阅读说明：本技术 一种船舶纵骨端部的连接结构及连接方法 (Connecting structure and connecting method for ship longitudinal frame end part ) 是由 甘水来 黄祖钦 华佳 程晓军 杨政澔 陈菲 于 2021-07-21 设计创作，主要内容包括：本发明公开了一种船舶纵骨端部的连接结构及连接方法,船舶包括第一待连接板和第二待连接板,第一待连接板的侧壁设有若干个第一纵骨,第二待连接板的侧壁设有若干个第二纵骨；连接结构包括中间部、第一肘板和第二肘板,中间部位于第一待连接板和第二待连接板之间,且中间部至少部分与第二待连接板平行；第一肘板的两端分别与中间部和第一纵骨连接,且第一肘板沿着第一纵骨延伸；第二肘板的两端分别与中间部和第二纵骨连接,且第二肘板沿着第二纵骨延伸。采用本发明,中间部能够作为第一肘板和第二肘板的支撑结构,并实现第一待连接板和第二待连接板之间力的有效连续传递；不但能够形成平直连接结构,实现力的有效传递,更有利于生产现场的施工。(The invention discloses a connecting structure and a connecting method for the end parts of ship longitudinal bones, wherein a ship comprises a first plate to be connected and a second plate to be connected, the side wall of the first plate to be connected is provided with a plurality of first longitudinal bones, and the side wall of the second plate to be connected is provided with a plurality of second longitudinal bones; the connecting structure comprises a middle part, a first toggle plate and a second toggle plate, wherein the middle part is positioned between the first plate to be connected and the second plate to be connected, and at least part of the middle part is parallel to the second plate to be connected; the two ends of the first toggle plate are respectively connected with the middle part and the first longitudinal bone, and the first toggle plate extends along the first longitudinal bone; the second toggle plate is connected at both ends thereof to the intermediate portion and the second longitudinal frame, respectively, and extends along the second longitudinal frame. By adopting the invention, the middle part can be used as a supporting structure of the first toggle plate and the second toggle plate, and the effective and continuous transmission of force between the first plate to be connected and the second plate to be connected is realized; not only can form a straight connection structure, realize the effective transmission of force, but also is more beneficial to the construction of a production field.)

1. A connecting structure of ship longitudinal frame ends is characterized in that a ship comprises a first to-be-connected plate and a second to-be-connected plate, the first to-be-connected plate and the second to-be-connected plate are arranged oppositely, a plurality of first longitudinal frames are arranged on the side wall, facing the second to-be-connected plate, of the first to-be-connected plate, and a plurality of second longitudinal frames are arranged on the side wall, facing the first to-be-connected plate, of the second to-be-connected plate; it is characterized in that the preparation method is characterized in that,

the connecting structure comprises an intermediate part, a first toggle plate and a second toggle plate, wherein the intermediate part is positioned between the first plate to be connected and the second plate to be connected, and the intermediate part is at least partially parallel to the second plate to be connected;

the two ends of the first toggle plate are respectively connected with the middle part and the first longitudinal bone, and the first toggle plate extends along the first longitudinal bone; the second toggle plate is connected at both ends thereof to the intermediate portion and the second longitudinal bone, respectively, and extends along the second longitudinal bone.

2. The connecting structure for the end portion of the ship's stringer according to claim 1, wherein said first stringer includes a first web and a first panel, and said first toggle plate is connected to said first panel and extends in the direction of the plane of said first web until it is connected to said intermediate portion;

the second longitudinal frame comprises a second web and a second panel; the second toggle plate is connected to the second panel and extends in the direction of the plane of the second web until it is connected to the intermediate portion.

3. The connecting structure of the ship longitudinal end portion according to claim 1, wherein the first longitudinal frame is arranged in accordance with the line shape of the first board to be connected, and an angle between the first longitudinal frame and the first board to be connected is not less than 75 °; the plurality of second longitudinal bones are perpendicular to the plane of the second plate to be connected and are arranged at equal intervals.

4. The marine vessel longitudinal end connecting structure according to claim 1, wherein the intermediate portion passes through at least a midpoint between one of the first longitudinal bones and a second longitudinal bone corresponding to the first longitudinal bone.

5. The connecting structure for the longitudinal frame end portions of a ship according to claim 1, wherein both ends of the intermediate portion extend between the first plate to be connected and the second plate to be connected, and are fixedly connected to a hull structure of the ship, so that the plurality of first longitudinal frames and the plurality of second longitudinal frames are connected to the intermediate portion.

6. The connecting structure for the end of the ship's longitudinal frame according to claim 1, wherein the first toggle plate is connected with the first plate to be connected through a soft-toe transition, and the first toggle plate is fixedly connected with the middle part; the second toggle plate is in transition connection with the second to-be-connected plate through a soft toe, and the second toggle plate is fixedly connected with the middle part.

7. The connecting structure of the ship longitudinal end portion of any one of claims 1 to 6, wherein the first plate to be connected is an outer plate of the ship, and the second plate to be connected is an inclined plate which is provided in the ship and is located on one side of the outer plate;

the middle part comprises a first area, a second area and a third area which are sequentially distributed, and the plane where the second area is located is parallel to the plane where the second to-be-connected plate is located; one end of the first area is connected with one end of the second area, and the other end of the first area penetrates through the middles of the outer plate and the inclined plate and is connected with the hull of the ship; one end of the third area is connected with one end of the second area, and the other end of the third area penetrates through the middles of the outer plate and the inclined plate and is connected with the ship body of the ship.

