Blade type low-frequency sound source underwater sounding device

Abstract

The utility model relates to a blade type low-frequency sound source underwater sounding device. The blade type low-frequency sound source underwater sounding device comprises a motor, a fixed cylinder, a transmission shaft, blades and a swing assembly. The motor is fixedly installed at one end of the fixing cylinder, the transmission shaft is rotatably installed in the fixing cylinder, one end of the transmission shaft is fixedly connected with an output shaft of the motor, the other end of the transmission shaft is fixedly provided with a rotating seat, a swing seat is rotatably arranged on the rotating seat, and the rotating seat can drive the swing seat to rotate around the Z axis. The swing assembly is fixedly connected with the swing base and can control the rotating angle of the swing base around the Y axis. The blades are driven to rotate around the Z axis through the motor, the transmission shaft, the rotating base and the swing base, then the swing base is driven to deflect back and forth around the Y axis through the swing assembly to further drive the blades to deflect, infrasonic waves are generated through rotation and deflection of the blades, the whole structure is simple, and the conversion efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of underwater sound generation, in particular to a blade-type low-frequency sound source underwater sound generation device. Background Art

[0002] Sound waves are the main means of long-distance transmission of underwater information. The propagation of sound waves in the ocean is mainly affected by the ocean acoustic environment. The existing sound generation technologies mainly include electric sound generation, explosion sound generation and fluid sound generation. Electric sound generation refers to the sound wave generation technology that uses various transducers to convert electrical energy into sound energy. Explosion sound generation uses explosions to generate strong sound waves. Fluid sound generation refers to the controlled discharge of fluids such as compressed air, high-pressure steam or high-pressure gas under a certain pressure to stimulate the vibration of the surrounding medium to form continuous sound waves of the required frequency band and intensity. At present, most infrasound generating devices are complex in structure and bulky in size. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The utility model provides a blade-type low-frequency sound source underwater sound generating device, aiming to solve the technical problems of the underwater sound source sound generating device in the prior art being complex in structure and bulky in size.

[0005] (II) Technical solution

[0006] In order to solve the above problems, the utility model provides a blade-type low-frequency sound source underwater sound generating device, the blade-type low-frequency sound source underwater sound generating device comprises: a motor, a fixing tube, a transmission shaft, a blade and a swinging assembly;

[0007] The motor is fixedly mounted at one end of the fixed cylinder, the transmission shaft is rotatably mounted in the fixed cylinder, one end of the transmission shaft is fixedly connected to the output shaft of the motor, the other end of the transmission shaft is fixedly provided with a rotating seat, a swing seat is rotatably provided on the rotating seat, the rotating seat can drive the swing seat to rotate around the Z axis, the blade is provided on the swing seat, the swing assembly is fixedly connected to the swing seat, the swing assembly can control the rotation angle of the swing seat around the Y axis, wherein the Z axis and the Y axis are perpendicular, and the direction of the center line of the transmission shaft coincides with the direction of the Z axis.

[0008] Preferably, the swing assembly comprises an external moving plate and a connecting rod mechanism;

[0009] A sealing cylinder is provided on one end of the fixed cylinder facing the blade, a sealing member is provided between the sealing cylinder and the fixed cylinder, a hole is provided on the sealing cylinder for the transmission shaft to pass through, the external movable disk is slidably installed in the sealing cylinder, one end of the connecting rod mechanism is connected to the external movable disk, and the other end of the connecting rod mechanism is connected to the swing seat, the external movable disk can move along the Z axis and drive the swing seat to rotate around the Y axis through the connecting rod mechanism.

[0010] Preferably, the connecting rod mechanism comprises: a fixing rod, a connecting rod and a connecting block;

[0011] A rotating rod is fixedly arranged on one side of the swing seat, and a sliding rod is arranged on one end of the rotating rod;

[0012] One end of the fixed rod is arranged on the external movable plate, and the other end of the fixed rod is connected to one end of the connecting rod. The connecting block is arranged at the other end of the connecting rod, and a sliding groove is arranged on the connecting block. The sliding rod is arranged in the sliding groove, and the sliding rod can move along the sliding groove.

[0013] Preferably, four swing seats are arranged on the rotating seat, and each swing seat is correspondingly provided with a blade.

[0014] Preferably, a coil is arranged in the fixed cylinder, a magnet is fixedly arranged in the external movable disk, and the coil can push the external movable disk to move when energized.

[0015] Preferably, a vibration table is provided between the motor and the fixed cylinder, the motor is mounted on one side of the vibration table, and the fixed cylinder is mounted on the other side of the vibration table.

