CN217586030U - Calibration frame for underwater sound pressure of free field - Google Patents
Calibration frame for underwater sound pressure of free field Download PDFInfo
- Publication number
- CN217586030U CN217586030U CN202220473701.7U CN202220473701U CN217586030U CN 217586030 U CN217586030 U CN 217586030U CN 202220473701 U CN202220473701 U CN 202220473701U CN 217586030 U CN217586030 U CN 217586030U
- Authority
- CN
- China
- Prior art keywords
- pull rod
- free
- slider
- fine setting
- pressure calibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
The utility model discloses a free field underwater sound pressure calibration frame, comprising a frame body, be equipped with the crossbeam on the support body, be equipped with three group's installation mechanisms on the crossbeam, three group's installation mechanisms go up the cooperation respectively and are equipped with two sets of receiving hydrophones and a set of transmitting transducer.
Description
Technical Field
The utility model belongs to the technical field of the calibration of free field underwater sound pressure, especially, relate to a free field underwater sound pressure calibration frame.
Background
In an acoustic calibration test, particularly in the calibration of an underwater acoustic transducer, concepts such as a free sound field, a pressure field and a diffuse sound field are often used, wherein the most common sound field which best conforms to the actual use environment belongs to the free sound field, while the most important acoustic quantity in the research of underwater acoustic technology is underwater acoustic pressure, and main electroacoustic parameters of various underwater acoustic devices are all based on the underwater acoustic pressure, such as a transmission voltage response, a receiving voltage sensitivity and the like, which must be calculated by detecting the underwater acoustic pressure value.
When free field underwater sound pressure calibration is carried out, the transmitting transducer, the receiving transducer and the standard hydrophone are required to be arranged on a precise calibration frame, so that the calibration frame is an important hardware component for carrying out free field underwater sound pressure calibration; due to the requirements of the use environment, the calibration frame has to be rust-proof, corrosion-resistant, small in sound scattering, suitable for installation of various transducers, high in machining precision and positioning precision, high in structural strength and light in self weight, single in fixed position of the transmitting transducer and the receiving transducer of the existing calibration frame, and certain in deviation in the measurement process.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome prior art not enough, provide a free field underwater sound pressure calibration frame.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a free field underwater sound pressure calibration frame, includes the support body, be equipped with the crossbeam on the support body, be equipped with three group's installation mechanisms on the crossbeam, cooperate respectively on three group's installation mechanisms to be equipped with two sets of receiving hydrophones and a set of transmitting transducer.
Furthermore, installation mechanism is including can be on the crossbeam gliding slider, the slider top is equipped with first fastening screw, the front portion is equipped with the slider briquetting on the slider, slider bottom fixedly connected with pull rod.
Furthermore, the lifting adjusting component comprises a lifting adjusting nut fixing block fixedly connected with the pull rod, a rotatable lifting adjusting nut is sleeved in the lifting adjusting nut fixing block, a pull rod joint with one end capable of sliding up and down is arranged on the pull rod, the pull rod joint is in threaded connection with the lifting adjusting nut, a carbon fiber pipe is fixedly connected to the other end of the pull rod joint, and a clamp is fixedly connected to the other end of the carbon fiber pipe.
Furthermore, a lifting adjusting assembly is arranged at the bottom of the pull rod, and a fine adjusting assembly is arranged on the side portion of the sliding block.
Further, the fine setting subassembly is including can slide on the crossbeam and set up the fine setting fixed block at the slider lateral part, fine setting fixed block upper end is equipped with second fastening bolt, fine setting fixed block bottom is equipped with can the pivoted fine setting gyro wheel, the slider middle part is equipped with horizontal fine setting screw rod, the fine setting gyro wheel with horizontal fine setting screw rod spiro union cooperation.
Furthermore, scales are arranged on the cross beam.
Furthermore, a plurality of contact bolts are arranged on the outer wall of the lifting adjusting nut fixing block.