8. A method of connecting ship longitudinal ends, characterized in that the method is used for manufacturing a connecting structure of a ship longitudinal end according to any one of claims 1 to 7; the connection method comprises the following steps:

s1: arranging the middle part between the first to-be-connected plate and the second to-be-connected plate, and enabling the middle part to be at least partially parallel to the second to-be-connected plate;

s2: providing the first toggle between the intermediate portion and the first longitudinal bone, the first toggle extending along the first longitudinal bone;

s3: the second toggle plate is disposed between the intermediate portion and the second longitudinal bone, and the second toggle plate extends along the second longitudinal bone.

9. The method for connecting ship longitudinal ends according to claim 8, wherein the S1 includes: the intermediate portion passes through at least a midpoint between one of the first longitudinal bones and a second longitudinal bone corresponding to the first longitudinal bone.

10. The method according to claim 8, wherein the first plate to be connected is an outer plate of the ship, and the second plate to be connected is an inclined plate provided in the ship on one side of the outer plate;

the connection method further comprises:

s01: dividing the intermediate portion into a first region, a second region, and a third region according to the contours of the outer plate and the swash plate;

s02: the plane where the second area is located is parallel to the plane where the second to-be-connected plate is located;

s03: one end of the first area is connected with one end of the second area, and the other end of the first area penetrates through the middles of the outer plate and the inclined plate;

s04: one end of the third area is connected with one end of the second area, and the other end of the third area penetrates through the middles of the outer plate and the inclined plate.

Technical Field

The invention belongs to the field of ship manufacturing, and particularly relates to a connecting structure and a connecting method for ship longitudinal frame ends.

Background

For conventional tankers and bulk carriers, generally, the line shape of the outer plates changes continuously from the stern cargo tank (the last cargo tank) to the stern and from the bow cargo tank (the foremost cargo tank) to the bow, except for the parallel mid-body (the middle part of the hull having the same cross section). In particular, the linear change of the bilge (the connection between the bottom and the side) is more prominent. As shown in fig. 1, the outer panel 012 changes in line shape, so that the angle 013 between the outer panel longitudinal web 011 and the outer panel 012 changes in cross section. As shown in fig. 2 and 3, bilge portions of oil tankers and bulk carriers each have a bottom tank 023, which is generally a single hull, and inclined plates 021 (inclined bulkheads) of the bottom tank are connected to an outer plate 022 and an inner floor 024, respectively; the oil tanker is of a double-shell structure, and the inclined plates 021 of the bottom side tank are respectively connected to the longitudinal walls (also called inner shell longitudinal walls) of the side tank and the inner bottom plate 024.

For a large ship, the structural form in the bottom side tank 035 is a longitudinal skeleton, the strengthening material on the outer plate 033 is a longitudinal bone 034, and the strengthening material on the bottom side tank inclined plate 031 is also a longitudinal bone 032. At the watertight transverse bulkheads or watertight ribs, the ends of these longitudinals 032, 034 will be firmly connected with the transverse hull structure to form a rigid fixed end. In the existing large-sized ship, a cabin is arranged at the tail part of the ship and is positioned between the back wall of a cargo hold and a tail tip cabin wall, and the cabin is divided into a watertight space by a front watertight cabin wall and a rear watertight cabin wall so as to install machine equipment and the like. Due to energy savings and speed requirements, the bilge lines in the aft cargo space and cabin area are relatively thin, and the bottom side cabin sloping panels 031 at the front cabin wall 041 (the forward transverse cabin wall of the cabin, i.e., the aft cargo space rear wall) are relatively close to the outer panels 033. The bottom side cabin sloping plate stringer 032 terminating at the front wall of the cabin, the connection of its end to the outer plate stringer 034 at the front wall of the cabin, is typically made by connecting it to the corresponding outer plate stringer 034 with an L3 type toggle 042 (a toggle composed of a web and a stiffener on the web), as shown in fig. 4. The outer plate longitudinal bones 034 are arranged according to the linear change of the outer plate 033, and the outer plate at the front wall of the cabin is a bidirectional curved surface, so that the included angle between the longitudinal bones 034 on the outer plate and the outer plate 033 is continuously changed. The sloping plate 031 of the bottom side compartment is a plane, and the longitudinal ribs 032 on the sloping plate 031 are perpendicular to the plane of the sloping plate 031 and are arranged at equal intervals. Therefore, in the outer plate longitudinal rib 034 and the bottom side cabin sloping plate longitudinal rib 032 connected by the elbow plate 042 in fig. 4, the web surfaces are not generally parallel to each other, and according to the solid geometry theory, two lines which are not parallel spatially are coplanar with each other, and they cannot be in the same plane, so that the web surfaces of the elbow plate connecting the two longitudinal ribs must be twisted. That is, as shown in fig. 5, in the area of the cargo tank of the tanker or the bulk carrier, since the outer panel 033 is a two-way curved surface whose curvature is changed constantly, the intersection line of the web 037 of the outer panel longitudinal frame and the panel 038 in the bottom side tank 035 and the intersection line of the web 039 of the bottom side tank swash plate longitudinal frame and the panel 040 are spatially non-coplanar straight lines, which determines that the end portions of the outer panel longitudinal frame 032 of the bottom side tank and the longitudinal frame 032 of the swash plate cannot be connected to each other at the tank front wall by a flat bracket.

