CN210534078U - Ultrasonic excitation device and system - Google Patents

Abstract

The application provides an ultrasonic excitation device and system, and belongs to the technical field of ultrasonic detection. The ultrasonic excitation device comprises an ultrasonic generator, a first ultrasonic excitation head, a second ultrasonic excitation head and a workbench. The first ultrasonic excitation head is electrically connected with the ultrasonic generator, the first ultrasonic excitation head is used for detecting a test piece, and the ultrasonic generator can provide ultrasonic waves of a first frequency for the first ultrasonic excitation head. The second ultrasonic excitation head is electrically connected with the ultrasonic generator, the second ultrasonic excitation head is used for detecting the test piece, and the ultrasonic generator can provide ultrasonic waves of a second frequency for the second ultrasonic excitation head. The workbench is used for stabilizing the first ultrasonic excitation head, the second ultrasonic excitation head and the test piece. Wherein the first frequency is greater than the second frequency. Under the common excitation of the first ultrasonic excitation head and the second ultrasonic excitation head, the standing wave resonance phenomenon can be avoided as much as possible in the test piece excitation process, and the accuracy and the efficiency of the test piece defect detection are improved.

Description

Ultrasonic excitation device and system

Technical Field

The application relates to the technical field of ultrasonic detection, in particular to an ultrasonic excitation device and system.

Background

In the field of active infrared detection of a tested piece, an ultrasonic excitation device is adopted as an external heating source to realize selective heating of a defect part in the tested piece, when ultrasonic vibration excitation is transmitted to the tested piece, the defect part can generate heat under the action of collision-friction, the temperature change in a heat map is obvious, the non-defect part is not influenced by the action, and the temperature basically cannot change.

In the existing ultrasonic excitation device, a fixed high-temperature area is easily formed on the surface of a test piece in the excitation process, so that some normal areas are judged to have defects, and the defect detection of the test piece is inaccurate.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an ultrasonic excitation device and system to solve the problem of inaccurate defect detection of a test piece.

In a first aspect, an embodiment of the present application provides an ultrasonic excitation device, which includes an ultrasonic generator, a first ultrasonic excitation head, a second ultrasonic excitation head, and a worktable;

the first ultrasonic excitation head is electrically connected with the ultrasonic generator, the first ultrasonic excitation head is used for detecting a test piece, and the ultrasonic generator can provide ultrasonic waves with a first frequency for the first ultrasonic excitation head;

the second ultrasonic excitation head is electrically connected with the ultrasonic generator, the second ultrasonic excitation head is used for detecting the test piece, and the ultrasonic generator can provide ultrasonic waves with a second frequency for the second ultrasonic excitation head;

the workbench is used for stabilizing the first ultrasonic excitation head, the second ultrasonic excitation head and the test piece;

wherein the first frequency is greater than the second frequency.

The inventor finds that: the existing ultrasonic excitation device is single-frequency ultrasonic excitation, standing wave resonance phenomenon is easy to occur in a test piece in the excitation process, so that a fixed high-temperature area is formed on the surface of a component, and some normal areas are judged to have defects. In addition, if the single-frequency ultrasonic excitation energy is relatively small, the ultrasonic excitation time needs to be prolonged or the ultrasonic excitation amplitude needs to be increased, which is likely to cause secondary damage to the test piece.

Among the above-mentioned technical scheme, the effect of workstation is first ultrasonic excitation head, second ultrasonic excitation head and test piece stabilize, is examining the test piece promptly, and first ultrasonic excitation head, second ultrasonic excitation head and test piece three all stabilize on the workstation, and first ultrasonic excitation head and second ultrasonic wave carry out the excitation vibration to the test piece. The ultrasonic excitation device comprises a first ultrasonic excitation head and a second ultrasonic excitation head, wherein the first ultrasonic excitation head and the second ultrasonic excitation head are respectively arranged at the two ends of the first ultrasonic excitation head, the second frequency of ultrasonic waves provided by the ultrasonic generator for the first ultrasonic excitation head is greater than that of ultrasonic waves provided by the ultrasonic generator for the second ultrasonic excitation head, namely, the frequency of the ultrasonic wave emitted by the first ultrasonic excitation head and the frequency of the ultrasonic wave emitted by the second ultrasonic excitation head and used for exciting the test piece are different, standing wave resonance can be avoided as far as possible in the process of exciting the test piece under the common excitation of the first ultrasonic excitation head and the second ultrasonic excitation head, and the accuracy and the efficiency of detecting the defects of the test piece are ensured. In addition, the dual-source excitation test piece is adopted, so that the response waveform of the tested piece is easier to generate the acoustic chaos phenomenon, the temperature of the defect part of the test piece is quickly raised, the excitation time and the power consumption are reduced, and the secondary damage to the test piece is avoided as far as possible.

