CN107481594A - A kind of science popularization device of sound wave visual - Google Patents
A kind of science popularization device of sound wave visual Download PDFInfo
- Publication number
- CN107481594A CN107481594A CN201710641701.7A CN201710641701A CN107481594A CN 107481594 A CN107481594 A CN 107481594A CN 201710641701 A CN201710641701 A CN 201710641701A CN 107481594 A CN107481594 A CN 107481594A
- Authority
- CN
- China
- Prior art keywords
- roller
- elastic
- installing plate
- rocking bar
- elastic string
- 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.)
- Pending
Links
- 230000000007 visual effect Effects 0.000 title claims abstract description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/14—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for acoustics
Abstract
The present invention relates to stationary wave experiment science popularization field,The science popularization device of more particularly to a kind of sound wave visual,Including pedestal,Horizontally disposed roller,The motor of driving roller rotation,Elastic chord group and the lifting support for driving elastic chord group lifting,Elastic chord group includes several elastic strings being horizontally set on directly over roller,Elastic string is vertical with the axis of roller,The first crane and the second crane that include being arranged on elastic chord group both ends of lifting support,The face of cylinder of roller is provided with chequered with black and white striped,The height of the present invention according to the observation adjusts the distance between elastic string and roller by rotating the first rocking bar and the second rocking bar,Under the striped rotated on roller,It can be clearly seen that fluctuation,Rotate the second screwed pipe,Second screwed pipe is with respect to the first screwed pipe toward away from the certain displacement of the first installing plate generation,Elastic string is pullled to certain length,It is all tight to ensure every elastic string,Ensure that the elasticity of elastic string meets the requirement of experiment.
Description
Technical field
The present invention relates to stationary wave experiment science popularization field, the science popularization device of more particularly to a kind of sound wave visual.
Background technology
The research of the propagation law of string of a musical instrument upper ripple is an important experiment in Experiments of Machanics, and is put into comprehensive national
In college physical experiment teaching outline, general laboratory apparatus emphasis observes the standing wave formed on the string of a musical instrument, and determines string with experiment
During vibration, the relation of standing wave wavelength and tension force, the relation of standing wave wavelength and vibration frequency, and standing wave wavelength and string of a musical instrument density
Relation.
The elastic fluid of present stationary wave experiment equipment long-time fluctuate after will elasticity will step-down, experiment effect
Will be deteriorated, and elastic fluid and black and white strip the distance between can not adjust, observing the effect of standing wave can not adjust.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of science popularization device of sound wave visual.
A kind of science popularization device of sound wave visual, include the driving electricity of pedestal, horizontally disposed roller, driving roller rotation
The lifting support of machine, elastic chord group and the elastic chord group lifting of driving, the pedestal are provided with the support frame for backing drum, bullet
Property chord group includes several elastic strings being horizontally set on directly over roller, and the axis of all elastic string is located at same level
Interior, elastic string is vertical with the axis of roller, and lifting support includes the first crane for being arranged on elastic chord group both ends and second liter
Frame is dropped, and roller is arranged between the first crane and the second crane, and each elastic string is set close to one end of the first crane
There is stop head, each elastic string is jagged close to the setting of one end of the second crane, and the side of motor is provided with control and opened
Close, motor is electrically connected with controlling switch, and the face of cylinder of roller is provided with chequered with black and white striped, and striped is close from roller
One end of motor extends to the one end of roller away from motor.
Further, first crane includes horizontally disposed first installing plate, the first lead and the first rocking bar,
First lead and the first rocking bar are vertically arranged, and the first installing plate is vertical with elastic string, and the both ends of the first installing plate are respectively provided with
There is the through hole run through for the first lead and the first rocking bar, the first installing plate is provided with several to be run through one by one for all elastic string
Cross-drilled hole, side of first installing plate away from roller is provided with several to adjust the adjustment of the elasticity of each elastic string
Portion.
Further, the adjustment portion includes horizontally disposed first screwed pipe and the second screwed pipe, the first screwed pipe with
Side of first installing plate away from roller is fixedly connected, and the axis of the first screwed pipe overlaps with the axis of through hole, the first screwed pipe
The inside thread of outside and the second screwed pipe coordinate.