Furthermore, the fixture is divided into a first fixture and a second fixture, the first fixture can fix the receiving hydrophones, the second fixture can fix the transmitting transducer, and the transmitting transducer is located between the two receiving hydrophones.
Further, the pull rod is fixed on the sliding block through a screw.
Furthermore, a limit screw is arranged on the pull rod joint.
In conclusion, the positions of the receiving hydrophone and the transmitting transducer can be roughly adjusted and can also be finely adjusted through the matching of the sliding block and the fine adjustment component, so that the centers of the receiving hydrophone and the transmitting transducer can be adjusted to be on the same horizontal line; the carbon fiber pipe can effectively reduce the interference in the measurement process, and only need change the carbon fiber pipe, can measure the receiving hydrophone and the transmitting transducer of different model sizes, and reuse rate is high.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural diagram of the mounting mechanism.
Fig. 3 is a schematic structural view of the lifting adjustment assembly.
In the figure: the device comprises a frame body 1, a beam 2, a receiving hydrophone 3, a transmitting transducer 4, a sliding block 5, a first fastening screw 50, a sliding block pressing block 51, a pull rod 52, a lifting adjusting nut fixing block 6, a lifting adjusting nut 60, a pull rod connector 61, a carbon fiber pipe 62, a first clamp 63, a second clamp 66, a contact bolt 64, a limiting screw 65, a fine adjustment fixing block 7, a second fastening bolt 70, a fine adjustment roller 71 and a transverse fine adjustment screw 72.
Detailed Description
As shown in fig. 1-3, a free field underwater sound pressure calibration frame comprises a frame body 1, wherein the frame body 1 is made of an antirust material, a cross beam 2 is arranged on the frame body 1, scales are arranged on the cross beam 2, three groups of mounting mechanisms are arranged on the cross beam 2, and two groups of receiving hydrophones 3 and a group of transmitting transducers 4 are arranged on the three groups of mounting mechanisms in a matched mode respectively.
Specifically, installation mechanism is including gliding slider 5 on crossbeam 2, 5 tops of slider are equipped with first fastening screw 50, first fastening screw 50 bottoms are equipped with the stripper plate, the front portion is equipped with slider briquetting 51 on slider 5, is equipped with a spout on slider 5, and the height of spout is greater than the height of crossbeam 2 for crossbeam 2 can inlay in the spout, and the cooperation through slider briquetting 51 and slider 5 makes the spout cover can not drop on crossbeam 2, when removing slider 5 to required position, and rotatory first fastening screw 50 makes the distance of stripper plate and spout bottom surface reduce gradually, thereby makes the bottom surface of spout and crossbeam 2 bottom surface hug closely, and the bottom surface of stripper plate 51 and the top surface of crossbeam 2 hug closely, and slider 5 bottom spiro union fixedly connected with pull rod 52, the pull rod 52 bottom is equipped with the lift adjustment subassembly, the slider 5 lateral part is equipped with the fine setting subassembly.
Specifically, the lifting adjusting component comprises a lifting adjusting nut fixing block 6 fixed with the pull rod 52 in a threaded manner, a rotatable lifting adjusting nut 60 is sleeved in the lifting adjusting nut fixing block 6, a pull rod joint 61 with one end capable of sliding up and down is arranged on the pull rod 52, the cross section of the end part of the pull rod joint 61 is non-circular, the pull rod joint 61 is in threaded connection with the lifting adjusting nut 6, a through hole is formed in the middle of the lifting adjusting nut 6 and is used for avoiding the pull rod joint 61, the problem that the rotation of the lifting adjusting nut 6 is influenced by the non-circular end part of the cross section of the pull rod joint 61 is solved, a limit screw 65 in threaded connection is arranged on the end part of the pull rod joint 61, and the limit screw 65 can prevent the pull rod joint 61 from being separated from the pull rod 52, the other end of the pull rod joint 61 is fixedly connected with a carbon fiber tube 62, the other end of the carbon fiber tube 62 is fixedly connected with a clamp 63, the clamp is divided into a first clamp 63 and a second clamp 66, the first clamp 63 can fix the hydrophone 3, the second clamp 66 can fix the transmitting transducer 4, the transmitting transducer 4 is located between the two hydrophones 3, a plurality of contact bolts 64 are arranged on the outer wall of the lifting adjusting nut fixing block 6, the lifting adjusting nut 6 is rotated to enable the pull rod joint 61 to ascend or descend, the hydrophone 3 and the transmitting transducer 4 connected at the lower end are driven to ascend or descend, and the contact bolts 64 are made to be in contact with the lifting adjusting nut 6 by rotating the contact bolts 64, so that the lifting adjusting nut 6 is prevented from rotating in the calibration process and the calibration result is prevented from being influenced.
Specifically, the fine setting subassembly is including can slide on the crossbeam 2 and set up the fine setting fixed block 7 at the slider 5 lateral part, fine setting fixed block 7 upper end is equipped with second fastening bolt 70, fine setting fixed block 7 bottom is equipped with can pivoted fine setting gyro wheel 71, slider 5 middle part is equipped with horizontal fine setting screw rod 72, fine setting gyro wheel 71 with horizontal fine setting screw rod 72 spiro union cooperation, rotating fine setting gyro wheel 71 can drive horizontal fine setting screw rod 72 lateral shifting to it adjusts to drive slider 5.
The working principle is as follows: the other end of the carbon fiber tube 62 is bonded on the pull rod joint 61, the pull rod joint 61 is connected with the lifting adjusting nut 60 through threads, and the lifting adjusting nut 60 is rotated to drive the pull rod joint 61 to ascend or descend; the lifting adjusting nut fixing block 6 is sleeved on the lifting adjusting nut 60, the lifting adjusting nut fixing block 6 is fixed on the pull rod 52 through screws, the pull rod 52 is fixed on the sliding block 5 through screws, finally, the receiving hydrophone 3 or the transmitting transducer 4 is fixed on the clamp 63, the sliding block 5 and the sliding block pressing block 51 are sleeved on the cross beam 2 through screws, the transverse fine adjusting screw 72 is fixed on the sliding block 5 through screws, the fine adjusting fixing block 7 and the fine adjusting roller 71 are sleeved on the transverse fine adjusting screw 72, the fine adjusting roller 71 is rotated to drive the transverse fine adjusting screw 72 to transversely move, so that the sliding block 5 is driven to move to a required position, the clamp 63 is sleeved on the carbon fiber tube 62 and fixed through screws.
Claims (10)
1. The utility model provides a free field underwater sound pressure calibration frame which characterized in that: including support body (1), be equipped with crossbeam (2) on support body (1), be equipped with three group's installation mechanisms on crossbeam (2), cooperate respectively on three group's installation mechanisms to be equipped with two sets of receiving hydrophones (3) and a set of transmitting transducer (4).
2. The free-field underwater acoustic pressure calibration jig of claim 1, wherein: installation mechanism is including gliding slider (5) on crossbeam (2), slider (5) top is equipped with first fastening screw (50), first fastening screw (50) bottom is equipped with the stripper plate, and the front portion is equipped with slider briquetting (51) on slider (5), and slider (5) bottom fixedly connected with pull rod (52), pull rod (52) bottom is equipped with the lift adjustment subassembly.
3. The free-field underwater acoustic pressure calibration jig of claim 2, wherein: the lift adjustment subassembly include with pull rod (52) fixed connection's lift adjustment nut fixed block (6), rotatable lift adjustment nut (60) are equipped with to lift adjustment nut fixed block (6) endotheca, be equipped with pull rod joint (61) on pull rod (52), pull rod joint (61) one end and pull rod (52) sliding connection, pull rod joint (61) with lift adjustment nut (60) are threaded connection, the other end fixedly connected with carbon fiber tube (62) of pull rod joint (61), the other end fixedly connected with anchor clamps of carbon fiber tube (62).
4. The free-field underwater acoustic pressure calibration jig of claim 2, wherein: the sliding block (5) is matched with the cross beam (2) and is provided with a fine adjustment assembly.
