CN211032961U

CN211032961U - Sheet segmentation turnover tool

Info

Publication number: CN211032961U
Application number: CN201920763285.2U
Authority: CN
Inventors: 王鹏
Original assignee: China Merchants Heavy Industry Jiangsu Co Ltd
Current assignee: China Merchants Heavy Industry Jiangsu Co Ltd
Priority date: 2019-05-25
Filing date: 2019-05-25
Publication date: 2020-07-17
Anticipated expiration: 2029-05-25

Abstract

The utility model discloses a frock is stood up in sheet metal segmentation comprises girder, strutbeam and support, girder, strutbeam are the box structure, connect through the through hole between girder and the strutbeam to keep at mutually perpendicular's state. The support is arranged on the field and used for supporting the main beam and the support beam. The thin plates are arranged on the girder top plate of the girder in sections and are respectively connected and fixed with the girder and the plurality of groups of lifting lugs at the edge of the supporting girder through the end parts of the thin plates. Therefore, the utility model discloses can pass through girder and corbel support the sheet metal segmentation provides the support when it stands up the operation to satisfy the demand that the operation was stood up in the mail steamer sheet metal segmentation, guarantee to build the product and stand up the operation in-process deflection control at the within range of requirement, effectively reduce reinforcing material welding quantity simultaneously.

Description

Sheet segmentation turnover tool

Technical Field

The utility model relates to a shipbuilding equipment field specifically says so and relates to a frock is stood up in sheet metal segmentation.

Background

The cruise ship is known as a bright pearl on a crown in the ship industry of China, and is a ship product with high added value and high technology. The mail steamer is a maritime high-end tourism project integrating beauty and comfort, and is known as a maritime mobile city. The passenger carrying requirement of the cruise ship is met by building more weight than other types of ships. Meanwhile, in order to meet the weight requirement index of the cruise ship and the requirement of the cruise ship on the aesthetic property, the construction of the cruise ship has higher requirements on light weight and plate thickness. In the process of building the subsections on the cruise ship, high-strength steel plates with the thickness of 5mm-6mm are generally adopted as structural plates, and the specific weight of the plates accounts for 90 percent of that of the building plates. In the process of building the upper building subsection, the subsection adopts a single-layer reverse building mode, the rib position spacing is large in the building process, and the strong structure spacing usually exceeds 3 meters. In this case, the deformation of the thin plate segment during the turning process is increased, which affects the segment precision. Even, the thin plate has large segment size and low structural strength, so that the segment is deformed and discarded.

In the process of turning over the thin plates of the mail steamer in sections at home and abroad, transverse and longitudinal reinforcements, even frames, are usually made in advance in the thin plates, and then the turning-over operation is carried out. Such conventional practice not only wastes material, but also greatly increases construction cycle time and labor costs. In the turning-over operation, too much strengthening welding also causes the welding deformation of the thin plate sections.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main objective is exactly to building the product such as individual layer sheet metal segmentation, individual layer light segmentation in the mail steamer, provides a sheet metal segmentation and stands up frock to bear the sheet metal segmentation safely and stand up the operation, reduce the deformation that stands up the segmentation of in-process, reduce reinforcing material welding quantity.