In addition, the ultrasonic excitation device of the embodiment of the present application has the following additional technical features:

in some embodiments of the present application, the table comprises a first holder and a second holder;

the first clamping frame is used for clamping the first ultrasonic excitation head and the second ultrasonic excitation head;

the second clamping frame is used for clamping the test piece, and the first clamping frame is movably arranged on the second clamping frame along a first preset direction.

Among the above-mentioned technical scheme, a first holding frame for centre gripping first ultrasonic excitation head and second ultrasonic excitation head can remove along first predetermined direction relative to the second holding frame, the test piece is by the centre gripping on the second holding frame, and first ultrasonic excitation head and second ultrasonic excitation head are by the centre gripping back on first holding frame, first holding frame removes along first predetermined direction relative to the second holding frame, then can change the relative position of first ultrasonic excitation head and second ultrasonic excitation head and test piece, can encourage a plurality of positions of test piece, in order to increase the excitation detection range to the test piece.

In some embodiments of the present application, the first clamping frame comprises a frame body, a first clamping member and a second clamping member;

the frame body is movably arranged on the second clamping frame along the first preset direction;

the first clamping piece is used for clamping the first ultrasonic excitation head and connected to the frame body;

the second clamping piece is used for clamping the second ultrasonic excitation head, the second clamping piece is connected to the frame body, a distance exists between the second clamping piece and the first clamping piece in a second preset direction, and the second preset direction is perpendicular to the first preset direction.

Among the above-mentioned technical scheme, there is the distance in the second preset direction perpendicular to first preset direction in the second holder that is used for centre gripping second ultrasonic excitation head and the first holder that is used for centre gripping first ultrasonic excitation head, and when the support body removed along first preset direction, the motion path of first ultrasonic excitation head and second ultrasonic excitation head can not coincide, avoids the repeated excitation.

In some embodiments of the present application, the first clamp comprises a first C-shaped portion for clamping the first ultrasonic excitation head; and/or

The second holder includes a second C-shaped portion for holding the second ultrasonic excitation head.

Among the above-mentioned technical scheme, first holder is including the first C shape portion that is used for the first ultrasonic excitation head of centre gripping, and first C shape portion can conveniently realize the centre gripping and the dismantlement to first ultrasonic excitation head.

The second clamping piece comprises a second C-shaped part used for clamping the second ultrasonic excitation head, and the second C-shaped part can conveniently realize clamping and dismounting of the second ultrasonic excitation head.

In some embodiments of the present application, the rack comprises a first rack and a second rack;

the first frame body is movably arranged on the second clamping frame along the first preset direction, and the first clamping piece is connected to the first frame body;

the second frame body is movably arranged on the first frame body along the second preset direction, and the second clamping piece is connected to the second frame body.

Among the above-mentioned technical scheme, the second support body can be relative first support body and predetermine the direction removal along the second, predetermine the direction removal through the second support body and can change the distance of first holder and second holder along the second to change the distance of first ultrasonic excitation head and second ultrasonic excitation head, thereby adjust the distance of first ultrasonic excitation head and second ultrasonic excitation head according to particular case.

In some embodiments of the present application, the frame body further comprises a bolt, a nut, and an elastic member;

a first guide hole is formed in the first frame body, a second guide hole is formed in the second frame body, and the bolt penetrates through the first guide hole and the second guide hole;

the nut is screwed on the bolt;

the elastic piece is positioned between the first frame body and the second frame body, and the elastic piece is sleeved on the outer side of the bolt;

when the nut is screwed down, the elastic piece can be compressed by the first frame body and the second frame body.

Among the above-mentioned technical scheme, the first guiding hole of first support body and the second guiding hole of second support body are worn to locate by the bolt, and the bolt has certain guide effect to first support body and second support body. Screwing the nut, and enabling the first frame body and the second frame body to relatively approach and compress the elastic piece; the nut is unscrewed, and the first frame body and the second frame body are relatively far away under the action of the elastic piece. The relative position of the first support body and the second support body can be adjusted conveniently and quickly by screwing or unscrewing the nut.

