Vector hydrophone attitude self-recovery damping system

Abstract

The application provides a vector hydrophone posture self-recovery damping system, which comprises a vector hydrophone, a self-recovery suspension frame, a damping platform, an electric slip ring, a bearing and a cross beam; the vector hydrophone comprises a spherical body, and the peripheral side of the vector hydrophone is installed at the center of the self-recovery suspension frame through a plurality of elastic devices; two damping platforms are symmetrically arranged on the two sides of the self-recovery suspension frame and are rotationally matched with the self-recovery suspension frame in the axial direction through the electric slip ring and the bearing respectively; the two damping platforms are tightly connected through a plurality of cross beams, and the cross beams are arranged on the outer side of the self-recovery suspension frame; the vector hydrophone outwardly extends a cable connected with the electric slip ring. The self-recovery suspension frame adopts a structure design of off-center gravity self-balancing, the posture stability is maintained, and the measurement accuracy of the vector hydrophone is improved; the damping platform has a damping capacity in each direction in the three-dimensional space, has high bearing capacity, and reduces the measurement error caused by external vibration interference.

Description

Technical Field

[0001] This invention relates to the field of underwater acoustic detection, and more specifically, to a vector hydrophone attitude self-recovery vibration reduction system. Background Technology

[0002] Vector hydrophones can synchronously and point-to-point measure sound pressure and vibration velocity signals in a spatial sound field. They feature low operating frequency, high sensitivity, and excellent directivity, making them widely used in various underwater detection applications. When a vector hydrophone is installed in a towed sonar array, the array inevitably experiences torsion during operation, causing changes in the orientation of the vector hydrophone's channels and negatively impacting signal detection. Common solutions include embedding sensors to monitor attitude and correct for torsion, but this method requires sophisticated post-processing and is difficult to implement in real-time. Another approach is to design a self-recovering attitude structure for the hydrophone, allowing it to maintain stability under gravity during torsion. However, when the towed sonar array twists repeatedly in the same direction, the vector hydrophone's cable cores are not properly connected, leading to cable damage from repeated torsion. This significantly limits the application of common self-recovering attitude structures.

[0003] The inventors believe that current hydrophones, in order to achieve flexible suspension and reduce external noise interference, mainly use spring suspension. However, the selected springs have relatively low stiffness, resulting in insufficient damping to effectively suppress resonance peaks. At resonance, the transmission ratio is very high, and vibrations are transmitted at high frequencies, resulting in poor vibration reduction. This increases the difficulty of subsequent signal processing due to vibration interference in various directions in space.

[0004] Therefore, designing a vector hydrophone attitude self-recovery vibration reduction system that is not limited by the number of torsion cycles of a towed sonar array, has attitude self-correction, and multi-directional broadband vibration reduction functions has high practical value. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a vector hydrophone attitude self-recovery vibration reduction system.

[0006] According to the present invention, a vector hydrophone attitude self-recovering vibration reduction system includes: a vector hydrophone, a self-recovering suspension frame, vibration reduction platforms, an electric slip ring, a bearing, and a crossbeam; the vector hydrophone is spherical, and its periphery is mounted at the center of the self-recovering suspension frame via multiple elastic devices; two vibration reduction platforms are symmetrically arranged on both sides of the self-recovering suspension frame, and are respectively rotatably engaged with the self-recovering suspension frame axially via the electric slip ring and the bearing; the two vibration reduction platforms are fastened together by multiple crossbeams, and the crossbeams are arranged on the outer side of the self-recovering suspension frame; a cable extends outward from the vector hydrophone and is connected to the electric slip ring.

[0007] Preferably, the self-recovering suspension frame includes a left balance block, a right balance block, and two support rods, with the two ends of the support rods connected to the left balance block and the right balance block, respectively.

[0008] Preferably, the vector hydrophone has multiple hanging holes evenly distributed around its periphery, the elastic device is provided corresponding to the hanging holes, and the elastic device is symmetrically connected to the left balance block and the right balance block; the elastic device includes a hook and a spring.

[0009] Preferably, both the left and right balance blocks include an off-center structure, with a semi-circular lower part and a "T" shape upper part.

[0010] Preferably, the vibration damping platform includes an upper cover plate and a lower cover plate, and multiple pairs of transition columns are evenly distributed on the upper cover plate and the lower cover plate, with any pair of transition columns arranged orthogonally to each other, and vibration isolation columns connecting the corresponding transition columns on the upper cover plate and the lower cover plate.

[0011] Preferably, the lower cover plate is provided with limiting posts, and multiple limiting posts are spaced apart from multiple pairs of transition posts.

[0012] Preferably, the vibration isolation column has a rubber column in the middle and perforated metal rods at both ends.

[0013] Preferably, the slip ring includes a stator, a rotor, a stator core wire, and a rotor core wire. The rotor is embedded in the central hole of the left balance block, and the stator is connected to the inner circular stepped surface of the upper cover plate. The cable of the vector hydrophone is connected to the rotor core wire.

[0014] Preferably, the bearing includes a deep groove ball bearing, the inner side of which is connected to the outer circular surface of the step at the center of the right balance block, and the outer side of which is connected to the inner circular step surface of the upper cover plate.

[0015] Preferably, the crossbeam is made of metal, and the outer circumference of the lower cover plate is provided with multiple evenly distributed notches. The two ends of the crossbeam are respectively fastened to the two notches of the lower cover plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This invention employs a self-resetting suspension frame with an off-center self-balancing structural design, ensuring that the Y-channel of the vector hydrophone always faces upward under gravity, maintaining attitude stability and improving the measurement accuracy of the vector hydrophone. The vibration damping platform has vibration damping capabilities in all directions within three-dimensional space, strong load-bearing capacity, high positional accuracy, and no cumulative error, reducing measurement errors caused by external vibration interference. The vector hydrophone cable and the slip ring rotor output wires are welded one-to-one. While ensuring the wiring correspondence, the self-resetting suspension frame can rotate freely around the vibration damping platform without damaging the vector hydrophone output cable.

[0018] 2. This invention constructs a double-layer vibration reduction structure by using a vibration reduction platform and spring suspension, taking into account both the low-frequency characteristics of the spring and the damping characteristics of the rubber, thus expanding the bandwidth of the vibration reduction frequency band and improving the vibration reduction effect. The vector hydrophone adopts a flexible spring suspension, with the vibration reduction platform installed on both sides of the Z channel. The space occupied by the other channels is small, which allows it to accurately receive small vibration velocity signals from the outside world. Within the limited space of the towed sonar array, the size of the vector hydrophone can be designed to be as large as possible, which helps to improve its sensitivity.

[0019] 3. The present invention is made of metal, and the crossbeam and support rod are both made of metal, which has high rigidity. The crossbeam can ensure that the external support frame does not deform when subjected to a certain external bending stress, and the support rod can ensure the rigid support between the two balance blocks, so that the self-resetting suspension frame remains stable inside, thereby ensuring that the self-resetting suspension frame can still rotate freely and automatically restore its posture when subjected to external force interference. Attached Figure Description

[0020] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram illustrating the structure of the vector hydrophone attitude self-recovery vibration reduction system, which is the main feature of this invention.

[0022] Figure 2 This is a schematic diagram illustrating the vector hydrophone and its channels, which are the main features of this invention.

[0023] Figure 3 This is a schematic diagram illustrating the structure of the self-recovering suspension frame, which is the main feature of this invention.

[0024] Figure 4This is a schematic diagram illustrating the structure of the left balance block, which is the main feature of this invention.

[0025] Figure 5 This is a schematic diagram illustrating the structure of the right balance block, which is the main feature of this invention.

[0026] Figure 6 This is a schematic diagram illustrating the structure of the spring, which is the main feature of this invention.

[0027] Figure 7 This is a schematic diagram illustrating the structure of the spring, which is the main feature of this invention.

[0028] Figure 8 This is a schematic diagram illustrating the structure of the support rod, which is the main feature of this invention.

[0029] Figure 9 This is a schematic diagram illustrating the installation of the electric slip ring and the vibration damping platform, which are the main components of this invention.

[0030] Figure 10 This is a schematic diagram illustrating the installation of the bearing and vibration damping platform, which are the main components of this invention.

[0031] Figure 11 This is a schematic diagram illustrating the spatial position of the vibration isolation columns in the vibration reduction platform, which is the main feature of this invention.

[0032] Figure 12 This is a schematic diagram illustrating the structure of the upper cover plate, which is the main feature of this invention.

[0033] Figure 13 This is a schematic diagram illustrating the structure of the lower cover plate, which is the main feature of this invention.

[0034] Figure 14 This is a schematic diagram illustrating the structure of the vibration isolation column, which is the main feature of this invention.

[0035] Figure 15 This is a rear view of the vibration isolation column, which is the main feature of this invention.

[0036] Figure 16 This is a schematic diagram illustrating the structure of the adapter post, which is the main feature of this invention.

[0037] Figure 17 This is a schematic diagram illustrating the structure of the limiting post, which is the main feature of this invention.

[0038] Figure 18 This is a schematic diagram illustrating the structure of the electric slip ring, which is the main feature of this invention.

[0039] Figure 19 This is a side view that mainly illustrates the electric slip ring of the present invention;

[0040] Figure 20 This is a schematic diagram illustrating the structure of the bearing, which is the main feature of this invention.

[0041] Figure 21 This is a schematic diagram illustrating the structure of the crossbeam, which is the main feature of this invention.

[0042] As shown in the figure:

[0043] Vector hydrophone 1 Self-recovering suspension frame 2 Vibration damping platform 3

[0044] 4. Slip ring; 5. Bearing; 6. Crossbeam

[0045] Hook 21, Spring 22, Left counterweight 23

[0046] Right counterweight 34, support rod 25, upper cover plate 31

[0047] 32 Lower cover plate; 33 Vibration isolation column; 34 Adapter column

[0048] Limiting post 35, rotor core wire 41, stator core wire 42 Detailed Implementation

[0049] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0050] like Figure 1 As shown, a self-recovering vibration damping system for a vector hydrophone according to the present invention includes: a vector hydrophone 1, a self-recovering suspension frame 2, a vibration damping platform 3, an electric slip ring 4, a bearing 5, and a crossbeam 6; the vector hydrophone 1 is spherical, and its periphery is mounted at the center of the self-recovering suspension frame 2 by multiple elastic devices; two vibration damping platforms 3 are symmetrically arranged on both sides of the self-recovering suspension frame 2, and are respectively rotatably engaged with the self-recovering suspension frame 2 along the axial direction by the electric slip ring 4 and the bearing 5; the two vibration damping platforms 3 are fastened together by multiple crossbeams 6, and the crossbeams 6 are arranged on the outer side of the self-recovering suspension frame 2; a cable extends outward from the vector hydrophone 1 and is connected to the electric slip ring 4.

[0051] This application enables the vector hydrophone 1 to achieve self-recovery of its posture, protects the cable from damage when the vector hydrophone 1 is subjected to multiple torsions, and reduces noise interference caused by external mechanical vibration through a multi-layer omnidirectional composite vibration isolation structure design, thereby improving the environmental adaptability of the vector hydrophone.

[0052] like Figure 2As shown, the vector hydrophone 1 can be installed individually or in an array in a towed sonar array or other mounting platforms. The vector hydrophone 1 has three orthogonal channels: the Z-channel along the cable axis, and the X and Y channels in the remaining directions. During use, the Y-channel of the vector hydrophone 1 must face upwards. Failure to effectively control the attitude of the vector hydrophone 1 will significantly increase the difficulty of signal processing. In achieving attitude control, it is also necessary to avoid torsional damage to the vector hydrophone core 1 after repeated twisting. Furthermore, mechanical vibration interference from various external directions will also greatly increase the difficulty of signal processing.

[0053] like Figure 3-8 As shown, the self-recovering suspension frame 2 includes a left balance block 23, a right balance block 24, and two support rods 25. The two ends of the support rods 25 are respectively connected to the left balance block 23 and the right balance block 24. Multiple hanging holes are evenly distributed around the periphery of the vector hydrophone 1. Elastic devices are correspondingly arranged with the hanging holes, and elastic devices are symmetrically connected to the left balance block 23 and the right balance block 24. The elastic devices include hooks 21 and springs 22.

[0054] This application takes the eight evenly distributed hanging holes on the spherical surface of the vector hydrophone 1 as the hanging points for installation and suspension as an example. The self-resetting suspension frame 2 consists of eight hooks 21, eight springs 22, a left balance block 23, a right balance block 24, and two support rods 25. The left balance block 23, the right balance block 24, and the two support rods 25 are fixed to form a support frame. The two ends of the support rods 25 are respectively fitted and fastened to the left balance block 23 and the right balance block 24. The left balance block 23 and the right balance block 24 each have four evenly distributed screw holes on their respective planes for installing the eight hooks 21. The eight hanging holes on the vector hydrophone 1 are elastically connected to the corresponding hook 21 hanging holes on the left balance block 23 and the right balance block 24 in sequence through the eight springs 22, so that the vector hydrophone 1 is suspended at the center of the self-resetting suspension frame 2.

[0055] Spring 22 is a double-headed hook tension spring made of stainless steel. Its free length, elastic coefficient and other parameters are calculated and determined according to the usage conditions. After installation, it should be in a tensioned state. The tension of the eight springs 22 evenly distributed in space makes the vector hydrophone 1 suspended in the self-resetting suspension frame 2. The suspension method of the eight springs 22 allows the vector hydrophone 1 to move freely within the self-resetting suspension frame 2 with restrictions but without excessive deviation from the center, and without contact with the support rod 25 and the crossbeam 6.

[0056] Both the left and right balance blocks 23 and 24 include an off-center gravity structure. Their lower parts are semi-circular, and their upper parts are "T"-shaped. The smaller ends of the left and right balance blocks 23 and 24 are designed with an off-center gravity, resembling a "T" shape. Except for the space required for the mounting hook 21, all other materials are removed. The larger ends are semi-circular, with the center of gravity in the larger end. The larger ends of the two balance blocks are installed in the same direction, so that when the mounting platform or towed sonar array undergoes attitude torsion, the larger ends of the two balance blocks face downwards and the smaller ends face upwards under gravity. The self-resetting suspension frame 2 automatically maintains attitude stability, and the Y-channel of the vector hydrophone 1 remains upward. The left balance block 23 has a central hole at its center to mate with the outer diameter of the rotor of the slip ring 4. The right balance block 24 has a stepped outer surface at its center to mate with the inner surface of the bearing 5. Apart from this, the two balance blocks have the same structure. The two balance blocks are made of high-density copper alloy, which gives them a greater self-restoring torque when subjected to attitude torsion, allowing the Y-channel of the vector hydrophone 1 to recover to an upward state more quickly. The off-center self-balancing structural design ensures that the Y-channel of the vector hydrophone 1 always faces upward under gravity, maintaining attitude stability and improving the measurement accuracy of the vector hydrophone.

[0057] The support rod 25 is made of metal, which gives the self-recovering suspension frame 2 high structural rigidity, thus ensuring that it does not deform when subjected to torsion and external vibration impact.

[0058] Vector hydrophone 1 uses a flexible spring suspension, and vibration damping platform 3 is installed on both sides of the Z channel. The space occupied by the other channels is small, which allows it to accurately receive small vibration signals from the outside world. Within the limited space of the towed sonar array, the size of vector hydrophone 1 can be designed to be as large as possible, which helps to improve its sensitivity.

[0059] like Figure 9-17 As shown, the vibration damping platform 3 includes an upper cover plate 31 and a lower cover plate 32. Multiple pairs of transition columns 34 are evenly distributed on the upper cover plate 31 and the lower cover plate 32. Any pair of transition columns 34 are orthogonally arranged to each other. Vibration isolation columns 33 are connected between the corresponding transition columns 34 on the upper cover plate 31 and the lower cover plate 32.

[0060] This application takes a vibration damping platform 3, consisting of an upper cover plate 31, a lower cover plate 32, six vibration isolation columns 33, twelve transition columns 34, and three limiting columns 35, as an example. One vibration damping platform 3 is axially connected to the left balance block 23 via an electric slip ring 4, and the other vibration damping platform 3 is axially connected to the right balance block 24 via a bearing 5. Three pairs of evenly distributed transition columns 34 are installed on both the upper cover plate 31 and the lower cover plate 32. Six vibration isolation columns 33 are installed between the six pairs of transition columns 34. The holes at both ends of the vibration isolation columns 33 are fastened to the countersunk holes on the transition columns 34 with screws. Two transition columns 34 are respectively fastened to the upper cover plate 31 and the lower cover plate 32 with screws. Through the orthogonal design of the six vibration isolation columns 33 in three-dimensional space, external vibrations from any direction can be decomposed into the axial directions of different vibration isolation columns 33, giving the vibration damping platform 3 a three-dimensional vibration damping effect.

[0061] The vibration isolation column 33 has a rubber column in the middle and perforated metal rods at both ends. The rubber is vulcanized to form an integral metal-rubber composite flexible vibration reduction unit. When an external impact is transmitted to the vibration reduction platform 3, the component of the vibration along the axial direction of each vibration isolation column 33 is transmitted to the rubber, and the vibration reduction effect is achieved through the buffering effect of the rubber.

[0062] Rubber has significantly higher internal damping than metal, offering excellent high-frequency vibration isolation. It is also easy to mold and can bond firmly to metal. Vulcanization allows for the integral molding of rubber and metal, enabling the design and manufacture of vibration dampers of various shapes to improve high-frequency vibration reduction. Building upon spring suspension, this design fully utilizes the high damping properties of rubber, employing a flexible vibration isolation unit combining rubber and metal. A vector hydrophone vibration reduction structure is designed to enhance high-frequency vibration reduction. Leveraging the characteristics of a spatial six-degree-of-freedom parallel vibration reduction platform—independent in all directions, with high positional accuracy and no cumulative error—the platform provides buffering capabilities against impacts and vibrations in all directions, achieving omnidirectional vibration reduction.

[0063] Limiting posts 35 are provided on the lower cover plate 32, and multiple limiting posts 35 are spaced apart from multiple pairs of transition posts 34. The limiting posts 35 are installed on the lower cover plate 32 by screws. There are three evenly distributed on the lower cover plate 32 of a single vibration damping platform 3, which are staggered from the three pairs of transition posts 34. When the external impact is too large and the distance between the lower cover plate 32 and the upper cover plate 31 of the vibration damping platform 3 becomes too small, which may damage the vibration isolation column 33, the limiting posts 35 will limit the relative displacement between them to prevent the vibration isolation column 33 from further deforming and failing.

[0064] The vibration damping platform 3 and the spring suspension form a double-layer vibration damping structure, which takes into account the low-frequency characteristics of the spring and the damping characteristics of the rubber, expands the bandwidth of the vibration damping frequency band, and improves the vibration damping effect. Through the spatial structure design, the six vibration isolation columns 33 are orthogonal to each other, so that the vibration damping platform 3 has the vibration damping capacity in all directions in three-dimensional space, strong load-bearing capacity, high positional accuracy, no cumulative error, and reduces the measurement error caused by external vibration interference.

[0065] like Figure 18-19 As shown, the slip ring 4 includes a stator, a rotor, a stator core wire 42, and a rotor core wire 41. The rotor is embedded in the central hole of the left balance block 23, and the stator is connected to the inner circular stepped surface of the upper cover plate 31. The outer diameter of the rotor end of the slip ring 4 is the same as the inner diameter of the central hole of the left balance block 23, and it is embedded in the central hole of the left balance block 23. The outer diameter of the stator end is the same as the inner diameter of the central hole of the upper cover plate 31, and it is embedded in the inner circular stepped surface of the upper cover plate 31. The mounting screw holes on the stator part are fastened to the mounting grooves of the upper cover plate 31 by screws. The stator and rotor of the slip ring 4 can rotate freely, allowing the self-resetting suspension frame 2 to rotate freely around the vibration damping platform 3.

[0066] A cable is led out from the vector hydrophone 1, and the cable core is welded to the rotor core 41 of the slip ring 4. The rotor core 41 and the core of the vector hydrophone 1 are welded one by one in a corresponding relationship. Since the connection relationship between the rotor core 41 and the stator core 42 remains unchanged and remains conductive when the rotor of the slip ring 4 rotates relative to the stator, no matter how many times the self-resetting suspension frame 2 rotates around the vibration damping platform 3, the core of the vector hydrophone 1 will not be twisted or damaged due to the mutual rotation between the self-resetting suspension frame 2 and the vibration damping platform 3.

[0067] like Figure 20 As shown, bearing 5 includes a deep groove ball bearing. The inner side of bearing 5 is connected to the outer circular surface of the step at the center of the right balance block 24, and the outer side of bearing 5 is connected to the inner circular step surface of the upper cover plate 31. The inner diameter of bearing 5 is the same as the outer circular surface of the step of the right balance block 24, and it is embedded in the outer circular surface of the step of the right balance block 24. The outer diameter is the same as the inner circular step surface of the upper cover plate 31, and it is embedded in the inner circular step surface of the upper cover plate 31, so that the right balance block 24 can rotate freely around the vibration damping platform 3.

[0068] The left balance block 23 at the output end of the vector hydrophone 1 is connected to the upper cover plate 31 by an electric slip ring 4. The cable of the vector hydrophone 1 is welded one-to-one with the rotor output of the electric slip ring 4. Under the condition of ensuring the wiring correspondence, the self-resetting suspension frame 2 can rotate around the vibration damping platform 3 without restriction without damaging the output cable of the vector hydrophone 1. The right balance block 24 at the non-output end of the vector hydrophone 1 is connected to the upper cover plate 31 by a bearing, which can reduce the frictional resistance during rotation and improve the sensitivity of self-resetting.

[0069] like Figure 21 As shown, the crossbeam 6 is made of metal, and the outer circumference of the lower cover plate 32 has multiple evenly distributed notches. The two ends of the crossbeam 6 are respectively fastened to the notches of the two lower cover plates 32. The crossbeam 6 is made of metal, and the outer circumference of the lower cover plate 32 has three evenly distributed notches, with threaded holes in the middle of the notches. The two ends of the crossbeam 6 are inserted into the notches of the two lower cover plates 32, and the two ends of the crossbeam 6 are fixed to the threaded holes at the notches by countersunk screws, so that the lower cover plates 32 of the vibration damping platform 3 at both ends are tightly connected, forming a rigidly connected support frame. The self-recovering suspension frame 2 can rotate freely along the axis within the support frame composed of the vibration damping platform 3 and the crossbeam 6.

[0070] The lower cover plate 32 is fixed in conjunction with the PU tube of the towed sonar array or other mounting platform. When the towed sonar array or other mounting platform is twisted, the outer frame composed of the crossbeam 6 and the vibration damping platform 3 twists accordingly. The self-recovering suspension frame 2 keeps the Y channel of the vector hydrophone 1 facing upward under the action of gravity.

[0071] Both the crossbeam 6 and the support rod 25 are made of metal and have high rigidity. The crossbeam 6 can ensure that the external support frame does not deform when subjected to a certain external bending stress. The support rod 25 can ensure the rigid support between the two balance blocks, so that the self-resetting suspension frame 2 remains stable inside, thereby ensuring that the self-resetting suspension frame 2 can still rotate freely and automatically recover its posture when subjected to external force interference.

[0072] This application discloses a vector hydrophone attitude self-recovery vibration reduction system that is not limited by the number of torsion cycles of a towed sonar array, and possesses attitude self-correction and multi-directional broadband vibration reduction functions. The self-recovery suspension frame 2 suspends the vector hydrophone 1, allowing it to rotate freely along the axial direction. Through an asymmetrical center-of-gravity design of the balance block, the larger end of the balance block faces downwards and the smaller end faces upwards under gravity. The vector hydrophone 1 is suspended and connected to the self-balancing frame via an elastic device, with its Y-channel installed in the same direction as the smaller end, enabling the system to automatically maintain an upward-facing Y-channel attitude. The self-balancing frame is connected to the vibration reduction platform 2 via an electric slip ring 4. The outgoing cable of the vector hydrophone 1 is led out through the rotor outgoing cable of the electric slip ring 4. Because the stator and rotor outgoing cables of the electric slip ring 4 can rotate continuously without restriction, the vector hydrophone 1 can rotate unrestricted relative to the mounting platform during underwater torsion without causing the outgoing cable to twist or be damaged.

[0073] This application ensures that the vector hydrophone 1 maintains stable attitude even when the towed sonar array undergoes attitude torsion, protecting the core wire 1 from torsional damage and reducing noise interference from multi-directional mechanical vibrations in the external space. This improves the measurement accuracy of the vector hydrophone 1, minimizes interference with the acoustic environment, is not limited by the number of torsions, and can automatically recover its attitude, exhibiting multi-layer omnidirectional vibration damping. While satisfying the requirements of automatic attitude recovery and unlimited torsional cycles for the vector hydrophone 1, this application broadens the vibration damping bandwidth, achieves multi-layer omnidirectional vibration damping, and improves its measurement accuracy.

[0074] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0075] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A vector hydrophone attitude self-recovery vibration reduction system, characterized in that, include: Vector hydrophone (1), self-recovering suspension frame (2), vibration damping platform (3), electric slip ring (4), bearing (5) and crossbeam (6); The vector hydrophone (1) includes a sphere, and the periphery of the vector hydrophone (1) is mounted at the center of the self-recovering suspension frame (2) by a plurality of elastic devices; The two vibration damping platforms (3) are symmetrically arranged on both sides of the self-recovering suspension frame (2), and are respectively rotatably engaged with the self-recovering suspension frame (2) along the axial direction through the electric slip ring (4) and the bearing (5); The two vibration damping platforms (3) are fastened together by a plurality of crossbeams (6), and the crossbeams (6) are located on the outside of the self-recovering suspension frame (2); The vector hydrophone (1) has a cable extending outward and connected to the electric slip ring (4); The self-recovering suspension frame (2) includes a left balance block (23), a right balance block (24), and two support rods (25), with the two ends of the support rods (25) connected to the left balance block (23) and the right balance block (24), respectively. Both the left balance block (23) and the right balance block (24) include an off-center structure, with a semi-circle at the bottom and a "T" shape at the top. The vibration reduction platform (3) includes an upper cover plate (31) and a lower cover plate (32). Multiple pairs of transition columns (34) are evenly distributed on the upper cover plate (31) and the lower cover plate (32). Any pair of transition columns (34) are orthogonally arranged to each other. Vibration isolation columns (33) are connected between the corresponding transition columns (34) on the upper cover plate (31) and the lower cover plate (32).

2. The vector hydrophone attitude self-recovery vibration reduction system as described in claim 1, characterized in that, The vector hydrophone (1) has multiple hanging holes evenly distributed around its periphery. The elastic device is set in correspondence with the hanging holes, and the elastic device is symmetrically connected to the left balance block (23) and the right balance block (24). The elastic device includes a hook (21) and a spring (22).

3. The vector hydrophone attitude self-recovery vibration reduction system as described in claim 1, characterized in that, The lower cover plate (32) is provided with limit posts (35), and multiple limit posts (35) are spaced apart from multiple pairs of adapter posts (34).

4. The vector hydrophone attitude self-recovery vibration reduction system as described in claim 1, characterized in that, The vibration isolation column (33) has a rubber column in the middle and metal rods with holes at both ends.

5. The vector hydrophone attitude self-recovery vibration reduction system as described in claim 1, characterized in that, The electric slip ring (4) includes a stator, a rotor, a stator core wire (42) and a rotor core wire (41). The rotor is embedded in the center hole of the left balance block (23). The stator is connected to the inner circular stepped surface of the upper cover plate (31). The cable of the vector hydrophone (1) is connected to the rotor core wire (41).

6. The vector hydrophone attitude self-recovery vibration reduction system as described in claim 1, characterized in that, The bearing (5) includes a deep groove ball bearing. The inner side of the bearing (5) is connected to the outer circular surface of the step at the center of the right balance block (24), and the outer side of the bearing (5) is connected to the inner circular step surface of the upper cover plate (31).

7. The vector hydrophone attitude self-recovery vibration reduction system as described in claim 1, characterized in that, The crossbeam (6) is made of metal, and the outer circle of the lower cover plate (32) is provided with multiple evenly distributed notches. The two ends of the crossbeam (6) are respectively fastened to the two notches of the lower cover plate (32).

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