Segmented thin plate construction method

Abstract

The invention discloses a thin plate segmented construction method which comprises the steps that S1, a jig frame is manufactured, jig frame braces are fixedly arranged on the side faces of the top ends of part of jig frame stand columns, and the top ends of the jig frame braces and the top ends of the jig frame stand columns are located on the same horizontal plane; s2, the segmented main deck is hoisted to a jig frame, and the main deck is assembled and welded; s3, hoisting the enclosure bulkhead to a main deck on the jig frame, and assembling and welding the enclosure bulkhead to the main deck; s4, fire work back burning is conducted on the enclosure bulkhead; and S5, the thin plate sections are placed on the lengthened portal. According to the building method, the possibility of deformation of the thin plate can be reduced in each step, so that the fire work is reduced, the workload of workers is reduced, the production efficiency is also improved, and the ship production period is shortened.

Description

Technical Field

[0001] The present application relates to the technical field of shipbuilding, and in particular to a thin plate segmented construction method. Background Art

[0002] The main hull material of a ship is steel plate. Shipyards usually use thin plates with a thickness of less than 12mm to assemble sections to reduce the weight of the ship as much as possible, effectively reduce fuel consumption during ship operation, and reduce environmental pollution to a certain extent. Secondly, thin plates have good plasticity. They can be processed according to the complex shape design of the ship, making it convenient to manufacture various streamlined hull structures, which is conducive to reducing resistance during navigation and increasing navigation speed. In addition, using thin plates to assemble sections can reduce the overall production cost of the ship, increase the utilization rate of the ship's internal space, make the layout of the ship more reasonable, and be able to load more cargo or provide a more comfortable riding environment.

[0003] In the prior art, thin plates are prone to deformation during the thin plate segment construction process because the steel plate is too thin. A large amount of pyrotechnics is required during the assembly and loading stage of the thin plate segments, which not only increases the workload of the staff and reduces production efficiency, but also prolongs the ship production cycle. Summary of the invention

[0004] In view of the defects existing in the prior art, the present application provides a thin plate segmented construction method to solve the technical problems in the prior art such as heavy workload for staff, low production efficiency and extended ship production cycle caused by the easy deformation of thin plates during the Boban segmented construction process.

[0005] In order to achieve the purpose of the above application, the technical solution provided by this application is as follows:

[0006] A thin plate segmented construction method comprises the following steps:

[0007] S1. Manufacturing a tire frame, fixing a tire frame tie rod on the top side of some tire frame columns, and the top of the tire frame tie rod is at the same level as the top of the tire frame column;

[0008] S2. Hoist the segmented main deck to the frame and weld the main deck;

[0009] S3. Hoist the enclosure wall to the main deck on the frame, and weld the enclosure wall to the main deck;

[0010] S4, pyrotechnic back burning of the surrounding wall;

[0011] S5. Place the thin plate segments on the extended portal frame.

[0012] In one embodiment, in step S1, tire frame tie rods are arranged on the top side of tire frame columns at the edge of the tire frame, and tire frame tie rods are also fixedly arranged on the top side of some tire frame columns inside the tire frame.

[0013] In one embodiment, the tire frame tie rods inside the tire frame are arranged along the length or width of the ship, and the intervals between the tire frame tie rods inside the tire frame are less than or equal to two meters.

[0014] In one embodiment, step S2 specifically comprises:

[0015] S21, after hoisting the segmented main deck to the tire frame, a plurality of square metal plates are arranged between the tire frame and the main deck, the metal plates are welded to the main deck, the top of the tire frame is welded to the metal plates, and the height of the tire frame with the metal plates welded to the top is adjusted so that the height of the metal plates and the top of the tire frame tie rod are at the same level;

[0016] S22. Check the flatness of the main deck. If there is obvious warping, make local corrections to the warped part.

[0017] S23. Install and weld the main deck.

[0018] In one embodiment, the size of the metal plate in step S21 is 100*100*10mm, and a metal plate is arranged every 2 to 3 meters inside the tire frame, and a metal plate is arranged every 1 meter at the edge of the tire frame; in step S22, the warped part is corrected by pyrotechnics or iron pressing; in step S23, the main deck is welded by FAB welding. When the steel assembled on the main deck is a ball flat steel or an angle steel, the tack weld is welded on the side facing the ball head. The tack weld is welded every 300 to 500 mm for a length of 30 to 50 mm. When welding the fillet welds of the steel, the fillet welds of the steel are welded at intervals. The fillet welds on the back side of the ball are burned first, and then the fillet welds on the side of the ball head are burned. The same fillet weld is welded from the middle to both ends.