In some embodiments of the present application, the second clamping frame comprises a first support frame, a second support frame, a third clamping member, and a fourth clamping member;

the second support frame and the first support frame are arranged at intervals in a third preset direction;

the third clamping piece is connected to the first support frame and used for clamping the first end part of the test piece;

the fourth clamping piece is connected to the second supporting frame and used for clamping a second end part of the test piece, which is opposite to the first end part;

and the third preset direction is consistent with or vertical to the first preset direction.

Among the above-mentioned technical scheme, when stabilizing the test piece, the third holder on the first support frame can carry out the centre gripping to the first end of test piece, and the fourth holder on the second support frame can carry out the centre gripping to the second end relative with the first end of test piece, guarantees that the test piece has fine stability after firm on the second holding frame.

In some embodiments of the present application, the third predetermined direction is coincident with the first predetermined direction;

the second clamping frame further comprises a guide rod, the first support frame is connected with the second support frame through the guide rod, and the first clamping frame is movably arranged on the guide rod along the first preset direction.

In the technical scheme, the first support frame is connected with the second support frame through the guide rod, and the guide rod can be used for the first clamping frame to move along a first preset direction, so that the first clamping frame has good stability in the moving process.

In some embodiments of the present application, the third clamping member includes a first connection portion, a first deformation portion, and a second deformation portion connected in sequence; the first connecting part is connected to the first support frame, and the first deformation part and the second deformation part are used for clamping the test piece in a matched manner; the first support frame is provided with a first locking piece and a second locking piece, and the first locking piece is used for enabling the first deformation part to deform relative to the first connecting part in the direction close to the second deformation part; the second locking piece is used for enabling the second deformation part to deform relative to the first connecting part in the direction close to the first deformation part; and/or

The fourth clamping piece comprises a second connecting part, a third deformation part and a fourth deformation part which are sequentially connected; the second connecting part is connected to the second support frame, and the third deformation part and the fourth deformation part are used for clamping the test piece in a matched manner; a third locking piece and a fourth locking piece are arranged on the second support frame, and the third locking piece is used for enabling the third deformation part to deform towards the direction close to the fourth deformation part relative to the second connecting part; the second locking piece is used for enabling the fourth deformation portion to deform towards the direction close to the third deformation portion relative to the second connecting portion.

Among the above-mentioned technical scheme, can make first deformation portion and second deformation portion take place to warp through first retaining member and second retaining member respectively to conveniently centre gripping test piece. The third deformation part and the fourth deformation part can be deformed respectively through the third locking piece and the fourth locking piece so as to conveniently clamp the test piece.

In a second aspect, the present application provides an ultrasonic excitation system, which includes a display device and the ultrasonic excitation device, where the display device is electrically connected to the ultrasonic generator.

In the technical scheme, the first ultrasonic excitation head and the second ultrasonic excitation head in the ultrasonic excitation device in the ultrasonic excitation system can jointly excite the test piece, so that the standing wave resonance phenomenon is avoided as much as possible in the test piece excitation process, and the accuracy and the efficiency of the defect detection of the test piece are ensured. The display device is electrically connected with the ultrasonic generator, and parameters can be displayed more visually and more accurately through the display device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of an ultrasonic excitation device provided in an embodiment of the present application;

FIG. 2 is a schematic view of the workbench of FIG. 1 at a first perspective;

FIG. 3 is a schematic view of the workbench shown in FIG. 1 at a second viewing angle;

FIG. 4 is a schematic structural view of the first holder shown in FIG. 2;

FIG. 5 is a schematic structural diagram of a workbench according to another embodiment of the present disclosure;

FIG. 6 is a schematic structural view of the second holder shown in FIG. 2;

FIG. 7 is a schematic structural view of the first ultrasonic excitation head shown in FIG. 1;

FIG. 8 is a schematic diagram of the ultrasonic generator shown in FIG. 1;

fig. 9 is a schematic structural diagram of an ultrasonic excitation system according to an embodiment of the present application.

