A water surface detection device

Abstract

This invention discloses a water surface detection device, comprising: a hull; and side-scan sonar units disposed on both sides of the hull. The hull is equipped with a synchronous drive assembly, and the side-scan sonar units are fixedly connected to both sides of the synchronous drive assembly. The synchronous drive assembly controls the side-scan sonar units to extend outwards towards the water surface. Fixed wings are provided on both sides of the side-scan sonar units, and the fixed wings are fixedly connected to both sides of the side-scan sonar units by a reinforcing assembly. By setting a synchronous drive assembly on the hull, and mounting the side-scan sonar units on both sides of the synchronous drive assembly, the synchronous drive assembly controls the side-scan sonar units to extend synchronously to both sides of the hull. The fixed wings on both sides of the side-scan sonar units counteract the elevation angle of the side-scan sonar units during towing, thereby stabilizing the attitude of the side-scan sonar units, ensuring the quality of the acoustic image, and improving detection accuracy. Furthermore, the fixed wings are detachable, facilitating their disassembly, assembly, and maintenance.

Description

Technical Field

[0001] This invention belongs to the field of detection equipment technology, and specifically relates to a water surface detection device. Background Technology

[0002] Side-scan sonar is a device that uses echo sounding to detect seabed topography and underwater objects. Also known as a side-scan sonar or seabed topography instrument, its transducer array is mounted inside the hull or towed body, emitting fan-shaped acoustic pulses to the sides and downwards during navigation. Side-scan sonar typically operates at frequencies from tens to hundreds of kilohertz, with pulse durations less than 1 millisecond. The effective range is generally 300–600 meters, and the towed body operates at speeds of 3–6 knots, with a maximum limit of 16 knots. For short-range detection, side-scan sonar offers high resolution, capable of detecting a 5-centimeter diameter cable at a distance of 150 meters. Long-range side-scan sonar used for deep-sea geological surveys operates at frequencies in the thousands of kilohertz, with detection ranges exceeding 20 kilometers. For rapid, large-area measurements, the instrument uses a microprocessor to correct parameters such as sound velocity, slant distance, and towed body height above the seabed, obtaining distortion-free images. These images, when stitched together, can be used to create accurate seabed topographic maps. Different seabed materials, such as mud, sand, and rock, can be identified from the images recorded by side-scan sonar. Small field-of-view magnified images obtained using digital signal processing techniques can distinguish details of the target.

[0003] Side-scan sonar is typically mounted on both sides of a ship and moved by the ship. However, in the current technology, the side-scan sonar has low attitude stability when moving in water, is prone to elevation angle, and its movement attitude is easily deformed, which affects the quality of the acoustic image and thus reduces the detection accuracy. Summary of the Invention

[0004] The purpose of this invention is to solve the aforementioned technical problems existing in the prior art and to provide a surface detection device. This device involves installing a synchronous drive assembly on the hull, with the side-scan sonar unit mounted on both sides of the assembly. The synchronous drive assembly controls the side-scan sonar unit to extend synchronously to both sides of the hull. Fixed wings are installed on both sides of the side-scan sonar unit. The fixed wings counteract the elevation angle of the side-scan sonar unit during towing, thereby stabilizing the attitude of the side-scan sonar unit, ensuring the quality of the acoustic image, and improving detection accuracy. The fixed wings are reinforced on both sides of the side-scan sonar unit by a reinforcement assembly, improving the installation stability of the fixed wings. Furthermore, the fixed wings are detachable, facilitating disassembly, assembly, and maintenance.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A surface detection device includes: a hull; and side-scan sonar units mounted on both sides of the hull. The hull is equipped with a synchronous drive assembly, and the side-scan sonar units are fixedly connected to both sides of the synchronous drive assembly. The synchronous drive assembly controls the side-scan sonar units to extend outwards towards the water surface. Fixed wings are provided on both sides of the side-scan sonar units, and the fixed wings are fixedly connected to both sides of the side-scan sonar units by reinforcement components. This invention utilizes a synchronous drive assembly mounted on the hull, with the side-scan sonar units mounted on both sides of the synchronous drive assembly. The synchronous drive assembly controls the side-scan sonar units to extend synchronously to both sides of the hull. The fixed wings on both sides of the side-scan sonar units counteract the elevation angle of the side-scan sonar units during towing, thereby stabilizing the attitude of the side-scan sonar units, ensuring the quality of the acoustic image, and improving detection accuracy. The fixed wings, reinforced by reinforcement components on both sides of the side-scan sonar units, improve the installation stability of the fixed wings. Furthermore, the fixed wings are detachable, facilitating disassembly, assembly, and maintenance.