[0019] In one embodiment, in step S3, before hoisting the enclosure wall, the channel steel is fixed on the enclosure wall; if multiple enclosure walls need to be spliced, a dressing code is set at the top of the butt seam of the enclosure wall; after hoisting the enclosure wall to the main deck on the frame, the welds between the enclosure walls are welded first, then the butt welds between the enclosure wall and the main deck are welded, and then the fillet welds between the enclosure wall and the main deck are welded.

[0020] In one embodiment, in step S3, a side suction fillet welder or an all-position fillet welder is used for welding when welding the surrounding walls; when welding the welds between the surrounding walls, the upper part of the welds between the surrounding walls is welded first, and then the welds are welded from the middle position of the welds between the surrounding walls to the upper and lower sides, and finally the lower part of the welds between the surrounding walls is welded.

[0021] In one embodiment, in step S4, the range of the pyrotechnic back-burning is from the deck upward to the 1 / 2 height of the enclosure wall, and the same position is back-burned once. The flatness of the enclosure wall is required to be less than or equal to 7 mm in a range of 3 meters in length and less than or equal to 4 mm in a range of 1 meter in length.

[0022] In one embodiment, in step S5, after the thin plate segments are separated from the tire frame, the thin plate segments are placed on an extended portal frame whose length exceeds the length of the thin plate segments.

[0023] In one embodiment, the length of the extended gantry is 13.8 meters.

[0024] Compared with the prior art, this application has at least the following beneficial effects:

[0025] The thin plate segment construction method in the present application firstly provides a tire frame tie rod in the manufacturing of the tire frame, so that the contact between the tire frame and the thin plate is changed from the contact between the top of the tire frame and the surface in the prior art to the contact between the tire frame tie rod and the surface, thereby reducing the deformation of the thin plate and the tire frame when the thin plate segment is constructed on the tire frame; when the main deck is welded on the tire frame, a plurality of square metal plates are provided between the tire frame and the main deck, thereby reducing the spot welding between the tire frame columns and the main deck, and maintaining the integrity of the thin plate as much as possible, and the warped part is corrected before welding the main deck, and when welding the main deck, a certain welding method is used to ensure the welding accuracy; when welding the surrounding wall, the channel steel is first fixed before the surrounding wall is hoisted, and a dressing code is provided at the top of the butt joint of the surrounding wall. When welding the weld between the surrounding wall and the deck, a certain welding method is used to reduce the deformation of the surrounding wall, and then the surrounding wall is pyrotechnically burned to reduce the deformation of the surrounding wall again; the thin plate segment is placed on the extended portal frame to reduce the deformation of the segment during the shelving period. The construction method in the present application can reduce the possibility of deformation of the thin plate in each step, thereby reducing the pyrotechnic operation, reducing the workload of the staff, improving the production efficiency, and shortening the ship production cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the process of the thin plate segmented construction method in the embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described below by means of specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present application.

[0028] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0029] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms and should not be understood as indicating or implying relative importance. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0030] In the description of this application, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0031] In order to better understand the technical solution of the present application, the present application is described in detail below with reference to the accompanying drawings.

[0032] like Figure 1 The present embodiment provides a method for constructing a thin plate in sections, comprising the following steps:

[0033] S1. Manufacturing a tire frame, fixing a tire frame tie rod on the top side of some tire frame columns, and the top of the tire frame tie rod is in the same horizontal plane as the top of the tire frame column.

[0034] Fixing the tire frame tie rods on the top side of the tire frame column can change the contact between the tire frame and the thin plate from the contact between the top of the tire frame and the surface in the prior art to the contact between the tire frame tie rods and the surface, that is, from point-to-surface contact to line-to-surface contact, thereby reducing the deformation of the thin plate and the tire frame when the thin plate segment is built on the tire frame. In this embodiment, the tire frame tie rods are set on the top side of the tire frame column at the edge of the tire frame, and the top side of some tire frame columns inside the tire frame are also fixedly set. In order to avoid the tire frame tie rods hindering the walking of the staff, the tire frame tie rods inside the tire frame are set along the length or width of the ship, and the interval between the tire frame tie rods inside the tire frame is less than or equal to two meters.

