Method for testing installation angle of sidelight at block stage of ship

Abstract

The invention relates to the technical field of side lamp installation, and particularly discloses a side lamp installation angle testing method for a ship block stage, and the method comprises the steps: determining a block positioning center line and a side lamp installation position of a ship block; a heading datum line of the sidelight is kept parallel to the block positioning center line, a light-emitting assembly capable of emitting colored light beams is installed at the position of the sidelight, and the emitting path or the extension line of the emitting path of the colored light beams falls into the range that the heading light-emitting intensity of the sidelight needs to be weakened to be in a practical light breaking state; acquiring and judging whether an included angle between the block positioning center line and the emergent path or an included angle between the block positioning center line and an extension line of the emergent path is within a preset deflection angle range; fixing the sidelight or marking the installation position of the sidelight; and the block positioning center line is kept parallel to the midship line, the ship block is subjected to docking carrying, and the construction difficulty is reduced.

Description

Technical Field

[0001] This invention relates to the field of sidelight installation technology, and more particularly to a method for testing the sidelight installation angle at the ship section stage. Background Technology

[0002] Sidelights are red lights mounted on the port side of the highest deck of a ship and filter lights on the starboard side, each displaying continuous light within a horizontal arc of 112.5 degrees. The arrangement must ensure that the horizontal light arc of the sidelights is visible within a 112.5-degree angle, from directly forward to 22.5 degrees aft of the beam. However, the interpretation of sidelight visibility has been updated. The new interpretation requires that the sidelights be visible from the sea surface at a distance of 1000 meters from the bow. This new interpretation has affected the sidelight arrangement of many ship types. Due to factors such as ship length, hull type, and forecastle height, the installation position of sidelights on many ships has had to be moved from the traditional stern section to the bow section. The overall luminous intensity of the sidelights must be maintained 1 degree beyond the specified light arc in the forward direction (1-degree forward beam arc), with the actual light cutoff between 1 and 3 degrees.

[0003] In related technologies, some ship types are usually inspected for installation position using tugboats or drones. However, this inspection method is expensive and can only be tested at night. In addition, the positioning tests by tugboats or drones are fuzzy positioning with low accuracy, so they are both economical and practical.

[0004] In response to the above situation, some ship types install feedback fixtures forward of the bow section during the mooring phase to facilitate the installation and angle testing of the bow lights. However, for some ship types where it is not easy to install feedback fixtures at the bow, such as cruise ships, huge feedback fixtures need to be installed and need to extend outwards from the ship, which makes construction difficult, risky, and costly. Summary of the Invention

[0005] The purpose of this invention is to provide a method for testing the installation angle of sidelights in the ship section stage, so as to solve the problems in the related technology that the required size of the feedback tooling for installation at the bow of ships such as cruise ships is large, and it needs to extend outwards from the ship, which makes construction difficult, operation risky and tooling operation cost high.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This invention provides a method for testing the installation angle of sidelights at the ship assembly stage, the method comprising:

[0008] Determine the centerline of the ship's main section and the installation location of the sidelights;

[0009] Keep the bow reference line of the sidelight parallel to the positioning center line of the main section, install the light-emitting component capable of emitting a colored light beam at the position of the sidelight, and make the emission path of the colored light beam or the extension line of the emission path fall within the range where the light intensity of the sidelight in the bow direction should be reduced to a point where the light is effectively cut off.

[0010] Obtain and determine whether the angle between the positioning center line of the main section and the launch path or the angle between the positioning center line of the main section and the extension line of the launch path is within a preset deflection angle range. If the angle is within the preset deflection angle range, then determine that the installation angle of the portlight is qualified.

[0011] Fix the sidelights or mark the installation positions of the sidelights;

[0012] Keeping the center line of the main section parallel to the midship line, the main section of the ship is loaded onto the dock.

[0013] In one embodiment, determining the centerline of the ship's main section positioning includes:

[0014] Select a first reference point and a second reference point that are set opposite to each other at the bow of the ship's main section, and obtain the midpoint of the line connecting the first reference point and the second reference point as the first midpoint;

[0015] Select a third reference point and a fourth reference point that are set opposite to each other at the stern of the ship's main section, and obtain the midpoint of the line connecting the third reference point and the fourth reference point as the second midpoint;

[0016] The position of the overall segment positioning center line is determined by the line connecting the first midpoint and the second midpoint.

[0017] In one embodiment, determining the mounting location of the sidelights includes:

[0018] The positioning center line of the main section is projected vertically onto the main deck and denoted as the positioning projection center line of the main section.

[0019] Based on the overall section positioning projection center line, determine the left and right position lines and the front and rear position lines of the sidelights;

[0020] The intersection of the port light's left and right position lines and the port light's front and rear position lines is selected as the port light's installation position.

[0021] In one embodiment, a light-emitting component capable of emitting a colored light beam is installed at the portlight location, including:

[0022] After selecting the intersection of the port and starboard position lines and the fore and aft position lines of the port and starboard lights as the port and starboard light installation positions, the height reference target is erected on the main deck, with the height reference target located at the intersection of the port and starboard position lines and the fore and aft position lines of the port and starboard lights, and the light-emitting components are installed in reverse.

[0023] In one embodiment, the method for testing the sidelight installation angle at the ship section stage further includes:

[0024] After the ship section is loaded onto the dock, verify whether the positioning center line of the section, the midship line, and the bow reference line of the sidelight are parallel.

[0025] In one embodiment, ensuring that the exit path of the colored light beam or the extension of the exit path falls within the range where the luminous intensity of the porthole lamp in the bow direction should be reduced to a point where it is effectively cut off includes:

[0026] The colored light beam is emitted bowwards, such that its path falls within the range where the bowward luminous intensity of the sidelight should be reduced to a point of near-complete extinguishing; or,

[0027] The colored light beam is emitted towards the stern so that the extension of the emission path of the colored light beam falls within the range where the luminous intensity of the porthole lamp in the bow direction should be reduced to a point where the light is effectively cut off.

[0028] In one embodiment, the process of unloading the ship section into the dry dock includes:

[0029] During the docking and assembly phase, the assembly accuracy deviation is less than 5 millimeters.

[0030] In one embodiment, obtaining and determining whether the angle between the overall segment positioning center line and the emission path, or the angle between the overall segment positioning center line and the extension line of the emission path, is within a preset deflection angle range includes:

[0031] Select two standard points on the center line of the total section positioning, and obtain the coordinates of the two standard points using a total station;

[0032] Select two points along the launch path or its extension, and obtain the coordinates of the two points using the total station;

[0033] Based on the coordinates of the two standard points and the coordinates of the two transit points, the angle between the total section positioning center line and the launch path is calculated using the total station, or the angle between the total section positioning center line and the extension line of the launch path is calculated.

[0034] In one embodiment, obtaining the coordinates of the two transit points using the total station includes:

[0035] Place a projection plate at the bow or stern direction of the side light, and the projection plate is placed along a direction perpendicular to the total section positioning center line.

[0036] Select the exit point of the colored light beam and the landing point of the colored light beam on the projection plate as the two passing points.

[0037] Obtain the coordinates of the exit point of the colored light beam and the landing point of the colored light beam on the projection plate through the total station instrument.

[0038] In one embodiment, in determining the position of the total section positioning center line of the ship's total section, the ship's total section includes multiple segments, each segment has a segment positioning center line, the multiple segment positioning center lines are arranged at intervals in the vertical direction, and the multiple segment positioning center lines are all kept parallel to the total section positioning center line.

[0039] The beneficial effects of the present invention are as follows:

[0040] The present invention provides a method for testing the installation angle of side lights in the ship's total section stage. This method for testing the installation angle of side lights in the ship's total section stage can position the position and angle of the side lights in the ship's total section stage. When the ship is in the total section stage in the construction factory, there is a wide space for the installation of the light-emitting components and the detection of the exit path of the colored light beam, and the operation is convenient. By judging that the included angle between the total section positioning center line and the exit path or the included angle between the total section positioning center line and the extension line of the exit path is within the preset deviation angle range, it can be determined that the installation angle of the side light is qualified. The side light can be directly fixed in the total section stage or only the installation position and angle of the side light can be marked, and then the side light can be directly installed at the marked position and angle in the subsequent docking and mooring stages. This reduces the tooling operation cost of the side light installation operation in the mooring stage and the influence of the bow of different ship types on the side light installation operation, improves the operation safety, and reduces the construction difficulty. Description of the Drawings

[0041] Figure 1 It is a schematic diagram of the beam distribution of the right side light in the embodiment of the present invention;

[0042] Figure 2 It is a schematic diagram of the method for testing the installation angle of side lights in the ship's total section stage in the embodiment of the present invention;

[0043] Figure 3 It is a schematic diagram of the ship's total section stage in the embodiment of the present invention;

[0044] Figure 4 For Figure 3 An enlarged view at the position of the right side light in

[0045] Figure 5This is a schematic diagram of the docking and mounting stage of the ship's main sections in an embodiment of the present invention;

[0046] Figure 6 This is a schematic diagram showing the positions of the left position line, right position line, and fore and aft position line of the sidelight in an embodiment of the present invention;

[0047] Figure 7 This is a schematic diagram showing the position of the center line of the overall segment positioning projection in an embodiment of the present invention;

[0048] Figure 8 This is a cross-sectional schematic diagram of the light-emitting component in an embodiment of the present invention;

[0049] Figure 9 This is a schematic diagram showing the positions of the laser pointer and the fixing component in an embodiment of the present invention.

[0050] In the picture:

[0051] 1. Sidelights;

[0052] 2. Light-emitting component; 21. Laser pointer; 22. Fixing component; 221. Clamping tube; 222. Base;

[0053] 3. Projection board;

[0054] L1, Main section positioning centerline; L2, Bow reference line for sidelights; L3, Midships line;

[0055] L4, Launch path; L5, Overall section positioning projection centerline; L6, Portal position line of the sidelights;

[0056] L7, Starboard position line for sidelights; L8, Fore and aft position lines for sidelights;

[0057] A1, First reference point; A2, Second reference point; A3, Location of the sidelight installation; A4, Standard point; A5, Passing point. Detailed Implementation

[0058] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0059] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0060] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0062] To facilitate understanding, a brief explanation of each stage of ship construction is provided here:

[0063] Sectioning Stage: A section is an intermediate product in the shipbuilding process. It consists of sections formed by rationally dividing the hull according to its structural characteristics and construction process requirements. Sections can be planar, curved, or three-dimensional, and they are intermediate products that make up the entire hull. During the sectioning stage, components and parts are assembled to form the local structure of the hull.

[0064] Modular Construction Stage: In this stage, the various parts of the ship, namely sections or modules, are assembled into a complete hull. Modular construction is a method of building a ship using modules as the assembly units for the hull. This method reduces slipway work and welding deformation, and increases the pre-outfitting level within the modules. The manufacturing integrity of the modules plays a crucial role in subsequent assembly, installation, and commissioning.

[0065] Dock launching phase: This is a landmark milestone in the shipbuilding process, signifying that the ship's hull sections will begin to be rapidly assembled, accelerating the overall shipbuilding process. Dock launching is the process of moving the hull from the construction area into the water, typically using methods such as gravity launching, floating launching, and mechanized launching.

[0066] Mooring Phase: Mooring refers to the use of mooring lines to secure a vessel to offshore facilities, docks, berths, or other vessels. A mooring system is an integrated system that considers the role of each component, involving the installation and verification of key components to ensure the safe mooring of the vessel.

[0067] like Figures 1 to 4 As shown, this embodiment of the invention provides a method for testing the installation angle of sidelights at the ship assembly stage. The method specifically includes the following steps:

[0068] S100. Determine the center line L1 of the ship section and the installation position A3 of the sidelights. The center line L1 refers to the longitudinal center line of the ship section along the bow and stern, and can be selected according to the shape of the ship section. The sidelight 1 is installed on the highest deck of the ship section. The specific installation position of the sidelight 1 on the highest deck can be preset according to the shape of different ship sections or usage needs, and is not limited here. This invention mainly tests the installation angle of the sidelight 1.

[0069] S200. Keep the bow reference line L2 of the sidelight parallel to the positioning center line L1 of the main section, install the light-emitting component 2 that can emit colored light beams at the sidelight installation position A3, and make the emission path L4 of the colored light beam or the extension line of the emission path L4 fall into the range where the light intensity of the sidelight in the bow direction should be reduced to the point of complete light cut-off.

[0070] in, Figure 1 The diagram illustrates the relative positional relationship between the distribution range of the colored beam of the starboard lamp and its propagation direction (both bow and starboard) when the starboard lamp is properly installed. To the left of the specified light arc of the starboard lamp, the shaded area indicates the range where the luminous intensity of lamp 1 should be reduced to a point of near-complete extinguishing in the bow direction. The installation orientation of the luminous component 2 must satisfy the following condition: if the luminous intensity of the colored beam exit path L4 or its extension is located to the left of the specified light arc of the starboard lamp, it should be reduced to a point of near-complete extinguishing; or if it is located to the right of the specified light arc of the port lamp, its luminous intensity should be reduced to a point of near-complete extinguishing.

[0071] S300. Obtain and determine whether the angle between the positioning center line L1 of the main section and the launch path L4 or the angle between the extension line of the positioning center line L1 of the main section and the launch path L4 is within the preset deflection angle range. If the angle is within the preset deflection angle range, determine that the installation angle of the sidelight 1 is qualified.

[0072] If the installation angle of the sidelight 1 is qualified, the zero-degree arc edge line of the specified light arc of the sidelight 1 is parallel to the bow reference line L2 of the sidelight, that is, the zero-degree arc edge line is parallel to the overall positioning center line L1, and the emission path L4 of the colored light beam or the extension line of the emission path L4 can move synchronously with the sidelight 1. The position of the emission path L4 or the extension line of the emission path L4 should be detected and examined to determine whether the installation position of the sidelight 1 is qualified.

[0073] Specifically, during the ship section stage, the zero-degree arc edge line of the sidelight 1 is determined to be parallel to the section positioning center line L1 by checking whether the angle between the colored beam emission path L4 and the section positioning center line L1, or the angle between the extension of the colored beam emission path L4 and the section positioning center line L1, is within the range of 1°-3°. Thus, by detecting the angle between the colored beam emission path L4 and the section positioning center line L1, or the angle between the extension of the colored beam emission path L4 and the section positioning center line L1, the position of the emission path L4 is checked to determine whether it is qualified, thereby determining whether the installation angle of the light-emitting component 2 is qualified. If the angle between the colored beam's exit path L4 and the overall section positioning center line L1, or the angle between the extension of the colored beam's exit path L4 and the overall section positioning center line L1, is not within the range of 1°-3°, it indicates that the installation angle of the port light 1 is unqualified. It is necessary to select a lamp for fine adjustment, remeasure the colored beam's exit path L4 or its extension, and recalculate the angle between the colored beam's exit path L4 and the overall section positioning center line L1, or the angle between the extension of the colored beam's exit path L4 and the overall section positioning center line L1, until the angle meets the preset deflection angle range.

[0074] S400. Fix the sidelight 1 or mark the sidelight installation position A3. The sidelight 1 can be fixed in the assembly stage, or the sidelight installation position A3 can be marked in the assembly stage and installed in the docking or mooring stage to reduce damage or displacement and improve the accuracy of the sidelight 1 installation.

[0075] S500. Keep the center line L1 of the main section parallel to the midship line L3 and load the main section into the dock. The midship line L3 is the centerline of the ship. Keeping the center line L1 of the main section parallel to the midship line L3 and loading the main section into the dock can ensure the structural symmetry and balance of the ship, and also ensure that the lights of the sidelights 1 are kept at the correct angle and position after the ship is loaded.

[0076] With this configuration, this embodiment can locate the position and angle of the portlight 1 during the ship assembly stage. During the ship assembly stage, within the shipyard, there is ample space for the installation of the light-emitting component 2 and the detection of the colored beam emission path L4, making operation convenient. By determining that the angle between the assembly positioning center line L1 and the emission path L4, or the angle between the assembly positioning center line L1 and the extension of the emission path L4, is within a preset deflection angle range, the installation angle of the portlight 1 can be determined to be qualified. The portlight 1 can be directly fixed during the assembly stage, or only... Mark the installation position A3 and angle of the sidelights, for example, by marking angle lines or marking holes. The sidelights 1 can then be installed directly at the marked position and angle during the subsequent docking or mooring phases. This reduces the tooling costs of installing sidelights 1 during the mooring phase and the impact of different ship types on the installation of sidelights 1, improves operational safety, reduces construction difficulty, and solves the problems in related technologies where the tooling required for installation on the bow of ships such as cruise ships is large in size and needs to extend outside the ship, resulting in high construction difficulty, high operational risk, and high tooling costs.

[0077] In this embodiment, during the segment and overall construction stages, it is ensured that the bow reference line L2 of the sidelight is parallel to the positioning center line L1 of the segment or overall section. When the overall section is assembled on the actual ship, it is ensured that the positioning center line L1 of the overall section is parallel to the midship line L3 of the actual ship. This ensures that the bow reference line L2 of the sidelight is parallel to the midship line L3 of the actual ship. Before testing, it is confirmed that the sidelight 1 has a built-in light shield, ensuring that the luminous range of the sidelight 1 is 112.5 degrees. The luminous component 2 can be installed on the sidelight cover to ensure the installation of the luminous component 2 and the direction of the colored beam. The sidelight positioning only requires ensuring the relative parallelism between the bow reference line L2 and the midship line L3, and then fine-tuning to meet the requirements of visibility within 0°-1° and light cut-off within 1°-3°.

[0078] like Figures 8 to 9 As shown, optionally, the light-emitting component 2 may include a laser pointer 21 and a fixing member 22. The laser pointer 21 may be mounted on the fixing member 22. The design of the light-emitting component 2 needs to ensure that the angle at which the laser pointer 21 is installed is consistent with the front of the side lamp 1. The front of the side lamp 1 is the bow direction. After the laser pointer 21 is installed, it can emit a colored beam along the zero-degree arc edge of the side lamp 1. The fixing member 22 may include a clamp tube 221 and a base 222 that are fixedly or rotatably connected. The axis of the clamp tube 221 is in the same direction as the axis of the laser pointer 21. Optionally, the clamp tube 221 and the laser pointer 21 may be coaxially set or maintain a preset installation angle. The base 222 can be detachably connected to the side lamp 1. The clamp tube 221 and the base 222 may be connected by bolts. The clamp tube 221 may be, but is not limited to, a steel pipe or a copper pipe, and the base 222 may be, but is not limited to, a wooden board or a plastic board.

[0079] like Figures 3 to 5As shown, in some embodiments, in step S100, determining the center line L1 of the ship section positioning specifically includes the following steps:

[0080] S110. Select a first reference point A1 and a second reference point A2 set opposite to each other at the bow position of the ship section, and obtain the midpoint of the line connecting the first reference point A1 and the second reference point A2 as the first midpoint.

[0081] S120. Select a third reference point and a fourth reference point that are set opposite to each other at the stern of the ship's main section, and obtain the midpoint of the line connecting the third reference point and the fourth reference point as the second midpoint.

[0082] S130. Determine the position of the overall segment positioning center line L1 based on the line connecting the first midpoint and the second midpoint.

[0083] With this setup, the ship is designed with a symmetrical structure for navigation. By selecting the midpoint of the line connecting the first reference point A1 and the second reference point A2 at the bow of the ship's main section, and selecting the midpoint of the line connecting the third reference point and the fourth reference point at the stern of the ship's main section, the positioning center line L1 of the main section can be formed by connecting the two midpoints. Moreover, the reference points are selected at the bow and stern positions respectively, and the distance between them is large, which can ensure the accuracy of the operation of selecting the positioning center line L1 of the main section.

[0084] In this embodiment, the first reference point A1, the second reference point A2, the third reference point and the fourth reference point are all on the same horizontal plane to ensure the uniformity of the vertical height position of each point on the overall positioning center line L1.

[0085] like Figures 6 to 7 As shown, in some embodiments, determining the portlight mounting position A3 in step 100 further includes:

[0086] S140. Project the overall section positioning center line L1 vertically onto the main deck, and denote it as the overall section positioning projection center line L5. The main deck can be symmetrical about the overall section positioning projection center line L5.

[0087] S150. Based on the overall section positioning projection centerline L5, determine the port light left position line L6, the port light right position line L7, and the port light fore and aft position line L8.

[0088] S160. Select the intersection of the port light left position line L6, the port light right position line L7, and the port light fore-and-aft position line L8 as the port light installation position A3.

[0089] Using the main deck section positioning projection centerline L5 as the center, and based on the shape of the main deck, a preset lateral distance for the sidelight installation is selected. The main deck section positioning projection centerline L5 is then shifted left or right by this preset lateral distance to obtain the port position line L6 and the starboard position line L7 for the sidelight. The port position line L6 and the starboard position line L7 are symmetrical about the main deck section positioning projection centerline L5. Based on the shape of the main deck, the fore and aft reference lines of the bow of the main deck are selected as the fore and aft position lines L8 for the sidelight. The fore and aft position lines L8 intersect with the port position line L6, and the fore and aft position lines L8 intersect with the starboard position line L7. This intersection point can be used as the sidelight installation position A3, ensuring that the sidelight 1 is effectively visible to other vessels and preventing damage due to its proximity to the ship's side.

[0090] Specifically, the distance of the sidelight 1 from the hull side can be less than or equal to 10% of the ship's beam, and should be less than or equal to 2 meters at most, to ensure that the sidelight 1 can be effectively seen by other ships, while avoiding damage or impairment of its visibility due to its installation position being too close to the ship's side. For ships with a length exceeding twenty meters, the height of the sidelight 1 above the hull should not exceed three-quarters of the height of the foremast light, but should not be so low as to be interfered with by deck lights, to ensure the visibility of the sidelight 1 at night or in low visibility conditions, while avoiding confusion with other lights on the deck. The fore and aft reference lines of the main deck bow can be the line perpendicular to the center line L5 of the overall section positioning projection at the corner transition position between the bow's curved profile and the side profile line. This line can serve as the fore and aft reference angle line to establish the fore and aft position lines L8 of the sidelight. For example, the line perpendicular to the center line L5 of the overall section positioning projection, where the center position of the FR384 outer plating is located, can be used as the fore and aft reference lines, where 384 represents the curvature of the outer plating. During assembly, the overall section positioning centerline L1 can be used as the port and starboard control reference for the bow assembly, and the fore and aft position lines of the sidelights L8 can be used as the fore and aft control reference for the bow, facilitating effective control of assembly accuracy. Specifically, the reference point for selecting the overall section positioning projection centerline L5 at the bow is the midpoint of the bow bulwark, and the reference point at the stern is the midpoint of the line connecting the two corners between the stern's curved profile and the side profile line. The greater distance ensures the accuracy of the overall section positioning projection centerline L5.

[0091] like Figures 3 to 7 As shown, in some embodiments, in step S200, the light-emitting component 2 capable of emitting a colored light beam is installed at the port lamp mounting position A3, including the following steps:

[0092] S210. After selecting the intersection of the port light left position line L6, the port light right position line L7, and the port light fore-and-aft position line L8 as the port light installation position A3 in step S160, the height reference target is erected on the main deck, and the height reference target is located at the intersection of the port light left position line L6, the port light right position line L7, and the port light fore-and-aft position line L8. The light-emitting component 2 is installed in reverse to ensure the vertical installation accuracy of the light-emitting component 2, the accuracy of the emission path L4 or the extension of the emission path L4 as the edge line of the zero-degree light arc, and the parallelism of the emission path L4 or the extension of the emission path L4 with the overall section positioning center line L1.

[0093] like Figures 3 to 7 As shown, in some embodiments, the method for testing the installation angle of sidelights at the ship section stage further includes:

[0094] After the ship section is loaded onto the dock in step S500, verify whether the positioning center line L1, the midship line L3, and the bow reference line L2 of the sidelight are parallel. This verifies whether the angle between the emission path L4 of the light-emitting component 2 and the positioning projection center line L5 of the ship section, or the angle between the extension of the emission path L4 and the positioning projection center line L5 of the ship section, is within the preset deflection angle range. If the positioning center line L1, the midship line L3, and the bow reference line L2 of the sidelight are parallel, then keep the installation position A3 and angle of the sidelight unchanged. If there is a slight deviation between the parallelism of the positioning center line L1, the midship line L3, and the bow reference line L2 of the sidelight, then fine-tune the angle of the sidelight 1.

[0095] In this embodiment, the positions of the main section positioning center line L1, the midship line L3, and the bow reference line L2 of the sidelights can be detected using a total station. For example, multiple points can be selected on the main section positioning center line L1, the midship line L3, and the bow reference line L2 of the sidelights, with at least two points on each line, to determine the corresponding line positions. The coordinates of the multiple points can be recorded, and the parallelism of the three lines can be verified based on their coordinates.

[0096] In some embodiments, the method for testing the installation angle of sidelights at the ship section stage further includes:

[0097] Before projecting the main deck positioning center line L1 onto the main deck in step S140, the ship's main sections are leveled, for example, the main deck is leveled, to ensure the accuracy of the position of the main section positioning projection center line L5.

[0098] like Figures 3 to 7 As shown, in some embodiments, in step S500, during the docking stage, the loading accuracy deviation is less than 5 mm, so as to maintain the parallelism of the overall section positioning center line L1, the midship line L3, and the bow reference line L2 of the sidelight.

[0099] like Figures 3 to 7 As shown, in some embodiments, step S200, making the exit path L4 of the colored light beam or the extension of the exit path L4 fall within the range where the luminous intensity of the port light 1 in the bow direction should be reduced to a point where the light is effectively cut off, specifically includes the following steps:

[0100] S220, direct the colored beam of light bowwards so that the exit path L4 of the colored beam falls within the range where the luminous intensity of the porthole lamp 1 in the bowward direction should be reduced to a level that effectively cuts off the light; or,

[0101] S230. The colored beam is emitted towards the stern, so that the extension of the emission path L4 of the colored beam falls into the bow direction and the luminous intensity of the porthole lamp 1 is reduced to the range where the light is effectively cut off.

[0102] In step S220, the emitter of the light-emitting component 2 can emit light in the bow direction. The colored light beam is emitted in the bow direction, and the emission path L4 of the colored light beam falls into the range where the light intensity of the port light 1 in the bow direction should be reduced to the point of complete light cutoff. It can be directly determined whether the angle between the emission path L4 of the colored light beam and the positioning center line L1 of the main section is within the preset deflection angle range to determine whether the zero-degree light arc edge line of the port light 1 is parallel to the positioning center line L1 of the main section. Thus, it can be determined whether the position of the emission path L4 is qualified, and the installation angle of the light-emitting component 2 is qualified. This emission method can be used in situations where the bow of the ship is open or the projection plate 3 is easy to install, such as when the emission path L4 of the colored light beam is being tested.

[0103] In step S230, the emitter of the light-emitting component 2 can emit light towards the stern, and the colored beam is emitted towards the stern. The extension of the emission path L4 of the colored beam falls into the range where the luminous intensity of the port light 1 in the bow direction should be reduced to a point where the light is effectively cut off. It can be determined whether the angle between the extension of the emission path L4 of the colored beam and the positioning center line L1 of the main section is within the preset deflection angle range to determine whether the zero-degree light arc edge line of the port light 1 is parallel to the positioning center line L1 of the main section. Thus, it can be determined whether the position of the extension of the emission path L4 is qualified, and thus determine whether the installation angle of the light-emitting component 2 is qualified. This emission method can be used when it is difficult to install the emission path L4 detection tool of the colored beam at the bow of the ship. It can take advantage of the fact that there are few ship parts and the field of vision is open in the main section stage, and the emission path L4 detection tool of the colored beam, such as the projection board 3, can be installed in the range between the bow and the stern. The installation is convenient and the installation position is stable.

