A ship member scribing rule and a scribing method thereof

Abstract

The application belongs to the ship member scribing ruler in the ship building technical field, and also relates to a scribing method of the ship member scribing ruler. A first positioning hole (A1) and a first limiting hole (A2) are arranged on the upper part of a first base plate assembly (A), a first positioning plate (A3) is arranged with a first plate positioning hole (A4) and a first positioning plate limiting hole (A5), the first positioning plate (A3) is arranged with a first arc-shaped positioning structure (A16) which is outward convex, a second positioning hole (B1) and a second limiting hole (B2) are arranged on the upper part of a second base plate assembly (B), a second positioning plate (B3) is arranged with a second plate positioning hole (B4) and a second positioning plate limiting hole (B5), and the second positioning plate (B3) is arranged with a second arc-shaped positioning structure (B16) which is outward convex. The ship member scribing ruler and the scribing method thereof can conveniently and quickly complete the positioning line scribing of the ship member, reduce the work load and the error, save a large amount of working time, and reduce the scribing operation strength.

Description

Technical Field

[0001] This invention belongs to the field of shipbuilding technology, and more specifically, it relates to a marking ruler for ship components. This invention also relates to a marking method for the marking ruler for ship components. Background Technology

[0002] Ship structure, also known as hull structure, refers to the collective term for the hull structure composed of plates and a frame. It mainly includes the bottom structure, side structure, deck structure, bulkhead structure, bow and stern structure, and superstructure. The structure varies depending on the purpose of the ship. A ship's structure should possess sufficient strength, stiffness, stability, and reliability under external forces. Therefore, based on the ship's main dimensions and function, hull frame structures are generally classified into three types: transverse frame, longitudinal frame, and mixed frame. Transverse frame: This type of hull frame has denser transverse skeletons and sparser longitudinal skeletons, resulting in better transverse strength. Longitudinal frame: Conversely, the longitudinal frame has denser longitudinal skeletons and sparser transverse skeletons, resulting in better longitudinal strength. It is generally suitable for large oil tankers and ore carriers. Mixed frame: This type of hull frame combines transverse and longitudinal frames, using part transverse frames (such as the side structure) and part longitudinal frames (such as the bottom and deck structure). This design is beneficial to the overall longitudinal strength of the hull and also makes the ship's components more rationally arranged. It is generally used in large and medium-sized oil tankers and cargo ships.

[0003] For liquid cargo ships or bulk carriers with longitudinal skeletal structures in the inner and outer shells, inner and outer bottoms, and decks, connecting members (profiles or flat steel, sometimes with crescent-shaped elbows at the ends to improve fatigue strength) are installed between the inner and outer bottom longitudinal ribs and the inner and outer shell longitudinal ribs, according to regulations, to improve the local strength of the double bottom ribs or side bulkheads. The modern shipbuilding industry uniformly adopts a deeply integrated concept of "hull, outfitting, and painting" and "design, production, and management." Shipbuilding production design, starting from the construction standpoint, addresses how to build ships and how to rationally organize shipbuilding production through design forms, considering high quality, high efficiency, short cycles, and ensuring safety. It is based on detailed design under the premise of the overall shipbuilding policy, and is drawn according to the specific conditions of the shipyard construction, according to the construction areas and units of the process stages. It includes working charts and production information documents that incorporate various process technical indicators, instructions, and various management data. Currently, except for some inland waterway shipbuilding enterprises, production design adapted to the different depths of their respective shipyards is widely implemented, achieving significant results. Production design has become an important means to improve shipbuilding efficiency and promote the progress of shipbuilding in my country. From the perspective of shipbuilding itself, the main hull is divided into three main stages: sectioning, overall assembly, and slipway assembly. Sectioning is further composed of processes such as parts cutting and processing, to sub-assembly, intermediate assembly, and final assembly (sectioning). In the sub-assembly drawing, for double-bottom structures using a longitudinal frame, the components (crescent elbow plates or stiffeners) connecting the inner and outer bottom longitudinal ribs on the transverse ribs need to be welded in the sub-assembly stage. The sub-assembly drawing of the ribs should indicate the positioning data of such components (crescent elbow plates or stiffeners). Due to the arc or angle of the inner and outer bottom plates, as well as the differences in the transverse and longitudinal arrangement of the inner and outer bottom longitudinal ribs, the components connecting the inner and outer bottom longitudinal ribs are skewed. Moreover, the ends of the components are in the dotted area of ​​the through holes of the inner and outer bottom longitudinal ribs on the ribs. Therefore, it is very inconvenient to indicate the positioning data of the welding position lines of such components in the sub-assembly drawing of the ribs. Since each engineer's understanding is different, the auxiliary lines are also set differently, which can easily lead to large deviations in component positioning due to measurement and scribing errors. Currently, the methods for marking the positioning dimensions of this type of component can be categorized as follows: 3.1. The positioning dimensions are obtained by extending or adding auxiliary lines through other intersecting structural lines. This method of marking and replicating positioning data on-site is cumbersome and has the lowest work efficiency. 3.2. The perpendicular distance between the intersection of the component's position line and the edge of the corresponding longitudinal bone's through hole and the straight edge of the through hole is used. When replicating this perpendicular distance on-site, the straight edge of the through hole needs to be extended inwards towards the component, and then a parallel line with the marked dimension is drawn towards one side of the component line. The intersection of this parallel line and the edge of the through hole is the positioning point of the component line. The other end of the component is obtained using the same method, and the straight line connecting the two intersection points is the positioning line of this type of component.On-site replication of this type of positioning data is quite troublesome, and the work efficiency is the same as in point 3.1; 3.3, directly marking the positioning dimensions of the end of the component (the side segment connection component is in an oblique or horizontal position) is even more difficult because the end of the component is inside the longitudinal girder through hole (usually called a virtual position), and it is impossible to accurately replicate the positioning line of the component on-site. When replicating this type of positioning data on-site, because the actual points cannot be marked, it is often judged by visual inspection, resulting in a large deviation; 3.4, when the end of the component positioning line is extended outward and there is a clearly identifiable intersection with the edge of the rib, the arc length or distance between the intersection and the identifiable feature point on the edge of the rib is directly marked. This dimension is more accurate, but it is not applicable to the case where there is no intersection, and can only be partially applied.

