Processing method of LNG ship side anti-collision structure and anti-collision structure

Abstract

The application relates to a processing method of a LNG ship side anti-collision structure and the anti-collision structure, which comprises the following steps: respectively splicing T-shaped sections and trapezoidal channel steels on a T-shaped section processing platform and a trapezoidal channel steel processing platform; the T-shaped section processing platform comprises a bottom plate, vertical columns fixed on the two sides of the bottom plate, clamping parts oppositely arranged on the vertical columns, and a clamping space for clamping a web plate formed between the oppositely arranged clamping parts; the panel is placed on the bottom plate, the web plate is vertically placed in the clamping space, the web plate is vertically placed on the panel, and the web plate and the panel are welded and fixed; the T-shaped section is hoisted on a channel steel bottom plate by turning over 180 DEG together with the T-shaped section processing platform, the vertical column is supported on the channel steel bottom plate, and the web plate and the channel steel bottom plate are welded and fixed. Through the processing method, the precision of the T-shaped section and the trapezoidal channel steel in the anti-collision structure can be guaranteed, the web plate can be perpendicular to the channel steel bottom plate during welding, and the quality and efficiency of the operation are improved.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding, specifically to a processing method and a collision protection structure for the hull side of an LNG ship. Background Technology

[0002] Some inland LNG carriers have requirements for preventing collisions with bulkheads on their sides, thus requiring a unique side structure composed of trapezoidal channel steel and T-shaped profiles. The web of the T-shaped profiles must be fixed perpendicular to the trapezoidal channel steel. Existing technology, such as the invention patent application CN113928482A, discloses a membrane-type cargo hold structure for inland waterways. This structure features multiple human-shaped longitudinal ribs on the inner side of the outer plating. These ribs are welded together from U-shaped steel and T-shaped profiles, with the ends of the T-shaped profiles welded to the bottom of the U-shaped steel. The human-shaped longitudinal ribs possess extremely high strength, effectively reinforcing the outer plating to prevent impacts and preventing tearing of the outer plating from affecting the inner side. The U-shaped structure also reduces the adverse effects on the structure when the outer plating is damaged by the U-shaped steel, which can serve as a temporary outer plating structure to further prevent the continuation of damage.

[0003] On the hull side, the anti-collision structure needs to be installed in batches, and there are many of them. The traditional method is to make the T-shaped profiles, hoist them onto flatbed trucks and move them to a professional platform, and then assemble and fix them with trapezoidal channel steel. During the assembly process, since the web of the T-shaped profile is connected to the trapezoidal channel steel, it is easy for the web of the T-shaped profile to tilt relative to each other, which affects the construction quality and efficiency. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a processing method and a collision protection structure for the hull side of an LNG ship. By reinforcing the collision protection structure using this method, the quality and efficiency of the processing can be improved.

[0005] The technical objective of this invention is achieved through the following technical solution:

[0006] A method for fabricating a side impact protection structure for an LNG carrier, the side impact protection structure comprising T-shaped profiles and trapezoidal channel steel, wherein the T-shaped profile includes a panel and a web, with one side of the web vertically fixed to the center of the panel; the method includes fabricating the T-shaped profile and the trapezoidal channel steel by splicing them on a T-shaped profile processing platform and a trapezoidal channel steel processing platform respectively; the T-shaped profile processing platform includes a base plate and columns vertically fixed to both sides of the base plate, several columns being symmetrically arranged on both sides of the base plate, and clamping parts being installed on the columns, forming a clamping space between the opposing clamping parts for clamping the web. Place the panel on the base plate, and vertically insert the web plate into the clamping space so that the web plate is placed vertically on the panel. Then weld the web plate to the panel and fix it. The trapezoidal channel steel includes a channel steel base plate and side plates that are inclined relative to the channel steel base plate on both sides of the channel steel base plate. The side plates form trapezoidal grooves on the channel steel base plate. On the trapezoidal channel steel processing platform, the trapezoidal grooves of the trapezoidal channel steel face downwards, and the channel steel base plate is set horizontally. Turn the T-profile along with the T-profile processing platform 180° and hoist it onto the channel steel base plate. The column is supported on the channel steel base plate, and the web plate is welded to the channel steel base plate and fixed.

