Cabin bottom section and construction method thereof

Abstract

The invention provides a cabin bottom section and a construction method thereof. The construction method comprises the following steps: splitting the whole cabin bottom section into an inner bottom folding middle assembly, an outer plate middle assembly above the inner bottom and a transverse bulkhead assembly; meanwhile, the inner bottom folding middle assemblage is reasonably split into a plurality of middle assemblage bodies such as a main engine pit middle assemblage body, a stern left and right outer plate middle assemblage body and a bow left and right outer plate middle assemblage body, the operation mode is changed into parallel construction from series connection, site resources are conveniently coordinated to organize production, and occupied cranes in a main operation area are reduced; narrow space operation is changed into open space operation, construction is facilitated, scattered outer plate pasting overhead welding operation is reduced, and the construction difficulty is lowered. According to the construction method, the aims of quickly constructing the pit of the main engine in sections, producing according to takt and improving the production efficiency are fulfilled.

Description

Technical Field

[0001] The invention relates to the technical field of ship construction, and in particular to a method for constructing a main engine pit in sections at the bottom of a cabin. Background Art

[0002] The main engine base pit area structure is set at the bottom of the mainstream ship engine room, including high and low seawater doors, main engine lubricating oil circulation tanks, waste water tanks, waste oil tanks and other compartments. Due to the large line shape of the stern area and the narrow internal space, construction work is difficult and personnel are inconvenient to enter and exit. The traditional method is to use the inner bottom plate as the base surface, hoist the structure below the inner bottom plate in sequence, and then scatter the outer plate to form an overall middle assembly. After the welding is completed, the outer plate middle assembly above the inner bottom and the transverse bulkhead subassembly are hoisted to form a complete segment. This middle assembly construction method has the following shortcomings: 1. The inner bottom middle assembly is a whole middle assembly, the construction work is large, the operation cycle is long, and the area is large, resulting in a waste of site resources; 2. A large number of crane resources are required to hoist the structure below the inner bottom, which affects the efficiency of the crane use in the segment production site; 3. The internal space is small, the construction work is difficult, and personnel are inconvenient to enter and exit; 4. There are a lot of overhead welding in the scattered outer plate operation, which is difficult to construct. In order to control the line shape of the outer plate, it is necessary to adjust and trim repeatedly. Summary of the invention

[0003] In view of the shortcomings of the prior art mentioned above, the purpose of the present invention is to provide a method for the segmented construction of the main engine pit at the bottom of the engine room, so as to improve the efficiency of the corresponding segmented construction, reasonably plan the site, control the main operating crane and other production resources, achieve output according to the beat, and further shorten the shipbuilding cycle.

[0004] To achieve the above and other related objectives, the present invention provides a method for constructing a cabin bottom section, comprising the following steps:

[0005] S1, assembling in the host pit;

[0006] S2. Make two stern outer panels facing each other on the left and right and assemble them;

[0007] S3, make two left and right opposite bow outer plates and assemble them;

[0008] S4, making the inner bottom and assembling it;

[0009] Arrange a flat high and low cradle on the construction site, hoist the inner bottom plate structure as the base surface, and hoist the main engine pit, assemble it in the stern outer plate, assemble it in the bow outer plate, and install the middle outer bottom plate to form the whole inner bottom folding and assembling;

[0010] The stern outer panel is assembled on the left and right sides of the main engine pit, the middle outer bottom plate covers the lower surface of the main engine pit away from the inner bottom plate structure and connects the stern area outer panels assembled in the stern outer panel on both sides, and the bow outer panel is assembled and connected to the bow end of the stern outer panel.

[0011] Optionally, step S1 includes: arranging a flat tire frame on the construction site, hoisting the upper platform group as the base surface, and hoisting the lower platform group, the rib group, and the longitudinal group in sequence, and installing them to form an assembly in the main engine pit; the upper platform group and the lower platform group both include a flat plate, a longitudinal girder assembly, and a left and right rib plate assembly, the longitudinal girder assembly and the left and right rib plate assembly are vertically erected on the flat plate, and a plurality of left and right rib plate assemblies are arranged along the bow and stern directions, the longitudinal girder assembly is located on the center line of the flat plate and is perpendicular to the left and right rib plate assemblies; the upper platform group and the lower platform group are stacked, and the rib plate group and the longitudinal group are respectively located at the two ends of the upper platform group along the bow and stern directions.

[0012] Optionally, step S2 includes: arranging a curved surface frame on the construction site, hoisting the stern area outer plate as the base surface, and sequentially hoisting the main engine base longitudinal girder subassembly and the stern longitudinal girder plate subassembly to form the stern outer plate middle assembly;

[0013] The main engine base longitudinal girder group includes a vertically arranged main engine base longitudinal girder plate, and a trapezoidal distal middle rib frame fixed to the same side of the main engine base longitudinal girder plate and arranged along the bow and stern direction, and the inner bottom lower flat steel parallel to the main engine base longitudinal girder plate connects a plurality of trapezoidal distal middle rib frames in series; the stern longitudinal girder plate group includes a vertically arranged longitudinal girder plate, and a fan-shaped distal middle rib frame fixed to the same side of the longitudinal girder plate and arranged along the bow and stern direction;

[0014] The outer plate of the stern area is a curved plate that gradually converges toward the centerline of the hull from top to bottom; the main engine base longitudinal girder group stands on the lower edge of the outer plate of the stern area close to the centerline of the hull, and the stern longitudinal girder plate group stands between the main engine base longitudinal girder group stands and the upper edge of the outer plate of the stern area; the main engine base longitudinal girder plates of the main engine base longitudinal girder group stands and the longitudinal girder plates of the stern longitudinal girder plate group stands are both vertically arranged and parallel to the bow and stern directions; the longitudinal girder plates of the stern longitudinal girder plate group stands are in contact with the trapezoidal distal center rib frame of the main engine base longitudinal girder group stands, and the lower edge of the trapezoidal distal center rib frame and the lower edge of the fan-shaped distal center rib frame are both adapted to fit the surface of the outer plate of the stern area.

[0015] Optionally, step S3 includes: arranging a curved cradle on the construction site, hoisting the bow area outer plate as the base surface, and sequentially hoisting the outer plate longitudinal bone, the bow longitudinal girder plate subassembly, the rib frame subassembly, and the transverse bulkhead subassembly to form the bow outer plate middle assembly;

[0016] The outer plate in the bow area is a curved plate that gradually converges toward the center line of the hull from top to bottom; the outer plate longitudinal bone is erected at the lower edge of the outer plate in the bow area close to the center line of the hull, and the bow longitudinal girders are erected between the outer plate longitudinal bone and the upper edge of the outer plate in the bow area; the transverse bulkhead group is erected at the stern end edge of the outer plate in the bow area.

[0017] Optionally, the method further comprises the following steps:

[0018] S5, making two inner bottoms opposite to each other on the left and right and assembling them on the outer plate;

[0019] Arrange the curved cradle on the construction site, hoist the outer plate structure above the inner bottom as the base surface, and sequentially hoist the rib assembly, horizontal girder assembly, high and low seabed door assembly, side transverse bulkhead assembly and other small assembly, and weld to form the outer plate middle assembly above the inner bottom;

[0020] S6, completion of segmental assembly;

[0021] Arrange the gantry on the construction site, turn over and hoist the inner bottom closing middle assembly to the gantry, adjust the inner bottom plate structure away from the stern outer plate middle assembly surface upward and ensure it is level, hoist the outer plate middle assembly above the inner bottom and the transverse bulkhead assembly in turn, and weld them to form a complete section;

[0022] The lower edges of the two outer plates above the inner bottom are respectively connected to the upper left and right edges of the inner bottom. The transverse bulkhead assembly is vertically installed on the upper edge of the bow end assembled in the inner bottom. The left and right edges of the transverse bulkhead assembly are connected to the bow end assembled in the outer plates above the inner bottom.

[0023] The present invention also provides a cabin bottom section, the cabin bottom section includes an inner bottom folded middle assembly, the upper surface of the inner bottom folded middle assembly is a plane and a transverse bulkhead assembly and two inner bottom upper outer plate middle assemblies opposite to each other are installed on the upper surface;

[0024] The lower edges of the inner bottom upper outer plate structures assembled in the two inner bottom upper outer plates are respectively connected to the upper left and right edges of the inner bottom folded assembly, the transverse bulkhead assembly is vertically installed on the upper edge of the bow end assembled in the inner bottom folded assembly, and the left and right edges of the transverse bulkhead assembly are connected to the bow end assembled in the inner bottom upper outer plate.

[0025] Optionally, the inner bottom folding mid-assembly includes an inner bottom plate structure, and a main engine pit mid-assembly, a stern outer plate mid-assembly, and a bow outer plate mid-assembly installed on the lower surface of the inner bottom plate structure;

[0026] The stern outer plate assembly is located on the left and right sides of the main engine pit assembly, the middle outer bottom plate covers the lower surface of the main engine pit assembly away from the inner bottom plate structure and connects the stern outer plate assembly on both sides, and the bow outer plate assembly is connected to the bow end of the stern outer plate assembly.

[0027] Optionally, the main engine pit is assembled with a stacked upper platform sub-group and a lower platform sub-group, and the rib sub-group and the longitudinal sub-group are respectively located at two ends of the upper platform sub-group along the bow and stern directions.

