A container ship cargo hold guide rail and a method for installing the guide rail without margin.

Abstract

This invention discloses a container ship cargo hold guide rail and a zero-margin installation method for the guide rail, belonging to the technical field of cargo hold guide rail installation. It includes a longitudinal girder web, with two panels symmetrically fixedly connected to its top and bottom. Each panel includes an upper panel and a lower panel, and guide rail connecting plates arranged at intervals are fixedly connected to the opposing sides of both panels. Guide rails are symmetrically fixedly connected to the opposing sides of the guide rail connecting plates. A platform is fixedly connected to one side of the longitudinal girder web. This invention limits the welding deformation of the compartment sections by changing the connection form between the platform and the longitudinal girder web panels, and ensures the manufacturing accuracy of the compartment sections by controlling the welding sequence through a specific welding process. This achieves the zero-margin installation effect of the container ship cargo hold guide rail. By optimizing the process flow and controlling the deformation during the compartment section manufacturing process, the installation accuracy of the guide rail is ensured, realizing zero-margin manufacturing in the initial installation stage of the guide rail and compartment.

Description

Technical Field

[0001] This invention relates to the field of cargo hold guide rail installation technology, specifically to a container ship cargo hold guide rail and a zero-margin installation method for the guide rail. Background Technology

[0002] The installation accuracy of container ship cargo hold guide rails is a crucial indicator of the ship's construction quality. Existing guide rail structures, such as... Figure 3 As shown, the traditional method involves adding allowance to the connecting plate between the compartment section and the guide rail and then cutting and adjusting it. The specific method is as follows:

[0003] Reference Figure 4 A pre-reserved plate 0 is placed on the connecting plate between the compartment section and the guide rail. This pre-reserved plate 0 consists of multiple allowances of about 20mm-30mm. After the various components of the compartment section are cut and assembled in groups, the compartment section is fabricated with the stern (or bow) side of the bulkhead as the base surface. After the compartment section is assembled and welded, the horizontal value of the connecting plate position between the compartment section and the guide rail is measured. The height of each connecting plate is calculated based on the horizontal value, and the excess allowance is cut off. Then the guide rail is hoisted, assembled, and welded.

[0004] In the construction of container ships, most shipyards at home and abroad currently install guide rails by applying allowances on the connecting plates between the compartment sections and the guide rails, as described above. They have not yet applied the construction process of fabricating without allowances and are still stuck at the stage of applying allowances, measuring data, and cutting allowances. This method can be applied to deformation control during the fabrication of container ship compartment sections, reducing cutting and adjustments, improving the installation accuracy of guide rails, shortening the operation cycle, reducing labor intensity, and improving operation efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a container ship cargo hold guide rail and a zero-margin installation method for the guide rail, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a container ship cargo hold guide rail, comprising a longitudinal girder web, wherein two panels are symmetrically and fixedly connected to the top and bottom of the longitudinal girder web, the two panels comprising an upper panel and a lower panel, and guide rail connecting plates arranged at intervals are fixedly connected to the opposing sides of the two panels, guide rails are symmetrically and fixedly connected to the opposing sides of the guide rail connecting plates, and a platform is fixedly connected to one side of the longitudinal girder web.

[0007] One side panel of the platform is discontinuous, with gaps reserved for inserting longitudinal girder panels.

[0008] A method for installing container ship cargo hold guide rails without margin includes the following steps:

[0009] S1. The longitudinal girder web is offset from one side of the two panels to form a non-linear division.

[0010] S2. When cutting the longitudinal girder web and guide rail connecting plate of the compartment section, use cutting equipment for cutting.

[0011] S3. Install the panels on both sides of the longitudinal girder web and install the connecting plates on the panels. After the longitudinal girder web assembly is welded, specify the position of the support points, confirm the straightness of the longitudinal girder web in the front, back, left and right directions, and straighten it according to the requirements and specifications.

[0012] S4. Before the compartment sections are fabricated, the projection lines of each platform and longitudinal girder web structure are drawn on the fabrication plate.

[0013] S5. Set up horizontal fixed piles near the intersections of the longitudinal and transverse girder web structures on each platform to make the upper end of each fixed pile form a horizontal plane.

[0014] S6. The platform and longitudinal girder web structure of the hoisting compartment are aligned with the projection line drawn in S4, and the base surfaces of the two are welded and fixed to the horizontal fixing piles in S5.

[0015] S7. Install the guide rails on one side of the lower panel to ensure that the guide rails are level.

[0016] S8. Install the guide rails on one side of the top panel, ensuring that the guide rails are level and that the guide rails on both sides are consistent in length, width, and height.

[0017] S9. After the guide rail is assembled, first weld the fillet weld between the longitudinal girder web and the panel, then weld the butt joint between the two panels and the platform, and finally weld the fillet weld between the longitudinal girder web and the platform.