The web thickness of the toggle plate (often called as crescent toggle plate) in a large ship is generally not less than 12mm, the web width is generally more than 300mm, the end part of the web plate generates a small toggle plate through a section of circular arc and a section of straight line, the size of a flat steel reinforcing rib on the web plate is generally 100mm multiplied by 12mm, the web plate distortion is realized by the fire heating of a large toggle plate on a production site, the labor and the time are wasted, the product quality is influenced, constructors also have suggestions, and the design must be improved.

Disclosure of Invention

The invention aims to overcome the defect that a connecting structure between longitudinal frames is easy to twist in the prior art, and provides a connecting structure and a connecting method for the end parts of the longitudinal frames of a ship.

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

a connecting structure of ship longitudinal frame ends is characterized in that a ship comprises a first to-be-connected plate and a second to-be-connected plate, the first to-be-connected plate and the second to-be-connected plate are arranged oppositely, a plurality of first longitudinal frames are arranged on the side wall, facing the second to-be-connected plate, of the first to-be-connected plate, and a plurality of second longitudinal frames are arranged on the side wall, facing the first to-be-connected plate, of the second to-be-connected plate; it is characterized in that the preparation method is characterized in that,

the connecting structure comprises an intermediate part, a first toggle plate and a second toggle plate, wherein the intermediate part is positioned between the first plate to be connected and the second plate to be connected, and the intermediate part is at least partially parallel to the second plate to be connected;

the two ends of the first toggle plate are respectively connected with the middle part and the first longitudinal bone, and the first toggle plate extends along the first longitudinal bone; the second toggle plate is connected at both ends thereof to the intermediate portion and the second longitudinal bone, respectively, and extends along the second longitudinal bone.

In this scheme, the connecting structure is adopted, wherein the middle part is arranged between the first plate to be connected and the second plate to be connected, the first longitudinal bone and the middle part are connected through the first toggle plate, and the second longitudinal bone and the middle part are connected through the second toggle plate; by arranging the middle part, the middle part can be used as a supporting structure of the first toggle plate and the second toggle plate and realizes effective and continuous transmission of force between the first plate to be connected and the second plate to be connected; the first toggle plate extends along the first longitudinal bone, and the second toggle plate extends along the second longitudinal bone, so that the connection between the first plate to be connected and the second plate to be connected can be prevented from being twisted; through the structure, a straight connecting structure can be formed, effective force transmission is realized, and the construction of a production site is facilitated.

Preferably, the first longitudinal rib comprises a first web and a first panel, and the first toggle plate is connected with the first panel and extends along the direction of the plane of the first web until being connected with the middle part;

the second longitudinal frame comprises a second web and a second panel; the second toggle plate is connected to the second panel and extends in the direction of the plane of the second web until it is connected to the intermediate portion.

In this scheme, first longitudinal bone and second longitudinal bone all include respective web and panel, and first bracket and second bracket are connected and extend along the web with the panel of first longitudinal bone and second longitudinal bone respectively to make the direction transmission of power along the web, make whole atress more even, overall structure intensity is high.

Preferably, the first longitudinal beams are arranged according to the line shape of the first plate to be connected, and the included angle between the first longitudinal beams and the first plate to be connected is not less than 75 degrees; the plurality of second longitudinal bones are perpendicular to the plane of the second plate to be connected and are arranged at equal intervals.

In this scheme, first indulge the bone and can arrange according to the first linear of treating the connecting plate, and the second indulges the bone and treats the connecting plate perpendicular and equidistant with the second, can make the load more even.

Preferably, the intermediate portion passes through at least a midpoint between one of the first longitudinal bones and a second longitudinal bone corresponding to the first longitudinal bone.

In the scheme, the middle part penetrates through the middle point between at least one first longitudinal bone and one second longitudinal bone, so that the middle part can be located at the middle parts of the first longitudinal bone and the second longitudinal bone as far as possible, the distances from the respective plates to be connected to the middle part of the first toggle plate and the second toggle plate can be consistent as far as possible, and the two sides are stressed uniformly.

Preferably, two ends of the middle part extend between the first plate to be connected and the second plate to be connected, and are fixedly connected with a hull structure of the ship, so that the plurality of first longitudinal frames and the plurality of second longitudinal frames are connected with the middle part.

In this scheme, adopt above-mentioned structural style, both ends of intermediate part are waited between connecting plate and the second and are waited the connecting plate as far as both ends extend to the upper and lower both ends as far as possible to make as much first longitudinal bone and second longitudinal bone as possible be connected with the intermediate part, also make the intermediate part more firm with the connection of other hull structures, thereby not only effectively support the first bracket of the first longitudinal bone on the first waited connecting plate of bottom limit cabin and the second bracket of the second longitudinal bone on the second waited connecting plate, can transmit on other hull structures the pressure that connecting portion received in addition partly. The structure of the middle portion may take the form of a structure comprising webs and panels, such as a T-shape, L3-shape or L-shape.

