A projection line control method for installation angle of a swash plate
By determining the reference projection lines and points during ship construction, the installation process of the inclined plate was controlled, thus solving the problem of installation deviation of the inclined plate structure and improving the installation accuracy and section quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
- Filing Date
- 2023-07-28
- Publication Date
- 2026-07-07
AI Technical Summary
During shipbuilding, the installation of inclined plate structures lacks effective reference benchmarks, resulting in large deviations in installation position and angle, affecting the accuracy and quality of the sections, and increasing the amount of rework.
By determining the positioning line and projection line of the reference inclined plate, and combining the dimensions of the construction drawings, the reference projection lines and points are marked on the compartment. The inclined plate is hoisted and aligned with the reference projection lines and points. The alignment is maintained during the welding process until completion.
This improved the installation accuracy of the inclined plate, reduced subsequent correction work, saved labor costs, and ensured the overall pass rate of the segment.
Smart Images
Figure CN117048795B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of shipbuilding, and in particular to a method for controlling the projection line of an inclined plate installation angle. Background Technology
[0002] During shipbuilding, in the fabrication of the stern engine room sections, some inclined plate structures were installed on the non-structural surfaces of the compartments. After installation, as welding operations commenced, the deformation of the welding angle of the inclined plates was not controlled. Ultimately, after welding was completed, the angle of the inclined plates would tilt by 10-30 millimeters, affecting the accuracy and quality of the section. This, in turn, caused misalignment of the inclined plates during the final assembly process, requiring extensive cutting and straightening work, increasing rework workload, and wasting labor costs.
[0003] Regarding the aforementioned technologies, the inventors believe that the lack of effective reference benchmarks and installation methods during the installation process of the inclined plate structure leads to significant deviations in installation position and angle. Summary of the Invention
[0004] In order to control the positioning angle during the inclined plate manufacturing process and welding operation, and improve the installation accuracy of the inclined plate, this application provides a projection line control method for the inclined plate installation angle.
[0005] This application provides a method for controlling the projection line of the inclined plate installation angle, which adopts the following technical solution:
[0006] A method for controlling the projection line of an inclined plate installation angle includes the following steps:
[0007] S01: Compartment positioning completed, verticality confirmed to meet standard requirements;
[0008] S02: Determine the construction drawings, and determine the reference inclined plate positioning line, reference projection line and reference projection point in the construction drawings;
[0009] S03: According to the dimensions in the construction drawings, mark the reference inclined plate positioning line on the compartment, and make the reference projection line and reference projection point on the ground.
[0010] S04: Inclined plate hoisting, hoist the inclined plate from the reference inclined plate positioning line on the compartment, determine that the projection line during the inclined plate installation process is aligned with the reference projection line made in S03, determine that the projection point during the inclined plate installation process is aligned with the reference projection point made in S03, and determine that the length of the line connecting the inclined plate and the outer plate meets the dimensions of the construction drawings.
[0011] S05: Weld the inclined plate onto the compartment, ensuring that the projection line during the inclined plate installation process is aligned with the reference projection line created in S03, and that the projection point during the inclined plate installation process is aligned with the reference projection point created in S03, until the welding is completed.
[0012] Optionally, in S02, the reference positioning line includes a reference inclined plate projection line (the vertical projection of the reference inclined plate positioning line onto the ground), a reference upper edge projection line (the vertical projection of the upper edge of the inclined plate onto the ground), a reference lower edge projection line (the vertical projection of the lower edge of the inclined plate onto the ground), and a reference edge projection line (the vertical projection of the side wall of the inclined plate away from the compartment onto the ground). The projection points include multiple reference limiting points located on the side wall of the inclined plate away from the compartment. The vertical projection of the reference limiting points onto the ground is the reference projection limiting point. The multiple reference positioning points located on the side wall of the inclined plate away from the compartment are further fixedly connected to an outer plate. The horizontal distance between the multiple reference positioning points and the outer plate is the reference space dimension.