5. The free-field underwater acoustic pressure calibration jig of claim 4, wherein: fine setting subassembly is including can slide on crossbeam (2) and set up fine setting fixed block (7) at slider (5) lateral part, fine setting fixed block (7) upper end is equipped with second fastening bolt (70), fine setting fixed block (7) bottom is equipped with can pivoted fine setting gyro wheel (71), slider (5) middle part is equipped with horizontal fine setting screw rod (72), fine setting gyro wheel (71) with horizontal fine setting screw rod (72) spiro union cooperation.
6. The free-field underwater acoustic pressure calibration jig of claim 1, wherein: scales are arranged on the cross beam (2).
7. The free-field underwater acoustic pressure calibration jig of claim 3, wherein: the outer wall of the lifting adjusting nut fixing block (6) is provided with a plurality of contact bolts (64).
8. The free-field underwater acoustic pressure calibration jig of claim 3, wherein: the clamp is divided into a first clamp (63) and a second clamp (66), the first clamp (63) can fix the receiving hydrophones (3), the second clamp (66) can fix the transmitting transducer (4), and the transmitting transducer (4) is located between the two receiving hydrophones (3).
9. The free-field underwater acoustic pressure calibration jig of claim 2, wherein: the pull rod (52) is fixed on the sliding block (5) through a screw.
10. The free-field underwater acoustic pressure calibration jig of claim 3, wherein: and a limit screw (65) is arranged on the pull rod joint (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220473701.7U CN217586030U (en) | 2022-03-04 | 2022-03-04 | Calibration frame for underwater sound pressure of free field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220473701.7U CN217586030U (en) | 2022-03-04 | 2022-03-04 | Calibration frame for underwater sound pressure of free field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217586030U true CN217586030U (en) | 2022-10-14 |
Family
ID=83538951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220473701.7U Active CN217586030U (en) | 2022-03-04 | 2022-03-04 | Calibration frame for underwater sound pressure of free field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217586030U (en) |
-
2022
- 2022-03-04 CN CN202220473701.7U patent/CN217586030U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114485895A (en) | Calibration frame for underwater sound pressure of free field | |
| CN219957184U (en) | Wear-resisting high hardness aluminium alloy check out test set of buckling that prevents | |
| CN105690422A (en) | Electrically controlled automatic zero correction device | |
| CN217586030U (en) | Calibration frame for underwater sound pressure of free field | |
| CN110186673B (en) | Experimental device for measuring mechanical properties of plastic gear planetary reducer | |
| CN203091466U (en) | Earing ratio measuring device | |
| CN210198886U (en) | Rotary friction and wear tester | |
| CN208496985U (en) | A kind of robot cylinder cap turns line positioning mechanism | |
| CN216955148U (en) | Steering gear bearing radial rigidity test fixture | |
| CN104624442B (en) | Plane leveling device | |
| CN212806821U (en) | Mounting bracket for detection and automobile part detection tool using same | |
| CN209524856U (en) | A kind of VW511 gs-oil separator cubing | |
| CN115265452A (en) | Automatic online detection device for wire diameter of electronic wire | |
| CN115435873A (en) | Water level early warning system and early warning method for hydraulic engineering | |
| CN213843454U (en) | Steering wheel contact test equipment | |
| CN209745886U (en) | Handheld ultrasonic detection probe wheel loading device | |
| CN211552777U (en) | Bearing ring chamfer inclined plane measuring tool | |
| CN112198425A (en) | Steering wheel contact test equipment | |
| CN218329815U (en) | High-sensitivity grating sensor | |
| CN221803224U (en) | MEMS pressure measuring core pressure transmitter | |
| CN110842804A (en) | Positioning module for metal bent pipe springback measurement | |
| CN212964359U (en) | Novel three-point static pressure device | |
| CN219053356U (en) | Impeller blade positioning mechanism | |
| CN220171318U (en) | High-precision adjusting device applicable to large-scale equipment | |
| CN218723833U (en) | Steel sheet flatness detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |