Shipbuilding method and pcta car carrier

Abstract

The application provides a ship building method and a PCTC vehicle transport ship. The ship building method comprises the following steps: hoisting two ship sides of a ship middle section to position, welding and fixing distance-keeping beams at both ends of the ship middle section after the half-width value and the total width value are qualified; hoisting a ship stern section to place at the stern end of the ship middle section, positioning and welding the ship stern section and the ship middle section, welding and fixing distance-keeping beams at the free end of the ship stern section away from the ship middle section after the half-width value and the total width value are qualified; hoisting a ship bow section to place at the bow end of the ship middle section, positioning and welding the ship bow section and the ship middle section, welding and fixing distance-keeping beams at the free end of the ship bow section away from the ship middle section after the half-width value and the total width value are qualified. The hoisting sequence of each ship section is determined, and the half-width value and the total width value of each ship section are controlled by using distance-keeping beams, so that the workload of half-width deviation adjustment and plate line adjustment is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shipbuilding, and more particularly to a shipbuilding method and a PCTC automobile transport ship. BACKGROUND

[0002] The 5-9 side section of the 7000 car PCTC (Pure Car / Truck Carrier) automobile transport ship has the characteristics of long, high and narrow shape, the length of the section is up to 38 meters, the height is 12 meters, and the lower foot width is 0.9 meters. After hoisting and positioning, the side section is positioned and fixed by welding the lower foot and transverse inclined support; the high-position support cannot be arranged in the flat plate area. The deck of the 7th and 9th cabins is hoisted after the lower foot of the side section is welded. During the welding process of the side section, the side section is fixed by clamping and supporting.

[0003] From the analysis of the shape characteristics and structure of the PCTC ship side section, since the length of the side section is long, the height is high, and the lower foot is narrow, only clamping and supporting are used to fix the side section during the welding process of the section, it is difficult to control the width direction accuracy of the side section, and the overall upper opening of the side section is easy to deviate to the direction of the ship's width, which will cause the deviation of the half width and the total width of the side section. It brings a huge workload to adjust the plate line type, and it is difficult to meet the accuracy requirements of the plate flatness. SUMMARY

[0004] (I) Technical problems to be solved

[0005] The technical problem to be solved by the present application is that the existing PCTC ship side section has the characteristics of long length, high height and narrow lower foot, which makes it difficult to control the width direction accuracy of the side section, and the half width and total width of the side section need to be adjusted in the later stage, which is difficult to construct, and the plate line type is not beautiful.

[0006] (II) Technical solutions

[0007] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0008] In a first aspect, the present application provides a shipbuilding method, the ship is composed of a plurality of hull sections connected in sequence from bow to stern, the hull section includes a plurality of bow sections, a middle section and a plurality of stern sections, and the shipbuilding method comprises the following steps:

[0009] S1, hoist the two sides of the middle section for positioning, and measure the half width and total width values. After the values are qualified, fixed distance beams are welded at the bow and stern ends of the middle section, respectively;

[0010] S2, hoist the ship stern section and place it at the stern end of the ship middle section, positionally weld the ship stern section and the ship middle section, after the half-width value and the total width value are qualified, weld the fixed distance beam at the free end of the ship stern section away from the ship middle section;

[0011] S3, hoist the next ship stern section and place it at the stern end of the previous ship stern section, positionally weld the previous ship stern section and the next ship stern section, after the half-width value and the total width value are qualified, weld the fixed distance beam at the free end of the next ship stern section away from the previous ship stern section;

[0012] S4, repeat step S3 until the multiple ship stern sections are sequentially welded;

[0013] S5, hoist the ship bow section and place it at the bow end of the ship middle section, positionally weld the ship bow section and the ship middle section, after the half-width value and the total width value are qualified, weld the fixed distance beam at the free end of the ship bow section away from the ship middle section;

[0014] S6, hoist the next ship bow section and place it at the bow end of the previous ship bow section, positionally weld the previous ship bow section and the next ship bow section, after the half-width value and the total width value are qualified, weld the fixed distance beam at the free end of the next ship bow section away from the previous ship bow section;

[0015] S7, repeat step S6 until the multiple ship bow sections are sequentially welded.