Further, first installing plate is coordinated by the first sliding block and the first rocker driving, the bottom of the first rocking bar
First bearing seat is provided with, first bearing seat is provided with the bearing being rotatably assorted with the first rocking bar.
Further, first lead is arranged with the first latch segment, and the first latch segment is arranged on the first installing plate
Bottom, the first latch segment are provided with clamping screw, and the base of the first lead is provided with first flange seat.
Further, second crane includes horizontally disposed second installing plate, the second lead and the second rocking bar,
Second lead and the second rocking bar are vertically arranged, and the second installing plate is vertical with elastic string, and the second installing plate includes upper mounting plate
And lower installation board, the both ends of lower installation board are provided with the through hole run through for the second lead and the second rocking bar, lower installation board
Top is provided with several upper semi-circle breach, and the bottom of upper mounting plate is provided with several lower half circle breach, lower installation board with it is upper
Installing plate is bolted, and upper semi-circle breach cooperatively forms what several ran through for each elastic string one by one with lower half circle breach
Through hole, each upper semi-circle breach are provided with the pressure sword for compressing elastic string one end, and pressure sword is with elastic string close to the second crane
Breach coordinate.
Further, the lower installation board is coordinated by the second sliding block and the second rocker driving, and the bottom of the second rocking bar is set
Second bearing seat is equipped with, second bearing seat is provided with the bearing being rotatably assorted with the second rocking bar.
Further, second lead is arranged with the second latch segment, and the second latch segment is arranged on the second installing plate
Bottom, the second latch segment are provided with clamping screw, and the base of the second lead is provided with second flange seat.
Further, the controlling switch includes starting switch, shutdown switch and adjustment of rotational speed knob, starting switch, stops
Only switch and adjustment of rotational speed knob are electrically connected with motor.
Further, the area of section of all elastic strings is passed successively from the first rocking bar to the direction of the first lead
Subtract.
Beneficial effect：A kind of science popularization device of sound wave visual of the present invention, height according to the observation pass through rotation the
One rocking bar and the second rocking bar adjust elastic string and the distance between passed through, and when motor drives roller rotation, stir elastic string,
Stir elastic string generation to fluctuate, under the striped rotated on roller, can be clearly seen that fluctuation, rotate the second screwed pipe, the
Two screwed pipes, toward certain displacement occurs away from the first installing plate, elastic string are pullled certain length with respect to the first screwed pipe,
Ensure that every elastic string is all tight, ensure that the elasticity of elastic string meets the requirement of experiment.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram one of the present invention；
Fig. 2 is the dimensional structure diagram two of the present invention；
Fig. 3 is the structural decomposition diagram one of the present invention；
Fig. 4 is enlarged drawing at Fig. 3 A；
Fig. 5 is the structural decomposition diagram two of the present invention；
Fig. 6 is enlarged drawing at Fig. 5 B；
Fig. 7 is the structural decomposition diagram three of the present invention；
Fig. 8 is the sectional view of the present invention；
Description of reference numerals：Pedestal 1, roller 2, striped 2a, motor 3, elastic chord group 4, elastic string 4a, stop head
4a1, lifting support 5, the first crane 6, the first installing plate 6a, the first lead 6b, the first rocking bar 6c, the first latch segment 6d,
First bearing seat 6e, first flange seat 6f, the first sliding block 6h, the second crane 7, the second installing plate 7a, upper mounting plate 7a1, under
Installing plate 7a2, the second lead 7b, the second rocking bar 7c, the second latch segment 7d, second bearing seat 7e, second flange seat 7f, second
Sliding block 7h, adjustment portion 8, the first screwed pipe 8a, the second screwed pipe 8b, upper semi-circle breach 9, lower half circle breach 10, press sword 11, control
Switch 12.
