A method of installing a heap cone

Abstract

The application relates to the technical field of shipbuilding assembly, in particular to a mounting method of a heeling cone. The method comprises the following steps: mounting a heeling cone backing plate to a predetermined position; drawing a heeling cone positioning installation line on the heeling cone backing plate; providing a heeling cone mounting tool, the heeling cone mounting tool being provided with a center line mark corresponding to the heeling cone positioning installation line; aligning the heeling cone mounting tool with the heeling cone positioning installation line; placing a heeling cone into the aligned heeling cone mounting tool so that the heeling cone is positioned relative to the heeling cone backing plate; performing spot welding fixation on the positioned heeling cone; removing the heeling cone mounting tool, and performing assembly inspection on the heeling cone; and performing welding on the heeling cone and performing inspection after the assembly inspection is qualified. The method can solve the problems that it is difficult to accurately determine the center line and it is required to punch a point on a casting.

Description

Technical Field

[0001] This application relates to the field of shipbuilding and assembly technology, and in particular to a method for installing a cone stack. Background Technology

[0002] Accurate installation of stacking cones is a critical control aspect in container ship construction. Existing stacking cones are typically integral steel castings with linear outer surfaces and lack a flat reference surface suitable for direct measurement or alignment. Traditionally, during installation, manual centering points are marked at the front, rear, left, and right positions of the top of the stacking cone, and these points are then aligned with the positioning lines on the stacking cone pad to complete the installation and positioning of the stacking cone.

[0003] The cone is a solid casting with a linear shape, making it difficult to accurately determine the center line using conventional tools; setting punches on the cone will damage the surface of the casting; the area and position errors of the punches will affect the alignment effect; the diagonal accuracy of the cone after installation is a shipbuilding inspection item, and the existing alignment method is prone to large installation deviations and rework. Summary of the Invention

[0004] Therefore, it is necessary to provide an installation method for a cone that can solve the problem of difficulty in accurately determining the center line and the need to make punch points on the casting.

[0005] To solve the above-mentioned technical problems, this application provides the following technical solution: A method for installing a stacked cone includes the following steps: S1: Install the stack cone pad into the predetermined position; S2: Mark the cone positioning and installation line on the cone pad; S3: Provide a stack cone installation fixture, the stack cone installation fixture having a centerline mark corresponding to the stack cone positioning and installation line; S4: Align the stack cone installation fixture with the stack cone positioning installation line; S5: Place the stack cone into the aligned stack cone mounting fixture to position the stack cone relative to the stack cone pad; S6: Fix the positioned cone by spot welding; S7: Remove the stack cone installation fixture and perform assembly inspection on the stack cone; and S8: After the assembly inspection is passed, the cone is welded and inspected.

[0006] Understandably, by marking the positioning and installation lines on the cone plate and using the cone installation fixture with centerline markings for alignment and positioning, the manual repeated calibration of the cone surface markings can be reduced; there is no need to make punches on the cone casting, which helps to avoid damage to the casting; after the fixture is aligned, spot welding can be completed while maintaining the positioning state, which helps to improve the consistency and installation efficiency of the cone assembly and reduce rework caused by positioning deviations.

[0007] In one embodiment, the stack cone is a one-piece steel casting.

[0008] In one embodiment, the cone positioning installation line includes a positioning line for defining positioning in the length direction of the ship and a positioning line for defining positioning in the width direction of the ship.

[0009] In one embodiment, the stack cone mounting fixture is assembled from four panels.

[0010] In one embodiment, each of the four panels has a vertical center line, which together constitute the center line marker.

[0011] In one embodiment, the panel is an acrylic sheet.

[0012] In one embodiment, aligning the stack cone mounting fixture with the stack cone positioning mounting line includes aligning the centerline marker with the stack cone positioning mounting line.

[0013] In one embodiment, the spot welding is performed while the cone mounting fixture holds the cone in its positioning state.

[0014] In one embodiment, the assembly inspection includes checking the installation position and diagonal accuracy of the stack cone.

[0015] In one embodiment, the inspection includes verifying the installation accuracy of the cone after welding is completed.

[0016] Compared with existing technologies, a new method for installing a cone stacker reduces the need for manual repetitive calibration of the cone stacker surface markings by marking positioning installation lines on the cone stacker plate and using a cone stacker installation fixture with centerline markings for alignment and positioning. It also eliminates the need to punch punches on the cone stacker casting, thus avoiding damage to the casting. After the fixture is aligned, spot welding can be performed while maintaining the positioning state, which helps improve the consistency and installation efficiency of the cone stacker assembly and reduces rework caused by positioning deviations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A field application diagram illustrating the installation method of a stacking cone provided in this application; Figure 2 A top view of the overall structure of a cone stack installation method provided in this application; Figure 3 A top view of a cone stacking fixture for a cone stacking installation method provided in this application; Figure 4 A side view of the cone tooling for a cone installation method provided in this application.