[0018] After welding S10 and S9, remove the fixing weld of the horizontal fixed pile in S6.

[0019] As a further preferred embodiment of this technical solution: in S1, the non-linear segmentation form means that the longitudinal girder web is longer than the lower panel and the upper panel is longer than the longitudinal girder web, thereby preparing for deformation control in the subsequent segmented fabrication stage.

[0020] As a further preferred embodiment of this technical solution: in S2, the cutting equipment is a laser cutter or a plasma cutter, thereby ensuring the cutting dimensional accuracy of each relevant component and part.

[0021] As a further preferred embodiment of this technical solution: in S4, when scribing, add a welding shrinkage allowance of 0.3-0.5 mm per meter in both the height and width directions.

[0022] As a further preferred embodiment of this technical solution: in S9, when welding the butt joint between the two panels and the platform, the upper and lower butt joints need to be welded simultaneously.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention can be applied to the zero-margin installation of container ship cargo hold guide rails. By changing the connection form between the compartment segment platform and the longitudinal girder web panel, the welding deformation of the compartment segment is limited. By formulating welding process and controlling welding sequence, the manufacturing accuracy of the compartment segment is ensured, thereby achieving the zero-margin installation effect of container ship cargo hold guide rails. Through optimized process flow, the deformation during the manufacturing process of compartment segments is controlled, thereby ensuring the installation accuracy of the guide rails and effectively realizing zero-margin manufacturing of the guide rails and compartments in the initial installation stage. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a container ship cargo hold guide rail according to the present invention;

[0025] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0026] Figure 3 This is a schematic diagram of the structure of a container ship cargo hold guide rail in the prior art;

[0027] Figure 4 This is a schematic diagram of a structure with reserved allowance on a connecting plate, as used in the prior art.

[0028] In the diagram: 0. Reserved plate; 1. Longitudinal girder web; 2. Panel; 3. Guide rail connecting plate; 4. Guide rail; 5. Platform. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example

[0031] Please see Figures 1-2 The present invention provides a technical solution: a container ship cargo hold guide rail, including a longitudinal girder web 1, two panels 2 are symmetrically fixedly connected to the top and bottom of the longitudinal girder web 1, the two panels 2 include an upper panel and a lower panel, and guide rail connecting plates 3 arranged at equal intervals are fixedly connected to the opposing sides of the two panels 2, guide rails 4 are symmetrically fixedly connected to the opposing sides of the guide rail connecting plates 3 arranged at equal intervals, and a platform 5 is fixedly connected to one side of the longitudinal girder web 1.

[0032] One side panel of platform 5 is discontinuous, with a gap of the same width as the longitudinal girder panel reserved.

[0033] A method for installing container ship cargo hold guide rails without margin includes the following steps:

[0034] S1. The longitudinal girder web 1 is offset from one side of the two panels 2 to form a non-linear division.

[0035] S2. When cutting the longitudinal girder web 1 and guide rail connecting plate 3 of the compartment segment, a cutting device is used for cutting.

[0036] S3. Install the panels 2 on both sides of the longitudinal girder web 1, and install the connecting plates 3 on the panels 2; after the longitudinal girder web 1 group assembly is welded, specify the position of the support points, confirm the straightness of the longitudinal girder web 1 in the front, back, left and right directions, and straighten it according to the requirements and specifications.

[0037] S4. Before the compartments are manufactured in sections, the projection lines of each platform 5 and the longitudinal girder web 1 structure are drawn on the manufacturing plate.

[0038] S5. Set up horizontal fixed piles near the intersection of the longitudinal and transverse structures of each platform 5 and the longitudinal girder web 1 so that the upper end of each fixed pile forms a horizontal plane.

[0039] S6, the platform 5 and longitudinal girder web 1 of the hoisting compartment are aligned with the projection lines drawn in S4, and the base surfaces of the two are welded and fixed to the horizontal fixing piles in S5.

[0040] S7. Install the guide rail 4 on one side of the lower panel to keep the guide rails 4 horizontal.

[0041] S8. Install the guide rail 4 on one side of the top panel, ensuring that each guide rail 4 is horizontal and that the guide rails on both sides are consistent in length, width and height.

[0042] After the S9 and guide rail 4 are assembled, first weld the fillet weld between the longitudinal girder web 1 and the panel 2, then weld the butt joint between the two panels 2 and the platform 5, and finally weld the fillet weld between the longitudinal girder web 1 and the platform 5.

[0043] After welding S10 and S9, remove the fixing weld of the horizontal fixed pile in S6.

[0044] In this embodiment, specifically: in S1, the non-linear segmentation form means that the longitudinal girder web 1 is longer than the lower panel and the upper panel is longer than the longitudinal girder web 1, thereby preparing for deformation control in the subsequent segmented manufacturing stage.