Icon: 100-ultrasonic excitation means; 10-an ultrasonic generator; 20-a first ultrasound excitation head; 21-a piezoelectric ceramic workpiece; 22-an amplitude modulator; 221-an annular projection; 23-a tool bar; 30-a second ultrasound excitation head; 40-a workbench; 41-a first holding frame; 411-frame body; 4111-a first frame body; 41111-a first guide hole; 41112-a first connecting rod; 41113-a first connection plate; 41115 — a first via; 4112-a second frame; 41121-a second guide hole; 41122-a second connecting rod; 41123-a second connection plate; 41124 — a second via; 4113-bolt; 4114-nut; 4115-a resilient member; 412-a first clamp; 4121-first C-shaped portion; 4122-a first stem portion; 413-a second clamp; 4131-a second C-shaped portion; 4132-a second shaft portion; 42-a second holding frame; 421-a first support frame; 4211-a first base plate; 4212-a first riser; 4213-a second riser; 4214-a first roller; 422-a second support frame; 4221-a second base plate; 4222-a third riser; 4223-a fourth riser; 4224-a second roller; 423-third clamp; 4231-a first connection; 4232-a first deformation; 4233-a second deformation; 424-fourth clamp; 4241-a second connecting part; 4242-third deformation; 4243-fourth deformation; 425-a guide bar; 426-a first locking member; 427-a second locking member; 428-third locking member; 429-a fourth locking member; 430-a fifth locking member; 431-a sixth locking member; 44-a sleeve; 200-a test piece; 300-ultrasonic excitation system; 310-a display device; a-a first preset direction; b-a second preset direction; c-a third preset direction.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Examples

As shown in fig. 1, an ultrasonic excitation device 100 according to an embodiment of the first aspect of the present application includes an ultrasonic generator 10, a first ultrasonic excitation head 20, a second ultrasonic excitation head 30, and a table 40. The first ultrasonic excitation head 20 is electrically connected to the ultrasonic generator 10, the first ultrasonic excitation head 20 is used for inspecting the test piece 200, and the ultrasonic generator 10 can provide the first ultrasonic excitation head 20 with ultrasonic waves of a first frequency. The second ultrasonic excitation head 30 is electrically connected to the ultrasonic generator 10, the second ultrasonic excitation head 30 is used for inspecting the test piece 200, and the ultrasonic generator 10 can provide the second ultrasonic excitation head 30 with ultrasonic waves of a second frequency. The table 40 serves to stabilize the first ultrasonic excitation head 20, the second ultrasonic excitation head 30 and the test piece 200. Wherein the first frequency is greater than the second frequency.

The ultrasonic excitation device 100 includes two ultrasonic excitation heads, which are respectively a first ultrasonic excitation head 20 and a second ultrasonic excitation head 30, wherein the second frequency of the ultrasonic wave provided by the ultrasonic generator 10 for the first ultrasonic excitation head 20 is greater than the second frequency of the ultrasonic wave provided by the ultrasonic generator 10 for the second ultrasonic excitation head 30, that is, the frequency of the ultrasonic wave emitted by the first ultrasonic excitation head 20 for exciting the test piece 200 is different from the frequency of the ultrasonic wave emitted by the second ultrasonic excitation head 30 for exciting the test piece 200, so that a standing wave resonance phenomenon can be avoided as much as possible in the process of exciting the test piece 200 under the common excitation of the first ultrasonic excitation head and the second ultrasonic excitation head 30, and the accuracy and efficiency of defect detection on the test piece 200 are ensured. In addition, the dual-source excitation test piece 200 is adopted, so that the acoustic chaos phenomenon is easier to generate in the response waveform of the test piece 200, the acoustic chaos phenomenon is beneficial to the collision-friction-heating process of the defect part of the test piece 200, the temperature of the defect part of the test piece 200 is rapidly increased, the excitation time and the power consumption are reduced, and the secondary damage to the test piece 200 is avoided as far as possible. In addition, the ultrasonic excitation device 100 has the advantages of small overall size, portability, low cost and convenient maintenance.

Illustratively, the test piece 200 is a plate-shaped composite material. After the first ultrasonic excitation head 20 and the second ultrasonic excitation head 30 contact the test piece 200 and excite and vibrate the test piece 200, if a defect exists in the test piece 200 and the temperature of the defective part of the test piece 200 is high, the defective part of the test piece 200 can be judged by an infrared temperature detection device.

The ultrasonic generator 10 is configured to generate two different frequencies of ultrasonic waves, and provide the two different frequencies of ultrasonic waves to the first ultrasonic excitation head 20 and the second ultrasonic excitation head 30, respectively, where the two different frequencies of ultrasonic waves are the first frequency of ultrasonic waves and the second frequency of ultrasonic waves. In this embodiment, the ultrasonic waves of two frequencies generated by the ultrasonic generator 10 are fixed frequencies, for example, the first frequency is 40KHz, and the second frequency is 20 KHz. Of course, in other embodiments, the ultrasonic waves of the two frequencies provided by the ultrasonic generator 10 may also be two adjustable ranges of frequencies, for example, the first frequency ranges from 35 KHz to 45KHz, the second frequency ranges from 15KHz to 25KHz, the first frequency can be adjusted by the frequency adjustment knob on the ultrasonic generator 10, and the second frequency can be adjusted by the other frequency adjustment knob on the ultrasonic generator 10.

