Shipborne short baseline positioning array launching and recovering device with rotary drive base

Abstract

This invention patent is entitled "A Shipborne Short Baseline Positioning Array Deployment and Retrieval Device with a Rotary Drive Base," belonging to the field of underwater acoustic engineering technology. It addresses the shortcomings of existing positioning arrays, which rely on adjusting the working depth and angle, making automatic deployment and retrieval impossible and primarily dependent on manual operation, resulting in cumbersome and time-consuming processes. This device improves upon these limitations in shape and structure: a drive component moves a support shaft to automatically move the array frame into or out of the water; an air pump in the adjustment component injects air, using air pressure thrust to adjust the position of the receiving transducer; and a transmission system composed of a drive motor, synchronous pulley, and synchronous belt enables automated control. A stepper motor drives a brake plate to press and brake the synchronous belt, ensuring the array frame's stable position. This device can automatically deploy and retrieve the array frame, adapting to frequent testing needs, improving signal detection accuracy, and reducing signal attenuation and distortion.

Description

Technical Field

[0001] This invention relates to the field of underwater acoustic engineering technology, and in particular to a shipborne short baseline positioning array deployment and retrieval device with a rotary drive base. Background Technology

[0002] In shipborne acoustic positioning systems, short-baseline positioning arrays are commonly used for underwater target tracking. The closest existing technologies include using traditional piezoelectric transducers (such as cylindrical or planar transducers) as receiving hydrophones, which have narrow directivity and are susceptible to multipath effects and noise interference in complex shallow water environments. Signal preprocessing circuits often employ ordinary operational amplifiers, which have high noise levels and unstable gain, affecting signal detection accuracy. Signal transmission often uses single-layer shielded cables, which are susceptible to electromagnetic interference over long distances, leading to signal attenuation and distortion.

[0003] For example, an existing patent (such as CN115218093B) discloses a short baseline positioning array fixing device, but it can only adjust the working depth and angle of the positioning array, and cannot achieve automatic deployment and retrieval. It mainly relies on manual labor, which has the problems of cumbersome operation and long time consumption, and is difficult to adapt to the needs of frequent testing.

[0004] To address the aforementioned problems, this technical solution proposes a shipborne short baseline positioning array deployment and retrieval device with a rotary drive base. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of existing technical solutions where the working depth and angle of the positioning array are adjusted, making automatic deployment and retrieval impossible. These solutions mainly rely on manual labor, resulting in cumbersome operation and long time consumption. Therefore, this invention proposes a shipborne short baseline positioning array deployment and retrieval device with a rotating drive base.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A shipborne short baseline positioning array deployment and retraction device with a rotary drive base includes a base frame, a support seat fixedly mounted on one side of the top of the base frame, a support shaft rotatably connected through the support seat, a connecting seat fixedly sleeved on the support shaft, a connecting plate fixedly mounted on the top of the connecting seat, an adjustment component provided on the top of the connecting plate, an array frame connected to the adjustment component, and a receiving transducer mounted on the top of the array frame. The deployment and retraction device also includes:

[0008] A drive unit is installed on the other side of the top of the base frame. The drive unit is connected to the support shaft so that the base frame can be rotated and adjusted.

[0009] In one possible design, the adjusting component includes a support box fixedly installed on one side of the top of the connecting plate. Two limiting rods are symmetrically fixedly installed inside the support box, and the same movable plate is tightly slidably sleeved on the two limiting rods. The array frame is fixedly installed on the top of the movable plate, and the top of the array frame extends above the support box. A support ring located below the movable plate is fixedly installed inside the support box to support the movable plate. An air pump is fixedly installed on the bottom side of one side of the support box, and the air outlet of the air pump extends into the support box, with the air outlet located below the support ring.

[0010] In one possible design, an installation ring is fixedly installed at the top opening inside the support box, and two fixing plates are symmetrically fixedly installed on the inner side of the installation ring. The top end of the limiting rod is fixedly connected to the corresponding fixing plate, and a compression spring is sleeved on the limiting rod above the moving plate. The top and bottom ends of the compression spring are fixedly connected to the bottom of the fixing plate and the top of the moving plate, respectively.

