Hydrophone for ease of use

Abstract

This utility model discloses an easy-to-use hydrophone, comprising: a preamplifier housed inside the hydrophone body; a movable ring disposed at the bottom of the hydrophone body; a connecting post connected to the top of the movable ring, the connecting post having a movable groove inside; a mounting rod perpendicular to the central axis of the connecting post disposed within the movable groove; a gear pivotally mounted on the mounting rod; a rack perpendicular to the central axis of the connecting post and extending radially along the movable ring disposed within the movable groove, the rack meshing with the gear; one end of the connecting rod connected to the rack, the other end extending radially beyond the movable ring; a protective shell in the form of two semi-cylindrical structures symmetrically disposed on the outside of the hydrophone body, the inner walls of the two semi-cylindrical structures connected to the other end of the connecting rod; wherein rotation of the gear drives the rack and connecting rod to extend and retract radially along the movable ring, thereby opening and closing the protective shell. This allows for integrated operation of deployment, protection, and counterweight management, significantly reducing the barrier to entry for use.

Description

Technical Field

[0001] This utility model relates to the field of hydrophone technology, and in particular to an easy-to-use hydrophone. Background Technology

[0002] Hydrophones, as core sensors for underwater acoustic detection, are widely used in marine resource exploration, underwater target identification, marine environmental monitoring, and military reconnaissance. Their working principle involves converting underwater acoustic signals into electrical signals using a sound-to-electrical converter, which are then processed by a preamplifier before being transmitted to the receiving system. With the accelerating pace of marine development, higher demands are being placed on the portability, environmental adaptability, and ease of operation of hydrophones.

[0003] Currently, traditional hydrophones suffer from fixed protective structures that cannot balance detection sensitivity and equipment protection requirements, while movable protective mechanisms lack reliable locking devices and are easily affected by water flow. These defects severely restrict the effectiveness of hydrophones in complex marine environments.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide an easy-to-use hydrophone to solve the problem mentioned in the background art of being unable to balance detection sensitivity and equipment protection.

[0006] To achieve the above objectives, this utility model provides a user-friendly hydrophone, comprising a hydrophone body, a movable ring, a connecting post, a mounting rod, a gear, a rack, a connecting rod, and a protective shell. A preamplifier is housed inside the hydrophone body. The movable ring is located at the bottom of the hydrophone body. The top of the connecting post is connected to the movable ring, and a movable groove is provided inside the connecting post. The mounting rod is perpendicular to the central axis of the connecting post and is positioned inside the movable groove. The gear is pivotally mounted on the mounting rod. The rack is perpendicular to the central axis of the connecting post and extends radially along the movable ring, and is positioned inside the movable groove, meshing with the gear. One end of the connecting rod is connected to the rack, and the other end extends radially beyond the movable ring. The protective shell has a two-cylindrical structure symmetrically positioned on the outside of the hydrophone body, and the inner walls of the two-cylindrical structures are connected to the other end of the connecting rod. Rotation of the gear drives the rack and connecting rod to extend and retract radially along the movable ring, thereby opening and closing the protective shell.

[0007] In a preferred embodiment, the easy-to-use hydrophone also includes a movable rod that extends along the central axis of the connecting post and is disposed inside the movable groove. The movable rod includes a spur tooth section for meshing with a gear, controlling the movable rod to perform reciprocating linear motion along the central axis of the connecting post. The spur tooth section can drive the gear to rotate forward or backward, and the forward or reverse rotation of the gear can control the opening and closing of the protective shell.

[0008] In a preferred embodiment, the hydrophone body and the connecting post are both cylindrical, and the movable ring is annular. The movable ring includes a sliding groove and a sliding hole. The sliding groove is disposed on the movable ring and located at the top of the connecting post. The sliding groove extends radially along the movable ring. The rack is embedded in the sliding groove and can slide back and forth within the sliding groove. The sliding hole is disposed on the movable ring and extends radially along the movable ring. The outer end of the connecting rod passes through the sliding hole and extends beyond the movable ring, connecting with the inner wall of the protective shell.

[0009] In a preferred embodiment, the protective shell is a double semi-cylindrical structure. When the two semi-cylindrical structures are closed, they form a complete cylindrical structure that wraps around the hydrophone. A seal is provided at the joint of the two semi-cylindrical structures. When the protective shell is closed, the seal can keep the hydrophone body isolated from the water.