[0016] Preferably, the method further comprises the following steps:

[0017] S8, weld the deck between the ship body sections and the two ship sides of the adjacent ship body sections, weld the deck closing seam, weld the inner shell wall plate and the deck plate lower foot;

[0018] S9, after the welding is completed, remove the fixed distance beam.

[0019] Preferably, when the fixed distance beam is welded, the single side of the ship body section is controlled to be 10mm to 15mm larger than the preset position towards the ship side.

[0020] Preferably, the fixed distance beam comprises a beam body and a weight plate, one end of the weight plate is welded to the beam body, and the other end of the weight plate is welded to the deck of the two ship sides.

[0021] Preferably, the welding position of the weight plate is directly opposite the spherical flat steel or T-beam on the opposite side of the deck.

[0022] Preferably, the weight plate has two pieces, the two pieces of the weight plate are arranged in a spaced manner and abut against the longitudinal wall plates of the two ship sides.

[0023] Preferably, the size of the weight plate is 200mm in width, 200mm in height and 16mm in length.

[0024] Preferably, when the hull section is a ring section with a welded deck, no distance-keeping beam needs to be welded thereon.

[0025] Preferably, before the distance-keeping beam is welded and fixed at the bow and stern of the midship section, respectively, an inclined support is welded and fixed at the bow and stern of the midship section, respectively.

[0026] In the second aspect, the present application further provides a PCTC vehicle transport ship, which is constructed by using the ship construction method according to any one of the above technical solutions.

[0027] (III) Beneficial Effects

[0028] The above technical solution of the present application has at least the following advantages:

[0029] The present application controls the half-width value and the total width value of each hull section by using the distance-keeping beam according to the hoisting sequence of each hull section, so that the upper opening of each hull section is prevented from being deviated towards the ship's waist during the welding process, and the workload of half-width deviation adjustment and plate line adjustment is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort based on these drawings.

[0031] Figure 1 is a structural schematic view of the PCTC vehicle transport ship provided by the embodiment of the present application.

[0032] Figure 2 is a top view of the PCTC vehicle transport ship provided by the embodiment of the present application.

[0033] Figure 3 is a sectional view of the PCTC vehicle transport ship provided by the embodiment of the present application.

[0034] Figure 4 is Figure 3 is an enlarged view of A in FIG. 4.

[0035] Figure 5 is Figure 4 is a sectional view of B-B in FIG. 4.

[0036] Figure 6 is a structural schematic view of a connection node of the distance-keeping beam provided by the embodiment of the present application.

[0037] Figure 7 is Figure 6 a cross-sectional view at A-A in FIG.

[0038] The reference signs in the drawings are as follows:

[0039] 1, midship section; 2, first stern section; 3, second stern section; 4, first bow section; 5, second bow section; 6, distance-keeping beam; 7, deck; 8, steel wire rope; 9, movable deck; 61, beam body; 62, weight plate; 71, spherical flat steel; 72, T-beam; 73, longitudinal wall plate. DETAILED DESCRIPTION

[0040] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0041] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected or indirectly connected to the other element.

[0042] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application, and do not indicate that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating relative importance or indicating the number of technical features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited. The specific implementation of the present application will be described in more detail below in combination with specific embodiments:

[0044] As Figure 1 shown, the present application provides a shipbuilding method, the ship is composed of a plurality of hull sections connected in sequence from bow to stern, the hull sections include a plurality of bow sections (in this embodiment, the first bow section 4 and the second bow section 5), a midship section 1 and a plurality of stern sections (in this embodiment, the first stern section 2 and the second stern section 3), the shipbuilding method includes the following steps:

[0045] S1, positioning two ship sides (XS494 and XS394) of the midship section 1, measuring the half-width value and the total width value, and then welding the fixed distance beam 6 at the bow and stern ends (FR135-500 at the bow end and FR107 at the stern end) of the midship section 1; selecting the midship section 1 located at the middle of the ship as the positioning reference, and then welding each bow section and each stern section along the two sides of the midship section 1 in sequence, so as to reduce the accumulation of measurement deviation values as much as possible and control the positioning accuracy of the overall ship side.

