Method of roll-on ship saddle integrity construction and roll-on ship

Abstract

The application relates to a method for integrally constructing a roll-on / roll-off ship saddle and a roll-on / roll-off ship, which comprises the following steps: step 1, dividing the saddle into a plurality of saddle pieces; step 2, respectively constructing each saddle piece, installing a panel on a main plate, arranging a line type on the outside of the panel corresponding to a liquid tank, and respectively installing a reinforcing structure on the two sides of the panel; step 3, folding the middle saddle piece and the bottom saddle pieces on the two sides to form a middle assembly; step 4, after the double-layer bottom section is constructed, installing the middle assembly and the side saddle pieces on the inner bottom plate of the double-layer bottom section according to a saddle installation line, and installing the side saddle pieces on the two sides of the middle assembly to form a complete saddle; and step 5, in the dock stage, loading the double-layer bottom section containing the saddle on the ship body, hoisting the liquid tank and the upper structure of the saddle in sequence, and then coating the saddle. The saddle and the double-layer bottom are made into a complete section, the saddle installation and coating are completed in the section stage, the coating integrity of the saddle is ensured, and the loading efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of transport ships, in particular to a method for building a complete roll-on / roll-off ship saddle and a roll-on / roll-off ship. BACKGROUND

[0002] During the construction of a roll-on / roll-off ship, the LNG area saddle is difficult to build, the saddle area involves the line matching of the LNG liquid tank, painting operation, etc., and the operation cycle is relatively long. The conventional method is to divide the saddle into several small pieces, which are bulk-packed at the dock stage. The prior art, such as CN115140268A, discloses a method for manufacturing and installing a double-fuel ship liquid tank saddle in pieces, which divides the saddle into several segment structures, manufactures each segment structure respectively, pre-assembles on a general assembly platform, and hoists and installs on the ship.

[0003] Meanwhile, the deformation occurs during the welding of multiple pieces on the ship, and the painting is damaged during the welding, which greatly increases the operation amount at the dock stage and increases the dock construction cycle. SUMMARY

[0004] To solve the above technical problems, the present application provides a method for building a complete roll-on / roll-off ship saddle and a roll-on / roll-off ship. In the segment stage, the saddle and the double-bottom are made into a complete segment, the LNG liquid tank is hoisted at the dock stage, the upper structure of the saddle is finally mounted, and then painting is performed. Only one hoisting is required during mounting, the number of hoisting during mounting is reduced, the painting integrity of the saddle is ensured, and the mounting efficiency is improved.

[0005] The technical purpose of the present application is achieved by the following technical scheme:

[0006] A method for building a complete roll-on / roll-off ship saddle, the method comprising the following steps:

[0007] Step 1, dividing the saddle into several saddle pieces, the saddle pieces comprising a middle saddle piece, a bottom saddle piece, and a side saddle piece; the bottom saddle piece being adjacent to both sides of the middle saddle piece and being symmetrical about the middle saddle piece, and the side saddle piece being adjacent to the bottom saddle piece and being symmetrical about the middle saddle piece;

[0008] Step 2, building the middle saddle piece, the bottom saddle piece, and the side saddle piece respectively, each piece comprising a main plate, a panel, and a reinforcing structure;

[0009] The panel is first installed on the main plate, the panel is provided with a line corresponding to the outside of the liquid tank, and then the reinforcing structure is installed on both sides of the panel;

[0010] Step 3, folding the middle saddle piece and the two side bottom saddle pieces to form a middle assembly, verifying the line of the panel of the middle assembly, and correcting the parts that do not meet the line requirements;

[0011] Step 4, after the completion of the double-bottom segment, draw the saddle installation line and the saddle inspection line on the inner bottom plate of the double-bottom segment;

[0012] According to the saddle installation line, install the middle assembly and the side saddle piece on the inner bottom plate of the double-bottom segment, install the side saddle piece on both sides of the middle assembly to form a complete saddle, and then perform a complete saddle integrity coating;

[0013] Step 5, in the dock stage, load all double-bottom segments containing saddles onto the hull, hoist the liquid tank and the saddle upper structure in turn, place the liquid tank on the saddle, then buckle the saddle upper structure from above the liquid tank, connect and fix the saddle upper structure and the saddle, and then perform overall coating.

[0014] Further, in step 1, the weight of each piece is not more than 32 tons, and the turning height of each piece is not more than 6m.

[0015] Further, in step 2, after the main plate cutting is completed, an inspection line is drawn between the main plates of the adjacent two saddle pieces, and the inspection line crosses the joint seam of the main plates of the adjacent saddle pieces; during the welding process of steps 3 to 4, if the inspection line on the adjacent main plates is deformed, it is corrected.