[0010] In a preferred embodiment, the protective shell includes fixed semi-rings, which are semi-circular and symmetrically arranged on the bottom surface of the semi-cylindrical structure of the protective shell. When the protective shell is closed, the two fixed semi-rings close simultaneously to form a complete circular ring.

[0011] In a preferred embodiment, the easy-to-use hydrophone further includes a mounting post and an adjusting ring; the mounting post is connected to the bottom of the connecting post; the adjusting ring is connected to the bottom of the connecting post, and a groove is formed between the inner wall of the adjusting ring and the outer wall of the connecting post.

[0012] In a preferred embodiment, the easy-to-use hydrophone further includes an adjustment groove and a slider; the adjustment groove is disposed on the outer wall of the lower part of the connecting column; the slider is disposed on the inner wall of the adjustment ring; wherein the slider can be embedded in the adjustment groove and can move along the adjustment groove, thereby realizing that the movable ring moves upward along the axial direction of the connecting column.

[0013] In a preferred embodiment, the outer wall of the fixed half-ring has an incline. When the two fixed half-rings are closed, their outer walls form an inverted conical structure that is smaller at the bottom and larger at the top. When the fixed half-rings are closed, they can fit into the groove between the adjusting ring and the connecting post. As the adjusting ring moves upward, the adjusting ring presses the inverted conical structure of the fixed half-rings more tightly, thereby achieving a tight closure of the protective shell.

[0014] In a preferred embodiment, the easy-to-use hydrophone also includes a counterweight and a vibration isolation module; the counterweight is disposed in a placement groove inside the mounting post and is located at the bottom of the placement groove; the vibration isolation module is disposed at the bottom of the mounting post and is used to isolate vibration when the cable passes through.

[0015] In a preferred embodiment, the user-friendly hydrophone further includes a take-up and release winch for cable take-up and release. The winch has an axial cross-section in the shape of an I-beam and includes a rotating column, a hand handle, a storage slot, a cover, a limiting ring, a rotating base, and a rotating rod. The rotating column is pivotally mounted in the central shaft hole of the winch, allowing the winch to rotate in both directions around the rotating column. The hand handle is attached to one end of the rotating column and located on one side of the winch. The storage slot is located at the other end of the rotating column. The cover is placed on the... The storage slot has an opening to prevent internal contents from falling out; a limiting ring is located at the other end of the rotating column, and the diameter of the limiting ring is larger than the inner diameter of the central shaft hole of the winch. The limiting ring and the hand handle can restrict the axial movement of the rotating column within the central shaft hole; the rotating base is located at the edge of the winch's end face away from the hand handle; one end of the rotating rod is pivotally mounted on the rotating base, and the other end is for the operator to grip; the operator can retrieve and release cables by holding the hand handle with one hand and the rotating rod with the other hand and rotating the winch.

[0016] Compared with the prior art, the easy-to-use hydrophone of this invention has the following advantages:

[0017] 1. This easy-to-use hydrophone features convenient operation and high functional integration. The design enables rapid cable retraction and angle adjustment through a rotating handle and rotating rod. The rack and pinion mechanism drives the opening and closing of the protective shell and locks it through an adjusting ring. The winch integrates a counterweight storage function, realizing integrated operation of deployment, protection, and counterweight management, which greatly reduces the threshold for use.

[0018] 2. This easy-to-use hydrophone boasts excellent underwater stability and signal quality. The counterweight component effectively lowers the device's center of gravity, ensuring the hydrophone maintains a vertical posture in the water, and different counterweights allow for adjustment of the hydrophone's diving depth. The vibration isolation module absorbs mechanical vibrations from the cable and hull, and the dual design physically isolates interference, ensuring clear and accurate sound signals.

[0019] 3. This easy-to-use hydrophone has strong environmental adaptability and equipment reliability. The adjustable winch can adapt to different working scenarios. The lockable protective shell can meet both detection and protection needs. The locking mechanism can resist water flow impact. The integrated design avoids the loss of parts and comprehensively improves the durability and operational safety of the equipment in complex waters. Attached Figure Description

[0020] Figure 1This is a three-dimensional structural diagram of a hydrophone according to an embodiment of the present invention;

[0021] Figure 2 This is a three-dimensional structural schematic diagram of a hydrophone according to one embodiment of the present invention from another perspective.

[0022] Figure 3 This is a three-dimensional structural schematic diagram of a hydrophone according to another embodiment of the present invention.

[0023] Figure 4 yes Figure 5 A magnified schematic diagram of the structure at point A;

[0024] Figure 5 This is a three-dimensional cross-sectional view of a hydrophone according to an embodiment of the present invention;

[0025] Figure 6 This is a three-dimensional cross-sectional structural schematic diagram of a hydrophone according to an embodiment of the present invention from another perspective.

[0026] Figure 7 This is a three-dimensional structural diagram of the adjustment groove and slider according to an embodiment of the present utility model;

[0027] Figure 8 This is a three-dimensional structural diagram of the adjusting ring and the slot according to an embodiment of the present invention;

[0028] Figure 9 This is a three-dimensional cross-sectional view of a winch according to an embodiment of the present invention.

[0029] Explanation of key figure labels:

[0030] 1-Hydrophone body, 2-Connecting post, 3-Modible slot, 4-Adjusting slot, 5-Slider, 6-Adjusting ring, 7-Modible ring, 8-Rack, 9-Connecting rod, 10-Protective shell, 11-Fixed half ring, 12-Modible rod, 13-Counterweight assembly, 14-Mounting post, 15-Placement slot, 16-Counterweight block, 17-Vibration isolation module, 18-Cable, 19-Windlock, 20-Rotating post, 21-Handheld handle, 22-Storage slot, 23-Cap, 24-Limiting ring, 25-Rotating base, 26-Rotating rod, 27-Preamplifier, 28-Gear, 29-Mounting rod, 30-Slot, 31-Sensor. Detailed Implementation

[0031] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0032] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0033] like Figures 1 to 3 As shown, a user-friendly hydrophone according to a preferred embodiment of the present invention includes a hydrophone body 1, a movable ring 7, a connecting post 2, a mounting rod 29, a gear 28, a rack 8, a connecting rod 9, and a protective shell 10. A preamplifier 27 is disposed inside the hydrophone body 1. The movable ring 7 is disposed at the bottom of the hydrophone body 1. The top of the connecting post 2 is connected to the movable ring 7, and a movable groove 3 is disposed inside the connecting post 2. The mounting rod 29 is disposed perpendicular to the central axis of the connecting post 2 inside the movable groove 3. The gear 28 is pivotally mounted on the mounting rod 29. The rack 8 is perpendicular to the central axis of the connecting column 2 and extends radially along the movable ring 7 inside the movable groove 3, meshing with the gear 28. One end of the connecting rod 9 is connected to the rack 8, and the other end extends radially beyond the movable ring 7. The protective shell 10 is a two-cylindrical structure symmetrically arranged on the outside of the hydrophone body 1, with the inner walls of the two-cylindrical structures connected to the other end of the connecting rod 9. The rotation of the gear 28 can drive the rack 8 and the connecting rod 9 to extend and retract radially along the movable ring 7, thereby opening and closing the protective shell 10. The protective shell 10 is in a closed state underwater, and the fixed protective structure can take into account both detection sensitivity and equipment protection requirements. When the protective shell 10 is not underwater, it can be opened for inspection, maintenance, and other work. The movable protective mechanism can not only provide protection but also prevent it from being affected by water flow, effectively improving the performance of the hydrophone in complex marine environments.

[0034] In some embodiments, the sensor 31 is located at the top of the hydrophone body 1. The sensor 31 needs to be in contact with water to detect water signals. Therefore, the top of the protective shell 10 is generally provided with a window (not shown). When the protective shell 10 is closed, the window can expose the sensor 31. A sealing element is provided around the window. When the protective shell 10 is closed, the sealing element around the window can maintain the seal between the window of the protective shell 10 and the top of the hydrophone body 1, preventing water from entering the interior of the protective shell 10 from the window. The sealing element and sealing structure can be selected from existing technologies, and this utility model does not make specific limitations here.

[0035] like Figures 5 to 6As shown, in some embodiments, the user-friendly hydrophone also includes a movable rod 12, which extends along the central axis of the connecting post 2 and is disposed inside the movable groove 3. The movable rod 12 includes a spur tooth section (not shown) disposed at the upper part, which is used to mesh with the gear 28. The lower part of the movable rod 12 can extend from the operating hole (not shown) at the bottom of the connecting post, which can also serve as a guide hole for the movement of the movable rod 12. The movable rod 12 is controlled to reciprocate linearly along the central axis of the connecting post 2. The spur tooth section can drive the gear 28 to rotate forward or backward, and the forward or backward rotation of the gear 28 can control the opening and closing of the protective shell 10.

[0036] Please see Figure 5 , Figure 6 In some embodiments, preferably, the hydrophone body 1 and the connecting post 2 are both cylindrical, and the movable ring 7 is annular; however, this invention is not limited thereto. The movable ring 7 includes a sliding groove (not shown) and a sliding hole (not shown). The sliding groove and sliding hole can adopt existing technology, and this invention does not specifically limit them here. The sliding groove is provided on the movable ring 7 and located at the top of the connecting post 2. The sliding groove extends radially along the movable ring 7. The rack 8 is embedded in the sliding groove and can slide back and forth within the sliding groove. The sliding hole is provided on the movable ring 7 and extends radially along the movable ring 7. The outer end of the connecting rod 9 passes through the sliding hole and extends beyond the movable ring 7, connecting to the inner wall of the protective shell 10.

[0037] Please see Figure 5 , Figure 6 In some embodiments, the protective shell 10 is a two-semi-cylindrical structure. When the two semi-cylindrical structures are closed, they form a complete cylindrical structure that wraps around the hydrophone body 1. A seal (not shown) is provided at the joint of the two semi-cylindrical structures. When the protective shell 10 is closed, the seal can keep the hydrophone body 1 isolated from the water.

[0038] Please see Figure 5 , Figure 6 In some embodiments, the protective shell 10 includes a fixed half-ring 11, which is semi-circular and symmetrically arranged on the bottom surface of the semi-cylindrical structure of the protective shell 10. When the protective shell 10 is closed, the two fixed half-rings 11 close simultaneously to form a complete circular ring.

[0039] In some embodiments, the easy-to-use hydrophone also includes a mounting post 14 and an adjusting ring 6; the mounting post 14 is connected to the bottom of the connecting post 2; the adjusting ring 6 is connected to the bottom of the connecting post 2, and a groove 30 is formed between the inner wall of the adjusting ring 6 and the outer wall of the connecting post 2.

[0040] Please see Figure 5 , Figure 6In some embodiments, the movable ring 7 and the mounting post 14 can be connected to the outer circles of different diameters at the bottom of the connecting post 2 (not shown). For example, but not limited to, the outer circle diameter of the mounting post 14 is smaller than the connecting diameter of the adjusting ring 6. Preferably, the connection between the two is designed to be both non-interfering and easy to assemble and disassemble. The connection form between the mounting post 14 and the connecting post 2 can be selected from existing technologies, such as but not limited to threaded connection or snap-fit, etc. This utility model does not make specific limitations here. When the hydrophone body 1 is not underwater, the mounting post 14 can be removed, and the exposed part of the movable rod 12 can be operated to make the movable rod 12 reciprocate linearly along the central axis of the connecting post 2. The spur tooth section can drive the gear 28 to rotate forward or backward, and the forward or reverse rotation of the gear 28 can control the opening and closing of the protective shell 10.

[0041] like Figure 4 , Figures 7 to 8 As shown, in some embodiments, the easy-to-use hydrophone also includes an adjustment groove 4 and a slider 5; the adjustment groove 4 is disposed on the outer wall of the lower part of the connecting column 2; the slider 5 is integrally disposed on the inner wall of the adjustment ring 6; wherein the slider 5 can be embedded in the adjustment groove 4 and can move along the adjustment groove 4, thereby realizing that the movable ring 7 can move upward along the axial direction of the connecting column 2.

[0042] In some embodiments, the adjusting groove 4 can be a straight groove parallel to the central axis, or it can be a spiral groove that rises in a spiral pattern, and the slider 5 has a shape that matches the straight groove or the spiral groove. The form of the adjusting groove 4 and the slider 5 can both adopt existing technology, and this utility model does not make specific limitations here.

[0043] In some embodiments, the outer wall of the fixing half ring 11 has an incline (not shown). When the two fixing half rings 11 are closed, the outer wall of the fixing half ring 11 forms an inverted conical structure that is smaller at the bottom and larger at the top. When the fixing half ring 11 is closed, it can fit into the groove 30 between the adjusting ring 6 and the connecting post 2. As the adjusting ring 6 moves upward, the adjusting ring 6 presses the inverted conical structure of the fixing half ring 11 more tightly, thereby achieving a tight closure of the protective shell 10.

[0044] Please see Figure 6In some embodiments, the user-friendly hydrophone also includes a counterweight assembly 13 and a vibration isolation module 17. The counterweight assembly 13 includes multiple counterweight blocks 16, which are disposed in a placement groove 15 inside the mounting post 14 and located at the bottom of the placement groove 15. The vibration isolation module 17 is disposed at the bottom of the mounting post 14 and serves to isolate vibrations when the cable 18 passes through it. Multiple counterweight blocks 16 can be provided, and the counterweight blocks 16 can also be configured as a two-part closed structure with a central hole to allow the cable 18 to pass through. This user-friendly hydrophone exhibits excellent stability and signal quality underwater. The counterweight assembly 13 can effectively lower the center of gravity of the device, ensuring that the hydrophone maintains a vertical posture in the water. Moreover, multiple counterweight blocks 16 can be configured with different counterweight blocks 16 according to different diving depths. The connecting post 2, the movable rod 12, and the vibration isolation module 17 may have a central control structure (not shown) for the cable 18 to pass through. At the same time, the vibration isolation module 17 not only has a vibration isolation function but also a sealing function to prevent water from seeping into the vibration isolation module 17.

[0045] like Figure 9 As shown, see also Figures 1 to 3 In some embodiments, the user-friendly hydrophone also includes a winding winch 19 for winding and unwinding the cable 18. The winding winch 19 has an axial cross-section in the shape of an I-beam and includes a rotating column 20, a hand handle 21, a storage slot 22, a cover 23, a limiting ring 24, a rotating base 25, and a rotating rod 26. The rotating column 20 is pivotally mounted in the central shaft hole of the winding winch 19, allowing the winding winch 19 to rotate in both directions around the rotating column 20. The hand handle 21 is attached to one end of the rotating column 20 and located on one side of the winding winch 19. The storage slot 22 is located at the other end of the rotating column 20. The cover 23 covers the storage slot. The opening of the storage tank 22 is designed to prevent internal storage items (such as counterweight 16) from falling out; a limiting ring 24 is located at the other end of the rotating column 20, and the diameter of the limiting ring 24 is larger than the inner diameter of the central shaft hole of the winding winch 19. The limiting ring 24 and the hand handle 21 can restrict the axial movement of the rotating column 20 within the central shaft hole; the rotating base 25 is located at the edge of the winding winch 19 away from the hand handle 21; one end of the rotating rod 26 is pivotally mounted on the rotating base 25, and the other end is for the operator to grip; the operator can wind up or wind up the cable 18 by holding the hand handle 21 with one hand and the rotating rod 26 with the other hand and rotating the winding winch 19.

[0046] In summary, the user-friendly hydrophone of this invention has the following advantages:

[0047] 1. This easy-to-use hydrophone features convenient operation and high functional integration. The design enables rapid cable retraction and angle adjustment through a rotating handle and rotating rod. The rack and pinion mechanism drives the opening and closing of the protective shell and locks it through an adjusting ring. The winch integrates a counterweight storage function, realizing integrated operation of deployment, protection, and counterweight management, which greatly reduces the threshold for use.

[0048] 2. This easy-to-use hydrophone boasts excellent underwater stability and signal quality. The counterweight component effectively lowers the device's center of gravity, ensuring the hydrophone maintains a vertical posture in the water, and different counterweights allow for adjustment of the hydrophone's diving depth. The vibration isolation module absorbs mechanical vibrations from the cable and hull, and the dual design physically isolates interference, ensuring clear and accurate sound signals.

[0049] 3. This easy-to-use hydrophone has strong environmental adaptability and equipment reliability. The adjustable winch can adapt to different working scenarios. The lockable protective shell can meet both detection and protection needs. The locking mechanism can resist water flow impact. The integrated design avoids the loss of parts and comprehensively improves the durability and operational safety of the equipment in complex waters.

[0050] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A user-friendly hydrophone, characterized in that, include: The hydrophone body has a preamplifier installed inside; A movable ring is located at the bottom of the hydrophone body; A connecting column, the top of which is connected to the movable ring, and the connecting column is provided with a movable groove inside; The mounting rod is arranged perpendicularly to the central axis of the connecting column inside the movable groove; A gear, which is pivotally mounted on the mounting rod; A rack, which is perpendicular to the central axis of the connecting column and extends radially along the movable ring, is disposed inside the movable groove, and the rack meshes with the gear; A connecting rod, one end of which is connected to the rack, and the other end of which extends radially out of the movable ring; as well as The protective shell is a two-cylindrical structure symmetrically arranged on the outside of the hydrophone body, and the inner wall of the two-cylindrical structure is connected to the other end of the connecting rod. The rotation of the gear can drive the rack and the connecting rod to extend and retract radially along the movable ring, thereby realizing the opening and closing of the protective shell.

2. The easy-to-use hydrophone as described in claim 1, characterized in that, It also includes a movable rod, which extends along the central axis of the connecting column and is disposed inside the movable groove. The movable rod includes a spur tooth section for meshing with the gear and controlling the movable rod to perform reciprocating linear motion along the central axis of the connecting column. The spur tooth section can drive the gear to rotate forward or backward, and the forward or reverse rotation of the gear can control the opening and closing of the protective shell.

3. The easy-to-use hydrophone as described in claim 1, characterized in that, The hydrophone body and the connecting post are both cylindrical in shape, and the movable ring is annular in shape. The movable ring includes: A sliding groove is disposed on the movable ring and located at the top of the connecting post, the sliding groove extending radially along the movable ring, and the rack being embedded in the sliding groove and capable of reciprocating within the sliding groove; and A sliding hole is provided on the movable ring and extends radially along the movable ring. The outer end of the connecting rod extends through the sliding hole to the outside of the movable ring and connects to the inner wall of the protective shell.

4. The easy-to-use hydrophone as described in claim 1, characterized in that, The protective shell consists of two semi-cylindrical structures. When the two semi-cylindrical structures are closed, they form a complete cylindrical structure that wraps around the hydrophone. A sealing element is provided at the joint of the two semi-cylindrical structures. When the protective shell is closed, the sealing element can keep the hydrophone body isolated from the water.

5. The easy-to-use hydrophone as described in claim 4, characterized in that, The protective shell includes fixed semi-rings, which are semi-circular and symmetrically arranged on the bottom surface of the semi-cylindrical structure of the protective shell. When the protective shell is closed, the two fixed semi-rings close simultaneously to form a complete circular ring.

6. The easy-to-use hydrophone as described in claim 5, characterized in that, Also includes: Mounting post, which is connected to the bottom of the connecting post; as well as An adjusting ring is connected to the bottom of the connecting column, and a groove is formed between the inner wall of the adjusting ring and the outer wall of the connecting column.

7. The easy-to-use hydrophone as described in claim 6, characterized in that, Also includes: An adjustment groove is provided on the outer wall of the lower part of the connecting column; A slider is disposed on the inner wall of the adjusting ring; The slider can be embedded in the adjustment groove and can move along the adjustment groove, thereby enabling the movable ring to move upward along the axis of the connecting column.

8. The easy-to-use hydrophone as described in claim 6, characterized in that, The outer wall of the fixed half-ring has an incline. When the two fixed half-rings are closed, their outer walls form an inverted conical structure that is smaller at the bottom and larger at the top. When the fixed half-rings are closed, they can fit into the groove between the adjusting ring and the connecting post. As the adjusting ring moves upward, the adjusting ring presses the inverted conical structure of the fixed half-rings more tightly, thereby achieving a tight closure of the protective shell.

9. The easy-to-use hydrophone as described in claim 6, characterized in that, Also includes: A counterweight is disposed in a placement groove inside the mounting column and located at the bottom of the placement groove; as well as A vibration isolation module is disposed at the bottom of the mounting post, and the vibration isolation module is used to isolate the cable when it passes through.

10. The easy-to-use hydrophone as described in claim 6, characterized in that, It also includes a winding winch for winding up and unwinding cables, the winding winch having an I-shaped axial cross-section, and the winding winch comprising: A rotating column is pivotally mounted in the central shaft hole of the take-up and release winch, which can rotate in both directions about the rotating column as an axis. A hand grip is attached to one end of the rotating column and located on one side of the winding winch; A storage slot is located at the other end of the rotating column; A lid is provided over the opening of the storage compartment to prevent the contents from falling out. A limiting ring is provided at the other end of the rotating column. The diameter of the limiting ring is larger than the inner diameter of the central shaft hole of the winch. The limiting ring and the hand handle can restrict the axial movement of the rotating column within the central shaft hole. A rotating base is located at the edge of the end face of the winch on the side away from the hand grip; and A rotating rod, one end of which is pivotally mounted on the rotating base, and the other end of which is for the operator to hold; The operator holds the hand grip with one hand and the rotating rod with the other, and rotates the winch to reel in and out the cable.

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