[0004] Although the four methods for marking positioning lines and dimensions for the above-mentioned sub-assembly components of ribs (or diaphragms) differ, all require marking positioning dimensions on the sub-assembly drawing. Before on-site fabrication of the sub-assembly, each dimension needs to be copied one by one according to the markings on the drawing. This process involves several conversion steps, and some methods provide positioning points that are merely virtual points, relying solely on visual judgment. Therefore, deviations in drawing component positioning lines are prone to occur, leading to rework during segmented assembly and welding. Some shipyards may leave a 100mm delay at the ends of these components during welding, and then bend and align them on-site based on the deviation between the component and the inner and outer bottom longitudinal ribs when the sub-assembly is hoisted for segmented assembly, increasing the workload of assembly and welding during segmented fabrication. According to on-site investigations, it is generally reported that the time spent copying component lines on ribs and diaphragms is longer than the component assembly time. Therefore, a simple and unified positioning standard is needed to improve the positioning accuracy and work efficiency of these components. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a ship component marking ruler that is simple in structure, can conveniently and quickly complete the marking of positioning lines for ship components, reduces workload and errors, can be completed by one person without the assistance of many people, has simple steps, can save a lot of working time, and reduces the intensity of marking operations.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] This invention relates to a marking ruler for ship components. The marking base plate includes a first base plate assembly and a second base plate assembly. The upper part of the first base plate assembly is a marking reference edge, and the upper part of the second base plate assembly is a marking reference edge. A first positioning hole and a first limiting hole are provided near the outer end of the upper part of the first base plate assembly. A first positioning plate positioning hole and a first positioning plate limiting hole are provided on the first positioning plate. A first arc-shaped positioning structure is provided on the first positioning plate. A second positioning hole and a first limiting hole are provided near the outer end of the upper part of the second base plate assembly. A second positioning plate positioning hole and a second positioning plate limiting hole are provided on the second positioning plate. A second arc-shaped positioning structure is provided on the second positioning plate. The first base plate assembly and the second base plate assembly are connected by a connecting structure.

[0008] The connection structure includes a first connection structure and a second connection structure. The first connection structure is as follows: a first upper protrusion and a first lower protrusion are provided on the upper part of the first substrate assembly near its inner end. The first upper protrusion and the first lower protrusion are connected to a first clamping plate. A first connection channel is provided between the first substrate assembly and the first clamping plate. The second substrate assembly moves through the first connection channel. The second connection structure is as follows: a second upper protrusion and a second lower protrusion are provided on the upper part of the second substrate assembly near its inner end. The second upper protrusion and the second lower protrusion are connected to a second clamping plate. A second connection channel is provided between the second substrate assembly and the second clamping plate. The first substrate assembly moves through the first connection channel.