Embodiment
With reference to Figure of description and embodiment, the specific embodiment of the present invention is described in further detail：
Referring to figs. 1 to a kind of science popularization device of sound wave visual shown in Fig. 8, including pedestal 1, horizontally disposed roller 2,
The lifting support 5 that motor 3, elastic chord group 4 and the elastic chord group 4 of driving that driving roller 2 rotates lift, the pedestal 1 are set
The support frame for backing drum 2 is equipped with, elastic chord group 4 includes several elastic strings being horizontally set on directly over roller 2
4a, all elastic string 4a axis are located in the same horizontal plane, and elastic string 4a is vertical with the axis of roller 2, and lifting support 5 includes
First crane 6 and the second crane 7 at the elastic both ends of chord group 4 are arranged on, roller 2 is arranged on the first crane 6 and second liter
Between dropping frame 7, each elastic string 4a is provided with close to one end of the first crane 6 stops head 4a1, and each elastic string 4a is close to the
One end setting of two cranes 7 is jagged, and the side of motor 3 is provided with controlling switch 12, motor 3 and controlling switch
12 are electrically connected with, and the face of cylinder of roller 2 is provided with chequered with black and white striped 2a, striped 2a from roller 2 close to motor 3 one
Hold to the one end of roller 2 away from motor 3 and extend.
Operation principle：Height according to the observation by rotate the first rocking bar 6c and the second rocking bar 7c adjust elastic string 4a with
The distance between pass through, when motor 3 drives the rotation of roller 2, elastic string 4a is stirred, elastic string 4a is stirred and produces fluctuation,
Under the striped 2a rotated on roller 2, fluctuation can be clearly seen that, the second screwed pipe 8b, the second screwed pipe 8b of rotation is with respect to the
One screwed pipe 8a pulls certain length toward certain displacement occurs away from the first installing plate 6a, by elastic string 4a, ensures every
Elastic string 4a is tight.
First crane 6 includes horizontally disposed first installing plate 6a, the first lead 6b and the first rocking bar 6c, the
One lead 6b and the first rocking bar 6c are vertically arranged, and the first installing plate 6a is vertical with elastic string 4a, and the two of the first installing plate 6a
End is provided with the through hole run through for the first lead 6b and the first rocking bar 6c, and the first installing plate 6a is provided with several for all
The cross-drilled hole that elastic string 4a runs through one by one, the first sides of the installing plate 6a away from roller 2 are provided with several to adjust each bullet
The adjustment portion 8 of property string 4a elasticity, adjustment portion 8 can adjust elastic string 4a elasticity, ensure elastic string 4a elasticity
Meet elastic string 4a requirement.
The adjustment portion 8 includes horizontally disposed first screwed pipe 8a and the second screwed pipe 8b, the first screwed pipe 8a and the
One sides of the installing plate 6a away from roller 2 is fixedly connected, and the first screwed pipe 8a axis overlaps with the axis of through hole, the first screw thread
Pipe 8a outside and the second screwed pipe 8b inside thread coordinate, when elastic string 4a pass through the second screwed pipe 8b, stop head 4a1 and
Second screwed pipe 8b is contradicted, and the second screwed pipe 8b of rotation can tense elastic string 4a.
The first installing plate 6a is coordinated by the first sliding block 6h and the first rocking bar 6c transmissions, is set on the outside of the first rocking bar 6c
The external screw thread coordinated with the first sliding block 6h is equipped with, the first rocking bar 6c bottom is provided with first bearing seat 6e, first bearing seat 6e
The bearing being rotatably assorted with the first rocking bar 6c is provided with, the first rocking bar 6c of rotation drives the first installing plate 6a liftings.
The first lead 6b is arranged with the first latch segment 6d, the first latch segment 6d and is arranged on the first installing plate 6a bottom
Portion, the first latch segment 6d are provided with clamping screw, and the first lead 6b base is provided with first flange seat 6f, the first installing plate
6a and the first lead 6b coordinates, and ensures that the first installing plate 6a is stable and rises.
Second crane 7 includes horizontally disposed second installing plate 7a, the second lead 7b and the second rocking bar 7c, the
Two lead 7b and the second rocking bar 7c are vertically arranged, and the second installing plate 7a is vertical with elastic string 4a, and the second installing plate 7a includes
Upper mounting plate 7a1 and lower installation board 7a2, lower installation board 7a2 both ends are provided with for the second lead 7b and the second rocking bar 7c
The through hole run through, several upper semi-circle breach 9 is provided with the top of lower installation board 7a2, if upper mounting plate 7a1 bottom is provided with
Dry lower half circle breach 10, lower installation board 7a2 is bolted with upper mounting plate 7a1, upper semi-circle breach 9 and lower half circle breach
10 cooperatively form several through holes run through for each elastic string 4a one by one, and each upper semi-circle breach 9 is provided with for compressing bullet
Property string 4a one end pressure sword 11, pressure sword 11 and elastic string 4a coordinate close to the breach of the second crane 7, lower installation board 7a2 with it is upper
Installing plate 7a1, which coordinates, fixes elastic string 4a one end jaggy.