Preferably, the first toggle plate is in transition connection with the first plate to be connected through a soft toe, and the first toggle plate is fixedly connected with the middle part; the second toggle plate is in transition connection with the second to-be-connected plate through a soft toe, and the second toggle plate is fixedly connected with the middle part.

Preferably, the first plate to be connected is an outer plate of the ship, the second plate to be connected is an inclined plate, and the inclined plate is arranged in the ship and positioned on one side of the outer plate;

the middle part comprises a first area, a second area and a third area which are sequentially distributed, and the plane where the second area is located is parallel to the plane where the second to-be-connected plate is located; one end of the first area is connected with one end of the second area, and the other end of the first area penetrates through the middles of the outer plate and the inclined plate and is connected with the hull of the ship; one end of the third area is connected with one end of the second area, and the other end of the third area penetrates through the middles of the outer plate and the inclined plate and is connected with the ship body of the ship.

In this aspect, the above-described connection structure may be applied to connection between an outer plate and a swash plate of a vessel, the middle portion may be divided into a plurality of regions according to an arrangement form between the outer plate and the swash plate of the vessel, and the middle portion may include a first region located between both ends of the outer plate and the swash plate, and a second region and a third region located at both sides of the first region, and the first region may extend as far as possible to connect more first toggle plates and toggle plates thereto as possible, thereby forming effective force transmission; the second area and the third area can cover the connecting area of the outer plate and the inclined plate as completely as possible and are connected with the ship body, so that the force transmission is more stable, and part of the stress can be shared to the ship body.

The connecting method of the ship longitudinal frame end part is characterized in that the connecting method is used for manufacturing the connecting structure of the ship longitudinal frame end part; the connection method comprises the following steps:

s1: arranging the middle part between the first to-be-connected plate and the second to-be-connected plate, and enabling the middle part to be at least partially parallel to the second to-be-connected plate;

s2: providing the first toggle between the intermediate portion and the first longitudinal bone, the first toggle extending along the first longitudinal bone;

s3: the second toggle plate is disposed between the intermediate portion and the second longitudinal bone, and the second toggle plate extends along the second longitudinal bone.

In the scheme, the middle part can be used as a support structure of the first toggle plate and the second toggle plate by the method, and the effective continuous transmission of force between the first plate to be connected and the second plate to be connected is realized; the first toggle plate extends along the first longitudinal bone, and the second toggle plate extends along the second longitudinal bone, so that the connection between the first plate to be connected and the second plate to be connected can be prevented from being twisted; through the structure, a straight connecting structure can be formed, effective force transmission is realized, and the construction of a production site is facilitated.

Preferably, the S1 includes: the intermediate portion passes through at least a midpoint between one of the first longitudinal bones and a second longitudinal bone corresponding to the first longitudinal bone.

Preferably, the first plate to be connected is an outer plate of the ship, the second plate to be connected is an inclined plate, and the inclined plate is arranged in the ship and positioned on one side of the outer plate;

the connection method further comprises:

s01: dividing the intermediate portion into a first region, a second region, and a third region according to the contours of the outer plate and the swash plate;

s02: the plane where the second area is located is parallel to the plane where the second to-be-connected plate is located;

s03: one end of the first area is connected with one end of the second area, and the other end of the first area penetrates through the middles of the outer plate and the inclined plate;

s04: one end of the third area is connected with one end of the second area, and the other end of the third area penetrates through the middles of the outer plate and the inclined plate.

The positive progress effects of the invention are as follows:

with the above connection structure, by providing the intermediate portion between the first plate to be connected and the second plate to be connected, and connecting the first longitudinal bone and the intermediate portion by the first toggle plate, and connecting the second longitudinal bone and the intermediate portion by the second toggle plate; by arranging the middle part, the middle part can be used as a supporting structure of the first toggle plate and the second toggle plate and realizes effective and continuous transmission of force between the first plate to be connected and the second plate to be connected; the first toggle plate extends along the first longitudinal bone, and the second toggle plate extends along the second longitudinal bone, so that the connection between the first plate to be connected and the second plate to be connected can be prevented from being twisted; through the structure, a straight connecting structure can be formed, effective force transmission is realized, and the construction of a production site is facilitated.

Drawings

FIG. 1 is a schematic structural view of the outer plate of the bilge and the longitudinal frame of the outer plate on a typical cross section in the prior art;

FIG. 2 is a schematic view of a prior art bottom side tank configuration of a bulk carrier;

FIG. 3 is a schematic view of a bottom side tank configuration of a prior art tanker;

FIG. 4 is a schematic structural view of the connection between the outer plate longitudinal frame and the end of the bottom side cabin sloping plate longitudinal frame in the prior art;

FIG. 5 is a cross-sectional view taken at A-A of FIG. 4, illustrating a twist of the toggle plate;

FIG. 6 is a schematic view of an arrangement of an outer plate longitudinal frame and a swash plate longitudinal frame end bracket plate of a bottom side cabin of a front wall of a cabin, provided by an embodiment of the invention;

FIG. 7 is a schematic cross-sectional view taken at B-B of FIG. 6;

FIG. 8 is a schematic cross-sectional view at C-C of FIG. 6;

fig. 9 is a schematic flow chart illustrating a method for connecting longitudinal ends of a ship according to an embodiment of the present invention;

fig. 10 illustrates a position for arranging the bottom side compartment middle strong structure according to the embodiment of the present invention.

