Adjustable near-field holographic scanning array

Abstract

The utility model relates to scanning matrix technical field especially, a kind of adjustable near-field holographic scanning matrix, including support structure, adjusting assembly, connecting block, support frame and multiple hydrophones;The adjusting assembly includes the screw rod of sliding connection with support structure;The connecting block is threaded on the screw rod;The support frame includes cross bar, telescopic rod structure's support rod and multiple with the mounting bracket and elastic cord of corresponding arrangement of hydrophone;The cross bar first end is fixedly connected with connecting block, tail end portion is rotatably connected with support rod tail end;Support rod first end is rotatably connected with support structure;Multiple mounting brackets are equidistantly arranged on cross bar, and mounting bracket is connected with support rod by elastic cord, by the utility model, hydrophone spacing can be quickly and accurately adjusted, to adapt to different measurement requirements, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of scanning array technology, specifically to an adjustable near-field holographic scanning array. Background Technology

[0002] In the field of acoustic research, to obtain the radiated sound field information of a sonar array, it is necessary to arrange a measurement hydrophone array in its radiated sound field region. To obtain sufficient sound field information to accurately reconstruct the array's radiated sound field, a sufficiently large measurement hydrophone array is required. To this end, in the prior art, the applicant's proposed near-field holographic scanning array (publication number CN223191352U) includes a vertical tube, plug, support, subframe, and hydrophones. Its lightweight, low-reflection, and easy-to-transport design is achieved through a detachable design and carbon fiber materials. However, this array has shortcomings in adjusting the hydrophone spacing: the hydrophones slide within the waist-shaped groove of the support via the subframe, requiring manual movement and re-fixing of each hydrophone during adjustment. This process is cumbersome and makes it difficult to guarantee the accuracy and consistency of the spacing, also affecting measurement efficiency. Therefore, a scanning array capable of quickly and accurately adjusting the hydrophone spacing is needed to improve the ease of use and efficiency of near-field holographic scanning. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide an adjustable near-field holographic scanning array. It revolutionizes the traditional discrete, manual method of adjusting the spacing between hydrophones into a centralized, interconnected adjustment mode, ensuring the convenience of the adjustment process and the consistency of the results. Operators do not need to spend time on the precise positioning of each hydrophone; they only need to focus on the single criterion of the verticality of the elastic rope to quickly complete the configuration of the entire array, greatly improving the ease of use and work efficiency of the equipment.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an adjustable near-field holographic scanning array, comprising a support structure, an adjustment component, a connecting block, a support frame, and multiple hydrophones; the adjustment component includes a screw rod slidably connected to the support structure; the connecting block is threaded onto the screw rod; the support frame includes a crossbar, a support rod with a telescopic structure, and multiple mounting brackets and elastic ropes corresponding to the hydrophones; the first end of the crossbar is fixedly connected to the connecting block, and the last end is rotatably connected to the last end of the support rod; the first end of the support rod is rotatably connected to the support structure; multiple mounting brackets are equally spaced on the crossbar, and the mounting brackets are connected to the support rods via elastic ropes.

[0005] Preferably, the support structure includes a flange and a vertical pipe fixed at the lower end of the flange; the flange has a countersunk hole with an inner diameter larger than that of the vertical pipe; the countersunk hole communicates with the vertical pipe; and the top of the screw has a limiting post that slides with the countersunk hole.

[0006] Preferably, the support rod consists of a main rod and a secondary rod that are slidably connected; the main rod is rotatably connected to the crossbar, and the secondary rod is rotatably connected to the lower part of the vertical tube; the main rod is provided with a plurality of lifting rings that are connected to the elastic ropes and are distributed at equal intervals.

[0007] Preferably, the axis of the crossbar is perpendicular to the axis of the vertical tube; the crossbar has a through-hole along its length; the mounting bracket is slidably mounted on the crossbar through the through-hole.