[0007] Furthermore, the reinforcement assembly includes a semi-circular sleeve one and a semi-circular sleeve two. Two fixed wings are respectively fixedly connected to the outer walls of semi-circular sleeve one and semi-circular sleeve two. After being fixed, semi-circular sleeve one and semi-circular sleeve two are clamped to the outer wall of the side-scan sonar body. The two fixed wings are respectively fixed to semi-circular sleeve one and semi-circular sleeve two, and then semi-circular sleeve one and semi-circular sleeve two are fixed and clamped to the outer wall of the side-scan sonar body, thereby completing the installation of the fixed wings.

[0008] Furthermore, the two ends of the first semicircular jacket are fixedly connected to limiting sleeves, and the two ends of the second semicircular jacket are correspondingly fixedly connected to limiting parts, with the limiting parts inserted into the limiting sleeves. First, the first semicircular jacket is placed tightly against one side of the side-scan sonar body. Then, the limiting parts are inserted into the limiting sleeves, allowing the second semicircular jacket to slide and engage with the first semicircular jacket. The setting of the limiting parts and limiting sleeves increases the contact area between the first and second semicircular jackets, thereby improving the connection stability between the first and second semicircular jackets.

[0009] Furthermore, the end of the limiting sleeve is provided with a stepped hole, into which a locking screw is screwed. The end of the locking screw passes through the stepped hole and is tightened onto the limiting part. The upper part of the locking screw is used to fix the limiting sleeve and the limiting part together. The stepped hole facilitates the installation of the locking screw and also increases the aesthetics of the installation.

[0010] Furthermore, positioning parts are provided on both sides of the side-scan sonar body, and positioning grooves are provided on the first and second semi-circular sleeves respectively. The positioning grooves and positioning parts play a positioning role in the installation of the first and second semi-circular sleeves, while increasing the contact area between the first and second semi-circular sleeves and the side-scan sonar body, thereby improving the installation stability of the first and second semi-circular sleeves.

[0011] Furthermore, a drive unit is also located below the side-scan sonar body, which is fixedly connected to the fixed wing via a connecting frame. The drive unit is used to horizontally drive the side-scan sonar body to move, and can actively correct the direction of movement of the side-scan sonar body, thereby stabilizing the attitude of the side-scan sonar body and improving detection accuracy.

[0012] Furthermore, one end of the connecting frame is fixedly connected to the drive component, and a fixing seat is provided at the bottom of the fixed wing. The other end of the connecting frame is fixedly connected to the fixing seat via fastening screws. The connecting frame is used to fix the drive component and the fixed wing together.

[0013] Furthermore, the drive unit includes a drive body, a protective cover, and a propeller. The protective cover is fixedly connected to the tail of the drive body, and the propeller is located inside the protective cover. The propeller is rotatably connected to the tail of the drive body, and the drive body drives the propeller to rotate. The drive body drives the propeller to operate, and the rotation of the propeller provides power to the side-scan sonar body. The protective cover can protect the propeller. By adding horizontal thrust at the tail, the movement orientation of the side-scan sonar body can be actively corrected, thereby stabilizing the attitude of the side-scan sonar body and improving detection accuracy.

[0014] Furthermore, the synchronous drive assembly includes a drive motor, a synchronous drive gear, and a synchronous rack. The drive motor is fixedly connected to the hull, the synchronous drive gear is rotatably connected to the drive motor, and the synchronous rack meshes with the synchronous drive gear. The synchronous rack is meshed on both sides of the synchronous drive gear. Slide rails are fixedly connected to both sides of the hull, and counterweight sliders are slidably connected to the slide rails. The counterweight sliders are fixedly connected to the synchronous racks, and connecting rods are fixedly connected to the counterweight sliders. The drive motor controls the rotation of the synchronous drive gear, thereby controlling the synchronous racks to drive the counterweight sliders synchronously, enabling the side-scan sonar units on both sides to move synchronously. By controlling the rotation of the synchronous drive gear through the drive motor, the rotation of the synchronous drive gear drives the synchronous racks to move in opposite directions. The synchronous racks drive the counterweight sliders to slide along the slide rails, thereby enabling the counterweight sliders to drive the side-scan sonar units to move synchronously. Controlling the synchronous operation of the side-scan sonar units on both sides with a single motor significantly saves energy consumption, and the synchronous movement of the side-scan sonars greatly improves the adjustment efficiency of the side-scan sonars.

[0015] Furthermore, a lifting screw is rotatably connected to the end of the connecting rod away from the hull, and a base is rotatably connected to the bottom of the lifting screw. Both ends of the bottom of the base are fixedly connected to snap-fit ​​components. An adjustment rail is provided on the top of the side-scan sonar body, and a buckle is slidably connected on the adjustment rail. The snap-fit ​​component is locked in the buckle. The snap-fit ​​component includes a base plate and a clamping plate. The base plate is fixedly connected to the base, and a rotating seat is fixedly connected to the base plate. A rotating shaft is rotatably connected to the top of the clamping plate and the rotating seat. A limiting sleeve is provided at the end of the rotating shaft. A clamping part is provided at the bottom of the clamping plate corresponding to the buckle, and the clamping part is locked in the buckle. The rotation of the lifting screw controls the raising and lowering of the base and the side-scan sonar body. Since the lifting screw is rotatably connected to the base, the rotation of the lifting screw will not cause the side-scan sonar body to rotate. Loosen the limit sleeve and rotate the clamping plate so that the clamping part on the clamping plate is locked in the buckle, thereby locking the clamping parts in place and fixing the side-scan sonar body and the base together through the clamping parts. This makes the installation of the side-scan sonar body quick and easy.

[0016] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0017] The present invention features fixed wings on both sides of the side-scan sonar body. The fixed wings offset the elevation angle of the side-scan sonar body during towing, thereby stabilizing the attitude of the side-scan sonar body, ensuring the quality of the acoustic image and improving the detection accuracy. The fixed wings are reinforced on both sides of the side-scan sonar body by the reinforcement components, which improves the installation stability of the fixed wings. At the same time, the fixed wings are detachable, which facilitates the disassembly, assembly and maintenance of the fixed wings.

[0018] The reinforcement assembly in this invention includes a semi-circular sleeve one and a semi-circular sleeve two. Two fixed wings are respectively fixedly connected to the outer walls of the semi-circular sleeve one and the semi-circular sleeve two. After being fixed, the semi-circular sleeve one and the semi-circular sleeve two are clamped to the outer wall of the side-scan sonar body. The two fixed wings are respectively fixed to the semi-circular sleeve one and the semi-circular sleeve two, and then the semi-circular sleeve one and the semi-circular sleeve two are fixed and clamped to the outer wall of the side-scan sonar body, thereby completing the installation of the fixed wings.

[0019] In this invention, the driving component includes a driving body, a protective cover, and a propeller. The protective cover is fixedly connected to the tail of the driving body, and the propeller is located inside the protective cover. The propeller is rotatably connected to the tail of the driving body, and the driving body drives the propeller to rotate. The driving body drives the propeller to operate, and the rotation of the propeller provides power to the side-scan sonar body. The protective cover can protect the propeller. By adding horizontal thrust at the tail, the movement orientation of the side-scan sonar body can be actively corrected, thereby stabilizing the attitude of the side-scan sonar body and improving detection accuracy.

[0020] The synchronous drive assembly of this invention includes a drive motor, a synchronous drive gear, and a synchronous rack. The drive motor is fixedly connected to the hull, the synchronous drive gear is rotatably connected to the drive motor, and the synchronous rack meshes with the synchronous drive gear, with the rack meshing on both sides of the gear. Slide rails are fixedly connected to both sides of the hull, and counterweight sliders are slidably connected to these rails. The counterweight sliders are fixedly connected to the synchronous racks, and connecting rods are fixedly connected to the counterweight sliders. The drive motor controls the rotation of the synchronous drive gear, thereby controlling the synchronous racks to drive the counterweight sliders synchronously, enabling the side-scan sonar units on both sides to move synchronously. By controlling the synchronous drive gear to rotate, the drive motor causes the synchronous racks to move in opposite directions, which in turn causes the counterweight sliders to slide along the slide rails, thus enabling the counterweight sliders to drive the side-scan sonar units to move synchronously. Controlling the synchronous operation of the side-scan sonar units on both sides with a single motor significantly saves energy consumption, and the synchronous movement of the side-scan sonars greatly improves their adjustment efficiency. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the structure of a water surface detection device according to the present invention;

[0023] Figure 2 This is a schematic diagram of the connection between the side-scan sonar body and the drive component in this invention;

[0024] Figure 3 This is a schematic diagram of the structure of the side-scan sonar body in this invention;

[0025] Figure 4 This is a schematic diagram of the semi-circular jacket in this invention;

[0026] Figure 5 This is a schematic diagram of the semi-circular jacket II in this invention;

[0027] Figure 6 This is a schematic diagram of the driving component in this invention;

[0028] Figure 7 This is a schematic diagram of the connector structure in this invention;

[0029] Figure 8 for Figure 1 Enlarged structural diagram at point A in the middle.

[0030] In the diagram, 1-side-scan sonar body; 2-fixed wing; 3-reinforcement component; 4-semi-circular jacket one; 5-semi-circular jacket two; 6-limiting sleeve; 7-limiting part; 8-stepped hole; 9-locking screw; 10-positioning part; 11-positioning groove; 12-drive component; 13-connecting frame; 14-fixed seat; 15-drive body; 16-protective cover; 17-propeller; 18-hull; 19-synchronous drive component; 20-clamping part; 21-synchronous drive gear; 22-synchronous rack; 23-slide rail; 24-counterweight slider; 25-connecting rod; 26-lifting screw; 27-base; 28-clamping part; 29-adjusting rail; 30-buckle; 31-base plate; 32-clamping plate; 33-rotating seat; 34-rotating shaft; 35-limiting sleeve. Detailed Implementation

[0031] like Figures 1 to 8 As shown, a water surface detection device according to the present invention includes: a hull 18; and side-scan sonar bodies 1 disposed on both sides of the hull 18. The hull 18 is provided with a synchronous drive assembly 19, and the side-scan sonar bodies 1 are fixedly connected to both sides of the synchronous drive assembly 19. The synchronous drive assembly 19 controls the side-scan sonar bodies 1 to extend out of the water surface. Fixed wings 2 are provided on both sides of the side-scan sonar bodies 1, and the fixed wings 2 are fixedly connected to both sides of the side-scan sonar bodies 1 by a reinforcing assembly 3.

[0032] The reinforcement component 3 includes a semi-circular sleeve 1 4 and a semi-circular sleeve 2 5. Two fixed wings 2 are respectively fixedly connected to the outer walls of the semi-circular sleeve 1 4 and the semi-circular sleeve 2 5. After the semi-circular sleeve 1 4 and the semi-circular sleeve 2 5 are fixed, they are clamped to the outer wall of the side-scan sonar body 1, thus completing the installation of the fixed wings 2. The two ends of the semi-circular sleeve 1 4 are fixedly connected to limiting sleeves 6, and the two ends of the semi-circular sleeve 2 5 are correspondingly fixedly connected to limiting parts 7, which are inserted into the limiting sleeves 6. First, the semi-circular sleeve 4 is tightly attached to one side of the side-scan sonar body 1. Then, the limiting part 7 is inserted into the limiting sleeve 6, allowing the semi-circular sleeve 2 5 to slide and engage with the semi-circular sleeve 4. The setting of the limiting part 7 and the limiting sleeve 6 increases the contact area between the semi-circular sleeve 4 and the semi-circular sleeve 2 5, thereby improving the connection stability of the semi-circular sleeve 4 and the semi-circular sleeve 2 5. The end of the limiting sleeve 6 is provided with a stepped hole 8, and a locking screw 9 is screwed into the stepped hole 8. The end of the locking screw 9 passes through the stepped hole 8 and is tightened onto the limiting part 7. The upper part of the locking screw 9 is used to fix the connection between the limiting sleeve 6 and the limiting part 7. The setting of the stepped hole 8 facilitates the installation of the locking screw 9 and also increases the aesthetics of the installation of the locking screw 9.

[0033] The side-scan sonar body 1 has positioning parts 10 on both sides, and semi-circular sleeve 1 4 and semi-circular sleeve 2 5 are respectively provided with positioning grooves 11. The positioning grooves 11 and positioning parts 10 play a positioning role in the installation of semi-circular sleeve 1 4 and semi-circular sleeve 2 5, and at the same time increase the contact area between semi-circular sleeve 1 4, semi-circular sleeve 2 5 and side-scan sonar body 1, thereby improving the installation stability of semi-circular sleeve 1 4 and semi-circular sleeve 2 5.

[0034] A drive unit 12 is also provided below the side-scan sonar body 1. The drive unit 12 is fixedly connected to the fixed wing 2 via a connecting frame 13. The drive unit 12 is used to horizontally drive the side-scan sonar body 1 to move, and can actively correct the direction of movement of the side-scan sonar body 1, thereby stabilizing the attitude of the side-scan sonar body 1 and improving the detection accuracy. One end of the connecting frame 13 is fixedly connected to the drive unit 12, and the bottom of the fixed wing 2 is provided with a fixing seat 14. The other end of the connecting frame 13 is fixedly connected to the fixing seat 14 via a fastening screw. The connecting frame 13 is used to fix the drive unit 12 and the fixed wing 2. The drive unit 12 includes a drive body 15, a protective cover 16, and a propeller 17. The protective cover 16 is fixedly connected to the tail of the drive body 15, and the propeller 17 is located inside the protective cover 16. The propeller 17 is rotatably connected to the tail of the drive body 15, and the drive body 15 drives the propeller 17 to rotate. The drive unit 15 drives the propeller 17 to operate, and the rotation of the propeller 17 provides power to the side-scan sonar body 1. The protective cover 16 can protect the propeller 17. By adding horizontal thrust at the tail, the movement orientation of the side-scan sonar body 1 can be actively corrected, thereby stabilizing the attitude of the side-scan sonar body 1 and improving the detection accuracy.

[0035] The synchronous drive assembly 19 includes a drive motor, a synchronous drive gear 21, and a synchronous rack 22. The drive motor is fixedly connected to the hull 18. The synchronous drive gear 21 is rotatably connected to the drive motor. The synchronous rack 22 meshes with the synchronous drive gear 21 and is meshed on both sides of the synchronous drive gear 21. Slide rails 23 are fixedly connected to both sides of the hull 18. A counterweight slider 24 is slidably connected to the slide rail 23. The counterweight slider 24 is fixedly connected to the synchronous rack 22. A connecting rod 25 is fixedly connected to the counterweight slider 24 and is connected to the side-scan sonar body 1. The drive motor controls the synchronous drive gear 21 to rotate, thereby controlling the synchronous rack 22 to drive the counterweight slider 24 to move synchronously, so that the side-scan sonar bodies 1 on both sides move synchronously. The synchronous drive gear 21 is rotated by the drive motor. The rotation of the synchronous drive gear 21 drives the synchronous rack 22 to run in opposite directions. The synchronous rack 22 drives the counterweight slider 24 to slide along the direction of the slide rail 23, so that the counterweight slider 24 drives the side-scan sonar body 1 to move synchronously. By controlling the synchronous operation of the side-scan sonar bodies 1 on both sides by a single motor, energy consumption is greatly saved. At the same time, the side-scan sonar bodies 1 can move synchronously, which greatly improves the adjustment efficiency of the side-scan sonar bodies 1.

[0036] A lifting screw 26 is rotatably connected to the end of the connecting rod 25 away from the hull 18. A base 27 is rotatably connected to the bottom of the lifting screw 26. Both ends of the bottom of the base 27 are fixedly connected to the snap fasteners 28. An adjustment rail 29 is provided on the top of the side-scan sonar body 1. A buckle 30 is slidably connected on the adjustment rail 29. The snap fasteners 28 are snapped into the buckles 30. The snap fasteners 28 include a base plate 31 and a clamping plate 32. The base plate 31 is fixedly connected to the base 27. A rotating seat 33 is fixedly connected to the base plate 31. A rotating shaft 34 is rotatably connected to the top of the clamping plate 32 and the rotating seat 33. A limiting sleeve 35 is provided at the end of the rotating shaft 34. A clamping part 20 is provided at the bottom of the clamping plate 32 corresponding to the buckle 30. The clamping part 20 is snapped into the buckle 30. The rotation of the lifting screw 26 is used to control the lifting and lowering of the base 27 and the side-scan sonar body 1. Since the lifting screw 26 and the base 27 are rotatably connected, the rotation of the lifting screw 26 will not drive the side-scan sonar body 1 to rotate. Loosen the limit sleeve 35 and rotate the clamping plate 32 so that the clamping part 20 on the clamping plate 32 is clamped in the buckle 30, so that the clamping member clamps the buckle 30, thereby fixing the side-scan sonar body 1 and the base 27 to be fixedly connected by the clamping member, so that the side-scan sonar body 1 can be installed quickly and simply.

[0037] This invention utilizes a synchronous drive assembly 19 mounted on the hull 18. The side-scan sonar unit 1 is installed on both sides of the synchronous drive assembly 19. The synchronous drive assembly 19 controls the side-scan sonar unit 1 to extend synchronously to both sides of the hull 18. Fixed wings 2 are provided on both sides of the side-scan sonar unit 1. The fixed wings 2 offset the elevation angle of the side-scan sonar unit 1 during towing, thereby stabilizing the attitude of the side-scan sonar unit 1, ensuring the quality of the acoustic image, and improving the detection accuracy. The fixed wings 2 are reinforced on both sides of the side-scan sonar unit 1 by the reinforcement assembly 3, which improves the installation stability of the fixed wings 2. At the same time, the fixed wings 2 are detachable, which facilitates the disassembly, assembly, and maintenance of the fixed wings 2.

[0038] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A water surface detection device, comprising: hull; Its features are: The system also includes side-scan sonar units located on both sides of the hull. The hull is equipped with a synchronous drive assembly, and the side-scan sonar units are fixedly connected to both sides of the synchronous drive assembly. The synchronous drive assembly controls the side-scan sonar units to extend out of the water surface. Fixed wings are provided on both sides of the side-scan sonar units, and the fixed wings are fixedly connected to both sides of the side-scan sonar units by a reinforcement assembly. The reinforcement assembly includes a semi-circular sleeve one and a semi-circular sleeve two. The two fixed wings are respectively fixedly connected to the outer walls of the semi-circular sleeve one and the semi-circular sleeve two. After the semi-circular sleeve one and the semi-circular sleeve two are fixedly connected, they are clamped to the outer walls of the side-scan sonar units. Limiting sleeves are fixedly connected to both ends of the semi-circular sleeve one, and corresponding limiting parts are fixedly connected to both ends of the semi-circular sleeve two. The limiting parts are inserted into the limiting sleeves.

2. The water surface detection device according to claim 1, characterized in that: The end of the limiting sleeve is provided with a stepped hole, and a locking screw is screwed into the stepped hole. The end of the locking screw passes through the stepped hole and is tightened onto the limiting part.

3. The water surface detection device according to claim 1, characterized in that: Both sides of the side-scan sonar body are provided with positioning parts, and the first semi-circular jacket and the second semi-circular jacket are respectively provided with positioning grooves.

4. The water surface detection device according to claim 1, characterized in that: A drive unit is also provided below the side-scan sonar body, and the drive unit is fixedly connected to the fixed wing through a connecting frame.

5. A water surface detection device according to claim 4, characterized in that: One end of the connecting frame is fixedly connected to the driving component, the bottom of the fixed wing is provided with a fixed seat, and the other end of the connecting frame is fixedly connected to the fixed seat by a fastening screw.

6. A water surface detection device according to claim 4, characterized in that: The driving component includes a driving body, a protective cover, and a propeller. The protective cover is fixedly connected to the tail of the driving body, the propeller is located inside the protective cover, and the propeller is rotatably connected to the tail of the driving body. The driving body drives the propeller to rotate.

7. A water surface detection device according to claim 1, characterized in that: The synchronous drive assembly includes a drive motor, a synchronous drive gear, and a synchronous rack. The drive motor is fixedly connected to the hull, the synchronous drive gear is rotatably connected to the drive motor, and the synchronous rack meshes with the synchronous drive gear. The synchronous rack is meshed with both sides of the synchronous drive gear. Slide rails are fixedly connected to both sides of the hull, and counterweight sliders are slidably connected to the slide rails. The counterweight sliders are fixedly connected to the synchronous racks, and connecting rods are fixedly connected to the counterweight sliders. The connecting rods are connected to the side-scan sonar units. The drive motor controls the synchronous drive gear to rotate, thereby controlling the synchronous racks to drive the counterweight sliders to move synchronously, so that the side-scan sonar units on both sides move synchronously.

8. A water surface detection device according to claim 7, characterized in that: The end of the connecting rod away from the hull is rotatably connected to a lifting screw, and the bottom of the lifting screw is rotatably connected to a base. Both ends of the bottom of the base are fixedly connected to snap-fit ​​components. The top of the side-scan sonar body is provided with an adjustment rail, and a buckle is slidably connected to the adjustment rail. The snap-fit ​​component is fastened in the buckle. The snap-fit ​​component includes a base plate and a clamping plate. The base plate is fixedly connected to the base, and a rotating seat is fixedly connected to the base plate. The top of the clamping plate is rotatably connected to the rotating seat with a rotating shaft. The end of the rotating shaft is provided with a limiting sleeve. The bottom of the clamping plate is provided with a clamping part corresponding to the buckle, and the clamping part is fastened in the buckle.

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