[0009] The first substrate assembly has a first limiting protrusion near its inner end at the lower part, and the second substrate assembly has a second limiting protrusion near its inner end at the lower part.

[0010] The first upper protrusion and the first lower protrusion are respectively connected to the first clamping plate via a first bolt and nut assembly; the second upper protrusion and the second lower protrusion are respectively connected to the second clamping plate via a second bolt and nut assembly.

[0011] The ship component is provided with a first through groove on one side, which includes a groove portion, a through hole portion, a side portion and a straight edge portion. The ship component is provided with a second through groove on the other side, which includes a groove portion, a through hole portion, a side portion and a straight edge portion.

[0012] The first positioning plate has a first positioning hole in the upper part and a first positioning hole in the lower part, and a first positioning plate limiting hole in the lower part.

[0013] The second positioning plate has two positioning holes: an upper positioning hole and a lower positioning hole. The second positioning plate also has two limiting holes: an upper limiting hole and a lower limiting hole.

[0014] The first positioning hole of the first substrate assembly and the first fixed plate positioning hole of the first positioning plate are connected by a first rotating shaft; the second positioning hole of the second substrate assembly and the second fixed plate positioning hole of the second positioning plate are connected by a second rotating shaft.

[0015] The first positioning plate is provided with a first adjustment handle near its outer end, and the second positioning plate is provided with a second adjustment handle near its outer end.

[0016] This invention also relates to a simple method for marking positioning lines on ship components, which can quickly and easily complete the marking process, reduce workload and errors, and can be completed by one person without the need for multiple assistants. The method saves a significant amount of time and reduces the intensity of the marking operation. The marking steps of the method are as follows:

[0017] S1: The first base plate assembly and the second base plate assembly are connected by a connecting structure to form a ship component scribing ruler. The ship component scribing ruler is brought close to the ship component, and the first positioning plate on the first base plate assembly is brought close to the first through groove, and the second positioning plate on the second base plate assembly is brought close to the second through groove.

[0018] S2: Based on the deflection position of the ship component, the operator rotates the first positioning plate to adjust its direction relative to the first base plate assembly, so that the first arc-shaped positioning structure of the first positioning plate is embedded in the groove of the first through slot, thereby achieving the positioning of the first positioning plate on the ship component; the operator rotates the second positioning plate to adjust its direction relative to the second base plate assembly, so that the second arc-shaped positioning structure of the second positioning plate is embedded in the groove of the second through slot, thereby achieving the positioning of the second positioning plate on the ship component;

[0019] S3: The operator presses the ship component scribing ruler with his left hand to fit the ship component, and holds the scribing pen with his right hand to scribing the reference edge of the first base plate assembly and the scribing reference edge of the second base plate assembly. The scribing line extends from the position of the ship component near the first through groove to the position near the second through groove.

[0020] S4: Repeat the above steps to complete the marking work for the remaining ship components.

[0021] The working principle and beneficial effects of the technical solution adopted in this invention are as follows:

[0022] The ship component marking ruler of this invention is structurally configured with a first base plate assembly and a second base plate assembly. The upper part of both the first and second base plate assemblies serves as a marking reference edge, which is a straight line. Near the outer end of the upper part of the first base plate assembly, a first positioning hole and a first limiting hole are provided. A first fixed plate positioning hole and a first positioning plate limiting hole are provided on the first positioning plate. These two holes are movably connected via a first rotating shaft, ensuring a reliable connection while allowing the first positioning plate to rotate flexibly relative to the first base plate assembly. The first positioning plate has a protruding first arc-shaped positioning structure, which engages with a first through-slot on the ship component to achieve positioning. Near the outer end of the upper part of the second base plate assembly, a second positioning hole and a second limiting hole are provided. The second positioning plate also has a second fixed plate positioning hole and a second positioning plate limiting hole, which are movably connected via a second rotating shaft, ensuring a reliable connection while allowing the second positioning plate to rotate flexibly relative to the second base plate assembly. The second positioning plate has a protruding second arc-shaped positioning structure, which engages with a second through-slot on the ship component to achieve positioning. The first base plate assembly and the second base plate assembly are connected by a connecting structure. The connecting structure reliably connects the first base plate assembly and the second base plate assembly, and at the same time allows them to slide relative to each other, realizing the length extension and retraction adjustment of the scribing ruler, changing the relative distance between the first positioning plate and the second positioning plate, meeting the scribing needs of ship components of different models and sizes, improving the applicability, eliminating the need to manufacture a large number of scribing rulers, and saving costs. Attached Figure Description