[0019] The component labels are as follows: 1. Cone stack; 2. Cone stack fixture; 21. Panel; 3. Cone stack pad; 4. Positioning and installation line. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0025] Please see Figures 1 to 4 This application provides a method for installing a stacking cone, mainly applied to the stacking cone assembly operation during the construction of container ships. In this application, the stacking cone 1 is a finished steel casting for container ships. Specifically, the stacking cone 1 serves as a basic component for fixing containers in container ships, and the accuracy of its installation position affects the locking reliability of the upper container and the overall loading accuracy of the ship.

[0026] The main dimensions of the cone used in shipbuilding are approximately 100mm in diameter and 54mm in length, classifying it as a small precision casting. Because the cone is cast in one piece, its outer surface has a linear profile. Furthermore, since casting surfaces are typically curved or irregular, there is a lack of a flat reference surface for direct measurement or alignment.

[0027] This application utilizes the positioning installation line 4 pre-marked on the cone plate 3 and the center line mark set on the cone tooling 2. The two work together to complete the alignment and positioning of the cone 1, so that the entire installation process no longer relies on manually setting the punch points on the surface of the cone 1 body, avoiding the problems of surface damage to the casting and unreliable alignment reference caused by punching in the traditional method.

[0028] Before installation begins, the cone pad 3 must first be installed in the designated position. This designated position is usually determined by the general layout requirements in the ship's design drawings. In practice, the cone pad 3 is generally welded or fixed to the corresponding structural frame of the ship's deck or bulkhead. As the direct supporting foundation for the cone 1, it must have a stable supporting surface and reliable connection strength.

[0029] In a specific embodiment, the installation position of the cone-shaped pad 3 can be determined based on the accuracy lines marked on the ship's layout drawing. Accuracy lines are positioning references used to control various components during ship construction, typically including the hull centerline, rib lines, and deck reference lines. Using these accuracy lines, construction personnel can accurately position the cone-shaped pad 3 to the coordinate area specified in the design, ensuring that the pad's installation position remains consistent with the overall ship coordinate system.

[0030] After the cone base plate 3 is fixed in place, the construction personnel need to mark the positioning installation line 4 on the cone base plate 3 for subsequent positioning of the cone 1. This marking operation is completed on the surface of the base plate, which is usually a flat structure with a regular planar outline, making it easy to use a steel ruler, square or laser marking tool for precise marking.

[0031] The positioning installation line 4 provides dual guidance for the installation of the stack cone 1, both in direction and position. Further, the positioning installation line 4 may include a positioning reference line corresponding to the ship's length direction and a positioning reference line corresponding to the ship's beam direction.

[0032] The longitudinal positioning reference line extends along the ship's length and is used to define the fore-and-aft installation position of the stack cone 1 along the ship's length; the transverse positioning reference line extends along the ship's width and is used to define the port-to-port installation position of the stack cone 1 along the ship's width. Together, they form an orthogonal cross-shaped reference system, thereby comprehensively defining the installation direction and position of the stack cone 1.

[0033] Using the aforementioned baseline, construction workers can establish a clear installation coordinate system on the surface of the pad, providing an objective and quantifiable alignment reference for subsequent tool alignment and placement of the cone 1, effectively reducing the risk of installation deviation caused by manual visual inspection and repeated adjustments.

[0034] Subsequently, a cone-shaped fixture 2 is provided. This fixture 2 is a specialized tool used to assist in the rapid and accurate positioning of the cone 1 and the cone base plate 3. In this embodiment, the cone-shaped fixture 2 is formed by assembling four panels 21 together. The four panels 21 are spliced ​​together to form a positioning space that conforms to the outline of the cone 1. This positioning space can restrict the horizontal displacement of the cone 1 after it is placed, thereby determining the position of the cone 1 on the plane of the base plate.

[0035] Specifically, the four panels 21 can be arranged corresponding to the front, rear, left, and right sides of the stacking cone 1, respectively, thereby forming a surrounding positioning of the stacking cone 1 in the circumferential direction. The panels 21 can be assembled through a detachable connection structure to facilitate the disassembly, assembly, and storage of the tooling before and after use.

