Quick replacement structure of ship bottom plate and construction method thereof

Abstract

The application relates to the technical field of ship engineering, and discloses a ship bottom plate quick replacement structure, which comprises a ship bottom plate, four inverted electric hoists, a first support frame and a second support frame. The ship bottom plate comprises K rows of plates, a ship side plate and a straight plate. A plurality of rib plate bulk structures and the ship side plate constitute a first construction area, the K rows of plates constitute a second construction area, and the straight plate constitutes a third construction area. The ship side plate and the related rib plate bulk structure are divided into the first construction area, the K rows of plates are taken as the second construction area, the straight plate end close to the K rows of plates is taken as the third construction area, the ship bottom plate is divided into three construction areas, the complex area at the ship side plate is subjected to bulk prior construction, a buffer is provided for workshop production preparation, timely feeding and starting are ensured, the ship bottom plate can be simultaneously constructed on a ship site and in a production workshop, the construction efficiency is improved, and the ship is ensured to be docked early.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship engineering, in particular to a quick replacement structure of ship bottom plate and a construction method thereof. BACKGROUND

[0002] Due to the particularity of the water environment, as the use time of the ship increases, or the paint coating is damaged, or the structure is deformed, corrosion is easily caused. According to the relevant standards, if the ship bottom plate has regional significant corrosion, non-point corrosion, and the corrosion rate reaches 25% or more, it must be replaced. The traditional replacement of the ship bottom plate must be docked for repair.

[0003] For example, the "Akaris" ship is a chemical tanker. The original docking repair project of our company for the right ship bottom plate replacement of cabin 2 is about 10 tons. However, after the ballast water is emptied and the thickness is measured, it is found that the entire cabin structure in the right ballast cabin 2 is severely corroded, the ship is 11 meters to the right, the length is about 28 meters, the height of the ship bottom plate is 1 meter, and all structures need to be replaced. The cabin has dense structure compared to other cabin structures, the transverse frame is dense, and the longitudinal web spacing has thickened rib plates.

[0004] If the traditional bulk replacement of the ship bottom plate is used, due to the existence of curved lines in the replacement area of the entire bottom of the cabin, the ship repair factory cannot obtain drawings and data, which brings difficulties to the cutting of the entire process. In addition, it is difficult for the newly added repair materials to be in place, which causes certain difficulties for production organization. The production department cannot supply materials in time. In summary, when replacing the cabin ship bottom plate, the actual size of the ship parts needs to be measured on site to cut and manufacture parts to supply materials and start work. This process requires a lot of time. The traditional bulk replacement of the ship bottom plate cannot guarantee the dock period. Therefore, a quick replacement structure of ship bottom plate and a construction method thereof are provided. SUMMARY

[0005] In view of the deficiencies in the prior art, the present application provides a quick replacement structure of ship bottom plate and a construction method thereof to solve the problems mentioned in the background.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a quick replacement structure of ship bottom plate, comprising a ship bottom plate, four inverted electric hoists, a first support frame and a second support frame, the ship bottom plate comprises K rows of plates, a ship side plate and a flat plate, the surface of the ship side plate is provided with a plurality of rib bulk structures, the plurality of rib bulk structures and the ship side plate constitute a first construction area, the K rows of plates constitute a second construction area, and the flat plate constitutes a third construction area.

[0007] As a further explanation of the present invention, both the second construction area and the third construction area are divided into multiple panels. The outer surface of the multiple panels in the second construction area is provided with a number of first lifting lugs, and the outer surface of the multiple panels in the third construction area is provided with a number of second lifting lugs.

[0008] As a further explanation of the present invention, the four inverted hoists are used to lift multiple panels. When lifting the panels in the second construction area, the lifting end of the inverted hoist is connected to the first lifting lug. When lifting the panels in the third construction area, the lifting end of the inverted hoist is connected to the second lifting lug.

[0009] As a further explanation of the present invention, after the multiple segments of the second construction area are hoisted into place, the first support frame is installed below the corresponding segments, and after the multiple segments of the third construction area are hoisted into place, the second support frame is installed below the corresponding segments.

[0010] As a further explanation of the present invention, the plurality of first lifting lugs and the plurality of second lifting lugs each include a turning lifting lug, a barge lifting lug, and a hoisting lifting lug.

[0011] A construction method for quickly replacing the bottom plate of a ship is also provided, including the following steps:

[0012] S1: On-site measurement and material cutting. Process personnel measure the dimensions of the components in the first construction area by area, and simultaneously dismantle the old ship hull outer plate and stiffening plate bulk structure in the first construction area. Subsequently, process personnel measure the dimensions of the components in the second and third construction areas and complete the section drawing of the second and third construction areas.

[0013] S2: When dismantling the old ship hull plating and stiffening plate bulk structure in the first construction area, the production workshop will cut and process the materials according to the size of the ship hull plating and stiffening plate bulk structure.

[0014] S3: Replace the bulk structure of the ship's outer plating and stiffening plates in the first construction area. While the first construction area is under construction, the second and third construction areas are manufactured in sections in the production workshop to produce the corresponding segmented panels.

[0015] S4: Install the segmented panels of the second and third construction areas in batches according to the segmentation diagram. When installing the second construction area, connect the four inverted electric hoists to the corresponding first lifting lugs, hoist them to the designated position, and then install the first support frame under the corresponding panel. When installing the third construction area, connect the four inverted electric hoists to the corresponding second lifting lugs, hoist them to the designated position, and then install the second support frame under the corresponding panel.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The present invention provides a rapid replacement structure for ship bottom plates and its construction method. By dividing the ship's outer plating and its related stiffening plate bulk structure into a first construction area, the K-shaped plate area into a second construction area, and the straight plate end near the K-shaped plate into a third construction area, the ship's bottom plate is divided into three construction areas. This allows for bulk pre-construction of complex areas on the ship's outer plating, providing a buffer for workshop production preparation, ensuring timely material supply and commencement of work, and enabling simultaneous construction on the ship's site and in the production workshop, thereby improving construction efficiency and ensuring the ship's early docking. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the ship bottom plate structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the first construction area of ​​the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the second construction area of ​​the present invention;

[0021] Figure 4 This is a schematic diagram of the third construction area structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure during installation in the second construction area of ​​the present invention;

[0023] Figure 6 This is a schematic diagram of the structure during installation in the third construction area of ​​the present invention;

[0024] Figure 7 This is a schematic diagram of the inverted electric hoist structure of the present invention.

[0025] In the diagram: 1. Ship bottom plate; 2. Inverted electric hoist; 3. First lifting ring; 4. Second lifting ring; 5. First support frame; 6. Second support frame; 101. K-shaped plate; 102. Outer hull plate; 103. Flat plate; 104. Rib plate bulk structure; 105. First construction area; 106. Second construction area; 107. Third construction area. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1:

[0028] Please refer to the following: Figures 1-7 This invention provides a technical solution: a rapid replacement structure for a ship's bottom plate, comprising a ship's bottom plate 1, four inverted electric hoists 2, a first support frame 5, and a second support frame 6. The ship's bottom plate 1 includes a K-shaped plank 101, a ship's outer plate 102, and a straight plate 103. The surface of the ship's outer plate 102 is provided with several loose stiffening structures 104. These loose stiffening structures 104 and the ship's outer plate 102 constitute a first construction area 105, the K-shaped plank 101 constitutes a second construction area 106, and the straight plate 103 constitutes a third construction area 107. Specifically… By dividing the ship's outer plating 102 and its related bulk stiffener structure 104 into a first construction area 105, the area of ​​the K-shaped plate 101 into a second construction area 106, and the end of the straight plate 103 near the K-shaped plate 101 into a third construction area 107, the ship's bottom plate 1 is divided into three construction areas. This allows for pre-construction of the complex area of ​​the outer plating 102 in bulk, providing a buffer for workshop production preparation, ensuring timely material supply and commencement of work, and enabling simultaneous construction at the ship site and in the production workshop, thereby improving construction efficiency and ensuring the ship's early docking.

[0029] In this embodiment, both the second construction area 106 and the third construction area 107 are divided into multiple panels. The outer surface of each panel in the second construction area 106 is provided with several first lifting lugs 3, and the outer surface of each panel in the third construction area 107 is provided with several second lifting lugs 4. Four inverted hoists are used to lift the multiple panels. When lifting the panels in the second construction area 106, the lifting end of the inverted hoists is connected to the first lifting lugs 3. When lifting the panels in the third construction area 107, the lifting end of the inverted hoists is connected to the second lifting lugs 4. Specifically, the second construction area 106 and the third construction area 107 are divided into sections, each consisting of six panels, with a weight controlled within 10 tons. The second construction area 106 is then replaced according to the section batch drawing. Four inverted electric hoists 2 are used to lift the panels of the section structure of the second construction area 106 using the first lifting ring. After the replacement of the second construction area 106 is completed, the third construction area 107 is replaced according to the section batch drawing. Again, four inverted electric hoists 2 are used to lift the panels of the section structure of the third construction area 107 using the second lifting ring.

[0030] In this embodiment, after the multiple segments of the second construction area 106 are hoisted into place, the first support frame 5 is installed below the corresponding segments. After the multiple segments of the third construction area 107 are hoisted into place, the second support frame 6 is installed below the corresponding segments. Specifically, after the segmented structural panels of the second construction area 106 are hoisted into place, the first support frame 5 is installed below them to support them and ensure construction safety. After the segmented structural panels of the third construction area 107 are hoisted into place, the second support frame 6 is installed below them to support them and ensure construction safety.

[0031] In this embodiment, the plurality of first lifting lugs 3 and the plurality of second lifting lugs 4 each include a turning lifting lug, a barge transport lifting lug, and a hoisting lifting lug. Specifically, in actual needs, appropriate lifting lugs are selected according to weight. In principle, there should be no less than four horizontal barge transport lifting lugs, no less than two lifting lugs for smaller panels, no less than two turning lifting lugs, and the load capacity of a single lifting lug should be no less than half of the panel's tonnage.

[0032] In the specific implementation process, the ship requiring replacement of the bottom plate 1 is brought into the dry dock, and the bow and stern of the ship are constructed simultaneously in batches. On-site, multiple process engineers measure the dimensions of the first construction area 105 in batches. At the same time, the old batch of ship hull outer plates 102 and stiffening plate mechanisms are disassembled. Based on the measured dimensions, the ship hull outer plates 102 and the bulk structures are simultaneously cut and processed, so that the shaped parts of the second construction area 106 and the third construction area 107 are measured and cut immediately afterward. Sectioning of construction areas 106 and 107 was carried out, and the sectioning diagram was completed. During construction, construction of the first construction area 105 was carried out first. At this time, the outer hull plating 102 and multiple stiffening plate bulk structures 104 were disassembled separately. The first construction area 105 was replaced with the original stock materials. While the first construction area 105 was being constructed, the K-shaped plate 101 area of ​​the ship bottom plate 1, i.e., the second construction area 106, and the adjacent flat plate 103, i.e., the second construction area 106, were sectioned in the production workshop. After the first construction area 105 is replaced, the second construction area 106 is replaced according to the sectional batch drawing. At this time, four inverted electric hoists 2 are used to lift the sectional structure of the second construction area 106 through the first lifting ring. After the sectional structure is lifted into place, the first support frame 5 is installed below it to support it and ensure construction safety. After the second construction area 106 is replaced, the third construction area 107 is replaced according to the sectional batch drawing. At this time, four inverted electric hoists 2 are used to lift the sectional structure of the third construction area 107 through the second lifting ring. After the sectional structure is lifted into place, the second support frame 6 is installed below it to support it and ensure construction safety. In this way, the ship bottom plate 1 is divided into three construction areas, and the complex area at the outer plating 102 of the ship's hull is pre-constructed in bulk, which provides a buffer for workshop production preparation, ensures timely material supply and start-up, and allows for simultaneous construction on the ship site and in the production workshop, improving construction efficiency and ensuring the ship is docked as soon as possible.

[0033] This embodiment also relates to a construction method for the aforementioned quick replacement structure of the ship bottom plate, including the following steps:

[0034] S1: On-site measurement and material cutting. Process personnel measure the dimensions of the components in the first construction area 105 by area, and simultaneously remove the old ship hull outer plate 102 and stiffener plate bulk structure 104 in the first construction area 105. Subsequently, process personnel measure the dimensions of the components in the second construction area 106 and the third construction area 107, and complete the section drawing of the second construction area 106 and the third construction area 107.

[0035] S2: When the old ship hull plating 102 and stiffening plate bulk structure 104 in the first construction area 105 are being dismantled, the production workshop will cut and process the materials according to the dimensions of the ship hull plating 102 and stiffening plate bulk structure 104.

[0036] S3: Replace the outer hull plating 102 and the bulk stiffener structure 104 of the first construction area 105. While the first construction area 105 is under construction, the second construction area 106 and the third construction area 107 are manufactured in sections in the production workshop to produce the corresponding section panels.

[0037] S4: Install the segmented panels of the second construction area 106 and the third construction area 107 in batches according to the segmentation diagram. When installing the second construction area 106, connect the four inverted electric hoists 2 to the corresponding first lifting lugs 3, hoist them to the designated position, and then install the first support frame 5 under the corresponding panel. When installing the third construction area 107, connect the four inverted electric hoists 2 to the corresponding second lifting lugs 4, hoist them to the designated position, and then install the second support frame 6 under the corresponding panel.

[0038] In this embodiment, when the bottom plate of the ship is replaced using the construction method described above, the project, which involves nearly 100 tons of steel, can be completed in 1.5 days for measurement, 4 days for all material cutting, 3 days for section fabrication, 13 days for compressed air acceptance, and 15 days for undocking, thus ensuring the ship's undocking deadline.

[0039] Working Principle: In use, this invention involves bringing the vessel requiring replacement of its bottom plating 1 into the dry dock and simultaneously performing batch-by-bow and stern construction. Multiple process engineers measure the dimensions of the first construction area 105 in batches. Simultaneously, the old batch of outer hull plating 102 and stiffening mechanisms are disassembled. Based on the measured dimensions, the outer hull plating 102 and the loose structures are simultaneously cut and processed. This allows the forming parts in the second construction area 106 and the third construction area 107 to be measured and cut subsequently. Construction area 106 and the third construction area 107 are divided into sections, and section diagrams are drawn. During construction, the first construction area 105 is constructed first. At this time, the outer hull plating 102 and multiple stiffening plate bulk structures 104 are disassembled separately. The first construction area 105 is replaced with the original stock materials. While the first construction area 105 is being constructed, the K-shaped plate 101 area of ​​the ship's bottom plate 1, i.e., the second construction area 106, and the adjacent flat plate 103, i.e., the second construction area 106, are being constructed in the production workshop. The process involves segmented fabrication into panels. After the first construction area 105 is replaced, the second construction area 106 is replaced according to the segmented batch drawing. Four inverted electric hoists 2 are used to lift the segmented structure of the second construction area 106 using the first lifting ring. After the segmented structure is in place, the first support frame 5 is installed below it for support, ensuring construction safety. After the second construction area 106 is replaced, the third construction area 107 is replaced according to the segmented batch drawing. Four inverted electric hoists 2 are used to lift the panels of the segmented structure of the third construction area 107 using the second lifting ring. After the panel of the segmented structure is in place, the second support frame 6 is installed below it for support, ensuring construction safety. This divides the ship's bottom plate 1 into three construction areas, allowing for pre-construction of the complex area at the outer hull plate 102, providing a buffer for workshop production preparation, ensuring timely material supply and commencement of work, and enabling simultaneous construction on-site and in the production workshop, improving construction efficiency and ensuring the ship's early docking.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-replacement structure for ship bottom plates, comprising a ship bottom plate (1), four inverted electric hoists (2), a first support frame (5), and a second support frame (6), characterized in that: The ship bottom plate (1) includes a K-shaped plate (101), a ship hull outer plate (102), and a flat plate (103). The surface of the ship hull outer plate (102) is provided with a number of rib plate bulk structures (104). The number of rib plate bulk structures (104) and the ship hull outer plate (102) constitute a first construction area (105). The K-shaped plate (101) constitutes a second construction area (106), and the flat plate (103) constitutes a third construction area (107). The second construction area (106) and the third construction area (107) are both divided into multiple sections and are provided with multiple panels. The outer surface of the multiple sections of the panels in the second construction area (106) is provided with a number of first lifting lugs (3), and the outer surface of the multiple sections of the panels in the third construction area (107) is provided with a number of second lifting lugs (4).

2. The quick replacement structure for a ship bottom plate according to claim 1, characterized in that: The four inverted electric hoists are used to lift multiple panels. When lifting the panels in the second construction area (106), the lifting end of the inverted electric hoist is connected to the first lifting lug (3). When lifting the panels in the third construction area (107), the lifting end of the inverted electric hoist is connected to the second lifting lug (4).

3. The quick replacement structure for a ship bottom plate according to claim 1, characterized in that: After the multiple segments of the second construction area (106) are hoisted into place, the first support frame (5) is installed below the corresponding segments. After the multiple segments of the third construction area (107) are hoisted into place, the second support frame (6) is installed below the corresponding segments.

4. The quick replacement structure for a ship bottom plate according to claim 1, characterized in that: The first lifting lugs (3) and the second lifting lugs (4) each include a turning lifting lug, a barge lifting lug, and a hoisting lifting lug.

5. A construction method for a rapid replacement structure for a ship bottom plate according to any one of claims 1-4, characterized in that: Includes the following steps: S1: On-site measurement and material cutting. The process personnel measure the dimensions of the components in the first construction area (105) by area, and simultaneously remove the old ship hull plating (102) and stiffener bulk structure (104) in the first construction area (105). Then, the process personnel measure the dimensions of the components in the second construction area (106) and the third construction area (107), and complete the section drawing of the second construction area (106) and the third construction area (107). S2: When the old work is carried out on the ship hull plating (102) and the bulk stiffening structure (104) in the first construction area (105), the production workshop will cut and process the materials according to the size of the ship hull plating (102) and the bulk stiffening structure (104). S3: Replace the outer hull plating (102) and the bulk structure of stiffening plate (104) of the first construction area (105). While the first construction area (105) is under construction, the second construction area (106) and the third construction area (107) are manufactured in sections in the production workshop to make corresponding segmented panels. S4: Install the segmented panels of the second construction area (106) and the third construction area (107) in batches according to the segmentation diagram. When installing the second construction area (106), connect the four inverted electric hoists (2) to the corresponding first lifting lugs (3), hoist them to the designated position, and then install the first support frame (5) under the corresponding panel. When installing the third construction area (107), connect the four inverted electric hoists (2) to the corresponding second lifting lugs (4), hoist them to the designated position, and then install the second support frame (6) under the corresponding panel.

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