A method for controlling the installation accuracy of convex deck tank saddles

Abstract

The present application provides a method for controlling the installation accuracy of a convex deck liquid tank saddle, comprising the steps of fabricating and installing the convex deck: setting a first positioning reference line and a second positioning reference line on the side top deck segment; setting a third positioning reference line and a fourth positioning reference line on the convex deck sloping plate segment; verifying the angle of the side top deck segment during construction of the side top deck segment; verifying the angle of the connection between the side top deck segment and the convex deck sloping plate segment in the transverse direction when the side top deck segment and the convex deck sloping plate segment are assembled and positioned; installing the saddle: during transverse positioning, the saddle is positioned with reference to the first positioning reference line and the third positioning reference line; during longitudinal positioning, the saddle is positioned with reference to the second positioning reference line and the fourth positioning reference line; and detecting the horizontality of the four corners of the saddle and the fore-stern opening distance of the saddle, so that the saddle is fixedly installed on the convex deck according to preset standards. This method ensures the installation accuracy of the saddle and the smooth seating of the deck tank, and is conducive to uniform force transmission.

Description

Technical Field

[0001] The present application relates to the technical field of convex deck liquid tank saddles, and in particular to a method for controlling the installation accuracy of convex deck liquid tank saddles. Background Art

[0002] Liquefied gas tankers will continue to evaporate during transportation. In order to avoid the danger of excessive pressure in the liquid tank and not waste the evaporated liquefied gas, a deck liquid tank is generally set up on the deck as a fuel tank and buffer tank to collect the evaporated liquefied gas and use it as power gas.

[0003] Convex decks are widely used on liquefied gas tankers because they not only reduce steel plate usage but also provide access to personnel on both port and starboard sides. Furthermore, the convex deck's beveled edges can be used to house various marine equipment. Convex deck structures typically consist of a main deck, a ramp, and a mid-deck structure, making it challenging to precisely control overall flatness, installation angles, and installation deformation. Deck tanks are typically mounted on the convex deck using saddles. To ensure the precise installation of deck tanks on the convex deck, the saddles must be precisely controlled.

[0004] However, ensuring the precise installation of the saddle requires not only accurate control of the saddle's own assembly accuracy but also accurate control of the overall assembly accuracy of the convex deck. Furthermore, the precise matching of the saddle and the convex deck is crucial. Currently, there is no mature installation process, which results in repeated adjustments when installing the saddle on the convex deck. Therefore, an effective method for controlling the precise installation of the saddle and the convex deck is urgently needed. Summary of the Invention

[0005] The purpose of the embodiment of the present application is to provide a method for controlling the installation accuracy of the convex deck liquid tank saddle, which effectively ensures the alignment of the saddle structure with the convex deck structure by setting a reference positioning line and designing an inspection card, and at the same time ensures the effective matching of the liquid tank laminated wood and the saddle structure, thereby ensuring the smooth seating and installation accuracy of the deck liquid tank, and facilitating the uniform transmission of force.

[0006] The present application provides a method for controlling the installation accuracy of a convex deck liquid tank saddle, comprising:

[0007] Fabricate and install the raised deck:

[0008] A first positioning reference line and a second positioning reference line are set on the side top deck section, so that the first positioning reference line is parallel to the transverse installation line of the saddle web at a first preset interval, and the second positioning reference line is parallel to the longitudinal installation line of the saddle web at a second preset interval;

[0009] A third positioning reference line and a fourth positioning reference line are set on the convex deck inclined plate segment, so that the third positioning reference line is parallel to the saddle web transverse installation line at a first preset interval, and the fourth positioning reference line is parallel to the saddle web longitudinal installation line at a second preset interval;

[0010] When the side top deck is constructed in sections, the angle of the connection between the side top deck sections should be checked;

[0011] After completion of each section, the flatness of the side top deck and the convex deck sloping plate shall be checked respectively;

[0012] When positioning the side top deck section and the convex deck sloping plate section as a whole, verify the angle of the connection between the side top deck section and the convex deck sloping plate section in the transverse direction; align the transverse installation line of the saddle web on the side top deck section with the transverse installation line of the saddle web on the convex deck sloping plate section in the longitudinal direction;

[0013] Install the saddle:

[0014] During transverse positioning, the saddle is positioned with reference to the first and third positioning reference lines, and the saddle web is aligned with the thickness of the ribs on the reverse side of the top side deck section and the ribs on the reverse side of the convex deck sloping plate section; during longitudinal positioning, the saddle is positioned with reference to the second and fourth positioning reference lines, and the saddle bracket is aligned with the thickness of the longitudinals on the reverse side of the top side deck section and the longitudinals on the reverse side of the convex deck sloping plate section;

[0015] Check the gap flatness between the saddle bracket and the side top deck and the convex deck sloping plate. If the gap flatness does not meet the preset requirements, adjust the gap flatness by correcting the toe height of the saddle bracket;

[0016] Check the horizontality of the four corners of the saddle and the distance between the bow and stern of the saddle to ensure that the saddle is fixedly installed on the convex deck according to the preset standards.

[0017] In one embodiment, the angle at the connection between the side top deck section and the convex deck sloping plate section includes:

[0018] A first inspection pallet is provided, and the first inspection pallet is used for inspection. The first inspection pallet is provided with positioning lines, wherein the positioning lines include a fifth positioning line provided at a first preset distance from a longitudinal on the back side of the top deck of the side, a sixth positioning line provided at a joint between the top deck section of the side and the convex deck sloping plate section, and a seventh positioning line provided at a second preset distance from a longitudinal on the back side of the convex deck sloping plate section;

[0019] During transverse positioning, the first inspection card is clamped at the joint of the side top deck section and the convex deck inclined plate section for verification, so that the fifth positioning line is aligned with the first positioning reference line, and the seventh positioning line is aligned with the third positioning reference line.

[0020] In one embodiment, the angle of the side top deck segment connection is verified to include:

[0021] A second inspection pallet is provided, which is provided with a supporting portion and a verification portion. The second inspection pallet is arranged at the connection between the sections of the top side deck, so that the first section of the top side deck is placed on the supporting portion, and the second section of the top side deck is connected with the verification portion and the first section of the top side deck.

[0022] In one embodiment, the step of longitudinally aligning the transverse installation line of the saddle web on the side top deck segment with the transverse installation line of the saddle web on the raised deck sloping plate segment comprises:

[0023] Measure the length distance of the transverse installation line of the saddle web in the bow and stern directions and the height distance in the height direction, so that the length distance and height distance deviation of the transverse installation line on the top deck section of the side and the transverse installation line on the convex deck inclined plate section are within the preset accuracy range.

[0024] In one embodiment, before said installing the saddle, the method includes:

[0025] Make the saddle:

[0026] Add a preset dispersed shrinkage compensation amount in the width direction of the saddle web;

[0027] Assemble the saddle web by panel assembly and inspect the main dimensions of the saddle web after assembly;

[0028] Weld the saddle web, inspect the main dimensions of the saddle web after welding, and set the bracket positioning line at a preset height above the lower edge of the saddle web;

[0029] Install the saddle bracket according to the bracket positioning line, make the saddle bracket perpendicular to the saddle web, and align the upper and lower edges of the saddle bracket with the upper and lower edges of the saddle web respectively. Set the toe height of the saddle bracket to 25mm;

[0030] The saddle bracket includes the stern bracket and the bow bracket, with the upper end of the stern bracket facing the center point of the deck tank and the lower end of the stern bracket aligned with the center line of the plate thickness of the longitudinal on the reverse side of the side top deck on the side top deck;

[0031] Then install the bow bracket and other saddle structures to verify that the main dimensions, width and height of the saddle meet the preset accuracy requirements.

[0032] In one embodiment, the reinstallation saddle further structure includes:

[0033] Install the saddle arc panel,

[0034] Install the saddle groove baffle onto the saddle arc panel, making the distance between the saddle groove baffle and the edge of the saddle arc panel 20mm, ensuring that the distance between the saddle groove baffle is 230mm, and the gap between the saddle groove baffle and the saddle arc panel is 0-2mm;

[0035] Install the laminated wood and fill it with epoxy resin so that the thickness of the epoxy resin filled between the laminated wood and the saddle arc panel is 10-25mm, and the gap between the saddle groove baffle and the laminated wood is 5-15mm;

[0036] Install the saddle anti-floating structure and add a 30mm margin at the bottom of the saddle anti-floating structure.

[0037] In one embodiment, the step of longitudinally aligning the transverse installation line of the saddle web on the side top deck segment with the transverse installation line of the saddle web on the raised deck sloping plate segment comprises:

[0038] In the longitudinal direction, align the first positioning reference line on the side top deck section with the third positioning reference line on the raised deck sloping plate section.

[0039] In one embodiment, the smoothness of the gap between the saddle bracket and the side top deck and the convex deck sloping plate includes that the gap between the saddle bracket and the side top deck and the convex deck sloping plate meets 0-2mm.

[0040] The method for controlling the installation accuracy of the convex deck tank saddle of the present application has the following beneficial effects:

[0041] 1. By setting the reference positioning line and designing the inspection plate, the alignment of the saddle structure and the convex deck structure is effectively ensured. At the same time, the tank laminate wood is effectively matched with the saddle structure, thereby ensuring the saddle installation accuracy and the smooth seating of the deck tank, which is conducive to uniform force transmission;

[0042] 2. Effectively control the manufacturing accuracy of the deck tank saddle, ensure the installation accuracy of the saddle web and bow and stern brackets, ensure the installation accuracy of the saddle arc panel and the saddle structure groove baffle, and further ensure the installation accuracy of the saddle;

[0043] 3. The manufacturing and installation method of the convex deck and saddle in the present invention can improve the manufacturing accuracy of the deck tank saddle structure and the manufacturing accuracy of the convex deck, and ensure the installation accuracy of the convex deck, saddle and deck tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0045] Figure 1 Schematic diagram of the structure of a convex deck tank saddle according to an embodiment of the present application;

[0046] Figure 2 Schematic diagram of the layout of a convex deck tank saddle according to an embodiment of the present application;

[0047] Figure 3 for Figure 1 A partial schematic diagram of a convex deck tank saddle in direction C is shown;

[0048] Figure 4 for Figure 1 A partial schematic diagram of a convex deck tank saddle in direction D is shown;

[0049] Figure 5 for Figure 1 A partial schematic diagram of a convex deck tank saddle in direction A is shown;

[0050] Figure 6 for Figure 1 Schematic diagram of the first inspection card board at position E in the middle;

[0051] Figure 7 for Figure 6 Schematic diagram of the second inspection card board at the middle H position;

[0052] Figure 8 for Figure 1 A partial schematic diagram of a convex deck tank at the position of saddle B is shown;

[0053] Figure 9 for Figure 1 A partial schematic diagram of a convex deck tank saddle in the direction F is shown;

[0054] Figure 10 for Figure 1 A partial schematic diagram of a convex deck tank at the position of the saddle G is shown;

[0055] Figure 11 for Figure 2 A top view of a convex deck tank saddle layout is shown.

[0056] 100. Convex deck; 110. Side top deck section; 111. Side top deck; 1111. First side top deck section; 1112. Second side top deck section; 112. Side top deck section reverse longitudinal; 113. Side top deck section reverse rib; 114. First positioning datum line; 115. Second positioning datum line; 120. Convex deck sloping plate section; 121. Convex deck sloping plate; 122. Convex deck sloping plate section reverse longitudinal; 123. Convex deck sloping plate section reverse rib; 124. Third positioning datum line; 125. Fourth positioning datum line Direction; 130, convex deck mid-span section; 200, saddle; 210, saddle web; 211, bracket positioning line; 220, saddle arc panel; 230, saddle bracket; 231, stern bracket; 232, bow bracket; 240, saddle groove baffle; 241, laminated wood; 250, saddle anti-floating structure; 300, deck liquid tank; 310, center of deck liquid tank; 400, first inspection pallet; 410, fifth positioning line; 420, sixth positioning line; 430, seventh positioning line; 500, second inspection pallet; 510, support part; 520, verification part. DETAILED DESCRIPTION

[0057] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0058] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0059] Figure 1 Schematic diagram of the structure of a convex deck tank saddle according to an embodiment of the present application. Figure 1 The saddle 200 is arranged on the convex deck 100, and the deck fluid tank 300 is arranged on the saddle 200. Figure 2 and Figure 11 The convex deck 100 is composed of a side top deck section 110, a convex deck sloping plate section 120, and a convex deck mid-span section 130. The saddles 200 are symmetrically arranged on the left and right sides of the ship, centered at the ship's longitudinal midsection. By controlling the installation accuracy of the saddles 200, the installation accuracy of the deck tank 300 on the saddles 200 is controlled. This method controls the installation accuracy of the convex deck tank saddle through the following steps, including:

[0060] Fabricate and install the convex deck 100:

[0061] See also Figure 3 , set a first positioning reference line 114 and a second positioning reference line 115 on the side top deck segment 110. The first positioning reference line 114 is set parallel to the saddle web transverse installation line at a first preset interval L2, which can be 100mm. The saddle web transverse installation line includes a rib 113 on the reverse side of the side top deck segment, which is used for transverse installation and positioning of the saddle web on the side top deck segment 110. The second positioning reference line 115 is set parallel to the saddle web longitudinal installation line at a second preset interval L1, which can be 100mm. The saddle web longitudinal installation line includes a longitudinal rib 112 on the reverse side of the side top deck segment, which is used for longitudinal installation and positioning of the saddle web on the side top deck segment 110;

[0062] See also Figure 4 A third positioning reference line 124 and a fourth positioning reference line 125 are set on the convex deck sloping plate segment 120, with the third positioning reference line 124 being parallel to the saddle web transverse installation line at a first preset distance L2. The saddle web transverse installation line includes ribs 123 on the reverse side of the convex deck sloping plate segment, and the saddle web is installed and positioned transversely on the convex deck sloping plate segment 120. The fourth positioning reference line 125 is parallel to the saddle web longitudinal installation line at a second preset distance L1. The saddle web longitudinal installation line includes longitudinal ribs 122 on the reverse side of the convex deck sloping plate segment, and is used for longitudinal installation and positioning of the saddle web on the convex deck sloping plate segment 120.

[0063] When constructing the side top deck section 110, verify the angle of the connection between the side top deck section 111;

[0064] After the completion of each section, the flatness of the side top deck 111 and the convex deck sloping plate 121 shall be checked respectively;

[0065] When the side top deck segment 110 and the convex deck sloping plate segment 120 are assembled and positioned, the angle at the connection between the side top deck segment 110 and the convex deck sloping plate segment 120 is checked in the transverse direction; and the transverse installation line of the saddle web 210 on the side top deck segment 110 is aligned with the transverse installation line of the saddle web 210 on the convex deck sloping plate segment 120 in the longitudinal direction.

[0066] Installing the Saddle 200:

[0067] During transverse positioning, the saddle 200 is positioned with reference to the first positioning reference line 114 and the third positioning reference line 124, and the saddle web 210 is aligned with the thickness of the side top deck section reverse rib 113 and the convex deck sloping plate section reverse rib 123; during longitudinal positioning, the saddle 200 is positioned with reference to the second positioning reference line 115 and the fourth positioning reference line 125, and the saddle bracket 230 is aligned with the thickness of the side top deck section reverse longitudinal 112 and the convex deck sloping plate section reverse longitudinal 122;

[0068] Check the smoothness of the gap between the saddle bracket 230 and the side top deck 111 and the convex deck sloping plate 121. If the smoothness does not meet the preset requirement (the preset requirement is a gap within the range of 0-2mm), adjust the smoothness by correcting the toe height of the saddle bracket 230. That is, the toe height H2 can be adjusted within the range of 10-25mm.

[0069] The horizontality of the four corners of the saddle 200 and the distance between the bow and stern of the saddle are detected, so that the saddle 200 is fixedly installed on the convex deck 100 according to the preset standards.

[0070] During the above implementation, the present invention, by setting a reference positioning line and controlling the construction angle of the convex deck, effectively ensures the alignment of the convex deck structure itself and the saddle structure with the convex deck structure. This also ensures that the tank laminate wood and the saddle structure are effectively matched, thereby ensuring that the deck tank can be smoothly seated and facilitating uniform force transmission. This effectively controls the installation accuracy of the deck tank saddle. This provides a feasible and effective method for controlling the installation accuracy of the convex deck tank saddle, effectively controlling the installation accuracy of the deck tank saddle, and further ensuring the safety of ship operations.

[0071] To further ensure the accuracy of fabrication and installation of the convex deck 100, in one embodiment, verifying the angle at the connection between the side top deck segment and the convex deck sloping plate segment includes:

[0072] Set up the first inspection card board 400, use the first inspection card board 400 to verify, see Figure 6The first inspection plate 400 is provided with positioning lines. These include a fifth positioning line 410 at a first preset distance L3 from the longitudinal on the back of the side top deck; a sixth positioning line 420 at the joint between the side top deck section 110 and the convex deck sloping plate section 120; and a seventh positioning line 430 at a second preset distance L4 from the longitudinal on the back of the convex deck sloping plate section. During transverse positioning, the first inspection plate 400 is positioned at the joint between the side top deck section 110 and the convex deck sloping plate section 120 for verification, ensuring that the fifth positioning line 410 is aligned with the second positioning reference line 115, and the seventh positioning line 430 is aligned with the fourth positioning reference line 125. The first inspection plate ensures the installation angle accuracy at the joint between the side top deck section 110 and the convex deck sloping plate section 120, further ensuring the installation accuracy of the convex deck 100. The first preset distance L3 can be 100 mm, and the second preset distance L4 can also be 100 mm.

[0073] In one embodiment, the angles of the side top deck section connections tested include:

[0074] Set up the second test card board 500 to check the effectiveness, see Figure 7 The second inspection card 500 is provided with a support portion 510 and a verification portion 520. The second inspection card 500 is placed at the connection of the side top deck segment 110, so that the first side top deck segment 1111 is placed on the support portion 510, and the second side top deck segment 1112 is connected to the first side top deck segment 1111 in conjunction with the verification portion 520. The second inspection card 500 is provided to further ensure the connection accuracy of the side top deck segment. The connection accuracy of the side top deck segment and the connection accuracy between the side top deck segment and the convex deck inclined plate segment are both factors that the applicant has found to affect the installation accuracy of the saddle 200. This application controls the two connection accuracies by providing a verification card, paving the way for a precise saddle.

[0075] In one embodiment, longitudinally aligning the transverse installation line of the saddle web 210 on the side top deck segment 110 with the transverse installation line of the saddle web 210 on the raised deck sloping segment 120 includes:

[0076] Measure the transverse installation line of the saddle web 210 in the bow and stern directions and in the height direction, ensuring that the deviation between the transverse installation line on the side top deck section 110 and the transverse installation line on the convex deck sloping plate section 120 is within a preset accuracy range. In other words, placing the positioning line of the saddle web 210 forward as a reference line for installing the convex deck can avoid rework if the saddle installation accuracy does not meet the standard after the convex deck is assembled.

[0077] To further ensure the accuracy of the saddle, this application includes the following before installing the saddle:

[0078] Make Saddle 200:

[0079] Add a preset dispersed shrinkage compensation amount in the width direction of the saddle web 210;

[0080] Assemble the saddle web 210 by assembling the panels, and inspect the main dimensions of the saddle web 210 after assembly;

[0081] Weld the saddle web 210, inspect the main dimensions of the saddle web 210 after welding, and set a bracket positioning line 211 at a preset height H1 above the lower edge of the saddle web 210. The preset height H1 may be 50 mm.

[0082] Position and install the saddle bracket 230 according to the bracket positioning line 211, so that the saddle bracket 230 is perpendicular to the saddle web 210, and the upper and lower edges of the saddle bracket 230 are aligned with the upper and lower edges of the saddle web 210 respectively, and the toe height H2 of the saddle bracket 230 is set to 25 mm;

[0083] See also Figure 5 The saddle bracket 230 includes a stern bracket 231 and a bow bracket 232, with the upper end of the stern bracket 231 facing the center 310 of the deck tank, and the lower end of the stern bracket 231 aligned with the center line of the thickness of the longitudinal bone on the back of the deck at the top deck 111 (see Figure 8 ); the deck reverse longitudinals include the side top deck segment reverse longitudinals 112 and the convex deck sloping plate segment reverse longitudinals 122.

[0084] Then install the bow end bracket 232 and other structures of the saddle to verify that the main dimensions, width and height of the saddle meet the preset accuracy requirements.

[0085] During the above implementation process, the manufacturing accuracy of the saddle is further effectively controlled, the installation accuracy of the saddle web and the bow and stern end brackets is ensured, the installation accuracy of the saddle arc panel and the saddle structure groove baffle is ensured, and the alignment of the saddle structure and the convex deck structure is further ensured. The liquid tank laminated wood is effectively matched with the saddle structure, thereby ensuring the smooth seating of the deck liquid tank.

[0086] In one embodiment, installing the saddle further comprises:

[0087] See also Figure 1 , install the saddle arc panel 220, the saddle web 210 is at the center of the saddle arc panel 220, and the gap between the saddle web 210 and the saddle arc panel 220 meets the requirements;

[0088] Install the saddle groove baffle 240 onto the saddle arc panel 220 so that the edge distance between the saddle groove baffle 240 and the saddle arc panel 220 is 20 mm, ensuring that the distance between the saddle groove baffle 240 is 230 mm and the gap between the saddle groove baffle 240 and the saddle arc panel 220 is 0-2 mm.

[0089] See also Figure 9 , install the laminated wood 241, fill it with epoxy resin, make the thickness L5 of the epoxy resin filled between the laminated wood 241 and the saddle arc panel 220 be 10-25mm, and the gap L6 between the saddle groove baffle 240 and the laminated wood 241 be 5-15mm.

[0090] See also Figure 10 Install the saddle anti-floating structure 250, adding a 30mm margin at the bottom of the saddle anti-floating structure 250. Ensure a 5mm gap L7 between the deck tank 300 and the saddle anti-floating structure 250. By controlling the installation accuracy of the saddle arc panel, saddle groove baffle, laminated wood, and saddle anti-floating structure, the manufacturing accuracy of the deck tank saddle structure is further improved, ensuring the accuracy of the deck tank structure installation.

[0091] In one embodiment, longitudinally aligning the transverse installation line of the saddle web 210 on the side top deck segment 110 with the transverse installation line of the saddle web 210 on the raised deck sloping segment 120 includes:

[0092] The first positioning reference line 114 on the side top deck segment is aligned longitudinally with the third positioning reference line 124 on the convex deck sloping plate segment. That is, by using the reference line used for the saddle's transverse positioning for the convex deck's longitudinal positioning, the convex deck and the saddle are positioned with reference to the same reference, ensuring the saddle's accurate positioning on the convex deck.

[0093] In one embodiment, the smoothness of the gap between the saddle bracket 230 and the side top deck 111 and the convex deck sloping plate 121 includes a gap of 0-2 mm between the saddle bracket 230 and the side top deck 111 and the convex deck sloping plate 121. The smoothness of the deck installation is ensured by testing the gap between the saddle bracket and the two decks.

[0094] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A method for controlling the installation accuracy of a convex deck tank saddle, characterized in that: include: Fabricate and install the raised deck: A first positioning reference line and a second positioning reference line are set on the side top deck section, so that the first positioning reference line is parallel to the transverse installation line of the saddle web at a first preset interval, and the second positioning reference line is parallel to the longitudinal installation line of the saddle web at a second preset interval; A third positioning reference line and a fourth positioning reference line are set on the convex deck inclined plate segment, so that the third positioning reference line is parallel to the saddle web transverse installation line at a first preset interval, and the fourth positioning reference line is parallel to the saddle web longitudinal installation line at a second preset interval; When the side top deck is constructed in sections, the angle of the connection between the side top deck sections should be checked; After completion of each section, the flatness of the side top deck and the convex deck sloping plate shall be checked respectively; When positioning the side top deck section and the convex deck sloping plate section as a whole, verify the angle of the connection between the side top deck section and the convex deck sloping plate section in the transverse direction; align the transverse installation line of the saddle web on the side top deck section with the transverse installation line of the saddle web on the convex deck sloping plate section in the longitudinal direction; Install the saddle: During transverse positioning, the saddle is positioned with reference to the first and third positioning reference lines, and the saddle web is aligned with the thickness of the ribs on the reverse side of the top side deck block and the ribs on the reverse side of the convex deck sloping plate block; during longitudinal positioning, the saddle is positioned with reference to the second and fourth positioning reference lines, and the saddle bracket is aligned with the thickness of the longitudinals on the reverse side of the top side deck block and the longitudinals on the reverse side of the convex deck sloping plate block; Check the gap flatness between the saddle bracket and the side top deck and the convex deck sloping plate. If the gap flatness does not meet the preset requirements, adjust the gap flatness by correcting the toe height of the saddle bracket; Check the horizontality of the four corners of the saddle and the distance between the bow and stern of the saddle to ensure that the saddle is fixedly installed on the convex deck according to the preset standards.

2. The method for controlling the installation accuracy of the convex deck tank saddle according to claim 1, characterized in that: The angles at the connection between the side top deck section and the convex deck sloping plate section include: A first inspection pallet is provided, and the first inspection pallet is used for inspection. The first inspection pallet is provided with positioning lines, wherein the positioning lines include a fifth positioning line provided at a first preset distance from a longitudinal on the back side of the top deck of the side, a sixth positioning line provided at a joint between the top deck section of the side and the convex deck sloping plate section, and a seventh positioning line provided at a second preset distance from a longitudinal on the back side of the convex deck sloping plate section; During transverse positioning, the first inspection card is clamped at the joint of the side top deck section and the convex deck inclined plate section for verification, so that the fifth positioning line is aligned with the first positioning reference line, and the seventh positioning line is aligned with the third positioning reference line.

3. The method for controlling the installation accuracy of the convex deck tank saddle according to claim 1, characterized in that: The angles of the side top deck segment connection to be verified include: A second inspection pallet is provided, which is provided with a supporting portion and a verification portion. The second inspection pallet is arranged at the connection between the sections of the top side deck, so that the first section of the top side deck is placed on the supporting portion, and the second section of the top side deck is connected with the verification portion and the first section of the top side deck.

4. The method for controlling the installation accuracy of the convex deck tank saddle according to claim 1, characterized in that: The step of longitudinally aligning the transverse installation line of the saddle web on the side top deck section with the transverse installation line of the saddle web on the raised deck sloping plate section comprises: Measure the length distance of the transverse installation line of the saddle web in the bow and stern directions and the height distance in the height direction, so that the length distance and height distance deviation of the transverse installation line on the top deck section of the side and the transverse installation line on the convex deck inclined plate section are within the preset accuracy range.

5. The method for controlling the installation accuracy of the convex deck tank saddle according to claim 1, characterized in that: Before installing the saddle include: Make the saddle: Add a preset dispersed shrinkage compensation amount in the width direction of the saddle web; Assemble the saddle web by panel assembly and inspect the main dimensions of the saddle web after assembly; Weld the saddle web, inspect the main dimensions of the saddle web after welding, and set the bracket positioning line at a preset height above the lower edge of the saddle web; Install the saddle bracket according to the bracket positioning line, make the saddle bracket perpendicular to the saddle web, and align the upper and lower edges of the saddle bracket with the upper and lower edges of the saddle web respectively. Set the toe height of the saddle bracket to 25mm; The saddle bracket includes the stern bracket and the bow bracket, with the upper end of the stern bracket facing the center point of the deck tank and the lower end of the stern bracket aligned with the center line of the plate thickness of the longitudinal on the reverse side of the side top deck on the side top deck; Then install the bow bracket and other saddle structures to verify that the main dimensions, width and height of the saddle meet the preset accuracy requirements.

6. The method for controlling the installation accuracy of the convex deck tank saddle according to claim 5, characterized in that: The other structures of the reinstalled saddle include: Install the saddle arc panel, Install the saddle groove baffle onto the saddle arc panel, making the distance between the saddle groove baffle and the edge of the saddle arc panel 20mm, ensuring that the distance between the saddle groove baffle is 230mm, and the gap between the saddle groove baffle and the saddle arc panel is 0-2mm; Install the laminated wood and fill it with epoxy resin so that the thickness of the epoxy resin filled between the laminated wood and the saddle arc panel is 10-25mm, and the gap between the saddle groove baffle and the laminated wood is 5-15mm; Install the saddle anti-floating structure and add a 30mm margin at the bottom of the saddle anti-floating structure.

7. The method for controlling the installation accuracy of the convex deck tank saddle according to claim 1, characterized in that: The step of longitudinally aligning the transverse installation line of the saddle web on the side top deck section with the transverse installation line of the saddle web on the raised deck sloping plate section comprises: In the longitudinal direction, align the first positioning reference line on the side top deck section with the third positioning reference line on the raised deck sloping plate section.

8. The method for controlling the installation accuracy of the convex deck tank saddle according to claim 1, characterized in that: The flatness of the gap between the saddle bracket and the side top deck and the convex deck inclined plate includes the gap between the saddle bracket and the side top deck and the convex deck inclined plate meeting 0-2mm.

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