[0013] Optionally, in S03, the reference inclined plate projection line, the reference upper edge projection line, the reference lower edge projection line, and the reference edge projection line are made on the ground according to the construction drawings. The reference inclined plate projection line, the reference upper edge projection line, the reference lower edge projection line, and the reference edge projection line form a closed quadrilateral.
[0014] Optionally, according to the construction drawings, multiple limiting points are selected on the edge line of the inclined plate away from the compartment, and the vertical projection of the multiple limiting points is located on the edge projection line to form multiple projection limiting points.
[0015] Optionally, in S04, an outer plate is also fixedly connected to the side wall of the compartment. A positioning point is selected on the inclined plate according to the reference positioning point in the construction drawings, and the spatial dimension formed by the horizontal line connecting the positioning point and the outer plate is confirmed.
[0016] Optionally, in S05, during the welding process, it is confirmed that the spatial dimension formed by the horizontal line connecting the positioning point and the outer plate meets the standard for the reference spatial dimension error between the two.
[0017] Optionally, in S05, after welding is completed, it is confirmed again that the spatial dimension formed by the horizontal line connecting the positioning point and the outer plate meets the standard error of the reference spatial dimension between the two.
[0018] Optionally, in S04, before welding the inclined plate, a fixed support is erected on the ground to support the inclined plate. After the inclined plate is welded, the fixed support is removed.
[0019] Optionally, in S05, after welding is completed, the inclined plate is in its natural state, and the overlap between the projected position of the inclined plate and the reference projection line and reference projection point created in S03 is confirmed.
[0020] In summary, this application includes at least one of the following beneficial technical effects:
[0021] 1. By creating the projection lines and spatial dimensions of the inclined plate, measurable data is used to control the positioning angle during the inclined plate manufacturing process and electric welding operation, ensuring that the welding is completed and the angle meets the requirements.
[0022] 2. Improved the installation accuracy of similar inclined plates in segmented sections, and also improved the overall pass rate of the segments, avoiding subsequent correction work caused by poor inclined plate angles, thus saving correction time. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the reference structure in the construction drawings of a method for controlling the projection line of an inclined plate installation angle according to an embodiment of this application.
[0024] Figure 2 This is a structural schematic diagram of the construction process of a method for controlling the projection line of an inclined plate installation angle according to an embodiment of this application.
[0025] Explanation of reference numerals in the attached drawings: 1. Compartment; 11. Reference inclined plate positioning line; 12. Inclined plate positioning line; 2. Inclined plate; 3. Outer plate; 4. Reference projection line; 41. Reference upper edge projection line; 42. Reference lower edge projection line; 43. Reference inclined plate projection line; 44. Reference edge projection line; 5. Reference projection point; 51. Reference limit point; 52. Reference projection limit point; 6. Reference positioning point; 61. Reference spatial dimension; 7. Projection line; 71. Upper edge projection line; 72. Lower edge projection line; 73. Inclined plate projection line; 74. Edge projection line; 8. Projection point; 81. Limit point; 82. Projection limit point; 9. Positioning point; 91. Spatial dimension. Detailed Implementation
[0026] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.
[0028] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0029] This application discloses a method for controlling the projection line of an inclined plate mounting angle. (Refer to...) Figure 1 , Figure 2A method for controlling the projection line of an inclined plate installation angle includes the following steps:
[0030] S01: The positioning of compartment 1 is complete, and the verticality is confirmed to meet the standard requirements;
[0031] S02: Determine the construction drawings, and determine the installation position of the inclined plate 2 according to the standard on the construction drawings. At the same time, determine the reference projection line 4 and reference projection point 5 based on the standard inclined plate 2.
[0032] The reference projection line 4 includes a reference upper edge projection line 41 that vertically projects the upper edge of the inclined plate 2 onto the ground, a reference lower edge projection line 42 that vertically projects the lower edge of the inclined plate 2 onto the ground, a reference inclined plate projection line 43 that vertically projects the side wall of the inclined plate 2 near the compartment 1 onto the ground, and a reference edge projection line 44 that vertically projects the side wall of the inclined plate 2 away from the compartment 1 onto the ground.
