CN213612445U - Ultrasonic transducer with whole-body prestress structure - Google Patents
Ultrasonic transducer with whole-body prestress structure Download PDFInfo
- Publication number
- CN213612445U CN213612445U CN202022296592.XU CN202022296592U CN213612445U CN 213612445 U CN213612445 U CN 213612445U CN 202022296592 U CN202022296592 U CN 202022296592U CN 213612445 U CN213612445 U CN 213612445U
- Authority
- CN
- China
- Prior art keywords
- prestressed
- vibration
- radiation
- prestress
- block
- 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
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
A through-body-prestressed structure ultrasonic transducer comprising: the radiating block comprises a via hole and a vibration radiation end face, wherein the vibration radiation end face is perpendicular to the axis of the via hole, the vibration radiation end face is located at the lower end of the radiating block, and the via hole is located at the upper end of the vibration radiation end face. The piezoelectric ceramic chip comprises a pressing block, a prestress bolt, a prestress thread mechanism, an electrode plate and a piezoelectric ceramic chip. The piezoelectric ceramic piece, the electrode plate and the radiation block are positioned between the pressing block and the prestress thread mechanism. The prestressed bolt penetrates through a through hole in the radiation block and is matched and connected with the prestressed thread mechanism, and the piezoelectric ceramic piece, the electrode plate and the radiation block are sequentially tightly pressed together through the pressing block and the prestressed thread mechanism by the prestressed bolt, and a certain pre-tightening pressure is kept.
Description
Technical Field
The utility model relates to an ultrasonic wave application especially relates to a whole body prestressed structure ultrasonic transducer.
Background
In the field of ultrasound applications, ultrasound transducers are an important component of ultrasound systems, and they are used to convert input electrical energy into ultrasonic mechanical vibrations, and are the vibration excitation source of ultrasound systems.
As shown in fig. 1, the conventional ultrasonic transducer is composed of a radiation block, a pressing block, a prestressed bolt, a piezoelectric ceramic piece and an electrode piece, wherein the piezoelectric ceramic piece and the electrode piece are sequentially laminated between the pressing block and the radiation block by the prestressed bolt, a connecting screw hole is arranged on the radiation end face of the conventional ultrasonic transducer, and the connecting bolt connects a horn of an ultrasonic system to the radiation end face of the radiation block through the connecting screw hole.
Conventional ultrasonic transducer is in the actual process of trying, there is radiating block fatigue fracture problem generally, analysis from structural, conventional ultrasonic transducer prestressing force bolt prestressing force is only used in briquetting and piezoceramics piece, and the radiating block is bearing and is coming from the fixed not equidirectional that leads to of amplitude transformer pretension and piezoceramics piece pretension, equidimension not, inhomogeneous stress, the inside inhomogeneous stress distribution of radiating block can lead to fatigue strength to reduce, thereby make the radiating block fracture easily, seriously influence transducer life.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem how compensate above-mentioned prior art's defect, provide an entire body prestressed construction ultrasonic transducer.
The technical problem of utility model can be solved through following technical scheme:
a through-body-prestressed structure ultrasonic transducer comprising: the radiating block comprises a via hole and a vibration radiation end face, wherein the vibration radiation end face is perpendicular to the axis of the via hole, the vibration radiation end face is located at the lower end of the radiating block, and the via hole is located at the upper end of the vibration radiation end face. The piezoelectric ceramic chip comprises a pressing block, a prestress bolt, a prestress thread mechanism, an electrode plate and a piezoelectric ceramic chip.
The piezoelectric ceramic piece, the electrode plate and the radiation block are positioned between the pressing block and the prestress thread mechanism.
The prestressed bolt penetrates through a through hole in the radiation block and is matched and connected with the prestressed thread mechanism, and the piezoelectric ceramic piece, the electrode plate and the radiation block are sequentially tightly pressed together through the pressing block and the prestressed thread mechanism by the prestressed bolt, and a certain pre-tightening pressure is kept.