In order to achieve the above object, the utility model provides a frock is stood up in sheet metal segmentation, it includes: main beam, corbel and at least three support. The main beam comprises a main beam top plate and a main beam bottom plate, and is arranged into a U-shaped structure which is equal in size and is aligned up and down; an inner vertical plate, an outer vertical plate and a main beam end plate are also connected between the main beam top plate and the main beam bottom plate and are perpendicular to the main beam top plate and the main beam bottom plate; the outer vertical plates are connected to the edges of the main beam top plate and the main beam bottom plate, the main beam end plate is connected with the end parts of the main beam top plate and the main beam bottom plate, and the main beam top plate and the main beam bottom plate are surrounded into a U-shaped closed box body structure; the turning part of the U-shaped closed box body structure is also provided with a through hole vertical to the main beam top plate and the main beam bottom plate, and the periphery of the through hole is closed; in the U-shaped closed box structure, a main beam end plate facing the opening end of the U-shaped closed box structure and the outer surfaces of the outer vertical plates are welded with a turning main lifting lug and a turning auxiliary lifting lug. The support beam comprises a support beam top plate and a support beam bottom plate, and the support beam top plate and the support beam bottom plate are arranged into a square structure with the same size and are aligned left and right; a web plate and a supporting beam end plate are connected between the supporting beam top plate and the supporting beam bottom plate and are perpendicular to the supporting beam top plate and the supporting beam bottom plate; the web plate is connected with the edges of the top plate and the bottom plate of the support beam, the end plate of the support beam is connected with the end parts of the top plate and the bottom plate of the support beam, and the top plate and the bottom plate of the support beam are surrounded into a closed box body structure with a square structure; the branch beam is perpendicular to the main beam and penetrates through the through hole of the main beam; the outer surface of a web plate of the supporting beam is respectively provided with a stop at the upper side and the lower side of the through hole, and the stops are abutted against a main beam top plate and a main beam bottom plate at the upper side and the lower side of the through hole to keep the supporting beam and the main beam vertically fixed; and the supporting beam lifting lugs are respectively arranged on the outer surfaces of the supporting beam end plates on the upper part and the lower part of the main beam. The thin plate segment to be turned over is arranged on the main beam top plate of the main beam, and the end parts of the thin plate segment to be turned over are respectively connected and fixed with the main turning-over lifting lugs, the auxiliary turning-over lifting lugs and the supporting beam lifting lugs, so that the main beam and the supporting beam can support the thin plate segment when the thin plate segment is turned over, and the thin plate segment is prevented from being deformed. The support is arranged below the main beam and used for supporting the main beam, the support beam connected with the main beam and the thin plate sections arranged on the support beam.

Optionally, in the above tool for turning over the sheet in sections, the main beam includes two through holes, and the two through holes are oppositely arranged at two turning positions of the U-shaped closed box structure.

Optionally, in the sheet segmented turning tool, a partition plate is welded around the through hole in a deep fusion welding manner to seal the through hole; and the welded part is polished to be smooth.

Optionally, in the above-mentioned sheet segment turning tool, the inside of the main beam is further provided with: the long longitudinal rib plate, the short longitudinal rib plate, the transverse rib plate of the girder and the reinforced flat steel are used for supporting the girder top plate, the inner vertical plate, the outer vertical plate, the girder bottom plate and the inner wall of the girder end plate.

Optionally, in the above tool for turning over the sheet in sections, the opening end of the main beam is arranged in the width direction of the U-shaped closed box structure; the two sides of the opening end are provided with the main beam top plate and the long arm of the main beam bottom plate; the short arms of the main beam top plate and the main beam bottom plate are arranged on the opposite sides of the opening end; the long longitudinal rib plate is arranged in the length direction of the U-shaped closed box structure and is connected with the middle position of the long arm of the main beam top plate and the main beam bottom plate; lightening holes are formed in the long longitudinal rib plates at intervals; the short longitudinal rib plates are arranged in parallel to the length direction of the U-shaped closed box structure and are connected with the middle positions of the short arms of the main beam top plate and the main beam bottom plate; the short longitudinal rib plate is provided with a lightening hole; the transverse rib plate of the main beam is arranged to be parallel to the width direction of the U-shaped closed box structure, and a long arm connecting the top plate of the main beam and the bottom plate of the main beam is close to one end of the opening; the transverse rib plate of the main beam is provided with a lightening hole; the reinforcing flat steel is arranged between the two through holes and connected with the middle positions of the short arms of the main beam top plate and the main beam bottom plate.

