Ship sonar assembly structure and sonar assembly method

Abstract

The invention relates to the technical field of hull structures, and discloses a ship sonar assembly structure and a sonar assembly method.The ship sonar assembly structure comprises a hull, a protection cover, a transition plate and sonar equipment, the protection cover comprises a shell and an assembly plate, the shell is provided with an assembly cavity, and the sonar equipment is arranged in the assembly cavity and fixedly connected with the assembly plate; the shell is provided with a front end and a rear end, the front end of the shell faces the bow of the ship body, the transition plate is connected between the front end of the shell and the ship body and is of a circumferential closed structure, and the inner diameter of the transition plate is gradually increased in the direction from the shell to the ship body. The front end of the shell is connected with the ship body through the transition plate, and the front end of the sonar equipment can extend out of the protection cover to be immersed in water and does not exceed the transition plate, so that the sonar equipment does not exceed the ship body, and the sonar equipment is effectively protected; and the internal profile of the transition plate is matched with the sound wave propagation profile of the sonar equipment, so that the detection angle requirement of the sonar equipment is met, and the detection range of the sonar equipment is effectively ensured.

Description

Technical Field

[0001] The invention relates to the technical field of hull structures, and in particular to a ship sonar assembly structure and a sonar assembly method. Background Art

[0002] When ships are sailing, there are many potential threatening obstacles, such as shoals, reefs, islands, floating containers, etc. In order to improve navigation safety, large ships choose to install collision avoidance sonars to process real-time information and navigate in time. Collision avoidance sonars are generally installed in the underwater part of the bow and located on the mid-longitudinal line. The sonar head extends out of the ship, intrudes into the water, and faces directly in front of the ship.

[0003] When a ship is sailing, a large amount of water will flow through the sonar at the bow of the ship. Under certain working conditions, the water flow will damage the sonar and affect the service life of the sonar. In order to protect the sonar equipment and provide a good detection environment, it is necessary to make a sonar protection device to make the sonar work safely and effectively. Existing ships will install a deflector to change the flow direction of the water at the bow of the ship. However, while changing the water flow, the deflector also affects the sound wave transmission range of the sonar, affecting the operation of the sonar. Summary of the invention

[0004] The purpose of the present invention is to provide a ship sonar assembly structure to solve the problem in the prior art that the fairing affects the sound wave transmission range of the sonar; the present invention also provides a sonar assembly method.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a ship sonar assembly structure, including a hull, a protective cover, a transition plate and a sonar device, the protective cover including an outer shell and an assembly plate fixedly connected to the outer shell, the outer shell having an assembly cavity, the assembly plate being arranged in the assembly cavity and being welded and fixed to the outer shell, the sonar device being arranged in the assembly cavity and being fixedly connected to the assembly plate, the outer shell having a front end and a rear end, the front end of the outer shell facing the bow of the hull, the transition plate being connected between the front end of the outer shell and the hull, the transition plate being a circumferentially closed structure, and the inner diameter of the transition plate gradually increasing along the direction from the outer shell to the hull.

[0006] Preferably, the outer shell includes a front shell, a rear shell and an end plate, the front shell is welded and fixed to the rear shell, the assembly plate is welded and fixed to the front shell, the front end of the front shell is smoothly connected to the transition plate, and the end plate is welded and fixed to the rear end of the rear shell.

[0007] Preferably, the front shell includes a first shell plate and a second shell plate, and the rear shell includes a third shell plate and a fourth shell plate, the first shell plate, the second shell plate, the third shell plate and the fourth shell plate are all U-shaped structures, the first shell plate and the second shell plate are arranged opposite to each other and are welded and fixed, and the third shell plate and the fourth shell plate are arranged opposite to each other and are welded and fixed.

[0008] Preferably, the assembly plate includes a first plate body and a second plate body, the first plate body and the second plate body are arranged opposite to each other in a front-rear direction perpendicular to the hull, and the first plate body and the second plate body are each provided with at least two assembly holes, and the assembly holes are used to pass bolts, and the sonar equipment is connected to the first plate body and the second plate body by bolts.

[0009] Preferably, the sonar equipment includes a detection head, a transducer and a watertight cable, the detection head is located at the front end of the transducer, the watertight cable is electrically connected to the transducer, a connecting plate is provided at the connecting position between the detection head and the transducer, a plurality of bolt holes are provided on the connecting plate, and the connecting plate and the first plate body, as well as the connecting plate and the second plate body are bolted together.

[0010] Preferably, the transition plate is trumpet-shaped, and there is a smooth transition between the transition plate and the hull, and between the transition plate and the outer shell.

[0011] The present invention also provides a sonar assembly method, which is used for the ship sonar assembly structure described in any of the above technical solutions, and comprises the following steps:

[0012] S1, using a positioning tool to position and manufacture the front shell and the rear shell respectively, welding and fixing the rear shell to the end plate, and then using a positioning tool to weld and fix the assembly plate to the front shell, assembling the protective cover, and welding and fixing the outer shell of the protective cover to the hull;

[0013] S2, welding and fixing the front end of the outer shell of the protective cover to the transition plate, and then welding and fixing the transition plate to the hull;

[0014] S3, placing the sonar device into the assembly cavity of the housing, and fixing the sonar device to the assembly plate with bolts.

[0015] Preferably, in step S1, the positioning tool comprises a positioning plate, a partition plate and a baffle plate, the partition plate and the baffle plate are located on the same side of the positioning plate, the positioning plate, the partition plate and the baffle plate are vertically welded and fixed in pairs, the positioning plate is provided with a positioning hole, the positioning hole corresponds to the assembly hole of the assembly plate along the front-to-back direction, and the outer contour of the positioning plate corresponds to the inner contour of the front shell;

[0016] In step S1, when making the front shell, the inner wall of the first shell plate and the inner wall of the second shell plate are in contact with the positioning plate, and when making the rear shell, the inner wall of the third shell plate and the inner wall of the fourth shell plate are in contact with the positioning plate; when welding the assembly plate and the front shell, the assembly plate and the positioning plate are attached and fixed with bolts to position the assembly plate, and then the assembly plate and the front shell are fixed by welding.

[0017] Compared with the prior art, the ship sonar assembly structure and sonar assembly method of the embodiment of the present invention have the following beneficial effects: a protective cover and a transition plate are welded on the hull. Since the front end of the outer shell is connected to the hull through the transition plate, after the sonar device is located in the assembly cavity of the protective cover and fixedly connected to the assembly plate, the front end of the sonar device can extend out of the protective cover and be immersed in water without exceeding the transition plate. Therefore, the sonar device will not exceed the hull, thereby effectively protecting the sonar device. Moreover, the inner diameter of the transition plate gradually increases from the outer shell to the hull. The internal contour of the transition plate matches the sound wave propagation contour of the sonar device, thereby meeting the detection angle requirement of the sonar device and effectively ensuring the detection range of the sonar device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the ship sonar assembly structure of the present invention;

[0019] Figure 2 yes Figure 1 A cross-sectional view of the ship sonar assembly structure along the MM line;

[0020] Figure 3 yes Figure 1 A right side view of a ship sonar assembly structure;

[0021] Figure 4 It is a structural schematic diagram of the protective cover of the ship sonar assembly structure of the present invention;

[0022] Figure 5 yes Figure 4 A cross-sectional view of the protective cover along line AA;

[0023] Figure 6 yes Figure 4 A cross-sectional view of the protective cover along line BB;

[0024] Figure 7 It is a structural schematic diagram of a positioning tool for a ship sonar assembly structure of the present invention;

[0025] Figure 8 It is a schematic diagram of the cooperation between the protective cover and the positioning tooling of the ship sonar assembly structure of the present invention;

[0026] Fig. 9 The present invention is a schematic structural diagram of a sonar device of a ship sonar assembly structure.

[0027] In the figure, 1, hull, 2, transition plate, 3, protective cover, 31, outer shell, 311, front shell, 3111, first shell plate, 3112, second shell plate, 312, rear shell, 3121, third shell plate, 3122, fourth shell plate, 313, end plate, 32, assembly plate, 321, first plate body, 322, second plate body, 323, assembly hole, 33, assembly cavity, 4, sonar equipment, 41, detection head, 42, transducer, 43, watertight cable, 44, connecting plate, 5, positioning tooling, 51, positioning plate, 511, positioning hole, 52, partition, 53, baffle. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] A preferred embodiment of a ship sonar assembly structure of the present invention is as follows Figures 1 to 9 As shown, the ship sonar assembly structure includes a hull 1, a protective cover 3, a transition plate 2 and a sonar device 4. The protective cover 3 is used to protect the sonar device 4, and the transition plate 2 is used to connect the protective cover 3 and the hull 1. When the protective cover 3, the hull 1 and the transition plate 2 are welded, all welds are ensured to be watertight to ensure the protection effect of the sonar device 4.

[0030] The protective cover 3 includes an outer shell 31 and an assembly plate 32. The outer shell 31 is integrally embedded in the hull 1, and the assembly plate 32 is welded and fixed to the outer shell 31. The outer shell 31 is a cylindrical structure, and the outer shell 31 has an assembly cavity 33. The assembly plate 32 is located in the assembly cavity 33, and the assembly plate 32 is welded and fixed to the outer shell 31. The sonar device 4 is disposed in the assembly cavity 33 and is fixedly connected to the assembly plate 32, that is, the assembly plate 32 is used to fix the sonar device 4, and the sonar device 4 is assembled in the assembly cavity 33 of the outer shell 31 along the front-rear direction.

[0031] The shell 31 has a front end and a rear end, wherein the front end of the shell 31 faces the bow of the hull 1, and the rear end of the shell 31 faces the stern of the hull 1, that is, the front and rear directions of the protective cover 3 and the transition plate 2 are the same as the front and rear directions of the hull 1. The front end of the shell 31 is welded and fixed to the transition plate 2, and the front end of the transition plate 2 is welded and fixed to the hull 1, so that the transition plate 2 is connected between the shell 31 and the hull 1. After the sonar device 4 is installed in the assembly cavity 33 of the shell 31, the front end of the sonar device 4 extends out of the shell 31 and is located in the transition plate 2, and at the same time, the sonar device 4 does not exceed the hull 1, which effectively protects the sonar device 4.

[0032] The transition plate 2 is a circumferentially closed structure, wherein the circumferential direction refers to the direction around the center line in the front-rear direction. The inner diameter of the transition plate 2 gradually increases along the direction from the outer shell 31 to the hull 1, so that the transition plate 2 presents an open structure, and the opening angle of the transition plate 2 meets the detection angle requirements of the sonar device 4. When the sonar device 4 is working, the propagation direction of the sound wave matches the contour of the transition plate 2, which effectively ensures the detection range of the sonar device 4.

[0033] The ship sonar assembly structure welds a protective cover 3 and a transition plate 2 on the hull 1. Since the front end of the outer shell 31 is connected to the hull 1 through the transition plate 2, after the sonar device 4 is located in the assembly cavity 33 of the protective cover 3 and is fixedly connected to the assembly plate 32, the front end of the sonar device 4 can extend out of the protective cover 3 and be immersed in water without exceeding the transition plate 2. Therefore, the sonar device 4 will not exceed the hull 1, effectively protecting the sonar device 4; and the inner diameter of the transition plate 2 gradually increases from the outer shell 31 to the hull 1, and the internal contour of the transition plate 2 matches the sound wave propagation contour of the sonar device 4, meeting the detection angle requirements of the sonar device 4, and effectively ensuring the detection range of the sonar device 4.

[0034] Preferably, the outer shell 31 includes a front shell 311, a rear shell 312 and an end plate 313. The front shell 311 is welded and fixed to the rear shell 312. The assembly plate 32 is welded and fixed to the front shell 311. The front end of the front shell 311 is smoothly connected to the transition plate 2. The end plate 313 is welded and fixed to the rear end of the rear shell 312.

[0035] The housing 31 is composed of a front housing 311, a rear housing 312 and an end plate 313. The front housing 311 and the rear housing 312 are welded and fixed. During manufacturing, the front housing 311 and the rear housing 312 can be separately formed, and then the assembly plate 32 is welded to the front housing 311, and the end plate 313 is welded to the rear housing 312. After the assembly plate 32 and the end plate 313 are welded and fixed respectively, the front housing 311 and the rear housing 312 are welded and fixed in the front-to-back direction, so as to facilitate the assembly of the end plate 313 and the assembly plate 32, and also effectively control the accuracy of the welding between the assembly plate 32 and the front housing. In this embodiment, the end plate 313 has a central hole for the watertight cable 43 of the sonar device 4 to pass through.

[0036] Preferably, the front shell 311 includes a first shell plate 3111 and a second shell plate 3112, and the rear shell 312 includes a third shell plate 3121 and a fourth shell plate 3122. The first shell plate 3111, the second shell plate 3112, the third shell plate 3121 and the fourth shell plate 3122 are all U-shaped structures. The first shell plate 3111 and the second shell plate 3112 are arranged opposite to each other and welded and fixed, and the third shell plate 3121 and the fourth shell plate 3122 are arranged opposite to each other and welded and fixed.

[0037] The front shell 311 is formed by welding and fixing a U-shaped first shell plate 3111 and a second shell plate 3112, and the rear shell 312 is formed by welding and fixing a U-shaped third shell plate 3121 and a fourth shell plate 3122. The first shell plate 3111, the second shell plate 3112, the third shell plate 3121 and the fourth shell plate 3122 can be manufactured separately, and after being manufactured and formed, the positioning tool 5 is used to complete the splicing, which helps to control the manufacturing accuracy of the first shell plate 3111, the second shell plate 3112, the third shell plate 3121 and the fourth shell plate 3122.

[0038] In this embodiment, the first shell plate 3111, the second shell plate 3112, the third shell plate 3121 and the fourth shell plate 3122 are all U-shaped structures, and there are only two welds between the first shell plate 3111 and the second shell plate 3112, and there are also only two welds between the third shell plate 3121 and the fourth shell plate 3122. Reducing the number of welds helps to increase the strength and manufacturing accuracy of the shell. Since the dimensions of the front and rear directions of the shell 31 are consistent, the specifications of the first shell plate 3111, the second shell plate 3112, the third shell plate 3121 and the fourth shell plate 3122 are the same and can be used interchangeably, which simplifies the manufacturing process and the structure of the protective cover 3, making the protective cover 3 simple to manufacture, easy to operate, and highly versatile and reliable.

[0039] Preferably, the assembly plate 32 includes a first plate body 321 and a second plate body 322, and the first plate body 321 and the second plate body 322 are arranged opposite to each other in a front-rear direction perpendicular to the hull 1. At least two assembly holes 323 are provided on the first plate body 321 and the second plate body 322, and the assembly holes 323 are used to pass bolts. The sonar equipment 4 is connected to the first plate body 321 and the second plate body 322 by bolts.

[0040] The assembly plate 32 is formed by a first plate body 321 and a second plate body 322 that are arranged relatively to each other. The space between the first plate body 321 and the second plate body 322 can be used to accommodate the sonar device 4. Assembly holes 323 are set on the first plate body 321 and the second plate body 322 and are bolted to the sonar device 4. After the protective cover 3 is manufactured, it can be fixed to the assembly plate 32, which is also convenient for disassembly and maintenance of the sonar device 4 at a later time.

[0041] Preferably, the sonar device 4 includes a detection head 41, a transducer 42 and a watertight cable 43. The detection head 41 is located at the front end of the transducer 42. The watertight cable 43 is electrically connected to the transducer 42. A connecting plate 44 is provided at the connecting position between the detection head 41 and the transducer 42. The connecting plate 44 is provided with a plurality of bolt holes. The connecting plate 44 and the first plate body 321 are bolted together, and the connecting plate 44 and the second plate body 322 are bolted together.

[0042] The sonar device 4 is composed of a detection head 41, a transducer 42 and a watertight cable 43. After the connecting plate 44 is bolted to the first plate body 321 and the second plate body 322, the detection head 41 is located at the front end of the assembly plate 32, so the detection head 41 extends into the transition plate 2, but the head on one side does not exceed the hull 1. The transition plate 2 and the protective cover 3 protect the detection head 41. The transducer 42 is located at the rear end of the assembly plate 32. After the connecting plate 44 is connected to the first plate body 321 and the second plate body 322, a seal is formed. The transducer 42 is in the assembly cavity 33 of the protective cover 3. The assembly cavity 33 is a watertight space to protect the transducer 42.

[0043] Preferably, the transition plate 2 is trumpet-shaped, and there is a smooth transition between the transition plate 2 and the hull 1 , and between the transition plate 2 and the outer shell 31 .

[0044] The transition plate 2 is a trumpet-shaped structure, so that the inner contour of the transition plate 2 is a curve, ensuring smooth connection between the transition plate 2 and the hull 1, and between the transition plate 2 and the outer shell 31, reducing stress and also protecting the sonar equipment 4 therein.

[0045] The present invention also provides a preferred embodiment of a sonar assembly method, which comprises the following steps:

[0046] S1, using the positioning tool 5 to position and manufacture the front shell 311 and the rear shell 312 respectively, welding and fixing the rear shell 312 and the end plate 313, and then using the positioning tool 5 to weld and fix the assembly plate 32 and the front shell 311, assembling the protective cover 3, and welding and fixing the outer shell 31 of the protective cover 3 and the hull 1;

[0047] S2, welding and fixing the front end of the outer shell 31 of the protective cover 3 to the transition plate 2, and then welding and fixing the transition plate 2 to the hull 1;

[0048] S3, placing the sonar device 4 into the assembly cavity 33 of the housing 31, and fixing the sonar device 4 to the assembly plate 32 with bolts.

[0049] In step S1, the front shell 311, the rear shell 312 and the assembly plate 32 and the front shell 311 are respectively manufactured by the positioning tool 5, so that the manufacturing accuracy of the assembly plate 32, the front shell 311 and the rear shell 312 and the assembly accuracy between each other can be ensured. In manufacturing the outer shell 31 and the assembly plate 32, the first shell plate 3111, the second shell plate 3112, the third shell plate 3121, the fourth shell plate 3122, the first plate body 321, the second plate body 322 and the end plate 313 are firstly cut and manufactured, and the assembly holes 323 are formed by machining on the first plate body 321 and the second plate body 322. After machining and forming each part, each part is subjected to precision inspection to ensure the precision of the protective cover 3.

[0050] In step S2 , when welding and fixing the transition plate 2 , the protective cover 3 and the hull 1 , it is ensured that all welds are watertight to avoid water leakage and damage to the sonar equipment 4 .

[0051] Preferably, in step S1, the positioning fixture 5 includes a positioning plate 51, a partition plate 52 and a baffle plate 53, the partition plate 52 and the baffle plate 53 are located on the same side of the positioning plate 51, the positioning plate 51, the partition plate 52 and the baffle plate 53 are vertically welded and fixed in pairs, the positioning plate 51 is provided with a positioning hole 511, the positioning hole 511 corresponds to the assembly hole 323 of the assembly plate 32 along the front-to-back direction, and the outer contour of the positioning plate 51 corresponds to the inner contour of the front shell 311; in step S1 When making the front shell 311, the inner wall of the first shell plate 3111 and the inner wall of the second shell plate 3112 are in contact with the positioning plate 51. When making the rear shell 312, the inner wall of the third shell plate 3122 and the inner wall of the fourth shell plate 3122 are in contact with the positioning plate 51. When welding the assembly plate 32 and the front shell 311, the assembly plate 32 and the positioning plate 51 are attached and fixed with bolts to position the assembly plate 32, and then the assembly plate 32 and the front shell 311 are fixed by welding.

[0052] In step S1, the positioning plate 51, the partition plate 52 and the baffle plate 53 are first cut and then welded to each other to make the positioning tool 5, so that the outer contour of the positioning plate 51 corresponds to the inner contour of the front shell body 311; when the inner walls of the first shell plate 3111 and the second shell plate 3112 are in contact with the positioning plate 51, the positioning plate 51 can be used to locate the relative positions of the first shell plate 3111, the second shell plate 3112, the third shell plate 3121 and the fourth shell plate 3122, thereby ensuring the manufacturing accuracy of the welded shell 31, so as to effectively protect the sonar equipment 4 and ensure that the sonar equipment 4 has a good working environment.

[0053] The positioning hole 511 on the positioning plate 51 corresponds to the position of the assembly plate 32 on the assembly plate 32. When welding the assembly plate 32, the bolt passes through the positioning hole 511 and the assembly hole 323 to fix the assembly plate 32 and the positioning plate 51. The assembly plate 32 is positioned using the positioning plate 51. This ensures that the first plate body 321 and the second plate body 322 of the assembly plate 32 are in the same position in the front-to-back direction and are perpendicular to the front shell body 311, which also ensures the installation accuracy of the subsequent sonar equipment 4, effectively ensuring that the sound wave detection angle of the sonar equipment 4 matches the opening angle of the transition plate 2, thereby meeting the detection angle requirement of the sonar equipment 4.

[0054] In summary, the embodiments of the present invention provide a ship sonar assembly structure and a sonar assembly method, which weld a protective cover and a transition plate on the hull. Since the front end of the outer shell is connected to the hull through the transition plate, after the sonar device is located in the assembly cavity of the protective cover and fixedly connected to the assembly plate, the front end of the sonar device can extend out of the protective cover and be immersed in water without exceeding the transition plate. Therefore, the sonar device will not exceed the hull, effectively protecting the sonar device; and the inner diameter of the transition plate gradually increases from the outer shell to the hull, and the internal contour of the transition plate matches the sound wave propagation contour of the sonar device, meeting the detection angle requirements of the sonar device, and effectively ensuring the detection range of the sonar device.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A ship sonar assembly structure, characterized in that: The invention comprises a hull (1), a protective cover (3), a transition plate (2) and a sonar device (4); the protective cover (3) comprises an outer shell (31) and an assembly plate (32) fixedly connected to the outer shell (31); the outer shell (31) has an assembly cavity (33); the assembly plate (32) is arranged in the assembly cavity (33) and is welded and fixed to the outer shell (31); the sonar device (4) is arranged in the assembly cavity (33) and is fixedly connected to the assembly plate (32); the outer shell (31) has a front end and a rear end; the front end of the outer shell (31) faces the bow of the hull (1); the transition plate (2) is connected between the front end of the outer shell (31) and the hull (1); the transition plate (2) is a circumferentially closed structure; the inner diameter of the transition plate (2) gradually increases along the direction from the outer shell (31) to the hull (1).

2. The ship sonar assembly structure according to claim 1, characterized in that: The housing (31) comprises a front housing (311), a rear housing (312) and an end plate (313); the front housing (311) is fixed to the rear housing (312) by welding; the assembly plate (32) is fixed to the front housing (311) by welding; the front end of the front housing (311) is smoothly connected to the transition plate (2); and the end plate (313) is fixed to the rear end of the rear housing (312) by welding.

3. The ship sonar assembly structure according to claim 2, characterized in that: The front shell (311) includes a first shell plate (3111) and a second shell plate (3112), and the rear shell (312) includes a third shell plate (3121) and a fourth shell plate (3122). The first shell plate (3111), the second shell plate (3112), the third shell plate (3121) and the fourth shell plate (3122) are all U-shaped structures. The first shell plate (3111) and the second shell plate (3112) are arranged opposite to each other and are fixed by welding, and the third shell plate (3121) and the fourth shell plate (3122) are arranged opposite to each other and are fixed by welding.

4. The ship sonar assembly structure according to any one of claims 1 to 3, characterized in that: The assembly plate (32) comprises a first plate body (321) and a second plate body (322), wherein the first plate body (321) and the second plate body (322) are arranged opposite to each other in a front-rear direction perpendicular to the hull (1), and at least two assembly holes (323) are provided on the first plate body (321) and the second plate body (322), wherein the assembly holes (323) are used for inserting bolts, and the sonar device (4) is connected to the first plate body (321) and the second plate body (322) by bolts.

5. The ship sonar assembly structure according to claim 4, characterized in that: The sonar device (4) comprises a detection head (41), a transducer (42) and a watertight cable (43), wherein the detection head (41) is located at the front end of the transducer (42), the watertight cable (43) is electrically connected to the transducer (42), a connecting plate (44) is provided at the connection position between the detection head (41) and the transducer (42), a plurality of bolt holes are provided on the connecting plate (44), and the connecting plate (44) and the first plate body (321) are connected by bolts, and the connecting plate (44) and the second plate body (322) are connected by bolts.

6. The ship sonar assembly structure according to any one of claims 1 to 3, characterized in that: The transition plate (2) is trumpet-shaped, and there is a smooth transition between the transition plate (2) and the hull (1), and between the transition plate (2) and the outer shell (31).

7. A sonar assembly method, used for the ship sonar assembly structure according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, using a positioning tool (5) to position and manufacture the front shell (311) and the rear shell (312), welding and fixing the rear shell (312) and the end plate (313), then using the positioning tool (5) to weld and fix the assembly plate (32) and the front shell (311), assembling the protective cover (3), and welding and fixing the outer shell (31) of the protective cover (3) and the hull (1); S2, welding and fixing the front end of the outer shell (31) of the protective cover (3) to the transition plate (2), and then welding and fixing the transition plate (2) to the hull (1); S3, placing the sonar device (4) into the assembly cavity (33) of the housing (31), and fixing the sonar device (4) and the assembly plate (32) with bolts.

8. The sonar assembly method according to claim 7, characterized in that: In step S1, the positioning tool (5) includes a positioning plate (51), a partition plate (52) and a baffle plate (53), wherein the partition plate (52) and the baffle plate (53) are located on the same side of the positioning plate (51), and the positioning plate (51), the partition plate (52) and the baffle plate (53) are vertically welded and fixed in pairs, and the positioning plate (51) is provided with a positioning hole (511), and the positioning hole (511) corresponds to the assembly hole (323) of the assembly plate (32) along the front-to-back direction, and the outer contour of the positioning plate (51) corresponds to the inner contour of the front shell (311); In step S1, when manufacturing the front shell (311), the inner wall of the first shell plate (3111) and the inner wall of the second shell plate (3112) are brought into contact with the positioning plate (51); when manufacturing the rear shell (312), the inner wall of the third shell plate and the inner wall of the fourth shell plate (3122) are brought into contact with the positioning plate (51); When welding the assembly plate (32) and the front shell (311), the assembly plate (32) and the positioning plate (51) are attached and fixed with bolts to position the assembly plate (32), and then the assembly plate (32) and the front shell (311) are fixed by welding.

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