[0046] S2, placing the first stern section 2 (two ship sides are XS291 and XS391 respectively) at the stern end of the midship section 1, positioning and welding the first stern section 2 and the midship section 1, measuring the half-width value and the total width value, and then welding the fixed distance beam at the free end (FR66+300 position) of the first stern section 2 away from the midship section 1;

[0047] S3, placing the second stern section 3 (two ship sides are XM491 and XM591 respectively) at the stern end of the first stern section 2, positioning and welding the first stern section 2 and the second stern section 3, measuring the half-width value and the total width value, and then welding the fixed distance beam 6 at the free end (FR27) of the second stern section 3 away from the first stern section 2;

[0048] S4, repeating step S3 until the multiple stern sections are welded in sequence;

[0049] S5, placing the first bow section 4 (in this embodiment, the first bow section 4 is a ring section, which is a ship section that has been pre-processed and has completed welding of the deck and the wall plate, and has a half-width value and a total width value that meet the standard and high structural strength that is not prone to welding deformation, so it is not necessary to weld a fixed distance beam thereon) at the bow end of the midship section 1, positioning and welding the first bow section 4 and the midship section 1; if the first bow section 4 is a ship side section in other embodiments, then a fixed distance beam needs to be welded at the free end of the first bow section 4 away from the midship section 1 after measuring the half-width value and the total width value;

[0050] S6, placing the second bow section 5 (two ship sides are XS298 and XS398 respectively) at the bow end of the first bow section 4, positioning and welding the first bow section 4 and the second bow section 5, measuring the half-width value and the total width value, and then welding the fixed distance beam 6 at the free end (FR187) of the second bow section 5 away from the first bow section 4;

[0051] S7, repeating step S6 until the multiple bow sections are welded in sequence.

[0052] In one of the embodiments, the following steps are further included:

[0053] S8, welding the deck between the two hull sides of each hull section and the adjacent hull section, welding the deck closing seam, welding the inner hull plate and the lower end of the closing seam plate;

[0054] S9, after welding, remove the distance-keeping beam 6. Further, the timing of the removal of the distance-keeping beam: after the welding of the inner hull and the outer plate of the hull side section and the adjacent section, the assembly and welding of the closing seam plate, and the welding of the deck closing seam, the distance-keeping beam can be removed.

[0055] Further, as shown in Figure 2 , the installation position of the distance-keeping beam needs to avoid the steel wire rope 8 during the lifting of the movable deck 9 and the column.

[0056] In one embodiment, when welding the distance-keeping beam 6, the single side of the hull section is controlled to be 10-15mm larger than the preset position towards the hull side. When welding the distance-keeping beam 6, the single side of the hull section will deform inward due to the welding thermal stress. By controlling the single side of the hull section to be 10-15mm larger than the preset position towards the hull side, a deformation allowance is provided to offset the welding deformation, thereby controlling the accuracy of the half-width value and the total width value.

[0057] As shown in Figure 3 and Figure 4 , in Figure 3 , the distance-keeping beam connection node at A is symmetrically arranged with the distance-keeping beam connection node at B, and the structures are also symmetrically arranged. In one embodiment, the distance-keeping beam 6 includes a beam body 61 and a weight plate 62, one end of the weight plate 62 is welded and fixed to the beam body 61, and the other end of the weight plate 62 is welded and fixed to the deck 7 of the two hull sides. The beam body 61 and the deck 7 are connected through the weight plate 62. When the distance-keeping beam 6 needs to be removed, only the weight plate 62 needs to be cut, without damaging the beam body 61 of the distance-keeping beam 6, so that the beam body 61 can be used again in the next shipbuilding process, thereby saving material cost. The connection between the weight plate 62 and the distance-keeping beam 6 needs to be full-welded around, and the welding is controlled to be ≥8. The connection between the weight plate 62 and the deck 7 needs to be full-welded around, and the welding is controlled to be ≥8.

[0058] As shown in Figure 4 and Figure 5 , in one embodiment, the welding position of the weight plate 62 is directly opposite the spherical flat steel 71 or the T-beam 72 on the opposite side of the deck 7. The deck structure at the spherical flat steel 71 or the T-beam 72 has high strength. By welding and fixing the weight plate 62 at this position, the ability of the overall structure to resist welding deformation can be enhanced.

[0059] As shown in Figure 6 and Figure 7As shown, in one embodiment, the counterweight 62 has two pieces, which are arranged at intervals and abut against the longitudinal wall plate 73 of the two sides. This embodiment is suitable for the case where the deck 7 does not have the bulb flat steel 71 or the T-beam 72 on the reverse side, and the structural strength of the deck 7 at the longitudinal wall plate 73 is relatively high, so that the counterweight 62 can be welded at the longitudinal wall plate 73 to enhance the ability of the overall structure to resist welding deformation.

[0060] In one embodiment, the counterweight 62 has a size of 200 mm in width, 200 mm in height and 16 mm in length.

[0061] In one embodiment, when the hull section is a ring section with a welded deck, it is not necessary to weld the distance-keeping beam thereon. For example, in this embodiment, the bow section (XU096) is a ring section, so that it is not necessary to weld the distance-keeping beam when it is welded and fixed with the bow section 1.

[0062] In one embodiment, before the distance-keeping beam is welded and fixed at the bow and stern of the midship section, the inclined support is welded and fixed at the bow and stern of the midship section, respectively. The inclined support is welded and fixed at the strong structural position of the bow and stern, and the positioning welding is completed according to the requirement of the car release constraint, so as to reduce the welding thermal deformation.

[0063] In the second aspect, the present application further provides a PCTC automobile transport ship, which is constructed by using the ship construction method of any one of the above technical solutions.

[0064] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method of ship construction, characterised in that, The ship is composed of a plurality of hull sections connected in sequence from bow to stern, the hull sections including a plurality of bow sections, a midship section and a plurality of stern sections, and the ship building method comprises the following steps: S1, hoisting the two sides of the ship of the midship section to position, measuring the half-width value and the total width value, and then welding the fixed distance beam at the bow and stern ends of the midship section; S2, hoisting the stern section and placing it at the stern end of the midship section, positioning and welding the stern section and the midship section, measuring the half-width value and the total width value, and then welding the fixed distance beam at the free end of the stern section away from the midship section; S3, hoisting the next stern section and placing it at the stern end of the previous stern section, positioning and welding the previous stern section and the next stern section, measuring the half-width value and the total width value, and then welding the fixed distance beam at the free end of the next stern section away from the previous stern section; S4, repeating step S3 until the plurality of stern sections are sequentially welded; S5, hoisting the bow section and placing it at the bow end of the midship section, positioning and welding the bow section and the midship section, measuring the half-width value and the total width value, and then welding the fixed distance beam at the free end of the bow section away from the midship section; S6, hoisting the next bow section and placing it at the bow end of the previous bow section, positioning and welding the previous bow section and the next bow section, measuring the half-width value and the total width value, and then welding the fixed distance beam at the free end of the next bow section away from the previous bow section; S7, repeating step S6 until the plurality of bow sections are sequentially welded.

2. The shipbuilding method according to claim 1, characterized in that, Further comprising the following steps: S8, welding the deck between the two sides of each hull section and the adjacent hull section, welding the deck closing seam, welding the inner shell wall plate and the closing seam plate; S9, after welding, remove the distance beam.

3. The shipbuilding method as defined in claim 1, characterized in that, When welding the fixed distance beam, the single side of the hull section is controlled to be 10-15mm larger than the preset position to the side.

4. The shipbuilding method as defined in claim 1, characterized by, The distance beam comprises a beam body and a weight plate, one end of the weight plate is welded to the beam body, and the other end of the weight plate is welded to the deck on both sides.

5. The method of shipbuilding as claimed in claim 4, wherein, The welding position of the weight plate is opposite to the spherical flat steel or T beam on the opposite side of the deck.

6. The method of shipbuilding as claimed in claim 4, wherein, The weight plate has two blocks, the two blocks are spaced apart and abut against the longitudinal wall plate on both sides.

7. The method of boat building of claim 5, wherein, The size of the weight plate is 200mm wide x 200mm high x 16mm long.

8. The method of shipbuilding as claimed in claim 1, wherein, When the hull section is a ring section with a welded deck, no distance beam needs to be welded thereon.

9. The method of boat building of claim 1, wherein, Before welding the fixed distance beam at the bow and stern ends of the midship section, inclined support members are welded at the bow and stern ends of the midship section.

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