[0016] Further, in step 2, after the panel is cut and bent, a template is processed according to the designed line type of the panel, the line type of the panel is checked according to the template, and the line type of the panel is adjusted until the line type of the panel completely matches the line type of the template.

[0017] Further, in step 3, draw the line type inspection line of the panel on the ground, and according to whether the projection of all panels of the middle assembly matches the line type inspection line on the ground after the completion of the middle assembly, if it matches, it meets the requirements, and if it does not match, it is corrected.

[0018] Further, in step 2, the saddle piece is built in a side state, and before the panel is installed, the installation position line of the reinforcing structure is drawn on both sides of the main plate; after the panel is installed, the main plate is placed in a side state, the reinforcing support on one side of the main plate is installed according to the installation position line of the reinforcing structure, and then the main plate is turned over 180 degrees to install the reinforcing support on the other side.

[0019] Further, in step 4, after the complete saddle is formed, a plurality of measurement points are selected on the saddle, the three-dimensional coordinates of each measurement point are measured, and a three-dimensional coordinate model of the saddle is established; the pressure-bearing wood is processed according to the three-dimensional coordinate model of the saddle, and the pressure-bearing wood is provided with the same line type corresponding to the panel.

[0020] Further, in step 5, before the liquid tank is hoisted, the pressure-bearing wood is installed on the panel of the saddle, and polyurethane is filled between the saddle and the pressure-bearing wood; after the liquid tank is hoisted, the pressure-bearing wood is supported below the liquid tank, and the liquid tank and the pressure-bearing wood are connected and fixed.

[0021] Further, the saddle upper structure is installed, and baffles are arranged on both sides of the liquid tank, limit blocks are arranged below the saddle upper structure and correspond to the baffles, the limit blocks are arranged above the baffles, and a cushion is inserted between the baffles and the limit blocks, and then the saddle upper structure is connected and fixed with the saddle.

[0022] The application further provides a roll-on / roll-off ship, wherein a saddle, a liquid tank and a saddle upper structure are arranged on the ship body, and the saddle is installed on the ship body according to the method for integrally constructing the roll-on / roll-off ship saddle.

[0023] Compared with the prior art, the application has the beneficial effects that the saddle and the double-layer bottom are made into an integral section, the saddle upper structure is made into an integral section, the installation and coating of the saddle are completed in the section stage, the LNG liquid tank is hoisted in the dock stage, the saddle upper structure is finally mounted, and then coating is performed, only one hoisting is required during mounting, the number of hoisting in the mounting stage is reduced, the integrality of the coating of the saddle is ensured, and the mounting efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a saddle division schematic diagram in the application.

[0025] Figure 2 is a structure schematic diagram of the saddle in the application.

[0026] Figure 3 is a double-layer bottom section inverted state placement schematic diagram in the application.

[0027] Figure 4 is an assembly schematic diagram of the liquid tank, the saddle upper structure and the saddle in the application.

[0028] In the figure, 1 is a middle saddle piece, 2 is a bottom saddle piece, 3 is a side saddle piece, 4 is a main plate, 5 is a panel, 6 is a reinforcing structure, 7 is a saddle, 8 is a double-layer bottom section, 9 is an inner bottom plate, 10 is an outer plate, 11 is a rib plate, 12 is a longitudinal girder, 13 is a liquid tank, 14 is a saddle upper structure, 15 is a limit block, and 16 is a baffle. DETAILED DESCRIPTION

[0029] The technical solutions of the application are further described below in combination with specific embodiments:

[0030] A method for integrally constructing a roll-on / roll-off ship saddle, the method comprising the following steps:

[0031] Step 1, dividing the saddle into a plurality of saddle pieces, the saddle pieces comprising a middle saddle piece 1, a bottom saddle piece 2 and a side saddle piece 3, as shown in Figure 1As shown; the bottom saddle piece 2 is adjacent to both sides of the middle saddle piece 1 and symmetric about the middle saddle piece 1, and the side saddle piece 3 is adjacent to the bottom saddle piece 2 and symmetric about the middle saddle piece 1;

[0032] The weight of a single piece is preferably no more than 32 tons, and the turning height is no more than 6m, ensuring that the segmented construction site can be hoisted and turned over.

[0033] Step 2, the middle saddle piece, the bottom saddle piece and the side saddle piece are built respectively, and each piece includes a main plate 4, a panel 5 and a reinforcing structure 6;

[0034] Specifically, the main plate 4 of each piece is marked with a cutting contour line on the steel plate according to the divided shape and size, and after the main plate 4 of each piece is cut, a check line is marked between the main plates of the adjacent two saddle pieces, the check line crosses the splicing joint of the main plates of the adjacent saddle pieces, and the splicing joint is used to check whether the main plate is deformed in the subsequent welding process. If the check line on the adjacent main plate is deformed, the main plate is corrected.