[0033] The reference projection points 5 include reference limiting points 51 located on the side wall of the inclined plate 2 opposite to the compartment 1, which are sequentially named A, B, C, D, E, and F along the top to bottom edge of the inclined plate 2. Reference projection limiting points 52 are formed sequentially by vertically projecting the reference limiting points 51 onto the reference edge projection line 44, and are named a, b, c, d, e, and f. All reference projection limiting points 52 are located on the reference edge projection line 44.
[0034] Mark the reference inclined plate positioning line 11 on the side wall of compartment 1 according to the dimensions in the construction drawings.
[0035] The side wall of the partition is also fixedly connected to an outer plate 3. There is a space between the outer plate 3 and the inclined plate 2. Five reference positioning points 6 are set on the inclined plate 2 along the height direction, namely: point G, point H, point I, point J, and point K.
[0036] The distance between the reference positioning point 6 and the outer plate 3 is the reference space dimension 61. Along the height direction, the reference space dimensions 61 are L1, L2, L3, L4, and L5.
[0037] S03: According to the reference projection line 4 and reference projection point 5 of the construction drawings, make reference projection line 4 and reference projection point 5 on the construction ground, and draw the inclined plate positioning line 12 on the side wall of compartment 1 according to the reference inclined plate positioning line 11 of the construction drawings.
[0038] S04: Hoist the inclined plate 2 so that the inclined plate 2 coincides with the inclined plate positioning line 12 on the compartment 1. A support beam is set below the inclined plate 2 to support and fix the inclined plate 2, which facilitates installation.
[0039] During installation, the projection line 7 and projection point 8 formed between the inclined plate 2 and the ground are aligned with the reference projection line 4 and reference projection point 5 located on the ground.
[0040] The projection line 7 includes an upper projection line 71 for the vertical projection located at the upper edge of the inclined plate 2, a lower projection line 72 for the vertical projection located at the lower edge of the inclined plate 2, an inclined plate projection line 73 for the vertical projection located on the side wall of the inclined plate 2 near the compartment 1, and an edge projection line 74 for the vertical projection located on the edge of the inclined plate 2 away from the compartment 1.
[0041] The upper projection line 71, the lower projection line 72, the inclined plate projection line 73, and the edge projection line 74 enclose a closed quadrilateral.
[0042] The projection points 8 include corresponding limit points 81 selected on the edge of the inclined plate 2 away from the compartment 1 according to the reference limit point 51, and are as follows from the upper edge of the inclined plate 2 to the lower edge of the inclined plate 2: point A′, point B′, point C′, point D′, point E′, and point F′.
[0043] Vertical projections of the limiting points 81 on the ground are successively made as projection limiting points 82. The projection limiting points 82, along the upper projection line 71 to the lower projection line 72, are: a′, b′, c′, d′, e′, and f′. All limiting projection points 8 are located on the edge projection line 74.
[0044] Compare points a′, b′, c′, d′, e′, and f′ with points a, b, c, d, e, and f on the ground, such that points a′, b′, c′, d′, e′, and f′ are relatively coincident with points a, b, c, d, e, and f.
[0045] Positioning points 9 are marked on the side wall of inclined plate 2 relative to the reference positioning point 6, in the following order: G′, H′, I′, J′, and K′. The horizontal distance between positioning points 9 and outer plate 3 is measured as spatial dimension 91, in the following order along the height direction: L1′, L2′, L3′, L4′, and L5′.
[0046] Compare L1, L2, L3, L4, L5 with L1′, L2′, L3′, L4′, L5′ to confirm that the data between L1, L2, L3, L4, L5 and L1′, L2′, L3′, L4′, L5′ meet the requirements. This ensures that the angle and position of inclined plate 2 meet the requirements.
[0047] S05: During the welding process, repeatedly confirm whether the reference projection line 4 and projection line 7, the reference projection point 5 and projection point 8 coincide, and whether the reference space dimension 61 and space dimension 91 meet the requirements until the welding is completed.
[0048] After welding, the support beam is removed, allowing the inclined plate 2 to be in its natural state. Finally, it is confirmed again whether the reference projection line 4 coincides with the projection line 7, and whether the reference projection point 5 coincides with the projection point 8, and whether the reference spatial dimension 61 and spatial dimension 91 meet the requirements. If the standards are met, it indicates that the angle and position of the inclined plate 2 meet the standard requirements.
[0049] In this invention, the term "multiple" refers to at least two or more, unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix," etc., should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.
Claims
1. A method for controlling the projection line of an inclined plate installation angle, characterized in that: It includes the following steps: S01: The positioning of compartment (1) is completed, and the verticality is confirmed to meet the standard requirements; S02: Determine the construction drawings, and determine the reference inclined plate positioning line (11), reference projection line (4), and reference projection point (5) in the construction drawings. The reference projection line (4) includes the reference upper edge projection line (41), the reference lower edge projection line (42), the reference inclined plate projection line (43), and the reference edge projection line (44). The reference upper edge projection line (41), the reference lower edge projection line (42), the reference inclined plate projection line (43), and the reference edge projection line (44) are respectively the upper edge, the lower edge, the side wall near the compartment (1), and the side wall away from the compartment of the inclined plate (2). (1) The vertical projection of one side wall on the ground, and the four of them form a closed quadrilateral; the reference projection point (5) includes the reference projection limit point (52) formed by the vertical projection of multiple reference limit points (51) on the side wall of the inclined plate (2) away from the compartment (1) on the ground; the construction drawings also determine multiple reference positioning points (6) on the side wall of the inclined plate (2) away from the compartment (1), the side wall of the compartment (1) is fixedly connected to the outer plate (3), and the horizontal distance between the multiple reference positioning points (6) and the outer plate (3) is the reference space dimension (61); S03: According to the dimensions in the construction drawings, draw the reference inclined plate positioning line (11) on the compartment (1), and make the reference projection line (4) and reference projection point (5) on the ground. S04: Hoisting of inclined plate (2): Hoist the inclined plate (2) to the reference inclined plate positioning line (11) on the compartment (1), determine that the projection line (7) during the installation of the inclined plate (2) is opposite to the reference projection line (4) made in S03, determine that the projection point (8) during the installation of the inclined plate (2) is opposite to the reference projection point (5) made in S03, and select a positioning point (9) on the inclined plate (2) according to the reference positioning point (6) in the construction drawings, and confirm that the spatial dimension (91) formed by the horizontal line connecting the positioning point (9) and the outer plate (3) meets the standard error of the reference spatial dimension (61) in the construction drawings. S05: Weld the inclined plate (2) onto the compartment (1), determine that the projection line (7) of the inclined plate (2) during installation is opposite to the reference projection line (4) made in S03, determine that the projection point (8) of the inclined plate (2) during installation is opposite to the reference projection point (5) made in S03, until the welding is completed.
2. The projection line control method for the inclined plate installation angle according to claim 1, characterized in that: In S04, according to the reference limit point (51) of the construction drawings, multiple limit points (81) are selected on the edge line of the inclined plate (2) away from the compartment (1), and the vertical projection of the multiple limit points (81) forms multiple projection limit points (82).
3. The projection line control method for the inclined plate installation angle according to claim 1, characterized in that: In S05, after welding is completed, it is confirmed again that the error between the spatial dimension (91) formed by the horizontal line connecting the positioning point (9) and the outer plate (3) and the reference spatial dimension (61) between the construction drawings meets the standard.
4. The projection line control method for the inclined plate installation angle according to claim 1, characterized in that: In S04, before welding the inclined plate (2), a fixed support is erected on the ground to support the inclined plate (2). After the inclined plate (2) is welded, the fixed support is removed.
5. The projection line control method for the inclined plate installation angle according to claim 1, characterized in that: In S05, after welding is completed, the inclined plate (2) is in a natural state. The coincidence of the projection position of the inclined plate (2) with the reference projection line (4) and reference projection point (5) made in S03 is confirmed.