Optionally, in the sheet segment turning tool, the main beam top plate and the main beam bottom plate are flat; the long longitudinal rib plate, the short longitudinal rib plate and the girder transverse rib plate are connected with the girder top plate and the girder bottom plate in an angle welding mode, and the long longitudinal rib plate, the short longitudinal rib plate and the girder transverse rib plate are connected with the inner vertical plate and the outer vertical plate in a double-groove deep fusion welding mode.

Optionally, in the above tool for turning over a sheet segment, the support includes: the cross beams comprise at least two cross beams which are connected in a cross shape; the frame comprises 4 frames, the end parts of the frames are mutually connected into a square shape, and the middle positions of the frames are respectively connected with the end parts of the cross beams; the supporting legs comprise 4 supporting legs, and the upper ends of the 4 supporting legs are respectively connected with the end parts of the frame; the lower ends of the 4 supporting legs are respectively connected with a backing plate.

Optionally, in the tool for turning over the sheet in sections, the support is of a frame structure, the support legs, the frame and the beams are all formed by splicing sectional materials, and the support legs, the frame and the beams are connected in a butt welding mode and a fillet welding mode.

Optionally, in the sheet segmented turning tool, a middle longitudinal rib plate, a support beam transverse rib plate and a connecting truss are further arranged inside the support beam to support the inner walls of the support beam top plate, the support beam bottom plate, the web plate and the support beam end plate.

Optionally, in the sheet segment turning tool, the middle longitudinal rib plate is arranged in the length direction of the supporting beam top plate and the supporting beam bottom plate and is connected with the middle position of the supporting beam top plate and the supporting beam bottom plate; the horizontal rib plate of the supporting beam is arranged in the width direction of the supporting beam top plate and the supporting beam bottom plate and is connected with the supporting beam top plate and the supporting beam bottom plate; the top plate and the bottom plate of the support beam are connected with the middle longitudinal rib plate or the transverse rib plate of the support beam in an angle welding mode, and the middle longitudinal rib plate or the transverse rib plate of the support beam is connected with the web plate and the end plate in a deep fusion welding mode; the connecting truss is formed by H-shaped steel and a reinforcing toggle plate for reinforcing the H-shaped steel, and is connected in a fillet welding mode.

Advantageous effects

The supporting beam is connected with the main beam through a through hole and is kept in a mutually vertical state. The support is arranged on the field and used for supporting the main beam and the support beam. The thin plates are arranged on the girder top plate of the girder in sections and are respectively connected and fixed with the girder and the plurality of groups of lifting lugs at the edge of the supporting girder through the end parts of the thin plates. Therefore, the utility model discloses can pass through girder and corbel support the sheet metal segmentation provides the support when it stands up the operation to satisfy the demand that the operation was stood up in the mail steamer sheet metal segmentation, guarantee to build the product and stand up the operation in-process deflection control at the within range of requirement, effectively reduce reinforcing material welding quantity simultaneously.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, together with the embodiments of the invention for the purpose of explanation and not limitation of the invention. In the drawings:

fig. 1 is a schematic structural view of a main beam in the sectional turning-over tool for thin plates of the utility model;

FIG. 2 is a schematic view of a section A-A of the main beam structure of FIG. 1;

FIG. 3 is a schematic view of a section B-B of the main beam structure of FIG. 1;

FIG. 4 is a schematic view of a section C-C of the main beam structure of FIG. 1;

FIG. 5 is a schematic view of a section D-D of the main beam structure of FIG. 1

FIG. 6 is a schematic view of a section F-F of the main beam structure of FIG. 1;

FIG. 7 is a schematic view of a section E-E of the main beam structure of FIG. 1;

fig. 8 is a schematic structural view of a supporting beam in the sectional turning-over tool for thin plates of the present invention;

FIG. 9 is a side view of the corbel structure of FIG. 8 in the plane K;

FIG. 10 is a schematic illustration of a cross-section of the corbel structure L-L of FIG. 8;

FIG. 11 is a schematic view of a cross-section M-M of the corbel structure of FIG. 8;

FIG. 12 is a schematic view of a cross-section N-N of the corbel structure of FIG. 8;

fig. 13 is a schematic structural view of a support in the sectional turning tool for thin plates of the present invention;

FIG. 14 is a side view of the standoff structure of FIG. 13;

fig. 15 is a schematic view of the process of turning over the sheet in sections by the turning-over tool of the present invention;

fig. 16 is a schematic view of the connection relationship between the structures of the sectional turning tool for thin plates in the use state.

In the drawings, 1 denotes a main beam top plate; 2 represents an inner vertical plate; 3 denotes a long longitudinal rib; 4 represents a short longitudinal rib; 5 denotes a main beam transverse rib plate; 6 denotes a girder end plate; 7 denotes a reinforcing flat steel; 8 represents a turning-over main lifting lug; 9 represents a turning auxiliary lifting lug; 10 denotes a main beam; 11 denotes a web; 12 represents a middle longitudinal rib plate; 13 denotes a corbel top plate; 14 denotes a corbel end plate; 15 denotes a corbel transverse rib; 16 denotes a reinforcing H-section steel; 17 denotes a corbel lug; 18 denotes a stopper; 20 denotes a corbel; 21 denotes a leg; 22 denotes a frame; 23 denotes a cross beam; 24 denotes a pad; and 30 denotes a support.

Detailed Description

In order to further the understanding of the present invention, the following detailed description of the present invention will be given with reference to the accompanying drawings and the embodiments, which are only used for explaining the present invention and cannot be considered as limiting the present invention to the embodiments. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

The utility model provides a frock is stood up in sheet metal segmentation for support sheet metal segmentation and carry out the operation of overturning. It mainly comprises: a main beam 10, a corbel 20 and three pedestals 30 supporting it.

Referring to fig. 1 to 7, the structure of the main beam is shown. It sets up to the closed box structure of U type, and its main part includes: the main beam top plate 1 and the main beam bottom plate are arranged into U-shaped structures which are equal in size and are aligned up and down; an inner vertical plate 2, an outer vertical plate and a main beam end plate 6 are also connected between the main beam top plate 1 and the main beam bottom plate and are perpendicular to the main beam top plate 1 and the main beam bottom plate; the outer vertical plates and the inner vertical plates are respectively connected to the edges of the main beam top plate 1 and the main beam bottom plate, the main beam end plate 6 is connected with the end parts of the main beam top plate 1 and the main beam bottom plate, and the main beam top plate 1 and the main beam bottom plate are surrounded into a U-shaped closed box body structure; and two through holes perpendicular to the main beam top plate 1 and the main beam bottom plate are respectively formed in 2 turning parts of the U-shaped closed box body structure. The periphery of the through hole is sealed; a partition plate is welded around the through hole in a deep fusion welding mode to seal the through hole; and the welded part is polished to be smooth. The opening end of the main beam 10 is arranged in the width direction of the U-shaped closed box structure; the two sides of the opening end are provided with the main beam top plate 1 and the long arm of the main beam bottom plate; the opposite side of the opening end is provided with the main beam top plate 1 and the short arm of the main beam bottom plate. In the U-shaped closed box structure, a main beam end plate 6 facing the opening end of the U-shaped closed box structure and the outer surfaces of the outer vertical plates are welded with a turning main lifting lug 8 and a turning auxiliary lifting lug 9.