The lower installation board 7a2 is coordinated by the second sliding block 7h and the second rocking bar 7c transmissions, is set on the outside of the second rocking bar 7c
The external screw thread coordinated with the second sliding block 7h is equipped with, the second rocking bar 7c bottom is provided with second bearing seat 7e, second bearing seat 7e
The bearing being rotatably assorted with the second rocking bar 7c is provided with, the first rocking bar 6c and the second rocking bar 7c, which coordinate, drives the first installing plate 6a liters
Drop.
The second lead 7b is arranged with the second latch segment 7d, the second latch segment 7d and is arranged on the second installing plate 7a bottom
Portion, the second latch segment 7d are provided with clamping screw, and the second lead 7b base is provided with second flange seat 7f, ensures the second peace
Loading board 7a is stable to be risen.
The controlling switch 12 includes starting switch, shutdown switch and adjustment of rotational speed knob, starting switch, shutdown switch and
Adjustment of rotational speed knob is electrically connected with motor 3, and the rotating speed of motor 3 is adjusted by adjustment of rotational speed knob, makes observation
The observing effect of person is more preferable.
All elastic string 4a area of section successively decreases successively from the first rocking bar 6c to the first lead 6b direction, bullet
Property string 4a thickness be also to influence the factor of fluctuation, elastic string 4a thicknesses are observed according to the different elastic string 4a of several thicknesses
Influence to fluctuation.
The above described is only a preferred embodiment of the present invention, any limit not is made to the technical scope of the present invention
System, therefore any subtle modifications, equivalent variations and modifications that every technical spirit according to the present invention is made to above example,
In the range of still falling within technical scheme.
Claims (10)
- A kind of 1. science popularization device of sound wave visual, it is characterised in that：Including pedestal (1), horizontally disposed roller (2), driving Motor (3), elastic chord group (4) and the lifting support (5) of elastic chord group (4) lifting of driving of roller (2) rotation, the base Seat (1) is provided with the support frame for backing drum (2), and elastic chord group (4) includes several and is being horizontally set on roller (2) just The elastic string (4a) of top, the axis of all elastic string (4a) are located in the same horizontal plane, elastic string (4a) and the axle of roller (2) Line is vertical, and lifting support (5) includes the first crane (6) and the second crane (7) for being arranged on elastic chord group (4) both ends, roller Cylinder (2) is arranged between the first crane (6) and the second crane (7), and each elastic string (4a) is close to the first crane (6) One end, which is provided with, stops head (4a1), and each elastic string (4a) sets jagged, driving electricity close to one end of the second crane (7) The side of machine (3) is provided with controlling switch (12), and motor (3) is electrically connected with controlling switch (12), the cylinder of roller (2) Face is provided with chequered with black and white striped (2a), and striped (2a) is remote to roller (2) close to one end of motor (3) from roller (2) One end from motor (3) extends.
- A kind of 2. science popularization device of sound wave visual according to claim 1, it is characterised in that：First crane (6) include horizontally disposed first installing plate (6a), the first lead (6b) and the first rocking bar (6c), the first lead (6b) and First rocking bar (6c) is vertically arranged, and the first installing plate (6a) is vertical with elastic string (4a), and the both ends of the first installing plate (6a) are equal The through hole run through for the first lead (6b) and the first rocking bar (6c) is provided with, the first installing plate (6a) is provided with several and supplies institute The cross-drilled hole that flexible string (4a) is run through one by one, side of the first installing plate (6a) away from roller (2) are provided with several to adjust The adjustment portion (8) of the elasticity of whole each elastic string (4a).