[0023] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0024] Figure 1 This is a schematic diagram of the structure of the ship component marking ruler described in this invention;

[0025] Figure 2 This is a schematic diagram of the structure of the first component of the ship component marking ruler described in this invention;

[0026] Figure 3 This is a schematic diagram of the structure of the second component of the ship component marking ruler described in this invention;

[0027] Figure 4 This is a schematic diagram of the structure of the first positioning plate of the ship component marking ruler described in this invention;

[0028] Figure 5 This is a schematic diagram of the structure of the second positioning plate of the ship component marking ruler described in this invention;

[0029] Figure 6 This is a structural schematic diagram of the ship component described in this invention;

[0030] Figure 7 This is a partial structural diagram of the ship component marking ruler described in this invention used in conjunction with ship components for marking operations.

[0031] Figure 8 This is a partial structural diagram of the ship component marking ruler described in this invention used in conjunction with ship components for marking operations.

[0032] Figure 9 This is a schematic diagram of the structure of the ship component scribing ruler described in this invention when the concentric hole is used as the rotating shaft connection hole;

[0033] Figure 10 This is a schematic diagram of the structure of the ship component scribing ruler of the present invention when the eccentric hole is used as the connecting hole for the rotating shaft;

[0034] The labels in the attached diagram are as follows:

[0035] A. First substrate assembly; A1. First positioning hole; A2. First limiting hole; A3. First positioning plate; A4. First fixed plate positioning hole; A5. First positioning plate limiting hole; A6. First upper protrusion; A7. First lower protrusion; A8. First clamping plate; A9. First limiting protrusion; A10. First bolt and nut assembly; A11. Upper first fixed plate positioning hole; A12. Lower first fixed plate positioning hole; A13. Upper first positioning plate limiting hole; A14. Lower first positioning plate limiting hole; A15. First adjusting handle; A16. First arc-shaped positioning structure; A17. Protruding shoulder; A18. First rotating shaft;

[0036] B. Second substrate assembly; B1. Second positioning hole; B2. Second limiting hole; B3. Second positioning plate; B4. Second fixed plate positioning hole; B5. Second positioning plate limiting hole; B6. Second upper protrusion; B7. Second lower protrusion; B8. Second clamping plate; B9. Second limiting protrusion; B10. Second bolt and nut assembly; B11. Upper second fixed plate positioning hole; B12. Lower second fixed plate positioning hole; B13. Upper second positioning plate limiting hole; B14. Lower second positioning plate limiting hole; B15. Second adjusting handle; B16. Second arc-shaped positioning structure;

[0037] D. Connection structure;

[0038] E. Ship component; E1. First through groove; E2. Groove portion; E3. Through hole portion; E4. Side portion; E5. Second through groove; E6. Straight edge portion;

[0039] F. Component positioning lines. Detailed Implementation

[0040] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of the present invention, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:

[0041] As attached Figure 1 - Appendix Figure 10As shown, this invention relates to a marking ruler for ship components. The marking base plate includes a first base plate assembly A and a second base plate assembly B. The upper part of the first base plate assembly A is a marking reference edge C, and the upper part of the second base plate assembly B is a marking reference edge C. The upper part of the first base plate assembly A, near its outer end, is provided with a first positioning hole A1 and a first limiting hole A2. A first positioning plate A3 is provided with a first positioning plate positioning hole A4 and a first positioning plate limiting hole A5. A first arc-shaped positioning structure A16 protruding outwards is provided on the first positioning plate A3. The upper part of the second base plate assembly B, near its outer end, is provided with a first positioning hole B1 and a first limiting hole B2. A first positioning plate B3 is provided with a first positioning plate positioning hole B4 and a first positioning plate limiting hole B5. A second arc-shaped positioning structure B16 protruding outwards is provided on the second positioning plate B3. The first base plate assembly A and the second base plate assembly B are connected by a connecting structure D. This invention addresses the shortcomings of existing technologies by proposing an improved technical solution. In the structural setup, a first substrate assembly A and a second substrate assembly B are respectively configured. The upper part of the first substrate assembly A is a scribing reference edge C, and the upper part of the second substrate assembly B is a scribing reference edge C. The scribing reference edge C is a straight structure. The upper part of the first substrate assembly A is provided with a first positioning hole A1 and a first limiting hole A2 near the outer end. The first positioning plate A3 is provided with a first fixed plate positioning hole A4 and a first positioning plate limiting hole A5. The first fixed plate positioning hole A4 and the first positioning hole A1 are movably connected by a first rotating shaft, so as to achieve a reliable connection while ensuring that the first positioning plate A3 can rotate flexibly relative to the first substrate assembly A. The first positioning plate A3 is provided with a first arc-shaped positioning structure A16 that protrudes outward. The first arc-shaped positioning structure A16 is used to engage with the first through groove of the ship component E to achieve positioning of the two. The second base plate assembly B has a second positioning hole B1 and a second limiting hole B2 near its outer end on its upper part. The second positioning plate B3 has a second fixed plate positioning hole B4 and a second positioning plate limiting hole B5. The second fixed plate positioning hole B4 and the second positioning hole B1 are movably connected by a second rotating shaft, ensuring a reliable connection while allowing the second positioning plate B3 to rotate flexibly relative to the second base plate assembly B. The second positioning plate B3 has a protruding second arc-shaped positioning structure B16, which is used to engage with the second through slot of the ship component E to achieve positioning. The first base plate assembly A and the second base plate assembly B are connected by a connecting structure D. The connecting structure D reliably connects the first base plate assembly A and the second base plate assembly B, while also allowing relative sliding between them. This enables the length adjustment of the scribing ruler, changing the relative distance between the first positioning plate A3 and the second positioning plate B3, accommodating scribing applications on ship components of different models and sizes, expanding its applicability, eliminating the need to manufacture a large number of scribing rulers, and saving costs. The ship component marking ruler described in this invention has a simple structure, which can conveniently and quickly complete the marking of positioning lines for ship components, reduce workload and errors, and can be completed by one person without the assistance of multiple people. The steps are simple, which can save a lot of working time and reduce the intensity of marking operations.

[0042] The connection structure D includes a first connection structure and a second connection structure. The first connection structure consists of a first upper protrusion A6 and a first lower protrusion A7 near the inner end of the upper part of the first substrate assembly A. The first upper protrusion A6 and the first lower protrusion A7 are connected to a first clamping plate A8. A first connection channel is formed between the first substrate assembly A and the first clamping plate A8, through which the second substrate assembly B moves. The second connection structure consists of a second upper protrusion B6 and a second lower protrusion B7 near the inner end of the upper part of the second substrate assembly B. The second upper protrusion B6 and the second lower protrusion B7 are connected to a second clamping plate B8. A second connection channel is formed between the second substrate assembly B and the second clamping plate B8, through which the first substrate assembly A moves. In these structures, the first and second channels reliably limit the movement of the first substrate assembly A and the second substrate assembly B, ensuring a reliable connection. Thus, when the outer ends of the first substrate assembly A and the second substrate assembly B are pulled outwards, their relative positions change, resulting in an increase in the overall length of the scribing ruler. When the outer ends of the first substrate assembly A and the second substrate assembly B are pushed inward, the relative positions of the first substrate assembly A and the second substrate assembly B change, thereby shortening the overall length of the scribing ruler and increasing its applicability.

[0043] The first substrate assembly A has a first limiting protrusion A9 near its inner end at its lower part, and the second substrate assembly B has a second limiting protrusion B9 near its inner end at its lower part. In this structure, the first limiting protrusion A9 and the second limiting protrusion B9 serve to limit movement at both ends, preventing a small deviation from the theoretical position of the component line when the distance between the outer ends of the first substrate assembly A and the outer ends of the second substrate assembly B is less than approximately 100mm due to the gap between the substrate and the bolt assembly, which would cause the scribing reference edge to form an angle.

[0044] The first upper protrusion A6 and the first lower protrusion A7 are respectively connected to the first clamping plate A8 via the first bolt and nut assembly A10; the second upper protrusion B6 and the second lower protrusion B7 are respectively connected to the second clamping plate B8 via the second bolt and nut assembly B10. In this structure, the first bolt and nut assembly A10 reliably connects the first substrate assembly A and the first clamping plate A8, and the second bolt and nut assembly B10 reliably connects the second substrate assembly B and the second clamping plate B8, ensuring a reliable connection between the two.

[0045] The ship component E has a first through groove E1 on one side, which includes a recessed portion E2, a through hole portion E3, a side portion E4, and a straight edge portion E6. The ship component E also has a second through groove E5 on the other side, which includes the same recessed portion E2, through hole portion E3, side portion E4, and straight edge portion E6. This structure defines the ship component's structure. To facilitate marking, a marking ruler is provided, adaptable to the ship component's structure, allowing for convenient, quick, simple, and accurate marking operations.

[0046] The first positioning plate A3 has a first positioning hole A4, which includes an upper first positioning hole A11 (a concentric hole) and a lower first positioning hole A12 (an eccentric hole). The first positioning plate limiting hole A5 includes an upper first positioning hole A13 (corresponding to the concentric hole) and a lower first positioning hole A14 (corresponding to the eccentric hole). A raised shoulder A17 is also provided on the outer side of the first positioning plate A3. In this structure, the upper first positioning hole A11 and the upper first positioning hole A13 are correctly positioned first positioning holes and first positioning plate limiting holes, while the lower first positioning hole A12 and the lower first positioning hole A14 are offset from their respective positions by a certain distance. This allows for the connection and limiting of the first positioning plate at different positions. The second positioning plate B3 has two positioning holes: an upper second positioning hole B11 (a concentric hole) and a lower second positioning hole B12 (an eccentric hole). The second positioning plate limiting hole B5 has an upper second positioning hole B13 (corresponding to the concentric hole) and a lower second positioning hole B14 (corresponding to the eccentric hole). A raised shoulder is also provided on the outer side of the second positioning plate B3. In this structure, the upper second positioning hole B11 and the upper second positioning hole B13 are correctly positioned second positioning holes and second positioning hole limiting holes, while the lower second positioning hole B12 and the lower second positioning hole B14 are positioned at a certain distance from each other. This allows for connection and limiting of the second positioning plate at different positions. The scribing ruler of this invention is designed based on the reverse positioning method of component positioning lines. The rotation shaft of the positioning hole can pass through a concentric hole or an eccentric hole (the concentric hole and the eccentric hole are offset by a certain distance, such as 6mm). The setting of the positioning concentric hole and the positioning eccentric hole, as well as the limiting concentric hole and the limiting eccentric hole, respectively correspond to the non-eccentric and eccentric or two node forms of the longitudinal bone connecting component. For non-eccentric, the rotation shaft passes through the concentric hole, and for eccentric, the rotation shaft passes through the eccentric hole. The limiting hole also corresponds to the insertion of a limiting pin. For the concentric hole of the positioning plate as the hole through which the rotation shaft passes, it corresponds to the situation where the ship component has no deviation value from the corner point of the longitudinal bone, that is, the rotation shaft passes through the concentric hole, and the limiting pin passes through the corresponding concentric limiting hole. With the eccentric hole of the positioning plate as the rotation axis, when the connecting component deviates from the corner point of the longitudinal skeleton, the rotation axis passes through the eccentric hole, and the limiting pin passes through the corresponding eccentric limiting hole. The rotation angle of the positioning plate around the two sides of the rotation axis effectively meets the deflection angle of the components connecting the inner and outer bottom (shell) longitudinal skeletons in the ship design.

[0047] The first positioning hole A1 of the first substrate assembly A and the first fixed plate positioning hole A4 of the first positioning plate A3 are connected by a first rotating shaft; the second positioning hole B1 of the second substrate assembly B and the second fixed plate positioning hole B4 of the second positioning plate B3 are connected by a second rotating shaft. With this structure, the rotating shaft reliably enables flexible connection between the positioning plate and the substrate assembly.

[0048] The first positioning plate A3 is provided with a first adjusting handle A15 near its outer end, and the second positioning plate B3 is provided with a second adjusting handle B15 near its outer end. With this structure, the adjusting handles are convenient for operators to use when adjusting the position of the positioning plate relative to the base plate assembly.