[0028] Optionally, the stern outer plate assembly includes a stern area outer plate, a main engine base longitudinal girder subassembly, and a stern longitudinal girder plate subassembly;

[0029] The main engine base longitudinal girder group includes a vertically arranged main engine base longitudinal girder plate, and a trapezoidal distal middle rib frame fixed to the same side of the main engine base longitudinal girder plate and arranged along the bow and stern direction, and the inner bottom lower flat steel parallel to the main engine base longitudinal girder plate connects a plurality of trapezoidal distal middle rib frames in series; the stern longitudinal girder plate group includes a vertically arranged longitudinal girder plate, and a fan-shaped distal middle rib frame fixed to the same side of the longitudinal girder plate and arranged along the bow and stern direction;

[0030] The stern area outer plate is a curved plate that gradually converges toward the centerline of the hull from top to bottom; the main engine base longitudinal girder group stands on the lower edge of the stern area outer plate close to the centerline of the hull, and the stern longitudinal girder plate group stands between the main engine base longitudinal girder group and the upper edge of the stern area outer plate;

[0031] The main engine base longitudinal truss plates of the main engine base longitudinal truss group and the longitudinal truss plates of the stern longitudinal truss plate group are both vertically arranged and parallel to the bow and stern directions; the longitudinal truss plates of the stern longitudinal truss plate group are in contact with the trapezoidal distal center rib frame of the main engine base longitudinal truss group, and the lower edge of the trapezoidal distal center rib frame and the lower edge of the fan-shaped distal center rib frame are both adapted to fit the surface of the outer plate of the stern area.

[0032] Optionally, the bow outer plate assembly includes a bow area outer plate, an outer plate longitudinal bone, a bow longitudinal girder plate subassembly, a rib frame subassembly, and a transverse bulkhead subassembly;

[0033] The outer plate in the bow area is a curved plate that gradually converges toward the center line of the hull from top to bottom. The outer plate longitudinal bone is erected at the lower edge of the outer plate in the bow area close to the center line of the hull. The bow longitudinal girders are erected between the outer plate longitudinal bone and the upper edge of the outer plate in the bow area. The transverse bulkhead group is erected at the stern edge of the outer plate in the bow area.

[0034] As described above, the present invention provides a cabin bottom section and a construction method thereof, which divides the entire cabin bottom section into an inner bottom folding middle assembly, an outer plate middle assembly above the inner bottom, and a transverse bulkhead assembly; at the same time, the inner bottom folding middle assembly is reasonably divided into a plurality of middle assemblies such as a main engine pit middle assembly, a stern left and right outer plate middle assembly, and a bow left and right outer plate middle assembly, and the operation mode is changed from series construction to parallel construction, which is convenient for coordinating site resources to organize production and reduce the occupation of cranes in the main operation area; the narrow space operation is changed to an open space operation, which is convenient for construction and reduces the scattered outer plate overhead welding operation, thereby reducing the construction difficulty. This construction method achieves the purpose of rapid segmented construction of the main engine pit, production according to the beat, and improved production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the assembled structure in the main engine pit in the present invention.

[0036] Figure 2 It is a schematic diagram of the structure of the upper and lower platform groups of the main engine pit in the present invention.

[0037] Figure 3 It is a schematic diagram of the assembled structure of the stern outer plate in the present invention.

[0038] Figure 4 It is a schematic diagram of the vertical structure of the longitudinal truss plate group of the main engine base in the present invention.

[0039] Figure 5 It is a schematic diagram of the vertical structure of the stern longitudinal girder panel group in the present invention.

[0040] Figure 6 It is a schematic diagram of the assembled structure of the bow outer plate in the present invention.

[0041] Figure 7 It is a schematic diagram of the assembled structure of the inner bottom during closure in the present invention.

[0042] Figure 8 It is a schematic diagram of the assembled structure of the outer plate above the inner bottom in the present invention.

[0043] Fig. 9 It is a schematic diagram of the segmented assembly of the main engine pit in the present invention.

[0044] Component number description

[0045] Main engine pit middle assembly 11; upper platform group assembly 111; lower platform group assembly 112; rib plate group assembly 113; longitudinal group assembly 114; flat plate 1111; longitudinal girder assembly 1112; left and right rib plate assembly 1113; stern outer plate middle assembly 12; stern area outer plate 121; main engine base longitudinal girder group assembly 122; stern longitudinal girder plate group assembly 123; main engine base longitudinal girder plate 1221; trapezoidal far middle rib frame 1222; inner bottom lower flat steel 1223; longitudinal girder plate 123 1; fan-shaped far middle rib frame 1232; bow outer plate middle assembly 13; bow area outer plate 131; outer plate longitudinal 132; bow longitudinal girder plate group assembly 133; rib frame group assembly 134; transverse bulkhead group assembly 135; inner bottom closing middle assembly 1; inner bottom plate structure 14; middle outer bottom plate 15; outer plate middle assembly 2 above inner bottom; outer plate structure 21 above inner bottom; rib assembly 22; horizontal girder assembly 23; high and low sea bottom door assembly 24; side transverse bulkhead assembly 25; transverse bulkhead assembly 3. DETAILED DESCRIPTION

[0046] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0047] For example, when describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0048] For ease of description, spatial relational terms such as "under", "below", "below", "below", "above", "on", etc. may be used herein to describe the relationship of one element or feature shown in the drawings to other elements or features. It will be understood that these spatial relational terms are intended to include other directions of the device in use or operation in addition to the directions depicted in the drawings. In addition, when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or there can be one or more intervening layers. As used herein, "between..." means including the end point values.

[0049] In the context of the present application, a structure in which a first feature is described as being "above" a second feature may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact.

[0050] It should be noted that the illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, and therefore the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0051] Embodiment 1

[0052] like Figures 1 to 9 As shown, this embodiment provides a method for constructing a cabin bottom section, comprising the following steps:

[0053] S1, assembling 11 in a manufacturing pit of a host machine;

[0054] Arrange a flat tire frame on the construction site, such as Figure 1 As shown, the upper platform subassembly 111 is hoisted as the base surface, and the lower platform subassembly 112, the rib subassembly 113, the longitudinal subassembly 114 and the remaining subassemblies are hoisted in sequence to form the mainframe pit assembly 11.

[0055] like Figure 2 As shown, the upper platform subassembly 111 and the lower platform subassembly 112 both include a flat plate 1111, a longitudinal girder assembly 1112, and a left and right rib assembly 1113. The longitudinal girder assembly 1112 and the left and right rib assemblies 1113 are vertically erected on the flat plate 1111, and a plurality of left and right rib assemblies 1113 are arranged along the bow and stern directions. The longitudinal girder assembly 1112 is located on the center line of the flat plate 1111 and is perpendicular to the left and right rib assemblies 1113.

[0056] The upper platform sub-assembly stand 111 and the lower platform sub-assembly stand 112 are stacked, and the rib sub-assembly stand 113 and the longitudinal sub-assembly stand 114 are respectively located at two ends of the upper platform sub-assembly stand 111 along the bow and stern directions.

[0057] S2, manufacturing two stern outer plate middle assemblies 12, including a stern left outer plate middle assembly and a stern right outer plate middle assembly opposite to each other;

[0058] Arrange the curved tire frame on the construction site, such as Figure 3 As shown, the stern area outer plate 121 is hoisted as the base surface, and the main engine base longitudinal girder group 122, the stern longitudinal girder plate group 123 and the remaining groups are hoisted in sequence to form the stern outer plate middle assembly 12.

[0059] like Figure 4As shown, the main engine base longitudinal girder group 122 includes a main engine base longitudinal girder plate 1221 arranged vertically, and a trapezoidal far middle rib frame 1222 arranged along the bow and stern direction fixed to the same side of the main engine base longitudinal girder plate 1221, and a plurality of trapezoidal far middle rib frames 1222 are connected in series by an inner bottom lower flat steel 1223 parallel to the main engine base longitudinal girder plate 1221. During manufacturing, the main engine base longitudinal girder plate 1221 is used as the base surface, the trapezoidal far middle rib frame 1222 is welded, and the inner bottom lower flat steel 1223 is spot welded. According to the design drawings and process requirements, the main engine base longitudinal girder group 122 is manufactured in the stage of segmented group manufacturing.

[0060] like Figure 5 As shown, the stern longitudinal girder plate subassembly 123 includes a vertically arranged longitudinal girder plate 1231 and a fan-shaped far-center rib frame 1232 arranged along the bow and stern direction and fixed to the same side of the longitudinal girder plate 1231. During manufacturing, the longitudinal girder plate 1231 is used as the base surface, and the fan-shaped far-center rib frame 1232 is welded. According to the design drawings and process requirements, the stern longitudinal girder plate subassembly 123 is manufactured in the stage of segmented subassembly manufacturing.

[0061] The stern area outer plate 121 is a curved plate that gradually converges toward the centerline of the hull from top to bottom; during assembly, the main engine base longitudinal girder group stand 122 stands on the lower edge of the stern area outer plate 121 close to the centerline of the hull, and the stern longitudinal girder plate group stand 123 stands between the main engine base longitudinal girder group stand 122 and the upper edge of the stern area outer plate 121. The main engine base longitudinal girder plate 1221 of the main engine base longitudinal girder group stand 122 and the longitudinal girder plate 1231 of the stern longitudinal girder plate group stand 123 are both vertically arranged and parallel to the bow and stern directions. The longitudinal girder plate 1231 of the stern longitudinal girder plate group 123 contacts the trapezoidal distal rib frame 1222 of the main engine base longitudinal girder group 122, and the lower edge of the trapezoidal distal rib frame 1222 and the lower edge of the fan-shaped distal rib frame 1232 are both adapted to fit the surface of the stern area outer plate 121.

[0062] Furthermore, along the circumference of the stern area outer plate 121, the width of the lower edge of the stern area outer plate 121 protruding from the main engine base longitudinal girder group 122 is 75 to 100 mm, the width of the upper edge of the stern area outer plate 121 protruding from the stern longitudinal girder plate group 123 is 75 to 100 mm, and along the length direction of the stern area outer plate 121, the bow end edge of the stern area outer plate 121 is 150 to 200 mm away from the watertight transverse bulkhead plate.

[0063] S3, manufacturing two bow outer plate middle assemblies 13, including a bow left outer plate middle assembly and a bow right outer plate middle assembly opposite to each other;

[0064] Arrange the curved tire frame on the construction site, such as Figure 6As shown, the bow area outer plate 131 is hoisted as the base surface, and the outer plate longitudinal bones 132, the bow longitudinal girder plate subassembly 133, the rib frame subassembly 134, the transverse bulkhead subassembly 135 and the remaining subassemblies are hoisted in sequence to form the bow outer plate middle assembly 13.

[0065] Similar to the structure assembled in the stern outer plate, the bow area outer plate 131 is a curved plate that gradually converges toward the centerline of the hull from top to bottom; during assembly, the outer plate longitudinal bone 132 stands on the lower edge of the bow area outer plate 131 close to the centerline of the hull, and the bow longitudinal girder plate sub-unit 133 stands between the outer plate longitudinal bone 132 and the upper edge of the bow area outer plate 131. The transverse bulkhead sub-unit 135 is located at the stern end edge of the bow area outer plate 131, including a bulkhead plate standing on the bow area outer plate 131 and perpendicular to the bow and stern direction. The bow area outer plate 131 is consistent with the internal seams of the rib frame sub-unit 134 and the transverse bulkhead sub-unit 135 in the width direction or is offset in the same direction.

[0066] S4, making the inner bottom and closing the middle assembly 1;

[0067] Arrange flat high and low tire frames on the construction site, such as Figure 7 As shown, the inner bottom plate structure 14 is hoisted as the base surface, and the main engine pit middle assembly 11, the stern outer plate middle assembly 12, the bow outer plate middle assembly 13, the middle outer bottom plate 15 and the remaining small groups are hoisted on the surface in sequence to form the entire inner bottom closing middle assembly 1. This step is a reverse construction, the inner bottom plate structure 14 is set at the bottom, and then each middle assembly is welded to the inner bottom plate structure 14, thereby reducing the overhead welding operation. After the assembly is completed, the entire inner bottom closing middle assembly 1 is turned over, so that the inner bottom plate structure 14 is located at the top, and then the transverse bulkhead assembly 3 and the outer plate middle assembly 2 above the inner bottom are hoisted in sequence.

[0068] The stern outer panel assembly 12 is located on the left and right sides of the main engine pit assembly 11, the middle outer bottom plate 15 covers the surface of the main engine pit assembly 11 and connects the stern area outer plates 121 of the stern outer panel assembly 12 on both sides, and the bow outer panel assembly 13 is connected to the bow end of the stern outer panel assembly 12.

[0069] Furthermore, the flat high and low tire frame is a rigid tire frame, and the main engine pit area is arranged at a height higher than the inner bottom plate area to ensure the overall levelness of the segment.

[0070] Further, the middle outer bottom plate 15 is the remaining unmade part of the stern outer plate assembly 12, and is loosely pasted after the remaining structures are hoisted and completed. Generally, the width direction is a single row of plates, and the length direction is one or two rows of plates.

[0071] S5, make two inner bottoms opposite to each other on the left and right sides and assemble them into outer panels;

[0072] Arrange the curved tire frame on the construction site, such as Figure 8 As shown, the outer plate structure 21 above the inner bottom is hoisted as the base surface, and the rib assembly 22, the horizontal girder assembly 23, the high and low seabed door assembly 24, the side transverse bulkhead assembly 25 and the remaining small groups are hoisted in sequence and welded to form the outer plate middle assembly 2 above the inner bottom.

[0073] S6, completion of segmental assembly;

[0074] Arrange the gantry on the construction site, such as Fig. 9 As shown, the inner bottom closing middle assembly 1 is turned over and hoisted to the gantry, and the surface of the inner bottom plate structure 14 away from the stern outer plate middle assembly 12 is adjusted upward and leveled by using a total station or other measures. The outer plate middle assembly 2 above the inner bottom, the transverse bulkhead assembly 3 and the remaining small assembly are hoisted in sequence and welded to form a complete segment.

[0075] The lower edges of the inner bottom outer plate structure 21 of the two inner bottom outer plate middle assemblies 2 are respectively connected to the upper left and right edges of the inner bottom folding middle assembly 1, and the transverse bulkhead assembly 3 is vertically installed at the bow end of the inner bottom folding middle assembly 1, and the left and right edges of the transverse bulkhead assembly 3 are connected to the bow end of the inner bottom outer plate structure 21 of the inner bottom outer plate middle assembly 2.

[0076] Furthermore, the gantry is a supporting structure, which is generally arranged in a row of 4-6 meters along the length of the ship and is used for segmented closure and completion.

[0077] Embodiment 2

[0078] Based on the construction method in the first embodiment, this embodiment provides a cabin bottom section, which includes:

[0079] An inner bottom closing middle assembly 1, wherein the upper surface of the inner bottom closing middle assembly 1 is a plane and a transverse bulkhead assembly 3 and two inner bottom upper outer plate middle assemblies 2 opposite to each other are installed on the upper surface;

[0080] The inner bottom upper outer plate middle assembly 2 includes an inner bottom upper outer plate structure 21 and a rib assembly 22, a horizontal girder assembly 23, a high and low seabed door assembly 24, and a side transverse bulkhead assembly 25 installed on the inner surface of the inner bottom upper outer plate structure 21;

[0081] The lower edges of the inner bottom outer plate structure 21 of the two inner bottom outer plate middle assemblies 2 are respectively connected to the upper left and right edges of the inner bottom folding middle assembly 1, and the transverse bulkhead assembly 3 is vertically installed at the bow end of the inner bottom folding middle assembly 1, and the left and right edges of the transverse bulkhead assembly 3 are connected to the bow end of the inner bottom outer plate structure 21 of the inner bottom outer plate middle assembly 2.

[0082] Furthermore, the inner bottom folding middle assembly 1 includes an inner bottom plate structure 14, and a main engine pit middle assembly 11, a stern outer plate middle assembly 12, and a bow outer plate middle assembly 13 installed on the lower surface of the inner bottom plate structure 14;

[0083] The stern outer plate middle assembly 12 is located on the left and right sides of the main engine pit middle assembly 11, the middle outer bottom plate 15 covers the lower surface of the main engine pit middle assembly 11 and connects the stern outer plate middle assembly 12 on both sides, and the bow outer plate middle assembly 13 is connected to the bow end of the stern outer plate middle assembly 12.

[0084] Furthermore, the main engine pit assembly 11 includes a stacked upper platform subassembly 111 and a lower platform subassembly 112, and a rib subassembly 113 and a longitudinal subassembly 114 are respectively located at two ends of the upper platform subassembly 111 along the bow and stern directions.

[0085] Furthermore, the stern outer plate assembly 12 includes a stern area outer plate 121, a main engine base longitudinal girder subassembly 122, and a stern longitudinal girder plate subassembly 123.

[0086] The main engine base longitudinal girder group 122 includes a vertically arranged main engine base longitudinal girder plate 1221, and a trapezoidal distal center rib frame 1222 arranged along the bow and stern direction and fixed on the same side of the main engine base longitudinal girder plate 1221, and a plurality of trapezoidal distal center rib frames 1222 are connected in series by an inner bottom lower flat steel 1223 parallel to the main engine base longitudinal girder plate 1221.

[0087] The stern longitudinal truss plate group 123 includes a vertically arranged longitudinal truss plate 1231 and a fan-shaped distal rib frame 1232 fixed to the same side of the longitudinal truss plate 1231 and arranged along the bow and stern direction.

[0088] The stern area outer plate 121 is a curved plate that gradually converges toward the centerline of the hull from top to bottom; the main engine base longitudinal girder group stand 122 is erected on the lower edge of the stern area outer plate 121 close to the centerline of the hull, and the stern longitudinal girder plate group stand 123 is erected between the main engine base longitudinal girder group stand 122 and the upper edge of the stern area outer plate 121.

[0089] The main engine base longitudinal girder plate 1221 of the main engine base longitudinal girder group 122 and the longitudinal girder plate 1231 of the stern longitudinal girder plate group 123 are both vertically arranged and parallel to the bow and stern directions. The longitudinal girder plate 1231 of the stern longitudinal girder plate group 123 is in contact with the trapezoidal far middle rib frame 1222 of the main engine base longitudinal girder group 122, and the lower edge of the trapezoidal far middle rib frame 1222 and the lower edge of the fan-shaped far middle rib frame 1232 are both adapted to fit the surface of the stern area outer plate 121.

[0090] Furthermore, the bow outer plate assembly 13 includes a bow area outer plate 131 , an outer plate longitudinal bone 132 , a bow longitudinal girder plate subassembly 133 , a rib frame subassembly 134 , and a transverse bulkhead subassembly 135 .

[0091] The bow area outer plate 131 is a curved plate that gradually converges toward the centerline of the hull from top to bottom, the outer plate longitudinal bone 132 stands on the lower edge of the bow area outer plate 131 close to the centerline of the hull, and the bow longitudinal girder plate subgroup stand 133 stands between the outer plate longitudinal bone 132 and the upper edge of the bow area outer plate 131. The transverse bulkhead subgroup stand 135 is located at the stern end edge of the bow area outer plate 131, including a bulkhead plate standing on the bow area outer plate 131 and perpendicular to the bow and stern direction.

[0092] In summary, the present invention provides a cabin bottom section and a construction method thereof, which divides the entire cabin bottom section into an inner bottom folding middle assembly, an outer plate middle assembly above the inner bottom, and a transverse bulkhead assembly; at the same time, the inner bottom folding middle assembly is reasonably divided into a plurality of middle assemblies such as a main engine pit middle assembly, a stern left and right outer plate middle assembly, and a bow left and right outer plate middle assembly, and the operation mode is changed from series construction to parallel construction, which is convenient for coordinating site resources to organize production and reduce the occupation of cranes in the main operation area; the narrow space operation is changed to an open space operation, which is convenient for construction and reduces the operation of scattered outer plate overhead welding, thereby reducing the construction difficulty. This construction method achieves the purpose of rapid segmented construction of the main engine pit, production according to the beat, and improved production efficiency.

[0093] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A method for constructing a cabin bottom section, characterized in that: The steps include: S1, assembling in the host pit; S2. Make two stern outer panels facing each other on the left and right and assemble them; S3, make two left and right opposite bow outer plates and assemble them; S4, making the inner bottom and assembling it; Arrange a flat high and low cradle on the construction site, hoist the inner bottom plate structure as the base surface, and hoist the main engine pit, assemble it in the stern outer plate, assemble it in the bow outer plate, and install the middle outer bottom plate to form the whole inner bottom folding and assembling; The stern outer panel is assembled on the left and right sides of the main engine pit, the middle outer bottom plate covers the lower surface of the main engine pit away from the inner bottom plate structure and connects the stern area outer panels assembled in the stern outer panel on both sides, and the bow outer panel is assembled and connected to the bow end of the stern outer panel.

2. The method for constructing a cabin bottom section according to claim 1, characterized in that: Step S1 comprises: arranging a flat frame on the construction site, hoisting an upper platform sub-assembly as a base surface, hoisting a lower platform sub-assembly, a rib sub-assembly, and a longitudinal sub-assembly in sequence, and installing them to form an assembly in the main engine pit; the upper platform sub-assembly and the lower platform sub-assembly both comprise a flat plate, a longitudinal girder assembly, and a left and right rib plate assembly, the longitudinal girder assembly and the left and right rib plate assembly are vertically erected on the flat plate, a plurality of left and right rib plate assemblies are arranged along the bow and stern directions, the longitudinal girder assembly is located on the center line of the flat plate and is perpendicular to the left and right rib plate assemblies; the upper platform sub-assembly and the lower platform sub-assembly are stacked, and the rib plate sub-assembly and the longitudinal sub-assembly are respectively located at the two ends of the upper platform sub-assembly along the bow and stern directions.

3. The method for constructing a cabin bottom section according to claim 1, characterized in that: Step S2 includes: arranging a curved surface frame on the construction site, hoisting the stern area outer plate as the base surface, and sequentially hoisting the main engine base longitudinal girder subassembly and the stern longitudinal girder plate subassembly to form the stern outer plate middle assembly; The main engine base longitudinal girder group includes a vertically arranged main engine base longitudinal girder plate, and a trapezoidal distal middle rib frame fixed to the same side of the main engine base longitudinal girder plate and arranged along the bow and stern direction, and the inner bottom lower flat steel parallel to the main engine base longitudinal girder plate connects a plurality of trapezoidal distal middle rib frames in series; the stern longitudinal girder plate group includes a vertically arranged longitudinal girder plate, and a fan-shaped distal middle rib frame fixed to the same side of the longitudinal girder plate and arranged along the bow and stern direction; The outer plate of the stern area is a curved plate that gradually converges toward the centerline of the hull from top to bottom; the main engine base longitudinal girder group stands on the lower edge of the outer plate of the stern area close to the centerline of the hull, and the stern longitudinal girder plate group stands between the main engine base longitudinal girder group stands and the upper edge of the outer plate of the stern area; the main engine base longitudinal girder plates of the main engine base longitudinal girder group stands and the longitudinal girder plates of the stern longitudinal girder plate group stands are both vertically arranged and parallel to the bow and stern directions; the longitudinal girder plates of the stern longitudinal girder plate group stands are in contact with the trapezoidal distal center rib frame of the main engine base longitudinal girder group stands, and the lower edge of the trapezoidal distal center rib frame and the lower edge of the fan-shaped distal center rib frame are both adapted to fit the surface of the outer plate of the stern area.

4. The method for constructing a cabin bottom section according to claim 1, characterized in that: Step S3 includes: arranging a curved cradle on the construction site, hoisting the bow area outer plate as the base surface, and sequentially hoisting the outer plate longitudinal bone, the bow longitudinal girder plate subassembly, the rib frame subassembly, and the transverse bulkhead subassembly to form the bow outer plate middle assembly; The outer plate in the bow area is a curved plate that gradually converges toward the center line of the hull from top to bottom; the outer plate longitudinal bone is erected at the lower edge of the outer plate in the bow area close to the center line of the hull, and the bow longitudinal girders are erected between the outer plate longitudinal bone and the upper edge of the outer plate in the bow area; the transverse bulkhead group is erected at the stern end edge of the outer plate in the bow area.

5. The method for constructing a cabin bottom section according to claim 1, characterized in that: The following steps are also included: S5, making two inner bottoms opposite to each other on the left and right and assembling them on the outer plate; Arrange the curved cradle on the construction site, hoist the outer plate structure above the inner bottom as the base surface, and sequentially hoist the rib assembly, horizontal girder assembly, high and low seabed door assembly, side transverse bulkhead assembly and other small assembly, and weld to form the outer plate middle assembly above the inner bottom; S6, completion of segmental assembly; Arrange the gantry on the construction site, turn over and hoist the inner bottom closing middle assembly to the gantry, adjust the inner bottom plate structure away from the stern outer plate middle assembly surface upward and ensure it is level, hoist the outer plate middle assembly above the inner bottom and the transverse bulkhead assembly in turn, and weld them to form a complete section; The lower edges of the two outer plates above the inner bottom are respectively connected to the upper left and right edges of the inner bottom. The transverse bulkhead assembly is vertically installed on the upper edge of the bow end assembled in the inner bottom. The left and right edges of the transverse bulkhead assembly are connected to the bow end assembled in the outer plates above the inner bottom.

6. A cabin bottom section, characterized in that: The cabin bottom section includes an inner bottom folding middle assembly, the upper surface of the inner bottom folding middle assembly is a plane and the upper surface is installed with a transverse bulkhead assembly and two inner bottom upper outer plate middle assemblies opposite to each other on the left and right; The lower edges of the inner bottom upper outer plate structures assembled in the two inner bottom upper outer plates are respectively connected to the upper left and right edges of the inner bottom folded assembly, the transverse bulkhead assembly is vertically installed on the upper edge of the bow end assembled in the inner bottom folded assembly, and the left and right edges of the transverse bulkhead assembly are connected to the bow end assembled in the inner bottom upper outer plate.

7. The cabin bottom section according to claim 6, characterized in that: The inner bottom folding middle assembly includes an inner bottom plate structure, and a main engine pit middle assembly, a stern outer plate middle assembly, and a bow outer plate middle assembly installed on the lower surface of the inner bottom plate structure; The stern outer plate assembly is located on the left and right sides of the main engine pit assembly, the middle outer bottom plate covers the lower surface of the main engine pit assembly away from the inner bottom plate structure and connects the stern outer plate assembly on both sides, and the bow outer plate assembly is connected to the bow end of the stern outer plate assembly.

8. The nacelle bottom section according to claim 7, characterized in that: The main engine pit assembly includes a stacked upper platform sub-assembly and a lower platform sub-assembly, and the rib sub-assembly and the longitudinal sub-assembly are respectively located at two ends of the upper platform sub-assembly along the bow and stern directions.

9. The cabin bottom section according to claim 7, characterized in that: The stern outer plate assembly includes the stern area outer plate, the main engine base longitudinal girder assembly, and the stern longitudinal girder plate assembly; The main engine base longitudinal girder group includes a vertically arranged main engine base longitudinal girder plate, and a trapezoidal distal middle rib frame fixed to the same side of the main engine base longitudinal girder plate and arranged along the bow and stern direction, and the inner bottom lower flat steel parallel to the main engine base longitudinal girder plate connects a plurality of trapezoidal distal middle rib frames in series; the stern longitudinal girder plate group includes a vertically arranged longitudinal girder plate, and a fan-shaped distal middle rib frame fixed to the same side of the longitudinal girder plate and arranged along the bow and stern direction; The stern area outer plate is a curved plate that gradually converges toward the centerline of the hull from top to bottom; the main engine base longitudinal girder group stands on the lower edge of the stern area outer plate close to the centerline of the hull, and the stern longitudinal girder plate group stands between the main engine base longitudinal girder group and the upper edge of the stern area outer plate; The main engine base longitudinal truss plates of the main engine base longitudinal truss group and the longitudinal truss plates of the stern longitudinal truss plate group are both vertically arranged and parallel to the bow and stern directions; the longitudinal truss plates of the stern longitudinal truss plate group are in contact with the trapezoidal distal center rib frame of the main engine base longitudinal truss group, and the lower edge of the trapezoidal distal center rib frame and the lower edge of the fan-shaped distal center rib frame are both adapted to fit the surface of the outer plate of the stern area.

10. The cabin bottom section according to claim 7, characterized in that: The bow shell assembly includes the bow area shell, shell longitudinals, bow longitudinal girder subassembly, rib frame subassembly, and transverse bulkhead subassembly; The outer plate in the bow area is a curved plate that gradually converges toward the center line of the hull from top to bottom. The outer plate longitudinal bone is erected at the lower edge of the outer plate in the bow area close to the center line of the hull. The bow longitudinal girders are erected between the outer plate longitudinal bone and the upper edge of the outer plate in the bow area. The transverse bulkhead group is erected at the stern edge of the outer plate in the bow area.

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