[0011] In one possible design, an exhaust hood is fixedly installed on the bottom of the other side of the support box. The exhaust hood is connected to the support box. Multiple exhaust holes are evenly spaced on the inner wall of the exhaust hood. An electric push rod is fixedly installed on one side of the exhaust hood. The output shaft of the electric push rod extends into the exhaust hood and is fixedly installed with a sealing plate. The sealing plate is tightly slidably connected to the inner wall of the exhaust hood.

[0012] In one possible design, the drive component includes a transmission box fixedly mounted on the other side of the top of the base frame. A top cover is fixedly mounted on the top of the transmission box. A drive shaft is rotatably connected through the top cover. The two ends of the drive shaft extend to the two sides of the top cover, respectively. A power component is installed inside the transmission box and is connected to the drive shaft. Two transmission components are symmetrically mounted on the drive shaft, located on the two sides of the transmission box, respectively. One side of each transmission component is connected to a corresponding support shaft.

[0013] In one possible design, the power assembly includes a drive motor fixedly mounted on the inner wall of the bottom of the transmission box, with a gear component mounted on the output shaft of the drive motor and connected to the drive shaft.

[0014] In one possible design, the gear component includes a driving gear fixedly mounted on the output shaft of the drive motor and a driven gear fixedly mounted on the drive shaft, with the driving gear meshing with the driven gear.

[0015] In one possible design, the transmission assembly includes a first synchronous pulley and a second synchronous pulley. The first synchronous pulley is fixedly sleeved on the drive shaft, and the second synchronous pulley is fixedly sleeved on the support shaft. The first and second synchronous pulleys are driven by the same synchronous belt.

[0016] In one possible design, the transmission assembly further includes two protective covers, which are fixedly installed on both sides of the support base. One side of the protective cover is fixedly connected to one side of the upper cover. The first synchronous pulley, the second synchronous pulley, and the synchronous belt are located inside the corresponding protective covers to protect the first synchronous pulley, the second synchronous pulley, and the synchronous belt. The same braking component is connected to the two protective covers, and the braking component is used to press and limit the two synchronous belts respectively.

[0017] In one possible design, the braking component includes a stepper motor, which is fixedly mounted on a protective cover located on one side. A rotating shaft is fixedly mounted on the output shaft of the stepper motor. The rotating shaft passes through two protective covers and is rotatably connected to the inner walls of the two protective covers on opposite sides. Two brake plates are fixedly sleeved on the rotating shaft and are located inside the two protective covers respectively. The two ends of the brake plates are used to press against the top and bottom inner walls of the synchronous belt to brake the synchronous belt.

[0018] Beneficial effects:

[0019] 1. By driving the support shaft to rotate through the drive component, the connecting plate can be flipped, which can automatically move the array frame into or out of the water to meet the requirements of the receiving transducer position in different working scenarios. At the same time, the air pump in the adjustment component injects air into the support box, and uses the air pressure to drive the moving plate to move, which can adjust the position of the receiving transducer in the water, further enhancing the adaptability of the device to different working conditions.

[0020] 2. By utilizing a transmission system consisting of a drive motor, driving gear, driven gear, synchronous pulley, and synchronous belt, the rotation of the array frame is automatically controlled. Operators only need to activate the corresponding power components to complete the rotation adjustment of the array frame without manual operation, saving manpower and improving work efficiency.

[0021] 3. By starting the stepper motor to drive the rotating shaft to rotate, the brake plate presses and brakes the synchronous belt, thereby braking the support shaft. After the array frame is rotated and adjusted, it can be kept in a stable position without change, ensuring the positional accuracy of the receiving transducer in the water, which is conducive to improving the working effect of the positioning array.

[0022] This invention solves the problems of cumbersome operation, long time consumption, and susceptibility to signal interference in the prior art. It can automatically deploy and retrieve the array frame, adapt to the needs of frequent testing, adjust the position of the receiving transducer by means of air pump, and use a braking structure to ensure the stability of the array frame position. Moreover, the overall design helps to improve the signal detection accuracy and reduce signal attenuation and distortion. Attached Figure Description

[0023] Figure 1This is a first-view three-dimensional structural schematic diagram of a shipborne short baseline positioning array deployment and take-up device with a rotating drive base proposed in this invention.

[0024] Figure 2 This is a two-dimensional schematic diagram of the second-view structure of a shipborne short baseline positioning array deployment and take-up device with a rotating drive base proposed in this invention.

