Bulbous bow subassembly support device and installation method of bulbous bow subassembly

Abstract

This application relates to the field of shipbuilding, and particularly to a support device for a bulbous bow subassembly and an installation method for the bulbous bow subassembly. The support device for the bulbous bow subassembly is used to support the bulbous bow subassembly. The bulbous bow subassembly includes a bulbous bow side subassembly and a deck side subassembly. The deck side subassembly includes a bottom subassembly, a middle deck subassembly, and an upper deck subassembly that are arranged in sequence along the height direction. The support device for the bulbous bow subassembly includes a first support portion and a second support portion; the first support portion is connected to the deck side subassembly; the first support portion includes a first support body and inclined support columns. Inclined support columns are correspondingly installed on the left and right sides of the bottom surface of the bottom subassembly, and the intersection point of the extension lines of the axes of the correspondingly arranged inclined support columns is higher than the center of gravity of the bottom subassembly; the second support portion is connected to the bulbous bow side subassembly. By separately providing the first support portion and the second support portion to support the bulbous bow side subassembly and the deck side subassembly, and arranging inclined support columns for the deck side subassembly, the support stability is improved in this application.

Description

Technical Field

[0001] The present application relates to the field of shipbuilding, and particularly to a support device for a bulbous bow sub-assembly and an installation method for the bulbous bow sub-assembly. Background Art

[0002] For medium and large-sized ships with medium to high speeds, the hull plating line shape in the entire bow area is relatively large, and its cross-section presents a slender and tall shape. Its bottom is usually higher than the hull baseline, and the longitudinal keel extends out of the hull plating. It contains multiple deck structures inside to improve the overall strength of the bow area. Generally, such ships have a relatively long bulbous bow structure, and the bow and the inside of the bulbous bow are usually the forepeak tanks for adjusting the floating state of the ship.

[0003] The bulbous bow sub-assembly includes a bulbous bow side sub-section and a deck side sub-section. During the general assembly construction and the on-board construction of the bulbous bow sub-assembly, it is necessary to support the bulbous bow sub-assembly. However, the existing support structures do not support the bulbous bow side sub-section and the deck side sub-section according to their different structural characteristics, resulting in problems such as relatively poor stability or relatively heavy weight. Summary of the Invention

[0004] The purpose of the present application is to provide a support device for a bulbous bow sub-assembly and an installation method for the bulbous bow sub-assembly to achieve stable support for the bulbous bow sub-assembly.

[0005] The present application provides a support device for a bulbous bow sub-assembly for supporting the bulbous bow sub-assembly. The bulbous bow sub-assembly includes a bulbous bow side sub-section and a deck side sub-section. The deck side sub-section includes a bottom sub-section, a middle deck sub-section, and an upper deck sub-section arranged in sequence along the height direction. The support device for the bulbous bow sub-assembly includes a first support portion and a second support portion;

[0006] The first support portion is connected to the deck side sub-section to support the deck side sub-section. The first support portion includes a first support main body and inclined support columns. The inclined support columns are correspondingly installed on the left and right sides of the bottom surface of the bottom sub-section, and the intersection point of the extension lines of the axes of the correspondingly arranged inclined support columns is higher than the center of gravity of the bottom sub-section;

[0007] The second support portion is connected to the bulbous bow side sub-section to support the bulbous bow side sub-section.

[0008] In the above technical solution, further, the first support main body includes a plurality of first support frames;

[0009] The plurality of first support frames are arranged at intervals along the ship length direction, and the positions of the first support frames correspond to the positions of the rib positions of the deck side sub-section;

[0010] The first support frame near the head end of the deck side section has a first preset distance from the head end of the deck side section, and the first support frame near the tail end of the deck side section has a second preset distance from the tail end of the deck side section; the first preset distance and the second preset distance are between one-third and one-fourth of the length of the deck side section;

[0011] The inclined support column is correspondingly arranged with the first support frame. The bottom end of the inclined support column is connected to the first support frame, and the top end of the inclined support column is connected to the bottom section.