[0008] Preferably, the mounting bracket includes a vertical rod and a stop block; the upper part of the vertical rod passes through the stop block and the waist-shaped hole in sequence, and the vertical rod is fixedly connected to the stop block; the hydrophone is detachably disposed at the lower part of the vertical rod.

[0009] Preferably, the mounting bracket further includes an anti-slip pad; the upper part of the vertical rod passes through the anti-slip pad; the anti-slip pad is pressed between the abutment block and the horizontal rod.

[0010] Preferably, the top of the vertical rod has a lifting hole for engaging with the elastic rope.

[0011] Preferably, the lower end of the crossbar has multiple toothed grooves along its length that mate with the anti-slip pad.

[0012] Preferably, the anti-slip pad is made of silicone or rubber.

[0013] Preferably, multiple support frames are provided; the multiple support frames are evenly distributed around the axis of the screw. Compared with the prior art, the beneficial effects of this utility model are: 1. By rotating a single turntable to drive the adjustment component, the spacing of all hydrophones can be changed simultaneously, eliminating the tedious steps of manually moving and relocking each hydrophone individually in the traditional method. The adjustment process is time-saving and labor-saving, and the measurement efficiency is significantly improved. 2. The physical constraint of the elastic ropes automatically ensures that each mounting bracket and hydrophone is always in a stable, vertically suspended state. As long as the elastic ropes are vertical, it indicates that the spacing is properly adjusted and the hydrophones are in the same orientation, eliminating the need for additional measuring tools for calibration and effectively avoiding human error. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention; Figure 2 For the present utility model Figure 1 Schematic diagram of the structure at point A; Figure 3 This is a schematic diagram of the axial cross-section of the flange and the vertical pipe of this utility model; Figure 4 This is a schematic diagram of the adjustment component structure of this utility model; Figure 5 This is a schematic diagram of the support frame and hydrophone of this utility model.

[0015] In the diagram: 1 Flange, 2 Vertical pipe, 3 Adjustment assembly, 4 Connecting block, 5 Horizontal bar, 6 Support rod, 7 Mounting bracket, 8 Hydrophone, 9 Elastic rope, 10 Connecting seat, 11 Countersunk hole, 31 Limiting post, 32 Screw, 33 Turntable, 51 Waist hole, 61 Main rod, 62 Secondary rod, 63 Lifting ring, 71 Vertical bar, 72 Abutment block, 73 Anti-slip pad, 711 Lifting hole. Detailed Implementation

[0016] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.

[0017] This invention provides an adjustable near-field holographic scanning array, mainly used in the field of underwater acoustic measurement, especially in the near-field holographic measurement of sonar arrays. It is used in conjunction with a scanning device to accurately deploy hydrophone arrays and obtain radiated sound field information.

[0018] See Figure 1-5 In one embodiment of this utility model, an adjustable near-field holographic scanning array includes: a support structure fixedly connected to a scanning device, an adjustment component 3 movably connected to the support structure, a connecting block 4 disposed on the adjustment component 3, two sets of hydrophone support frames symmetrically disposed on both sides of the adjustment component 3 via the connecting block 4 and the support structure, and a plurality of hydrophones 8 spaced apart on the hydrophone support frames; by the action of the adjustment component 3 and the connecting block 4, the spacing between the hydrophones 8 can be adjusted, thereby improving the applicability of the scanning array and ensuring the accuracy of the holographic scanning data.

[0019] The support structure includes a flange 1 and a vertical pipe 2 arranged coaxially. The flange 1 is fixed to the top of the vertical pipe 2 by welding and is used to connect with a scanning device (such as a lifting mechanism or positioning platform). The flange 1 has a countersunk hole 11 on its axis. The inner diameter of the countersunk hole 11 is larger than the inner diameter of the vertical pipe 2. The countersunk hole 11 is connected to the vertical pipe 2.

