CN202562892U - Acoustic absorption coefficient measurement system for standing wave tube method - Google Patents
Acoustic absorption coefficient measurement system for standing wave tube method Download PDFInfo
- Publication number
- CN202562892U CN202562892U CN2012201238456U CN201220123845U CN202562892U CN 202562892 U CN202562892 U CN 202562892U CN 2012201238456 U CN2012201238456 U CN 2012201238456U CN 201220123845 U CN201220123845 U CN 201220123845U CN 202562892 U CN202562892 U CN 202562892U
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- piston rod
- piston
- absorption coefficient
- tube
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Abstract
The utility model provides an acoustic absorption coefficient measurement system for a standing wave tube method. The acoustic absorption coefficient system comprises a standing wave tube, a sound source, a probe, a guide rail and a trolley, wherein the tail end of the standing wave tube is provided with a sample tube; the sample tube is fixedly connected with the standing wave tube; the tail end of the sample tube is provided with a sealing cover; the sealing cover is fixedly connected with the sample tube; the sealing cover is provided with a piston hole; a piston is arranged in the sample tube; the piston comprises a piston rod and a sealing cover; the piston rod is inserted into the sealing cover through the piston hole; and the piston rod is provided with scales. The precision and the speed of placing samples can be improved by means of the scales formed on the piston rod, so that the test speed is improved, and test errors are reduced. The acoustic absorption coefficient measurement system can be applied to the determination of the acoustic absorption coefficients of acoustic materials.
Description
Technical field
The utility model relates to a kind of acoustical behavior testing tool, is specifically related to a kind of standing-wave-tube method acoustical absorption coefficient measuring system.
Background technology
The acoustical absorption coefficient of acoustical material is generally measured through standing-wave-tube method, and test philosophy is: sound source produces sound wave, and sound wave produces reflection wave along pipe transmmision at the test specimen end, and reflection wave and incident wave addition produce standing wave in pipe.Through moving the position measurement standing-wave ratio (SWR) of inserting tube, calculate the acoustical absorption coefficient of acoustical material at last according to standing-wave ratio (SWR).When acoustical material was measured, testpieces need be placed in the developmental tube of standing wave tube, and testpieces is confirmed the position through the piston of developmental tube.In operation, the position of testpieces generally is to rely on to feel to operate the site error that causes testpieces to place through regular meeting like this.
The utility model content
The purpose of the utility model provides a kind of measuring system that can quick and precisely place the measurement acoustical material acoustical absorption coefficient of testpieces.The utility model is carried out through following scheme:
A kind of standing-wave-tube method acoustical absorption coefficient measuring system comprises standing wave tube, sound source, inserting tube, guide rail and dolly, and the standing wave tube end is provided with the test specimen pipe; The test specimen pipe is fixedly connected with standing wave tube, and the end of test specimen pipe is provided with capping, and capping is fixedly connected with the test specimen pipe; Capping is provided with piston hole, is provided with piston in the test specimen pipe, and piston comprises piston rod and capping; Piston rod is interspersed in the capping through piston hole, and piston rod is provided with scale.
Testpieces is when test; Need put into the test specimen pipe; Testpieces is advanced to testing position through piston, when after on the piston rod scale being set, objective control can have been arranged to the particular location of testpieces; The operator can be made things convenient for exactly testpieces is located, avoiding the people is the test error that causes.
As preferred version, piston-rod end is provided with the push-and-pull piece, and the push-and-pull piece is fixedly connected with piston rod.The push-and-pull piece can help the push-and-pull of operator to piston rod.
As preferred version, piston rod is provided with anti-skidding line.Piston rod can play a fixation to piston rod after anti-skidding line is set behind the piston arrives precalculated position.
As preferred version, capping is connected through bayonet socket with the test specimen pipe.Capping can be passed through the free installing/dismounting of bayonet socket.
As preferred version, the scale on the piston rod is arranged on the top of piston rod.Scale is arranged on upper surface, is convenient to the operator and reads.
Owing to adopt technique scheme; The beneficial effect of the utility model is: improved manually operated accuracy through the utility model; Avoided the error of manual operation, and can improve the speed of test fast and accurately with the testpieces location to the position of testpieces.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model,
Fig. 2 is the partial enlarged drawing at A place among Fig. 1.
Among the figure: 1 standing wave tube, 2 sound sources, 3 inserting tubes, 4 guide rails, 5 dollies, 6 test specimen pipes, 7 cappings, 8 piston holes, 9 pistons, 10 piston rods, 11 slide blocks, 12 scales, 13 push-and-pull pieces.
Embodiment
With specific embodiment the utility model is done further explanation below.
