Gap bridge connecting, cutting and welding method for small marine parts
By setting up a bridge structure between small marine parts and forming a assembly for cutting and welding, the problems of low cutting efficiency, high safety risks and high cost in the prior art are solved, and an efficient and safe cutting and welding process is achieved.
Patent Information
- Application Number
- CN202510654043.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2025-08-19
AI Technical Summary
In the prior art, the cutting method for marine small parts has problems such as welding slag accumulation, steel mesh damage, low cutting efficiency, high safety risks and high labor costs.
A bridge structure is used to connect small marine parts to form a assembly for cutting and welding, avoid the use of steel mesh, improve cutting efficiency and safety, and assist in welding positioning through break-end.
It reduces production costs, improves cutting and welding efficiency, ensures safety and welding quality, and reduces labor intensity and material waste.
Smart Images
Figure CN120502972A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of cutting of shipbuilding plate parts, and in particular relates to a bridge connection and cutting and welding method for small ship parts. Background Art
[0002] In the shipbuilding industry, the construction of hull structures usually requires the precise cutting of a large number of small-sized patch parts for ships. These small-sized ship parts are used to be welded and connected with other components in the subsequent process through various forms such as flat welding and fillet welding. In the existing technology, small ship parts are generally classified and grouped according to their size and shape, and small ship parts with similar sizes and shapes are grouped together for subsequent plate nesting and layout design, and are polished after cutting and forming and then used for welding. The side of the small ship parts used for welding is called the welding edge, and the side not used for welding is called the free edge. The positioning during welding often requires the assistance of multiple tools, and the width of the weld during welding often depends on the experience of the construction workers. At present, the following two traditional cutting methods are commonly used for the small ship parts that have been nested as described above: one method is to first lay a steel mesh on the steel frame, and then cut the nested plate on the steel mesh; the other method, such as Figure 1 As shown, the nested plates are cut directly on the steel frame. After cutting, the small marine parts fall directly below the steel frame and are then picked up manually. The gap between the steel frames varies depending on the work site, with the gap width of the steel frames generally being 150mm and the height of the steel frames being 320mm. However, these two traditional cutting methods each have the following significant drawbacks:
[0003] Regarding the first method of laying a steel mesh on a steel frame and then cutting, since the mesh of the steel mesh is relatively fine, the welding slag generated during the cutting process easily accumulates in the gaps of the steel mesh and is difficult to remove. In addition, the steel mesh itself is easily damaged due to frequent cutting operations. Therefore, in the process of cutting a large number of small marine parts, it is often necessary to constantly replace the steel mesh, which undoubtedly increases the cost of use.
[0004] Regarding the second method of picking up small marine parts directly after cutting on the steel frame, small marine parts fall under the steel frame during the cutting process, and the area under the steel frame is often filled with turbid water, which requires construction workers to manually pick up small marine parts under the water-filled steel frame. In the process of picking up small marine parts, it is often difficult to quickly find the specific location of the small marine parts in the turbid water, and it is also difficult to perform precise clamping operations on small marine parts in turbid water. In addition, this working environment is also accompanied by higher safety risks, the safety factor of construction workers is low, and the production efficiency is not high, resulting in relatively high labor costs. Summary of the Invention
[0005] In order to solve the problems existing in the prior art mentioned above, the purpose of the present invention is to provide a bridge connection and cutting and welding method for small marine parts, which optimizes the nesting connection, cutting and welding processes of small marine parts. By flexibly arranging a bridge structure on the welding edge of small marine parts, small marine parts do not need to be placed on the steel frame when cutting, and can be directly placed on the steel frame for cutting. At the same time, it also solves the problem that small marine parts fall into the gap between the steel frames when cutting directly on the steel frames and need to be picked up manually, reduces the labor intensity of construction personnel, and improves the safety and production efficiency of a large number of small marine parts during cutting operations. At the same time, the small marine parts in the same prepared welding area are formed into a portable assembly through the bridge structure, saving production and transportation costs. The broken end design of the bridge structure also improves the accuracy and efficiency of welding, and has high economic value.
