Reconfigurable acoustic array transducer device

Abstract

The application relates to the technical field of bearing fault acoustic detection equipment, and discloses a reconfigurable acoustic array conversion device which comprises a layered rack, a driving mechanism, a rotary telescopic mechanism and a connecting rod pushing assembly; a top surface of the layered rack is provided with a plurality of annular tracks, the annular tracks are communicated with a plurality of arc-shaped sub-tracks, and a plurality of microphone modules are slidably connected in the annular tracks and the arc-shaped sub-tracks; the rotary telescopic mechanism comprises a rotating disc and a plurality of automatic telescopic rod assemblies, the rotating disc is rotationally connected with the layered rack, the rotating disc is transmissionally connected with an output end of the driving mechanism through an electromagnetic clutch, and the plurality of automatic telescopic rod assemblies are installed on the rotating disc; and the connecting rod pushing assembly is transmissionally connected with the driving mechanism through a double-layer gear transmission assembly. The application can realize automatic switching of three array configurations of a rectangle, a ring and an Archimedes spiral, has no additional electromagnetic and airflow interference, can accurately collect weak fault acoustic signals in the running process of full-ceramic bearings, and improves the reliability of detection results.

Description

Technical Field

[0001] This invention relates to the field of acoustic detection equipment technology for bearing faults, and in particular to a reconfigurable acoustic array conversion device. Background Technology

[0002] During high-speed operation, all-ceramic bearings exhibit weak acoustic signals, low signal-to-noise ratios, and complex interference sources in the early stages of faults. Accurate acquisition of these weak acoustic signals is a crucial prerequisite for early bearing fault diagnosis. Currently, the acoustic array devices used for bearing acoustic testing have fixed structures and simple array configurations, mostly single rectangular or ring-shaped fixed arrangements. This makes it impossible to flexibly switch array forms according to acoustic field acquisition needs, making it difficult to adapt to signal acquisition requirements with different acoustic field distributions and fault characteristics, resulting in poor versatility.

[0003] Most existing adjustable acoustic array devices employ pneumatic or electromagnetic assisted adjustment structures. During adjustment, these structures are prone to generating additional interference such as airflow noise and electromagnetic clutter, severely contaminating the weak original acoustic signals of the all-ceramic bearings. This results in distorted acquisition signals, reduced fault identification accuracy, and an inability to meet the requirements for high-precision weak sound field detection. Furthermore, traditional adjustment mechanisms often employ a single transmission method, which can lead to motion interference, positioning deviations, and low reset accuracy during multi-position array switching. This makes it impossible to achieve automated and smooth switching between rectangular, circular, and helical configurations, and thus difficult to adapt to the diverse operating conditions required for refined bearing fault detection.

[0004] To address this, a reconfigurable acoustic array conversion device is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a reconfigurable acoustic array conversion device, which aims to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a reconfigurable acoustic array conversion device, comprising: A layered rack, the top surface of which is provided with several annular tracks, several arc-shaped sub-tracks are connected to the annular tracks, and several microphone modules are slidably connected in the annular tracks and the arc-shaped sub-tracks; A drive mechanism is mounted at the bottom of the layered rack; A rotary telescopic mechanism, comprising a turntable and several automatic telescopic rod assemblies, wherein the turntable is rotatably connected to the layered frame, and the turntable is drively connected to the output end of the drive mechanism via an electromagnetic clutch, and several of the automatic telescopic rod assemblies are mounted on the turntable; A linkage push assembly, wherein the linkage push assembly is connected to the drive mechanism via a double-layer gear transmission assembly; Both the automatic telescopic pole assembly and the connecting rod push assembly are in contact with the microphone module.

[0007] According to the reconfigurable acoustic array conversion device provided by the present invention, the driving mechanism includes a first motor and a second motor, both of which are mounted at the bottom of the layered rack; The output shaft of the first motor is connected to a central drive shaft via a coupling. The central drive shaft is mounted on the layered frame via rolling bearings. The central drive shaft is connected to the turntable via the electromagnetic clutch. The output shafts of the first motor and the second motor are both connected to the double-layer gear transmission assembly.

[0008] According to the reconfigurable acoustic array conversion device provided by the present invention, the dual-layer gear transmission assembly includes: The first driving gear is mounted on the output shaft of the first motor; The first driven gear set meshes with the first driving gear for transmission; The second drive gear is mounted on the output shaft of the second motor. The second driven gear set meshes with the second driving gear for transmission; The first driven gear set is located above the second driven gear set, and the first driven gear set and the second driven gear set are respectively connected to a plurality of the connecting rod push assemblies.

[0009] According to the reconfigurable acoustic array conversion device provided by the present invention, the first driven gear set includes two first driven gears, one of which meshes with the first driving gear, and the other of which is connected to the first driving gear via an intermediate gear. The second driven gear set includes two second driven gears, both of which mesh with the second driving gear for transmission; The first driven gear is located above the second driven gear, and the first driven gear and the second driven gear are respectively connected to a plurality of the connecting rod push assemblies.

[0010] According to the reconfigurable acoustic array conversion device provided by the present invention, the linkage pushing assembly includes a plurality of linkage groups, and a set of the linkage groups is respectively installed on the first driven gear and the second driven gear; The linkage assembly includes a first linkage and a second linkage. One end of the first linkage and one end of the second linkage are rotatably connected by a hinged connection component, and a first spring is installed between the first linkage and the second linkage. The first driven gear and the second driven gear are rotatably connected to the hinged connecting component, and the first connecting rod and the second connecting rod are in contact with the microphone module.

[0011] According to the reconfigurable acoustic array conversion device provided by the present invention, the turntable is provided with a plurality of arc-shaped grooves, and a plurality of the telescopic rod assemblies are respectively installed in the plurality of arc-shaped grooves.

[0012] According to the reconfigurable acoustic array conversion device provided by the present invention, the telescopic rod assembly includes a driving part and an arc-shaped rod, the arc-shaped rod being in contact with the microphone module; The arc-shaped rod is slidably connected in the arc-shaped groove, a slide rod is installed in the arc-shaped groove, the arc-shaped rod is slidably connected to the slide rod, and a second spring is provided on the slide rod sleeve; One end of the second spring is fixedly connected to the arc-shaped rod, and the other end is fixedly connected to the inner wall of the arc-shaped groove; The drive unit is installed in the arc-shaped slide groove and is used to drive the arc-shaped rod to slide along the arc-shaped slide groove.

[0013] According to the reconfigurable acoustic array conversion device provided by the present invention, the microphone module includes a microphone detection module and a drive rod. A plurality of the microphone detection modules are slidably connected within the annular track and the arc-shaped sub-track. The drive rod is fixedly installed at the bottom of the microphone detection module. The arc-shaped rod, the first connecting rod, and the second connecting rod are all in contact with the drive rod.

[0014] According to the reconfigurable acoustic array conversion device provided by the present invention, the layered rack includes a top plate and a bottom plate, the bottom plate and the top plate are fixedly connected by a plurality of support rods, and the top plate is located above the bottom plate; the first connecting rod and the second connecting rod are both in contact with the support rods; Several of the aforementioned annular tracks and several of the aforementioned arc-shaped sub-tracks are all formed through the top surface of the top plate, and the first motor and the second motor are both installed at the bottom of the base plate; the turntable is rotatably connected to the top plate, and the central drive shaft is installed on the top plate through rolling bearings.

[0015] According to the reconfigurable acoustic array conversion device provided by the present invention, the hinged connection component includes a bolt, a washer, and a nut; one end of the first connecting rod and one end of the second connecting rod are rotatably connected by the bolt, the first driven gear and the second driven gear are respectively rotatably connected to the bolt, and the washer and the nut are both mounted on the bolt.

[0016] The present invention discloses the following technical effects: This invention outputs power through a drive mechanism, which drives the connecting rod push assembly to move via a double-layer gear transmission assembly, thereby pushing the microphone module to extend radially along the annular track to form an annular radial array. After the annular array is formed, the drive mechanism drives the turntable to rotate via an electromagnetic clutch, and extends through several automatic telescopic rod assemblies to push the microphone module to rotate synchronously and feed radially to the arc-shaped sub-track to form an Archimedean spiral array. After the test, the drive mechanism drives the microphone module to retract and reset to the initial rectangular array position.

[0017] This invention achieves power distribution of the drive mechanism through an electromagnetic clutch, thereby enabling the execution of the rotary telescopic mechanism and the linkage pushing assembly. It can automatically switch between three array configurations: rectangular, circular radial, and Archimedean spiral. It uses a double-layer gear transmission assembly for transmission, ensuring interference-free movement, high positioning accuracy, and no additional electromagnetic or airflow interference. It can be adapted to the acquisition of weak sound field signals from all-ceramic bearings, solving the defects of traditional equipment with single configuration and inability to switch.

[0018] This invention utilizes a purely mechanical positioning architecture, eliminating additional acoustic interference. The array positioning and locking are entirely achieved through mechanical structures, without the need for pneumatic or electromagnetic auxiliary components. This avoids introducing airflow noise or electromagnetic clutter, enabling the accurate acquisition of weak fault acoustic signals during the operation of all-ceramic bearings, resulting in more reliable detection results. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an isometric view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0021] The components include: 1. Circular track; 2. Arc-shaped sub-track; 3. Microphone module; 4. Turntable; 5. First motor; 6. Second motor; 7. First driving gear; 8. First driven gear set; 9. Second driving gear; 10. Second driven gear set; 11. First connecting rod; 12. Second connecting rod; 13. Hinged connection component; 14. First spring; 15. Arc-shaped slide; 16. Arc-shaped rod; 17. Second spring; 18. Top plate; 19. Bottom plate; 20. Support rod. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Reference Figures 1-2 The present invention provides a reconfigurable acoustic array conversion device, comprising: The layered rack has several annular tracks 1 on its top surface, and several arc-shaped sub-tracks 2 connected to the annular tracks 1. Several microphone modules 3 are slidably connected inside the annular tracks 1 and the arc-shaped sub-tracks 2. The drive mechanism is installed at the bottom of the layered rack; The rotary telescopic mechanism includes a turntable 4 and several automatic telescopic rod assemblies. The turntable 4 is rotatably connected to the layered frame. The turntable 4 is connected to the output end of the drive mechanism via an electromagnetic clutch. Several automatic telescopic rod assemblies are mounted on the turntable 4. The linkage push assembly is connected to the drive mechanism via a double-layer gear transmission assembly. Both the automatic telescopic pole assembly and the linkage push assembly are in contact with the microphone module 3.

[0025] With this configuration, the present invention outputs power through the drive mechanism, which drives the connecting rod push assembly to move via the double-layer gear transmission assembly, thereby pushing the microphone module 3 to extend radially along the annular track 1 to form an annular radial array. After the annular array is formed, the drive mechanism drives the turntable 4 to rotate via the electromagnetic clutch, and extends through several automatic telescopic rod assemblies to push the microphone module 3 to rotate synchronously and feed radially to the arc-shaped sub-track 2 to form an Archimedean spiral array. After the test, the microphone module 3 is retracted and reset to the initial rectangular array position by the drive mechanism.

[0026] This invention achieves power distribution of the drive mechanism through an electromagnetic clutch, thereby enabling the execution of the rotary telescopic mechanism and the linkage pushing assembly. It can automatically switch between three array configurations: rectangular, circular radial, and Archimedean spiral. It uses a double-layer gear transmission assembly for transmission, ensuring interference-free movement, high positioning accuracy, and no additional electromagnetic or airflow interference. It can be adapted to the acquisition of weak sound field signals from all-ceramic bearings, solving the defects of traditional equipment with single configuration and inability to switch.

[0027] This invention utilizes a purely mechanical positioning architecture, eliminating additional acoustic interference. The array positioning and locking are entirely achieved through mechanical structures, without the need for pneumatic or electromagnetic auxiliary components. This avoids introducing airflow noise or electromagnetic clutter, enabling the accurate acquisition of weak fault acoustic signals during the operation of all-ceramic bearings, resulting in more reliable detection results.

[0028] The scheme is further optimized, and the drive mechanism includes a first motor 5 and a second motor 6, both of which are installed at the bottom of the layered frame; The output shaft of the first motor 5 is connected to the central drive shaft via a coupling. The central drive shaft is mounted on the layered frame via rolling bearings. The central drive shaft is connected to the turntable 4 via an electromagnetic clutch. The output shafts of the first motor 5 and the second motor 6 are both connected to the double-layer gear transmission assembly.

[0029] The output shaft of the first motor 5 is connected to the central drive shaft via a coupling. The central drive shaft is mounted on the layered frame with rolling bearings, ensuring stable rotation and reducing transmission friction. The central drive shaft establishes a controllable transmission relationship with the turntable 4 via an electromagnetic clutch, enabling on / off control of the turntable's rotational power. Simultaneously, the output shafts of the first motor 5 and the second motor 6 are respectively connected to a double-layer gear transmission assembly, forming two independent power output channels. This dual-motor division of labor drive mode allows the rotational forming power and the connecting rod pushing power to be independent and non-interfering.

[0030] Further optimization of the solution includes the following double-layer gear transmission assembly: The first drive gear 7 is mounted on the output shaft of the first motor 5; The first driven gear set 8 meshes with the first driving gear 7 for transmission; The second drive gear 9 is mounted on the output shaft of the second motor 6; The second driven gear set 10 meshes with the second driving gear 9 for transmission; The first driven gear set 8 is located above the second driven gear set 10, and the first driven gear set 8 and the second driven gear set 10 are respectively connected to several linkage push assemblies.

[0031] The first driving gear 7 rotates synchronously with the first motor 5, driving the upper first driven gear set 8 to mesh and operate; the second driving gear 9 rotates synchronously with the second motor 6, driving the lower second driven gear set 10 to mesh and operate. The upper and lower gear sets are independently driven and arranged in layers without spatial interference, each corresponding to drive different groups of linkage push components, realizing time-division and synchronous independent action of the upper and lower linkage mechanisms. The double-layer gear layered transmission structure has a precise transmission ratio and smooth operation, which can accurately convert the rotational motion of the motor into regular mechanical motion of the linkage push components, ensuring that the push stroke of each microphone module 3 is consistent and the displacement is synchronized, effectively improving the uniformity and repeatability of array formation.

[0032] In a further optimized design, the first driven gear set 8 includes two first driven gears, one of which meshes with the first driving gear 7 for transmission, and the other driven gear is connected to the first driving gear 7 for transmission through an intermediate gear. The second driven gear set 10 includes two second driven gears, both of which mesh with the second driving gear 9 for transmission. The first driven gear is located above the second driven gear, and the first and second driven gears are respectively connected to several linkage push assemblies.

[0033] It can achieve power reversal and torque balanced distribution, adapting to the symmetrical pushing requirements of the upper linkage group; the second driven gear group 10 adopts a coaxial synchronous transmission structure in which two gears directly mesh with the second driving gear 9, ensuring that the two lower linkage groups move synchronously, in the same direction, and with the same stroke. This composite meshing method can adapt to different transmission logics according to the motion trajectory of the upper and lower linkages, which can not only meet the motion requirements of the symmetrical expansion of the array, but also ensure the consistency of the actions of multiple linkages, eliminate unilateral force deviation, and further improve the displacement synchronization of the multi-position microphone module 3.

[0034] The scheme is further optimized so that the linkage push assembly includes several linkage groups, and a linkage group is installed on the first driven gear and the second driven gear respectively; The linkage assembly includes a first link 11 and a second link 12. One end of the first link 11 and one end of the second link 12 are rotatably connected by a hinged connection component 13, and a first spring 14 is installed between the first link 11 and the second link 12. The first driven gear and the second driven gear are respectively rotatably connected to the hinged connecting component 13, and the first connecting rod 11 and the second connecting rod 12 are both in contact with the microphone module 3.

[0035] The ends of the first connecting rod 11 and the second connecting rod 12 are rotatably hinged by a hinged connecting component 13, enabling adaptive oscillation. The hinged connecting component 13 is rotatably mounted on the corresponding driven gear, and the extension and retraction of the connecting rods are achieved as the gear revolves. The first spring 14 spans between the two connecting rods, providing elastic preload under normal conditions, ensuring that the connecting rods always maintain a tight posture and have adaptive buffering capability. During operation, the driven gear rotates, causing the connecting rod assembly to open and push. The ends of the first connecting rod 11 and the second connecting rod 12 simultaneously press against the bottom drive rod of the microphone module 3, smoothly pushing the microphone module 3 to slide radially along the track. During the movement, the first spring 14 can adaptively compensate for the gap between the connecting rods and buffer mechanical impact, ensuring a flexible and smooth pushing process without jamming. During reset, it can assist the connecting rods in automatically retracting back to their original position, improving the array reconstruction and reset accuracy.

[0036] To further optimize the design, several arc-shaped grooves 15 are provided on the turntable 4, and several telescopic rod assemblies are installed in the arc-shaped grooves 15.

[0037] The arc-shaped groove 15 provides a defined arc-shaped motion trajectory for the telescopic rod assembly, allowing it to slide only along the path defined by the groove. This effectively constrains the degree of freedom of movement and prevents the telescopic rod from deviating, swaying, or misaligning. During the rotation of the turntable 4, the arc-shaped groove 15 revolves synchronously with the turntable, driving the internal telescopic rod assembly to revolve as a whole. Simultaneously, in conjunction with the telescopic rod's own extension and retraction, it achieves a composite motion of revolution and radial feed, precisely matching the sliding trajectory of the microphone module 3 along the arc-shaped sub-track 2. This ensures that the spiral array forming trajectory is regular and the arrangement is uniform, significantly improving the forming accuracy of the Archimedes spiral array.

[0038] The design was further optimized, and the telescopic pole assembly includes a drive unit and an arc-shaped rod 16, which contacts the microphone module 3. The arc-shaped rod 16 is slidably connected in the arc-shaped slide groove 15. A slide rod is installed in the arc-shaped slide groove 15. The arc-shaped rod 16 is slidably connected to the slide rod. A second spring 17 is provided on the outer sleeve of the slide rod. One end of the second spring 17 is fixedly connected to the arc-shaped rod 16, and the other end is fixedly connected to the inner wall of the arc-shaped groove 15; The drive unit is installed in the arc-shaped slide groove 15 and is used to drive the arc-shaped rod 16 to slide along the arc-shaped slide groove 15.

[0039] During operation, the drive unit outputs power to push the arc-shaped rod 16 to slide and extend along the slide bar, causing the end of the arc-shaped rod 16 to press against the drive rod of the microphone module 3. This, combined with the rotation of the turntable 4, achieves the arc-shaped feeding and sliding of the microphone module 3, completing the spiral array arrangement. During the extension process, the second spring 17 is compressed and stores elastic potential energy. After the array is formed, the drive unit releases force, the second spring 17 releases its elastic potential energy, and pulls the arc-shaped rod 16 to automatically slide and reset, releasing the pressure and limiting effect on the microphone module 3. This structure features precise sliding guidance, smooth buffering, and automatic reset, enabling automated spiral array forming and reset actions with strong mechanical stability.

[0040] The microphone module 3 is further optimized to include a microphone detection module and a drive rod. Several microphone detection modules are slidably connected in the annular track 1 and the arc-shaped sub-track 2. The drive rod is fixedly installed at the bottom of the microphone detection module. The arc-shaped rod 16, the first connecting rod 11 and the second connecting rod 12 are all in contact with the drive rod.

[0041] The first link 11 and the second link 12 of the linkage push assembly, as well as the arc-shaped rod 16 of the telescopic rod assembly, all directly contact the drive rod to transmit thrust, without directly contacting the microphone detection body. This structure concentrates the mechanical thrust onto the drive rod, achieving stable force transmission and preventing mechanical compression and vibration from directly affecting the detection module. It effectively isolates mechanical vibration interference, further ensuring the accuracy of weak sound field acquisition. At the same time, the unified force-bearing structure ensures consistent displacement response of all microphone modules 3, resulting in higher array formation regularity.

[0042] The scheme is further optimized. The layered frame includes a top plate 18 and a bottom plate 19. The bottom plate 19 is fixed to the top plate 18 by a number of support rods 20, and the top plate 18 is located above the bottom plate 19. The first connecting rod 11 and the second connecting rod 12 are both in contact with the support rods 20. Several circular tracks 1 and several arc-shaped sub-tracks 2 are all opened through the top surface of the top plate 18, and the first motor 5 and the second motor 6 are both installed at the bottom of the base plate 19; the turntable 4 is rotatably connected to the top plate 18, and the central drive shaft is installed on the top plate 18 through rolling bearings.

[0043] The top plate 18 has a ring track 1 and an arc-shaped sub-track 2, which serve as the working surface for the sliding formation of the microphone module 3. The turntable 4 is rotatably mounted on the top plate 18, and the central drive shaft is supported on the top plate 18 by rolling bearings to ensure precise and stable reconstruction movement of the upper array. The first motor 5 and the second motor 6 are both arranged at the bottom of the base plate 19, realizing the sinking arrangement of the power mechanism, lowering the center of gravity of the whole machine, and improving the stability of the equipment operation. At the same time, the support rod 20 can provide limit support for the swinging first link 11 and second link 12, limiting the maximum swing angle of the link, avoiding overtravel swing and disordered movement of the link, and ensuring the safe and reliable operation of the entire transmission and pushing mechanism.

[0044] The scheme is further optimized. The hinged connection component 13 includes a bolt, a washer, and a nut. One end of the first connecting rod 11 and one end of the second connecting rod 12 are rotatably connected by a bolt. The first driven gear and the second driven gear are respectively rotatably connected to the bolt. The washer and the nut are both installed on the bolt.

[0045] The ends of the first connecting rod 11 and the second connecting rod 12 are hinged by bolts, and the entire hinged structure is rotatably assembled on the end face of the driven gear. The bolts serve as the rotation center axis, ensuring that the two connecting rods can rotate flexibly relative to each other; shims are used to fill the fit clearance, reduce rotational friction, and prevent metal jamming, wear, and abnormal noise; nuts provide locking and limiting, preventing the hinged structure from loosening or shifting. This standard combined hinged structure features high fitting precision, good wear resistance, and convenient disassembly and maintenance. It can ensure that the connecting rod assembly swings flexibly and with uniform clearance for a long time, continuously guaranteeing accurate and reliable pushing action, and effectively improving the stability and service life of the equipment during long-term continuous operation.

[0046] The scheme has been further optimized. The first motor 5 and the second motor 6 use 42BYG250-90 stepper motors, paired with DM542 stepper drivers. The motor output shaft and drive shaft are connected by ML3 type plum blossom-shaped flexible couplings, which can compensate for coaxiality errors, buffer transmission vibrations, and eliminate mechanical vibration interference with sound field acquisition. The independent drive logic of the dual motors, combined with the time-sharing on / off control of the electromagnetic clutch, effectively solves the problems of mixed working conditions and asynchronous movement in traditional single-motor drives. It is suitable for the rapid switching requirements of three types of arrays: rectangular, circular radial, and Archimedean spiral, with no jamming or interference throughout the entire movement.

[0047] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "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, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0048] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A reconfigurable acoustic array conversion device, characterized in that, include: A layered rack, the top surface of which is provided with several annular tracks (1), several arc-shaped sub-tracks (2) are connected to the annular tracks (1), and several microphone modules (3) are slidably connected in the annular tracks (1) and the arc-shaped sub-tracks (2). A drive mechanism is mounted at the bottom of the layered rack; A rotary telescopic mechanism, comprising a turntable (4) and several automatic telescopic rod assemblies, wherein the turntable (4) is rotatably connected to the layered frame, and the turntable (4) is connected to the output end of the drive mechanism via an electromagnetic clutch, and several of the automatic telescopic rod assemblies are mounted on the turntable (4); A linkage push assembly, wherein the linkage push assembly is connected to the drive mechanism via a double-layer gear transmission assembly; The automatic telescopic rod assembly and the connecting rod push assembly are both in contact with the microphone module (3).

2. The reconfigurable acoustic array conversion device according to claim 1, characterized in that: The drive mechanism includes a first motor (5) and a second motor (6), both of which are mounted on the bottom of the layered frame; The output shaft of the first motor (5) is connected to a central drive shaft via a coupling. The central drive shaft is mounted on the layered frame via rolling bearings. The central drive shaft is connected to the turntable (4) via the electromagnetic clutch. The output shafts of the first motor (5) and the second motor (6) are both connected to the double-layer gear transmission assembly.

3. The reconfigurable acoustic array conversion device according to claim 2, characterized in that: The double-layer gear transmission assembly includes: The first drive gear (7) is mounted on the output shaft of the first motor (5); The first driven gear set (8) meshes with the first driving gear (7) for transmission; The second drive gear (9) is mounted on the output shaft of the second motor (6); The second driven gear set (10) meshes with the second driving gear (9) for transmission; The first driven gear set (8) is located above the second driven gear set (10), and the first driven gear set (8) and the second driven gear set (10) are respectively connected to a plurality of the connecting rod push assemblies.

4. The reconfigurable acoustic array conversion device according to claim 3, characterized in that: The first driven gear set (8) includes two first driven gears, one of which meshes with the first driving gear (7) for transmission, and the other first driven gear is connected to the first driving gear (7) for transmission through an intermediate gear; The second driven gear set (10) includes two second driven gears, both of which mesh with the second driving gear (9); The first driven gear is located above the second driven gear, and the first driven gear and the second driven gear are respectively connected to a plurality of the connecting rod push assemblies.

5. The reconfigurable acoustic array conversion device according to claim 4, characterized in that: The linkage pushing assembly includes several linkage groups, and a linkage group is respectively installed on the first driven gear and the second driven gear; The linkage assembly includes a first link (11) and a second link (12). One end of the first link (11) and one end of the second link (12) are rotatably connected by a hinged connection component (13), and a first spring (14) is installed between the first link (11) and the second link (12). The first driven gear and the second driven gear are rotatably connected to the hinged connecting component (13) respectively, and the first connecting rod (11) and the second connecting rod (12) are in contact with the microphone module (3).

6. The reconfigurable acoustic array conversion device according to claim 5, characterized in that: The turntable (4) has several arc-shaped grooves (15), and several telescopic rod assemblies are installed in several of the arc-shaped grooves (15).

7. The reconfigurable acoustic array conversion device according to claim 6, characterized in that: The telescopic rod assembly includes a drive unit and an arc-shaped rod (16), the arc-shaped rod (16) being in contact with the microphone module (3); The arc-shaped rod (16) is slidably connected in the arc-shaped groove (15), and a slide rod is installed in the arc-shaped groove (15). The arc-shaped rod (16) is slidably connected to the slide rod, and a second spring (17) is provided on the slide rod. One end of the second spring (17) is fixedly connected to the arc-shaped rod (16), and the other end is fixedly connected to the inner wall of the arc-shaped groove (15); The drive unit is installed in the arc-shaped slide groove (15) and is used to drive the arc-shaped rod (16) to slide along the arc-shaped slide groove (15).

8. The reconfigurable acoustic array conversion device according to claim 7, characterized in that: The microphone module (3) includes a microphone detection module and a drive rod. Several microphone detection modules are slidably connected in the annular track (1) and the arc-shaped sub-track (2). The drive rod is fixedly installed at the bottom of the microphone detection module. The arc-shaped rod (16), the first connecting rod (11) and the second connecting rod (12) are all in contact with the drive rod.

9. The reconfigurable acoustic array conversion device according to claim 5, characterized in that: The layered frame includes a top plate (18) and a bottom plate (19). The bottom plate (19) is fixed to the top plate (18) by a number of support rods (20), and the top plate (18) is located above the bottom plate (19). The first connecting rod (11) and the second connecting rod (12) are both in contact with the support rods (20). Several of the circular tracks (1) and several of the arc-shaped sub-tracks (2) are opened through the top surface of the top plate (18), the first motor (5) and the second motor (6) are installed at the bottom of the bottom plate (19); the turntable (4) is rotatably connected to the top plate (18), and the central drive shaft is installed on the top plate (18) through a rolling bearing.

10. The reconfigurable acoustic array conversion device according to claim 5, characterized in that: The hinged connection component (13) includes a bolt, a washer, and a nut; one end of the first connecting rod (11) and one end of the second connecting rod (12) are rotatably connected by the bolt, and the first driven gear and the second driven gear are respectively rotatably connected to the bolt, and the washer and the nut are both installed on the bolt.

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