Description of the reference numerals

011 outer plate longitudinal web

012 bilge part outer plate

013 outer plate longitudinal bone and outer plate included angle

021 bottom side cabin inclined plate

022 outer plate

023 bottom edge cabin

024 inner bottom plate

025 double-deck floor stringer

031 bottom side cabin sloping plate

032 bottom edge cabin inclined plate longitudinal frame

033 outer plate

034 outer plate longitudinal frame

035 bottom side chamber

036 front transverse bulkhead of cabin

037 outer plate longitudinal web

038 outer plate longitudinal plate

039 longitudinal rib web plate of bottom side cabin sloping plate

040 bottom edge cabin sloping plate longitudinal frame panel

041 cabin forearm

042 toggle plate

100 first board to be connected, outer board

110 first longitudinal bone

111 first web

112 first panel

200 second to-be-connected board, swash plate

210 second longitudinal bone

211 second web

212 second panel

300 connecting structure

310 middle part

311 first region

312 second area

313 third region

320 first toggle plate

321 toggle plate web

322 toggle plate reinforcing rib

330 second toggle

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

An embodiment of the present invention provides a connection structure 300 of a longitudinal end of a ship, as shown in fig. 6 to 8, the ship includes a first board 100 to be connected and a second board 200 to be connected. In practical implementation, the first board to be connected 100 and the second board to be connected 200 may be two boards to be connected in a ship, in particular, boards to be connected with a linear changing structure. As shown in fig. 6, the first board 100 to be connected and the second board 200 to be connected are disposed opposite to each other, and a plurality of first vertical ribs 110 are disposed on the sidewall of the first board 100 to be connected facing the second board 200, and a plurality of second vertical ribs 210 are disposed on the sidewall of the second board 200 to be connected facing the first board 100.

As shown in fig. 6, the connecting structure 300 includes a middle portion 310, a first toggle plate 320, and a second toggle plate 330, the middle portion 310 is located between the first plate to be connected 100 and the second plate to be connected 200, and the middle portion 310 is at least partially parallel to the second plate to be connected 200; the first toggle plate 320 is connected at both ends thereof to the middle portion 310 and the first longitudinal frame 110, respectively, and the first toggle plate 320 extends along the first longitudinal frame 110; the second toggle plate 330 is connected at both ends thereof to the middle portion 310 and the second longitudinal frame 210, respectively, and the second toggle plate 330 extends along the second longitudinal frame 210. By providing an intermediate part 310 between the first plate to be joined 100 and the second plate to be joined 200, and connecting the first longitudinal bone 110 and the intermediate part 310 by a first toggle 320, and connecting the second longitudinal bone 210 and the intermediate part 310 by a second toggle 330; by providing the intermediate portion 310, the intermediate portion 310 can serve as a support structure for the first toggle plate 320 and the second toggle plate 330, and achieve efficient and continuous transmission of force between the first plate to be connected 100 and the second plate to be connected 200; the first toggle plate 320 extends along the first longitudinal bone 110, and the second toggle plate 330 extends along the second longitudinal bone 210, so that the connection between the first plate to be connected 100 and the second plate to be connected 200 can be prevented from being twisted; through the structure, the straight connecting structure 300 can be formed, the effective transmission of force is realized, and the construction of a production field is facilitated.

In practical implementation, the middle portion 310 may be at least partially parallel to the second board to be connected 200 and may also be at least partially parallel to the first board to be connected 100, and in particular, a relatively flat board to be connected may be selected as a parallel reference of the middle portion 310. The middle part 310 can also be arranged according to the arrangement form of the plates to be connected, so that the distance between the middle part 310 and the two plates to be connected is basically the same, and the integral stress is more balanced and the structural strength is better after the toggle plates are connected.

In a preferred embodiment, as shown in fig. 7 and 8, the first longitudinal frame 110 comprises a first web 111 and a first panel 112, and the first toggle plate 320 is connected to the first panel 112 and extends along the plane of the first web 111 until it is connected to the middle portion 310; the second longitudinal frame 210 includes a second web 211 and a second panel 212; the second toggle 330 is connected to the second panel 212 and extends in the direction of the plane of the second web 211 until it is connected to the intermediate portion 310.

In a specific implementation, the first longitudinal frame 110 and the second longitudinal frame 210 may each include a web and a panel, and the first toggle plate 320 and the second toggle plate 330 are connected to the panels of the first longitudinal frame 110 and the second longitudinal frame 210, respectively, and extend along the web, so that the force can be transmitted along the direction of the web, the overall stress is more uniform, and the overall structural strength is high.

In a preferred embodiment, the first longitudinal frame 110 is arranged according to a line shape of the first board to be connected 100, and an included angle of the first longitudinal frame 110 and an included angle of the first board to be connected 100 is not less than 75 °; the second longitudinal beams 210 are perpendicular to the plane of the second plate 200 to be connected and are arranged at equal intervals.

In specific implementation, as shown in fig. 6, the first board to be connected 100 may be an outer board 100 or other board with a variable linear shape, and the first longitudinal beams 110 may be arranged according to the linear shape of the board to be connected, so that the first longitudinal beams 110 on the board to be connected can be uniformly arranged as much as possible. And the included angle between the first longitudinal frame 110 and the first belt connecting plate is not less than 75 degrees, so that the bearing capacity can be improved. As shown in fig. 6, the second plate to be connected 200 may be a straight inclined plate 200, and the second longitudinal ribs 210 may be arranged on the second plate to be connected 200 at equal intervals and vertically. In other embodiments, the longitudinal ribs can be arranged accordingly to the actual situation of the plate to be connected.

In a preferred embodiment, the middle portion 310 extends through at least a midpoint between a first longitudinal bone 110 and a second longitudinal bone 210 corresponding to the first longitudinal bone 110.

As shown in fig. 6, the O-point of the middle portion 310 passes through the middle of the first longitudinal bone 110 and the corresponding second longitudinal bone 210. In addition, the middle portion 310 is also parallel to the second connecting plate, so that the middle portion 310 can be located at the middle portion 310 of the first longitudinal frame 110 and the second longitudinal frame 210 as much as possible, and the distances between the first toggle plate 320 and the second toggle plate 330 from the respective plates to be connected to the middle portion 310 can be consistent as much as possible, so that the forces on the two sides are uniform.

In a preferred embodiment, the middle portion 310 extends between the first board 100 to be connected and the second board 200 to be connected, and is fixedly connected to the hull structure of the ship, so that the first longitudinal ribs 110 and the second longitudinal ribs 210 are connected to the middle portion 310.

In practical implementation, the two ends of the middle part 310 extend upwards and downwards as much as possible between the first board to be connected 100 and the second board to be connected 200, so that as many first longitudinal beams 110 and second longitudinal beams 210 as possible are connected with the middle part 310, and the connection between the middle part 310 and other ship structures is more firm, thereby not only effectively supporting the first toggle plates 320 of the first longitudinal beams 110 on the first board to be connected 100 and the second toggle plates 330 of the second longitudinal beams 210 on the second board to be connected 200 of the bottom side tank, but also transmitting a part of the pressure applied to the connection part to other ship structures. The structure of the middle part 310 may be in the shape of a structure including a web and a panel, such as a T-shape, an L3-shape or an L-shape, and these types of structures have not only a web but also a panel and have good mechanical properties. As shown in fig. 7, the first toggle 320 may further include a toggle web 321 and a toggle stiffener 322.

In a preferred embodiment, the first toggle plate 320 is connected to the first plate to be connected 100 through a soft-toe transition, and the first toggle plate 320 is fixedly connected to the middle portion 310; the second toggle plate 330 is connected to the second plate 200 by a soft-toe transition, and the second toggle plate 330 is fixedly connected to the middle portion 310.

As shown in fig. 6, the first board to be connected is the outer board 100 of the bottom side tank at the front wall of the engine room, and the second board to be connected is the sloping board 200 of the bottom side tank, which further illustrate the embodiment of the present invention, the sloping board 200 is disposed in the ship and is located at one side of the outer board 100.

As shown in fig. 6, the middle portion 310 includes a first region 311, a second region 312, and a third region 313, which are sequentially distributed, and a plane where the second region 312 is located is parallel to a plane where the second board 200 to be connected is located; one end of the first region 311 is connected to one end of the second region 312, and the other end of the first region 311 passes through the middle of the outer panel 100 and the swash plate 200 and is connected to the hull of the ship; one end of the third region 313 is connected to one end of the second region 312, and the other end of the third region 313 passes through the middle of the outer panel 100 and the swash plate 200 and is connected to the hull of the ship.

In practical implementation, the above-described connection structure 300 may be applied to connection between the outer panel 100 and the swash plate 200 of the vessel, the middle portion 310 may be divided into a plurality of regions according to the arrangement between the outer panel 100 and the swash plate 200 of the vessel, and may include a first region 311 located in the middle between both ends of the outer panel 100 and the swash plate 200, and a second region 312 and a third region 313 located on both sides of the first region 311, and the first region 311 may extend as far as possible to connect as many first toggle plates 320 and toggle plates thereto as possible, thereby forming effective force transmission; the second and third regions 312 and 313 may cover the connection region between the outer plate 100 and the swash plate 200 as completely as possible, and may be connected to the hull, so that the force transmission may be more stable, and a part of the force may be shared to the hull.

The web and the panel of the end elbow plate of the longitudinal frame of the outer plate 100 and the end elbow plate of the longitudinal frame of the bottom side cabin sloping plate 200 at the front wall of the cabin are not twisted any more, and the straight structure is not only beneficial to force transmission, but also more beneficial to construction at a production site. The middle part 310 parallel to the bottom side cabin sloping plate 200 is arranged at a proper position on the front wall of the cabin in the range of the bottom side cabin, namely a strong structure; the outer plate 100 longitudinal end elbow plate and the sloping plate 200 longitudinal end elbow plate in the bottom side cabin extend to the middle part 310, and the effective connection of the outer plate 100 longitudinal end elbow plate and the sloping plate 200 longitudinal end elbow plate is realized through the connection with the middle part 310. The middle part 310 is firmly connected to the hull structure at both ends thereof, and not only serves to effectively support the brackets at the end of the longitudinal frame of the bilge tank plate 100 and the brackets at the end of the longitudinal frame of the swash plate 200, but also serves to transmit a part of the water pressure applied to the brackets to other hull structures.

The embodiment of the invention also provides a connecting method of the ship longitudinal end part, which is used for manufacturing the connecting structure 300 of the ship longitudinal end part; as shown in fig. 9, the connection method may include the steps of:

s1: arranging an intermediate portion 310 between the first plate to be connected 100 and the second plate to be connected 200, and making the intermediate portion 310 at least partially parallel to the second plate to be connected 200;

s2: a first toggle 320 is disposed between the middle portion 310 and the first longitudinal bone 110, and the first toggle 320 extends along the first longitudinal bone 110;

s3: a second toggle 330 is disposed between the middle portion 310 and the second longitudinal bone 210, and the second toggle 330 extends along the second longitudinal bone 210.

By the above method, the intermediate portion 310 can be enabled to serve as a support structure for the first toggle plate 320 and the second toggle plate 330, and effective continuous transmission of force between the first plate to be connected 100 and the second plate to be connected 200 is achieved; the first toggle plate 320 extends along the first longitudinal bone 110, and the second toggle plate 330 extends along the second longitudinal bone 210, so that the connection between the first plate to be connected 100 and the second plate to be connected 200 can be prevented from being twisted; through the structure, the straight connecting structure 300 can be formed, the effective transmission of force is realized, and the construction of a production field is facilitated.

As a preferred embodiment, S1 includes: the middle portion 310 extends through at least a midpoint between one of the first longitudinal beams 110 and a second longitudinal beam 210 corresponding to the first longitudinal beam 110.

In a preferred embodiment, the first board 100 to be connected is an outer plate 100 of a ship, the second board 200 to be connected is an inclined plate 200, and the inclined plate 200 is disposed in the ship and located on one side of the outer plate 100;

the connection method further comprises:

s01: the middle portion 310 is divided into a first region 311, a second region 312, and a third region 313 according to the contours of the outer plate 100 and the swash plate 200. The number and the positions of the area divisions may be set according to the specific contours of the outer panel 100 and the swash plate 200. Other plates to be connected can be divided according to actual conditions, so that the first longitudinal frame 110 and the second longitudinal frame 210 can be connected with the middle part 310.

S02: the plane of the second region 312 is parallel to the plane of the second board 200.

S03: one end of the first region 311 is connected to one end of the second region 312, and the other end of the first region 311 passes through the middle of the outer panel 100 and the swash plate 200.

S04: one end of the third region 313 is connected to one end of the second region 312, and the other end of the third region 313 passes through the middle of the outer panel 100 and the swash plate 200.

In order to effectively connect the longitudinal frame end elbow plate of the outer plate 100 of the bottom side cabin at the front wall of the cabin and the longitudinal frame end elbow plate of the inclined plate 200 of the bottom side cabin, and avoid the twisting of the two, an intermediate part 310 parallel to the inclined plate 200 of the bottom side cabin is arranged on the front wall of the cabin within the range of the bottom side cabin at a proper position away from the outer plate 100 and the inclined plate 200, the intermediate part 310 extends towards the top and the bottom of the bottom side cabin as much as possible and is firmly connected with other hull structures, then the end elbow plate is designed for the longitudinal frame of the outer plate 100 along the web surface of the longitudinal frame of the outer plate 100 and the end elbow plate is designed for the longitudinal frame of the inclined plate 200 along the web surface of the longitudinal frame of the inclined plate 200, and the other ends of the elbow plates extend towards the intermediate part 310 and are firmly connected with the intermediate part 310. The elbow plate at the end part of the longitudinal bone is L3 type, one end connected with the longitudinal bone is provided with a soft toe with the height not less than 15mm, one end connected with the middle part 310 is 25-50 mm less than the middle part 310, the soft toe is not arranged, direct connection is adopted, and the free edge of the elbow plate is transited to the soft toe at the end part of the longitudinal bone by a straight line and an arc.

The following further illustrates an embodiment of the present invention by taking a 20-ten-thousand-ton bulk carrier as an example.

S001: and looking at the general layout and the cabin layout to know the basic separation of the cabin and various cabins, such as decks, platforms, inner bottoms, longitudinal bulkheads and the like.

S002: and (4) checking a general layout chart and a cargo hold structure chart (tail) to know the structure of the ship body cross section in the tail cargo hold area, such as the division condition of a top side hold, a bottom side hold, a cargo hold and a double-layer bottom hold.

S003: and drawing section lines of the cross section contour line of the front wall of the cabin, the boundary line of the cabin, the platform deck line inside the cabin, the inner bottom plate, the longitudinal girder and the like, wherein the structure inside the cabin on the front wall of the cabin can be treated as visible, and the structure inside the tail cargo cabin, the top side cabin, the isolation empty cabin and the bottom side cabin can be treated as invisible.