[0006] To achieve the above-mentioned and other related purposes, the present invention adopts the following technical solutions:
[0007] The present invention provides a bridge connection and cutting welding method for small marine parts, comprising the following steps:
[0008] S1. Screen the small marine parts to be nested according to the width of the steel frame gap and group them according to the area to be welded;
[0009] S2. Nesting and laying out the selected and grouped small marine parts. On the nesting layout, bridge structures are provided at the welding edges of the small marine parts so that the small marine parts located in the same pre-welding area and at similar pre-welding positions are assembled into an assembly, and the length of one side of the assembly parallel to the width of the steel frame gap exceeds the width of the steel frame gap.
[0010] S3. After the nesting layout is completed, cutting is performed according to the nesting layout diagram to obtain an assembly with a bridge structure;
[0011] S4. After the cutting is completed, the assembly with the bridge structure is moved to the corresponding preparatory welding area. When welding and installing at the welding position, the bridge structure on the assembly is disconnected to obtain an independent small marine part, and the broken end of the bridge structure located at the welding edge of the small marine part is retained. Finally, the broken end is used for positioning and welding operations.
[0012] As a preferred technical solution, in step S4, the bridge structure on the assembly is cut off by flame cutting.
[0013] Furthermore, in step S4, the specific steps of disconnecting the bridge structure on the assembly by flame cutting include: flame cutting and disconnecting the bridge structure from the center, so that 4 mm ends are retained on both sides of the bridge structure after flame cutting.
[0014] As a preferred technical solution, in step S4, the specific steps of using the broken end for positioning include: first, completing the preliminary positioning of the small marine parts at the welding position; then, using the broken end of the bridge structure for positioning and calibration, ensuring that the broken end of the bridge structure falls on the weld line to complete the positioning and calibration of the welding position.
[0015] As a preferred technical solution, in step S4, the specific steps of using the broken end for welding include: taking the broken end height of the bridge structure as the weld height reference, welding from the broken end to both sides so that the molten pool naturally covers the broken end.
[0016] As a preferred technical solution, in step S2, when nesting and laying out the screened and grouped small marine parts, smaller small marine parts are arranged at the top of the nesting layout diagram, and larger small marine parts are arranged at the bottom of the nesting layout diagram.
[0017] As a preferred technical solution, in step S3, the cutting equipment used when cutting according to the nesting layout diagram is a laser cutting machine or a plasma cutting machine.
[0018] As a further preferred technical solution, in step S1, the length and width of the screened small marine parts are not greater than the width of the steel frame gap.
[0019] As a preferred technical solution, in step S2, the length of the bridge structure is adjusted according to the gaps between the small marine parts after layout, and the width of the bridge structure is 13 mm.
[0020] As a preferred technical solution, the distance between the connection points at both ends of the bridge structure does not exceed 1 / 2 of the maximum side length of adjacent small marine parts.
[0021] As described above, the present invention has the following beneficial effects:
[0022] (1) The present invention provides a bridge connection and cutting and welding method for small marine parts. By adding a bridge structure between the small marine parts to form an assembly, the small marine parts do not need to be placed on a steel mesh when cutting, and can be directly placed on a steel frame for cutting. This reduces the additional costs caused by welding slag accumulation and frequent replacement of steel mesh, greatly improves production efficiency, and has high economic value.
[0023] (2) The bridge connection and cutting and welding method for small marine parts of the present invention can keep the small marine parts connected after cutting by setting the bridge structure, thereby preventing the small marine parts from falling under the steel frame during the cutting process. As a result, there is no need for manual labor to pick up the small marine parts in a harsh environment, which avoids the time and energy consumed by manual labor in picking up the small marine parts, significantly reduces the labor intensity of construction personnel, solves the problem of manual labor required to pick up small marine parts during cutting, improves work efficiency, and saves personnel costs and material losses. At the same time, by preventing construction personnel from entering under the steel frame to perform operations, the safety hazard of clamping small marine parts in turbid water is eliminated, the work safety of construction personnel is improved, and the safety of the on-site working environment is significantly improved.
[0024] (3) A bridge connection and cutting welding method for small marine parts of the present invention,
[0025] By setting the bridge structure at the welding edge of the small marine parts, the cutting and welding operation of the assembly is simplified, and it is also convenient to carry it to the prepared welding position, thereby improving production efficiency. At the same time, by directly disconnecting the bridge structure before welding, the welding operation can be carried out directly without additional processing of the broken end of the bridge structure. At the same time, the broken end can also realize the function of assisting the welding positioning of small marine parts, thereby ensuring the stability, continuity and beauty of the welding seam, improving the welding positioning accuracy and improving the efficiency of welding installation.
[0026] (4) The present invention provides a bridge connection and cutting and welding method for small marine parts. Small marine parts located in the same pre-welding area and with similar pre-welding positions are screened and grouped, and distributed on the same set of material design drawings in the form of assemblies, so as to optimize the layout. At the same time, the size, shape and setting position of the bridge structure used to constitute the assembly can be flexibly adjusted and optimized, added or deleted. It has strong intelligent adaptability and can be applied to various working conditions, thereby ensuring the reasonable layout of small marine parts on the plate used for set cutting, improving the utilization rate of the plate material, saving production costs, and also providing convenience for subsequent cutting and welding operations, and having high practicality.
[0027] In summary, the method of the present invention can ensure the connection between small marine parts, ensure the overall stability of the assembly after the bridge structure is connected, effectively prevent small marine parts from falling into the gap between steel frames during the cutting process, reduce the drop rate of small marine parts, avoid the risk of manual picking up, and reduce labor costs; at the same time, the method of the present invention not only improves the portability of the assembly, but also makes it easy to disconnect the bridge structure during welding and installation and retain the broken ends for welding positioning, thereby improving the convenience of cutting and welding of various small marine parts. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 The present invention is a schematic diagram of on-site cutting when cutting plates into small marine parts on a steel frame in the prior art.
[0029] Figure 2 This is a schematic diagram of the plate cutting instruction execution state before cutting when the plate is nested without adding a bridge structure in the present invention.
[0030] Figure 3 The diagram is a schematic diagram of the execution state of the plate cutting instruction after adding the bridge structure when the plates are nested when the small marine parts are of the same size in the present invention.
[0031] Figure 4 The diagram is a schematic diagram of the plate cutting instruction execution state after adding a bridge structure when the plate is nested in the case of small marine parts of different sizes in the present invention.
[0032] Figure 5 yes Figure 4 A partially enlarged schematic diagram of the bridge structure at point A in the middle.
[0033] Figure 6 yes Figure 5 A partial enlarged schematic diagram of the bridge structure after the bridge structure is disconnected before welding.
[0034] Figure 7 yes Figure 4 A partial enlarged schematic diagram of the bridge structure at B after the bridge structure is disconnected before welding.
[0035] Figure 8 It is a schematic structural diagram of a single small marine part selected for fillet welding in the present invention.
[0036] Figure 9 It is a schematic diagram of the installation position of small marine parts provided with a bridge structure in the present invention.
[0037] Among them, the specific descriptions of the accompanying figures are as follows: 1. Bridge structure; 11. Broken end; 2. Small marine parts; 21. Welding edge; 22. Free edge; 23. Arc striking point; 3. Assembly; 4. Plate; 5. Steel frame; 51. Steel frame gap. DETAILED DESCRIPTION
[0038] In order to better understand the purpose, structure and function of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0039] In the description of the present invention, it should be noted that the positional relationships indicated by terms such as “longitudinal”, “transverse”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” cited in this specification are based on the positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0040] Example
[0041] This embodiment provides a method for connecting and welding a bridge for small marine parts, comprising the following steps:
[0042] S1. Screening the small marine parts 2 to be prepared for nesting according to the width of the steel frame gap 51, and grouping the screened small marine parts 2 according to the locations of the areas to be welded.