[0012] In the above technical solution, further, the first support frame includes a first bottom connecting beam, a first bottom support assembly, and a first side support assembly;

[0013] The first bottom support assemblies are correspondingly installed on the left and right sides of the bottom surface of the bottom section. The first bottom support assembly includes a first bottom vertical support column and a first bottom support tooling. The first bottom support tooling is located at the top end of the first bottom vertical support column, and the first bottom support tooling is connected to the bottom section;

[0014] The first side support assemblies are correspondingly installed on the left and right sides of the middle deck section. The first side support assembly includes a first side vertical support column and a first side support tooling. The first side support tooling is located at the top end of the first side vertical support column, and the first side support tooling is connected to the middle deck section;

[0015] The length direction of the first bottom connecting beam is the ship width direction. The bottom end of the inclined support column, the bottom end of the first bottom vertical support column, and the bottom end of the first side vertical support column are connected to the first bottom connecting beam.

[0016] In the above technical solution, further, the first support frame further includes an inclined strengthening beam;

[0017] An inclined strengthening beam is arranged on the side of the first side vertical support column away from the middle deck section. The bottom of the inclined strengthening beam is connected to the first bottom connecting beam, and the top of the inclined strengthening beam is connected to the first side vertical support column. And the intersection point of the extended axis of the corresponding inclined strengthening beam is higher than the center of gravity of the middle deck section and the center of gravity of the support bulbous bow section.

[0018] In the above technical solution, further, the second support portion includes a plurality of second support frames;

[0019] A plurality of the second support frames are arranged at intervals along the ship length direction, and the positions of the second support frames correspond to the positions of the rib positions of the bulbous bow side section;

[0020] The second support frame near the head end of the bulbous bow side section has a third preset distance from the head end of the bulbous bow side section, and the second support frame near the tail end of the bulbous bow side section has a fourth preset distance from the tail end of the bulbous bow side section;

[0021] The third preset distance and the fourth preset distance are between one-third and one-fourth of the length of the bulbous bow side section.

[0022] In the above technical solution, further, the second support frame includes a second bottom connecting beam, a second bottom support assembly, and a second side support assembly;

[0023] The second bottom support assemblies are correspondingly installed on the left and right sides of the bottom of the bulbous bow side section. The second bottom support assembly includes a second bottom vertical support column and a second bottom support tooling. The second bottom support tooling is located at the top end of the second bottom vertical support column, and the second bottom support tooling is connected to the bottom of the bulbous bow side section;

[0024] The second side vertical support assemblies are correspondingly installed on the left and right side portions of the bulbous bow side section. The second side vertical support assembly includes a second side vertical support column and a second side support tooling. The second side support tooling is located at the top end of the second side vertical support column, and the second side support tooling is connected to the side portion of the bulbous bow side section;

[0025] The length direction of the second bottom connecting beam is the ship width direction, and the bottom ends of the second bottom vertical support column and the second side vertical support column are connected to the second bottom connecting beam.

[0026] In the above technical solution, further, the first bottom support assembly deviates from the centerline keel of the bulbous bow total section by 0.5 m to 1.5 m; the second bottom support assembly deviates from the centerline keel of the bulbous bow total section by 0.5 m to 1.5 m.

[0027] In the above technical solution, further, bottom strengthening connectors and diagonal strengthening connectors are provided between adjacent first support frames, between adjacent second support frames, and between adjacent first support frames and second support frames;

[0028] The length direction of the bottom strengthening connector is the ship length direction, and the diagonal strengthening connector has projections in the ship length direction and the ship height direction.

[0029] In the above technical solution, further, a heightening base is further included;

[0030] The heightening base includes a plurality of cradles, the plurality of cradles are arranged at intervals along the ship length direction, and the plurality of cradles are arranged corresponding to the first support frame and the second support frame, and both the first support frame and the second support frame are detachably connected to the cradles.

[0031] The present application also provides an installation method for a bulbous bow sub-assembly, which is applied to the bulbous bow sub-assembly support device described in the above solution. The method includes:

[0032] Step 1, perform overall assembly and construction on the bulbous bow sub-assembly;

[0033] Step 1.1, construct the bulbous bow sub-assembly support device;

[0034] Step 1.2, transport the deck side section and the bulbous bow side section to the bulbous bow sub-assembly support device respectively;

[0035] Step 1.3, weld the bulbous bow sub-assembly support device to the bulbous bow sub-assembly;

[0036] Step 2, hoist the bulbous bow sub-assembly welded with the first support part and the second support part out of the dock;

[0037] Step 3, perform mating construction on the bulbous bow sub-assembly.

[0038] Compared with the prior art, the beneficial effects of the present application are:

[0039] For the bulbous bow sub-assembly support device provided by the present application, by respectively arranging the first support part and the second support part to support the bulbous bow side section and the deck side section respectively, and arranging inclined support columns for the relatively higher deck side section, the bulbous bow sub-assembly can be prevented from tipping over, thereby improving the support stability.

[0040] The present application also provides an installation method for a bulbous bow sub-assembly, which is applied to the bulbous bow sub-assembly support device described in the above solution. Based on the above analysis, it can be seen that the installation method of the bulbous bow sub-assembly also has the above beneficial effects, and can reuse the first support part and the second support part, improving the utilization rate of the device and the construction efficiency. Description of the Drawings

[0041] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0042] Figure 1The first structural schematic diagram of the bulbous bow total section support device provided by this application;

[0043] Figure 2 The second structural schematic diagram of the bulbous bow total section support device provided by this application;

[0044] Figure 3 The structural schematic diagram of the first support frame provided by this application;

[0045] Figure 4 The structural schematic diagram of the second support frame provided by this application;

[0046] Figure 5 The distribution schematic diagram of the jig provided by this application.

[0047] In the figure: 101 - bulbous bow side section; 102 - deck side section; 103 - bottom section; 104 - middle deck section; 105 - upper deck section; 106 - center of gravity of the bottom section; 107 - inclined support column; 108 - first support frame; 109 - first bottom connecting beam; 110 - first bottom support assembly; 111 - first side support assembly; 112 - middle longitudinal keel; 113 - first bottom vertical support column; 114 - first bottom support tooling; 115 - first side vertical support column; 116 - first side support tooling; 117 - defect part; 118 - inclined strengthening beam; 119 - center of gravity of the middle deck section; 120 - center of gravity of the support bulbous bow total section; 121 - second support frame; 122 - second bottom connecting beam; 123 - second bottom support assembly; 124 - second side support assembly; 125 - second bottom vertical support column; 126 - second bottom support tooling; 127 - second side vertical support column; 128 - second side support tooling; 129 - diagonal strengthening connecting piece; 130 - bottom strengthening connecting piece; 131 - jig. Detailed implementation manners

[0048] Next, the technical solutions of this application will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0049] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0050] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0051] Embodiment 1

[0052] See Figures 1 to 5 As shown, the bulbous bow sub-assembly support device provided by the present application is used to support the bulbous bow sub-assembly. Based on the characteristics that the outer plate line type in the entire bow area is large and higher than the hull baseline, the appropriate area of the bow and the bulbous bow are usually constructed as sub-assemblies and then launched and assembled in the dry dock to avoid the problem of low dry dock assembly efficiency caused by separately launching and assembling all the sub-assemblies inside the sub-assembly.

[0053] For the method of cutting the spatial boundary of the sub-assembly, the following sub-assembly division method is selected: In the length direction of the ship, taking the position of the appropriate rib position of the bow as the boundary, all the structures in the bow area are divided into a separate sub-assembly, that is, the bulbous bow sub-assembly. Specifically, in the width direction of the ship, the bulbous bow sub-assembly includes all structures; in the height direction of the ship, the top is selected to be separated from the other sub-assemblies above at an appropriate deck position to avoid the safety problem of the bulbous bow sub-assembly tipping over due to excessive height. The A direction shown in the drawings is the length direction of the ship, the B direction is the width direction of the ship, and the C direction is the height direction of the ship.

[0054] The division method of dividing the bulbous bow sub-assembly into sub-assemblies is as follows: In the length direction of the ship, the bulbous bow sub-assembly includes a bulbous bow side sub-assembly 101 and a deck side sub-assembly 102. The bulbous bow side sub-assembly 101, as a closed large line type structure, is divided into a separate sub-assembly for construction; the deck side sub-assembly 102 includes a bottom sub-assembly 103, a middle deck sub-assembly 104, and an upper deck sub-assembly 105 arranged in sequence along the height direction. Among them, the middle deck sub-assembly 104 can be further divided into two layers of middle sub-assemblies.

[0055] As Figure 1As shown, compared with the bulbous bow side section 101, the deck side section 102 has a relatively high height, a relatively large volume and weight, and a support structure needs to be correspondingly arranged according to the structures of the bulbous bow side section 101 and the deck side section 102. Specifically, the bulbous bow total section support device includes a first support portion, and the first support portion is connected to the deck side section 102 to support the deck side section 102. The first support portion includes a first support main body and inclined support columns 107, and the first support main body is the main structure for supporting the deck side section 102. In order to prevent the deck side section 102 from tilting, inclined support columns 107 are correspondingly installed on both the left and right sides of the bottom surface of the bottom section 103 of the deck side section 102 (with the forward direction of the ship as the front, the left and right are the left and right directions of the ship, which will not be elaborated below). The inclined support columns 107 are symmetrically arranged on both sides of the bottom section 103 with respect to the centerline keel 112, and the intersection point of the extension lines of the axes of the correspondingly arranged inclined support columns 107 is higher than the center of gravity 106 of the bottom section to ensure the stability of the support.

[0056] Furthermore, the bulbous bow total section support device further includes a second support portion, and the second support portion is connected to the bulbous bow side section 101 to support the bulbous bow side section 101.

[0057] In an optional solution of this embodiment, the first support main body includes a plurality of first support frames 108; the plurality of first support frames 108 are arranged at intervals along the ship length direction, and the positions of the first support frames 108 correspond to the positions of the rib positions of the deck side section 102. Figure 1 It shows that two first support frames 108 support the deck side section 102. When the number of the first support frames 108 is more than two, the plurality of first support frames 108 are usually arranged at uniform intervals to ensure stable support for all parts of the deck side section 102.

[0058] Generally speaking, the first support frame 108 near the head end of the deck side section 102 has a first preset distance from the head end of the deck side section 102, and the first support frame 108 near the tail end of the deck side section 102 has a second preset distance from the tail end of the deck side section 102; the first preset distance and the second preset distance are between one-third and one-fourth of the length of the deck side section 102. In practical applications, the positions of the first support frames 108 can be specifically arranged according to the weight distribution of the deck side section 102.

[0059] The inclined support column 107 is correspondingly arranged with the first support frame 108, that is, an inclined support column 107 with its top inclined towards the ship side is arranged at each first support frame 108. The top of the inclined support column 107 is connected to the bottom section 103, and the bottom of the inclined support column 107 is connected to the first support frame 108. The inclined support column 107 has projections in the ship width direction and the ship height direction to stably support the deck side section 102 and prevent it from toppling.

[0060] In an optional solution of this embodiment, referring to Figure 1 and Figure 3 as shown, the first support frame 108 includes a first bottom connecting beam 109, a first bottom support assembly 110, and a first side support assembly 111.

[0061] Since the bottom of the bulbous bow section is higher than the hull baseline and the longitudinal keel 112 extends out of the hull outer plate, in order to prevent the longitudinal keel 112 from being damaged, the first bottom support assemblies 110 are correspondingly installed on the left and right sides of the bottom surface of the bottom section 103, that is, the first bottom support assemblies 110 support the deck side section 102 on both sides of the longitudinal keel 112. Specifically, the first bottom support assembly 110 is offset from the longitudinal keel 112 of the bulbous bow section by 1.5 m to 2.5 m.

[0062] Specifically, referring to Figure 3 as shown, the first bottom support assembly 110 includes a first bottom vertical support column 113 and a first bottom support tooling 114. The first bottom support tooling 114 is located at the top of the first bottom vertical support column 113, and the first bottom support tooling 114 is connected to the bottom section 103. The first bottom support tooling 114 includes a horizontally connected plate and a vertically connected plate, and the horizontally connected plate and the vertically connected plate are connected to form a radian adapted to the contour of the bottom section 103, so that the first bottom support tooling 114 is reliably connected to the bottom section 103.

[0063] Since the bulbous bow section has a large hull form and the deck side section 102 presents a slender and tall shape, during the general assembly process of the bottom section 103 of the bulbous bow section, necessary side anti-tilting supports need to be designed. Specifically, the first side support assemblies 111 are correspondingly installed on the left and right sides of the middle deck section 104. The first side support assembly 111 includes a first side vertical support column 115 and a first side support tooling 116. The first side support tooling 116 is located at the top of the first side vertical support column 115, and the first side support tooling 116 is connected to the middle deck section 104. The structure of the first side support tooling 116 is similar to that of the first bottom support tooling 114, and the first side support tooling 116 also forms a radian adapted to the contour of the middle deck section 104 to achieve reliable connection with the middle deck section 104. The difference lies in the different support positions, which will not be elaborated here.

[0064] The length direction of the first bottom connecting beam 109 is the ship width direction, and the bottom ends of the inclined support columns 107, the first bottom vertical support columns 113, and the first side vertical support columns 115 are connected to the first bottom connecting beam 109 to improve the overall stability of the first support frame 108. Figure 3 As shown, the first bottom connecting beam 109 is provided with a notch 117 at a position corresponding to the middle longitudinal keel 112 to avoid interference with the middle longitudinal keel 112 .

[0065] For the area with multiple deck segments above the bottom segment 103, based on weight factors, since the length of the first side vertical support column 115 is relatively long, in order to ensure that it does not bend or buckle under vertical force, in an optional scheme of this embodiment, the first support frame 108 also includes an inclined reinforcement beam 118; an inclined reinforcement beam 118 is arranged on the side of the first side vertical support column 115 away from the middle deck segment 104, the bottom of the inclined reinforcement beam 118 is connected to the first bottom connecting beam 109, and the top of the inclined reinforcement beam 118 is connected to the first side vertical support column 115, and the intersection of the extended axis of the corresponding inclined reinforcement beam 118 is higher than the center of gravity 119 of the middle deck segment and the center of gravity 120 of the supporting bulbous bow section to ensure the stability of the support.

[0066] See also Figure 1 and Figure 4 As shown, in an optional solution of this embodiment, the second support portion includes a plurality of second support frames 121; the plurality of second support frames 121 are arranged at intervals along the length direction of the ship, and the positions of the second support frames 121 correspond to the positions of the rib positions of the bulbous bow side section 101. Figure 1 , two second support frames 121 are shown to support the bulbous bow side section 101. When the number of second support frames 121 exceeds two, the plurality of second support frames 121 are usually evenly spaced to ensure that all parts of the bulbous bow side section 101 can be stably supported.

[0067] Generally speaking, the second support frame 121 near the head end of the bulbous bow side segment 101 has a third preset distance from the head end of the bulbous bow side segment 101, and the second support frame 121 near the tail end of the bulbous bow side segment 101 has a fourth preset distance from the tail end of the bulbous bow side segment 101; the third preset distance and the fourth preset distance are between one third and one quarter of the length of the bulbous bow side segment 101.

[0068] In practical applications, the position of the second support frame 121 can be arranged according to the weight distribution of the bulbous bow side segment 101. For the front part of the bulbous bow side segment 101 with a relatively light weight, a relatively long third preset distance can be set, and for the rear part of the bulbous bow side segment 101 with a relatively heavy weight, a relatively short third preset distance can be set to enhance the support effect for the position with heavier weight.

[0069] Compared with the deck side section 102, the bulbous bow side section 101 has a relatively low height and a relatively light weight. Therefore, the second support frame 121 does not have the structure of the inclined support column 107, which can reduce the weight of the device and save costs.

[0070] In an optional solution of this embodiment, similar to the structure of the first support frame 108, the second support frame 121 includes a second bottom connecting beam 122, a second bottom support assembly 123, and a second side support assembly 124.

[0071] The second bottom support assemblies 123 are correspondingly installed on the left and right sides of the bottom of the bulbous bow side section 101 to support the bulbous bow side section 101. Specifically, the second bottom support assembly 123 is offset from the longitudinal keel of the total bulbous bow section by 1.25 m to 1.5 m.

[0072] See Figure 4 As shown, the second bottom support assembly 123 includes a second bottom vertical support column 125 and a second bottom support tooling 126. The second bottom support tooling 126 is located at the top of the second bottom vertical support column 125, and the second bottom support tooling 126 is connected to the bottom of the bulbous bow side section 101. The structure of the second bottom support tooling 126 is similar to the structure of the first bottom support tooling 114. The second bottom support tooling 126 forms an arc adapted to the contour of the bulbous bow side section 101 to achieve reliable connection with the bulbous bow side section 101.

[0073] To prevent the bulbous bow side section 101 from tipping to the left and right sides, second side support assemblies 124 are correspondingly installed on the left and right sides of the bulbous bow side section 101. The second side support assembly 124 includes a second side vertical support column 127 and a second side support tooling 128. The second side support tooling 128 is located at the top of the second side vertical support column 127, and the second side support tooling 128 is connected to the side of the bulbous bow side section 101. The second side support tooling 128 is similar to the first side support tooling 116 and will not be described in detail here.

[0074] Specifically, the steel plates selected for the first bottom support tooling 114, the first side support tooling 116, the second bottom support tooling 126, and the second side support tooling 128 are 16 mm to 30 mm thick.

[0075] Specifically, in the direction from the rear to the front, the distance between the bottom contour of the bulbous bow side section 101 and the hull baseline gradually increases, and the length of the second bottom vertical support column 125 needs to increase correspondingly. The length direction of the second bottom connecting beam 122 is the ship width direction. The bottom ends of the second bottom vertical support column 125 and the second side vertical support column 127 are connected to the second bottom connecting beam 122 to improve the overall stability of the second support frame 121. As Figure 4 shown, the bottom position of the bulbous bow side section 101 is relatively high, and there will be no interference problem between the midship keel 112 and the second bottom connecting beam 122. The second bottom connecting beam 122 does not need to be disconnected to avoid the midship keel 112, and the structure is more stable.

[0076] To further improve the overall stability of the bulbous bow subassembly support device, in an alternative solution of this embodiment, refer to Figure 1 and Figure 2 shown, bottom strengthening connectors 130 and diagonal strengthening connectors 129 are provided between adjacent first support frames 108, between adjacent second support frames 121, and between adjacent first support frames 108 and second support frames 121. Among them, the length direction of the bottom strengthening connector 130 is the ship length direction. Specifically, the bottom strengthening connector 130 can connect adjacent first bottom connecting beams 109, adjacent second bottom connecting beams 122, and adjacent first bottom connecting beams 109 and second bottom connecting beams 122.

[0077] The diagonal strengthening connector 129 has projections in the ship length direction and the ship height direction. Specifically, as Figure 1 shown, at the first support part, the diagonal strengthening connector 129 can connect the first bottom connecting beam 109 and the adjacent first side vertical support column 115; for the second support part and between the first support part and the second support part, the setting structure of the diagonal strengthening connector 129 is similar and will not be elaborated here.

[0078] The bulbous bow subassembly support device needs to meet the overall load-bearing requirements of the subassembly and the strength requirements during the test process. Therefore, the specifications of the device need to be further increased on the basis of meeting the overall weight of the supported subassembly. Specifically, the inclined support column 107, the first bottom vertical support column 113, the first side vertical support column 115, the inclined strengthening beam 118, the second bottom vertical support column 125, and the second side vertical support column 127 generally select I-beams with a specification of No. 25 and above. The second bottom connecting beam 122, the second bottom connecting beam 122, the bottom strengthening connector 130, and the diagonal strengthening connector 129 generally select I-beams with a specification of No. 20 and above.

[0079] Embodiment 2

[0080] The bulbous bow subassembly support device in the second embodiment is an improvement based on the above-mentioned embodiment. The technical content disclosed in the above-mentioned embodiment will not be repeatedly described, and the content disclosed in the above-mentioned embodiment also belongs to the content disclosed in the second embodiment.

[0081] In an alternative solution of this embodiment, the bulbous bow subassembly support device further includes a heightening base to raise the height of the bulbous bow subassembly for the convenience of construction workers.

[0082] Specifically, referring to Figure 5 As shown, the heightening base includes a plurality of cradles 131. The plurality of cradles 131 are arranged at intervals along the ship length direction, and the plurality of cradles 131 are correspondingly arranged with the first support frame 108 and the second support frame 121. Both the first support frame 108 and the second support frame 121 are detachably connected to the cradles 131. The plurality of cradles 131 can ensure the safe placement of each section and the overall safe placement of the bulbous bow subassembly, providing a solid support foundation for the overall assembly construction.

[0083] Generally, heightening bases with the same positions of the cradles 131 are arranged at the location of the overall assembly construction of the bulbous bow subassembly and at the shipyard where the bulbous bow subassembly is assembled and constructed. During the overall assembly construction of the bulbous bow subassembly, the first support part and the second support part provided on the heightening base can support the bulbous bow subassembly. After the overall assembly construction is completed, the bulbous bow subassembly welded with the first support part and the second support part can be hoisted off the dock, and the first support part and the second support part are connected to the cradles 131 on the dock, which can realize the universality of the first support part and the second support part, improve the utilization rate of the device, and the first support part and the second support part are reused, improving the construction efficiency.

[0084] Specifically, the cradle 131 is usually a cement dock pier with a single load-bearing capacity of 200 tons.

[0085] Embodiment Three

[0086] The third embodiment of the present application provides an installation method for a bulbous bow subassembly, which is applied to the bulbous bow subassembly support device in the above-mentioned embodiment. The method includes:

[0087] Step 1, perform the overall assembly construction of the bulbous bow subassembly;

[0088] Step 1.1, construct the bulbous bow subassembly support device; including the setting of the heightening base and the installation of the first support part and the second support part on the heightening base;

[0089] Step 1.2, transport the deck side section 102 and the bulbous bow side section 101 to the bulbous bow subassembly support device respectively;

[0090] First, lift and install the bottom section 103 of the deck side section 102 on the first support part, and then successively lift and install the middle deck section 104 and the upper deck section 105 above the bottom section 103, and make supports for multiple sections;

[0091] Lift and install the bulbous bow side section 101 on the second support part, and make supports.

[0092] Step 1.3, weld the first support part and the second support part of the bulbous bow assembly support device to the bulbous bow assembly;

[0093] Step 2, lift and lower the bulbous bow assembly welded with the first support part and the second support part into the dry dock, and connect the first support part and the second support part to the raised base at the dry dock, so as to realize the secondary utilization of the first support part and the second support part;

[0094] Step 3, carry out the construction of the bulbous bow assembly, and weld the bulbous bow assembly to other assemblies of the ship; after the whole ship is welded, the bulbous bow assembly support device can be disassembled.

[0095] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. In addition, those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means within the scope of the present application and forms different embodiments.

Claims

1. A bulbous bow subassembly support device for supporting a bulbous bow subassembly, the bulbous bow subassembly including a bulbous bow side subsegment and a deck side subsegment, the deck side subsegment including a bottom subsegment, a middle deck subsegment, and an upper deck subsegment sequentially arranged in the height direction, characterized in that, The bulbous bow block support device includes a first support part and a second support part; The first support part is connected to the deck side section to support the deck side section; the first support part includes a first support body and inclined support columns. The inclined support columns are correspondingly installed on the left and right sides of the bottom surface of the bottom section, and the intersection point of the extension lines of the axes of the correspondingly arranged inclined support columns is higher than the center of gravity of the bottom section; The second support part is connected to the bulbous bow side section to support the bulbous bow side section; The first support body includes a plurality of first support frames; The plurality of first support frames are arranged at intervals along the ship length direction, and the positions of the first support frames correspond to the positions of the rib positions of the deck side section; The first support frame near the head end of the deck side section has a first preset distance from the head end of the deck side section, and the first support frame near the tail end of the deck side section has a second preset distance from the tail end of the deck side section; the first preset distance and the second preset distance are between one-third and one-fourth of the length of the deck side section; The inclined support columns are correspondingly arranged with the first support frames. The bottom ends of the inclined support columns are connected to the first support frames, and the top ends of the inclined support columns are connected to the bottom section; The first support frame includes a first bottom connecting beam, a first bottom support assembly, and a first side support assembly; The first bottom support assemblies are correspondingly installed on the left and right sides of the bottom surface of the bottom section. The first bottom support assembly includes a first bottom vertical support column and a first bottom support tooling. The first bottom support tooling is located at the top end of the first bottom vertical support column, and the first bottom support tooling is connected to the bottom section; The first side support assemblies are correspondingly installed on the left and right sides of the middle deck section. The first side support assembly includes a first side vertical support column and a first side support tooling. The first side support tooling is located at the top end of the first side vertical support column, and the first side support tooling is connected to the middle deck section; The length direction of the first bottom connecting beam is the ship width direction. The bottom ends of the inclined support columns, the bottom ends of the first bottom vertical support columns, and the bottom ends of the first side vertical support columns are connected to the first bottom connecting beam.

2. The bulbous bow total section support device according to claim 1, characterized in that, The first support frame further includes an inclined strengthening beam; An inclined strengthening beam is arranged on the side of the first side vertical support column away from the middle deck section. The bottom of the inclined strengthening beam is connected to the first bottom connecting beam, and the top of the inclined strengthening beam is connected to the first side vertical support column. The intersection point of the extension lines of the axes of the correspondingly arranged inclined strengthening beams is higher than the center of gravity of the middle deck section and the center of gravity of the support bulbous bow block; 3. The bulbous bow subassembly support device according to claim 1, characterized in that, The second support part includes a plurality of second support frames; The plurality of second support frames are arranged at intervals along the ship length direction, and the positions of the second support frames correspond to the positions of the rib positions of the bulbous bow side section; The second support frame near the head end of the bulbous bow side section has a third preset distance from the head end of the bulbous bow side section, and the second support frame near the tail end of the bulbous bow side section has a fourth preset distance from the tail end of the bulbous bow side section; The third preset distance and the fourth preset distance are between one-third and one-fourth of the length of the bulbous bow side section.

4. The bulbous bow total section support device according to claim 3, characterized in that, The second support frame includes a second bottom connecting beam, a second bottom support assembly, and a second side support assembly; The second bottom support assemblies are correspondingly installed on the left and right sides of the bottom of the bulbous bow side section. The second bottom support assembly includes a second bottom vertical support column and a second bottom support tooling. The second bottom support tooling is located at the top of the second bottom vertical support column, and the second bottom support tooling is connected to the bottom of the bulbous bow side section; The second side support assemblies are correspondingly installed on the left and right sides of the bulbous bow side section. The second side support assembly includes a second side vertical support column and a second side support tooling. The second side support tooling is located at the top of the second side vertical support column, and the second side support tooling is connected to the side of the bulbous bow side section; The length direction of the second bottom connecting beam is the ship width direction, and the bottom ends of the second bottom vertical support column and the second side vertical support column are connected to the second bottom connecting beam.

5. The bulbous bow total section support device according to claim 4, characterized in that, The first bottom support assembly deviates from the centerline keel of the bulbous bow total section by 0.5 m to 1.5 m; the second bottom support assembly deviates from the centerline keel of the bulbous bow total section by 0.5 m to 1.5 m.

6. The bulbous bow subassembly support device according to claim 3, characterized in that, Bottom strengthening connectors and diagonal strengthening connectors are provided between adjacent first support frames, between adjacent second support frames, and between adjacent first support frames and second support frames; The length direction of the bottom strengthening connector is the ship length direction, and the diagonal strengthening connector has projections in the ship length direction and the ship height direction.

7. The bulbous bow subassembly support device according to claim 3, characterized in that, It further includes a heightening base; The heightening base includes a plurality of cradles. The plurality of cradles are arranged at intervals along the ship length direction, and the plurality of cradles are correspondingly arranged with the first support frame and the second support frame. Both the first support frame and the second support frame are detachably connected to the cradles.

8. A method for installing a bulbous bow section, characterized in that Applied to the bulbous bow total section support device according to any one of claims 1 to 7, the method includes: Step 1, performing overall assembly and construction on the bulbous bow total section; Step 1.1, constructing the bulbous bow total section support device; Step 1.2, transporting the deck side section and the bulbous bow side section to the bulbous bow total section support device respectively; Step 1.3, welding the bulbous bow total section support device to the bulbous bow total section; Step 2, hoisting the bulbous bow total section welded with the first support part and the second support part out of the dock; Step 3, performing mating construction on the bulbous bow total section.

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