The corbel 20 shown in fig. 8 includes a corbel top plate 13 and a corbel bottom plate, which are arranged in a square structure with the same size and arranged in a left-right manner; a web plate 11 and a supporting beam end plate 14 are connected between the supporting beam top plate 13 and the supporting beam bottom plate and are perpendicular to the supporting beam top plate 13 and the supporting beam bottom plate; the web plate 11 is connected with the edges of the top plate 13 and the bottom plate of the support beam, the end plate 14 of the support beam is connected with the ends of the top plate 13 and the bottom plate of the support beam, and the top plate 13 and the bottom plate of the support beam are surrounded into a closed box body structure with a square structure; referring to the middle of fig. 16, the outriggers 20 are perpendicular to the main beam 10 and pass through the through holes of the main beam 10; stoppers 18 are respectively arranged on the upper side and the lower side of the through hole on the outer surface of the web plate 11 of the support beam 20, and the stoppers 18 are abutted with the main beam top plate 1 and the main beam bottom plate on the upper side and the lower side of the through hole to keep the support beam 20 and the main beam 10 vertically fixed; and a supporting beam lifting lug 17 is welded on the outer surface of the supporting beam end plate 14 arranged on the upper side and the lower side of the main beam 10 in the supporting beam 20.

Therefore, the structure can arrange the thin plate segment to be turned over on the main beam top plate 1 of the main beam 10, the end part of the thin plate segment to be turned over is respectively connected and fixed with the turning-over main lifting lugs 8, the turning-over auxiliary lifting lugs 9 and the supporting beam lifting lugs 17, and the thin plate segment can be supported by the main beam 10 and the supporting beam 20 in the turning-over process of the thin plate segment through turning over in a mode of fig. 15, so that the thin plate segment is prevented from being deformed.

In a more specific implementation manner, referring to fig. 2, the main beam 10 is further provided with: and the inner vertical plate 2 is arranged in the length direction of the U-shaped closed box structure and is connected with the main beam top plate 1 and the long arm of the main beam bottom plate.

As shown in fig. 3, the main beam 10 is further provided with: the long longitudinal rib plate 3 is arranged in the length direction of the U-shaped closed box structure and is connected with the middle position of the long arm of the main beam top plate 1 and the main beam bottom plate; the long longitudinal ribs 3 are provided with lightening holes at intervals.

As shown in fig. 4, the main beam 10 is further provided with: short longitudinal ribs 4. The middle position of a short arm which is parallel to the length direction of the U-shaped closed box body structure and is connected with the main beam top plate 1 and the main beam bottom plate is arranged; the short longitudinal ribs 4 are provided with lightening holes.

As shown in fig. 5, the main beam 10 is further provided with: and a main beam transverse rib plate 5. The transverse rib plate 5 of the main beam is arranged in parallel to the width direction of the U-shaped closed box structure, and a long arm connecting the top plate 1 of the main beam and the bottom plate of the main beam is close to one end of the opening; the transverse rib plate 5 of the main beam is provided with lightening holes.

Referring to fig. 6, a turning main lifting lug 8 is welded on an end plate 6 at the end of the main beam 10.

Referring to fig. 7, a reinforcing flat steel 7 is further arranged between two through holes of the main beam 10. Which connects the girder top plate 1 and the middle position of the short arm of the girder bottom plate.

In the structure, the main beam top plate 1 and the main beam bottom plate are flat; the long longitudinal rib plate 3, the short longitudinal rib plate 4 and the main beam transverse rib plate 5 are connected with the main beam top plate 1 and the main beam bottom plate in an angle welding mode, and the long longitudinal rib plate 3, the short longitudinal rib plate 4 and the main beam transverse rib plate 5 are connected with the inner vertical plate 2 and the outer vertical plate in a double-groove deep fusion welding mode. Therefore, the short longitudinal rib plates 4, the girder transverse rib plates 5 and the reinforcing flat steel 7 are enough to support the inner walls of the girder top plate 1, the inner vertical plate 2, the outer vertical plate, the girder bottom plate and the girder end plate 6. The thin plate segments can be pinned on the surfaces of the main beams through the lifting lugs, and the main beams provide stable support to avoid deformation in the overturning process.

In a specific implementation manner, in the above structure, the inner part of the corbel 20 is further provided with a middle longitudinal rib plate 12, a corbel transverse rib plate 15 and a connecting truss for supporting the corbel top plate 13, the corbel bottom plate, the web plate 11 and the inner wall of the corbel end plate. Referring to fig. 9, the stopper 18 is a trapezoid structure, and the trapezoid wide side abuts against the top plate 1 and the bottom plate of the main beam above and below the through hole to fix the support beam 20.

Referring to fig. 10, in the above-mentioned support beam 20, the middle longitudinal rib 12 is disposed in the length direction of the support beam top plate 13 and the support beam bottom plate, perpendicular to the main beam, and connects the middle position of the support beam top plate 13 and the support beam bottom plate, and the upper and lower ends of the support beam are also connected with support beam lifting lugs 17, so that the upper and lower ends of the thin plate segment are pinned with the support beam lifting lugs through another lifting lug structure, thereby fixing the thin plate segment in the upper and lower directions and avoiding deformation of the thin plate segment. Referring to fig. 11, the horizontal rib 15 of the support beam is disposed in the width direction of the top plate 13 and the bottom plate of the support beam, and connects the top plate 13 and the bottom plate of the support beam. The end plates 14 shown in fig. 12 are rectangular structures that enclose the ends of the frame structure in the corbel.

In the structure, the longitudinal rib plate 12 and the transverse rib plate 15 are arranged in the supporting beam 20 and are perpendicular to each other, the supporting beam lifting lugs 17 and the stopping lugs 18 on two sides are arranged on the upper portion and the lower portion of the supporting beam respectively, the supporting beam top plate 13/the supporting beam bottom plate are flat and are connected with the rib plates in the supporting beam through the fillet welding mode, the web plates 11 and the end plates 14 are connected through the deep fusion welding mode, and the reinforcing H-shaped steel 16 is used as a truss structure. The main body of the elbow joint consists of H-shaped steel and a reinforced elbow plate which are connected in a fillet welding mode.

Referring to fig. 13 and 14, a support is provided under the main beam 10 for supporting the main beam 10, the attached support beams 20, and the thin plate segments provided thereon. The support is of a frame structure, and the main body of the support is composed of supporting legs 21 and a frame 22 which are all formed by splicing sectional materials. A cross beam 23 is additionally arranged in the plane of the frame 22. The bottom of the supporting leg 21 is placed on the ground through a backing plate 24, and the supports are all connected in a butt welding mode and a fillet welding mode. The cross beams 23 comprise at least two cross beams, and the cross beams 23 are connected in a cross shape; the frames 22 comprise 4 frames, the end parts of the frames 22 are connected into a square shape, and the middle positions of the frames 22 are respectively connected with the end parts of the cross beams 23; the number of the legs 21 is 4, and the upper ends of the 4 legs 21 are respectively connected with the end parts of the frame 22; the lower ends of the 4 support legs 21 are respectively connected with a backing plate 24. The supporting legs 21, the frames 22 and the cross beams 23 are all formed by splicing sectional materials.

Referring to fig. 15, a diagram of an embodiment of an actual use of the sheet turning tool is responsible for a sheet turning operation. This sheet metal segmentation through its marginal connecting piece with the utility model discloses girder edge, a plurality of lugs at strutbeam edge are connected fixedly to stand up the support that in-process obtained girder and strutbeam, avoid sheet metal segmentation surface atress and warp. The process accessible loop wheel machine that stands up realizes, the same foretell lug of accessible of loop wheel machine be connected to the sheet metal segmentation and the utility model discloses a frock to control the upset of sheet metal segmentation.

For the above-mentioned operation flow, each item needs detailed design and parameter calibration; the manufacturing details need to be embodied in the manufacturing process, and the turning-over operation can be ensured.

The foregoing is a more detailed description of the invention, taken in conjunction with the specific preferred embodiments. The utility model discloses the preparation process is simple, and the material is ordinary steel, and the structure is simpler steel construction, and processing and welding process are conventional technology, and the required precision is not high to processing.