[0036] Panel 21 can be made of acrylic sheet. Acrylic sheet has the characteristics of high transparency, moderate strength, good processing performance and not easy deformation. It is convenient to draw precise vertical center lines on the surface of panel 21, and it is also beneficial for operators to directly observe the relative positional relationship between the stacking cone 1 and the pad plate through panel 21 during tooling use, thereby improving the intuitiveness and controllability of line operation. Each panel 21 has a vertical center line drawn on its surface. The vertical center line extends along the vertical direction of panel 21, and its position on panel 21 is precisely marked.

[0037] After the four panels 21 are assembled in a predetermined manner to form the cone stacking fixture 2, the vertical center lines on the four panels 21 cooperate with each other in space to jointly form the center line mark of the fixture. This center line mark is the external representation of the overall positioning reference of the fixture, and it has a predetermined spatial correspondence with the positioning installation line 4 marked on the cone stacking pad 3.

[0038] In actual use, first place the assembled stacking cone tool 2 on the installed stacking cone pad 3, and adjust the position of the tool so that the center line mark on the tool corresponds to the positioning installation line 4 marked on the stacking cone pad 3 and complete the alignment.

[0039] In one embodiment, aligning the stacking cone tooling 2 with the positioning installation line 4 on the stacking cone pad 3 specifically includes: aligning the centerline mark of the tooling with the positioning installation line 4 on the stacking cone pad 3 in a top-view projection direction. That is, the operator, using visual inspection or auxiliary measuring tools, moves the centerline mark formed by the vertical centerlines of the four panels 21 of the tooling to a position where it coincides with the crosshair positioning reference line on the pad. This indicates that the tooling has been precisely positioned relative to the stacking cone pad 3.

[0040] Since the relative position between the positioning space of the tooling and the center line mark is predetermined, when the center line mark of the tooling is aligned with the positioning installation line 4 on the pad, the installation position of the positioning space enclosed by the tooling relative to the stacking cone pad 3 is also determined.

[0041] After the tooling and positioning installation line 4 are aligned, the stacking cone 1 is placed into the stacking cone tooling 2. Since the tooling has been precisely positioned relative to the stacking cone pad 3 through its center line mark, when the stacking cone 1 is placed into the positioning space enclosed by the tooling, the stacking cone 1 maintains a predetermined position relative to the stacking cone pad 3 under the constraint of the positioning space.

[0042] At this point, the operator does not need to perform any marking or dotting operations on the surface of the cone 1; the installation position of the cone 1 on the pad can be accurately obtained through the indirect positioning of the tooling. With the cone 1 maintained in the tooling's positioning state, spot welding is performed on the contact area between the cone 1 and the cone pad 3 to form a preliminary connection between the cone 1 and the pad. After spot welding is completed, the cone tooling 2 is removed from the cone pad 3. At this point, the cone 1 is fixed to the pad by spot welding and can independently maintain its installation position.

[0043] The entire operation does not require any punching points on the surface of the cone 1, thus fundamentally avoiding mechanical damage to the casting surface caused by punching operations, including but not limited to indentations, scratches, local deformation, or stress concentration. At the same time, since the outer surface of the cone 1 itself lacks a flat reference surface that can be directly attached to by conventional measuring tools, it is extremely difficult and has a large error in traditional methods to find the center or mark the positioning point on such a surface. However, this application completely bypasses this difficulty by using external tooling to indirectly align the cone 1, significantly reducing the alignment difficulty during the installation process and improving the efficiency and accuracy of the installation operation.

[0044] After the cone 1 is spot-welded in place, it undergoes assembly inspection. Assembly inspection may include checking the installation position and diagonal accuracy of cone 1. After passing inspection, cone 1 is welded according to the relevant welding requirements for shipbuilding, and the installation accuracy is verified after welding is completed.

[0045] For the allowable error of weld leg height, welding sequence, and diagonal for different box types, the confirmed ship design drawings, construction standards, or inspection standards shall prevail.

[0046] After the cone 1 is fixed to the cone base plate 3 by spot welding and the cone tooling 2 has been removed from the installation area, the construction personnel need to inspect the assembled cone 1. A comprehensive check of the initial installation status of the cone 1 is required to determine whether the current installation position meets the design and accuracy requirements, thereby providing a reliable construction basis for the subsequent formal welding process.

[0047] In this embodiment, the assembly inspection may specifically include checking the installation position and diagonal accuracy of the stacking cone 1. Specifically, the installation position check refers to verifying the actual positioning coordinates of the stacking cone 1 on the stacking cone pad 3 to ensure that the positioning deviations of the stacking cone 1 in both the length and width directions are controlled within the design allowable range.