[0007] Furthermore, the column includes a fixed section and a movable section. The fixed section is vertically fixed to the base plate, and the clamping part is set on the side of the fixed section. One end of the movable section is coaxially inserted into the fixed section, and the length of the movable section inserted into the fixed section is adjustable.

[0008] Furthermore, a clamping device for holding the panel is provided above the base plate, and the clamping devices are distributed on both sides of the clamping space.

[0009] Furthermore, the clamping part includes a crossbeam and a clamping end, the crossbeam being arranged perpendicular to the column, and the clamping end being located at the end of the crossbeam; the clamping device is movably mounted on the crossbeam.

[0010] Furthermore, the distance between the relatively positioned clamping parts is adjustable.

[0011] Furthermore, before processing the T-profile, the installation line of the web is marked on the panel, and then the position of the panel is adjusted on the base plate so that the web is aligned with the installation line on the panel; the web is welded and fixed to the panel by holding the panel with a clamping device.

[0012] Furthermore, there are lifting lugs on both sides of the base plate.

[0013] Furthermore, the trapezoidal channel steel processing platform includes support columns, horizontal supports, and diagonal braces. The horizontal supports are set horizontally, with the support columns supporting the lower middle part of the horizontal supports. The diagonal braces support the lower ends of the horizontal supports. Several horizontal supports are set in parallel. The channel steel base plate is laid on the horizontal supports, and the side plates are laid along the diagonal braces. The side plates are welded and fixed to the channel steel base plate.

[0014] The present invention also provides an LNG ship side collision protection structure, including a T-shaped profile and a trapezoidal channel steel. The T-shaped profile includes a panel and a web, with one side of the web vertically fixed to the middle of the panel. The trapezoidal channel steel includes a channel steel base plate and side plates that are inclined relative to the channel steel base plate on both sides. The other side of the web is vertically fixed to the channel steel base plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are that by processing the LNG ship side collision protection structure using the processing method of the present invention, on the one hand, the processing accuracy of the T-shaped profiles and trapezoidal channel steel in the collision protection structure can be guaranteed, and on the other hand, the web plate can be ensured to be perpendicular to the bottom plate of the channel steel when welding the T-shaped profiles and trapezoidal channel steel, thereby improving the quality and efficiency of the operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the LNG ship side collision protection structure in this invention.

[0017] Figure 2 This is a schematic diagram of the trapezoidal channel steel processing platform structure in this invention.

[0018] Figure 3 This is a partial structural diagram of a T-profile processing platform according to an embodiment of the present invention.

[0019] Figure 4 This is a partial structural diagram of another T-profile processing platform in an embodiment of the present invention.

[0020] Figure 5 This is a top view of the T-profile processing platform in this invention.

[0021] Figure 6 This is a schematic diagram of the clamping end structure in an embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the T-shaped profile being flipped and mounted on the trapezoidal channel steel in this invention.

[0023] In the diagram, 1. Panel; 2. Web; 3. Channel steel base plate; 4. Side plate; 5. Support column; 6. Horizontal support; 7. Diagonal brace; 8. Base plate; 9. Fixed section; 10. Movable section; 11. Hexagonal nut end; 12. Lifting lug; 13. Crossbeam; 14. Clamping end; 15. Adjusting rod; 16. Clamping block; 17. Rack; 18. Mounting hole; 19. Gear; 20. Adjusting screw. Detailed Implementation

[0024] The technical solution of the present invention will be further described below with reference to specific embodiments:

[0025] A method for fabricating a side collision protection structure for an LNG carrier. The method involves fabricating the side collision protection structure, which includes a T-shaped profile and trapezoidal channel steel. The T-shaped profile includes a panel 1 and a web 2. One side of the web 2 is vertically fixed to the middle of the panel 1. Figure 1 As shown, T-shaped profiles and trapezoidal channel steels are fabricated by assembling them separately on the T-shaped profile processing platform and the trapezoidal channel steel processing platform, and then the T-shaped profiles and trapezoidal channel steels are welded and fixed together.

[0026] Specifically, such as Figures 3-5 As shown, the T-profile processing platform includes a base plate 8 and columns vertically fixed to both sides of the base plate. Several columns are symmetrically arranged on both sides of the base plate 8. Opposite clamping parts are installed on the columns, forming a clamping space for web clamping. Each column includes a fixed section 9 and a movable section 10. The fixed section 9 is vertically fixed to the base plate 8, and the clamping parts are located on the side of the fixed section 9. One end of the movable section 10 is coaxially inserted into the fixed section 9. The length of the movable section 10 inserted into the fixed section 9 is adjustable. For example, the fixed section 9 has internal threads, and the end of the movable section 10 inserted into the fixed section 9 also has external threads. The movable section 10 and the fixed section 9 are threadedly engaged. Rotating the movable section 10 relative to the fixed section 9 adjusts the length of the movable section 10 inserted into the fixed section 9. To facilitate adjustment of the movable section, a hexagonal nut end 11 is also installed at the end of the movable section. Lifting lugs 12 are also installed on both sides of the base plate to facilitate the flipping and hoisting of the T-profile.

[0027] To facilitate the fixing of the panel 1 and the web 2 during welding, a clamping device for holding the panel is provided above the base plate 8. The clamping devices are distributed on both sides of the clamping space. The clamping part includes a crossbeam 13 and a clamping end 14. The crossbeam 13 is vertically fixed to the side of the fixing section 9, and the clamping device is installed on the crossbeam 13.

[0028] This embodiment provides a structure for a clamping device, such as... Figure 3 As shown, the device includes an adjusting rod 15, a clamping block 16 at the end of the adjusting rod 15, a rack 17 on the side of the adjusting rod 15, and a mounting hole 18 on the crossbeam 13. The adjusting rod 15 passes through the mounting hole 18, and a gear 19 is installed in the mounting hole 18 corresponding to the rack 17. The gear meshes with the rack, and rotating the gear 19 causes the adjusting rod 15 to move up and down relative to the mounting hole 18. The clamping block 16 clamps the panel 1 above the base plate 8.

[0029] This embodiment also provides a structure for a clamping device, such as Figure 4As shown, it includes a screw 20, a rotating handle 21, and a clamping block 16. A threaded hole 22 is opened on the crossbeam 13, through which the screw 20 passes. The clamping block 16 and the rotating handle 21 are respectively installed at both ends of the screw 20. The rotating handle 21 causes the screw 20 to move relative to the threaded hole 22, and the clamping block 16 clamps the panel 1 above the base plate 8.

[0030] Preferably, the distance between the clamping parts is adjustable, thus accommodating the clamping of webs of different thicknesses. Specifically, for example... Figure 6 As shown, an adjusting screw 20 can be installed between the clamping end 14 and the crossbeam 13. The clamping end 14 and the crossbeam 13 are connected by the adjusting screw 20. The adjusting screw 20 is inserted into the crossbeam 13. Rotating the clamping end 14 changes the length of the adjusting screw 20 inserted into the crossbeam 13, thereby adjusting the distance between the clamping parts.

[0031] Specifically, the trapezoidal channel steel processing platform includes support columns 5, horizontal supports 6, and diagonal braces 7, such as... Figure 2 As shown, the horizontal support 6 is set horizontally, the support column 5 is supported at the lower middle part of the horizontal support 6, and the diagonal brace 7 is supported at both ends of the horizontal support 6. An angle is formed between the diagonal brace 7 and the horizontal support 6, which is equal to the angle between the side plate 4 and the channel steel bottom plate 3. Several horizontal supports 6 are set in parallel.

[0032] When assembling the trapezoidal channel steel, the bottom plate 3 of the channel steel is laid on the horizontal support 6, and the side plate 4 is laid along the diagonal support 7. The side plate 4 is then welded and fixed to the bottom plate 3 of the channel steel.

[0033] When assembling the T-profile, mark the installation line of the web 2 on the panel 1, place the panel 1 on the base plate 8, and vertically place the web 2 into the clamping space. Then, adjust the position of the panel 1 on the base plate 8 so that the web 2 is aligned with the installation line on the panel 1. The web 2 is welded to the panel 1 by holding the panel with the clamping device.

[0034] The T-profile, along with the T-profile processing platform, is flipped 180° and hoisted onto the channel steel base plate 3. The uprights are supported on the channel steel base plate 3. Figure 7 As shown, the length of the column can also be adjusted so that the web plate 2 is close to the channel steel base plate 3. The support of the column makes the web plate 2 perpendicular to the channel steel base plate 3. The web plate 2 and the channel steel base plate 3 are welded and fixed. After welding, the T-shaped material processing platform is removed from the side.

[0035] This embodiment is merely a further explanation of the present invention and is not intended to limit the present invention. Those skilled in the art can make non-inventive modifications to this embodiment as needed after reading this specification, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A method for processing a side impact protection structure for an LNG carrier, the side impact protection structure comprising a T-shaped profile and a trapezoidal channel steel, the T-shaped profile comprising a face plate and a web plate, one side of the web plate being vertically fixed to the middle of the face plate; characterized in that, The method includes fabricating T-shaped profiles and trapezoidal channel steel by assembling them on a T-shaped profile processing platform and a trapezoidal channel steel processing platform, respectively. The T-shaped profile processing platform includes a base plate and columns vertically fixed to both sides of the base plate. Several columns are symmetrically arranged on both sides of the base plate, and each column is equipped with opposing clamping parts, forming a clamping space between the opposing clamping parts for clamping the web plate. The panel is placed on the base plate, and the web plate is vertically placed into the clamping space, so that the web plate is vertically placed on the panel, and then the web plate is welded and fixed to the panel. The trapezoidal channel steel includes a channel steel base plate and side plates inclined relative to the channel steel base plate on both sides of the channel steel base plate, with the side plates forming trapezoidal grooves on the channel steel base plate. On the trapezoidal channel steel processing platform, the trapezoidal grooves of the trapezoidal channel steel face downwards, and the channel steel base plate is horizontally positioned. The T-shaped profile, along with the T-shaped profile processing platform, is flipped 180° and hoisted onto the channel steel base plate, with the columns supporting the channel steel base plate, and the web plate is welded and fixed to the channel steel base plate. Above the base plate, there is also a clamping device for holding the panel. The clamping device is distributed on both sides of the clamping space. The clamping part includes a crossbeam and a clamping end. The crossbeam is set perpendicular to the column, and the clamping end is set at the end of the crossbeam. The clamping device is movably mounted on the crossbeam. The clamping device includes an adjusting rod, and a clamping block is provided at the end of the adjusting rod. A rack is provided on the side of the adjusting rod. An installation hole is opened on the crossbeam. The adjusting rod passes through the installation hole. A gear is installed in the installation hole corresponding to the rack. The gear meshes with the rack. Rotating the gear causes the adjusting rod to move up and down relative to the installation hole, and the panel above the base plate is clamped by the clamping block.

2. The processing method of the LNG ship side collision protection structure according to claim 1, characterized in that, The column includes a fixed section and a movable section. The fixed section is vertically fixed to the base plate. The clamping part is provided on the side of the fixed section. One end of the movable section is coaxially inserted into the fixed section. The length of the movable section inserted into the fixed section is adjustable.

3. The processing method of the LNG ship side collision protection structure according to claim 1, characterized in that, The distance between the relatively positioned clamping parts is adjustable.

4. The processing method of the LNG ship side collision protection structure according to claim 3, characterized in that, Before processing the T-profile, the mounting line of the web is drawn on the panel, and then the position of the panel is adjusted on the base plate so that the web is aligned with the mounting line on the panel; the web is welded and fixed to the panel by holding the panel with a clamping device.

5. The processing method of the LNG ship side collision protection structure according to claim 1, characterized in that, The base plate also has lifting lugs on both sides.

6. The processing method of the LNG ship side collision protection structure according to claim 1, characterized in that, The trapezoidal channel steel processing platform includes support columns, horizontal supports, and diagonal braces. The horizontal supports are set horizontally, the support columns are supported at the lower middle part of the horizontal supports, the diagonal braces are supported at both ends of the horizontal supports, and several horizontal supports are set in parallel. The channel steel base plate is laid on the horizontal supports, and the side plates are laid along the diagonal braces. The side plates are welded and fixed to the channel steel base plate.

7. A side collision avoidance structure for an LNG ship, characterized in that, It is processed according to the method described in any one of claims 1-6.

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