[0020] The adjustment assembly 3 is used to precisely adjust the spacing of the hydrophones 8, and includes a limiting post 31, a screw 32, and a turntable 33. The limiting post 31 is coaxially fixed to the top of the screw 32 by an internal angle screw. Its outer diameter is adapted to slide within the countersunk hole 11 and is larger than the inner diameter of the vertical tube 2, so the limiting post 31 can slide within the countersunk hole 11 but will not come out. The screw 32 slides through the vertical tube 2 and extends downwards, and the turntable 33 is coaxially fixed to the lower end of the screw 32. The connecting block 4 is threadedly fitted onto the screw 32 and is located below the vertical tube 2. When the turntable 33 is rotated, the screw 32 rotates, driving the connecting block 4 to move up and down.

[0021] The hydrophone support frame includes a crossbar 5, a support rod 6, and several connecting seats 10, as well as multiple sets of mounting brackets 7 and elastic ropes 9.

[0022] The crossbar 5 is horizontally positioned, and its first end is fixed to the connecting block 4 by screws, so that the axis of the crossbar 5 is perpendicular to the axis of the screw 32; the crossbar 5 has a waist-shaped hole 51 that runs through it from top to bottom along its length for mounting the mounting bracket 7.

[0023] The support rod 6 is a telescopic rod, including a main rod 61 and a secondary rod 62. The main rod 61 has a sliding hole at its axial center, and the secondary rod 62 is slidably connected to the sliding hole at its tail end, so that the secondary rod 62 can reciprocate into or out of the main rod 61 under the action of external force. The tail end of the main rod 61 is rotatably connected to the tail end of the crossbar 5 through a connecting seat 10. The head end of the secondary rod 62 is rotatably connected to the lower part of the vertical pipe 2 through a connecting seat 10. The main rod 61 is also fixed with a plurality of equally spaced lifting rings 63, and the distance between two adjacent lifting rings 63 is a. By rotating the turntable 33, the connecting block 4 can be driven to slide up and down, thereby changing the angle between the support rod 6 and the crossbar 5. The angle between the support rod 6 and the crossbar 5 is named θ. The mounting bracket 7 includes a vertical rod 71, a stop block 72, and an anti-slip pad 73. The upper part of the vertical rod 71 longitudinally passes through the stop block 72, the anti-slip pad 73, and the oblong hole 51. The stop block 72 is fixedly connected to the vertical rod 71. The anti-slip pad 73 is slidably disposed between the stop block 72 and the horizontal rod 5 to increase friction and keep the vertical rod 71 vertical. The top of the vertical rod 71 has a lifting hole 711, and the lower part is detachably mounted with a hydrophone 8, which is suspended below the horizontal rod 5. Multiple mounting brackets 7 are evenly distributed along the horizontal rod 5 at intervals of b, and each mounting bracket 7 is connected to a lifting ring 63 by an elastic rope 9. The elastic rope 9 is in a stretched state, so that the anti-slip pad 73 is tightly attached to the horizontal rod 5, ensuring that the mounting bracket 7 is stably located directly below the lifting ring 63.

[0024] In this embodiment, the support structure and adjustment components are made of stainless steel and other metal materials to ensure strength. The hydrophone support frame, such as the crossbar 5, support rod 6 and mounting bracket 7, can be made of carbon fiber to reduce weight and reduce sound wave reflection and diffraction, thereby improving measurement accuracy.

[0025] When it is necessary to adjust the spacing b between two adjacent hydrophones 8, the turntable 33 is rotated, driving the connecting block 4 to move up and down, thereby changing the angle θ between the support rod 6 and the crossbar 5. According to geometric relationships, the hydrophone spacing b and the angle θ satisfy b = a * tan(90° - θ). Compared with the prior art, the spacing adjustment of the hydrophones 8 in the scanning array of this scheme is more convenient and does not require a reference. As long as the elastic rope is kept vertical, the adjustment process is time-saving and labor-saving.