Furthermore, the prestressed bolt is matched with the prestressed thread mechanism to generate prestressed pressure, and a length is left after the prestressed bolt penetrates through the vibration radiation end face of the radiation block and is used for connecting the ultrasonic amplitude transformer.
Furthermore, the prestress thread mechanism and the radiation block are of an integrated structure, and the prestress thread mechanism is a prestress thread hole located on the radiation block.
Furthermore, the prestressed wire hole is coaxial with the via hole, one end of the prestressed wire hole is connected to the vibration radiation end face, the other end of the prestressed wire hole is connected to the via hole, the prestressed wire hole is located between the vibration radiation end face and the via hole, threads of the prestressed wire hole are correspondingly matched with threads of the prestressed bolt, and the prestressed wire hole is coaxially connected with the prestressed bolt and matched with the prestressed bolt to generate prestressed pressure.
Furthermore, the prestress thread mechanism and the radiation block are of a split structure, and the prestress thread mechanism is a prestress gasket.
Furthermore, the prestressed gasket is provided with two vibration coupling surfaces and a prestressed wire hole, the two vibration coupling surfaces are parallel to each other, and the prestressed wire hole vertically penetrates through the two vibration coupling surfaces.
Furthermore, the prestressed wire hole coaxially corresponds to the via hole of the radiation block, one of the vibration coupling surfaces is closely connected with the vibration radiation end surface of the radiation block, the other vibration coupling surface is used as a vibration output end surface for connecting an ultrasonic amplitude transformer, threads of the prestressed wire hole are correspondingly matched with threads of the prestressed bolt, and the prestressed wire hole is coaxially connected with the prestressed bolt and is matched with the prestressed bolt to generate prestressed pressure.
Further, the material of the prestressed gasket is a high-hardness wear-resistant material.
Furthermore, the radiation block is made of a non-metal material capable of insulating heat, so that the working environment temperature of the transducer can be increased.
Furthermore, the number of the piezoelectric ceramic pieces and the number of the electrode plates are a plurality, and the piezoelectric ceramic pieces and the electrode plates are sequentially laminated together.
Compared with the prior art, the beneficial effect that this patent reaches is:
including the radiating block, the utility model discloses install the whole body and be applyed an even pretension compressive stress, pretension compressive stress can make the antifatigue intensity of material improve, uses the utility model discloses the difficult fracture of ultrasonic transducer radiating block of device mechanism technique, transducer long service life.
The utility model discloses when the prestressing force bolt of device is used for exerting prestressing force, still be used for replacing ultrasonic wave amplitude transformer connecting bolt to connect the ultrasonic wave amplitude transformer, use the utility model discloses the transducer of device mechanism technique is connected ultrasonic wave amplitude transformer and is operated more simply.
The utility model discloses the prestressing force gasket of device can choose for use high rigidity wear-resisting material, uses the utility model discloses when the ultrasonic wave becomes the width of cloth pole is connected to the transducer of device mechanism technique, the difficult wearing and tearing of vibration output terminal surface can improve transducer life to the operating mode of often dismantling ultrasonic wave becomes the width of cloth pole.
The utility model discloses pretension compressive stress is applied to the radiation block of device, can choose for use thermal-insulated non-metallic material preparation to can improve the operational environment temperature of transducer, the suitability is wider, and is stronger.
The device of the utility model is simple in structure, low in price, suitable for extensive popularization.
Drawings
FIG. 1 is a block diagram of a conventional ultrasonic transducer;
FIG. 2 is an overall structure diagram of embodiment 1 of the present invention;
fig. 3 is a structural diagram of a radiation block in embodiment 1 of the present invention;
FIG. 4 is a structural view of the ultrasonic horn according to embodiment 1 of the present invention;
fig. 5 is an overall structure diagram of embodiment 2 of the present invention;
fig. 6 is a structural diagram of a radiation block in embodiment 2 of the present invention;
fig. 7 is a structural view of a prestressed shim according to embodiment 2 of the present invention;
fig. 8 is a structural view of the ultrasonic horn according to embodiment 2 of the present invention.
Reference numerals in the figures
The device comprises a radiation block 1, a through hole 1a, a vibration radiation end face 1b, a pressing block 2, a prestressed bolt 3, a prestressed wire hole 4, a piezoelectric ceramic piece 5, an electrode plate 6, a prestressed gasket 7, a vibration coupling face 7a, an amplitude transformer 8 and a connecting wire 9.
Detailed Description
The present invention will be further described below based on preferred embodiments with reference to the accompanying drawings.
In addition, for convenience of understanding, various components on the drawings are enlarged, thickened or reduced in thickness, but the protection scope of the invention is not limited by the method.
The singular forms "a", "an", and "the" include plural referents and vice versa
In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship that the products of the present invention are usually placed when using, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present invention. Furthermore, in the description of the present invention, the terms first, second, etc. are used herein to distinguish between different elements, but these should not be limited by the order of manufacture or construed to indicate or imply relative importance, and their names may differ between the detailed description of the invention and the claims.
The words used in this specification are words of description used in describing embodiments of the invention, but are not intended to limit the invention. It is also to be understood that, unless otherwise expressly stated or limited, the terms "disposed," "connected," and "connected" are intended to be open-ended, i.e., may be fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The above-mentioned meaning belonging to the present invention is specifically understood by those skilled in the art.
Referring to fig. 2 to 5, an ultrasonic transducer with a whole-body prestressed structure includes a radiation block 1, a pressing block 2, a prestressed bolt 3, a prestressed screw mechanism, an electrode plate 6, and a piezoelectric ceramic plate 5. The piezoelectric ceramic piece 5, the electrode plate 6 and the radiation block 1 are positioned between the pressing block 2 and the prestress thread mechanism.
Specifically, radiation block 1 is last to include via hole 1a and vibration radiation terminal surface 1b, vibration radiation terminal surface 1b with the axis of via hole 1a is perpendicular, vibration radiation terminal surface 1b is located the lower extreme of radiation block 1, via hole 1a is located the upper end of vibration radiation terminal surface 1 b.
Specifically, the prestressed bolt 3 penetrates through a through hole 1a in the radiation block 1 to be matched and connected with the prestressed threaded mechanism, the prestressed bolt 3 sequentially presses the piezoelectric ceramic piece 5, the electrode piece 6 and the radiation block 1 together through the pressing block 2 and the prestressed threaded mechanism and keeps certain pretightening pressure, at the moment, the pretightening pressure simultaneously acts on the pressing block 2, the piezoelectric ceramic piece 5, the electrode piece 6 and the radiation block 1, the whole device including the radiation block 1 is applied with pretightening pressure stress, the prestressed bolt 3 acts on the whole device with the prestress, the action directions of forces borne by the radiation block are consistent, the radiation block 1 is not easy to break, and the service life of the transducer is prolonged.
The prestressed bolt 3 is matched with the prestressed thread mechanism to generate prestressed pressure, and a length of the prestressed bolt 3 is left after penetrating through the vibration radiation end face 1b of the radiation block 1 and is used for connecting an ultrasonic amplitude transformer 8.
The number of the piezoelectric ceramic pieces 5 and the number of the electrode pieces 6 are not limited, and the piezoelectric ceramic pieces 5 and the electrode pieces 6 can be laminated together in sequence.
In this embodiment, the radiation block 1 is made of a heat-insulating non-metallic material, so that the working environment temperature of the transducer can be increased.
The utility model discloses in, prestressing force screw mechanism can formula structure as an organic whole or split type structure with radiation block 1, and the following is specifically explained through the embodiment.
Example 1
Referring to fig. 2 to 4, in the present embodiment, the prestressed screw mechanism and the radiation block 1 are integrated into a single structure.
When the prestress thread mechanism and the radiation block 1 are in an integrated structure, the prestress thread mechanism is a prestress thread hole 4 on the radiation block 1.
The prestressed wire hole 4 is coaxial with the via hole 1a, one end of the prestressed wire hole 4 is connected to the vibration radiation end face 1b, the other end of the prestressed wire hole is connected to the via hole 1a, the prestressed wire hole 4 is located between the vibration radiation end face 1b and the via hole 1a, threads of the prestressed wire hole 4 are correspondingly matched with threads of the prestressed bolt 3, and the prestressed wire hole 4 is coaxially connected with the prestressed bolt 3 and matched with the prestressed bolt 3 to generate prestressed compression stress.
At this time, the prestressed bolt 3 is screwed with the prestressed wire hole 4. The prestressed bolt 3 passes through a through hole 1a on the radiation block 1, the prestressed bolt 3 sequentially presses the piezoelectric ceramic piece 5, the electrode piece 6 and the radiation block 1 together through the pressing block 2 and the prestressed wire hole 4 and keeps certain pretightening pressure, at the moment, the pretightening pressure simultaneously acts on the pressing block 2, the piezoelectric ceramic piece 5, the electrode piece 6 and the radiation block 1, the whole device with the radiation block 1 inside is applied with pretightening pressure stress, the prestress of the prestressed bolt 3 acts on the whole device, the force action directions borne by the radiation block are consistent, the radiation block 1 is not easy to break, and the service life of the transducer is prolonged.
The prestressed bolt 3 is matched with the prestressed wire hole 4 to generate prestressed pressure, and a length is left after the prestressed bolt 3 penetrates through the vibration radiation end face 1b of the radiation block 1 and is used for connecting the ultrasonic amplitude transformer 8.
Example 2
Referring to fig. 5 to 8, in the present embodiment, the prestressed screw mechanism and the radiation block 1 are in a split structure.
When the prestress thread mechanism and the radiation block 1 are in a split structure, the prestress thread mechanism is a prestress gasket 7.
The prestressed gasket 7 is provided with two vibration coupling surfaces 7a and a prestressed wire hole 4, the two vibration coupling surfaces 7a are parallel to each other, and the prestressed wire hole 4 vertically penetrates through the two vibration coupling surfaces 7 a.
During assembly, the prestressed wire hole 4 coaxially corresponds to the through hole 1a of the radiation block 1, one of the vibration coupling surfaces 7a is closely connected with the vibration radiation end surface 1b of the radiation block 1, the other vibration coupling surface is used as a vibration output end surface and is connected with an ultrasonic amplitude transformer 8, threads of the prestressed wire hole 4 are correspondingly matched with threads of the prestressed bolt 3, and the prestressed wire hole 4 is coaxially connected with the prestressed bolt 3 and is matched with the prestressed bolt 3 to generate prestressed pressure.
At the moment, the prestressed bolt 3 is in threaded connection with the prestressed gasket 7, the prestressed bolt 3 penetrates through a through hole 1a in the radiation block 1, the prestressed bolt 3 sequentially presses the piezoelectric ceramic piece 5, the electrode piece 6 and the radiation block 1 together through the pressing block 2 and the prestressed threaded mechanism, certain pretightening pressure is kept, at the moment, the pretightening pressure simultaneously acts on the pressing block 2, the piezoelectric ceramic piece 5, the electrode piece 6 and the radiation block 1, the whole device including the radiation block 1 is applied with pretightening pressure, the prestress of the prestressed bolt 3 acts on the whole device, the force action directions borne by the radiation block are consistent, the radiation block 1 is not easy to break, and the service life of the transducer is prolonged.
The prestressed bolt 3 is matched with the prestressed gasket 7 to generate prestressed pressure, and a length is left after the prestressed bolt 3 penetrates through the vibration radiation end face 1b of the radiation block 1 and is used for connecting an ultrasonic amplitude transformer 8.
In an embodiment, the material of the pre-stressed pad 7 is a high-hardness wear-resistant material to improve the service life of the transducer.
The detailed description of the embodiments of the present invention has been presented, and it will be apparent to those skilled in the art that the present invention can be modified and modified without departing from the principles of the present invention, and the modifications and modifications also belong to the protection scope of the claims of the present invention.
Claims (10)
1. A through-body pre-stressed structure ultrasonic transducer, comprising:
the radiating block (1) comprises a through hole (1a) and a vibration radiating end face (1b), the vibration radiating end face (1b) is perpendicular to the axis of the through hole (1a), the vibration radiating end face (1b) is located at the lower end of the radiating block (1), and the through hole (1a) is located at the upper end of the vibration radiating end face (1 b);
the device comprises a pressing block (2), a prestressed bolt (3), a prestressed thread mechanism, an electrode plate (6) and a piezoelectric ceramic piece (5);
the piezoelectric ceramic piece (5), the electrode plate (6) and the radiation block (1) are positioned between the pressing block (2) and the prestress thread mechanism; the prestressed bolt (3) penetrates through a through hole (1a) in the radiation block (1) and is matched and connected with the prestressed thread mechanism, the piezoelectric ceramic piece (5), the electrode piece (6) and the radiation block (1) are sequentially pressed together through the pressing block (2) and the prestressed thread mechanism by the prestressed bolt (3), and certain pre-tightening pressure is kept.
2. The ultrasonic transducer with the whole body prestress structure according to claim 1, wherein:
the prestressed bolt (3) is matched with the prestressed thread mechanism to generate prestressed pressure, and a length is left after the prestressed bolt (3) penetrates through the vibration radiation end face (1b) of the radiation block (1) and is used for connecting the ultrasonic amplitude transformer (8).
3. The ultrasonic transducer with the whole body prestress structure according to claim 1, wherein:
the prestress thread mechanism and the radiation block (1) are of an integrated structure, and the prestress thread mechanism is a prestress thread hole (4) located on the radiation block (1).
4. The ultrasonic transducer with the whole body prestress structure according to claim 3, wherein:
prestressing force silk hole (4) with via hole (1a) are coaxial, prestressing force silk hole (4) one end is connected on vibration radiation terminal surface (1b), and the other end is connected on via hole (1a), prestressing force silk hole (4) are located vibration radiation terminal surface (1b) with between via hole (1a), the screw thread of prestressing force silk hole (4) with the corresponding cooperation of screw thread of prestressing force bolt (3), prestressing force silk hole (4) coaxial coupling prestressing force bolt (3) and cooperation prestressing force bolt (3) produce prestressing pressure stress.
5. The ultrasonic transducer with the whole body prestress structure according to claim 1, wherein:
the prestress thread mechanism and the radiation block (1) are of a split structure, and the prestress thread mechanism is a prestress gasket (7).
6. The all-body prestressed structure ultrasonic transducer according to claim 5, wherein:
the prestressed gasket (7) is provided with two vibration coupling surfaces (7a) and a prestressed wire hole (4), the two vibration coupling surfaces (7a) are parallel to each other, and the prestressed wire hole (4) vertically penetrates through the two vibration coupling surfaces (7 a).
7. The all-body prestressed structure ultrasonic transducer according to claim 6, wherein:
the device is characterized in that the prestressed wire holes (4) coaxially correspond to the through holes (1a) of the radiation block (1), one vibration coupling surface (7a) is closely connected with the vibration radiation end surface (1b) of the radiation block (1), the other vibration coupling surface is used as a vibration output end surface and is connected with an ultrasonic amplitude transformer (8), the threads of the prestressed wire holes (4) are correspondingly matched with the threads of the prestressed bolts (3), and the prestressed wire holes (4) are coaxially connected with the prestressed bolts (3) and are matched with the prestressed bolts (3) to generate prestressed pressure.
8. The all-body prestressed structure ultrasonic transducer according to claim 5, wherein:
the prestressed gasket (7) is made of high-hardness wear-resistant material.
9. The ultrasonic transducer with the whole body prestress structure according to claim 1, wherein:
the radiation block (1) is made of a non-metal material capable of insulating heat, so that the working environment temperature of the transducer can be increased.
10. The ultrasonic transducer with the whole body prestress structure according to claim 1, wherein:
the number of the piezoelectric ceramic pieces (5) and the number of the electrode pieces (6) are a plurality of, and the piezoelectric ceramic pieces (5) and the electrode pieces (6) are sequentially laminated together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022296592.XU CN213612445U (en) | 2020-10-15 | 2020-10-15 | Ultrasonic transducer with whole-body prestress structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022296592.XU CN213612445U (en) | 2020-10-15 | 2020-10-15 | Ultrasonic transducer with whole-body prestress structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213612445U true CN213612445U (en) | 2021-07-06 |
Family
ID=76662109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022296592.XU Active CN213612445U (en) | 2020-10-15 | 2020-10-15 | Ultrasonic transducer with whole-body prestress structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213612445U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571630A (en) * | 2021-07-22 | 2021-10-29 | 济南大学 | Fiber winding method capable of quantitatively regulating and controlling surface prestress of piezoelectric ceramic round tube |
-
2020
- 2020-10-15 CN CN202022296592.XU patent/CN213612445U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571630A (en) * | 2021-07-22 | 2021-10-29 | 济南大学 | Fiber winding method capable of quantitatively regulating and controlling surface prestress of piezoelectric ceramic round tube |
| CN113571630B (en) * | 2021-07-22 | 2023-08-08 | 济南大学 | Fiber winding method capable of quantitatively regulating and controlling surface prestress of piezoelectric ceramic round tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6491708B2 (en) | Ultrasonic transducer with improved compressive loading | |
| CN101777506B (en) | Complex frequency sandwich structure ultrasonic transducer | |
| CN101259465B (en) | Bending mode conversion type ultrasound wave torsional vibration energy converter | |
| CN109883664A (en) | Bolt for wind power generation real time monitoring and diagnostic system | |
| CN213612445U (en) | Ultrasonic transducer with whole-body prestress structure | |
| CN102071927B (en) | Piezoelectric ceramic electro-acoustic transducer with cylindrical ring structure | |
| CN112934650A (en) | Design method of large-amplitude longitudinal-torsional ultrasonic composite vibration amplitude transformer | |
| CN106552760B (en) | Ultrasonic transducer | |
| CN110355084B (en) | Axial ultrasonic transducer | |
| CN205341214U (en) | Two excitation piezoelectricity ultrasonic transducer | |
| CN100565954C (en) | Multi-layer gas matrix piezoelectric composite transducer | |
| CN107028643B (en) | Ultrasonic transducer | |
| CN112304348A (en) | Stacked piezoelectric driving device with front-mounted fastening mechanism for vibration limit switch | |
| CN110404752B (en) | Industrial high-power multidirectional amplitude regulation and control ultrasonic vibration device | |
| CN201249168Y (en) | Impedance conversion type electro-acoustic transducer for an ultrasonic welding machine | |
| CN110102459A (en) | A kind of novel high-power ultrasonic transducer | |
| CN115781615A (en) | Assembly type resonance beam of large-diameter steel cylinder vibration hammer set and assembly method thereof | |
| CN209681784U (en) | Apply the non-metallic material ultrasonic tool head that prestressing force improves fatigue resistance | |
| CN102205309B (en) | Hydraulic pressurizing device for high-power radial compound ultrasonic tube | |
| CN201227294Y (en) | Medical ultrasonic transducing device | |
| CN204449268U (en) | A kind of ultrasonic wave added upper die structure with cooling device | |
| CN210509886U (en) | Pin bolt | |
| CN113707117A (en) | Diaphragm prestress adjusting device for sound wave emission | |
| CN201163819Y (en) | Dynamic prestress energy converter | |
| CN109719575A (en) | To apply the non-metallic material ultrasonic tool head that prestressing force improves fatigue resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |