Ship bottom plate quick replacement structure and construction method thereof

Abstract

The invention 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 hanging type electric hoists, a first supporting frame and a second supporting frame, the ship bottom plate comprises a K-row plate, a ship board outer plate and a straight plate, and a plurality of rib plate bulk structures and the ship board outer plate form a first construction area; a second construction area is formed at the position of the K-row plate, and a third construction area is formed at the position of the straight plate. The bulk structure of the ship side outer plate and related rib plates is divided into a first construction area, a K-row plate area serves as a second construction area, the straight plate end close to the K-row plate serves as a third construction area, a ship bottom plate is divided into three construction areas, and bulk construction is carried out on the complex area of the ship side outer plate in advance; buffering is provided for workshop production preparation, timely feeding and work starting are ensured, synchronous construction can be conducted on a ship site and a production workshop inner site, the construction efficiency is improved, and a guarantee is provided for early undocking of a ship.

Description

Technical Field

[0001] The invention relates to the technical field of ship engineering, and in particular to a rapid replacement structure for a ship bottom plate and a construction method thereof. Background Art

[0002] Due to the particularity of the water environment, as the ship is used for a longer time, or the paint coating is damaged, or the structure is deformed, it is easy to corrode. According to relevant standards, if the bottom plate of the ship has regional significant corrosion, non-pitting corrosion, and the corrosion rate reaches more than 25%, it must be replaced. The traditional replacement of the bottom deck of the hull must be repaired in the dock.

[0003] For example, the Akaris is a chemical tanker. Our company initially planned to repair the right bottom plate of cabin 2 by replacing about 10 tons. However, after the ballast water was drained and thickness measurement was conducted, it was found that the entire cabin structure in the right ballast tank No. 2 was severely corroded. The ship is 11 meters from the middle to the starboard side, with a length of about 28 meters and a height of 1 meter from the bottom plate, all structures need to be replaced. Compared with other cabins, this cabin has a denser structure, with denser transverse frames and thickened stiffeners between the longitudinal longitudinal bones.

[0004] If the traditional bulk construction plan for replacing the bottom plate of the ship is adopted, the ship repair manufacturer cannot obtain the drawings and data because there are curved lines in the entire bottom replacement area of ​​the cabin, which brings difficulties to the cutting of the entire process, and the newly added maintenance materials are difficult to be in place, which causes certain difficulties for the production organization, and the production department cannot supply materials in time. In summary, when the bottom plate of the cabin is replaced, it is necessary to measure the actual size of the ship parts on site before cutting and making parts can be carried out, so as to start the supply of materials. This process takes a lot of time. The traditional bulk construction plan for replacing the bottom plate of the ship cannot guarantee the docking period. Therefore, a rapid replacement structure for the bottom plate and its construction method are proposed. Summary of the invention

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

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a structure for quickly replacing a 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 comprising a K-row plate, a ship side outer plate and a straight plate, a surface of the ship side outer plate is provided with a plurality of rib plate bulk structures, the plurality of rib plate bulk structures and the ship side outer plate constitute a first construction area, the K-row plate constitutes a second construction area, and the straight plate constitutes a third construction area.

[0007] As a further explanation of the present invention, the second construction area and the third construction area are both segmented into multiple panels, and the outer surfaces of the multiple segmented panels in the second construction area are provided with a plurality of first lifting ears, and the outer surfaces of the multiple segmented panels in the third construction area are provided with a plurality of second lifting ears.

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

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

[0010] As a further illustration of the present invention, the plurality of the first lifting eyes and the plurality of the second lifting eyes all include turning lifting eyes, lightering lifting eyes and lifting lifting eyes.

[0011] A construction method for quickly replacing a ship bottom plate structure is also provided, comprising the following steps: S1: On-site measurement and cutting. The process personnel measure the dimensions of the parts in the first construction area by area, and simultaneously dismantle the bulk structure of the ship's side outer plate and rib plate in the first construction area. Then the process personnel measure the dimensions of the parts in the second and third construction areas, and complete the segmented drawings of the second and third construction areas. S2: When dismantling the bulk structure of ship side outer plates and rib plates in the first construction area, the production workshop performs cutting and processing according to the size of the bulk structure of ship side outer plates and rib plates; S3: The bulk structure of the ship's side outer plate and rib plate in the first construction area is renewed. While the first construction area is being constructed, the second construction area and the third construction area are segmented and manufactured in the production workshop to produce corresponding segmented panels; S4: The segmented panels of the second construction area and the third construction area are installed in batches according to the segmentation diagram. When installing the second construction area, four inverted electric hoists are connected to the corresponding first lifting ears, and after hoisting them to the designated position, the first support frame is installed under the corresponding panel. When installing the third construction area, four inverted electric hoists are connected to the corresponding second lifting ears, and after hoisting them to the designated position, the second support frame is installed under the corresponding panel.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. In a rapid replacement structure for a ship bottom plate and a construction method thereof provided by the present invention, the ship bottom plate is divided into three construction areas by dividing the bulk structure of the ship side outer plate and its related rib plate into a first construction area, the K-row plate area as a second construction area, and the straight plate end close to the K-row plate as a third construction area. The complex area at the ship side outer plate is pre-constructed in bulk, which provides a buffer for workshop production preparation, ensures timely material supply and start of work, and can be constructed simultaneously on the ship site and in the production workshop, thereby improving construction efficiency and providing a guarantee for the early launch of the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the ship bottom plate structure of the present invention; Figure 2 This is a schematic diagram of the structure of the first construction area of ​​the present invention; Figure 3 This is a schematic diagram of the structure of the second construction area of ​​the present invention; Figure 4 This is a schematic diagram of the structure of the third construction area of ​​the present invention; Figure 5 This is a schematic diagram of the structure during installation of the second construction area of ​​the present invention; Figure 6 This is a schematic diagram of the structure during installation in the third construction area of ​​the present invention; Figure 7 It is a schematic diagram of the structure of the inverted electric hoist of the present invention.

[0014] In the figure: 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-type plate; 102. ship side outer plate; 103. straight plate; 104. rib plate bulk structure; 105. first construction area; 106. second construction area; 107. third construction area. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Embodiment 1: Please refer to Figure 1-Figure 7The present invention provides a technical solution: a rapid replacement structure for a ship bottom plate, comprising a ship bottom plate 1, four inverted electric hoists 2, a first support frame 5 and a second support frame 6, wherein the ship bottom plate 1 comprises a K-shaped plate 101, a ship side outer plate 102 and a straight plate 103, a surface of the ship side outer plate 102 is provided with a plurality of rib plate bulk structures 104, the plurality of rib plate bulk structures 104 and the ship side outer plate 102 constitute a first construction area 105, the K-shaped plate 101 constitutes a second construction area 106, and the straight plate 103 constitutes a third construction area 107, specifically, The ship's bottom plate 1 is divided into three construction areas by dividing the ship's side outer plate 102 and its related rib bulk structure 104 into a first construction area 105, the K-line plate 101 area as a second construction area 106, and the end of the straight plate 103 close to the K-line plate 101 as a third construction area 107. The complex area at the ship's side outer plate 102 is pre-constructed in bulk, which provides a buffer for workshop production preparation and ensures timely material supply and start of work. It also enables simultaneous construction at the ship site and in the production workshop, thereby improving construction efficiency and providing a guarantee for the ship to be launched from the dock at an early date.

[0017] In this embodiment, the second construction area 106 and the third construction area 107 are both segmented into multiple panels, and the outer surfaces of the multiple segmented panels of the second construction area 106 are provided with a plurality of first lifting ears 3, and the outer surfaces of the multiple segmented panels of the third construction area 107 are provided with a plurality of second lifting ears 4. Four inverted hoists are used to hoist the multiple panels. When hoisting the panels of the second construction area 106, the lifting end of the inverted hoist is connected to the first lifting ear 3, and when hoisting the panels of the third construction area 107, the lifting end of the inverted hoist is connected to the second lifting ear 4. Connection, specifically, the second construction area 106 and the third construction area 107 are segmented into 6 panels, the weight of which is controlled within 10 tons. The second construction area 106 is replaced according to the segmented batch diagram. At this time, the panel of the segmented structure of the second construction area 106 is hoisted by four inverted electric hoists 2 through 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 segmented batch diagram. At this time, the panel of the segmented structure of the third construction area 107 is hoisted by four inverted electric hoists 2 through the second lifting ring.

[0018] In this embodiment, after the multiple segmented panels of the second construction area 106 are hoisted into place, the first support frame 5 is installed under the corresponding panels, and after the multiple segmented panels of the third construction area 107 are hoisted into place, the second support frame 6 is installed under the corresponding panels. Specifically, after the segmented structure panels of the second construction area 106 are hoisted into place, the first support frame 5 is installed under them to support them to ensure construction safety, and after the segmented structure panels of the third construction area 107 are hoisted into place, the second support frame 6 is installed under them to support them to ensure construction safety.

[0019] In this embodiment, the plurality of first lifting ears 3 and the plurality of second lifting ears 4 include turning over lifting ears, transshipment lifting ears and lifting lifting ears. Specifically, in actual needs, appropriate lifting ears are selected according to the weight. In principle, the number of lifting ears for horizontal lifting and transshipment is not less than four, the number of lifting ears for smaller panels is not less than two, and the number of turning over lifting ears is not less than two. The load-bearing capacity of a single lifting ear is not less than one half of the tonnage of the panel.

[0020] In the specific implementation process, the ship that needs to replace the ship bottom plate 1 is introduced into the dock, and the bow and stern of the ship are constructed in batches at the same time. On-site multiple technicians measure the dimensions of the first construction area 105 in batches respectively. At the same time, the ship side outer plate 102 and the rib plate mechanism of the old batch are dismantled synchronously, and the ship side outer plate 102 and the bulk structure are cut and processed at the same time according to the measured dimensions, so that the formed parts of the second construction area 106 and the third construction area 107 are measured and cut immediately afterwards, and the second construction area 106 and the third construction area 107 are cut and processed. 106 and the third construction area 107 are segmented, and the segmentation diagram is drawn. During construction, the first construction area 105 is constructed first. At this time, the ship side outer plate 102 and the plurality of rib plate bulk structures 104 are bulked separately, and the first construction area 105 is constructed and renewed according to the original inventory materials. While the first construction area 105 is being constructed, the K-line plate 101 area of ​​the ship bottom plate 1, i.e., the second construction area 106, and the adjacent straight plate 103, i.e., the second construction area 106, are segmented in the production workshop. After the first construction area 105 is replaced, the second construction area 106 is replaced according to the segmented batch diagram. At this time, the segmented structure of the second construction area 106 is hoisted by four inverted electric hoists 2 through the first lifting ring. After the segmented structure is hoisted 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 segmented batch diagram. At this time, the segmented structure of the third construction area 107 is hoisted by four inverted electric hoists 2 through the second lifting ring. After the segmented structure is hoisted into place, the second support frame 6 is installed below it to support it and ensure construction safety. The bottom plate 1 of the ship is divided into three construction areas, and the complex area at the ship's side outer plate 102 is pre-constructed in bulk, which provides a buffer for workshop production preparation, ensures timely material supply and start of work, and can be constructed simultaneously at the ship site and in the production workshop, thereby improving construction efficiency and providing a guarantee for the early launch of the ship.

[0021] This embodiment also relates to a construction method for the above-mentioned rapid replacement structure of the ship bottom plate, comprising the following steps: S1: On-site measurement and cutting. The process personnel measure the dimensions of the parts of the first construction area 105 by area, and simultaneously dismantle the ship's side outer plate 102 and the rib plate bulk structure 104 of the first construction area 105. Then the process personnel measure the dimensions of the parts of the second construction area 106 and the third construction area 107, and complete the segmented drawings of the second construction area 106 and the third construction area 107. S2: When dismantling the ship side outer plate 102 and the bulk structure of stiffeners 104 in the first construction area 105, the production workshop performs cutting and processing according to the sizes of the ship side outer plate 102 and the bulk structure of stiffeners 104; S3: The ship's side outer plate 102 and the rib plate bulk structure 104 of the first construction area 105 are renewed. While the first construction area 105 is being constructed, the second construction area 106 and the third construction area 107 are segmented in the production workshop to produce corresponding segmented panels; S4: The segmented panels of the second construction area 106 and the third construction area 107 are installed in batches according to the segmentation diagram. When installing the second construction area 106, four inverted electric hoists 2 are connected to the corresponding first lifting ears 3, and after hoisting them to the designated position, the first support frame 5 is installed under the corresponding panel. When installing the third construction area 107, four inverted electric hoists 2 are connected to the corresponding second lifting ears 4, and after hoisting them to the designated position, the second support frame 6 is installed under the corresponding panel.

[0022] In this embodiment, when the bottom plate of the ship is replaced by the construction method of the above steps, the nearly 100-ton steel project is completed in 1.5 days for measurement, 4 days for all cutting, 3 days for segment production, 13 days for compression acceptance, and 15 days for launching, which provides a guarantee for the ship's launching deadline.

[0023] Working principle: When the present invention is used, the ship that needs to replace the ship bottom plate 1 is introduced into the dock, and the bow and stern of the ship are constructed in batches at the same time. A plurality of technicians are used on site to measure the dimensions of the first construction area 105 in batches. At the same time, the ship side outer plate 102 and the rib plate mechanism of the old batch are disassembled synchronously. The ship side outer plate 102 and the bulk structure are cut and processed at the same time according to the measured dimensions, so that the formed parts of the second construction area 106 and the third construction area 107 are measured and cut immediately afterwards, and the second construction area 106 and the third construction area 107 are cut and processed simultaneously. The construction area 106 and the third construction area 107 are divided into sections, and the section diagram is drawn. During construction, the first construction area 105 is constructed first. At this time, the ship's side outer plate 102 and the plurality of rib plate bulk structures 104 are bulked separately, and the first construction area 105 is constructed and renewed according to the original inventory materials. While the first construction area 105 is being constructed, the K-line plate 101 area of ​​the ship's bottom plate 1, i.e., the second construction area 106, and the adjacent straight plate 103, i.e., the second construction area 106, are constructed in the production workshop. The sections are made into jigsaw puzzles. After the first construction area 105 is replaced, the second construction area 106 is replaced according to the segmented batch diagram. At this time, the segmented structure of the second construction area 106 is hoisted by four inverted electric hoists 2 through the first lifting ring. After the segmented structure is hoisted into place, the first support frame 5 is installed thereunder 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 segmented batch diagram. At this time, the jigsaw puzzle of the segmented structure of the third construction area 107 is hoisted by four inverted electric hoists 2 through the second lifting ring. After the jigsaw puzzle of the segmented structure is hoisted into place, the second support frame 6 is installed thereunder to support it and ensure construction safety, thereby dividing the ship bottom plate 1 into three construction areas, and bulk pre-construction is carried out on the complex area at the ship's side outer plate 102, which provides a buffer for workshop production preparation, ensures timely material supply and start of work, and can simultaneously construct on the ship site and in the production workshop, thereby improving construction efficiency and providing a guarantee for the ship to leave the dock as soon as possible.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A structure for quickly replacing a ship bottom plate, 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) comprises a K-shaped plate (101), a ship side outer plate (102) and a straight plate (103); a plurality of rib plate bulk structures (104) are arranged on the surface of the ship side outer plate (102); the plurality of rib plate bulk structures (104) and the ship side outer plate (102) constitute a first construction area (105); the K-shaped plate (101) constitutes a second construction area (106); and the straight plate (103) constitutes a third construction area (107).

2. A rapid replacement structure for ship bottom plate according to claim 1, characterized in that: The second construction area (106) and the third construction area (107) are both divided into multiple panels, and the outer surfaces of the multiple segmented panels of the second construction area (106) are provided with a plurality of first lifting ears (3), and the outer surfaces of the multiple segmented panels of the third construction area (107) are both provided with a plurality of second lifting ears (4).

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

4. A rapid replacement structure for ship bottom plate according to claim 1, characterized in that: After the multiple segmented panels of the second construction area (106) are hoisted into place, the first support frame (5) is installed below the corresponding panels, and after the multiple segmented panels of the third construction area (107) are hoisted into place, the second support frame (6) is installed below the corresponding panels.

5. A rapid replacement structure for ship bottom plate according to claim 2, characterized in that: The plurality of first lifting eyes (3) and the plurality of second lifting eyes (4) all include turning lifting eyes, lightering lifting eyes and lifting lifting eyes.

6. A construction method for a rapid replacement structure of a ship bottom plate according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: On-site measurement and cutting, the process personnel measure the dimensions of the parts in the first construction area (105) by area, and simultaneously dismantle the ship's side outer plate (102) and the rib plate bulk structure (104) in the first construction area (105). Then the process personnel measure the dimensions of the parts in the second construction area (106) and the third construction area (107), and complete the drawing of the segmented drawings of the second construction area (106) and the third construction area (107); S2: When dismantling the ship side outer plate (102) and the bulk structure of stiffener plates (104) in the first construction area (105), the production workshop performs cutting and processing according to the sizes of the ship side outer plate (102) and the bulk structure of stiffener plates (104); S3: The ship's side outer plate (102) and the rib plate bulk structure (104) of the first construction area (105) are replaced. While the first construction area (105) is being constructed, the second construction area (106) and the third construction area (107) are segmented and manufactured in the production workshop to produce corresponding segmented panels; S4: The segmented panels of the second construction area (106) and the third construction area (107) are installed in batches according to the segmented diagram. When installing the second construction area (106), four inverted electric hoists (2) are connected to the corresponding first lifting ears (3), and after hoisting them to a designated position, the first support frame (5) is installed below the corresponding panel. When installing the third construction area (107), four inverted electric hoists (2) are connected to the corresponding second lifting ears (4), and after hoisting them to a designated position, the second support frame (6) is installed below the corresponding panel.

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