Claims

1. The utility model provides a frock is stood up in sheet metal segmentation which characterized in that: the method comprises the following steps: the main beam (10), the support beams (20) and at least three supports (30);

the main beam (10) comprises a main beam top plate (1) and a main beam bottom plate, and the main beam top plate and the main beam bottom plate are arranged into U-shaped structures which are equal in size and aligned up and down; an inner vertical plate (2), an outer vertical plate and a main beam end plate (6) are connected between the main beam top plate (1) and the main beam bottom plate and are perpendicular to the main beam top plate (1) and the main beam bottom plate; the outer vertical plates are connected to the edges of the main beam top plate (1) and the main beam bottom plate, the main beam end plate (6) is connected to the ends of the main beam top plate (1) and the main beam bottom plate, and the main beam top plate (1) and the main beam bottom plate are surrounded into a U-shaped closed box body structure; the turning part of the U-shaped closed box body structure is also provided with a through hole vertical to the main beam top plate (1) and the main beam bottom plate, and the periphery of the through hole is closed; in the U-shaped closed box body structure, a main beam end plate (6) facing the opening end of the U-shaped closed box body structure and the outer surfaces of the outer vertical plates are welded with a turning main lifting lug (8) and a turning auxiliary lifting lug (9); the supporting beam (20) comprises a supporting beam top plate (13) and a supporting beam bottom plate, and the supporting beam top plate and the supporting beam bottom plate are arranged into a square structure with the same size and are aligned left and right; a web plate (11) and a supporting beam end plate (14) are connected between the supporting beam top plate (13) and the supporting beam bottom plate and are perpendicular to the supporting beam top plate (13) and the supporting beam bottom plate; the web (11) is connected with the edges of the top plate (13) and the bottom plate of the support beam, the end plate (14) of the support beam is connected with the ends of the top plate (13) and the bottom plate of the support beam, and the top plate (13) and the bottom plate of the support beam are surrounded into a closed box body structure with a square structure; the branch beam (20) is perpendicular to the main beam (10) and passes through a through hole of the main beam (10); stoppers (18) are respectively arranged on the upper side and the lower side of the through hole on the outer surface of the web plate (11) of the support beam (20), and the stoppers (18) are abutted against the main beam top plate (1) and the main beam bottom plate on the upper side and the lower side of the through hole to keep the support beam (20) and the main beam (10) vertically fixed; the outer surfaces of the supporting beam end plates (14) arranged on the upper and lower sides of the main beam (10) on the supporting beam (20) are respectively welded with supporting beam lifting lugs (17);

the thin plate segment to be turned over is arranged on a main beam top plate (1) of the main beam (10), and the end parts of the thin plate segment to be turned over are respectively connected and fixed with the main turning-over lifting lugs (8), the auxiliary turning-over lifting lugs (9) and the supporting beam lifting lugs (17), so that the main beam (10) and the supporting beam (20) can support the thin plate segment when the thin plate segment is turned over, and the thin plate segment is prevented from deforming;

the support (30) is arranged below the main beam (10) and is used for supporting the main beam (10), the support beam (20) connected with the main beam and the thin plate section arranged on the support beam.

2. The tool for turning over the thin plate in sections according to claim 1, wherein the number of the through holes of the main beam (10) is two, and the two through holes are oppositely arranged at two turning positions of the U-shaped closed box structure.

3. The sheet turning tool for the sectional area of the thin plate as claimed in claim 2, wherein a partition plate is welded around the through hole in a deep fusion welding manner to seal the through hole; and the welded part is polished to be smooth.

4. The sheet segment turning tool according to claim 1, wherein the main beam (10) is further provided with: the long longitudinal rib plate (3), the short longitudinal rib plate (4), the transverse rib plate (5) of the girder and the reinforced flat steel (7) are used for supporting the inner walls of the girder top plate (1), the inner vertical plate (2), the outer vertical plate, the girder bottom plate and the girder end plate (6).