[0016] Preferably, the blade-type low-frequency sound source underwater sound generating device further comprises a sinking and floating barrel, a sinking and floating chamber is arranged in the sinking and floating barrel, and a sealing port communicating with the sinking and floating chamber is arranged on the sinking and floating barrel;

[0017] The motor, the fixing tube and the vibration table are all located in the sinking and floating cavity. One end of the fixing tube facing the blade can extend out of the sinking and floating cavity through the sealing opening, and the fixing tube abuts against the sealing opening.

[0018] Preferably, a water inlet pump and a drainage pump are provided in the sinking and floating barrel, and a water inlet and a water outlet connected to the sinking and floating chamber are provided on the side wall of the sinking and floating barrel, the water inlet is connected to the inlet of the water inlet pump, and the water outlet is connected to the outlet of the drainage pump.

[0019] (III) Beneficial effects

[0020] The utility model drives the blades to rotate around the Z axis through a motor, a transmission shaft, a rotating seat and a swinging seat, and then drives the swinging seat to reciprocate and deflect around the Y axis through a swinging assembly to drive the blades to deflect, thereby realizing the rotation and deflection of the blades to generate infrasound waves. The entire structure is simple and the conversion efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the blade-type low-frequency sound source underwater sound-generating device of the utility model;

[0022] Figure 2 for Figure 1 A magnified view at point A;

[0023] Figure 3 It is a partial cross-sectional view of the blade-type low-frequency sound source underwater sound-generating device of the utility model;

[0024] Figure 4 The utility model is a schematic diagram of the assembly of the sinking and floating barrel in the blade-type low-frequency sound source underwater sound generating device.

[0025] [Description of Reference Numerals]

[0026] 1: Motor; 2: Fixed cylinder; 21: Blocking cylinder; 22: Coil; 3: Transmission shaft; 31: Rotating seat; 32: Swinging seat; 33: Rotating rod; 34: Sliding rod; 4: Blade; 5: Swinging assembly; 51: External moving plate; 52: Connecting rod mechanism; 53: Fixed rod; 54: Connecting rod; 55: Connecting block; 56: Slide; 6: Vibrating table; 7: Sinking and floating barrel; 71: Sinking and floating chamber; 72: Water inlet; 73: Water outlet. DETAILED DESCRIPTION

[0027] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Infrasound is a sound wave with a frequency of 0.0001 to 20 Hz. It is not within the hearing threshold of the human ear and cannot be felt by the human ear. It has a very long wavelength and a longer propagation distance than ordinary sound waves and radio waves. It can propagate to places thousands or even tens of thousands of kilometers away. Infrasound has very little attenuation during propagation and has strong penetrating ability. The low-frequency sound source underwater sound generator in the utility model is used to generate infrasound underwater.

[0032] The utility model provides a blade-type low-frequency sound source underwater sound-generating device, which comprises: a motor 1, a fixed cylinder 2, a transmission shaft 3, a blade 4 and a swing assembly 5. The motor 1 is fixedly mounted at one end of the fixed cylinder 2, the transmission shaft 3 is rotatably mounted in the fixed cylinder 2, one end of the transmission shaft 3 is fixedly connected to the output shaft of the motor 1, a rotating seat 31 is fixedly arranged at the other end of the transmission shaft 3, a swing seat 32 is rotatably arranged on the rotating seat 31, the rotating seat 31 can drive the swing seat 32 to rotate around the Z axis, the blade 4 is arranged on the swing seat 32, the swing assembly 5 is fixedly connected to the swing seat 32, and the swing assembly 5 can control the angle of rotation of the swing seat 32 around the Y axis, wherein the Z axis is perpendicular to the Y axis, and the direction where the center line of the transmission shaft 3 is located coincides with the direction where the Z axis is located.

[0033] The utility model accelerates and modulates the airflow speed by adding the periodic swing of blades 4 around their own axis to the ordinary fan, thereby generating infrasound. When blades 4 rotate around the motor 1 axis at a frequency of Ω, blades 4 are modulated by a dynamic signal at a frequency of ω. s Periodic oscillation. The periodic oscillation of the blade 4 around its own axis is the decisive factor in the generation of infrasound. Within a certain range, the larger the angle of the blade 4, the larger the flow rate of the modulated infrasound source, and the smaller the angle of the blade 4, the smaller the flow rate of the modulated infrasound source. The utility model does not require a high-pressure gas source to drive, and directly converts the power input into sound energy output, and has a compact structure and high energy utilization. In summary, the utility model drives the blade 4 to rotate around the Z axis through the motor 1, the transmission shaft 3, the rotating seat 31 and the swing seat 32, and then drives the swing seat 32 to reciprocate around the Y axis through the swing assembly 5, thereby driving the blade 4 to swing, so that the blade 4 generates infrasound waves. The entire structure is simple and the conversion efficiency is high.