[0104] like Figures 3 to 6 As shown, in some embodiments, in step S300, obtaining and determining whether the angle between the overall segment positioning center line L1 and the exit path L4, or the angle between the extension line of the overall segment positioning center line L1 and the exit path L4, is within a preset deflection angle range includes:

[0105] S310. Select two standard points A4 on the overall section positioning center line L1, and obtain the coordinates of the two standard points A4 using a total station;

[0106] S320. Select two transit points A5 on the exit path L4 or the extension of the exit path L4, and obtain the coordinates of the two transit points A5 using a total station.

[0107] S330. Based on the coordinates of two standard points A4 and two transit points A5, calculate the angle between the total section positioning center line L1 and the outgoing path L4 using a total station, or calculate the angle between the total section positioning center line L1 and the extension line of the outgoing path L4.

[0108] This setup utilizes the principle that two points determine a straight line. By obtaining the coordinates of two standard points A4 on the overall positioning center line L1 and the coordinates of two transit points A5 on the outgoing path L4 or its extension using a total station, the angle between the overall positioning center line L1 and the outgoing path L4 or its extension on the horizontal plane can be calculated using the total station's function of calculating the angle between two straight lines. This method is efficient and highly accurate.

[0109] In this embodiment, the distance between the two standard points A4 is greater than or equal to 10 meters to avoid the distance between the two standard points A4 being too small, which would result in insufficient representation accuracy of the overall segment positioning center line L1.

[0110] like Figures 3 to 6 As shown, in some embodiments, in step S320, the coordinates of the two waypoints A5 are obtained using a total station, including:

[0111] A projection board 3 is placed at the bow or stern of the sidelight 1, with the projection board 3 positioned perpendicular to the positioning center line L1 of the main section.

[0112] The emission point of the colored beam and the landing point of the colored beam on the projection plate 3 are selected as two path points A5. The emission point of the colored beam and the landing point of the colored beam on the projection plate 3 can determine the straight line where the colored beam is located. This straight line is equivalent to the extension line of the zero-degree light arc edge line of the port light 1.

[0113] The coordinates of the exit point of the colored beam and the landing point of the colored beam on the projection plate 3 are obtained by using a total station.

[0114] Specifically, referring to the figure, the port side light is located on the left side of the ship. The emission point of the colored beam of the light-emitting component 2 on the port side light is the first port path point A5, and the landing point of the colored beam on the port side projection plate 3 is the second port path point A5. The coordinates of the first port path point A5 and the second port path point A5 are obtained by using a total station to characterize the position of the emission path L4 of the colored beam on the left side. The included angle of the port side light is obtained by combining the coordinates of the first port path point A5 and the second port path point A5.

[0115] The starboard light is located on the right side of the ship. The emission point of the colored beam from the light-emitting component 2 on the starboard light is the first right-hand path point A5, and the landing point of the colored beam on the starboard projection plate 3 is the second right-hand path point A5. The coordinates of the first right-hand path point A5 and the second right-hand path point A5 are obtained by using a total station to ensure the position of the emission path L4 of the colored beam on the right side. The included angle of the starboard light is obtained by combining the coordinates of the first right-hand path point A5 and the second right-hand path point A5.

[0116] In this embodiment, the projection plate 3 can be set at the bow or stern of the sidelight 1. The main section stage can be fixed by tooling around the circumference of the main section or by relying on the hull of the main section, and the position is stable.

[0117] like Figures 6 to 7 As shown, in some embodiments, in step S100, when determining the position of the overall section positioning center line L1 of the ship section, the ship section includes multiple segments, each segment having a segment positioning center line. The multiple segment positioning center lines are arranged vertically at intervals, and all multiple segment positioning center lines are kept parallel to the overall section positioning center line L1. This ensures that the multiple segment positioning center lines are located in the same vertical plane, guarantees the accuracy of the segment assembly, and ensures the accuracy of the position of the overall section positioning center line L1 of the ship section.

[0118] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for testing the installation angle of sidelights at the ship section stage, characterized in that: include: Determine the centerline of the ship's section and the installation position of the sidelights; Keep the bow reference line of the sidelight parallel to the center line of the overall section positioning, install the light-emitting assembly capable of emitting colored light beams at the sidelight installation position, and make the emission path of the colored light beam or the extension line of the emission path fall within the range where the luminous intensity of the sidelight in the bow direction should be reduced to the point where the light is actually cut off; Obtaining and judging whether the included angle between the total section positioning center line and the emission path or the included angle between the total section positioning center line and the extended line of the emission path is within a preset deflection angle range, and judging that the installation angle of the sidelight is qualified if the included angle is within the preset deflection angle range; Fix the sidelights or mark the installation positions of the sidelights; The positioning center line of the total section is kept parallel to the midship line, and the ship total section is launched into the dock.

2. The method for testing the installation angle of sidelights at the ship section stage according to claim 1, characterized in that: Determine the centerline of the ship's block, including: Selecting a first reference point and a second reference point that are set opposite to each other on the left and right sides of the bow of the ship, and obtaining the midpoint of a line connecting the first reference point and the second reference point as a first midpoint; A third reference point and a fourth reference point are selected at the stern of the ship section and are arranged opposite to each other on the left and right sides, and a midpoint of a line connecting the third reference point and the fourth reference point is obtained as a second midpoint; The position of the total segment positioning centerline is determined based on a line connecting the first midpoint and the second midpoint.

3. The method for testing the installation angle of sidelights at the ship section stage according to claim 1, characterized in that: Determining the sidelight installation location includes: Project the center line of the overall section positioning vertically to the main deck, and record it as the overall section positioning projection center line; Based on the total section positioning projection center line, determine the sidelight left and right position line and the sidelight front and rear position line; The intersection of the left-right position line of the sidelight and the front-back position line of the sidelight is selected as the sidelight installation position.

4. The method for testing the installation angle of sidelights at the ship section stage according to claim 3 is characterized in that: A light-emitting component capable of emitting a colored light beam is installed at the sidelight position, including: After selecting the intersection of the left-right position line of the sidelight and the front-back position line of the sidelight as the sidelight installation position, erect a height reference target on the main deck, and the height reference target is located at the intersection of the left-right position line of the sidelight and the front-back position line of the sidelight, and install the light-emitting assembly in reverse.

5. The method for testing the installation angle of sidelights at the ship section stage according to claim 3 is characterized in that: The sidelight installation angle test method at the ship section stage also includes: After the ship section is launched into dock, it is verified whether the positioning center line of the section, the midship line and the bow reference line of the sidelight are parallel.

6. The method for testing the installation angle of sidelights at the ship section stage according to claim 1, characterized in that: The emission path of the colored light beam or the extension of the emission path falls within the range where the luminous intensity of the sidelight at the bow direction should be reduced to the point where the light is effectively cut off, including: The colored light beam is emitted toward the bow direction, so that the emission path of the colored light beam falls within the range where the luminous intensity of the sidelight in the bow direction should be reduced to a range where the light is actually cut off; or, The colored light beam is emitted toward the stern, so that the extension line of the emission path of the colored light beam falls within the range where the luminous intensity of the sidelight at the bow should be weakened to the point where the light is actually cut off.

7. The method for testing the installation angle of sidelights at the ship section stage according to claim 1, characterized in that: The process of launching the ship section into dock comprises: During the docking phase, the loading accuracy deviation is less than 5 mm.

8. The method for testing the installation angle of sidelights at the ship section stage according to claim 1, characterized in that: Obtaining and determining whether the angle between the total segment positioning center line and the exit path or the angle between the total segment positioning center line and the extension line of the exit path is within a preset deflection angle range includes: Select two standard points on the center line of the total segment positioning, and obtain the coordinates of the two standard points by a total station; Selecting two waypoints on the emission path or the extension line of the emission path, and obtaining the coordinates of the two waypoints by the total station; According to the coordinates of the two standard points and the coordinates of the two passing points, the angle between the total section positioning center line and the exit path or the angle between the total section positioning center line and the extension line of the exit path is calculated by the total station.

9. The method for testing the installation angle of sidelights at the ship section stage according to claim 8, characterized in that: Acquiring the coordinates of the two waypoints by the total station includes: A projection plate is placed at the bow or stern of the sidelight, and the projection plate is placed in a direction perpendicular to the positioning centerline of the overall section; Selecting the emission point of the colored light beam and the landing point of the colored light beam on the projection board as the two passing points; The coordinates of the emission point of the colored light beam and the landing point of the colored light beam on the projection board are obtained by the total station.

10. The method for testing the installation angle of sidelights at the ship section stage according to claim 1, characterized in that: In determining the position of the overall section positioning centerline of a ship overall section, the ship overall section includes a plurality of sections, each of the sections has a section positioning centerline, the plurality of section positioning centerlines are arranged vertically at intervals, and the plurality of section positioning centerlines are all kept parallel to the overall section positioning centerline.

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