S004: the outer plate longitudinal bones arranged in the rib type line graph are shifted to the outer plate, the longitudinal bones on the top side cabin sloping plate and the longitudinal bones on the bottom side cabin sloping plate are respectively shifted to corresponding positions from the tail cargo cabin structure diagram, and the deck longitudinal bones arranged in the deck plane diagram are expressed on the deck.

S005: and analyzing the arrangement directions of the longitudinal bones on the inclined plate and the longitudinal bones on the outer plate of the bottom side cabin, and checking the torsion condition of the longitudinal bones of the outer plate of the bottom side cabin in the tail cargo cabin area in the rib type line diagram (namely the change condition of the included angle between the web plate of the longitudinal bones of the outer plate and the outer plate along the length of the ship). The specific analysis of the ship tail cargo hold area bottom side cabin outer plate is that the outer plate in the bottom side cabin of the ship tail cargo hold area is bidirectional curvature, in order to ensure that the distance between a longitudinal frame track line (the intersection line of a longitudinal frame web plate and the outer plate) between two adjacent ribs is equal or basically equal, and the included angle between the longitudinal frame and the outer plate is not less than 75 degrees, the height of the longitudinal frame arranged on the outer plate from a base line (B.L line) is changed along the ship length direction, the intersection angle between the longitudinal frame web plate and the outer plate is also continuously changed (namely the longitudinal frame is twisted along the ship length), and the longitudinal frames on the bottom side cabin inclined plate are arranged at equal intervals and perpendicular to the inclined plate plane, so that the intersection line of the web plate and the panel of the outer plate longitudinal frame and the intersection line of the web plate and the panel of the inclined plate longitudinal frame are spatially non-coplanar straight lines. According to the solid geometry theory, two spatial non-coplanar straight lines cannot form a plane.

S006: a middle strong structure is arranged to be used as a support for a separately arranged elbow plate at the end part of the longitudinal frame of the outer plate of the bottom side cabin and an elbow plate at the end part of the longitudinal frame of the inclined plate. As shown in FIG. 10, the midpoint O of the bottom-side tank stringer H18-S7-2 is used as a parallel line of the bottom-side tank sloping plate, intersects with the bottom-side tank stringer H6-S3 at point A, crosses point A and is used as a parallel line of the bottom-side tank sloping plate lower part, intersects with the inner bottom plate at point B, extends downwards by 50mm to point C, and takes a proper point, such as midpoint D, on the double-layer bottom-side stringer B23 to connect with the CD. The web plate surface of the inclined plate longitudinal bone H29 passing through the bottom side cabin is taken as a perpendicular line of an AO extension line and is intersected with the point E, and the OE is extended upwards by 50mm to the point F. The intersection point of the web plate of the outer plate longitudinal bone S7-15 and the panel and the intersection point of the web plate of the bottom side cabin sloping plate longitudinal bone H30 and the panel are connected, the middle point G of the intersection point is selected, and FG is connected. Thus, G-F-E-O-A-B-C-D is the intermediate portion to be provided, i.e., the intermediate strong structure.

S007: used as the end elbow plates of the outer plate longitudinal frame and the sloping plate longitudinal frame. On the basis of fig. 10, the end elbow plate of the longitudinal bone of the outer plate is made and connected with the middle strong structure, namely, the web plate surface of the longitudinal bone of the outer plate is extended to the middle strong structure. As an end bracket of the swash plate longitudinal frame, the web surface of the swash plate longitudinal frame is extended to the middle strong structure in a smooth manner as shown in fig. 6 with reference to the end bracket of the outer plate longitudinal frame.

S008: the size of the strong structures required is calculated from the specification. The middle strong structure of the ship adopts a T-shaped structure, and the middle strong structure can be calculated according to the height of a web plate, the thickness of the web plate, the width of a panel and the thickness of the panel, and the unit of the middle strong structure is millimeter.

S009: and designing an end bracket plate of the outer plate longitudinal frame and an end bracket plate of the inclined plate longitudinal frame. The elbow plates at the end parts of the outer plate longitudinal ribs and the inclined plate longitudinal ribs of the ship are of L3 type structures, and one ends, connected with the longitudinal ribs, of the elbow plates are enlarged according to the standard requirements so as to meet the requirement of elbow plate arm length (length of two edges) specified by the standard.

S010: designing a common elbow plate of the outer plate longitudinal bone and the inclined plate longitudinal bone which are arranged at the topmost position in the bottom side cabin. This toggle plate will serve as a support for the end of the intermediate strong structure and needs to be designed larger to meet the requirements for the connection of the ends of the intermediate strong structure. Because the web of the toggle plate is twisted, a hem position is provided on the web.

S011: the design of the end part of the strong structure is perfected, backward components of the front wall of the cabin in the bottom side cabin, such as a platform deck and a bottom plate in the cabin, are hidden, and only the forward components of the front wall of the cabin are expressed, so that the structural design work in the whole bottom side cabin is completed.

While specific embodiments of the invention have been described above, it will be appreciated 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.