[0035] The panel 5 is also cut and cut according to the size and shape of the design, and after cutting, it is bent to form a corresponding line type corresponding to the outside of the liquid filling. When bending, the line type of the template is used for line type inspection. When making the template, the line type drawing of the panel is pasted on the wood board by 1:1 printing, and the line type of the template is cut according to the line type. When checking, the line type of the template is matched with the line type of the panel, and the area of the panel that does not match is adjusted until the line type of the panel completely matches the line type of the template.

[0036] The reinforcing structure 6 is selected from T-shaped profiles, and the length is cut according to the design length, and the installation position line of the reinforcing structure is marked on both sides of the main plate 4;

[0037] The main plate 4 is placed in a side state, and the panel 5 is installed on the main plate 4. The panel is installed in the middle, and the panel is marked with a main plate installation line in the cutting stage. The main plate is installed in the middle of the panel along the main plate installation line, and then the reinforcing structure 6 on one side of the main plate 4 is installed according to the installation position line. Then the main plate 4 is turned over by 180 degrees and placed in a side state, and then the reinforcing structure 6 on the other side is installed according to the installation position line.

[0038] All the saddle pieces are completed according to the above method.

[0039] Step 3, the middle saddle piece is folded with the two bottom saddle pieces on both sides to form a middle assembly, and the line type of the panel of the middle assembly is checked, and the part that does not meet the line type requirement is corrected;

[0040] Specifically, the line type inspection line of the panel is marked on the ground in advance when checking, and whether the projection of all the panels of the middle assembly matches the line type inspection line on the ground is matched after the middle assembly is built. If it matches, it meets the requirements, and if it does not match, it is corrected.

[0041] Step 4, when the double-bottom segment 8 is built, as shown in FIG. 2, the inner bottom plate 9 is used as a base surface to build the segment in reverse, saddle rib plates 11 and longitudinal plates 12 are installed on the inner bottom plate 9, and then the outer plate 10 is scattered and pasted, the inner bottom plate 9 is turned over, and the outer plate 10 is welded in normal position to complete the double-bottom segment. Figure 3

[0042] After the double-bottom segment 8 is built, saddle installation lines and saddle inspection lines are drawn on the inner bottom plate 9 of the double-bottom segment 8.

[0043] After the complete saddle is formed, a plurality of measuring points are selected on the saddle, three-dimensional coordinates of each measuring point are measured by using a total station, and a three-dimensional coordinate model of the saddle is established in a three-dimensional image software (such as DACS software or ECO software) according to the measured three-dimensional coordinates; the three-dimensional coordinate model is used for assembly simulation of the liquid tank to ensure that the precision of the saddle meets the requirements of the liquid tank installation.

[0044] Pressure-bearing wood is processed according to the data of the three-dimensional coordinate model of the saddle, and the pressure-bearing wood has the same line type as the panel.

[0045] The middle group stand and the side saddle pieces are installed on the inner bottom plate of the double-bottom segment according to the saddle installation lines, the side saddle pieces are installed on both sides of the middle group stand to form a complete saddle, and the precision of the saddle installation is inspected through the inspection lines. After the saddle installation is completed, the saddle is painted to ensure the integrity of the saddle painting.

[0046] Step 5, in the dock stage, all double-bottom segments 8 containing saddles 7 are loaded onto the ship body, and the liquid tank 13 and the saddle upper structure 14 are hoisted in sequence.

[0047] Before the liquid tank is hoisted, the pressure-bearing wood is installed on the panel of the saddle 7, and polyurethane is filled between the saddle 7 and the pressure-bearing wood; after the liquid tank 13 is hoisted, the pressure-bearing wood is supported below the liquid tank, threaded holes are formed on the pressure-bearing wood, and the liquid tank and the pressure-bearing wood are fixed by bolt connection.

[0048] Then, the saddle upper structure 14 is buckled on the upper side of the liquid tank 13 from the upper side, the saddle upper structure 14 is installed with a baffle 16 arranged on both sides of the liquid tank 13, a limiting block 15 is arranged below the saddle upper structure 14 and corresponds to the baffle 16, the limiting block 15 is arranged above the baffle 16, a spacer is inserted between the baffle 16 and the limiting block 15, and then the saddle upper structure 14 and the saddle 7 are fixed by bolt connection, as shown in FIG. 6, and finally the whole is painted. Figure 4

[0049] ​​The embodiment is further explanation of the present application, and is not limitation of the present application, and the person skilled in the art can make non-creative modification to the embodiment according to the need after reading the specification, but as long as in the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A method of roll-on ship saddle integrity construction, characterized by, The method comprises the following steps: Step 1, the saddle is divided into several saddle pieces, the saddle pieces include middle saddle piece, bottom saddle piece, side saddle piece; the bottom saddle piece is adjacent to the two sides of the middle saddle piece and is symmetrical about the middle saddle piece, and the side saddle piece is adjacent to the bottom saddle piece and is symmetrical about the middle saddle piece; Step 2, the middle saddle piece, the bottom saddle piece and the side saddle piece are respectively built, each piece comprises a main plate, a panel and a reinforcing structure; First, the panel is installed on the main plate, the panel is provided with a linear type corresponding to the outside of the liquid tank, and then the reinforcing structure is installed on both sides of the panel; Step 3, the middle saddle piece and the two side bottom saddle pieces are folded to form a middle assembly, the linear type of the panel of the middle assembly is checked, and the part not meeting the linear type requirement is corrected; Step 4, after the segmented construction of the double-layer bottom is completed, a saddle installation line and a saddle inspection line are drawn on the inner bottom plate of the double-layer bottom; According to the saddle installation line, the middle assembly and the side saddle piece are installed on the inner bottom plate of the double-layer bottom, the side saddle piece is installed on both sides of the middle assembly to form a complete saddle, and then the complete saddle is painted; Step 5, in the dock stage, all double-layer bottom segments containing the saddle are loaded onto the ship body, the liquid tank and the saddle upper structure are successively hoisted, the liquid tank is placed on the saddle, then the saddle upper structure is buckled above the liquid tank from above, the saddle upper structure is connected and fixed with the saddle, and then overall painting is performed.

2. A method of integrated construction of a roll-on / roll-off ship saddle as claimed in claim 1, wherein, In the step 1, the weight of each piece is not more than 32 tons, and the turning height of each piece is not more than 6 m.

3. A method of integrated construction of a roll-on / roll-off ship saddle as claimed in claim 1, wherein, In the step 2, after the main plate is cut, an inspection line is drawn between the main plates of the two adjacent saddle pieces, the inspection line crosses the splicing joint of the main plates of the adjacent saddle pieces; in the welding process of the steps 3 to 4, if the inspection line on the adjacent main plates is deformed, correction is performed.

4. A method of integrated construction of a roll-on / roll-off ship saddle as claimed in claim 1, wherein, In the step 2, after the panel is cut, bending processing is performed, a template is processed according to the linear type of the panel, the linear type of the panel is checked according to the template, and the linear type of the panel is adjusted until the linear type of the panel completely matches the linear type of the template.

5. A method of integrated construction of a roll-on / roll-off ship saddle as claimed in claim 1, wherein, In the step 3, the linear type inspection line of the panel is drawn on the ground, whether the projection of all the panels of the middle assembly matches the linear type inspection line of the ground after the middle assembly is built is checked, if the projection matches the linear type inspection line of the ground, the requirement is met, and if the projection does not match the linear type inspection line of the ground, correction is performed.

6. A method of integrated construction of a roll-on / roll-off ship saddle as claimed in claim 1, wherein, In the step 2, the side state of the saddle piece is built, the installation position line of the reinforcing structure is drawn on both sides of the main plate before the panel is installed; after the panel is installed, the main plate is placed in the side state, the reinforcing support on one side of the main plate is installed according to the installation position line of the reinforcing structure, and then the main plate is turned by 180 degrees to install the reinforcing support on the other side.

7. A method of integrated construction of a roll-on / roll-off ship saddle as claimed in claim 1, wherein, In the step 4, after the complete saddle is formed, a plurality of measurement points are selected on the saddle, the three-dimensional coordinates of each measurement point are measured, and a three-dimensional coordinate model of the saddle is established; the pressure bearing wood is processed according to the three-dimensional coordinate model of the saddle, and the pressure bearing wood is provided with the same linear type corresponding to the panel.

8. A method of integrity construction of a roll-on / roll-off ship saddle according to claim 7, characterized in that, In the step 5, before the liquid tank is hoisted, the pressure bearing wood is installed on the panel of the saddle, and polyurethane is filled between the saddle and the pressure bearing wood; after the liquid tank is hoisted, the pressure bearing wood is supported below the liquid tank, and the liquid tank and the pressure bearing wood are connected and fixed.

9. A method of integrated construction of a roll-on / roll-off ship saddle as claimed in claim 1, wherein, When the saddle superstructure is installed, baffles are arranged on both sides of the liquid tank, limit blocks are arranged below the saddle superstructure corresponding to the baffles, the limit blocks are arranged above the baffles, and a spacer is inserted between the baffles and the limit blocks, and then the saddle superstructure is connected and fixed with the saddle.

10. A ro-ro ship, characterized by The ship body is provided with a saddle, a liquid tank and a saddle superstructure, and the saddle is installed on the ship body according to the method of any one of claims 1-9.

Images