[0025] Figure 3 This is a three-dimensional schematic diagram of the connection structure of the drive motor, drive shaft, support shaft and connecting plate of a shipborne short baseline positioning array deployment and take-off device with a rotary drive base proposed in this invention.

[0026] Figure 4 This is a three-dimensional schematic diagram of the drive motor, two synchronous belts and support shaft connection structure of a shipborne short baseline positioning array deployment and take-off device with a rotary drive base proposed in this invention.

[0027] Figure 5 This is a three-dimensional cross-sectional schematic diagram of the support box structure of a shipborne short baseline positioning array deployment and take-off device with a rotary drive base proposed in this invention.

[0028] Figure 6 This is a front-view sectional view of a shipborne short baseline positioning array deployment and take-up device with a rotating drive base proposed in this invention.

[0029] Figure 7 This is a three-dimensional schematic diagram of the connection structure of two limiting rods, a moving plate, an array frame, and a mounting ring of a shipborne short baseline positioning array deployment and take-off device with a rotary drive base proposed in this invention.

[0030] In the diagram: 1. Base frame; 2. Support base; 3. Support shaft; 4. Connecting seat; 5. Connecting plate; 6. Transmission box; 7. Top cover; 8. Drive shaft; 9. First synchronous pulley; 10. Second synchronous pulley; 11. Synchronous belt; 12. Drive motor; 13. Driving gear; 14. Driven gear; 15. Protective cover; 16. Stepper motor; 17. Rotating shaft; 18. Brake plate; 19. Support box; 20. Limiting rod; 21. Mounting ring; 22. Fixing plate; 23. Moving plate; 24. Base frame; 25. Compression spring; 26. Support ring; 27. Air pump; 28. Exhaust hood; 29. ​​Electric push rod; 30. Sealing plate; 31. Exhaust hole; 32. Receiving transducer. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] In one embodiment: Refer to Figure 1-7A retraction and deployment device includes a base frame 1. A support base 2 is fixedly mounted on one side of the top of the base frame 1, and a support shaft 3 is rotatably connected through the support base 2. A connecting seat 4 is fixedly sleeved on the support shaft 3, and a connecting plate 5 is fixedly mounted on the top of the connecting seat 4. An adjustment component is provided on the top of the connecting plate 5, and a base array 24 is connected to the adjustment component. A receiving transducer 32 is mounted on the top of the base array 24. The retraction and deployment device also includes a drive component mounted on the other side of the top of the base frame 1. The drive component is connected to the support shaft 3 to enable rotational adjustment of the base array 24.

[0033] The adjusting components include a support box 19 fixedly installed on one side of the top of the connecting plate 5. Two limiting rods 20 are symmetrically fixedly installed inside the support box 19, and a common movable plate 23 is tightly slidably fitted onto the two limiting rods 20. An array frame 24 is fixedly installed on the top of the movable plate 23, with its top extending above the support box 19. A support ring 26, located below the movable plate 23, is fixedly installed inside the support box 19 to support the movable plate 23. An air pump 27 is fixedly installed on the bottom side of one side of the support box 19, with its outlet extending into the support box 19 and located below the support ring 26. After the support box 19 is rotated underwater by starting the drive unit, the receiving transducer 32 is positioned in the water. Air is injected into the support box 19 by starting the air pump 27. Under the action of air pressure thrust, the moving plate 23 can be moved inside the support box 19, thereby moving the array frame 24 to the outside of the support box 19, thus adjusting the position of the receiving transducer 32 in the water.

[0034] An installation ring 21 is fixedly installed at the top opening inside the support box 19. Two fixing plates 22 are symmetrically fixedly installed on the inner side of the installation ring 21. The top end of the limiting rod 20 is fixedly connected to the corresponding fixing plate 22. A compression spring 25 is sleeved on the limiting rod 20, located above the moving plate 23. The top and bottom ends of the compression spring 25 are fixedly connected to the bottom of the fixing plate 22 and the top of the moving plate 23, respectively. When the moving plate 23 moves towards the side closer to the installation ring 21, it can compress the compression spring 25, increasing the elastic potential energy of the compression spring 25. When the array frame 24 is stored in the support box 19, the elastic force of the compression spring 25 can be used to push the moving plate 23 to move in the opposite direction, so that the array frame 24 can be moved into the support box 19.