[0043] S1-1. Screen out small marine parts 2 whose length and width are no greater than the width of the steel frame gap 51. In this embodiment, the steel frame 5 is a steel platform, the steel frame gap 51 is 150 mm, and the steel frame 5 is 320 mm tall. Among the patching parts on the hull structure design drawings, the small marine parts 2 screened out have lengths and widths no greater than 150 mm. In other preferred embodiments, if the width of the steel frame gap 51 is a, screen out small marine parts 2 with lengths and widths ≤ a + 50 mm. This reserve further reduces the risk of small marine parts 2 slightly larger than the steel frame gap 51 accidentally falling into the steel frame gap 51 due to potential vibration during cutting.
[0044] S1-2. The screened small marine parts 2 are first differentiated based on whether the prepared welding areas are the same, and then further differentiated based on whether the prepared welding positions are close, and the small marine parts 2 located in the same prepared welding area and with close welding positions are grouped into the same group.
[0045] S2, such as Figures 2 to 4 As shown, nesting software is used to perform nesting layout on the nesting layout diagram for the screened and grouped small marine parts 2. Specifically, during the layout process, a bridge structure 1 is set between the welding edges 21 of the small marine parts 2, and the specific setting position and size of the bridge structure 1 for connecting the small marine parts 2 are determined according to the size and shape of the small marine parts 2. Thus, by setting the bridge structure 1, the small marine parts 2 located in the same preparatory welding area and with similar preparatory welding positions are formed into an assembly 3, and the length of the side edge of the assembly 3 parallel to the width direction of the steel frame gap 51 is made to exceed the width of the steel frame gap 51.
[0046] S2-1. When laying out the nesting, evenly distribute the screened and grouped patterns of the small marine parts 2 on the nesting layout, and ensure that the welding edges 21 of two adjacent patterns of the small marine parts 2 to be connected by the bridge structure 1 to form the assembly 3 are arranged relatively parallel; wherein, the welding edges 21 are the side edges of the small marine parts 2 used for welding to the hull structural members.
[0047] In another preferred embodiment, when the screened and grouped small marine parts 2 are nested and laid out, the larger small marine parts 2 are nested first, and then the smaller small marine parts 2 are nested, wherein the smaller small marine parts 2 are arranged in the upper part of the nesting layout diagram, and the larger small marine parts 2 are arranged in the lower part of the nesting layout diagram. By first nesting the larger parts to determine the approximate layout framework, and then arranging the smaller parts in the remaining space, the plate 4 material can be more fully utilized, material waste can be reduced, and the cut small marine parts 2 can be easier to remove from the plate 4; at the same time, the arc starting point 23 for the cutting starting point is set at the cutting corner of the largest small marine part 2 in the same assembly 3, to ensure the stability of the cutting and improve the overall cutting efficiency.
[0048] S2-2. Install a bridge structure 1 between adjacent, screened and grouped patterns of small marine parts 2 to connect them to form a pattern of an assembly 3, comprising at least two independent small marine parts 2, until the length of one side of the assembly 3 parallel to the width of the steel frame gap 51 exceeds the width of the steel frame gap 51. In practice, the bridge structure 1 is first installed so that at least one side of the assembly 3, in either the length or width direction, exceeds the width of the steel frame gap 51. Then, the direction of the side exceeding the width of the steel frame gap 51 is adjusted to align with the distribution direction of the steel frame gap 51.
[0049] In the design phase, the individual small marine parts 2 of different sizes selected in step S1 are drawn separately, and the free edges 22 and welding edges 21 of the small marine parts 2 are confirmed for subsequent nesting layout. Figure 8 As shown, taking one of the small marine parts 2 for double-sided fillet welding as an example, the small marine part 2 has two welding edges 21 on which the bridge structure 1 can be set; in the subsequent nesting layout, the bridge structure 1 can be set on any one of the welding edges 21 of the small marine part 2, or on both welding edges 21 at the same time, and no bridge structure 1 is set on the free edge 22. Preferably, when preparing to set the bridge structure 1 on both welding edges 21 of the small marine part 2 for double-sided fillet welding, as shown in FIG. Figure 4 As shown in the small marine parts 2 numbered ⑦, ⑨, and ⑩, the small marine parts 2 are distributed at the corners of the assembly 3 so as to connect the small marine parts 2 located in the front and rear.
[0050] The connection position of the bridge structure 1 can be flexibly adjusted along the weld edge 21 of the small marine component 2 based on the welding method used, accommodating different cutting and welding requirements. Specifically, when the small marine component 2 is used for fillet welding, the bridge structure 1 is positioned near the corner between the weld edge 21 and another weld edge 21 of the same small marine component 2. When the small marine component 2 is used for flat welding, the bridge structure 1 is positioned at the midpoint of the weld edge 21. Furthermore, the shape of the bridge structure 1 can be flexibly adjusted based on the gap 51 between adjacent small marine components 2 on the nesting layout. In this embodiment, the bridge structure 1 is rectangular and the two ends of the bridge structure 1 are respectively located on the relatively parallel welding edges 21 of adjacent small marine parts 2. The bridge structure 1 is perpendicular to the welding edges 21 of the small marine parts 2, and the setting directions between the two adjacent bridge structures 1 are perpendicular, thereby ensuring the stability of the bridge connection structure; the assembly 3 connected by the bridge structure 1 has at least one side with a side length greater than 200mm, and 200mm is equivalent to the length of an adult's palm, thereby effectively preventing the small marine parts 2 from falling under the steel frame 5 with a gap 51 of 150mm during the cutting process, thereby reducing the drop rate of the small marine parts 2 , avoiding the risk of manual picking and reducing labor costs. At the same time, it can also improve the portability of the assembly 3 and facilitate the welding and installation of small marine parts 2 in the same welding area; wherein, the width of the bridge structure 1 is 13 mm, so that it is easy to disconnect the bridge structure 1 and retain the broken end 11 for welding positioning during subsequent welding and installation; the length of the bridge structure 1 is determined and dynamically adjusted according to the gap 51 between the welding edges 21 of the patterns of two adjacent small marine parts 2 to be prepared for the bridge, and the spacing between the connection points at both ends of a single bridge structure 1 does not exceed 1 / 2 of the maximum side length of the adjacent small marine parts 2. Preferably, as Figure 5 As shown, in step S2-1, the distance between the welding edges 21 of two adjacent small marine parts 2 is adjusted to 13 mm, so that the length of the bridge structure 1 is also 13 mm. After the subsequent flame cutting, the loss is 5 mm, and the 4 mm broken ends 11 are retained on both sides of the bridge structure 1. Figure 6 In other embodiments, when the gap 51 between the welded edges 21 of adjacent small marine parts 2 grouped in the same assembly 3 on the nesting layout diagram is too large, the shape of the portion to be disconnected on the bridge structure 1 can be V-shaped. This not only improves the connection strength between the small marine parts 2 in the assembly 3, but also allows the turning points at both ends of the V-shape to quickly determine the length of the two ends 11 to be retained on the bridge structure 1.
[0051] S3. After the nesting layout is completed, according to the nesting design drawing of the plate 4, CNC cutting technology is used to cut according to the arc starting line and cutting path set in the drawing to obtain a plurality of assemblies 3 with bridge structures 1.
[0052] S3-1. First, the nesting layout diagram provided with the bridge structure 1 connection is imported into the cutting equipment, and the cutting equipment is not limited to a laser cutting machine or a plasma cutting machine. Through the high-precision operation and real-time monitoring of the cutting equipment, the dimensional accuracy of the small marine parts 2 after cutting and the stable connection of the bridge structure 1 can be ensured. At the same time, the material waste caused by cutting errors can be reduced and the cutting quality can be improved.
[0053] S3-2. Then, the arc striking point 23 is used as the starting point, and the outer contour of the assembly 3 is used as the cutting path to move and cut the assembly 3 provided with the bridge structure 1, thereby forming the small marine parts 2 in the same prepared welding area and with similar welding positions into an assembly 3 that is easy to carry, so that the small marine parts 2 in the cut assembly 3 remain connected, thereby preventing the small marine parts 2 from falling into the gap 51 of the steel frame during the cutting process.
[0054] After cutting is completed, the assembly 3 connected to the bridge structure 1 is moved to the corresponding preparatory welding area. When welding and installing at the welding location, the bridge structure 1 is disconnected from the assembly 3 to obtain the required small marine component 2. The cross-section of the broken end 11 of the bridge structure 1 can be directly used for welding without additional processing. The broken end 11 is used to assist in correcting the welding position. The welding edge 21 of the broken end 11 is then welded to other components of the hull structure. To further improve dimensional accuracy and surface quality, the cut assembly 3 can be inspected using high-precision measuring tools after cutting and forming in step S3.
[0055] S4-1. The cut assembly 3 is moved to the corresponding welding work area and carried to the preparatory welding position by the construction personnel. Before welding, the bridge structure 1 is separated in sequence by flame cutting using a cutting tool, so that the assembly 3 is quickly separated into independent small marine parts 2 for subsequent assembly and use. In this embodiment, the gas cutting process in flame cutting is utilized, and the cutting tool is an oxyacetylene cutting torch. The bridge structure 1 is cut and separated from the center, so that the bridge structure 1 retains 4mm broken ends 11 on both sides after cutting for welding positioning. The broken ends 11 of the bridge structure 1 can be directly welded and used without polishing. Figure 6 and Figure 7 As shown, the broken end 11 of the bridge structure 1 can also serve as a reference for the weld seam height during welding, improving installation efficiency and reducing the accumulation of errors during manual welding positioning. In other embodiments, the broken end 11 of the bridge structure 1 can be further formed into a groove structure that meets the requirements of flat welding or fillet welding during the flame cutting process to improve welding accuracy.
[0056] S4-2. First, complete the preliminary positioning of the small marine component 2 at the welding location. Then, use the broken end 11 of the bridge structure 1 for positioning calibration. Finally, using the height of the broken end 11 of the bridge structure 1 remaining after the separation operation as the height reference for weld formation, welding is performed from the broken end 11 of the bridge structure 1 in both directions. During the welding process, the broken end 11 of the bridge structure 1 is covered by the weld pool, eliminating the need for additional grinding during the separation operation of the bridge structure 1 in step S4-1. This not only improves the welding positioning efficiency of the small marine component 2, but also saves welding preparation time.
[0057] In this embodiment, if Figure 9 As shown, taking a small marine part 2 for bilateral fillet welding as an example, the small marine part 2 is arranged on one side of the ball head of the bulb flat steel, and the longitudinal welding edge 21 is welded to the bulb flat steel, and the transverse welding edge 21 is welded to the transverse bone, thereby forming a patch plate for the longitudinal bone. Specifically, the small marine part 2 is first placed on the side of the bulb flat steel located on one side of the ball head, and the surface of the small marine part 2 is fitted to the longitudinal frame surface; then, the position of the small marine part is fine-tuned. When the small marine part 2 is provided with a bridge structure 1 on both welding edges 21 in step S2, ensure that the broken end 11 on the longitudinal welding edge 21 of the small marine part 2 and the broken end 11 on the transverse welding edge 21 of the small marine part 2 both fall on the prepared weld line of the bilateral fillet weld. When the small marine part 2 is provided with a bridge structure 1 on only one welding edge 21 in step S2, first ensure that the broken end 11 of the small marine part 2 falls on the prepared weld line of the bilateral fillet weld, and then ensure that the end point on the other welding edge 21 of the small marine part 2 close to the broken end 11 also falls on the prepared weld line of the bilateral fillet weld, thereby completing the positioning of the welding position.
[0058] In other embodiments, taking a small marine part 2 for flat welding as an example, a positioning point is drawn at the position of the corresponding broken end 11 on the welding edge of the hull structure according to the welding position of the small marine part 2 and the position of the broken end 11 on the small marine part 2. Here, it is assumed that the broken end 11 of the small marine part 2 in step S2 is set at the midpoint of the welding edge on the small marine part 2. Therefore, the positioning point is drawn at the midpoint of the prepared weld line on the welding edge of the hull structure. After the broken end 11 on the small marine part 2 is aligned with the positioning point, the angle between the small marine part and the hull structure is adjusted with the broken end 11 as a fulcrum, while ensuring that the distance between the two sides of the broken end 11 and the welding edge of the hull structure is consistent, thereby completing the positioning of the welding position.
