GONDOLA type multi-beam appendage and manufacturing and mounting method thereof

Abstract

The invention discloses a GONDOLA type multi-beam appendage and a manufacturing and mounting method thereof, and the method comprises the steps: carrying out the regional division of the GONDOLA type multi-beam appendage, carrying out the staged manufacturing and construction, carrying out the machining of a base after the overall assembly of the appendage, and carrying out the positioning and mounting of the appendage on a slipway by taking the machined base as a reference plane. The installation precision requirement of the multi-beam base is reserved, a large number of parts are disassembled and manufactured into parts and then are reversely installed on the jig frame, the construction difficulty is lowered, the construction condition is improved, meanwhile, the appendage is integrally installed on a slipway, and the construction time is saved; and the conditions of long slipway construction period, large workload and poor construction condition caused by bulk installation of a large number of parts on the slipway are avoided. According to the situation that the space of an appendage is narrow, the internal structure construction is completed firstly by optimizing the installation sequence of the internal structure and arranging a bottom plate sealing plate and a hanging arm local bulk plate, and finally the internal area which cannot be constructed is completed through the sealing plate and the bulk plate with a steel liner single-face welding technology.

Description

Technical Field

[0001] The present invention belongs to the technical field of ships, and particularly relates to a GONDOLA - type multi - beam appendage and its manufacturing and installation method. Background Art

[0002] Ships with ocean scientific research and investigation functions need to install a variety of acoustic detection devices, such as deep - water multi - beam, shallow - layer profiler, deep - sea / shallow - sea underway current profiler, etc. Since the transducers of acoustic devices need to be arranged to work underwater, such ships are provided with special transducer cabins at the bottom of the ship for arranging acoustic detection devices. Among them, the deep - water multi - beam has the largest size, and the transmitting transducer and the receiving transducer must be installed perpendicular to each other. Therefore, the shape of the transducer cabin is mainly in the shape of a "pin" or a triangle. According to the installation form of the transducer cabin, it can also be divided into GONDOLA - type hoisting, fairing - type mounting, and embedded types.

[0003] The GONDOLA - type hoisting is to arrange the transducer unit in an independent appendage structure, and this appendage structure is suspended and installed at the bottom of the ship. The advantage of this installation method is that the transducer is far from the hull, which can prevent the bubbles on the hull surface from flowing under the transducer, and is conducive to the multi - beam obtaining high - quality imaging.

[0004] To ensure the installation accuracy of the multi - beam base and cooperate with the machining of the base, in the past, similar appendage structures were assembled in bulk on the shipbuilding berth as a whole. After all the structures were welded, the machining of the base was carried out. This manufacturing and installation method has a long shipbuilding berth construction period and a large workload. Moreover, the appendage structure is under the bottom of the ship, and the height of the appendage from the ground of the shipbuilding berth is low, and the working conditions of the workers are poor. A large number of overhead welds are also not conducive to the welding quality. Summary of the Invention

[0005] To solve the above - mentioned technical problems, the present invention provides a GONDOLA - type multi - beam appendage and its manufacturing and installation method, which not only retains the accuracy requirements for the machining of the multi - beam base, but also avoids the situation of a large number of parts being assembled in bulk on the shipbuilding berth for installation.

[0006] The object of the present invention is achieved through the following technical solutions. A GONDOLA - type multi - beam appendage includes:

[0007] A "pin" - shaped appendage, whose upper and lower surfaces are flat, the two sides and the front end are positive semi - circular arcs with the height as the diameter, the rear end edge is streamlined, and a transducer cabin is arranged on the upper surface of the "pin" - shaped appendage.

[0008] A hanging - arm appendage, connecting the "pin" - shaped appendage and the bottom of the ship.

[0009] Preferably, the transducer cabin arranged on the "pin"-shaped appendage includes at least a TX base arranged longitudinally and an RX base arranged transversely. Among them, the TX base is used to install the deep-water multi-beam transmitting transducer, and the RX base is used to install the deep-water multi-beam receiving transducer.

[0010] Preferably, at least three hanging-arm appendages are arranged on the upper surface of the "pin"-shaped appendage, one of which is arranged on the head side of the "pin"-shaped floating body, and the other two are symmetrically arranged on the tail side of the "pin"-shaped appendage.

[0011] Preferably, the horizontal section of the hanging-arm appendage is in a water-drop shape, and the head side is the arc end of the water-drop shape.

[0012] In addition to providing a GONDOLA type multi-beam appendage, the present invention further provides a method for manufacturing the above-mentioned GONDOLA type multi-beam appendage, which specifically includes the following steps:

[0013] Step 1: Divide the GONDOLA type multi-beam appendage into regions according to its structural characteristics, and manufacture each region component separately:

[0014] Step 1.1: Manufacture the RX base component, including the RX base wall plates around and the RX base top plate. On the assembly platform, weld and form the base frame with the RX base top plate as the base surface, install the RX transducer array base at a fixed interval inside, connect the RX base gussets and the RX base bottom plate on both sides;

[0015] Step 1.2: Manufacture the TX base component, including the TX base wall plates around and the TX base top plate. On the assembly platform, weld and form the base frame, install the TX transducer array base at a fixed interval inside, connect the TX base gussets and the TX base bottom plate on both sides;

[0016] Step 1.3: Manufacture the first top plate component of the left part of the "pin"-shaped appendage, including the first longitudinal partition, the first transverse reinforcing partition and the first top plate, and weld and form the frame component on the assembly platform;

[0017] Step 1.4: Manufacture the second top plate component of the right part of the "pin"-shaped appendage, including the second longitudinal partition, the second transverse reinforcing partition and the second top plate, and weld and form the frame component on the assembly platform;

[0018] Step 1.5: Manufacture the left hanging-arm component, including the third transverse reinforcing partition and the first arc-shaped enclosing wall plate. After the first arc-shaped enclosing wall plate is roll-formed, install the internal third transverse reinforcing partition on the assembly platform;

[0019] Step 1.6: Manufacture the right hanging-arm component, including the fourth transverse reinforcing partition and the second arc-shaped enclosing wall plate. After the second arc-shaped enclosing wall plate is roll-formed, install the internal fourth transverse reinforcing partition on the assembly platform;

[0020] Step 1.7: Fabricate the first hanging arm assembly, including the fifth transverse reinforcing partition board and the third arc-shaped enclosing wall board. After the third arc-shaped enclosing wall board is roll-formed, butt welding and installation of the internal fifth transverse reinforcing partition board are completed on the assembly platform.

[0021] Step 1.8: Fabricate the arc-shaped plate assemblies on both sides of the "pin"-shaped attachment. Divide the arc area into independent semi-circular parts through the plate seams, including the first arc-shaped plate and the second arc-shaped plate on both sides of the rear end, and the third arc-shaped plate on both sides of the front end. The blanked parts are roll-formed into arc shapes, and plug weld holes are provided on the third arc-shaped plate.

[0022] Step 1.9: Fabricate the bottom plate assembly on the lower surface of the "pin"-shaped attachment, including the left area bottom plate, the right area bottom plate, and the front end bottom plate. The bottom plates are spliced and welded together, and plug weld holes are provided.

[0023] Step 2: With the upper surface of the "pin"-shaped attachment as the base surface, assemble and install each area component of the GONDOLA型 multi-beam attachment in the reverse state on the column jig:

[0024] Step 2.1:预埋 the left hanging arm assembly, the right hanging arm assembly, and the first hanging arm assembly in the reverse state under the sectional jig according to the installation positions.

[0025] Step 2.2: Place the RX base assembly, the TX base assembly, the first top plate assembly, and the second top plate assembly on the jig with one side of the top plate positioned according to the location. Weld the top plates of each assembly to the jig columns for fixation.

[0026] Step 2.3: Perform assembly tack welding on the RX base assembly, the TX base assembly, the first top plate assembly, and the second top plate assembly. After tack welding, first weld the butt joints between the RX base top plate, the TX base top plate, the first top plate, and the second top plate among the assemblies. Secondly, weld the fillet welds of the TX base wall plate and the RX base wall plate of the TX base assembly. Then, weld the fillet welds of the first transverse reinforcing partition board and the left TX base wall plate, and the second transverse reinforcing partition board and the right TX base wall plate. Finally, weld the fillet welds of the first transverse reinforcing partition board, the second transverse reinforcing partition board, and the TX base top plate.

[0027] Step 2.4: Install the first arc-shaped plate and the second arc-shaped plate on both sides of the rear end. After the first arc-shaped plate and the second arc-shaped plate are tack-welded and positioned with the first transverse reinforcing partition board and the second transverse reinforcing partition board, first weld the butt joints between the arc-shaped plates, and then weld the fillet welds between the transverse partition boards and the arc-shaped plates.

[0028] Step 2.5: Weld the butt steel liners at the edges of the plate seams where the first arc-shaped plate, the second arc-shaped plate, the third arc-shaped plate are butted against the left area bottom plate, the right area bottom plate, and the front end bottom plate. Weld the corner steel liners at the edges of the RX base assembly and the TX base assembly.

[0029] Step 2.6: Install the left-zone bottom plate and the right-zone bottom plate; successively weld the corner joints of the bottom left-zone bottom plate, the right-zone bottom plate with the RX base assembly and the TX base assembly, weld the butt joints of the left-zone bottom plate, the right-zone bottom plate with the first arc plate and the second arc plate, and weld the corner plug welds of the left-zone bottom plate, the right-zone bottom plate with the first longitudinal partition, the second longitudinal partition, the first transverse reinforcing partition and the second transverse reinforcing partition of the first top plate assembly and the second top plate assembly;

[0030] Step 2.7: Install the front-end transverse partition of the TX base assembly, fillet weld the front-end transverse partition with the TX base wall plate, install a 60-mm-wide panel on the arc edge of the front-end transverse partition, plug weld the third arc plate with the front-end transverse partition, and plug weld the front-end bottom plate with the front-end transverse partition;

[0031] Step 2.8: Install the left hanging arm assembly and the right hanging arm assembly. Position and assemble them symmetrically on the left and right by an even number of welders. After tack welding, first weld the corner joints of the third transverse reinforcing partition, the fourth transverse reinforcing partition with the first top plate and the second top plate on the upper surface of the "pin"-shaped attachment body, and then weld the corner joints of the first arc-shaped enclosure plate, the second arc-shaped enclosure plate with the first top plate and the second top plate on the upper surface of the "pin"-shaped attachment body;

[0032] Step 2.9: Install the front hanging arm assembly. After tack welding, first weld the corner joint of the fifth transverse reinforcing partition with the first top plate on the upper surface of the "pin"-shaped attachment body, and then weld the corner joint of the third arc-shaped enclosure plate with the first top plate on the upper surface of the "pin"-shaped attachment body;

[0033] Step 2.10: After the hull is removed from the mold, place the GONDOLA type multi-beam attachment body in the inverted state on the gantry, grind the welds, grind the excess height of the bottom plate welds flat, smooth the fillet welds in the plug weld holes and apply epoxy resin to fill the remaining gaps;

[0034] Step 2.11: Transfer the GONDOLA type multi-beam attachment body to the sandblasting room, and perform sandblasting and rust removal and paint spraying on the overall surface of the attachment body;

[0035] Step 2.12: Place the GONDOLA type multi-beam attachment body in the inverted state on the sectional cribbing. After adjusting the level, perform machining on the RX base assembly 1 and the TX base assembly, and respectively perform machining on the RX transducer array base, the TX transducer array base, the RX base bottom plate and the RX base bottom plate.

[0036] Preferably, in Step 2, before the sealing plate welding of the left-zone bottom plate, the right-zone bottom plate and the front-end bottom plate, install anti-corrosion zinc blocks inside the "pin"-shaped attachment body, grind the welds at the internal welding joints and spray paint.

[0037] Preferably, in step 2.12, the machining operation includes machining grooves on the transducer array base, milling allowances on the transducer array base and the base bottom plate to meet the flatness and roughness requirements; and drilling bolt holes on the transducer array base and the base bottom plate at the required spacing.

[0038] The present invention further provides a method for installing the GONDOLA multi-beam appendage at the berth stage, which specifically comprises the following steps:

[0039] Step S1, lay a temporary track on the slipway, place the GONDOLA multi-beam appendage in a normal position on the right side of the track, and use a forklift to push the GONDOLA multi-beam appendage horizontally to the left along the track to a position below the installation position on the bottom of the ship;

[0040] Step S2, hoisting the GONDOLA type multi-beam appendage to the bottom of the ship by a hand chain hoist, arranging piers under the GONDOLA type multi-beam appendage, and spot welding the hanging arm to the bottom plate for fixing;

[0041] Step S3, installing the left hanging arm assembly and the right hanging arm assembly, positioning and assembling by an even number of welders symmetrically on the left and right, first welding the corner seams of the third transverse reinforcing bulkhead, the fourth transverse reinforcing bulkhead and the bottom plate after positioning welding, and then welding the corner seams of the first arc-shaped surrounding wall plate, the second arc-shaped surrounding wall plate and the bottom plate;

[0042] Step S4, installing the bow suspension arm assembly, first welding the fifth transverse reinforcement bulkhead and the corner seam of the bottom plate after positioning welding, and then welding the third arc-shaped surrounding wall plate and the corner seam of the bottom plate;

[0043] Step S5, installing the right side arc bulk plate of the first hanging arm assembly, using a single-sided welding and double-sided forming process, sequentially welding the first side butt joint of the third arc-shaped surrounding wall plate 72, the upper and lower corner joints, and the plug weld with the fifth transverse reinforcing partition.

[0044] Preferably, in step S1, the rail is laid directly below the GONDOLA type multi-beam appendage installation area, and the length of the rail is greater than twice the width of the appendage.

[0045] Preferably, in step S3, a circular process hole is provided on the second arc-shaped surrounding wall plate on the inner side of the right hanging arm assembly, and the process hole is sealed after the internal welding construction is completed.

[0046] Compared with the prior art, the present invention has the following advantages:

[0047] A GONDOL A - type multi - beam appendage provided by the present invention, and its manufacturing and installation methods. By dividing the area of the GONDOL A - type multi - beam appendage, through staged manufacturing and construction, after the overall assembly of the appendage is formed, the base is further machined. When installing the appendage on the shipbuilding berth, it is positioned and installed with the machined base as the reference plane. This not only preserves the installation accuracy requirements of the multi - beam base, but also decomposes a large number of parts into components and installs them in the reverse state on the jig, which reduces the construction difficulty, improves the construction conditions. At the same time, installing the whole appendage on the shipbuilding berth saves construction time and avoids the situation of long shipbuilding berth construction period, large workload and poor construction conditions caused by the bulk installation of a large number of parts on the shipbuilding berth. For the situation of narrow space inside the appendage, by optimizing the installation sequence of the internal structure, setting the bottom plate sealing plate and the hanging arm partial bulkhead plate, first complete the construction of the internal structure, and finally complete the area where internal construction cannot be carried out through the sealing plate and the bulkhead plate with the single - side welding process using steel backing.

[0048] In the present invention, both the RX base and the TX base are fabricated in segments and then installed on the "pin - shaped" appendage structure. Compared with directly grooving and fabricating the base on the "pin - shaped" appendage, the method of the present invention has more accurate precision control and more flexible operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 Schematic diagram of the GONDOL A - type multi - beam appendage structure in an embodiment of the present invention;

[0050] Figure 2 Schematic diagram of the "pin - shaped" appendage structure in an embodiment of the present invention;

[0051] Figure 3 Top view of the GONDOL A - type multi - beam appendage in an embodiment of the present invention;

[0052] Figure 4 Bottom view of the GONDOL A - type multi - beam appendage in an embodiment of the present invention;

[0053] Figure 5 Schematic diagram of the RX base assembly structure in an embodiment of the present invention;

[0054] Figure 6 Schematic diagram of the TX base assembly structure in an embodiment of the present invention;

[0055] Figure 7 Front view of the connection between the GONDOL A - type multi - beam appendage and the hull bottom plate in an embodiment of the present invention;

[0056] Figure 8 Side view of the connection between the GONDOL A - type multi - beam appendage and the hull bottom plate in an embodiment of the present invention.

[0057] In the figure, 1 is the RX base assembly; 2 is the TX base assembly; 3 is the first top plate assembly; 4 is the second top plate assembly; 5 is the left hanging arm assembly; 6 is the right hanging arm assembly; 7 is the head hanging arm assembly; 8 is the arc plate assembly; 9 is the bottom plate assembly; 11 is the RX base wall plate; 12 is the RX base top plate; 13 is the RX transducer array base; 14 is the RX base gusset plate; 15 is the RX base bottom plate; 21 is the TX base wall plate; 22 is the TX base top plate; 23 is the TX transducer array base; 24 is the TX base gusset plate; 25 is the TX base bottom plate; 31 is the first longitudinal partition; 32 is the first transverse reinforcement partition; 33 is the first top plate; 41 is the second longitudinal partition; 42 is the second transverse reinforcement partition; 43 is the second top plate; 51 is the third transverse reinforcement partition; 52 is the first arc-shaped enclosing wall plate; 61 is the fourth transverse reinforcement partition; 62 is the second arc-shaped enclosing wall plate; 71 is the fifth transverse reinforcement partition; 72 is the third arc-shaped enclosing wall plate; 73 is the right arc-shaped bulkhead plate; 81 is the first arc plate; 82 is the second arc plate; 83 is the third arc plate; 91 is the left area bottom plate; 92 is the right area bottom plate; 93 is the front end bottom plate; 94 is the head end transverse partition; 99 is the ship bottom plate. Detailed implementation mode

[0058] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that, for the sake of description, only parts related to the present invention rather than all structures are shown in the drawings.

[0059] The technical solution of the present invention provides a GONDOLA型 multi-beam appendage, including:

[0060] A "pin"-shaped appendage, whose upper and lower surfaces are flat, both sides and the front end are positive semi-circular arcs with the height as the diameter, and the rear end edge is streamlined. A transducer cabin is arranged on the upper surface of the "pin"-shaped appendage;

[0061] A hanging arm appendage, connecting the "pin"-shaped appendage and the ship bottom.

[0062] In an embodiment of the present invention, the transducer cabin arranged on the "pin"-shaped appendage at least includes a longitudinally arranged TX base and a transversely arranged RX base. Among them, the TX base is used to install a deep-water multi-beam transmitting transducer, and the RX base is used to install a deep-water multi-beam receiving transducer. In this embodiment, the GONDOLA型 multi-beam appendage is integrally installed at the bottom of the middle front area of the ship, about 1.1 m below the ship bottom, and the appendage is parallel to the hull. The height of the "pin"-shaped appendage is about 0.4 m, the upper and lower surfaces are flat, both sides and the front end are positive semi-circular arcs with the height as the diameter, and the rear end edge is streamlined.

[0063] Such as Figures 1 to 4As shown in the figure, in an embodiment of the present invention, at least three hanging arm attachments are arranged on the upper surface of the "pin" - shaped attachment body. One is arranged on the head side of the "pin" - shaped floating body, and the other two are symmetrically arranged on the tail side of the "pin" - shaped attachment body. In this embodiment, at least 3 hanging arm attachments are arranged above the "pin" - shaped attachment body, one on the head side and two symmetrically on the tail side. The horizontal cross - section of the hanging arm is in the shape of a water droplet, and the head side is the arc end of the water droplet. The lower side of the hanging arm attachment is connected to the upper surface of the "pin" - shaped attachment body, and the upper side of the hanging arm attachment is connected to the bottom of the hull.

[0064] In addition to providing a GONDOLA型 multi - beam attachment, the present invention further provides a method for manufacturing the above - mentioned GONDOLA型 multi - beam attachment, which specifically includes the following steps:

[0065] Step 1: Divide the GONDOLA型 multi - beam attachment into regions according to its structural characteristics, and manufacture each region component separately:

[0066] Step 1.1: As Figure 5 shown, for the 1 - 1 cross - sectional view in the direction of Figure 3 , the RX base component 1 is made of steel plate blanking parts, including the surrounding RX base wall plates 11 and the RX base top plate 12. The base frame is assembled by welding on the assembly platform with the RX base top plate 12 as the base surface. The RX transducer array base 13 is installed at a fixed interval inside, and the RX base gussets 14 and the RX base bottom plate 15 are connected on both sides;

[0067] Step 1.2: As Figure 6 shown, for the 2 - 2 cross - sectional view in the direction of Figure 3 , the TX base component 2 is made of steel plate blanking parts, including the surrounding TX base wall plates 21 and the TX base top plate 22. The base frame is assembled by welding on the assembly platform, and the TX transducer array base 23 is installed at a fixed interval inside, and the TX base gussets 24 and the TX base bottom plate 25 are connected on both sides;

[0068] Step 1.3: Manufacture the first top plate component 3 of the left part of the "pin" - shaped attachment body, which is made of steel plate blanking parts, including the first longitudinal partition 31, the first transverse reinforcement partition 32 and the first top plate 33, and assemble the frame component by welding on the assembly platform;

[0069] Step 1.4: Manufacture the second top plate component 4 of the right part of the "pin" - shaped attachment body, which is made of steel plate blanking parts, including the second longitudinal partition 41, the second transverse reinforcement partition 42 and the second top plate 43, and assemble the frame component by welding on the assembly platform;

[0070] Step 1.5: Fabricate the left hanging arm assembly 5 from steel plate blanking parts, including a third transverse reinforcement partition 51 and a first arc-shaped enclosure plate 52. After the first arc-shaped enclosure plate 52 is roll-formed, install the internal third transverse reinforcement partition 51 on the assembly platform.

[0071] Step 1.6: Fabricate the right hanging arm assembly 6 from steel plate blanking parts, including a fourth transverse reinforcement partition 61 and a second arc-shaped enclosure plate 62. After the second arc-shaped enclosure plate 62 is roll-formed, install the internal fourth transverse reinforcement partition 61 on the assembly platform.

[0072] Step 1.7: Fabricate the front hanging arm assembly 7 from steel plate blanking parts, including a fifth transverse reinforcement partition 71 and a third arc-shaped enclosure plate 72. After the third arc-shaped enclosure plate 72 is roll-formed, complete the butt welding and install the internal fifth transverse reinforcement partition 71 on the assembly platform.

[0073] Step 1.8: Fabricate the arc-shaped plate assemblies 8 on both sides of the "pin" - shaped attachment. Cut the steel plate into parts, divide the arc area into independent semi-circular parts through plate seams, including the first arc-shaped plates 81 and the second arc-shaped plates 82 at both rear ends, and the third arc-shaped plates 83 at both front ends. The blanking parts are roll-formed into arc shapes, and plug welding holes are provided on the third arc-shaped plates 83.

[0074] Step 1.9: Fabricate the bottom plate assembly 9 on the lower surface of the "pin" - shaped attachment, including a left area bottom plate 91, a right area bottom plate 92, and a front bottom plate 93, all made from steel plate blanking parts. The bottom plates are spliced and welded together, and plug welding holes are provided.

[0075] In this embodiment, the GONDOLA - type multi - beam attachment is fabricated in separate parts. By splitting the overall attachment into different components according to the structural form, most of the attachment structures can be constructed on the in - field assembly platform, reducing the workload of installing parts during the sectional and berth stages. At the same time, a large number of vertical and overhead welds are turned into flat - welding stations, reducing the construction difficulty and improving the assembly accuracy, meeting the technical requirements.

[0076] Step 2: Taking the upper surface of the "pin" - shaped attachment as the base surface, assemble and install the components of each area of the GONDOLA - type multi - beam attachment in an inverted state on the column jig:

[0077] Step 2.1:预埋 the left hanging arm assembly 5, the right hanging arm assembly 6, and the front hanging arm assembly 7 in an inverted state under the sectional jig according to the installation positions.

[0078] Step 2.2: Place the RX base assembly 1, the TX base assembly 2, the first top plate assembly 3, and the second top plate assembly 4 on the jig with one side of the top plate positioned, and weld the top plates of each component to the jig columns for fixation.

[0079] Note: In the translation of "步骤2.1:将左挂臂组件5、右挂臂组件6和首挂臂组件7根据安装位置以反态预埋放置于分段胎架下;", there may be an error in the original Chinese text as "预埋" might not be the most accurate term here. A more appropriate word could be "pre - embed" or "embed in advance", but following the instruction to only translate as is, it is translated as "预埋". If this is a technical term with a specific meaning in the relevant field, it may need to be adjusted according to the actual situation.Step 2.3: Carry out positioning welding on the RX base assembly 1, TX base assembly 2, first top plate assembly 3, and second top plate assembly 4. After positioning welding, first weld the butt joints between the RX base top plate 12, TX base top plate 22, first top plate 33, and second top plate 43 among the components. Secondly, weld the fillet weld between the TX base wall plate 21 of the TX base assembly 2 and the RX base wall plate 11. Then, weld the fillet weld between the first transverse stiffening partition 32 and the left TX base wall plate 21, and the fillet weld between the second transverse stiffening partition 42 and the right TX base wall plate 21. Finally, weld the flat fillet weld between the first transverse stiffening partition 32, the second transverse stiffening partition 42, and the TX base top plate 22;

[0080] Step 2.4: Install the first arc plates 81 and second arc plates 82 on both sides at the rear end. After spot welding and positioning the first arc plates 81 and second arc plates 82 with the first transverse stiffening partition 32 and the second transverse stiffening partition 42, first weld the butt joints between the arc plates, and then weld the fillet weld between the transverse partition and the arc plates;

[0081] Step 2.5: Weld the butt steel backing pads at the edges of the plate joints where the first arc plates 81, second arc plates 82, third arc plates 83 are对接 with the left area bottom plate 91, right area bottom plate 92, and front end bottom plate 93. Weld the fillet steel backing pads at the edges of the RX base assembly 1 and TX base assembly 2;

[0082] Step 2.6: Install the left area bottom plate 91 and right area bottom plate 92; successively weld the fillet joints between the left area bottom plate 91, right area bottom plate 92 and the RX base assembly 1 and TX base assembly 2, weld the butt joints between the left area bottom plate 91, right area bottom plate 92 and the first arc plates 81, second arc plates 82, and weld the plug fillet welds between the left area bottom plate 91, right area bottom plate 92 and the first longitudinal partitions 31, second longitudinal partitions 41, first transverse stiffening partitions 32, and second transverse stiffening partitions 42 of the first top plate assembly 3 and second top plate assembly 4;

[0083] Step 2.7: Install the front end transverse partition 94 of the TX base assembly 2. Weld the fillet joint between the front end transverse partition 94 and the TX base wall plate 21. Install a 60 - mm - wide panel at the arc edge of the front end transverse partition 94. Weld the plug fillet weld between the third arc plate 83 and the front end transverse partition 94, and weld the plug fillet weld between the front end bottom plate 93 and the front end transverse partition 94;

[0084] Step 2.8: Install the left hanging arm assembly 5 and right hanging arm assembly 6. Position and assemble with an even number of symmetrically arranged welders on the left and right. After positioning welding, first weld the fillet joints between the third transverse stiffening partitions 51, fourth transverse stiffening partitions 61 and the first top plate 33, second top plate 43 on the upper surface of the "pin" - shaped attachment, and then weld the fillet joints between the first arc - shaped enclosing wall plates 52, second arc - shaped enclosing wall plates 62 and the first top plate 33, second top plate 43 on the upper surface of the "pin" - shaped attachment;

[0085] Step 2.9: Install the first hanging arm assembly 7. After positioning and welding, first weld the corner joint between the fifth transverse reinforcing partition plate 71 and the first top plate 33 on the upper surface of the "pin"-shaped attachment body, and then weld the corner joint between the third arc-shaped enclosing wall plate 72 and the first top plate 33 on the upper surface of the "pin"-shaped attachment body;

[0086] Step 2.10: After the body is removed from the mold, place the GONDOLA A multi-beam attachment body in an inverted state on the gantry, grind the weld seams, grind the excess height of the bottom plate weld seams flat, smooth the fillet welds in the plug weld holes and apply epoxy resin to fill the remaining gaps;

[0087] Step 2.11: Transfer the GONDOLA A multi-beam attachment body to the sandblasting room, and perform sandblasting, rust removal and painting on the entire surface of the attachment body;

[0088] Step 2.12: Place the GONDOLA A multi-beam attachment body in an inverted state on the sectional pier timbers. After adjusting the level, perform machining on the RX base assembly 1 and the TX base assembly 2, and perform machining on the RX transducer array base 13, the TX transducer array base 23, the RX base bottom plate 15 and the RX base bottom plate 25 respectively.

[0089] In an embodiment of the present invention, in steps 1.1 and 1.2, when the RX base assembly 1 and the TX base assembly 2 are welded together, the RX base top plate 12 and the TX base top plate 22 need to be rigidly welded to the channel steel frame tooling parts. Reinforcing angle steel supports are arranged at a fixed spacing between the two sides of the RX base wall plates 11 and the two sides of the TX base wall plates 21. When welding the base and the gusset plates, start from the middle to both sides and weld simultaneously by an even number of welders to avoid deformation exceeding the tolerance due to shrinkage during the base welding. The installation surfaces of the RX transducer array base 13 and the TX transducer array base 25 have a 5 mm machining allowance, which is used for machining after the overall forming of the GONDOLA A multi-beam attachment body to meet the requirements of the base flatness and roughness.

[0090] In an embodiment of the present invention, in steps 1.3 and 1.4, for the first longitudinal partition plate 31, the first transverse reinforcing partition plate 32, the second longitudinal partition plate 41, and the second transverse reinforcing partition plate 42, 60 mm wide panels are installed on one side edge of the left area bottom plate 91 and the right area bottom plate 92 as plug weld steel backing pads during the sectional installation stage when the left area bottom plate 91 and the right area bottom plate 92 are installed and welded.

[0091] In an embodiment of the present invention, in steps 1.5 to 1.7, the hanging arm water droplet-shaped arc plate is processed in three parts, including the head arc plate and the two side arc plates. The processed arc is inspected by a wooden template. Using one side arc-shaped enclosing wall plate as the installation surface, install the transverse partition plate through an angle template.

[0092] In step 1.7, plug weld holes are provided at the transverse diaphragm 71 on the right arc-shaped bulkhead plate 73 of the first hanging arm assembly 7. A 40-mm-wide panel is installed at the right edge of the fifth transverse stiffening diaphragm 71 as a plug weld steel backing during the installation and welding of the right arc-shaped bulkhead plate 73 at the shipbuilding berth stage. The right arc-shaped bulkhead plate 73 is only spot-welded and assembled at this stage. 40-mm-wide flat bars are installed on the upper, lower, and front edges of the right arc-shaped bulkhead plate 73 of the hanging arm as fillet weld steel backing and butt weld steel backing during the installation and welding of the right arc-shaped bulkhead plate 73 at the shipbuilding berth stage.

[0093] In one embodiment of the present invention, in step 2, before the cover plate is welded, anti-corrosion zinc blocks are installed inside the "pin"-shaped appendage on the left area bottom plate 91, the right area bottom plate 92, and the front end bottom plate 93, and the weld seams at the internal welds are ground and painted.

[0094] In one embodiment of the present invention, in step 2.1, the sectional jig is composed of columns with a spacing of 1000 mm * 1000 mm and flat steel tie bars with strengthened edges. The height of the columns is the height of the "pin"-shaped appendage plus the height of the short side of the hanging arm plus 600 mm.

[0095] In one embodiment of the present invention, in step 2.3, welding is carried out symmetrically from the middle to the left and right, and front and back by an even number of welders to ensure uniform shrinkage of the structural members and control deformation.

[0096] In one embodiment of the present invention, in step 2.9, the fillet weld at the corner joint between the right arc-shaped bulkhead plate 73 and the upper surface of the "pin"-shaped appendage is not welded at this stage.

[0097] In one embodiment of the present invention, in step 2.10, placing the GONDOLA A-type multi-beam appendage on the gantry also includes releasing the rigid constraints of the jig and eliminating the welding stress generated during the welding process.

[0098] In one embodiment of the present invention, in step 2.12, machining includes laying a magnetic adsorption track and installing a portable surface milling machine. Machining includes machining a 440 * 5 groove on the transducer array base, milling the machining allowance between the transducer array base and the base bottom plate to meet the requirements of flatness of 2.0 mm and roughness of 12.5 μm; drilling bolt holes at the required spacing between the transducer array base and the base bottom plate.

[0099] As Figures 7 and 8 shown (the 3-3 cross-sectional view and the 4-4 cross-sectional view respectively Figure 3 ), the present invention further provides a method for installing the GONDOLA A-type multi-beam appendage at the shipbuilding berth stage. After turning over the formed GONDOLA A-type multi-beam appendage, it is moved into the ship bottom for installation in the normal state, which specifically includes the following steps:

[0100] Step S1, lay a temporary track on the slipway, place the GONDOLA multi-beam appendage in a normal position on the right side of the track, and use a forklift to push the GONDOLA multi-beam appendage horizontally to the left along the track to a position below the installation position on the bottom of the ship;

[0101] Step S2, hoisting the GONDOLA type multi-beam appendage to the bottom of the ship by a hand chain hoist, arranging piers under the GONDOLA type multi-beam appendage, and spot welding the hanging arm to the bottom plate for fixing;

[0102] Step S3, installing the left hanging arm assembly 5 and the right hanging arm assembly 6, positioning and assembling by an even number of welders symmetrically on the left and right, first welding the corner seams of the third transverse reinforcing bulkhead 51, the fourth transverse reinforcing bulkhead 61 and the bottom plate 99 after positioning welding, and then welding the corner seams of the first arc-shaped surrounding wall plate 52, the second arc-shaped surrounding wall plate 62 and the bottom plate 99;

[0103] Step S4, installing the bow suspension arm assembly 7, first welding the corner seam between the fifth transverse reinforcement bulkhead 71 and the bottom plate 99 after positioning welding, and then welding the corner seam between the third arc-shaped surrounding wall plate 72 and the bottom plate 99;

[0104] Step S5, installing the arc-shaped bulk plate 73 on the right side of the first hanging arm assembly 7, using a single-sided welding and double-sided forming process, and sequentially welding the first side butt joint of the third arc-shaped surrounding wall plate 72, the upper and lower corner joints, and the plug weld with the fifth transverse reinforcing partition plate 71.

[0105] In one embodiment of the present invention, in step S1, a track is laid directly below the GONDOLA type multi-beam appendage installation area, and the length of the track is greater than twice the width of the appendage.

[0106] In one embodiment of the present invention, in step S1, four roller devices are provided on the left area bottom plate 91 and the right area bottom plate 92 of the GONDOLA type multi-beam appendage, so as to enable the appendage to slide laterally on the rail and to clamp the rail.

[0107] In one embodiment of the present invention, in step S2, the mounting surface of the TX and RX base transducers is used as the base surface, and the level of the GONDOLA type multi-beam appendage is adjusted by trimming the margin at the upper end of the hanging arm.

[0108] In one embodiment of the present invention, in step S2, the first top plate assembly 3 and the second top plate assembly 4 of the GONDOLA type multi-beam appendage are provided with four hoisting hoists for hand chain hoist shackle hanging points.

[0109] In one embodiment of the present invention, in step S3, a circular process hole with a diameter of 400 mm is set on the inner arc-shaped surrounding wall plate of the right hanging arm assembly 6, and the process hole is resealed after the internal welding construction is completed.

[0110] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A GONDOLA type multi-beam appendage, characterized in that: The multi-beam appendage includes: A "pin"-shaped appendage with flat upper and lower surfaces, semi-circular arcs with the height as the diameter on both sides and the front end, and a streamlined rear edge. A transducer cabin is provided on the upper surface of the "pin"-shaped appendage. A hanging arm appendage connecting the "pin"-shaped appendage and the ship bottom.

2. A GONDOLA type multi-beam appendage as claimed in claim 1, characterized in that: The transducer cabin provided on the "pin"-shaped appendage at least includes a longitudinally arranged TX base and a transversely arranged RX base. Among them, the TX base is used to install a deep-water multi-beam transmitting transducer, and the RX base is used to install a deep-water multi-beam receiving transducer.

3. A GONDOLA type multi-beam appendage as claimed in claim 1, characterized in that: At least three hanging arm appendages are arranged on the upper surface of the "pin"-shaped appendage, one of which is arranged on the head side of the "pin"-shaped floating body, and the other two are symmetrically arranged on the tail side of the "pin"-shaped appendage.

4. A GONDOLA type multi-beam appendage as claimed in claim 1, characterized in that: The horizontal section of the hanging arm appendage is in a water droplet shape, and the head side is a water droplet-shaped arc end.

5. A method for manufacturing a GONDOLA type multi-beam appendage, characterized in that: The method is used to manufacture the GONDOLA type multi-beam appendage according to any one of claims 1-4. The method specifically includes the following steps: Step 1: Divide the GONDOLA type multi-beam appendage into regions according to its structural characteristics, and separately manufacture the components of each region: Step 1.1: Manufacture the RX base component (1), including the surrounding RX base wall plates (11) and the RX base top plate (12). On the assembly platform, weld and form a base frame with the RX base top plate (12) as the base surface, and install RX transducer array bases (13) at fixed intervals inside, connect RX base gussets (14) and RX base bottom plates (15) on both sides; Step 1.2: Manufacture the TX base component (2), including the surrounding TX base wall plates (21) and the TX base top plate (22). On the assembly platform, weld and form a base frame, and install TX transducer array bases (23) at fixed intervals inside, connect TX base gussets (24) and TX base bottom plates (25) on both sides; Step 1.3: Manufacture the first top plate component (3) of the left part of the "pin"-shaped appendage, including the first longitudinal partition (31), the first transverse reinforcing partition (32) and the first top plate (33). On the assembly platform, weld and form a frame component; Step 1.4: Manufacture the second top plate component (4) of the right part of the "pin"-shaped appendage, including the second longitudinal partition (41), the second transverse reinforcing partition (42) and the second top plate (43). On the assembly platform, weld and form a frame component; Step 1.5: Manufacture the left hanging arm component (5), including the third transverse reinforcing partition (51) and the first arc-shaped enclosing wall plate (52). After the first arc-shaped enclosing wall plate (52) is roll-formed, install the internal third transverse reinforcing partition (51) on the assembly platform; Step 1.6: Manufacture the right hanging arm component (6), including the fourth transverse reinforcing partition (61) and the second arc-shaped enclosing wall plate (62). After the second arc-shaped enclosing wall plate (62) is roll-formed, install the internal fourth transverse reinforcing partition (61) on the assembly platform; Step 1.7: Fabricate the first hanging arm assembly (7), including the fifth transverse stiffening partition plate (71) and the third arc-shaped enclosing wall plate (72). After the third arc-shaped enclosing wall plate (72) is roll-formed, butt welding is completed on the assembly platform and the fifth transverse stiffening partition plate (71) inside is installed. Step 1.8: Fabricate the arc plate assemblies (8) on both sides of the "pin" - shaped attachment. Divide the arc area into independent semi-circular parts through plate seams, including the first arc plate (81) and the second arc plate (82) on both sides at the rear end, and the third arc plate (83) on both sides at the front end. The blanked parts are roll-formed into arc shapes, and plug weld holes are provided on the third arc plate (83). Step 1.9: Fabricate the bottom plate assembly (9) on the lower surface of the "pin" - shaped attachment, including the left area bottom plate (91), the right area bottom plate (92), and the front end bottom plate (93). The bottom plates are spliced and welded together, and plug weld holes are provided. Step 2: Taking the upper surface of the "pin" - shaped attachment as the base surface, assemble and install each area component of the GONDOLA型 multi-beam attachment in the reverse state on the column jig: Step 2.1: Pre-bury and place the left hanging arm assembly (5), the right hanging arm assembly (6), and the first hanging arm assembly (7) in the reverse state under the sectional jig according to the installation positions. Step 2.2: Place the RX base assembly (1), the TX base assembly (2), the first top plate assembly (3), and the second top plate assembly (4) on the jig with one side of the top plate positioned. Weld the top plates of each component to the jig columns for fixation. Step 2.3: Perform assembly tack welding on the RX base assembly (1), the TX base assembly (2), the first top plate assembly (3), and the second top plate assembly (4). After tack welding, first weld the butt joints between the RX base top plate (12), the TX base top plate (22), the first top plate (33), and the second top plate (43) among the components. Secondly, weld the fillet weld at the vertical angle between the TX base wall plate (21) of the TX base assembly (2) and the RX base wall plate (11). Then, weld the fillet weld at the vertical angle between the first transverse stiffening partition plate (32) and the left - hand side TX base wall plate (21), and between the second transverse stiffening partition plate (42) and the right - hand side TX base wall plate (21). Finally, weld the fillet weld at the flat angle between the first transverse stiffening partition plate (32), the second transverse stiffening partition plate (42), and the TX base top plate (22). Step 2.4: Install the first arc plate (81) and the second arc plate (82) on both sides at the rear end. After the first arc plate (81) and the second arc plate (82) are spot - welded and positioned with the first transverse stiffening partition plate (32) and the second transverse stiffening partition plate (42), first weld the butt joints between the arc plates, and then weld the fillet weld between the transverse partition plates and the arc plates. Step 2.5: Weld butt steel liners at the edges of the plate seams where the first arc plate (81), the second arc plate (82), the third arc plate (83) are butt - jointed with the left area bottom plate (91), the right area bottom plate (92), and the front end bottom plate (93). Weld corner steel liners at the edges of the RX base assembly (1) and the TX base assembly (2). Step 2.6: Install the left-zone bottom plate (91) and the right-zone bottom plate (92); successively weld the corner joints of the left-zone bottom plate (91) and the right-zone bottom plate (92) with the RX base assembly (1) and the TX base assembly (2), weld the butt joints of the left-zone bottom plate (91) and the right-zone bottom plate (92) with the first arc plate (81) and the second arc plate (82), and weld the plug welds at the corners of the left-zone bottom plate (91) and the right-zone bottom plate (92) with the first longitudinal partition (31), the second longitudinal partition (41), the first transverse reinforcing partition (32), and the second transverse reinforcing partition (42) of the first top plate assembly 3 and the second top plate assembly 4; Step 2.7: Install the front-end transverse partition (94) of the TX base assembly (2). The front-end transverse partition (94) is fillet welded to the TX base wall plate (21). A 60-mm-wide panel is installed at the arc edge of the front-end transverse partition (94). The third arc plate (83) is plug welded to the front-end transverse partition (94), and the front-end bottom plate (93) is plug welded to the front-end transverse partition (94); Step 2.8: Install the left hanging arm assembly (5) and the right hanging arm assembly (6). Position and assemble them with an even number of welders symmetrically on the left and right. After tack welding, first weld the corner joints of the third transverse reinforcing partition (51) and the fourth transverse reinforcing partition (61) with the first top plate (33) and the second top plate (43) on the upper surface of the "pin"-shaped attachment, and then weld the corner joints of the first arc-shaped enclosure plate (52) and the second arc-shaped enclosure plate (62) with the first top plate (33) and the second top plate (43) on the upper surface of the "pin"-shaped attachment; Step 2.9: Install the front hanging arm assembly (7). After tack welding, first weld the corner joint of the fifth transverse reinforcing partition (71) with the first top plate (33) on the upper surface of the "pin"-shaped attachment, and then weld the corner joint of the third arc-shaped enclosure plate (72) with the first top plate (33) on the upper surface of the "pin"-shaped attachment; Step 2.10: After the hull is removed from the mold, place the GONDOLA A type multi-beam attachment in an inverted state on the gantry. Grind the welds, grind the excess height of the bottom plate welds flat, smooth the fillet welds in the plug weld holes, and apply epoxy resin to fill the remaining gaps; Step 2.11: Transfer the GONDOLA A type multi-beam attachment to the sandblasting room, and perform sandblasting, rust removal, and painting on the entire surface of the attachment; Step 2.12: Place the GONDOLA A type multi-beam attachment in an inverted state on the sectional dunnage. After adjusting the level, perform machining on the RX base assembly (1) and the TX base assembly (2), and perform machining on the RX transducer array base (13), the TX transducer array base (23), the RX base bottom plate (15), and the TX base bottom plate (25) respectively.

6. The method for manufacturing a GONDOLA type multi-beam appendage according to claim 5, characterized in that: In Step 2, before the cover plate welding of the left-zone bottom plate (91), the right-zone bottom plate (92), and the front-end bottom plate (93), install anti-corrosion zinc blocks inside the "pin"-shaped attachment, grind the welds at the internal welding joints, and spray paint.

7. The method for manufacturing a GONDOLA type multi-beam appendage according to claim 5, characterized in that: In step 2.12, the machining operation includes machining grooves on the transducer array base, milling allowances on the transducer array base and the base bottom plate to meet the flatness and roughness requirements; and drilling bolt holes on the transducer array base and the base bottom plate at the required spacing.

8. A method for installing a GONDOLA type multi-beam appendage at the berth stage, characterized in that: The method is used to connect the GONDOLA type multi-beam appendage manufactured by any one of claims 5 to 7 to a hull, and the method specifically comprises the following steps: Step S1, laying a temporary track on the slipway, placing the GONDOLA multi-beam appendage in a normal position on the right side of the track, and pushing the GONDOLA multi-beam appendage laterally to the left along the track by a forklift to a position below the installation position on the bottom of the ship; Step S2, hoisting the GONDOLA type multi-beam appendage to the bottom of the ship by a hand chain hoist, arranging piers under the GONDOLA type multi-beam appendage, and spot welding the hanging arm to the bottom plate for fixing; Step S3, installing the left hanging arm assembly (5) and the right hanging arm assembly (6), positioning and assembling them by an even number of welders symmetrically on the left and right, and after positioning welding, first welding the corner seams between the third transverse reinforcing bulkhead (51), the fourth transverse reinforcing bulkhead (61) and the bottom plate (99), and then welding the corner seams between the first arc-shaped surrounding wall plate (52), the second arc-shaped surrounding wall plate (62) and the bottom plate (99); Step S4, installing the bow suspension arm assembly (7), and after positioning welding, first welding the corner joint between the fifth transverse reinforcement bulkhead (71) and the bottom plate (99), and then welding the corner joint between the third arc-shaped surrounding wall plate (72) and the bottom plate (99); Step S5, installing the right side arc-shaped bulk plate (73) of the first hanging arm assembly (7), using a single-sided welding and double-sided forming process, and sequentially welding the first side butt joint, upper and lower corner joints of the third arc-shaped surrounding wall plate (72) and the plug weld with the fifth transverse reinforcing partition plate (71).

9. A method for installing a GONDOLA type multi-beam appendage at a berth stage as claimed in claim 8, characterized in that: In the step S1, a rail is laid directly below the GONDOLA type multi-beam appendage installation area, and the length of the rail is greater than twice the width of the appendage.

10. The method for installing a GONDOLA type multi-beam appendage at a berth stage according to claim 8, characterized in that: In the step S3, a circular process hole is provided on the second arc-shaped surrounding wall plate (62) inside the right hanging arm assembly (6), and the process hole is sealed after the internal welding construction is completed.

Images