[0026] In one embodiment, to ensure the stability of the mounting bracket 7, the lower end of the crossbar 5 may also have several small grooves along its length to increase the friction between the crossbar 5 and the anti-slip pad 73. The material of the anti-slip pad 7 can be selected according to specific circumstances, and can be silicone or rubber.

[0027] This technical solution revolutionizes the traditional discrete, manual method of adjusting hydrophone spacing into a centralized, interconnected adjustment mode. This design ensures the convenience of the adjustment process and the consistency of the results. Operators no longer need to spend time precisely positioning each hydrophone; they only need to focus on the single criterion of the verticality of the elastic rope to quickly complete the configuration of the entire array, greatly improving the ease of use and work efficiency of the equipment.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An adjustable near-field holographic scanning array, characterized in that: The system includes a support structure, an adjustment component (3), a connecting block (4), a support frame, and multiple hydrophones (8). The adjustment component (3) includes a screw (32) that is slidably connected to the support structure. The connecting block (4) is threaded onto the screw (32). The support frame includes a crossbar (5), a support rod (6) with a telescopic structure, and multiple mounting brackets (7) and elastic ropes (9) corresponding to the hydrophones (8). The first end of the crossbar (5) is fixedly connected to the connecting block (4), and the last end is rotatably connected to the last end of the support rod (6). The first end of the support rod (6) is rotatably connected to the support structure. Multiple mounting brackets (7) are equally spaced on the crossbar (5), and the mounting brackets (7) are connected to the support rod (6) through elastic ropes (9).

2. The adjustable near-field holographic scanning array according to claim 1, characterized in that: The support structure includes a flange (1) and a vertical pipe (2) fixed at the lower end of the flange (1); the flange (1) has a countersunk hole with an inner diameter larger than the inner diameter of the vertical pipe (2) at its axial center; the countersunk hole is connected to the vertical pipe (2); the top of the screw (32) is provided with a limiting post (31) that slides with the countersunk hole.

3. The adjustable near-field holographic scanning array according to claim 2, characterized in that: The support rod (6) consists of a main rod and a secondary rod that are slidably connected; the main rod is rotatably connected to the crossbar (5), and the secondary rod is rotatably connected to the lower part of the vertical tube (2); the main rod is provided with multiple hanging rings that are connected to the elastic rope (9) and are distributed at equal intervals.

4. An adjustable near-field holographic scanning array according to claim 3, characterized in that: The axial direction of the crossbar (5) is perpendicular to the axial direction of the vertical tube (2); the crossbar (5) has a waist-shaped hole (51) that runs through it from top to bottom along its length; the mounting bracket (7) is slidably mounted on the crossbar (5) through the waist-shaped hole (51).

5. An adjustable near-field holographic scanning array according to claim 4, characterized in that: The mounting bracket (7) includes a vertical rod (71) and a stop block (72); the upper part of the vertical rod (71) passes through the stop block (72) and the waist-shaped hole (51) in sequence, and the vertical rod (71) and the stop block (72) are fixedly connected; the hydrophone (8) is detachably disposed at the lower part of the vertical rod (71).

6. An adjustable near-field holographic scanning array according to claim 5, characterized in that: The mounting bracket (7) also includes an anti-slip pad (73); the upper part of the vertical rod (71) passes through the anti-slip pad (73); the anti-slip pad (73) is pressed between the abutment block (72) and the horizontal rod (5).

7. An adjustable near-field holographic scanning array according to claim 5, characterized in that: The top of the vertical rod (71) is provided with a lifting hole (711) that cooperates with the elastic rope (9).

8. An adjustable near-field holographic scanning array according to claim 6, characterized in that: The lower end of the crossbar (5) has multiple toothed grooves along its length that cooperate with the anti-slip pad (73).

9. An adjustable near-field holographic scanning array according to claim 6, characterized in that: The anti-slip pad (73) is made of silicone or rubber.

10. An adjustable near-field holographic scanning array according to claim 1, characterized in that: The support frame is provided in multiple ways; the multiple support frames are evenly distributed around the axis of the screw (32).

Images