- A kind of 3. science popularization device of sound wave visual according to claim 2, it is characterised in that：Adjustment portion (8) bag Horizontally disposed first screwed pipe (8a) and the second screwed pipe (8b) are included, the first screwed pipe (8a) and the first installing plate (6a) are remote The side of roller (2) is fixedly connected, and the axis of the first screwed pipe (8a) overlaps with the axis of the through hole on the first installing plate (6a), The outside of first screwed pipe (8a) coordinates with the inside thread of the second screwed pipe (8b).
- A kind of 4. science popularization device of sound wave visual according to claim 3, it is characterised in that：First installing plate (6a) is coordinated by the first sliding block (6h) and the first rocking bar (6c) transmission, and the bottom of the first rocking bar (6c) is provided with first bearing seat (6e), first bearing seat (6e) are provided with the bearing being rotatably assorted with the first rocking bar (6c).
- A kind of 5. science popularization device of sound wave visual according to claim 4, it is characterised in that：First lead (6b) is arranged with the first latch segment (6d), and the first latch segment (6d) is arranged on the first installing plate (6a) bottom, the first latch segment (6d) is provided with clamping screw, and the base of the first lead (6b) is provided with first flange seat (6f).
- A kind of 6. science popularization device of sound wave visual according to claim 1, it is characterised in that：Second crane (7) include horizontally disposed second installing plate (7a), the second lead (7b) and the second rocking bar (7c), the second lead (7b) and Second rocking bar (7c) is vertically arranged, and the second installing plate (7a) is vertical with elastic string (4a), and the second installing plate (7a) includes upper peace Loading board (7a1) and lower installation board (7a2), the both ends of lower installation board (7a2) are provided with shakes for the second lead (7b) and second The through hole that bar (7c) runs through, several upper semi-circle breach (9) are provided with the top of lower installation board (7a2), upper mounting plate (7a1) Bottom is provided with several lower half circle breach (10), and lower installation board (7a2) is bolted with upper mounting plate (7a1), upper half Discount vibram outlet mouth (9) cooperatively forms several through holes run through for each elastic string (4a), Mei Geshang one by one with lower half circle breach (10) Half round cut (9) is provided with for compressing the pressure sword (11) of elastic string (4a) one end, and pressure sword (11) and elastic string (4a) are close to the The breach of two cranes (7) coordinates.
- A kind of 7. science popularization device of sound wave visual according to claim 6, it is characterised in that：The lower installation board (7a2) is coordinated by the second sliding block (7h) and the second rocking bar (7c) transmission, and the bottom of the second rocking bar (7c) is provided with second bearing Seat (7e), second bearing seat (7e) are provided with the bearing being rotatably assorted with the second rocking bar (7c).
- A kind of 8. science popularization device of sound wave visual according to claim 7, it is characterised in that：Second lead (7b) is arranged with the second latch segment (7d), and the second latch segment (7d) is arranged on the second installing plate (7a) bottom, the second latch segment (7d) is provided with clamping screw, and the base of the second lead (7b) is provided with second flange seat (7f).
- A kind of 9. science popularization device of sound wave visual according to claim 1, it is characterised in that：The controlling switch (12) It is electric with driving including starting switch, shutdown switch and adjustment of rotational speed knob, starting switch, shutdown switch and adjustment of rotational speed knob Machine (3) is electrically connected with.
- A kind of 10. science popularization device of sound wave visual according to claim 1, it is characterised in that：All elastic strings The area of section of (4a) successively decreases successively from the first rocking bar (6c) to the direction of the first lead (6b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710641701.7A CN107481594A (en) | 2017-07-31 | 2017-07-31 | A kind of science popularization device of sound wave visual |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710641701.7A CN107481594A (en) | 2017-07-31 | 2017-07-31 | A kind of science popularization device of sound wave visual |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107481594A true CN107481594A (en) | 2017-12-15 |
Family
ID=60598009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710641701.7A Pending CN107481594A (en) | 2017-07-31 | 2017-07-31 | A kind of science popularization device of sound wave visual |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107481594A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111754846A (en) * | 2020-07-29 | 2020-10-09 | 山东科技大学 | Standing wave experimental device and experimental method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202178001U (en) * | 2011-08-17 | 2012-03-28 | 宁波华茂文教股份有限公司 | Visible vibration sound wave device |
| US20130206499A1 (en) * | 2010-07-30 | 2013-08-15 | Tokkyokiki Corporation | Insulator for audio and method for evaluating same |
| CN204667728U (en) * | 2015-05-21 | 2015-09-23 | 江苏华明科教设备有限公司 | A kind of longitudinal wave demonstrator |
| CN205302774U (en) * | 2015-12-18 | 2016-06-08 | 上海锡鼎实业有限公司 | Sound display device |
| CN105795791A (en) * | 2014-12-31 | 2016-07-27 | 哈尔滨意创空间展览展示制作有限公司 | Height-adjustable exhibition stand and height adjusting method |
| CN205513719U (en) * | 2016-02-26 | 2016-08-31 | 河南机电高等专科学校 | Liftable work of art display device with light |
| CN207611530U (en) * | 2017-07-31 | 2018-07-13 | 安徽原创科普技术有限公司 | A kind of science popularization device of sound wave visual |
-
2017
- 2017-07-31 CN CN201710641701.7A patent/CN107481594A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130206499A1 (en) * | 2010-07-30 | 2013-08-15 | Tokkyokiki Corporation | Insulator for audio and method for evaluating same |
| CN202178001U (en) * | 2011-08-17 | 2012-03-28 | 宁波华茂文教股份有限公司 | Visible vibration sound wave device |
| CN105795791A (en) * | 2014-12-31 | 2016-07-27 | 哈尔滨意创空间展览展示制作有限公司 | Height-adjustable exhibition stand and height adjusting method |
| CN204667728U (en) * | 2015-05-21 | 2015-09-23 | 江苏华明科教设备有限公司 | A kind of longitudinal wave demonstrator |
| CN205302774U (en) * | 2015-12-18 | 2016-06-08 | 上海锡鼎实业有限公司 | Sound display device |
| CN205513719U (en) * | 2016-02-26 | 2016-08-31 | 河南机电高等专科学校 | Liftable work of art display device with light |
| CN207611530U (en) * | 2017-07-31 | 2018-07-13 | 安徽原创科普技术有限公司 | A kind of science popularization device of sound wave visual |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111754846A (en) * | 2020-07-29 | 2020-10-09 | 山东科技大学 | Standing wave experimental device and experimental method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107481594A (en) | A kind of science popularization device of sound wave visual | |
| CN207611530U (en) | A kind of science popularization device of sound wave visual | |
| CN207114442U (en) | A kind of diaphragm open defect detection means | |
| CN205241131U (en) | Flexible overspeed device tensioner of hoist rope utensil | |
| CN211260111U (en) | Electromechanical monitoring display device convenient to adjust | |
| CN206747830U (en) | A kind of Welding quality test device | |
| CN211756888U (en) | Spherical graphite grading equipment | |
| CN105776023B (en) | Jacking equipment extreme position testing agency based on rope | |
| CN208288475U (en) | A kind of bathroom automatic sorting device for die castings | |
| CN203467957U (en) | Turnover display shielding box device and turnover shielding desk with same | |
| CN207472530U (en) | A kind of drop test device for handset touch panel | |
| CN206932457U (en) | Accelerator position adjustment mechanism and betatron cask flask | |
| CN205636034U (en) | Glass chopped strand mats production line | |
| CN206835254U (en) | A kind of center monitoring mobile device | |
| CN212302363U (en) | Adjustable computer equipment | |
| CN207218966U (en) | A kind of outdoor use rotary type communication distributing cabinet | |
| CN105150698B (en) | A kind of external film feeding unit of UV ink-jet printers | |
| CN208489845U (en) | A kind of multifunctional internet of things explosion-proof type intercom | |
| CN207935350U (en) | A kind of radial and axial floating type antidetonation lifter | |
| CN207923949U (en) | A kind of steel mill's Automated electronic electric testing equipment | |
| CN206045869U (en) | A kind of addition concentration regulation device of food additive | |
| CN206820299U (en) | Vehicle-mounted device for mobile distribution box | |
| CN207298273U (en) | A kind of bearing holder (housing, cover) conveying hydraulic test adjustable mounting bracket | |
| CN207932957U (en) | Antidetonation lifting device | |
| CN212390063U (en) | Multifunctional data mining teaching device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171215 |