[0049] This invention also relates to a simple method for marking positioning lines on ship components, which can quickly and easily complete the marking process, reduce workload and errors, and can be completed by one person without the need for multiple assistants. The method saves a significant amount of time and reduces the intensity of the marking operation. The marking steps of the method are as follows:

[0050] S1: The first base plate assembly A and the second base plate assembly B are movably connected by the connecting structure D to form a ship component scribing ruler. The ship component scribing ruler is brought close to the ship component E, and the first positioning plate A3 on the first base plate assembly A is brought close to the first through groove E1, and the second positioning plate B3 on the second base plate assembly B is brought close to the second through groove E5; S2: According to the deflection position of the ship component E, the operator rotates the first positioning plate A3 to adjust the direction of the first positioning plate A3 relative to the first base plate assembly A, so that the first arc-shaped positioning structure A16 of the first positioning plate A3 is embedded in the groove E2 of the first through groove E1, realizing the first positioning plate A3 in Positioning on ship component E: The operator rotates the second positioning plate B3, adjusting its direction relative to the second base plate assembly B, so that the second arc-shaped positioning structure B16 of the second positioning plate B3 is embedded in the groove E2 of the second through groove E5, thus positioning the second positioning plate B3 on the ship component E; S3: The operator presses the ship component marking ruler against the ship component with their left hand, and holds a marking pen in their right hand, marking a line close to the marking reference edge C on the upper part of the first base plate assembly A and the marking reference edge C on the upper part of the second base plate assembly B, extending the line from the position of the ship component E near the first through groove E1 to the position near the second through groove E5. S4: Repeat the above steps to complete the marking work on the remaining ship components E. The above method of the present invention can conveniently and quickly complete the marking of positioning lines on ship components, reduce workload, reduce errors, and can be completed by one person without the assistance of multiple people. The steps are simple, which can save a lot of working time and reduce the intensity of marking operations.

[0051] The ship component marking ruler of the present invention is structurally configured with a first base plate assembly A and a second base plate assembly B. The upper part of the first base plate assembly A is a marking reference edge C, and the upper part of the second base plate assembly B is a marking reference edge C. The marking reference edge C is a straight line structure. The upper part of the first base plate assembly A is provided with a first positioning hole A1 and a first limiting hole A2 near the outer end. The first positioning plate A3 is provided with a first fixed plate positioning hole A4 and a first positioning plate limiting hole A5. The first fixed plate positioning hole A4 and the first positioning hole A1 are movably connected by a first rotating shaft, so as to achieve a reliable connection and ensure that the first positioning plate A3 can rotate flexibly relative to the first base plate assembly A. The first positioning plate A3 is provided with a first arc-shaped positioning structure A16, which is used to engage with the first through groove of the ship component E to achieve positioning of the two. The second base plate assembly B has a second positioning hole B1 and a second limiting hole B2 near its outer end on its upper part. The second positioning plate B3 has a second fixed plate positioning hole B4 and a first positioning plate limiting hole B5. The second fixed plate positioning hole B4 and the second positioning hole B1 are movably connected by a second rotating shaft, ensuring a reliable connection while allowing the second positioning plate B3 to rotate flexibly relative to the second base plate assembly B. The second positioning plate B3 has a protruding second arc-shaped positioning structure B16, which is used to engage with the second through slot of the ship component E to achieve positioning. The first base plate assembly A and the second base plate assembly B are connected by a connecting structure D. The connecting structure D reliably connects the first base plate assembly A and the second base plate assembly B, while also allowing relative sliding between them. This enables the length adjustment of the scribing ruler, changing the relative distance between the first positioning plate A3 and the second positioning plate B3, meeting the scribing needs of ship components of different models and sizes, increasing the applicability, eliminating the need to manufacture a large number of scribing rulers, and saving manufacturing and storage costs.

[0052] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A marking ruler for ship components, characterized in that: The scribing substrate includes a first substrate assembly (A) and a second substrate assembly (B). The upper part of the first substrate assembly (A) is a scribing reference edge (C), and the upper part of the second substrate assembly (B) is a scribing reference edge (C). The upper part of the first substrate assembly (A) near the outer end is provided with a first positioning hole (A1) and a first limiting hole (A2). The first positioning plate (A3) is provided with a first fixed plate positioning hole (A4) and a first positioning plate limiting hole (A5). The first positioning plate (A3) is provided with an outwardly protruding first arc-shaped positioning structure (A16). The upper part of the second substrate assembly (B) near the outer end is provided with a second positioning hole (B1) and a second limiting hole (B2). The second positioning plate (B3) is provided with a second fixed plate positioning hole (B4) and a second positioning plate limiting hole (B5). The second positioning plate (B3) is provided with an outwardly protruding second arc-shaped positioning structure (B16). The first substrate assembly (A) and the second substrate assembly (B) are connected by a connecting structure (D). The connection structure (D) includes a first connection structure and a second connection structure. The first connection structure is as follows: a first upper protrusion (A6) and a first lower protrusion (A7) are provided on the upper part of the first substrate assembly (A) near its inner end. The first upper protrusion (A6) and the first lower protrusion (A7) are connected to a first clamping plate (A8). A first connection channel is provided between the first substrate assembly (A) and the first clamping plate (A8). The second substrate assembly (B) moves through the first connection channel. The second connection structure is as follows: a second upper protrusion (B6) and a second lower protrusion (B7) are provided on the upper part of the second substrate assembly (B) near its inner end. The second upper protrusion (B6) and the second lower protrusion (B7) are connected to a second clamping plate (B8). A second connection channel is provided between the second substrate assembly (B) and the second clamping plate (B8). The first substrate assembly (A) moves through the second connection channel. The first substrate assembly (A) has a first limiting protrusion (A9) near its inner end at the lower part, and the second substrate assembly (B) has a second limiting protrusion (B9) near its inner end at the lower part. The first positioning plate positioning hole (A4) on the first positioning plate (A3) includes an upper first positioning plate positioning hole (A11) and a lower first positioning plate positioning hole (A12), and the first positioning plate limiting hole (A5) includes an upper first positioning plate limiting hole (A13) and a lower first positioning plate limiting hole (A14).

2. The ship component marking ruler according to claim 1, characterized in that: The first upper protrusion (A6) and the first lower protrusion (A7) are respectively connected to the first clamping plate (A8) via the first bolt and nut assembly (A10); the second upper protrusion (B6) and the second lower protrusion (B7) are respectively connected to the second clamping plate (B8) via the second bolt and nut assembly (B10).

3. The ship component marking ruler according to claim 1 or 2, characterized in that: The ship component (E) is provided with a first through groove (E1) on one side, the first through groove (E1) including a groove portion, a through hole portion, a side portion and a straight edge portion, and a second through groove (E5) is provided on the other side of the ship component (E), the second through groove (E5) including a groove portion, a through hole portion, a side portion and a straight edge portion.

4. The ship component marking ruler according to claim 2, characterized in that: The second positioning plate positioning hole (B4) on the second positioning plate (B3) includes an upper second positioning plate positioning hole (B11) and a lower second positioning plate positioning hole (B12), and the second positioning plate limiting hole (B5) includes an upper second positioning plate limiting hole (B13) and a lower second positioning plate limiting hole (B14).

5. The ship component marking ruler according to claim 3, characterized in that: The first positioning hole (A1) of the first substrate assembly (A) and the first positioning plate positioning hole (A4) of the first positioning plate (A3) are connected by a first rotating shaft; The second positioning hole (B1) of the second substrate assembly (B) and the second positioning plate positioning hole (B4) of the second positioning plate (B3) are connected by a second rotating shaft.

6. The ship component marking ruler according to claim 4, characterized in that: The first positioning plate (A3) is provided with a first adjustment handle (A15) near its outer end, and the second positioning plate (B3) is provided with a second adjustment handle (B15) near its outer end.

7. A marking method using a marking ruler for ship components as described in any one of claims 1 to 6, characterized in that: The marking steps of the marking method for the ship component marking ruler are as follows: S1: The first base plate assembly (A) and the second base plate assembly (B) are connected by the connecting structure (D) to form a ship component scribing ruler. The ship component scribing ruler is brought close to the ship component (E), the first positioning plate (A3) on the first base plate assembly (A) is brought close to the first through groove (E1), and the second positioning plate (B3) on the second base plate assembly (B) is brought close to the second through groove (E5). S2: Based on the deflection position of the ship component (E), the operator rotates the first positioning plate (A3) and adjusts its direction relative to the first base plate assembly (A), so that the first arc-shaped positioning structure (A16) of the first positioning plate (A3) is embedded in the groove of the first through slot (E1), thereby achieving the positioning of the first positioning plate (A3) on the ship component (E); the operator rotates the second positioning plate (B3) and adjusts its direction relative to the second base plate assembly (B), so that the second arc-shaped positioning structure (B16) of the second positioning plate (B3) is embedded in the groove of the second through slot (E5), thereby achieving the positioning of the second positioning plate (B3) on the ship component (E); S3: The operator presses the ship component scribing ruler with his left hand to fit the ship component, and holds the scribing pen with his right hand to scribing the reference edge (C) on the upper part of the first base plate assembly (A) and the scribing reference edge (C) on the upper part of the second base plate assembly (B). The scribing line extends from the ship component (E) near the first through groove (E1) to the position near the second through groove (E5). S4: Repeat the above steps to complete the marking work on the remaining ship components (E).

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