[0035] S2. Hoist the segmented main deck to the frame and weld the main deck.

[0036] S2 specifically includes: S21. After hoisting the segmented main deck to the tire frame, a plurality of square metal plates are arranged between the tire frame and the main deck. The metal plates are welded to the main deck, and the top of the tire frame is welded to the metal plates. The height of the tire frame with the metal plates welded to the top is adjusted so that the height of the metal plates and the top of the tire frame tie rod are on the same horizontal plane. In this embodiment, the size of the metal plate is 100*100*10mm. One metal plate is arranged every 2 to 3 meters inside the tire frame, and one metal plate is arranged every 1 meter at the edge of the tire frame. By arranging the metal plate, not only can the thin plate be stably fixed on the tire frame, but also the spot welding of the tire frame column and the main deck can be reduced, so as to maintain the integrity of the thin plate as much as possible, and reduce the workload of disassembling the spot welding when the tire frame and the thin plate segments are separated later;

[0037] S22. Check the flatness of the main deck. If there is obvious warping, perform local correction on the warped part. In this embodiment, the warped part is corrected by pyrotechnic correction method or iron pressing method.

[0038] S23. Install and weld the main deck. In this embodiment, the FAB (Faithful Alignment and Bonding) welding method is used to install and weld the main deck to reduce the workload of workers and improve welding efficiency and welding quality. When the steel section assembled on the main deck is a bulb flat steel or angle steel, the tack weld is welded on the side facing the ball head. The tack weld is welded 30 to 50 mm long every 300 to 500 mm to ensure that the tack weld is firmly welded. When welding the fillet welds of the steel section, the fillet welds of the steel section are welded at intervals. The fillet welds on the side of the ball back are burned first, and then the fillet welds on the side of the ball head are burned. When welding the same fillet weld, it is welded from the middle to both ends to ensure the welding accuracy. In this example, in order to reduce the thermal shrinkage deformation of the steel section fillet weld during the welding process, an automated equipment fillet welding machine is used to weld the steel section fillet welds.

[0039] S3. Lift the enclosure wall to the main deck on the frame, and weld the enclosure wall to the main deck.

[0040] Before hoisting the enclosure wall, fix the channel steel on the enclosure wall to reduce the deformation of the enclosure wall during subsequent hoisting and welding. In this embodiment, multiple enclosure walls need to be spliced ​​together, and a dressing code is set at the top of the butt joint of the enclosure wall to prevent the edge of the enclosure wall from deforming. After hoisting the enclosure wall to the main deck on the frame, first weld the welds between the enclosure walls, then weld the butt welds between the enclosure wall and the main deck, and then weld the fillet welds between the enclosure wall and the main deck. When welding fillet welds, first weld the vertical fillet welds, then burn the flat fillet welds.

[0041] In this embodiment, a side suction fillet welder or an all-position fillet welder is used for welding when welding the enclosure walls, so as to reduce the workload of workers and improve welding efficiency and welding quality. When welding the weld between the enclosure walls, the upper part of the weld between the enclosure walls is welded first, then welded from the middle position of the weld between the enclosure walls to the upper and lower sides, and finally welded the lower part of the weld between the enclosure walls. The upper part of the weld between the enclosure walls refers to 300 mm downward from the upper end of the weld.

[0042] S4. Carry out pyrotechnic back burning on the surrounding wall.

[0043] After all the welding work is completed on the thin plate groups, the outer wall of the enclosure is pyrotechnically burned to reduce the deformation of the enclosure. In this embodiment, the range of the pyrotechnical burning is from the deck to the 1 / 2 height of the enclosure. The same position is pyrotechnically burned once. The flatness of the enclosure requires that the unevenness within a range of 3 meters in length is less than or equal to 7mm, and the unevenness within a range of 1 meter in length is less than or equal to 4mm.

[0044] S5. Place the thin plate segments on the extended portal frame.

[0045] After the thin plate segments are separated from the tire frame, the thin plate segments are placed on an extended door frame whose length exceeds the length of the thin plate segments to reduce deformation of the segments during storage. In this embodiment, the length of the extended door frame is 13.8 meters.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the application can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present application, which should be included in the scope of the technical solution for protection in the present application.

Claims

1. A method for constructing a thin plate in sections, characterized in that: The following steps are involved: S1. Manufacturing a tire frame, fixing a tire frame tie rod on the top side of some tire frame columns, and the top of the tire frame tie rod is on the same horizontal plane as the top of the tire frame column; S2. Hoist the segmented main deck to the frame and weld the main deck; S3. Hoist the enclosure wall to the main deck on the frame, and weld the enclosure wall to the main deck; S4, pyrotechnic back burning of the surrounding wall; S5. Place the thin plate segments on the extended portal frame.

2. The thin plate segmented construction method according to claim 1, characterized in that: In step S1, tire frame tie rods are arranged on the top side surfaces of tire frame columns at the edge of the tire frame, and tire frame tie rods are also fixedly arranged on the top side surfaces of some tire frame columns inside the tire frame.

3. The thin plate segmented construction method according to claim 2, characterized in that: The tire frame braces inside the tire frame are arranged along the length or width of the ship, and the intervals between the tire frame braces inside the tire frame are less than or equal to two meters.

4. The thin plate segmented construction method according to claim 1, characterized in that: Step S2 specifically includes: S21, after hoisting the segmented main deck to the tire frame, a plurality of square metal plates are arranged between the tire frame and the main deck, the metal plates are welded to the main deck, the top of the tire frame is welded to the metal plates, and the height of the tire frame with the metal plates welded to the top is adjusted so that the height of the metal plates and the top of the tire frame tie rod are at the same level; S22. Check the flatness of the main deck. If there is obvious warping, make local corrections to the warped part. S23. Install and weld the main deck.

5. The thin plate segmented construction method according to claim 4, characterized in that: In step S21, the size of the metal plate is 100*100*10mm, and one metal plate is arranged every 2 to 3 meters inside the tire frame, and one metal plate is arranged every 1 meter at the edge of the tire frame; in step S22, the warped part is corrected by pyrotechnics or iron pressing correction; in step S23, the main deck is welded by FAB welding method. When the steel assembled on the main deck is a ball flat steel or an angle steel, the tack weld is welded on the side facing the ball head. The tack weld is welded every 300 to 500 mm for a length of 30 to 50 mm. When welding the fillet welds of the steel, the fillet welds of the steel are welded at intervals. The fillet welds on the back side of the ball are burned first, and then the fillet welds on the side of the ball head are burned. When welding the same fillet weld, it is welded from the middle to both ends.

6. The thin plate segmented construction method according to claim 1, characterized in that: In step S3, before hoisting the enclosure wall, the channel steel is fixed on the enclosure wall; if multiple enclosure walls need to be spliced, a dressing code is set at the top of the butt joint of the enclosure wall. After hoisting the enclosure wall to the main deck on the frame, the welds between the enclosure walls are welded first, then the butt welds between the enclosure wall and the main deck are welded, and then the fillet welds between the enclosure wall and the main deck are welded.

7. The thin plate segmented construction method according to claim 6, characterized in that: In step S3, a side suction fillet welder or an all-position fillet welder is used for welding when welding the surrounding walls; when welding the welds between the surrounding walls, the upper part of the welds between the surrounding walls is welded first, then welded from the middle position of the welds between the surrounding walls to the upper and lower sides, and finally welded the lower part of the welds between the surrounding walls.

8. The thin plate segmented construction method according to claim 1, characterized in that: In step S4, the range of pyrotechnic back-burning is from the deck upward to the 1 / 2 height of the enclosure wall, and the same position is back-burned once. The flatness of the enclosure wall is required to be less than or equal to 7mm in a range of 3 meters in length and less than or equal to 4mm in a range of 1 meter in length.

9. The thin plate segmented construction method according to claim 1, characterized in that: In step S5, after the thin plate segments are separated from the tire frame, the thin plate segments are placed on an extended portal frame whose length exceeds the length of the thin plate segments.

10. The thin plate segmented construction method according to claim 1, characterized in that: In step S5, the length of the extended gantry is 13.8 meters.

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