Assembly method of inner bottom plate and transverse bulkhead of ship

Abstract

The present invention relates to an assembly method of an inner bottom plate and a transverse bulkhead of a ship, comprising the following steps: step S10, a first center line is drawn on the inner bottom plate of the ship along the length direction, and a plurality of adjustment pads are welded on the inner bottom plate toward both sides with the first center line as a reference; step S20, a second center line is arranged on the transverse bulkhead along the height direction, a second positioning line is arranged on the lower end face of the transverse bulkhead, and a plurality of guide frames are welded on the transverse bulkhead toward both sides with the second center line as a reference; step S30, a set number of transverse bulkheads are sequentially hoisted onto the inner bottom plate according to the demand, and each second positioning line is aligned with a first positioning line, and the first center line and the second center line are aligned; step S40, the transverse bulkhead is welded to the inner bottom plate; step S50, the stack cone is welded to the side of the adjustment pad away from the inner bottom plate. The same reference is used for positioning during the shipbuilding process, which reduces the manufacturing error and meets the requirements of the test box.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and in particular to an assembly method of an inner bottom plate and a transverse bulkhead of a ship. Background Art

[0002] After the construction of a container ship is completed, the cargo hold needs to be tested. During the test, the container is moved to the hatch by a crane. The guide frame on the transverse bulkhead can guide the container to guide the container to the stacking cone on the inner bottom plate, and the stacking cone is inserted into the fixing hole at the bottom of the container for fixing. At present, in the process of ship construction, the adjustment pad is arranged on both sides of the inner bottom plate based on the ground sample line of the dock, and the guide frame is also arranged on both sides of the transverse bulkhead based on the ground sample line in the dock, and then the transverse bulkhead and the inner bottom plate are assembled. The prior art has the following problems: Since the guide frame and the adjustment pad are arranged using different references, the tolerance between the welded guide frame and the adjustment pad is large, which makes it impossible to align the guide frame and the stacking cone, and then the ship cannot meet the test requirements. Summary of the invention

[0003] An object of an embodiment of the present invention is to provide a method for assembling an inner bottom plate and a transverse bulkhead of a ship, which has high assembly accuracy and can meet the requirements of a test box.

[0004] To achieve this purpose, the embodiment of the present invention adopts the following technical solutions:

[0005] In a first aspect, a method for assembling an inner bottom plate and a transverse bulkhead of a ship is provided, providing an adjustment pad, a guide frame and a stacking cone, comprising the following steps:

[0006] Step S10, providing an adjustment pad, a guide frame and a stack cone, drawing a first center line on the inner bottom plate of the ship along the length direction of the ship, drawing a plurality of first positioning lines on the inner bottom plate at intervals and vertically along the first center line, and welding a plurality of the adjustment pads on the inner bottom plate toward both sides with the first center line as a reference;

[0007] Step S20, drawing a second center line along the height direction on the transverse bulkhead, drawing a second positioning line on the lower end surface of the transverse bulkhead, and welding a plurality of guide frames on both sides of the transverse bulkhead with the second center line as a reference;

[0008] Step S30, hoisting a set number of the transverse bulkheads onto the inner bottom plate in sequence according to demand, and aligning each of the second positioning lines with one of the first positioning lines, and aligning the first center line with the second center line;

[0009] Step S40, welding the transverse bulkhead to the inner bottom plate;

[0010] Step S50: welding the stack cone to the side of the adjusting pad facing away from the inner bottom plate.

[0011] As a preferred embodiment of a method for assembling the inner bottom plate and the transverse bulkhead of a ship, step S31, a transverse bulkhead pre-installation process, is included between step S30 and step S40 to measure the verticality between the guide frame and the inner bottom plate, and control the verticality between the guide frame and the inner bottom plate to be within the range of (-5mm, +10mm).

[0012] As a preferred embodiment of a method for assembling the inner bottom plate and the transverse bulkhead of a ship, the guide frame has a first guide surface and a second guide surface which are vertically arranged. The distance L1 between the stack cone and the first guide surface is measured with the center of the stack cone as a reference, and the distance between the stack cone and the second guide surface is measured to be L2, and L1 is controlled to be 121 mm ± 5 mm, and L2 is controlled to be 100.5 mm ± 5 mm.

[0013] As a preferred embodiment of the method for assembling the inner bottom plate and the transverse bulkhead of a ship, the step S10 also includes a pre-installation process for the adjusting pad, wherein theoretical installation lines are first drawn on the inner bottom plate toward both sides with the first center line as a reference, and then the tolerance between two adjacent theoretical installation lines is corrected, and the adjusting pad is welded on the theoretical installation line.

[0014] As a preferred solution for the assembly method of the inner bottom plate and the transverse bulkhead of a ship, the two adjacent theoretical installation lines are controlled to be within the tolerance value range of (-1mm, +1mm).

[0015] As a preferred solution for the assembly method of the inner bottom plate and the transverse bulkhead of a ship, before welding the adjusting pad, the flatness of the adjusting pad is measured, and the flatness of the adjusting pad is controlled to be within a set flatness range.

[0016] As a preferred solution for the assembly method of the inner bottom plate and the transverse bulkhead of a ship, the flatness of the adjusting pad is measured by a meter measurement method.

[0017] As a preferred solution for a method of assembling an inner bottom plate and a transverse bulkhead of a ship, the flatness is controlled within a range less than or equal to 2 mm.

[0018] As a preferred solution of a method for assembling an inner bottom plate and a transverse bulkhead of a ship, the first positioning line is a rib positioning line on the inner bottom plate.

[0019] As a preferred solution for the assembly method of the inner bottom plate and the transverse bulkhead of a ship, the guide frames are provided on two opposite sides of the transverse bulkhead, and the guide frames on the two opposite sides of the transverse bulkhead are provided with reference to the same second center line.

[0020] The beneficial effects of the embodiment of the present invention are as follows: by marking a first center line on the inner bottom plate, welding the adjustment pad on the inner bottom plate toward both sides with the first center line as the reference, marking a second center line on the transverse bulkhead, welding the guide frame on the transverse bulkhead toward both sides with the second center line as the reference, hoisting the transverse bulkhead to the inner bottom plate and aligning the first center line with the second center line, and forming a center reference plane after the first center line and the second center line are aligned, that is, the adjustment pad and the guide frame are positioned with the same center reference plane, so that the guide frame and the adjustment pad form a data relationship, and there is no need to repeatedly adjust the position between the adjustment pad and the guide frame, thereby reducing manufacturing errors and improving assembly accuracy. After the transverse bulkhead is welded to the inner bottom plate, the stack cone can be corrected on the adjustment pad and the guide frame, and then the stack cone is welded on the adjustment pad so that the alignment accuracy between the stack cone and the guide frame is high. Therefore, during the test of the ship built by the above method, the container can be fixed by inserting the stack cone into the fixing hole of the container under the guidance of the guide frame, thereby meeting the requirements of the test container. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0022] Figure 1 The present invention is a process flow chart of a method for assembling an inner bottom plate and a transverse bulkhead of a ship according to an embodiment of the present invention.

[0023] Figure 2 A schematic diagram of a ship showing a method for assembling an inner bottom plate and a transverse bulkhead of a ship according to an embodiment of the present invention.

[0024] Figure 3 The present invention is a schematic diagram of the inner bottom plate segment structure of a method for assembling the inner bottom plate and transverse bulkhead of a ship according to an embodiment of the present invention.

[0025] Figure 4 A cross-sectional view of a ship showing a method for assembling an inner bottom plate and a transverse bulkhead of a ship according to an embodiment of the present invention.

[0026] Figure 5 for Figure 4 Cross-sectional view at AA.

[0027] Figure 6 for Figure 4 Cross-sectional view at BB.

[0028] In the figure:

[0029] 1. Inner bottom plate; 11. First center line; 12. First positioning line; 2. Transverse bulkhead; 21. Second center line; 3. Adjustment pad; 4. Guide frame; 41. First guide surface; 42. Second guide surface; 5. Stacking cone; 6. Box dividing part; 7. Installation position. DETAILED DESCRIPTION

[0030] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] like Figures 1 to 5 As shown, the assembly method of the inner bottom plate and the transverse bulkhead of a ship according to the embodiment of the present invention provides an adjustment pad 3, a guide frame 4 and a stacking cone 5, and includes the following steps:

[0034] Step S10, providing an adjustment pad 3, a guide frame 4 and a stacking cone 5, drawing a first center line 11 on the inner bottom plate 1 of the ship along the length direction of the ship, drawing a plurality of first positioning lines 12 on the inner bottom plate 1 at intervals and vertically along the first center line 11, and welding a plurality of adjustment pads 3 on the inner bottom plate 1 toward both sides with the first center line 11 as a reference;

[0035] Step S20, draw a second center line 21 on the transverse bulkhead 2 along the height direction, draw a second positioning line on the lower end surface of the transverse bulkhead 2, and weld a plurality of guide frames 4 on both sides of the transverse bulkhead 2 with the second center line 21 as a reference;

[0036] Step S30, hoisting a set number of transverse bulkheads 2 onto the inner bottom plate 1 in sequence according to the requirements, and aligning each second positioning line with a first positioning line 12, and aligning the first center line 11 with the second center line 21;

[0037] Step S40, welding the transverse bulkhead 2 to the inner bottom plate 1;

[0038] Step S50 , welding the stack cone 5 to the side of the adjusting pad 3 facing away from the inner bottom plate 1 .

[0039] In the assembly method of the inner bottom plate and the transverse bulkhead of the ship, a first center line 11 is provided on the inner bottom plate 1, an adjusting pad 3 is welded on the inner bottom plate 1 toward both sides with the first center line 11 as a reference, a second center line 21 is drawn on the transverse bulkhead 2, a guide frame 4 is welded on the transverse bulkhead 2 toward both sides with the second center line 21 as a reference, the transverse bulkhead 2 is hoisted onto the inner bottom plate 1 and the first center line 11 is aligned with the second center line 21, and a center reference plane is formed after the first center line 11 and the second center line 21 are aligned, that is, the adjusting pad 3 and the guide frame 4 are both positioned with the same center reference plane, so that the guide frame 4 forms a data relationship with the adjusting pad 3, and there is no need to repeatedly adjust the position between the adjusting pad 3 and the guide frame 4, thereby reducing manufacturing errors and improving assembly accuracy. After the transverse bulkhead 2 is welded to the inner bottom plate 1, the position of the stacking cone 5 on the adjusting pad 3 and the guide frame 4 can be corrected, and then the stacking cone 5 can be welded to the adjusting pad 3 to make the alignment accuracy between the stacking cone 5 and the guide frame 4 higher. Therefore, during the test of the ship built by the above method, the container can be fixed by inserting the stacking cone 5 into the fixing hole of the container under the guidance of the guide frame 4, thereby meeting the requirements of the test.

[0040] Specifically, the guide frame 4 includes a first guide plate and a second guide plate. The first guide plate is arranged on the side of the transverse bulkhead 2, and the side of the first guide plate facing away from the transverse bulkhead 2 is a first guide surface 41. The second guide plate is vertically arranged on the first guide plate, and the two side surfaces of the second guide plate along the ship width direction are second guide surfaces 42.

[0041] In one embodiment, a transverse bulkhead pre-installation process is included between step S30 and step S40: measuring the verticality between the guide frame 4 and the inner bottom plate 1, and controlling the verticality between the guide frame 4 and the inner bottom plate 1 to be within the range of (-5mm, +10mm). It can be understood that a plurality of transverse bulkheads 2 are arranged on the inner bottom plate 1 at intervals to form a plurality of cargo holds on the ship, and an installation position 7 for installing a container is formed between two adjacent guide frames 4 along the length direction of the ship, and between two adjacent guide frames 4 along the width direction of the ship, and the container is dropped into the installation position 7 by a crane. If the transverse bulkhead 2 is excessively tilted relative to the inner bottom plate 1 after being welded to the inner bottom plate 1, the spacing between two adjacent guide frames 4 along the length direction of the ship becomes smaller, so that the container cannot be hoisted into the installation position 7. Therefore, before the transverse bulkhead 2 is welded, it is necessary to measure the verticality between the guide frame 4 and the inner bottom plate 1, and control the verticality between the guide frame 4 and the inner bottom plate 1 to be within the range of (-5mm, +10mm), so as to meet the test container requirements.

[0042] Specifically, Figure 6 As shown, the distance L1 between the stack cone 5 and the first guide surface 41 is measured with the center of the stack cone 5 as the reference, and the distance L2 between the stack cone 5 and the second guide surface 42 is measured, and L1 is controlled to be 121 mm ± 5 mm, and L2 is controlled to be 100.5 mm ± 5 mm. By performing tolerance control in the transverse bulkhead pre-installation process, the positioning operation is refined and the quality of ship construction is improved.

[0043] Specifically, step S10 also includes a pre-installation process for adjusting the pad, first drawing theoretical installation lines on the inner bottom plate 1 with the first center line 11 as a reference toward both sides, then correcting the tolerance between two adjacent theoretical installation lines, and welding the adjusting pad 3 on the theoretical installation lines. It can be understood that when drawing the theoretical installation line on the inner bottom plate 1, if the installation theoretical line is drawn crooked or mistakenly, the installation theoretical line can be corrected to ensure that the theoretical installation line meets the installation requirements of the adjusting pad 3, and then the adjusting pad 3 is positioned by the theoretical installation line, so that each adjusting pad 3 can correspond to a installation theoretical line. This method avoids the situation where the adjusting pad 3 and the inner bottom plate 1 are directly welded and cannot be corrected, and the positioning is more accurate.

[0044] Specifically, the two adjacent theoretical installation lines are controlled within the tolerance value (-1mm, +1mm). The tolerance between the two adjacent theoretical installation lines is controlled within (0, ±1mm) to make the precision of the constructed ship higher. Avoid the adjustment pad 3 and the inner bottom plate 1 being directly welded and unable to be corrected.

[0045] In some embodiments, before welding the adjusting pad 3, the flatness of the adjusting pad 3 is measured, and the flatness of the adjusting pad 3 is controlled to be within a set flatness value to ensure that the stack cone 5 can be installed on the same plane to prevent the stack cone 5 from tilting after welding.

[0046] Furthermore, the flatness of the adjustment pad 3 is measured by the table method. Specifically, the adjustment pad 3 and the micrometer are placed on a standard flat plate, the standard flat plate is used as the measurement reference surface, and the micrometer is used to measure point by point or along several straight lines along the end face to be measured of the adjustment pad. The maximum moment measured by the micrometer on the entire end face to be measured is the flatness error of the end face to be measured. This measurement method is simple to operate and has high measurement efficiency.

[0047] Optionally, the flatness is controlled within a range of less than or equal to 2 mm. The flatness between all the adjustment pads 3 is controlled within a range of less than or equal to 8 mm.

[0048] Optionally, the first positioning line 12 is a rib position line on the inner bottom plate 1. During the shipbuilding process, in order to ensure that the inner bottom plate 1 has sufficient supporting force for the transverse bulkhead 2, a rib position plate is provided on the lower side of the inner bottom plate 1 to enhance the strength of the inner bottom plate 1, and the rib position line is drawn on the inner bottom plate 1 by calculating the stress condition of the rib position plate, so that a cross center line is formed by the intersection of the rib position line and the first center line 11, so as to position the transverse bulkhead 2 through the cross center line.

[0049] Optionally, guide frames 4 are provided on opposite sides of the transverse bulkhead 2, and the guide frames 4 on opposite sides of the transverse bulkhead 2 are arranged based on the same second center line 21 to further improve the installation accuracy of the cargo hold habitat in the whole ship. The cargo hold habitat includes the above-mentioned adjustment pad 3, guide frame 4, support box and box dividing member 6.

[0050] In the description of this article, it is necessary to understand that the terms "upper", "lower", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In the description of this specification, the description of reference term "an embodiment" etc. means that the specific features, structures, materials or characteristics of the embodiment are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment.

[0052] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0053] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A method for assembling the inner bottom plate and transverse bulkhead of a ship, characterized in that: The steps include: Step S10, providing an adjustment pad, a guide frame and a stack cone, drawing a first center line on the inner bottom plate of the ship along the length direction of the ship, drawing a plurality of first positioning lines on the inner bottom plate at intervals and vertically along the first center line, and welding a plurality of the adjustment pads on the inner bottom plate toward both sides with the first center line as a reference; Step S20, drawing a second center line along the height direction on the transverse bulkhead, drawing a second positioning line on the lower end surface of the transverse bulkhead, and welding a plurality of guide frames on both sides of the transverse bulkhead with the second center line as a reference; Step S30, hoisting a set number of the transverse bulkheads onto the inner bottom plate in sequence according to demand, and aligning each of the second positioning lines with one of the first positioning lines, and aligning the first center line with the second center line; Step S40, welding the transverse bulkhead to the inner bottom plate; Step S50: welding the stack cone to the side of the adjusting pad facing away from the inner bottom plate.

2. The method for assembling the inner bottom plate and transverse bulkhead of a ship according to claim 1, characterized in that: Step S31, a transverse bulkhead pre-installation process, is included between step S30 and step S40 to measure the verticality between the guide frame and the inner bottom plate, and control the verticality between the guide frame and the inner bottom plate to be within the range of (-5mm, +10mm).

3. The method for assembling the inner bottom plate and transverse bulkhead of a ship according to claim 2, characterized in that: The guide frame has a first guide surface and a second guide surface which are vertically arranged. The distance L1 between the stack cone and the first guide surface is measured with the center of the stack cone as a reference, and the distance between the stack cone and the second guide surface is measured to be L2, and L1 is controlled to be 121 mm ± 5 mm, and L2 is controlled to be 100.5 mm ± 5 mm.

4. The method for assembling the inner bottom plate and transverse bulkhead of a ship according to claim 1, characterized in that: The step S10 also includes a pre-installation process for the adjustment pad, in which theoretical installation lines are first drawn on both sides of the inner bottom plate with the first center line as a reference, and then the tolerance between two adjacent theoretical installation lines is corrected. The adjustment pad is positioned according to the theoretical installation line so that each adjustment pad can correspond to a theoretical installation line, and the adjustment pad is welded on the theoretical installation line.

5. The method for assembling the inner bottom plate and transverse bulkhead of a ship according to claim 4, characterized in that: The two adjacent theoretical installation lines are controlled to be within the tolerance value (-1mm, +1mm).

6. The method for assembling the inner bottom plate and transverse bulkhead of a ship according to any one of claims 1 to 5, characterized in that: Before welding the adjusting pad, the flatness of the adjusting pad is measured, and the flatness of the adjusting pad is controlled to be within a set flatness range.

7. The method for assembling the inner bottom plate and transverse bulkhead of a ship according to claim 6, characterized in that: The flatness of the adjusting pad is measured by using a meter measurement method.

8. The method for assembling the inner bottom plate and transverse bulkhead of a ship according to claim 7, characterized in that: The flatness is controlled within a range less than or equal to 2 mm.

9. The method for assembling the inner bottom plate and transverse bulkhead of a ship according to any one of claims 1 to 5, characterized in that: The first positioning line is a rib positioning line on the inner bottom plate.

10. The method for assembling the inner bottom plate and transverse bulkhead of a ship according to any one of claims 1 to 5, characterized in that: The guide frames are disposed on two opposite sides of the transverse bulkhead, and the guide frames on two opposite sides of the transverse bulkhead are disposed based on the same second center line.

Images