[0034] Furthermore, the swing assembly 5 includes an external moving disk 51 and a connecting rod mechanism 52; a sealing cylinder 21 is provided on the end of the fixed cylinder 2 facing the blade 4, a sealing member is provided between the sealing cylinder 21 and the fixed cylinder 2, a hole for the transmission shaft 3 to pass through is provided on the sealing cylinder 21, the external moving disk 51 is slidably installed in the sealing cylinder 21, one end of the connecting rod mechanism 52 is connected to the external moving disk 51, and the other end of the connecting rod mechanism 52 is connected to the swing seat 32, the external moving disk 51 can move along the Z axis and drive the swing seat 32 to rotate around the Y axis through the connecting rod mechanism 52. Specifically, in a specific embodiment of the utility model, the interior of the fixed cylinder 2 is hollow, and openings are provided at both ends. The opening at one end of the fixed cylinder 2 is sealed and connected to the motor 1, and a sealing cylinder 21 is sealed at the opening at the other end of the fixed cylinder 2. A cylindrical cavity is provided in the sealing cylinder 21, and an external moving disk 51 is slidably installed in the cylindrical cavity. The cylindrical cavity guides the movement of the external moving disk 51. One end of the cylindrical cavity is open near the end of the blade 4, and a sealing plate is provided at the other end of the cylindrical cavity. The sealing plate is provided with a hole for the transmission shaft 3 to pass through. The transmission shaft 3 can rotate in the hole, and the transmission shaft 3 and the sealing plate are sealed. In the above scheme, the movement of the external moving disk 51 in the Z-axis direction can drive the swing seat 32 to rotate through the connecting rod mechanism 52, thereby causing the blade 4 to produce periodic deflection, thereby generating infrasound waves underwater. In a preferred embodiment, the movement of the external moving disk 51 can be achieved by linear motor control or other mechanical mechanisms.

[0035] Furthermore, the connecting rod mechanism 52 includes: a fixed rod 53, a connecting rod 54 and a connecting block 55. A rotating rod 33 is fixedly provided on one side of the swing seat 32, and a sliding rod 34 is provided at one end of the rotating rod 33; one end of the fixed rod 53 is provided on the external movable disk 51, and the other end of the fixed rod 53 is connected to one end of the connecting rod 54, and a connecting block 55 is provided at the other end of the connecting rod 54, and a sliding groove 56 is provided on the connecting block 55, and the sliding rod 34 is provided in the sliding groove 56, and the sliding rod 34 can move along the sliding groove 56. When the external movable disk 51 moves, the sliding rod 34 on the swing seat 32 and the sliding groove 56 will rotate and move relative to each other, thereby driving the swing seat 32 to rotate. The maximum angle of rotation of the swing seat 32 is related to the length of the sliding groove 56, and the maximum angle of the deflection of the blade 4 can be controlled by sliding grooves 56 of different lengths.

[0036] In a preferred embodiment, four swing seats 32 are arranged on the rotating seat 31 , and a blade 4 is correspondingly arranged on each swing seat 32 .

[0037] In addition, a coil 22 is provided in the fixed cylinder 2, and a magnet is fixedly provided in the external moving disk 51. The coil 22 can push the external moving disk 51 to move when energized. In this embodiment, by passing a periodically changing current into the coil 22, the magnetic poles at both ends of the coil 22 can be periodically changed, so as to achieve attraction or repulsion of the external moving disk 51, and further achieve control of the reciprocating movement of the external moving disk 51 in the cylindrical cavity.

[0038] Finally, a vibration table 6 is arranged between the motor and the fixed cylinder 2, the motor is mounted on one side of the vibration table 6, and the fixed cylinder 2 is mounted on the other side of the vibration table 6. The blade 4 type low-frequency sound source underwater sound generating device also includes a sinking and floating barrel 7, a sinking and floating chamber 71 is arranged in the sinking and floating barrel 7, and a sealing port connected to the sinking and floating chamber 71 is arranged on the sinking and floating barrel 7. The motor, the fixed cylinder 2 and the vibration table 6 are all located in the sinking and floating chamber 71, and the end of the fixed cylinder 2 facing the blade 4 can extend out of the sinking and floating chamber 71 through the sealing port, and the fixed cylinder 2 abuts against the sealing port. The side wall of the sinking and floating barrel 7 can be fixedly connected to the vibration table 6. A water inlet pump and a drainage pump are arranged in the sinking and floating barrel 7, and a water inlet 72 and a water outlet 73 connected to the sinking and floating chamber 71 are arranged on the side wall of the sinking and floating barrel 7, the water inlet 72 is connected to the inlet of the water inlet pump, and the water outlet 73 is connected to the outlet of the drainage pump. By injecting water into the sinking and floating chamber 71 or draining the water in the sinking and floating chamber 71, the blade 4 type low-frequency sound source underwater sound generating device can be made to sink and float in the water, which facilitates the arrangement of the blade 4 type low-frequency sound source underwater sound generating device in the water.

[0039] It should be understood that the above description of the specific embodiments of the utility model is only for illustrating the technical route and features of the utility model, and its purpose is to enable those skilled in the art to understand the content of the utility model and implement it accordingly, but the utility model is not limited to the above specific implementation methods. All changes or modifications made within the scope of the claims of the utility model should be included in the protection scope of the utility model.

Claims

1. A blade-type low-frequency sound source underwater sound generating device, characterized in that: The blade-type low-frequency sound source underwater sound generating device comprises: a motor (1), a fixing cylinder (2), a transmission shaft (3), a blade (4) and a swinging assembly (5); The motor (1) is fixedly mounted on one end of the fixed cylinder (2); the transmission shaft (3) is rotatably mounted in the fixed cylinder (2); one end of the transmission shaft (3) is fixedly connected to the output shaft of the motor (1); a rotating seat (31) is fixedly arranged on the other end of the transmission shaft (3); a swing seat (32) is rotatably arranged on the rotating seat (31); the rotating seat (31) can drive the swing seat (32) to rotate around a Z axis; the blade (4) is arranged on the swing seat (32); the swing assembly (5) is fixedly connected to the swing seat (32); the swing assembly (5) can control the angle of rotation of the swing seat (32) around a Y axis, wherein the Z axis and the Y axis are perpendicular, and the direction of the center line of the transmission shaft (3) coincides with the direction of the Z axis.

2. The blade-type low-frequency sound source underwater sound generating device according to claim 1, characterized in that: The swing assembly (5) comprises an external movable plate (51) and a connecting rod mechanism (52); A sealing cylinder (21) is provided on one end of the fixed cylinder (2) facing the blade (4), a sealing member is provided between the sealing cylinder (21) and the fixed cylinder (2), a hole is provided on the sealing cylinder (21) for the transmission shaft (3) to pass through, the external movable disk (51) is slidably installed in the sealing cylinder (21), one end of the connecting rod mechanism (52) is connected to the external movable disk (51), and the other end of the connecting rod mechanism (52) is connected to the swing seat (32), the external movable disk (51) can move along the Z axis and drive the swing seat (32) to rotate around the Y axis through the connecting rod mechanism (52).

3. The blade-type low-frequency sound source underwater sound generating device as claimed in claim 2, characterized in that: The connecting rod mechanism (52) comprises: a fixing rod (53), a connecting rod (54) and a connecting block (55); A rotating rod (33) is fixedly provided on one side of the swing seat (32), and a sliding rod (34) is provided on one end of the rotating rod (33); One end of the fixed rod (53) is arranged on the external movable plate (51), and the other end of the fixed rod (53) is connected to one end of the connecting rod (54). The other end of the connecting rod (54) is provided with the connecting block (55), and the connecting block (55) is provided with a slide groove (56). The slide rod (34) is arranged in the slide groove (56), and the slide rod (34) can move along the slide groove (56).

4. The blade-type low-frequency sound source underwater sound generating device as claimed in claim 3, characterized in that: Four swing seats (32) are arranged on the rotating seat (31), and one blade (4) is correspondingly arranged on each swing seat (32).

5. The blade-type low-frequency sound source underwater sound generating device according to any one of claims 2 to 4, characterized in that: A coil (22) is arranged in the fixed cylinder (2), a magnet is fixedly arranged in the external movable disk (51), and the coil (22) can push the external movable disk (51) to move when power is supplied.

6. The blade-type low-frequency sound source underwater sound generating device according to any one of claims 1 to 4, characterized in that: A vibration table (6) is provided between the motor (1) and the fixed cylinder (2); the motor (1) is mounted on one side of the vibration table (6), and the fixed cylinder (2) is mounted on the other side of the vibration table (6).

7. The blade-type low-frequency sound source underwater sound generating device according to claim 6, characterized in that: The blade-type low-frequency sound source underwater sound generating device further comprises a sinking and floating barrel (7), a sinking and floating chamber (71) is arranged in the sinking and floating barrel (7), and a sealing port communicating with the sinking and floating chamber (71) is arranged on the sinking and floating barrel (7); The motor (1), the fixed tube (2) and the vibration table (6) are all located in the sinking and floating chamber (71); one end of the fixed tube (2) facing the blade (4) can extend out of the sinking and floating chamber (71) through the sealing opening, and the fixed tube (2) abuts against the sealing opening.

8. The blade-type low-frequency sound source underwater sound generating device as claimed in claim 7, characterized in that: A water inlet pump and a water discharge pump are arranged in the sinking and floating barrel (7), and a water inlet (72) and a water outlet (73) which are in communication with the sinking and floating chamber (71) are arranged on the side wall of the sinking and floating barrel (7), the water inlet (72) is connected to the inlet of the water inlet pump, and the water outlet (73) is connected to the outlet of the water discharge pump.

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