[0045] In this embodiment, specifically: in S2, the cutting equipment adopts a laser machine or a plasma cutting machine to ensure the cutting dimensional accuracy of each related component and part.

[0046] In this embodiment, specifically: in S4, when marking lines, add 0.3-0.5 mm of welding shrinkage per meter in both the height and width directions.

[0047] In this embodiment, specifically: in S9, when welding the joint between the two panels 2 and the platform 5, the upper and lower joints need to be welded simultaneously.

[0048] Working principle or structural principle: The upper panel of platform 5 is made discontinuous, leaving a gap of the same width as the longitudinal girder panel. The longitudinal girder web 1 is staggered with the two panels 2, forming a non-linear segmentation. That is, the longitudinal girder web 1 is longer than the lower panel, and the upper panel is longer than the longitudinal girder web 1. The upper panel is placed in the gap between the platform 5 panels, thus preparing for deformation control in the subsequent segmented manufacturing stage. After the guide rail 4 is assembled, the fillet weld between the longitudinal girder web 1 and the two panels 2 is welded first. At this time, because the upper panel is stuck in the middle of the platform 5 panels, deformation can be well controlled. Then the butt joint between the panel 2 and the platform 5 is welded, with welding on both the top and bottom simultaneously. The longitudinal girder web 1 can play a role in controlling deformation. Finally, the fillet weld between the longitudinal girder web 1 and the platform 5 is welded. By cleverly adjusting the welding sequence, a three-segment stepped end face of the longitudinal girder and a discontinuous platform panel are designed. The interaction force of the structure itself is used to control the accuracy, realizing zero-margin installation of the container ship cargo hold guide rail.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for installing a container ship cargo hold rail with no allowance, characterized in that, a container ship cargo hold rail includes a longitudinal web (1), the top and bottom of the longitudinal web (1) are symmetrically fixedly connected with two panels (2), the two panels (2) include an upper panel and a lower panel, and the repelling sides of the two panels (2) are fixedly connected with spaced-apart rail connecting plates (3), the repelling sides of the rail connecting plates (3) are symmetrically fixedly connected with rails (4) at equal distances, and one side of the longitudinal web (1) is fixedly connected with a platform (5); wherein the side panel of the platform (5) is discontinuous, leaving a gap into which a longitudinal web panel can be placed; and further comprising the following steps: S1. The longitudinal web (1) and one side of the two panels (2) are staggered to form a non-linear division, that is, the longitudinal web (1) is longer than the lower panel, and the upper panel is longer than the longitudinal web (1), thereby preparing for deformation control in the subsequent segmented production stage; S2. When the longitudinal web (1) and the rail connecting plates (3) of the compartment segment are cut, cutting equipment is used for cutting; S3. The panels (2) on both sides of the longitudinal web (1) are installed, and the connecting plates (3) are installed on the panels (2), after the longitudinal web (1) small group assembly welding is completed, the position of the support point is specified, the straightness of the longitudinal web (1) in the front, rear, left and right directions is confirmed, and straightening is performed according to the requirements and specifications; S4. Before the compartment segment is produced, the projection lines of the structure of each platform (5) and longitudinal web (1) are drawn on the production template; S5. Horizontal fixed stakes are provided near the intersection points of each platform (5) and longitudinal web (1) structure, so that the upper ends of each fixed stake form a horizontal plane; S6. The platform (5) and the longitudinal web (1) structure of the compartment segment are hoisted so that they coincide with the positions of the projection lines drawn in S4, and the base surfaces of the two are welded and fixed to the horizontal fixed stakes in S5; S7. The rails (4) on one side of the lower panel are installed so that the rails (4) are kept horizontal; S8. The rails (4) on one side of the upper panel are installed so that the rails (4) are kept horizontal and the rails (4) on both sides are kept consistent in length, width and height; S9. After the rail (4) assembly is completed, the fillet weld between the longitudinal web (1) and the panel (2) is welded first, then the butt joint between the two panels (2) and the platform (5) is welded, and finally the fillet weld between the longitudinal web (1) and the platform (5) is welded; S10. After S9 is completed, the fixed weld of the horizontal fixed stake in S6 is removed.

2. A method of installing a container ship cargo hold rail with no excess material according to claim 1, characterised in that: In S2, the cutting equipment uses a laser machine or a plasma cutting machine, thereby ensuring the cutting size accuracy of each related component and member.

3. A method of installing a container ship cargo hold rail with no excess material as claimed in claim 1, characterised in that: In S4, when drawing lines, add 0.3-0.5mm of welding shrinkage per meter in the height and width directions.

4. A method of installing a container ship cargo hold rail with no excess material as defined in claim 1, wherein: In S9, when welding the butt joint between the two panels (2) and the platform (5), the upper and lower butt joints need to be welded at the same time.

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