CN115783115A

CN115783115A - Method for reinforcing special cabin box feet of multipurpose ship

Info

Publication number: CN115783115A
Application number: CN202211463477.4A
Authority: CN
Inventors: 陈毓珍; 王德安; 张云风; 钱欣玉
Original assignee: Shanghai Merchant Ship Design and Research Institute
Current assignee: Shanghai Merchant Ship Design and Research Institute
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-03-14

Abstract

The invention discloses a method for reinforcing special cabin box feet of a multipurpose ship, which comprises the following steps: the bottom of the inner bottom of the cargo hold is fixedly provided with a plurality of transversely extending solid rib plates, the distances between the adjacent solid rib plates are equal, and the standard hold length of the cargo hold is determined; the bottom of the cargo hold inner bottom is fixedly provided with a plurality of longitudinally extending side girders, and the upper surface of the cargo hold inner bottom is fixedly provided with a box foot for supporting the container; and arranging the box legs above the joints of the solid rib plates and the side truss materials. The invention can reduce the workload of later detailed design reinforcement and the workload of shipyard construction, and achieve the purpose of reducing weight, thereby reducing the design weight, the workload of welding, the cost of shipyard and improving the economy of ships.

Description

Method for reinforcing special cabin inner box feet of multipurpose ship

Technical Field

The invention relates to the technical field of ships, in particular to a method for reinforcing special cabin box feet of a multipurpose ship.

Background

The multipurpose ship has various functions of loading bulk cargo, containers, steel coils and the like in function, and the conventional cargo hold framework form has no standard longitudinal frame arrangement. However, when loading a container, the reinforcement of the container legs is required to have its particularity due to the particularity of the size of the container. The general box leg reinforcement only considers the arrangement of the stringers in the width direction of the container ship, and has the randomness of transverse toggle plate support.

The design of a ship is a complex and individualized process. And in particular multipurpose vessels, are typically individually designed based on the needs of the owner. In earlier designs, the cargo holds were generally sized only to meet loading requirements. This is applicable to multipurpose vessels that carry generally large pieces and bulk cargo. However, for the multipurpose ship for loading the containers, the reinforcement of the embedded box feet is considered and evaluated during the arrangement in the design of the earlier scheme, and the arrangement of the rib pitch of the ship is sufficiently refined, so that the design of the light weight of the ship and the optimization of the workload of a shipyard are necessary.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a special cabin inner box foot reinforcing method for a multipurpose ship.

The invention solves the technical problems through the following technical scheme:

a method of reinforcing a special inboard box leg of a multipurpose vessel, comprising: step 1, fixedly arranging a plurality of transversely extending solid rib plates at the bottom of an inner bottom of a cargo hold, wherein the distances between adjacent solid rib plates are equal, determining the standard hold length L of the cargo hold, and the calculation formula is L = S multiplied by N multiplied by 4, wherein S is the distance between the adjacent solid rib plates, and N is the number of rows of containers in the cargo hold; step 2, fixedly arranging a plurality of longitudinally extending side girders at the bottom of the inner bottom of the cargo hold, and fixedly arranging box feet for supporting the container on the upper surface of the inner bottom of the cargo hold; and arranging the box foot above the joint of the solid rib plate and the side truss material.

An inner bottom longitudinal frame is arranged on the outer side of the side truss material and fixedly connected to the bottom of the inner bottom of the cargo hold.

And a toggle plate is arranged below the tank feet, and the top of the toggle plate is fixedly connected with the bottom of the inner bottom of the cargo hold.

Two ends of the toggle plate are respectively and fixedly connected with the side truss material and the inner bottom longitudinal bone.

The two toggle plates below the box legs are respectively arranged on two sides of the solid rib plate.

In step 1, the distance S between the adjacent solid ribs is 1533 +/-2 mm.

The center of the box foot is positioned on the intersection line of the solid rib plate and the inner bottom of the cargo hold.

The distance from the intersection point of the solid rib plate and the side truss material below the box foot to the center point of the box foot is 125-135 mm.

The box feet of each row are positioned above the same solid rib plate; the distance between the centers of two adjacent rows of box legs is 6132 +/-4 mm.

The distance between the containers along the length direction of the ship is 70-80 mm.

The invention has the beneficial effects that: according to the standard sizes of the 20TEU and 40FEU containers, the optimized space between the solid rib plates is established, the workload of later detailed design and reinforcement and the workload of shipyard construction are reduced, the purpose of reducing weight is achieved, the design is light, the workload of welding is reduced, the shipyard cost is reduced, and the economy of ships is improved.

Drawings

FIG. 1 is a top view of a cargo compartment in accordance with a preferred embodiment of the present invention.

FIG. 2 is a top view of the box pin structure in accordance with the preferred embodiment of the present invention.

Fig. 3 isbase:Sub>A schematic sectional view taken along linebase:Sub>A-base:Sub>A in fig. 2.

Detailed Description

The present invention will be more clearly and completely described in the following description of preferred embodiments, taken in conjunction with the accompanying drawings.

As shown in fig. 1, 2 and 3, a method for reinforcing a special inboard box leg of a multipurpose boat, comprising:

step 1, fixedly arranging a plurality of transversely extending solid rib plates 11 at the bottom of an inner bottom 10 of a cargo hold, wherein the distances between the adjacent solid rib plates 11 are equal, and determining the standard hold length L of the cargo hold, wherein the calculation formula is L = S multiplied by N multiplied by 4, wherein S is the distance between the adjacent solid rib plates, and N is the row number of containers in the cargo hold. The spacing S between adjacent solid ribs is 1533 + -2 mm.

Step 2, fixedly arranging a plurality of longitudinally extending side girders 12 at the bottom of the cargo hold inner bottom 10, and fixedly arranging box feet 20 for supporting a container on the upper surface of the cargo hold inner bottom 10; the box foot 20 is provided above the joint between the solid rib plate 11 and the side rail 12.

An inner bottom longitudinal frame 13 is provided on the outer side of the side rail 12, and the inner bottom longitudinal frame 13 is fixed to the bottom of the cargo compartment inner bottom.

Below the tank feet 20, a toggle plate 14 is provided, the top of the toggle plate 14 being secured to the bottom of the cargo tank bottom 10. The toggle plate 14 is fixedly connected at both ends thereof to the side rail 12 and the inner bottom longitudinal frame 13, respectively.

Two toggle plates 14 are arranged below the box foot 20, and the two toggle plates 14 are respectively arranged at two sides of the solid rib plate 11.

The center of the bin foot 20 is located at the intersection of the solid rib and the inner bottom of the cargo compartment.

In order to facilitate construction and welding, the distance from the intersection point of the solid rib plate and the side truss material below the box foot to the central point of the box foot is 125-135 mm. Preferably, the distance from the intersection point of the solid rib plate and the side truss material below the box foot to the center point of the box foot is 130mm.

The box legs of each row are positioned above the same solid rib plate; the distance between the centers of two adjacent rows of box legs is 6132 +/-4 mm.

The distance between the containers along the ship length direction is 70-80 mm, and preferably, the distance between the containers along the ship length direction is 76mm.

The containers in the technical scheme are standard 20TEU containers and 40FEU containers. The corner spacing of a standard 20TEU container is 5853 + -4 mm, and the foot spacing of a standard 40FEU container is 11985 + -4 mm. In order to maximally load containers, the feet of the 20TEU container and the 40FEU container are shared, and the distance between the containers along the ship length direction is uniformly adopted for 76mm, so that the disordered loading and unloading of the containers with two sizes are fully met.

According to the characteristics, the technical scheme provides a scheme suitable for a multipurpose ship for loading containers, wherein the space between adjacent solid ribs is S =1533 +/-2 mm, the number of rows of the containers in the cargo hold is assumed to be N, and the calculation formula of the standard cabin length L of the cargo hold is L = S multiplied by N multiplied by 4.

The invention sets the standard rib spacing and the cargo hold length, optimizes the length of the cargo hold in arrangement and realizes the arrangement optimization of the standardized multi-purpose ship loading container.

According to the invention, the box feet are seated on the cross reinforced corners of the solid rib plates and the side truss materials, and only one side is added for reinforcement, so that steel is saved, and the construction workload of a shipyard is reduced.

According to the standard sizes of the 20TEU and 40FEU containers, the optimized space between the solid rib plates is established, the workload of later detailed design and reinforcement and the workload of shipyard construction are reduced, the purpose of reducing weight is achieved, the design is light, the workload of welding is reduced, the shipyard cost is reduced, and the economy of ships is improved.

While specific embodiments of the invention have been described above, it will be understood by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. A method of reinforcing a special inboard box leg of a multipurpose vessel, comprising: step 1, fixedly arranging a plurality of transversely extending solid rib plates at the bottom of an inner bottom of a cargo hold, wherein the distances between adjacent solid rib plates are equal, and determining the standard hold length L of the cargo hold, wherein the calculation formula is L = S multiplied by N multiplied by 4, S is the distance between the adjacent solid rib plates, and N is the number of rows of containers in the cargo hold; step 2, fixedly arranging a plurality of longitudinally extending side girders at the bottom of the inner bottom of the cargo hold, and fixedly arranging box legs for supporting the container on the upper surface of the inner bottom of the cargo hold; and arranging the box foot above the joint of the solid rib plate and the side truss material.

2. The special inboard box leg reinforcing method of multipurpose boat as claimed in claim 1, wherein an inner bottom longitudinal frame is provided outside the side girder, and the inner bottom longitudinal frame is fixed to the bottom of the inner bottom of the cargo hold.

3. Method for reinforcing the special inboard box feet of a multipurpose ship as claimed in claim 2, characterized in that under the box feet there are provided toggle plates, the top of which is fastened to the bottom of the inboard bottom of the cargo hold.

4. Method for reinforcing the feet of a multipurpose vessel, in particular a cabin, according to claim 3, characterized in that the toggle plate is fastened at its two ends to the side girders and to the inner bottom longitudinals, respectively.

5. A method of reinforcing a special inboard box leg of a utility boat as claimed in claim 3 wherein there are two toggle plates under the box leg, the two toggle plates being respectively disposed on both sides of the solid rib plate.

6. The method for reinforcing the special cabin box feet of the multipurpose ship according to claim 1, wherein in the step 1, the space S between the adjacent solid ribs is 1533 ± 2mm.

7. Method for reinforcing the special inboard box feet of a multipurpose boat as claimed in claim 1, wherein the center of the box feet is located at the intersection of the solid rib and the inner bottom of the cargo hold.

8. The method for reinforcing a special under-deck box leg of a multipurpose boat as recited in claim 7, wherein a distance from an intersection of the solid rib and the side girder under the box leg to a center point of the box leg is 125 to 135mm.

9. The method of claim 1, wherein the legs of each row are located above the same solid rib plate; the distance between the centers of two adjacent rows of box legs is 6132 +/-4 mm.

10. The special inboard leg reinforcing method of the multipurpose vessel as claimed in claim 1, wherein the interval between the containers in the length direction of the vessel is 70 to 80mm.