5. The sheet segment turning tool according to claim 4, wherein the opening end of the main beam (10) is arranged in the width direction of the U-shaped closed box structure; the two sides of the opening end are provided with a main beam top plate (1) and a long arm of a main beam bottom plate; the opposite side of the opening end is provided with the main beam top plate (1) and the short arm of the main beam bottom plate;

the long longitudinal rib plate (3) is arranged in the length direction of the U-shaped closed box structure and is connected with the middle position of the long arm of the main beam top plate (1) and the main beam bottom plate;

lightening holes are formed in the long longitudinal rib plates (3) at intervals;

the short longitudinal rib plate (4) is arranged in parallel to the length direction of the U-shaped closed box structure and is connected with the middle position of the short arm of the main beam top plate (1) and the main beam bottom plate; the short longitudinal rib plate (4) is provided with lightening holes;

the transverse rib plate (5) of the main beam is arranged to be parallel to the width direction of the U-shaped closed box structure, and a long arm connecting the top plate (1) of the main beam and the bottom plate of the main beam is close to one end of the opening; the transverse rib plate (5) of the main beam is provided with lightening holes;

the reinforcing flat steel (7) is arranged between the two through holes and connected with the middle positions of the short arms of the main beam top plate (1) and the main beam bottom plate.

6. The sheet segment turning tool according to claim 5, wherein the main beam top plate (1) is flat with the main beam bottom plate; the long longitudinal rib plate (3), the short longitudinal rib plate (4), the girder transverse rib plate (5) and the girder top plate (1) are connected with the girder bottom plate in an angle welding mode, and the long longitudinal rib plate (3), the short longitudinal rib plate (4), the girder transverse rib plate (5) are connected with the inner vertical plate (2) and the outer vertical plate in a double-groove deep fusion welding mode.

7. The sheet segment turning tool according to claim 1, wherein the support (30) comprises:

the cross beams (23) comprise at least two cross beams, and the cross beams (23) are connected into a cross shape; the frames (22) comprise 4 frames, the end parts of the frames (22) are connected into a square shape, and the middle positions of the frames (22) are respectively connected with the end parts of the cross beams (23); the number of the legs (21) is 4, and the upper ends of the 4 legs (21) are respectively connected with the end parts of the frame (22); the lower ends of the 4 supporting legs (21) are respectively connected with a backing plate (24).

8. The sheet turning tool in sections as claimed in claim 7, wherein the support (30) is of a frame structure, the legs (21), the frame (22) and the beams (23) are all formed by splicing sectional materials, and the legs (21), the frame (22) and the beams (23) are connected by butt welding and fillet welding.

9. The tool for turning over the thin plate in sections as claimed in claim 1, wherein a middle longitudinal rib plate (12), a supporting beam transverse rib plate (15) and a connecting truss are further arranged inside the supporting beam (20) to support a supporting beam top plate (13), a supporting beam bottom plate, a web plate (11) and the inner wall of a supporting beam end plate.

10. The sheet segment turning tool according to claim 9, wherein the middle longitudinal rib plate (12) is arranged in the length direction of the supporting beam top plate (13) and the supporting beam bottom plate and is connected with the middle position of the supporting beam top plate (13) and the supporting beam bottom plate; the horizontal rib plate (15) of the supporting beam is arranged in the width direction of the supporting beam top plate (13) and the supporting beam bottom plate and is connected with the supporting beam top plate (13) and the supporting beam bottom plate; the top plate (13) and the bottom plate of the supporting beam are connected with the middle longitudinal rib plate (12) or the transverse rib plate (15) of the supporting beam in an angle welding mode, and the middle longitudinal rib plate (12) or the transverse rib plate (15) of the supporting beam are connected with the web plate and the end plate in a deep fusion welding mode;

the connecting truss is reinforced H-shaped steel (16), and the main body of the connecting truss is composed of the H-shaped steel and a reinforced toggle plate and is connected in a fillet welding mode.