Method for assembling annular block of ship

Abstract

The invention relates to the technical field of ship construction, and discloses a ship annular block assembly method, which comprises the following steps of: drawing a corresponding ship body center line, a ship body longitudinal section line, a ship body rib detection line and a ship body waterline in an overall design drawing of a ship body according to the actual segmentation condition of the ship body; marking is correspondingly drawn on the built bottom section, the built broadside section and the built transverse bulkhead section in sequence as the basis; a bottom center line, a bottom rib detection line, a broadside longitudinal section line, a broadside rib detection line, a transverse bulkhead center line and a transverse bulkhead rib detection line are used for alignment and adjustment to replace data measurement of closure openings in the prior art so as to achieve alignment and butt joint of the closure openings. The problem that the alignment precision is poor due to the fact that a closing opening data measuring instrument cannot be arranged due to the narrow total assembly site is solved, the total assembly precision is guaranteed, and then the structural strength, water tightness and overall precision of a ship body are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and in particular to a method for assembling a ship's annular block Background Art

[0002] The annular block construction method is a modern shipbuilding method, which transversely cuts the hull into multiple annular three-dimensional segments along the ship length direction, and each segment is called a block, such as the bow block, the stern block, etc. In the actual construction process, each block will be further divided into smaller segments according to the hull structure, such as bulkhead, bottom and side shell segments. The annular block construction method usually first assembles and welds segments such as bulkheads, bottoms and side shells on a welding platform or jig to combine small segments into blocks, and then moves each block to the dry dock for general assembly, and then combines them to construct a complete hull

[0003] In shipbuilding, the butting joint is the part where two or more hull segments (or blocks) need to be butted and connected during the assembly process. These parts are usually openings or seams in the hull structure, and need to be accurately aligned and firmly connected during the construction process. The quality of the butting joint directly affects the structural strength, watertightness and overall accuracy of the hull

[0004] In the prior art, in order to align the butting joint, a reference coordinate system is usually established according to the overall hull design drawing, the three-dimensional coordinates of the butting joint are measured and checked and adjusted based on the overall hull design drawing to achieve accurate docking. However, in order to maximize the utilization of site resources, shipyards usually control the space size of the assembly site and the dry dock. This makes it that when assembling segments or blocks, only a space slightly larger than the block size is reserved in the assembly site or dry dock, and the butting joint is only a short distance away from the edge of the assembly site or the dry dock wall, making it difficult to erect scaffolding and carry out construction operations; that is, it is difficult to measure the data of the butting joint, and the accuracy of the assembly cannot be guaranteed, thus affecting the structural strength, watertightness and overall accuracy of the hull Summary of the Invention

[0005] The object of the present invention is to provide a method for assembling a ship's annular block, which solves the problem in the prior art that it is difficult to erect scaffolding and carry out construction operations because the butting joint is only a short distance away from the edge of the assembly site or the dry dock wall, resulting in difficulty in measuring the data of the butting joint and inability to guarantee the assembly accuracy

[0006] To achieve the above object, the present invention provides a method for assembling a ship's annular block, which includes the following steps

[0007] S1. Divide the hull into multiple annular blocks, and then divide each annular block into a bottom segment, a side shell segment and a transverse bulkhead segment

[0008] S2. Build the bottom section, side section, and transverse bulkhead section respectively at the building jig positions.

[0009] S3. In the overall design drawing of the hull, establish a reference coordinate system with the length direction of the hull as the X-axis, the width direction of the hull as the Y-axis, and the width direction of the hull as the Z-axis. Draw the hull center line, hull longitudinal section line, hull rib inspection line, and hull water line respectively in the reference coordinate system.

[0010] The number of the hull rib inspection lines is the same as that of the ring blocks, and the hull rib inspection lines are arranged in one-to-one correspondence with the transverse bulkhead sections. Vertically, at least part of the projection of the hull rib inspection line overlaps with the midline of the transverse bulkhead section in the ship length direction. The side section is penetrated by at least one hull longitudinal section line.

[0011] S4. Mark the bottom center line, bottom longitudinal section line, and bottom rib inspection line on the built bottom section corresponding to the hull center line, hull longitudinal section line, hull rib inspection line, and hull water line; mark the side water line, side longitudinal section line, and side rib inspection line on the built side section; mark the transverse bulkhead center line, transverse bulkhead longitudinal section line, and transverse bulkhead rib inspection line on the built transverse bulkhead section.

[0012] S5. Lift the bottom section to the assembly site and place the bottom section horizontally.

[0013] Establish a temporary coordinate system with the bottom center line as the X-axis, the bottom rib inspection line as the Y-axis, and the vertical direction as the Z-axis.

[0014] S6. Lift the transverse bulkhead section onto the bottom section, adjust the transverse bulkhead section so that the bottom center line and the transverse bulkhead center line are continuous and located in the XOZ plane of the temporary coordinate system, and the transverse bulkhead rib inspection line is located in the YOZ plane of the temporary coordinate system, and perform combined connection on the mating joints of the transverse bulkhead section and the bottom section.

[0015] S7. Lift the side section onto the bottom section, adjust the side section so that the bottom rib inspection line and the side rib inspection line are continuous and located in the YOZ plane of the temporary coordinate system, and the side longitudinal section line is parallel to the XOZ plane of the temporary coordinate system, and perform combined connection on the mating joints of the side section and the bottom section.

[0016] S8. Assemble the completed ring blocks.

[0017] Further, the specific steps of step S3 include:

[0018] S3-1. In the overall design drawing of the hull, taking the midpoint of the stern in the ship width direction as the origin, taking the length direction of the hull as the X-axis, taking the width direction of the hull as the Y-axis, and taking the width direction of the hull as the Z-axis, establish a reference coordinate system;

[0019] S3-2. Draw the center line of the hull in the XOZ plane of the reference coordinate system;

[0020] S3-3. Draw the longitudinal section lines of the hull in a plane parallel to the XOZ plane of the reference coordinate system, and make sure that at least one of the longitudinal section lines of the hull penetrates the side section;

[0021] S3-4. Draw the rib inspection lines of the hull in a plane parallel to the YOZ plane of the reference coordinate system, and make sure that in the vertical direction, at least part of the projection of the rib inspection lines of the hull overlaps with the midline of the transverse bulkhead section in the ship length direction;

[0022] S3-5. Draw the waterlines of the hull in a plane parallel to the YOZ plane of the reference coordinate system.

[0023] Furthermore, the specific steps of step S4 include:

[0024] S4-1. Draw the bottom center line according to the center line of the hull, so that the bottom center line overlaps with the center line of the hull; draw the bottom longitudinal section line according to the longitudinal section line of the hull, so that the bottom longitudinal section line overlaps with the longitudinal section line of the hull; draw the bottom rib inspection line according to the corresponding rib inspection line of the hull, so that the bottom rib inspection line overlaps with the corresponding rib inspection line of the hull;

[0025] S4-2. Draw the side longitudinal section line according to the longitudinal section line of the hull penetrating the side, so that the side longitudinal section line overlaps with the corresponding longitudinal section line of the hull; draw the side rib inspection line according to the corresponding rib inspection line of the hull, so that the side rib inspection line overlaps with the corresponding rib inspection line of the hull; draw the side waterline according to the waterline of the hull, so that the side waterline overlaps with the waterline of the hull;

[0026] S4-3. Draw the transverse bulkhead center line according to the center line of the hull, so that the transverse bulkhead center line overlaps with the center line of the hull; draw the transverse bulkhead rib inspection line according to the corresponding rib inspection line of the hull, so that the transverse bulkhead rib inspection line overlaps with the corresponding rib inspection line of the hull; draw the transverse bulkhead longitudinal section line according to the longitudinal section line of the hull, so that the transverse bulkhead longitudinal section line overlaps with the longitudinal section line of the hull.

[0027] Furthermore, the specific steps of step S5 include:

[0028] S5-1. Combine the dimensions of the overall assembly site and the overall design drawing of the hull to judge the predetermined overall assembly position of the annular sub-assembly to be overall assembled;

[0029] If, at the predetermined pre-assembly position, the distance between the butting joints of the segments in the annular section to be pre-assembled and the dock wall of the pre-assembly site is greater than 1 m, hoist the corresponding bottom segment to the predetermined pre-assembly position in the pre-assembly site;

[0030] If, at the predetermined pre-assembly position, the distance between the butting joints of the segments in the annular section to be pre-assembled and the dock wall of the pre-assembly site is less than or equal to 1 m, hoist the corresponding bottom segment to another position in the pre-assembly site, such that at the other position, the distance between the butting joints of the segments in the annular section to be pre-assembled and the dock wall of the pre-assembly site is greater than 1 m;

[0031] S5-2. Place the bottom segment horizontally;

[0032] S5-3. Establish a temporary coordinate system with the bottom center line as the X-axis, the bottom rib inspection line as the Y-axis, and the vertical direction as the Z-axis.

[0033] Further, the specific steps for placing the bottom segment horizontally in step S5-2 include:

[0034] Set up a laser theodolite to perform horizontal measurements on multiple points on the top surface of the bottom segment;

[0035] Adjust the levelness of the bottom segment such that the levelness does not exceed 8 mm.

[0036] Further, the specific steps of step S6 include:

[0037] S6-1. Hoist the transverse bulkhead segment onto the bottom segment;

[0038] S6-2. Set up a total station on the bottom segment, use the total station to measure the transverse bulkhead center line and the bottom center line, and adjust the transverse bulkhead segment according to the measurement results so that the bottom center line and the transverse bulkhead center line are continuous and located in the XOZ plane of the temporary coordinate system;

[0039] S6-3. Use the total station to measure the transverse bulkhead rib inspection line, and adjust the transverse bulkhead segment according to the measurement results so that the transverse bulkhead rib inspection line is located in the YOZ plane of the temporary coordinate system;

[0040] S6-4. Combine and connect the butting joints of the transverse bulkhead segment and the bottom segment.

[0041] Further, the specific steps of step S7 include:

[0042] S7-1. Hoist the side shell segment onto the bottom segment;

[0043] S7-2. Set up a total station on the segmented bottom. Use the total station to measure the side rib inspection line and the bottom rib inspection line, and adjust the side segment according to the measurement results so that the side rib inspection line and the bottom rib inspection line are continuous and located in the YOZ plane of the temporary coordinate system.

[0044] S7-3. Use the total station to measure the side longitudinal section line, and adjust the side segment according to the measurement results so that the side longitudinal section line is parallel to the XOZ plane of the temporary coordinate system.

[0045] S7-4. Use the total station to measure the side waterline so that the level error between the side waterline and the bottom segment does not exceed 5 mm.

[0046] S7-5. Combine and connect the mating joints of the side segment and the bottom segment.

[0047] Further, step S4 further includes step S4-1.

[0048] Step S4-1. Mark multiple first mating joint alignment lines on the bottom segment corresponding to the positions of each mating joint.

[0049] Mark multiple second mating joint alignment lines on the side segment corresponding to the positions of each mating joint.

[0050] Mark multiple third mating joint alignment lines on the transverse bulkhead segment corresponding to the positions of each mating joint.

[0051] Further, the specific steps of step S1 include:

[0052] S1-1. According to the overall hull design drawing, select the position with a smaller hull half-width, and set the mating joint of the annular sub-assembly at the position with a smaller hull half-width, so that the hull is divided into multiple annular sub-assemblies.

[0053] S1-2. Then divide each annular sub-assembly into a bottom segment, a side segment, and a transverse bulkhead segment.

[0054] Further, the specific steps of step S1 include:

[0055] S1-1. According to the overall hull design drawing and in combination with the structure and dimensions of the assembly site, set the mating joint of the annular sub-assembly in the area of the assembly site where assembly construction can be carried out, so that the hull is divided into multiple annular sub-assemblies.

[0056] S1-2. Then divide each annular sub-assembly into a bottom segment, a side segment, and a transverse bulkhead segment.

[0057] Compared with the prior art, the beneficial effects of a method for assembling ship annular sub-assemblies provided by the present invention are as follows:

[0058] A method for assembling a ship's annular sub - assembly unit provided by the present invention involves drawing corresponding hull centerlines, longitudinal section lines, rib inspection lines, and waterlines in the overall design drawing of the hull according to the actual segmentation of the hull; and based on these in sequence, making markings on the built - bottom segment, side segment, and transverse bulkhead segment.

[0059] By horizontally setting the bottom centerline and bottom rib inspection line in the bottom segment in the assembly site and combining with the establishment of a temporary coordinate system in the vertical direction; by adjusting the transverse bulkhead segment to make the bottom centerline and the transverse bulkhead centerline continuous and located in the XOZ plane of the temporary coordinate system, and the transverse bulkhead rib inspection line located in the YOZ plane of the temporary coordinate system to determine the relative position between the transverse bulkhead segment and the bottom segment, thereby replacing the butt - joint measurement step in the assembly process of the bottom segment and the transverse bulkhead segment; combining and connecting the butt - joints of the transverse bulkhead segment and the bottom segment to achieve the assembly of the bottom segment and the transverse bulkhead segment.

[0060] By adjusting the side segment to make the bottom rib inspection line and the side rib inspection line continuous and located in the YOZ plane of the temporary coordinate system, and the side longitudinal section line parallel to the XOZ plane of the temporary coordinate system to determine the relative position between the side segment and the bottom segment, thereby replacing the butt - joint measurement step in the assembly process of the bottom segment and the side segment, and combining and connecting the butt - joints of the side segment and the bottom segment to achieve the assembly of the bottom segment and the side segment.

[0061] Thus, the connection and combination among the bottom segment, side segment, and transverse bulkhead segment in the annular sub - assembly unit are realized; further, each annular sub - assembly unit is assembled to obtain a complete hull. By using the bottom centerline, bottom rib inspection line, side longitudinal section line, side rib inspection line, transverse bulkhead centerline, and transverse bulkhead rib inspection line for alignment and adjustment to replace the measurement of butt - joint data in the prior art to achieve the alignment and docking of the butt - joints, so as to avoid the problem of poor alignment accuracy caused by the narrow assembly site where it is impossible to arrange butt - joint data measuring instruments, thereby ensuring the accuracy of the assembly, and further ensuring the structural strength, watertightness, and overall accuracy of the hull. Description of the Drawings

[0062] Figure 1 is a flowchart of a method for assembling a ship's annular sub - assembly unit according to an embodiment of the present invention;

[0063] Figure 2 is a three - dimensional structural schematic diagram of the bottom segment, side segment, and transverse bulkhead segment in a method for assembling a ship's annular sub - assembly unit according to an embodiment of the present invention;

[0064] Figure 3 is a three - dimensional structural schematic diagram of the bottom segment in a method for assembling a ship's annular sub - assembly unit according to an embodiment of the present invention;

[0065] Figure 4 It is a three-dimensional structural schematic diagram of a side shell section in a ship ring block erection method according to an embodiment of the present invention;

[0066] Figure 5 It is a three-dimensional structural schematic diagram of a transverse bulkhead section in a ship ring block erection method according to an embodiment of the present invention.

[0067] In the figure, 1 is the bottom section; 11 is the bottom center line; 12 is the bottom longitudinal section line; 13 is the bottom rib inspection line; 14 is the first butting line for alignment; 2 is the side shell section; 21 is the side shell water line; 22 is the side shell longitudinal section line; 23 is the side shell rib inspection line; 24 is the second butting line for alignment; 3 is the transverse bulkhead section; 31 is the transverse bulkhead center line; 32 is the transverse bulkhead longitudinal section line; 33 is the transverse bulkhead rib inspection line; 34 is the transverse bulkhead rib inspection line. Specific embodiments

[0068] The following will further describe in detail the specific embodiments of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0069] In the description of the present invention, it should be understood that the term "hull center line" is used in the field of shipbuilding and generally refers to the preset ship symmetry axis in the design drawings, which is used to divide the hull into left and right halves; the hull center line is usually drawn through the keel point. The "hull center line" is one of the reference lines in the ship width direction. The term "hull longitudinal section line" is used in the field of shipbuilding and generally refers to the line parallel to the hull center line in the design drawings, which is used as another reference line in the ship width direction; the hull longitudinal section line is usually drawn by establishing a hull coordinate system and drawing it parallel to the hull center line. The term "hull rib inspection line" is used in the field of shipbuilding and generally refers to the line perpendicular to the hull center line in the design drawings, which is used for analyzing and designing the hull structure; the hull rib inspection line perpendicular to the hull center line is usually drawn by establishing a hull coordinate system and according to the hull structure and design requirements. The "hull rib inspection line" is the reference line in the ship length direction. The term "hull water line" is used in the field of shipbuilding and generally refers to the line where the water surface intersects the hull when the ship floats in still water. It is usually determined and drawn through simulation analysis. The "hull water line" is used as the reference line in the ship height direction.

[0070] As Figures 1 to 5 shown, a ship ring block erection method according to an embodiment of the present invention includes the following steps:

[0071] S1. Divide the hull into multiple ring blocks, and then divide each ring block into a bottom section 1, a side shell section 2, and a transverse bulkhead section 3;

[0072] S2. Build the bottom section 1, side section 2 and transverse bulkhead section 3 respectively at the building jig positions.

[0073] S3. In the overall design drawing of the hull, establish a reference coordinate system with the length direction of the hull as the X-axis, the width direction of the hull as the Y-axis, and the width direction of the hull as the Z-axis; draw the hull center line, hull longitudinal section line, hull rib inspection line and hull water line respectively in the reference coordinate system.

[0074] The number of the hull rib inspection lines is the same as that of the ring sections, and the hull rib inspection lines are arranged in one-to-one correspondence with the transverse bulkhead section 3; in the vertical direction, at least part of the projection of the hull rib inspection line overlaps with the center line of the transverse bulkhead section 3 in the ship length direction; at least one hull longitudinal section line penetrates through the side section 2.

[0075] S4. Mark the bottom center line 11, bottom longitudinal section line 12 and bottom rib inspection line 13 on the built bottom section 1 corresponding to the hull center line, hull longitudinal section line, hull rib inspection line and hull water line; mark the side water line 21, side longitudinal section line 22 and side rib inspection line 23 on the built side section 2; mark the transverse bulkhead center line 31, transverse bulkhead longitudinal section line 32 and transverse bulkhead rib inspection line 33 on the built transverse bulkhead section 3.

[0076] S5. Lift the bottom section 1 to the assembly site and place the bottom section 1 horizontally.

[0077] Establish a temporary coordinate system with the bottom center line 11 as the X-axis, the bottom rib inspection line 13 as the Y-axis and the vertical direction as the Z-axis.

[0078] S6. Lift the transverse bulkhead section 3 onto the bottom section 1, adjust the transverse bulkhead section 3 so that the bottom center line 11 and the transverse bulkhead center line 31 are continuous and located in the XOZ plane of the temporary coordinate system; the transverse bulkhead rib inspection line 33 is located in the YOZ plane of the temporary coordinate system, and perform combined connection on the joint of the transverse bulkhead section 3 and the bottom section 1.

[0079] S7. Lift the side section 2 onto the bottom section 1, adjust the side section 2 so that the bottom rib inspection line 13 and the side rib inspection line 23 are continuous and located in the YOZ plane of the temporary coordinate system, and the side longitudinal section line 22 is parallel to the XOZ plane of the temporary coordinate system, and perform combined connection on the joint of the side section 2 and the bottom section 1.

[0080] S8. Assemble the completed ring sections.

[0081] Based on the above technical solution, corresponding hull centerlines, hull longitudinal section lines, hull rib inspection lines, and hull waterlines are drawn in the overall design drawing of the hull according to the actual segmentation of the hull; and based on these in turn, identification markings are drawn on the built bottom segment 1, side segment 2, and transverse bulkhead segment 3 respectively.

[0082] A temporary coordinate system is established by the bottom centerline 11 and the bottom rib inspection line 13 horizontally arranged in the bottom segment 1 in the assembly site and combined with the vertical direction; by adjusting the transverse bulkhead segment 3, the bottom centerline 11 and the transverse bulkhead centerline 31 are made continuous and located in the XOZ plane of the temporary coordinate system, and the transverse bulkhead rib inspection line 33 is located in the YOZ plane of the temporary coordinate system to determine the relative positions of the transverse bulkhead segment 3 and the bottom segment 1, thereby replacing the joint measurement step during the assembly process of the bottom segment 1 and the transverse bulkhead segment 3; the joints of the transverse bulkhead segment 3 and the bottom segment 1 are combined and connected to achieve the assembly of the bottom segment 1 and the transverse bulkhead segment 3.

[0083] By adjusting the side segment 2, the bottom rib inspection line 13 and the side rib inspection line 23 are made continuous and located in the YOZ plane of the temporary coordinate system, and the side longitudinal section line 22 is parallel to the XOZ plane of the temporary coordinate system to determine the relative positions of the side segment 2 and the bottom segment 1, thereby replacing the joint measurement step during the assembly process of the bottom segment 1 and the side segment 2, and the joints of the side segment 2 and the bottom segment 1 are combined and connected to achieve the assembly of the bottom segment 1 and the side segment 2.

[0084] Thus, the connection and combination among the bottom segment 1, the side segment 2, and the transverse bulkhead segment 3 in the ring-shaped sub-assembly are realized; further, each ring-shaped sub-assembly is assembled to obtain a complete hull. By using the bottom centerline 11, the bottom rib inspection line 13, the side longitudinal section line 22, the side rib inspection line 23, the transverse bulkhead centerline 31, and the transverse bulkhead rib inspection line 33 for alignment and adjustment to replace the measurement of joint data in the prior art to achieve the alignment and docking of the joints, the problem of poor alignment accuracy caused by the narrow assembly site where it is impossible to arrange joint data measuring instruments is avoided, thereby ensuring the accuracy of the assembly and further ensuring the structural strength, watertightness, and overall accuracy of the hull.

[0085] Furthermore, the specific steps of step S3 include:

[0086] S3-1. In the overall design drawing of the hull, taking the midpoint of the ship stern in the ship width direction as the origin, taking the ship length direction as the X-axis, taking the ship width direction as the Y-axis, and taking the ship width direction as the Z-axis, a reference coordinate system is established.

[0087] S3-2. Draw the hull centerline in the XOZ plane of the reference coordinate system.

[0088] S3-3. Draw the longitudinal section line of the hull in the reference coordinate system, and make the longitudinal section line of the hull parallel to the XOZ plane of the reference coordinate system;

[0089] S3-4. Draw the rib inspection line of the hull in the reference coordinate system, and make the rib inspection line of the hull parallel to the YOZ plane of the reference coordinate system;

[0090] S3-5. Draw the waterline of the hull in the reference coordinate system, and make the waterline of the hull parallel to the XOY plane of the reference coordinate system.

[0091] Through the above steps, specifically draw the center line of the hull, the longitudinal section line of the hull, the rib inspection line of the hull and the waterline of the hull in combination with the reference coordinate system.

[0092] As Figures 2 to 5 shown, further, the specific steps of step S4 include:

[0093] S4-1. Draw the bottom center line 11 according to the center line of the hull, so that the bottom center line 11 overlaps with the center line of the hull; draw the bottom longitudinal section line 12 according to the longitudinal section line of the hull, so that the bottom longitudinal section line 12 overlaps with the longitudinal section line of the hull; draw the bottom rib inspection line 13 according to the corresponding rib inspection line of the hull, so that the bottom rib inspection line 13 overlaps with the corresponding rib inspection line of the hull;

[0094] S4-2. Draw the side longitudinal section line 22 according to the longitudinal section line of the hull passing through the side, so that the side longitudinal section line 22 overlaps with the corresponding longitudinal section line of the hull; draw the side rib inspection line 23 according to the corresponding rib inspection line of the hull, so that the side rib inspection line 23 overlaps with the corresponding rib inspection line of the hull; draw the side waterline 21 according to the waterline of the hull, so that the side waterline 21 overlaps with the waterline of the hull;

[0095] S4-3. Draw the transverse bulkhead center line 31 according to the center line of the hull, so that the transverse bulkhead center line 31 overlaps with the center line of the hull; draw the transverse bulkhead rib inspection line 33 according to the corresponding rib inspection line of the hull, so that the transverse bulkhead rib inspection line 33 overlaps with the corresponding rib inspection line of the hull; draw the transverse bulkhead longitudinal section line 32 according to the longitudinal section line of the hull, so that the transverse bulkhead longitudinal section line 32 overlaps with the longitudinal section line of the hull.

[0096] Through the above steps, specifically draw the bottom center line 11, the bottom longitudinal section line 12 and the bottom rib inspection line 13 of the bottom section in combination with the center line of the hull, the longitudinal section line of the hull, the rib inspection line of the hull and the waterline of the hull in the reference coordinate system, specifically draw the side longitudinal section line 22, the side rib inspection line 23 and the side waterline 21 of the side section 2, and specifically draw the transverse bulkhead center line 31, the transverse bulkhead rib inspection line 33 and the transverse bulkhead longitudinal section line 32 of the transverse bulkhead section 3.

[0097] Further, the specific steps of step S5 include:

[0098] S5-1. Combine the overall dimensions of the assembly site and the overall design drawing of the hull to determine the predetermined assembly position of the annular block to be assembled.

[0099] If, at the predetermined assembly position, the distance between the butting joints of the segments in the annular block to be assembled and the dock wall of the assembly site is greater than 1 m, then hoist the corresponding bottom segment 1 to the predetermined assembly position in the assembly site.

[0100] If, at the predetermined assembly position, the distance between the butting joints of the segments in the annular block to be assembled and the dock wall of the assembly site is less than or equal to 1 m, then hoist the corresponding bottom segment 1 to other positions in the assembly site, and ensure that, at the other positions, the distance between the butting joints of the segments in the annular block to be assembled and the dock wall of the assembly site is greater than 1 m.

[0101] S5-2. Place the bottom segment 1 horizontally.

[0102] S5-3. Establish a temporary coordinate system with the bottom center line 11 as the X-axis, the bottom rib inspection line 13 as the Y-axis, and the vertical direction as the Z-axis.

[0103] By performing step S5-1, before assembling each segment, judge the size of the assembly site to avoid a narrow assembly site, so as to facilitate the assembly and measurement of each segment.

[0104] Further, the specific steps of step S5-2 include:

[0105] Set up a laser theodolite to perform horizontal measurement on multiple points on the top surface of the bottom segment 1.

[0106] Adjust the levelness of the bottom segment 1 so that the levelness does not exceed 8 mm.

[0107] By controlling the levelness of the bottom segment 1, ensure the accuracy of assembling with other segments, so as to guarantee the accuracy of the overall ship assembly construction.

[0108] Further, the specific steps of step S6 include:

[0109] The specific steps of step S6 include:

[0110] S6-1. Hoist the transverse bulkhead segment 3 onto the bottom segment 1.

[0111] S6-2. Set up a total station on the bottom segment 1, use the total station to measure the transverse bulkhead center line 31 and the bottom center line 11, and adjust the transverse bulkhead segment 3 according to the measurement results so that the transverse bulkhead center line 31 and the bottom center line 11 are continuous and located in the XOZ plane of the temporary coordinate system.

[0112] S6-3. Use a total station to measure the transverse bulkhead rib inspection line 33, and adjust the transverse bulkhead section 3 according to the measurement results so that the transverse bulkhead rib inspection line 33 is located in the YOZ plane of the temporary coordinate system;

[0113] S6-4. Combine and connect the mating joints of the transverse bulkhead section 3 and the bottom section 1.

[0114] By measuring the transverse bulkhead center line 31, the bottom center line 11, and the transverse bulkhead rib inspection line 33 with a total station, the alignment of the transverse bulkhead section 3 and the bottom section 1 is specifically achieved, and then combined and connected to realize the general assembly of the transverse bulkhead section 3 and the bottom section 1.

[0115] Further, the specific steps of step S7 include:

[0116] The specific steps of step S7 include:

[0117] S7-1. Lift and install the side shell section 2 onto the bottom section 1;

[0118] S7-2. Set up a total station on the bottom section 1, use the total station to measure the side shell rib inspection line 23 and the bottom rib inspection line 13, and adjust the side shell section 2 according to the measurement results so that the side shell rib inspection line 23 and the bottom rib inspection line 13 are continuous and located in the YOZ plane of the temporary coordinate system;

[0119] S7-3. Use the total station to measure the side shell longitudinal section line 22, and adjust the side shell section 2 according to the measurement results so that the side shell longitudinal section line 22 is parallel to the XOZ plane of the temporary coordinate system;

[0120] S7-4. Use the total station to measure the side shell waterline 21 so that the level error between the side shell waterline 21 and the bottom section 1 does not exceed 5 mm;

[0121] S7-5. Combine and connect the mating joints of the side shell section 2 and the bottom section 1.

[0122] By measuring the side shell rib inspection line 23, the bottom rib inspection line 13, the side shell longitudinal section line 22, and the side shell waterline 21 with a total station, the alignment of the side shell section 2 and the bottom section 1 is specifically achieved, and then combined and connected to realize the general assembly of the side shell section 2 and the bottom section 1.

[0123] Further, step S4 also includes step S4-1;

[0124] Step S4-1. Mark multiple first mating joint alignment lines 14 on the bottom section corresponding to the positions of each mating joint;

[0125] On the side section 2, a plurality of second joint alignment lines 24 are correspondingly marked according to the positions of the respective joint openings;

[0126] On the transverse bulkhead section 3, a plurality of third joint alignment lines 34 are correspondingly marked according to the positions of the respective joint openings.

[0127] By passing through the first joint alignment line 14, the second joint alignment line 24, and the third joint alignment line 24, a measuring instrument is combined to further improve the docking accuracy of the joint opening.

[0128] Furthermore, the specific steps of step S1 include:

[0129] S1-1. According to the overall hull design drawing, select a position with a smaller hull half-width, and set the joint opening of the annular sub-assembly at the position with a smaller hull half-width, so that the hull is divided into a plurality of annular sub-assemblies;

[0130] S1-2. Then divide each annular sub-assembly into a bottom section 1, a side section 2, and a transverse bulkhead section 3.

[0131] So that the width of the position where the joint opening needs to be docked is smaller, and there is a certain distance from the edge of the sub-assembly site, which is convenient for various construction and measurement work.

[0132] Furthermore, the specific steps of the said step S1 include:

[0133] S1-1. According to the overall hull design drawing and in combination with the structure and dimensions of the sub-assembly site, set the joint opening of the annular sub-assembly in the area of the sub-assembly site where sub-assembly construction can be carried out, so that the hull is divided into a plurality of annular sub-assemblies;

[0134] S1-2. Then divide each annular sub-assembly into a bottom section 1, a side section 2, and a transverse bulkhead section 3.

[0135] So that it is ensured that the position for docking the joint opening has a position where sub-assembly construction can be carried out in the sub-assembly site, so as to ensure that normal construction work can be carried out.

[0136] In summary, the embodiment of the present invention provides a method for assembling a ship annular sub-assembly, which draws the corresponding hull center line, hull longitudinal section line, hull rib inspection line, and hull water line in the overall design drawing of the hull according to the actual segmentation situation of the hull; and based on this in turn, corresponding markings are drawn on the built bottom section 1, side section 2, and transverse bulkhead section 3;

[0137] A temporary coordinate system is established by horizontally setting the bottom center line 11 and the bottom rib inspection line 13 in the bottom segment 1 in the overall assembly site and combining the vertical direction. By adjusting the transverse bulkhead segment 3, the bottom center line 11 and the transverse bulkhead center line 31 are made continuous and located in the XOZ plane of the temporary coordinate system, and the transverse bulkhead rib inspection line 33 is located in the YOZ plane of the temporary coordinate system to determine the relative positions of the transverse bulkhead segment 3 and the bottom segment 1, thereby replacing the butt joint measurement step in the overall assembly process of the bottom segment 1 and the transverse bulkhead segment 3. The butt joints of the transverse bulkhead segment 3 and the bottom segment 1 are combined and connected to achieve the overall assembly of the bottom segment 1 and the transverse bulkhead segment 3.

[0138] By adjusting the side shell segment 2, the bottom rib inspection line 13 and the side shell rib inspection line 23 are made continuous and located in the YOZ plane of the temporary coordinate system, and the side shell longitudinal section line 22 is parallel to the XOZ plane of the temporary coordinate system to determine the relative positions of the side shell segment 2 and the bottom segment 1, thereby replacing the butt joint measurement step in the overall assembly process of the bottom segment 1 and the side shell segment 2. The butt joints of the side shell segment 2 and the bottom segment 1 are combined and connected to achieve the overall assembly of the bottom segment 1 and the side shell segment 2.

[0139] Thus, the connection and combination among the bottom segment 1, the side shell segment 2, and the transverse bulkhead segment 3 in the annular sub-assembly are achieved. Further, each annular sub-assembly is overall assembled to obtain a complete hull. By using the bottom center line 11, the bottom rib inspection line 13, the side shell longitudinal section line 22, the side shell rib inspection line 23, the transverse bulkhead center line 31, and the transverse bulkhead rib inspection line 33 for alignment and adjustment to replace the measurement of butt joint data in the prior art to achieve the alignment and docking of the butt joints, the problem of poor alignment accuracy caused by the narrow overall assembly site where it is impossible to arrange butt joint data measuring instruments is avoided, thereby ensuring the accuracy of the overall assembly, and further ensuring the structural strength, watertightness, and overall accuracy of the hull.

[0140] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A method for assembling a ship's annular subassembly, characterized in that, It includes the following steps: S1. Divide the hull into multiple annular sub-assemblies, and then divide each annular sub-assembly into bottom segments, side shell segments and transverse bulkhead segments; S2. Build the said bottom segments, side shell segments and transverse bulkhead segments respectively at the building jig positions; S3. In the overall design drawing of the hull, establish a reference coordinate system with the length direction of the hull as the X-axis, the width direction of the hull as the Y-axis, and the width direction of the hull as the Z-axis; Draw the hull center line, the longitudinal section line of the hull, the rib inspection line of the hull and the water line of the hull respectively in the said reference coordinate system; The number of the rib inspection lines of the hull is the same as that of the annular sub-assemblies, and the rib inspection lines of the hull are arranged in one-to-one correspondence with the transverse bulkhead segments; in the vertical direction, at least part of the projection of the rib inspection line of the hull overlaps with the midline of the transverse bulkhead segment in the ship length direction; at least one longitudinal section line of the hull penetrates through the side shell segment; S4. Mark the bottom center line, the longitudinal section line of the bottom and the rib inspection line of the bottom on the built bottom segments respectively according to the hull center line, the longitudinal section line of the hull, the rib inspection line of the hull and the water line of the hull; mark the side shell water line, the longitudinal section line of the side shell and the rib inspection line of the side shell on the built side shell segments; mark the transverse bulkhead center line, the longitudinal section line of the transverse bulkhead and the rib inspection line of the transverse bulkhead on the built transverse bulkhead segments; S5. Lift the bottom segments to the assembling site and place the bottom segments horizontally; Establish a temporary coordinate system with the said bottom center line as the X-axis, the rib inspection line of the bottom as the Y-axis and the vertical direction as the Z-axis; S6. Lift the transverse bulkhead segments onto the said bottom segments, adjust the transverse bulkhead segments to make the bottom center line and the transverse bulkhead center line continuous and located in the XOZ plane of the temporary coordinate system, and the rib inspection line of the transverse bulkhead is located in the YOZ plane of the temporary coordinate system, and perform combined connection on the mating joints of the transverse bulkhead segments and the bottom segments; S7. Lift the side shell segments onto the said bottom segments, adjust the side shell segments to make the rib inspection line of the bottom and the rib inspection line of the side shell continuous and located in the YOZ plane of the temporary coordinate system, and the longitudinal section line of the side shell is parallel to the XOZ plane of the temporary coordinate system, and perform combined connection on the mating joints of the side shell segments and the bottom segments; S8. Assemble the completed annular sub-assemblies; 2. The method for overall assembly of a ship's annular subassembly as claimed in claim 1, wherein The specific steps of step S3 include: S3-1. In the overall design drawing of the hull, establish a reference coordinate system with the midpoint of the ship stern in the ship width direction as the origin, the length direction of the hull as the X-axis, the width direction of the hull as the Y-axis, and the width direction of the hull as the Z-axis; S3-2. Draw the hull center line in the XOZ plane of the said reference coordinate system; S3-3. Draw the longitudinal section line of the hull in a plane parallel to the XOZ plane of the said reference coordinate system, and make at least one longitudinal section line of the hull penetrate through the side shell segment; S3-4. Draw the rib inspection line of the hull in a plane parallel to the YOZ plane of the said reference coordinate system, and make at least part of the projection of the rib inspection line of the hull overlap with the midline of the transverse bulkhead segment in the ship length direction in the vertical direction; S3-5. Draw the water line of the hull in a plane parallel to the YOZ plane of the said reference coordinate system.

3. The method for overall assembly of a ship's annular subassembly according to claim 1, characterized in that, The specific steps of step S4 include: S4-1. Draw the bottom center line according to the hull center line so that the bottom center line overlaps with the hull center line; draw the bottom longitudinal section line according to the hull longitudinal section line so that the bottom longitudinal section line overlaps with the hull longitudinal section line; draw the bottom rib inspection line according to the corresponding hull rib inspection line so that the bottom rib inspection line overlaps with the corresponding hull rib inspection line. S4-2. Draw the side longitudinal section line according to the hull longitudinal section line passing through the side so that the side longitudinal section line overlaps with the corresponding hull longitudinal section line; draw the side rib inspection line according to the corresponding hull rib inspection line so that the side rib inspection line overlaps with the corresponding hull rib inspection line; draw the side water line according to the hull water line so that the side water line overlaps with the hull water line. S4-3. Draw the transverse bulkhead center line according to the hull center line so that the transverse bulkhead center line overlaps with the hull center line; draw the transverse bulkhead rib inspection line according to the corresponding hull rib inspection line so that the transverse bulkhead rib inspection line overlaps with the corresponding hull rib inspection line; draw the transverse bulkhead longitudinal section line according to the hull longitudinal section line so that the transverse bulkhead longitudinal section line overlaps with the hull longitudinal section line.

4. The method for overall assembling of a ship's annular block as claimed in claim 1, wherein, The specific steps of step S5 include: S5-1. Combine the general assembly site size and the overall design drawing of the hull to judge the predetermined general assembly position of the annular sub-assembly to be generally assembled. If, in the predetermined general assembly position, the distance between the butting joint of each section in the annular sub-assembly to be generally assembled and the dock wall of the general assembly site is greater than 1 m, hoist the corresponding bottom section to the predetermined general assembly position in the general assembly site. If, in the predetermined general assembly position, the distance between the butting joint of each section in the annular sub-assembly to be generally assembled and the dock wall of the general assembly site is less than or equal to 1 m, hoist the corresponding bottom section to other positions in the general assembly site and make the distance between the butting joint of each section in the annular sub-assembly to be generally assembled and the dock wall of the general assembly site greater than 1 m in the other positions. S5-2. Place the bottom section horizontally. S5-3. Establish a temporary coordinate system with the bottom center line as the X-axis, the bottom rib inspection line as the Y-axis, and the vertical direction as the Z-axis.

5. The method for overall assembly of a ship's annular subassembly according to claim 4, wherein, The specific steps of placing the bottom section horizontally in step S5-2 include: Set up a laser theodolite to horizontally measure multiple points on the top surface of the bottom section. Adjust the levelness of the bottom section so that the levelness does not exceed 8 mm.

6. The method for overall assembling of a ship's annular subassembly as claimed in claim 1, wherein, The specific steps of step S6 include: S6-1. Hoist the transverse bulkhead section onto the bottom section. S6-2. Set up a total station on the bottom section, use the total station to measure the transverse bulkhead center line and the bottom center line, and adjust the transverse bulkhead section to make the transverse bulkhead center line and the bottom center line continuous and located in the XOZ plane of the temporary coordinate system according to the measurement results. S6-3. Use the total station to measure the transverse bulkhead rib inspection line, and adjust the transverse bulkhead section to make the transverse bulkhead rib inspection line located in the YOZ plane of the temporary coordinate system according to the measurement results. S6-4. Combine and connect the butting joints of the transverse bulkhead section and the bottom section.

7. The method for overall assembling of a ship's annular subassembly as claimed in claim 1, wherein The specific steps of step S7 include: S7-1. Hoist the side section onto the bottom section. S7-2. Set up a total station on the segmented bottom. Use the total station to measure the side rib inspection line and the bottom rib inspection line, and adjust the side segment to make the side rib inspection line and the bottom rib inspection line continuous and located in the YOZ plane of the temporary coordinate system according to the measurement results. S7-3. Use the total station to measure the side longitudinal section line, and adjust the side segment to make the side longitudinal section line parallel to the XOZ plane of the temporary coordinate system according to the measurement results. S7-4. Use the total station to measure the side waterline, so that the level error between the side waterline and the bottom segment does not exceed 5 mm. S7-5. Combine and connect the mating joints of the side segment and the bottom segment.

8. The ship ring block assembly method according to claim 1, characterized in that Step S4 further includes step S4-1. Step S4-1. Mark multiple first mating joint alignment lines on the bottom segment corresponding to the positions of the mating joints. Mark multiple second mating joint alignment lines on the side segment corresponding to the positions of the mating joints. Mark multiple third mating joint alignment lines on the transverse bulkhead segment corresponding to the positions of the mating joints.

9. The ship's ring block assembly method according to claim 1, characterized in that, The specific steps of step S1 include: S1-1. According to the overall hull design drawing, select a position with a smaller hull half-width, and set the mating joint of the annular sub-assembly at the position with a smaller hull half-width, so that the hull is divided into multiple annular sub-assemblies. S1-2. Then divide each annular sub-assembly into a bottom segment, a side segment, and a transverse bulkhead segment.

10. The method for overall assembly of a ship's annular subassembly as claimed in claim 1, wherein, The specific steps of step S1 include: S1-1. According to the overall hull design drawing and in combination with the structure and dimensions of the assembly site, set the mating joint of the annular sub-assembly in the area of the assembly site where assembly construction can be carried out, so that the hull is divided into multiple annular sub-assemblies. S1-2. Then divide each annular sub-assembly into a bottom segment, a side segment, and a transverse bulkhead segment.

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