[0035] An exhaust hood 28 is fixedly installed on the bottom of the other side of the support box 19. The exhaust hood 28 is connected to the support box 19, and multiple exhaust holes 31 are evenly spaced on the inner wall of the exhaust hood 28. An electric push rod 29 is fixedly installed on one side of the exhaust hood 28. The output shaft of the electric push rod 29 extends into the exhaust hood 28 and a sealing plate 30 is fixedly installed thereon. The sealing plate 30 is tightly slidably connected to the inner wall of the exhaust hood 28. When it is necessary to retract the array frame 24 into the support box 19, the electric push rod 29 is activated to move the sealing plate 30 toward the side closer to the electric push rod 29, so that the multiple exhaust holes 31 remain connected to the support box 19. This allows the gas in the support box 19 to be discharged outward through the exhaust hood 28 and the multiple exhaust holes 31 when the moving plate 23 moves in the opposite direction, thus stabilizing the movement of the moving plate 23.

[0036] The drive unit includes a transmission box 6 fixedly mounted on the other side of the top of the base frame 1. A top cover 7 is fixedly mounted on the top of the transmission box 6, and a drive shaft 8 is rotatably connected through the top cover 7. The two ends of the drive shaft 8 extend to the two sides of the top cover 7, respectively. A power assembly is installed inside the transmission box 6 and is connected to the drive shaft 8. Two transmission assemblies are symmetrically mounted on the drive shaft 8, located on both sides of the transmission box 6. One side of each transmission assembly is connected to a corresponding support shaft 3. By activating the power assembly, the drive shaft 8 is rotated. Through the transmission of the two transmission assemblies, the support shaft 3 is rotated, thereby causing the connecting plate 5 to flip, automatically moving the array frame 24 into or out of the water.

[0037] The power assembly includes a drive motor 12 fixedly mounted on the inner wall of the bottom of the transmission housing 6, with a drive gear 13 fixedly mounted on the output shaft of the drive motor 12. A driven gear 14 located inside the upper cover 7 is fixedly sleeved on the drive shaft 8, and the drive gear 13 meshes with the driven gear 14. By starting the drive motor 12, the drive gear 13 is driven to rotate, and under the meshing transmission action with the driven gear 14, the drive shaft 8 can be driven to rotate, thereby providing driving force for the two transmission assemblies.

[0038] This application can be used in the field of underwater acoustic engineering technology, or in other fields applicable to this application.

[0039] In another embodiment: Reference Figure 1-4Based on the above embodiments, an improvement is made to a shipborne short baseline positioning array deployment and retraction device with a rotary drive base, which is applied to the field of underwater acoustic engineering technology. The structure of this embodiment is basically the same as the previous embodiments, except that the transmission assembly includes a first synchronous pulley 9 and a second synchronous pulley 10. The first synchronous pulley 9 is fixedly sleeved on the drive shaft 8, and the second synchronous pulley 10 is fixedly sleeved on the support shaft 3. The same synchronous belt 11 is driven and sleeved on the first synchronous pulley 9 and the second synchronous pulley 10. When the first synchronous pulley 9 rotates with the drive shaft 8, it can drive the support shaft 3 to rotate under the transmission action of the synchronous belt 11 and the second synchronous pulley 10, thereby driving the array frame 24 to rotate. The transmission assembly also includes two protective covers 15, which are respectively fixedly installed on both sides of the support base 2. One side of the protective cover 15 is fixedly connected to one side of the upper cover 7. The first synchronous pulley 9, the second synchronous pulley 10, and the synchronous belt 11 are located inside the corresponding protective covers 15, which are used to protect the first synchronous pulley 9, the second synchronous pulley 10, and the synchronous belt 11. A stepper motor 16 is fixedly installed on one side of a protective cover 15. A rotating shaft 17 is fixedly installed on the output shaft of the stepper motor 16. The rotating shaft 17 passes through both protective covers 15 and is rotatably connected to the inner walls of the two protective covers 15 on opposite sides. Two brake plates 18 are fixedly sleeved on the rotating shaft 17, located inside the two protective covers 15 respectively. The two ends of the brake plates 18 are used to press against the top and bottom inner walls of the synchronous belt 11 to brake the synchronous belt 11. After the base frame 24 is rotated and adjusted, the stepper motor 16 is started to drive the rotating shaft 17 to rotate, which rotates the two brake plates 18 in the vertical direction. This presses against the two synchronous belts 11 and brakes them. At this time, the support shaft 3 is also braked, keeping the base frame 24 in a stable position without change.

[0040] This short-baseline underwater acoustic positioning array includes a spherical piezoelectric component, a signal operational amplifier chip, a transducer drive circuit, a differential-to-single-ended circuit, an array transducer housing, an array frame, an array drive system, an array base, and array cables, all mounted within the array frame 24. The spherical piezoelectric component is made of piezoelectric ceramic, with a sphere size of SΦ30mm. Simulation analysis shows that the spherical transducer has a receiving sensitivity greater than -195dB and a fluctuation of no more than 6dB in the 10kHz-25kHz frequency band, meeting the module's requirements for underwater target positioning and tracking. The signal operational amplifier chip is made of semiconductor silicon substrate, with aluminum or copper metal interconnect layers and ceramic or epoxy resin packaging. It can be powered by dual power supplies of ±5V to ±15V, with an output drive current of 50mA. It can directly drive subsequent differential-to-single-ended circuits or ADCs. Input voltage noise is as low as 0.9 nV / √Hz (typical at 1kHz), and noise is only 50nV pp in the 0.1Hz–10Hz frequency band, making it suitable for noise-sensitive preamplifier links. Accuracy specifications include a maximum input offset voltage of ±80μV and an offset voltage drift of 1.0μV / °C, ensuring long-term operational stability. The transducer drive circuit uses a +2.7V–+24V DC power supply, with a quiescent current of 0.2mA–1.1mA and a dynamic response time of <1μs. It can directly drive transducers to achieve beamforming, providing a stable excitation signal for the transducers while meeting power, impedance matching, and environmental adaptability requirements. The differential-to-single-ended circuit uses a single 5V or ±5V power supply, is compatible with low-power embedded systems, supports 5mV—±2.5V differential input, achieves adjustable gain through a precision resistor network, has a nonlinearity error of <4ppm and an offset voltage of <1.5μV, and is suitable for high-precision acoustic measurements. The array transducer housing is made of titanium alloy and is cylindrical in shape. One end of the cylinder is a protruding, elongated, slender cylinder used to internally house the spherical piezoelectric component, signal operational amplifier chip, transducer drive circuit, and differential-to-single-ended circuit. The inner diameter of the other end of the cylinder is the same as the outer diameter of the array frame, and it is fixed by a snap-fit ​​connection and sealed with O-rings of nitrile rubber or fluororubber. The array frame is made of seamless 316L stainless steel tubing, with an inner diameter of 30-40cm, a wall thickness of 1-3cm, and a length of 8-10m. One end of the array frame tubing is fixedly connected to the transducer housing via a snap-fit, and the other end is connected to the outer arm of the array base drive shaft via an outer diameter thread. The outer wall of the array frame tube has staggered ladders for personnel to climb. The array drive system includes a drive motor and a reduction gear. The drive motor housing is made of cast iron, and the cover is made of aluminum alloy, both coated with anti-corrosion paint. The motor power is 300-500W, the output torque is 100-150N·m, the speed is 10-30rpm, and the waterproof rating is IP68. The reduction gear is a low-carbon steel gear set with a reduction ratio of 10:1 to 15:1, and the reduction gear is connected to the array base drive shaft.The array base is made of cast iron, with its bottom edge composed of I-beams forming a quadrilateral. It is 1-3m long, 0.5-1m wide, and the I-beam structure is 0.3-0.5m high. The upper part of the wide side of the I-beam base is the drive shaft hole base. The drive shaft diameter is 0.1-0.3m. One end of the drive shaft connects to the drive system's reduction gear, and the drive shaft is mounted on the rotating surface. The array signal conductor layer of the array cable is made of multi-strand stranded silver-plated soft copper wire with a diameter of 0.1-0.5mm². The differential signal dual-core structure has a cross-sectional area of ​​0.1-0.3mm² per core. The insulation layer is preferably made of polytetrafluoroethylene (PTFE) or fluorinated ethylene propylene copolymer (FEP), with a single-core insulation layer thickness of 0.1-0.3mm. The multi-layer shielding is double-layered. The braided shielding is made of tin-plated or silver-plated copper wire braid with a single wire diameter of 0.03-0.05mm. The foil shielding is made of aluminum foil or copper foil with a thickness of 0.02-0.05mm.

[0041] During array deployment, before the test begins, the array automatically rotates from the platform retraction mode to the platform-below deployment mode and is deployed into the water via the drive motor and reduction gear of the drive mechanism. The transducer receives the underwater target acoustic signal, which is amplified and filtered by the preprocessing components before being transmitted to the ship's signal processing system via shielded cable for short baseline positioning calculation. After the test is completed, or before the platform is returned to the factory for maintenance, the array rotates back from the platform-below deployment mode to the platform retraction mode via the drive system to complete the recovery from the water.

[0042] Working Principle: In use, the device is first installed on a survey vessel. When the array frame 24 needs to be moved into the water for positioning, the drive motor 12 in the drive unit is started. The drive motor 12 drives the drive gear 13 to rotate, which meshes with the driven gear 14, thus driving the drive shaft 8 to rotate. The first synchronous pulley 9 on the drive shaft 8 rotates accordingly, driving the second synchronous pulley 10 to rotate via the synchronous belt 11. The second synchronous pulley 10 drives the support shaft 3 to rotate, which in turn drives the connecting seat 4, connecting plate 5, adjusting components, and array frame 24 to rotate, thus rotating the array frame 24 underwater, placing the receiving transducer 32 in the water. When the receiving transducer 32 needs to be adjusted in the water, the air pump 27 is started. The air pump 27 injects air into the support box 19. Under the thrust of the air pressure, the moving plate 23 moves outward from the support box 19 on the limit rod 20. The moving plate 23 drives the array frame 24 to move, thereby adjusting the receiving transducer. When the device 32 is in the water, the compression spring 25 is compressed during the movement of the moving plate 23, increasing its elastic potential energy. When it is necessary to remove or store the array frame 24 from the water, the electric push rod 29 is activated. The electric push rod 29 drives the sealing plate 30 to move, so that the multiple exhaust holes 31 on the exhaust cover 28 are connected to the support box 19. At this time, the compression spring 25 uses its elastic force to push the moving plate 23 to move in the opposite direction, moving the array frame 24 into the support box 19. At the same time, the gas in the support box 19 is discharged outward through the exhaust cover 28 and the exhaust holes 31, ensuring the stable movement of the moving plate 23. After the array frame 24 has been rotated and adjusted, the stepper motor 16 is activated. The stepper motor 16 drives the rotating shaft 17 to rotate, and the rotating shaft 17 drives the brake plate 18 to rotate in the vertical direction. The two ends of the brake plate 18 press against the top inner wall and bottom inner wall of the synchronous belt 11, braking the synchronous belt 11, and then braking the support shaft 3, so that the array frame 24 remains in a stable position and no longer changes.

[0043] However, as is well known to those skilled in the art, the working principles and wiring methods of the drive motor 12, stepper motor 16, air pump 27, electric push rod 29 and receiving transducer 32 are conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0044] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A shipborne short baseline positioning array deployment and retraction device with a rotary drive base, comprising a base frame (1), a support base (2) fixedly mounted on one side of the top of the base frame (1), and a support shaft (3) rotatably connected through the support base (2), characterized in that, A connecting seat (4) is fixedly sleeved on the support shaft (3), and a connecting plate (5) is fixedly installed on the top of the connecting seat (4). An adjustment component is provided on the top of the connecting plate (5), and an array frame (24) is connected to the adjustment component. A receiving transducer (32) is installed on the top of the array frame (24). The take-up and take-down device also includes: A drive unit is installed on the other side of the top of the base frame (1). The drive unit is connected to the support shaft (3) so that the base frame (24) can be rotated and adjusted.

2. The shipborne short baseline positioning array deployment and retraction device with a rotary drive base according to claim 1, characterized in that, The adjustment component includes a support box (19) fixedly installed on one side of the top of the connecting plate (5). Two limiting rods (20) are symmetrically fixedly installed inside the support box (19). The same moving plate (23) is tightly slidably sleeved on the two limiting rods (20). The array frame (24) is fixedly installed on the top of the moving plate (23). The top of the array frame (24) extends to the top of the support box (19). A support ring (26) is fixedly installed inside the support box (19) and located below the moving plate (23) to support the moving plate (23). An air pump (27) is fixedly installed on the bottom side of one side of the support box (19). The air outlet of the air pump (27) extends into the support box (19). The air outlet of the air pump (27) is located below the support ring (26).

3. The shipborne short baseline positioning array deployment and retraction device with a rotary drive base according to claim 2, characterized in that, An installation ring (21) is fixedly installed at the top opening inside the support box (19). Two fixing plates (22) are symmetrically fixedly installed on the inner side of the installation ring (21). The top end of the limiting rod (20) is fixedly connected to the corresponding fixing plate (22). A compression spring (25) located above the moving plate (23) is sleeved on the limiting rod (20). The top and bottom ends of the compression spring (25) are fixedly connected to the bottom of the fixing plate (22) and the top of the moving plate (23), respectively.

4. A shipborne short baseline positioning array deployment and retraction device with a rotary drive base according to claim 2 or 3, characterized in that, An exhaust hood (28) is fixedly installed on the bottom of the other side of the support box (19). The exhaust hood (28) is connected to the support box (19). Multiple exhaust holes (31) are opened at equal intervals on the inner wall of the exhaust hood (28). An electric push rod (29) is fixedly installed on one side of the exhaust hood (28). The output shaft of the electric push rod (29) extends into the exhaust hood (28) and a sealing plate (30) is fixedly installed thereon. The sealing plate (30) is tightly slidably connected to the inner wall of the exhaust hood (28).

5. A shipborne short baseline positioning array deployment and retraction device with a rotary drive base according to claim 1, characterized in that, The drive component includes a transmission box (6) fixedly installed on the other side of the top of the base frame (1). A top cover (7) is fixedly installed on the top of the transmission box (6). A drive shaft (8) is rotatably connected through the top cover (7). The two ends of the drive shaft (8) extend to the two sides of the top cover (7). A power component is installed in the transmission box (6). The power component is connected to the drive shaft (8). Two transmission components are symmetrically installed on the drive shaft (8) on both sides of the transmission box (6). One side of the transmission component is connected to the corresponding support shaft (3).

6. A shipborne short baseline positioning array deployment and retraction device with a rotary drive base according to claim 5, characterized in that, The power assembly includes a drive motor (12) fixedly installed on the inner wall of the bottom of the transmission box (6). A gear component is installed on the output shaft of the drive motor (12), and the gear component is connected to the drive shaft (8).

7. A shipborne short baseline positioning array deployment and retraction device with a rotary drive base according to claim 6, characterized in that, The gear component includes a drive gear (13) fixedly mounted on the output shaft of the drive motor (12) and a driven gear (14) fixedly mounted on the drive shaft (8), with the drive gear (13) meshing with the driven gear (14).

8. A shipborne short baseline positioning array deployment and retrieval device with a rotary drive base according to claim 5, characterized in that, The transmission assembly includes a first synchronous pulley (9) and a second synchronous pulley (10). The first synchronous pulley (9) is fixedly sleeved on the drive shaft (8), and the second synchronous pulley (10) is fixedly sleeved on the support shaft (3). The first synchronous pulley (9) and the second synchronous pulley (10) are driven by the same synchronous belt (11).

9. A shipborne short baseline positioning array deployment and retraction device with a rotary drive base according to claim 7, characterized in that, The transmission assembly also includes two protective covers (15), which are fixedly installed on both sides of the support base (2). One side of the protective cover (15) is fixedly connected to one side of the upper cover (7). The first synchronous pulley (9), the second synchronous pulley (10) and the synchronous belt (11) are located inside the corresponding protective covers (15) to protect the first synchronous pulley (9), the second synchronous pulley (10) and the synchronous belt (11). The same braking component is connected to the two protective covers (15), and the braking component is used to press and limit the two synchronous belts (11).

10. A shipborne short baseline positioning array deployment and retrieval device with a rotary drive base according to claim 9, characterized in that, The braking component includes a stepper motor (16), which is fixedly mounted on a protective cover (15) located on one side. A rotating shaft (17) is fixedly mounted on the output shaft of the stepper motor (16). The rotating shaft (17) passes through the two protective covers (15) respectively and is rotatably connected to the inner walls of the two protective covers (15) on opposite sides. Two brake plates (18) are fixedly sleeved on the rotating shaft (17) and are located in the two protective covers (15) respectively. The two ends of the brake plates (18) are used to press the top inner wall and bottom inner wall of the synchronous belt (11) so as to brake the synchronous belt (11).

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