A general assembly method for a container ship super large line type windbreak cover

Abstract

The application discloses a general assembling method for a windbreak cover of a container ship super large line type, which assembles the windbreak cover section together with the bulwark section, and after all the bulwark sections are assembled, the bulwark sections are used as the bracket for the windbreak cover assembly, and then the windbreak cover section and the bulwark section are assembled into an integrated whole, which is beneficial to guarantee the safety in the windbreak cover assembly process and the control of the deformation of the lower opening of the windbreak cover assembly section, facilitates the positioning of the windbreak cover assembly, and also reduces the workload of the dock loading.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shipbuilding technology, and particularly relates to a general assembly method for a super-large fairwater wind shield of a container ship. BACKGROUND

[0002] With the development of large container ships, the height of the containers on the deck has increased a lot, which requires the ship to withstand greater wind resistance. The wind shield has sufficient strength to meet the wave impact force, and the containers are placed obliquely on the ship side behind the wind shield, and the ship side will be streamlined to minimize wind resistance.

[0003] The wind shield spans the entire forecastle deck transversely and longitudinally, and has large size and large line type, so that the general assembly and overall lifting are required to solve the problem of joint welding of the general assembly, and there is no experience in the construction of the wind shield of the super-large container ship. SUMMARY

[0004] Therefore, the present application provides a general assembly method for a super-large fairwater wind shield of a container ship to solve the problems in the background.

[0005] A general assembly method for a super-large fairwater wind shield of a container ship, specifically comprising the following steps:

[0006] S1, fixing the box beam and the general assembly support to the set position of the general assembly platform;

[0007] S2, sequentially hoisting and positioning each bulwark section from the middle to both sides, each bulwark section being supported by the box beam at the corresponding position, after all the bulwark sections are positioned, detecting whether the levelness of the bulwark deck meets the requirements, and if so, welding and fixing the butt joint between the adjacent bulwark sections and the position where the lower opening of the bulwark section contacts the box beam;

[0008] S3, sequentially hoisting and positioning the wind shield sections on the bulwark sections from the middle to both sides, and hoisting the next wind shield section after the positioning and welding of the previous wind shield section are completed;

[0009] S4, after all the wind shield sections are hoisted and positioned, the wind shield sections and the bulwark sections together form a wind shield section.

[0010] Preferably, the specific steps of fixing the box beam and the general assembly support to the set position of the general assembly platform in step S1 are as follows:

[0011] determining the general assembly construction scheme and drawing the general assembly jig drawing;

[0012] drawing the ship centerline and the rib inspection line on the general assembly platform, and drawing the positioning line of the box beam and the general assembly support on the general assembly platform according to the positioning size and position set in the general assembly jig drawing;

[0013] According to the positioning line of the box girder and the general assembly support, the box girder and the general assembly support are arranged at the corresponding position, wherein the box girder is fixed by adopting the plate and the pre-buried iron on the general assembly platform.

[0014] Preferably, the box girder corresponds to the large T-shaped row of the lower opening of the bulwark segment, and each bulwark segment is provided with at least two box girders for supporting.

[0015] Preferably, there are at least two connecting points between each box girder and the pre-buried iron on the general assembly platform.

[0016] Preferably, the specific steps of sequentially hoisting and positioning the wind shield segments from the middle to both sides on the bulwark segments in step S3 are as follows:

[0017] Firstly, the wind shield segment in the middle is hoisted by the crane to the bulwark segment in the middle, and the lower opening structure is aligned with the reverse structure of the bulwark deck, the support seat on the wind shield segment is seated on the general assembly support, then the lower opening is constrained and welded with the bulwark segment in the middle, after the welding is completed, the crane is unhooked.

[0018] Then, the remaining wind shield segments are sequentially hoisted from both sides, the next wind shield segment is hoisted after the positioning and welding of the previous wind shield segment are completed, and the next wind shield segment is welded by constraint welding with the previous wind shield segment.

[0019] Preferably, the wind shield segment in the middle hoisted and positioned only has the lower opening constrained and welded with the corresponding bulwark segment in the middle.

[0020] Preferably, the wind shield segment near the tail is not provided with a support seat.

[0021] Preferably, the wind shield segment near the tail is supported and fixed by the cable steel wire rope arranged at the tail thereof.

[0022] Preferably, the lower opening of the wind shield segment in step S3 is flat angle welded with the bulwark segment.

[0023] The beneficial effects of the present application are as follows:

[0024] 1. According to the linear characteristics of the wind shield, the existing box girder jig is used as the general assembly support jig, without the need for special new jigs, avoiding the waste of jig materials, and reducing the manufacturing cost.

[0025] 2. The application divides the wind shield section and the bulwark section together, and the bulwark section is totally assembled first, then the wind shield section is assembled together with the bulwark section, which is beneficial to the safety of the wind shield assembly and the control of the deformation of the wind shield section, and facilitates the positioning of the wind shield assembly, and reduces the workload of the dock.

[0026] 3. When hoisting the wind shield section, the wind shield section in the middle of the span is marked with the centerline of the ship body, so hoisting the section first is beneficial to the overall positioning of the wind shield section, and the height of the bulwark section in the middle of the span is small, so the positioning is not prone to overturning, and the wind shield sections in other positions can be positioned later and connected with the wind shield section positioned in advance, which can avoid overturning during the assembly. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of 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 are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is a general assembly jig diagram in a general assembly method for a super-large wind shield of a container ship of the present application;

[0029] Figure 2 is a three-dimensional overview diagram of the wind shield and the bulwark structure in a general assembly method for a super-large wind shield of a container ship of the present application;

[0030] Figure 3 is an installation schematic diagram of a wind shield section support seat in a general assembly method for a super-large wind shield of a container ship of the present application;

[0031] Figure 4 is a general assembly loose hook restraint diagram in a general assembly method for a super-large wind shield of a container ship of the present application;

[0032] The meanings of the reference numerals in the drawings are as follows:

[0033] 1. Wind shield section; 2. Bulwark section; 3. Platform embedded iron; 4. Box beam; 5. General assembly support; 6. Support seat; 7. Restraint welding; 8. Cable wind steel wire rope; 9. Large T row; 10. Bulwark deck; 11. Ship body centerline; 12. Rib inspection line. DETAILED DESCRIPTION

[0034] In order to better understand the technical solutions of the present application, the embodiments of the present application will be described in detail below with reference to the drawings.

[0035] It should be noted that the embodiments described are merely some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] The present application will be further described in detail below with specific embodiments and in conjunction with the drawings.

[0037] The present application provides a general assembly method for a container ship super-large line type windbreak, specifically comprising the following steps:

[0038] S1, fixing the box beam 4 and the general assembly support 5 to the set position of the general assembly platform.

[0039] Specifically, first, the general assembly construction scheme is determined, and the general assembly jig drawing is drawn.

[0040] The determined general assembly construction scheme is that the windbreak section is assembled with the bulwark section to form a windbreak section, and after the bulwark section is completely assembled, it is used as a bracket for the windbreak assembly, and then the windbreak section and the bulwark section are assembled into one.

[0041] Because the overall windbreak is in a converging line type, the windbreak section falls on the bulwark section, and the bulwark section needs to be fixed with the general assembly jig. If a special jig is designed, the size of the jig will be very large because the windbreak spans the forecastle deck, which is not conducive to cost control. Therefore, the existing box beam 4 is selected as the jig in this embodiment.

[0042] Then, the ship centerline 11 and the rib inspection line 12 are drawn on the general assembly platform, and the positioning lines of the box beam 4 and the general assembly support 5 are drawn on the general assembly platform according to the positioning size and position set in the general assembly jig drawing.

[0043] Then, the box beam 4 and the general assembly support 5 are set in the corresponding positions according to the positioning lines of the box beam 4 and the general assembly support 5, wherein the box beam 4 is connected and fixed with the pre-embedded iron on the general assembly platform.

[0044] According to the line type and structure form of the lower opening of the bulwark section, the box beam 4 is arranged at the lower opening of the bulwark section with large T rows, that is, the box beam 4 corresponds to the large T rows of the lower opening of the bulwark section one by one. The placement of the box beam 4 should be set according to the position of the T rows of the lower opening of the bulwark. In this embodiment, at least two box beams 4 are provided for each bulwark section to support it; and in this embodiment, the spacing of the pre-embedded iron on the general assembly platform is 4*4 meters. In order to ensure that each box beam 4 has at least two connection points with the pre-embedded iron on the general assembly platform on one side, the length of the box beam should be at least 6 meters.

[0045] S2, the bow bulkhead segments 2 are hoisted and positioned in turn from the middle to both sides, each bow bulkhead segment 2 is supported by the box beam 4 at the corresponding position, after all the bow bulkhead segments 2 are positioned, the levelness of the bow bulkhead deck 10 is detected to see whether it meets the requirements, if it meets the requirements, the butt joints between adjacent bow bulkhead segments 2 and the positions where the lower openings of the bow bulkhead segments 2 contact the box beam 4 are welded and fixed.

[0046] Since the contact surface between the lower opening of the bow bulkhead segment 2 and the box beam 4 is small and the overall line type of the wind shield is collected to the middle of the ship, when the bow bulkhead segment 2 is hoisted onto the box beam 4, the place where the bow bulkhead segment 2 contacts the box beam 4 is outside the center of gravity of the wind shield, therefore, in order to ensure safety, the lower opening of the bow bulkhead segment 2 needs to be fixed with the box beam 4, and the box beam 4 also needs to be fixed with the platform embedded iron.

[0047] S3, the wind shield segments 1 are hoisted and positioned in turn from the middle to both sides on the bow bulkhead segments 2, after the positioning and welding of the previous wind shield segment are completed, the next wind shield segment is hoisted.

[0048] Specifically, first, the midspan wind shield segment is hoisted by a crane onto the midspan bow bulkhead segment, the lower opening structure thereof is aligned with the reverse structure of the bow bulkhead deck 10, the support seat 6 on the wind shield segment is seated on the total group support 5, then the lower opening thereof is constraint-welded with the midspan bow bulkhead segment, after the welding is completed, the crane is unhooked.

[0049] Then, the remaining wind shield segments are hoisted in turn from both sides, after the positioning and welding of the previous wind shield segment are completed, the next wind shield segment is hoisted, and the next wind shield segment is constraint-welded with the previous wind shield segment.

[0050] In this embodiment, the lower opening of the wind shield segment 1 is flat-angle welded with the bow bulkhead segment 2, in order to ensure the accuracy of the wind shield total group, after the bow bulkhead total group is completed, the levelness of the bow bulkhead deck 10 needs to be adjusted as a whole.

[0051] Preferably, only the lower opening of the first hoisted and positioned midspan wind shield segment is constraint-welded with the corresponding midspan bow bulkhead segment.

[0052] Preferably, since the rib line type of the wind shield segment near the tail is small, if the support seat 6 is arranged on the wind shield segment as on the wind shield segments at other positions, the support seat 6 will interfere with the rib, therefore, the support seat 6 is not arranged on the wind shield segment near the tail, and the wind shield segment near the tail is supported and fixed by the cable wind steel wire rope 8 arranged at the tail thereof.

[0053] The windbreak section in the cross is divided by the hull center line, thus, first hoisting the section is beneficial to the overall positioning of the windbreak section, and the height of the bulwark section in the cross is small, and the first positioning is not prone to overturning, and the windbreak sections in other positions positioned later can be connected with the windbreak sections positioned in front.

[0054] S4, after the windbreak section 1 is hoisted and positioned, the windbreak section and the bulwark section 2 jointly form a windbreak section.

[0055] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for assembling an oversized linear wind shield for a container ship, characterized in that, Specifically, the following steps are included: S1, fix the box girder (4) and the main support (5) to the set position of the main platform; S2, hoist and position each bulwark segment (2) from the middle to both sides in sequence. Each bulwark segment (2) is supported by the box beam (4) at the corresponding position. After all the bulwark segments (2) are positioned, check whether the levelness of the bulwark deck (10) meets the requirements. If it meets the requirements, weld and fix the butt joint between adjacent bulwark segments (2) and the position where the lower end of the bulwark segment (2) contacts the box beam (4). S3, hoist and position the wind shield sections (1) from the middle to both sides onto the bulwark section (2). After the previous wind shield section is positioned and welded, hoist the next wind shield section. S4, After all sections (1) of the wind shield are hoisted and positioned, they together with the bulwark section (2) form the wind shield section.

2. The assembly method for an ultra-large linear windproof shield for container ships according to claim 1, characterized in that, The specific steps for fixing the box girder (4) and the main assembly support (5) to the designated positions on the main assembly platform in step S1 are as follows: Determine the overall construction plan and draw the overall assembly form diagram; Draw the hull centerline (11) and rib inspection line (12) on the assembly platform. Draw the positioning lines of the box beam (4) and the assembly support (5) on the assembly platform according to the positioning dimensions and positions set in the assembly jig drawing. According to the positioning lines of the box girder (4) and the main support (5), the box girder (4) and the main support (5) are set in the corresponding positions, wherein the box girder (4) is fixed by connecting the pre-embedded iron on the main support platform with the plate.

3. The assembly method for an ultra-large linear windproof shield for container ships according to claim 2, characterized in that, The box girder (4) corresponds one-to-one with the large T-shaped row at the bottom of the bulwark section, and each bulwark section is provided with at least 2 box girder (4) for support.

4. The assembly method for an oversized linear windproof shield for container ships according to claim 2 or 3, characterized in that, Each box girder (4) has at least two connection points with the embedded iron on the main assembly platform.

5. The assembly method for an ultra-large linear wind shield for container ships according to claim 1, characterized in that, The specific steps for hoisting and positioning the wind shield sections (1) from the middle to both sides onto the bulwark sections (2) in step S3 are as follows: First, the wind shield section in the middle of the span is hoisted onto the bulwark section in the middle of the span using a crane, and its lower structure is aligned with the reverse structure of the bulwark deck (10). The support seat (6) on the wind shield section is placed on the main support (5). Then, its lower opening is subjected to a loosening hook constraint weld with the bulwark section in the middle of the span. After the welding is completed, the crane hook is released. Then, the remaining windproof cover sections are hoisted to both sides in sequence. After the previous windproof cover section is positioned and welded, the next windproof cover section is hoisted, and the next windproof cover section is constrained and welded to the previous windproof cover section.

6. The assembly method for an ultra-large linear wind shield for container ships according to claim 5, characterized in that, First, the windproof cover section in the middle of the span is hoisted and positioned, and only its lower opening is constrained and welded to the corresponding bulwark section in the middle of the span.

7. The assembly method for an ultra-large linear wind shield for container ships according to claim 5, characterized in that, No support base is installed on the tail section of the wind shield (6).

8. The assembly method for an ultra-large linear wind shield for container ships according to claim 5, characterized in that, The tail section of the windproof cover is supported and fixed by the cable wind steel wire rope (8) set at its tail.

9. The assembly method for an ultra-large linear wind shield for container ships according to claim 1, characterized in that, In step S3, the lower opening of the wind shield section (1) is welded to the bulwark section (2) at a flat angle.

Images