[0059] The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the present invention. It will be apparent to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.
Claims
1. A method for bridging, connecting and cutting and welding small marine parts, characterized in that: The following steps are involved: S1. Screening the small marine parts (2) to be prepared for nesting according to the width of the steel frame gap (51), and grouping them according to the area positions to be prepared for welding; S2. Perform nesting layout on the screened and grouped marine small parts (2). On the nesting layout diagram, a bridge structure (1) is provided on the welding edge (21) of the marine small parts (2), so that the marine small parts (2) located in the same prepared welding area and with similar prepared welding positions form an assembly (3), and the length of one side of the assembly (3) parallel to the width direction of the steel frame gap (51) exceeds the width of the steel frame gap (51); S3, after completing the nesting layout, cutting is performed according to the nesting layout diagram to obtain an assembly (3) provided with a bridge structure (1); S4. After the cutting is completed, the assembly (3) provided with the bridge structure (1) is moved to the corresponding preparatory welding area. When welding and installing at the welding position, the bridge structure (1) on the assembly (3) is disconnected to obtain an independent small marine component (2), and the broken end (11) of the bridge structure (1) located at the welding edge (21) of the small marine component (2) is retained. Finally, the broken end (11) is used to perform positioning and welding operations.
2. A method for bridging connection and cutting welding of small marine parts according to claim 1, characterized in that: In step S4, the bridge structure (1) on the assembly (3) is cut off by flame cutting.
3. A method for bridging connection and cutting welding of small marine parts according to claim 2, characterized in that: In step S4, the specific steps of cutting the bridge structure (1) on the assembly (3) by flame cutting include: flame cutting and separating the bridge structure (1) from the center of the bridge structure (1), so that 4 mm broken ends (11) are retained on both sides of the bridge structure (1) after flame cutting.
4. A method for bridging connection and cutting welding of small marine parts according to claim 1, characterized in that: In step S4, the specific steps of using the broken end (11) for positioning include: first, completing the preliminary positioning of the small marine part (2) at the welding position; then, using the broken end (11) of the bridge structure (1) for positioning and calibration, ensuring that the broken end (11) of the bridge structure (1) falls on the prepared weld line, and completing the positioning and calibration of the welding position.
5. A method for bridging connection and cutting welding of small marine parts according to claim 1, characterized in that: In step S4, the specific steps of performing welding operation using the broken end (11) include: taking the height of the broken end (11) of the bridge structure (1) as the weld height reference, welding from the broken end (11) to both sides, so that the molten pool naturally covers the broken end (11).
6. A method for bridging connection and cutting welding of small marine parts according to claim 1, characterized in that: In step S2, when nesting and typesetting the screened and grouped small ship parts (2), the smaller small ship parts (2) are arranged at the upper part of the nesting layout diagram, and the larger small ship parts (2) are arranged at the lower part of the nesting layout diagram.
7. A method for bridging connection and cutting welding of small marine parts according to claim 1, characterized in that: In step S3, the cutting equipment used for cutting according to the nesting layout diagram is a laser cutting machine or a plasma cutting machine.
8. A method for bridging connection and cutting and welding of small marine parts according to any one of claims 1 to 7, characterized in that: In the step S1, the length and width of the selected small marine parts (2) are not greater than the width of the steel frame gap (51).
9. A method for bridging connection and cutting welding of small marine parts according to claim 8, characterized in that: In step S2, the length of the bridge structure (1) is adjusted according to the gaps (51) between the small marine parts (2) after layout, and the width of the bridge structure (1) is 13 mm.
10. A method for bridging connection and cutting welding of small marine parts according to claim 9, characterized in that: The spacing between the connection points at both ends of the bridge structure (1) does not exceed 1 / 2 of the maximum side length of adjacent small marine parts (2).