[0048] Since the positioning operation in this application was completed in the early stage by aligning the centerline mark of the cone tooling 2 with the positioning installation line 4 on the cone pad 3, the installation position check can verify the actual effect of the tooling positioning and confirm whether the offset between the center position of the cone 1 and the theoretical design position meets the shipbuilding accuracy standards. The diagonal accuracy check refers to verifying the azimuth angle of the cone 1 or the relative positional relationship of each symmetrical point.

[0049] Specifically, in container ship construction, multiple stacking cones (1) are often installed simultaneously in the same compartment or container bay. These cones (1) must maintain a strict relative positional relationship to ensure the containers can be smoothly positioned and locked. Diagonal accuracy measures the dimensional consistency of adjacent cones (1) in the intersecting direction. Excessive diagonal deviation will prevent the container corner fittings from accurately engaging with the cones (1), leading to container tilting or locking failure. Therefore, checking diagonal accuracy during assembly inspection can effectively predict and eliminate such risks.

[0050] Once the assembly inspection results show that the installation position and diagonal accuracy of the cone 1 meet the design and specification requirements, it is considered to have passed inspection. Passing inspection signifies that the initial positioning and spot welding of the cone 1 have been quality confirmed, and subsequent formal welding procedures can proceed. At this point, construction personnel carry out formal welding on the cone 1 according to the corresponding welding requirements in the shipbuilding industry.

[0051] Spot welding and formal welding differ in function: spot welding is only used to temporarily maintain the relative position of the cone 1 and the backing plate during inspection and subsequent operations, and the weld size is small with limited strength; while formal welding requires the formation of a continuous, full weld with sufficient strength at the connection between the cone 1 and the backing plate to meet the stringent structural strength requirements of the ship during long-term service. Therefore, the process parameters, operating methods, and quality acceptance standards for formal welding must be strictly implemented in accordance with the approved ship design drawings, construction process documents, and inspection standards.

[0052] After all the formal welding of the cone 1 is completed, the installation accuracy of the welded cone 1 needs to be checked. This check is the final dimensional inspection carried out after the heat input has been completed and the weldment has cooled to room temperature. Its purpose is to confirm whether factors such as thermal expansion and contraction or welding deformation during the welding process have had an adverse effect on the installation accuracy of the cone 1.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A method for installing a cone stack, characterized in that, Includes the following steps: S1: Install the cone pad (3) into the predetermined position; S2: Mark the positioning and installation line (4) of the stack cone (1) on the stack cone pad (3); S3: Provide a stacking cone fixture (2), the stacking cone fixture (2) having a centerline mark corresponding to the positioning installation line (4) of the stacking cone (1); S4: Align the stacking cone fixture (2) with the positioning installation line (4) of the stacking cone (1); S5: Place the stacking cone (1) into the aligned stacking cone fixture (2) so that the stacking cone (1) is positioned relative to the stacking cone pad (3); S6: Spot weld the positioned cone (1) in place; S7: Remove the stacking cone fixture (2) and perform assembly inspection on the stacking cone (1); and S8: After the assembly inspection is passed, the stack cone (1) is welded and inspected.

2. The method for installing the cone according to claim 1, characterized in that, The stack cone (1) is an integral steel casting.

3. The method for installing the cone according to claim 1, characterized in that, The positioning installation line (4) of the stack cone (1) includes a positioning line for defining the positioning in the length direction of the ship and a positioning line for defining the positioning in the width direction of the ship.

4. The method for installing the cone according to claim 1, characterized in that, The stacking cone tooling (2) is assembled from four panels (21).

5. The method for installing the cone according to claim 4, characterized in that, Each of the four panels (21) has a vertical center line, which together constitute the center line marker.

6. The method for installing the cone according to claim 4, characterized in that, The panel (21) is an acrylic sheet.

7. The method for installing the cone according to claim 1, characterized in that, Aligning the stacking cone tooling (2) with the positioning installation line (4) of the stacking cone (1) includes aligning the center line mark with the positioning installation line (4) of the stacking cone (1).

8. The method for installing the cone according to claim 1, characterized in that, The spot welding is performed while the stacking cone (1) is in the positioning state of the stacking cone tooling (2).

9. The method for installing the cone according to claim 1, characterized in that, The assembly inspection includes checking the installation position and diagonal accuracy of the stacking cone (1).

10. The method for installing the cone according to claim 1, characterized in that, The inspection includes verifying the installation accuracy of the stacked cone (1) after welding is completed.

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