As shown in Figure 1, a kind of standing-wave-tube method acoustical absorption coefficient measuring system, it comprises standing wave tube 1, sound source 2, inserting tube 3, guide rail 4 and dolly 5; Standing wave tube 1 end is equipped with test specimen pipe 6, and test specimen pipe 6 is threaded with standing wave tube 1, and is as shown in Figure 2; The end of test specimen pipe 6 is equipped with capping 7, and capping 7 and test specimen pipe 6 are connected through bayonet socket, and capping 7 is provided with piston hole 8; Be provided with piston 9 in the test specimen pipe 6, piston 9 comprises piston rod 10 and slide block 11, and piston rod 10 is interspersed in the capping 7 through piston hole 8; Anti-skidding line is arranged on the piston rod 10; The upper surface of piston rod 10 is carved with scale 12, and piston rod 10 ends are connected with the push-and-pull piece 13 of round pie, and push-and-pull piece 13 and piston rod 10 are through being threaded together.
At the trial, capping 7 and piston 9 are pulled down, trial target is put into test specimen pipe 6; Then piston 9 is installed, and capping 7 usefulness bayonet sockets are buckled well, according to the size of trial target and the size of developmental tube 6; Calculate the propelling size of piston 7, the scale on the piston rod 10 is read on the limit then, and the limit promotes push-and-pull piece 13 and comes propelling piston bar 10; Slide block 11 motoring ring test article are moved forward, and when the scale demonstration was identical with calculating, trial target had also just arrived the precalculated position.At this moment, there is bigger friction force between anti-skidding line on the piston rod and the capping 7, prevents that trial target is moved.
Claims (5)
1. a standing-wave-tube method acoustical absorption coefficient measuring system comprises standing wave tube (1), sound source (2), inserting tube (3), guide rail (4) and dolly (5), it is characterized in that; Standing wave tube (1) end is provided with test specimen pipe (6), and test specimen pipe (6) is fixedly connected with standing wave tube (1), and the end of test specimen pipe (6) is provided with capping (7); Capping (7) is fixedly connected with test specimen pipe (6); Capping (7) is provided with piston hole (8), is provided with piston (9) in the test specimen pipe (6), and piston (9) comprises piston rod (10) and slide block (11); Piston rod (10) is interspersed in the capping (7) through piston hole (8), and piston rod (10) is provided with scale (12).
2. standing-wave-tube method acoustical absorption coefficient measuring system according to claim 1 is characterized in that, piston rod (10) end is provided with push-and-pull piece (13), and push-and-pull piece (13) is fixedly connected with piston rod (10).
3. standing-wave-tube method acoustical absorption coefficient measuring system according to claim 1 and 2 is characterized in that piston rod (10) is provided with anti-skidding line.
4. standing-wave-tube method acoustical absorption coefficient measuring system according to claim 1 and 2 is characterized in that, capping (7) is connected through bayonet socket with test specimen pipe (6).
5. standing-wave-tube method acoustical absorption coefficient measuring system according to claim 1 and 2 is characterized in that the scale (12) on the piston rod (10) is arranged on the upper surface of piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201238456U CN202562892U (en) | 2012-03-29 | 2012-03-29 | Acoustic absorption coefficient measurement system for standing wave tube method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201238456U CN202562892U (en) | 2012-03-29 | 2012-03-29 | Acoustic absorption coefficient measurement system for standing wave tube method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202562892U true CN202562892U (en) | 2012-11-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201238456U Expired - Fee Related CN202562892U (en) | 2012-03-29 | 2012-03-29 | Acoustic absorption coefficient measurement system for standing wave tube method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202562892U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592372A (en) * | 2013-11-21 | 2014-02-19 | 吉林大学 | Acoustic material mounting support for standing wave tube |
| CN104535647A (en) * | 2014-11-26 | 2015-04-22 | 华晨汽车集团控股有限公司 | Prediction apparatus for sound absorption and insulation performance of multilayer material and method |
| CN110501419A (en) * | 2019-07-18 | 2019-11-26 | 江苏大学 | A kind of acoustic measurement system of the axially adjustable uniform magnetic field loading device of band |
| CN114324589A (en) * | 2021-12-29 | 2022-04-12 | 电子科技大学(深圳)高等研究院 | Make things convenient for fixed sound wave testing arrangement of sample material |
-
2012
- 2012-03-29 CN CN2012201238456U patent/CN202562892U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592372A (en) * | 2013-11-21 | 2014-02-19 | 吉林大学 | Acoustic material mounting support for standing wave tube |
| CN104535647A (en) * | 2014-11-26 | 2015-04-22 | 华晨汽车集团控股有限公司 | Prediction apparatus for sound absorption and insulation performance of multilayer material and method |
| CN110501419A (en) * | 2019-07-18 | 2019-11-26 | 江苏大学 | A kind of acoustic measurement system of the axially adjustable uniform magnetic field loading device of band |
| CN114324589A (en) * | 2021-12-29 | 2022-04-12 | 电子科技大学(深圳)高等研究院 | Make things convenient for fixed sound wave testing arrangement of sample material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20140329 |