ship-side outer plate-side additional vertical girder is provided through a ship-side outer-plate-side additional horizontal girder, and a lateral girder is provided in the ship-side outer plate-side additional vertical girder. By arranging and connecting so as to be staggered with the ship side outer plate side additional cross girder, while making the cross girder flexible structure connection to the ship side outer plate,
Pillar side additional longitudinal girders are arranged on both sides in the ship width direction of the pillars between the transverse girders that sandwich the pillars on both sides in the longitudinal direction of the hull of the pillars that are erected inside the boat hold. By connecting the cross beam corresponding to the pillar position to
The transverse girder is connected to the pillar with a flexible structure, and a transverse additional member is arranged between the main longitudinal girder passing through the pillar position and the pillar-side additional longitudinal girder, and the transverse girder and the pillar-side additional longitudinal girder are connected. A part of the load applied to the connecting point is received by the lateral addition member.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. The same parts as those of the conventional type are designated by the same reference numerals, and detailed description thereof will be omitted. FIG. 1 is a view showing the concept of a car carrier according to the present invention,
FIG. 2 is a partial plan view showing the arrangement of the girders on the outer shell side of the ship,
FIG. 3 is a plan view showing the arrangement of the girders near the pillar, and FIG.
Is a diagram showing an embodiment of the present invention, and FIG. 5 is a diagram showing another embodiment of the same.

FIG. 1 shows the concept of an automobile carrier of the present invention. In the cross section, one pillar 1 is provided at the center, and the cross girder 4 of the vehicle deck 2 is provided with respect to the pillar 1 and the side plate 5 on the side of the ship. The flexible structure is also connected to. First, as shown in FIG. 2, a ship-side outer plate-side additional vertical girder 7 is arranged inside the ship-side outer plate 5. Between the ship-side outer plate-side additional vertical girder 7 and the ship-side outer plate 5, there are arranged ship-side outer-plate-side additional horizontal girders 4 ″, which are connected to each other. The transverse girders 4 are alternately arranged and connected to the additional lateral girders 4 ″ on the side of the outer shell. That is, the cross girder 4 is connected to the outer shell 5 on the ship side in a flexible structure.

Next, referring to FIG. 3, the main longitudinal girder 3 is directly connected to the pillar 1 as in the conventional type of FIG. 9, but the lateral girder 4 corresponding to the position of the pillar 1 is the hull of the pillar 1. On both sides in the front-rear direction, the pillar-side additional vertical girders 6 which are arranged between the front and rear lateral girders 4'through which the pillar 1 is sandwiched are connected. Reference numeral 8 denotes a horizontal addition member disposed between the main vertical girder 3 and the pillar-side additional vertical girders 6 before and after the connection point A of the horizontal girder 4 and the pillar-side additional vertical girders 6.

FIG. 4 shows an embodiment of the present invention, and FIG. 4 (A) shows a case where a cross beam 4'is passed close to the pillar 1 and only one side is provided on the front and rear sides of the pillar 1. This is an example in which the lateral addition member 8 is arranged in the. Pillar 1 is shown in FIG.
When the horizontal girder 4 is not arranged with respect to the center of
In addition, the lateral addition members 8 arranged on both front and rear sides of the pillar 1 are an example in which they are not arranged at equal intervals with respect to the pillar 1.

FIG. 5 shows another embodiment of the present invention in which the main longitudinal girder 3 is not provided in the center of the boat.
FIG. 5 (A) is an example in which a vertical additional member 9 is arranged between the pillar 1 and the horizontal additional member 8 arranged between the pillar-side additional vertical girders 6 to connect the girders to the pillar. FIG. 5B shows the horizontal addition member 8
In this example, the vertical addition members 9 are provided also between the horizontal girders 4'corresponding to the positions of the pillars 1 and the horizontal girders 4'on both front and rear sides.

In the example of FIG. 5, the main vertical girder 3 at the center of the boat is not provided, and the pillar-side additional vertical girder 6 passes through in the longitudinal direction of the hull. In other words, it is in the same state as having two main stringers spaced apart in the center, in which case the stringers are also flexible connected to the pillars. As described above, the horizontal addition member 8 and the vertical addition member 9 may be arranged in various forms depending on the case.

The girder structure of the vehicle deck 2 according to the present invention is as described above. Therefore, since the horizontal additional member 8 is arranged between the pillar-side additional vertical girder 6 connecting the horizontal girders 4 and the main vertical girder 3 connected to the pillar 1, the horizontal girder 4 and the pillar-side additional vertical girders 6 are connected. The load acting on the connection point A can be partially supported by the lateral addition member 8.

Further, inside the ship-side outer plate 5, a ship-side outer plate-side additional vertical girder 7 is provided via a ship-side outer plate-side additional lateral girder 4 ", and the lateral girder 4 is added to the ship-side outer plate-side additional vertical girder 7. Since they are alternately arranged and connected to the additional lateral girders 4 "on the side of the outer shell, the load applied to the lateral girders 4 is received by the outer shell 5 of the side with a flexible structure. Therefore, the load applied to the cross beam is dispersed and applied to the pillar 1 side and the ship side outer plate 5 side as a whole.

[0018]

INDUSTRIAL APPLICABILITY According to the present invention, in the girder structure on the vehicle deck of an automobile carrier, the transverse girders are connected to the pillars and the outer shell of the ship by a flexible structure, and the main longitudinal girders are connected to the front and rear sides of the pillars. A horizontal additional member is placed between the pillar-side additional girder to distribute the load applied to the girder, and avoid locally concentrating stress at the connection point between the horizontal girder and the pillar-side additional girder. I was able to. Therefore, even with the single pillar structure, it is possible to sufficiently cope with the racking deformation of the hull and to secure the clear height of the lower floors.

[Brief description of drawings]

FIG. 1 is a diagram showing the concept of an automobile carrier according to the present invention.

FIG. 2 is a partial plan view showing the arrangement of the girders on the ship side outer plate side.

FIG. 3 is a plan view showing an arrangement of girders near a pillar.

FIG. 4 is a diagram showing an embodiment of the present invention.

FIG. 5 is a diagram showing another embodiment of the present invention.

FIG. 6 is a diagram showing a concept of a conventional two-pillar type automobile carrier.

FIG. 7 is a view showing the concept of a conventional single-pillar type automobile carrier.

FIG. 8 is a view showing a concept of a conventional two-pillar type automobile carrier in which transverse girders are connected in a flexible structure.

FIG. 9 is a plan view showing an arrangement of conventional girders in which a horizontal girder is connected to a pillar in a flexible structure.

[Explanation of symbols]

1 Pillar 2 Vehicle deck 3 Main vertical girder 4 Horizontal girder 5 Ship side outer plate 6 Pillar side additional vertical girder 7 Ship side outer plate side additional vertical girder 8 Horizontal additional member 9 Vertical additional member A Connection between horizontal girder and pillar side additional vertical girder Point J Flexible structure connection G Rigid structure connection

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B63B 3/52 B63B 25/00

Claims (3)

(57) [Claims] 1. In a car carrier having a structure in which one pillar is provided in the center in a cross section of a ship, a ship side outer plate side additional vertical girder is provided inside a ship side outer plate through a ship side outer plate side additional girder. , The transverse girders are arranged in a staggered manner on the ship side outer plate side additional girders so as to be staggered with the ship side outer plate side additional girders, so that the transverse girders are connected to the ship side outer plate with a flexible structure. At the same time, the pillar-side additional vertical girders are arranged between the lateral girders of the pillars erected in the ship's barge on both sides in the longitudinal direction of the hull, and the lateral girders at pillar positions are connected to the pillar-side additional vertical girders Thus, the horizontal girder is connected to the pillar in a flexible structure, and a horizontal additional member is arranged between the main vertical girder passing through the pillar position and the pillar-side additional vertical girder. Girder structure of vehicle deck in car carrier. 2. The girder structure for a vehicle deck in a one-pillar car carrier according to claim 1, wherein a lateral additional member is arranged only on one side of the pillar in the longitudinal direction of the hull. 3. A horizontal additional member is arranged between the pillar-side additional vertical girders arranged on both sides of the pillar, and the main vertical girder at the center of the ship's barge is omitted, and between the pillar and the horizontal additional member, or only on one side. The vehicle in a one-pillar car carrier according to claim 1 or 2, wherein, when the lateral additional member is arranged, a vertical additional member is provided between the pillar and the lateral additional member and between the cross girder. Deck girder structure.