The workbench 40 is used for stabilizing the first ultrasonic excitation head 20, the second ultrasonic excitation head 30 and the test piece 200, that is, when the test piece 200 is detected, the first ultrasonic excitation head 20, the second ultrasonic excitation head 30 and the test piece 200 are all stabilized on the workbench 40, and the first ultrasonic excitation head 20 and the second ultrasonic wave excite and vibrate the test piece 200.

The table 40 may have various structures, and in the present embodiment, as shown in fig. 2 and 3, the table 40 includes a first holding frame 41 and a second holding frame 42. The first holder 41 is used for holding the first ultrasonic excitation head 20 and the second ultrasonic excitation head 30; the second clamping frame 42 is used for clamping the test piece 200, and the first clamping frame 41 is movably disposed on the second clamping frame 42 along the first predetermined direction a.

After the test piece 200 is clamped on the second clamping frame 42 and the first ultrasonic excitation head 20 and the second ultrasonic excitation head 30 are clamped on the first clamping frame 41, the first clamping frame 41 moves relative to the second clamping frame 42 along the first preset direction a, so that the relative positions of the first ultrasonic excitation head 20 and the second ultrasonic excitation head 30 and the test piece 200 can be changed, and a plurality of positions of the test piece 200 can be excited, so that the excitation detection range of the test piece 200 is enlarged.

In other embodiments, the first holder 41 for holding the first ultrasonic excitation head 20 and the second ultrasonic excitation head 30 and the second holder 42 for holding the test piece 200 may be fixed together. Of course, multiple positions of the test piece 200 may be excited by moving the test piece 200. Further, the relative positions of the first ultrasonic excitation head 20 and the second ultrasonic excitation head 30 with respect to the test piece 200 may be maintained after the test piece 200 is fixed to the second holder 42, the first holder 41 is fixed to the test piece 200, and the test piece 200 is held by the first holder 41.

Further, the first holding frame 41 includes a frame body 411, a first holding member 412 and a second holding member 413. The frame body 411 is movably disposed on the second holding frame 42 along the first predetermined direction a. The first holding member 412 is used for holding the first ultrasonic excitation head 20, and the first holding member 412 is connected to the frame 411. The second clamping member 413 is used for clamping the second ultrasonic excitation head 30, the second clamping member 413 is connected to the frame body 411, and the second clamping member 413 and the first clamping member 412 have a distance in a second predetermined direction B, which is perpendicular to the first predetermined direction a.

The second clamping member 413 for clamping the second ultrasonic excitation head 30 is separated from the first clamping member 412 for clamping the first ultrasonic excitation head 20 in the second preset direction B perpendicular to the first preset direction a, and when the frame 411 moves along the first preset direction a, the motion paths of the first ultrasonic excitation head 20 and the second ultrasonic excitation head 30 do not overlap, so that repeated excitation is avoided.

The first holding member 412 is used to hold the first ultrasonic excitation head 20, and may have various structures as long as the first ultrasonic excitation head 20 can be stabilized. Alternatively, as shown in fig. 4, the first clamping member 412 includes a first C-shaped portion 4121 for clamping the first ultrasonic excitation head 20. When the first ultrasonic excitation head 20 is snapped into the first C-shaped portion 4121, the first C-shaped portion 4121 will be elastically deformed, so as to facilitate the clamping and the removal of the first ultrasonic excitation head 20.

The first C-shaped portion 4121 is a partially annular structure having a central angle greater than 180 degrees.

In addition, the first clamping member 412 further includes a first lever part 4122, and one end of the first lever part 4122 is fixed to a middle position of an outer circumference of the first C-shaped part 4121. The frame body 411 is provided with a first through hole 41115, the first rod part 4122 penetrates through the first through hole 41115, and the first rod part 4122 is screwed with a first nut. After the first nut is tightened, the first nut and the first C-shaped portion 4121 clamp the frame body 411 together, thereby fixing the first clamping member 412 and the frame body 411.

Optionally, the inner contour of the cross section of the first through hole 41115 matches the outer contour of the cross section of the first stem portion 4122, and the cross sections of the first through hole 41115 and the first stem portion 4122 are both rectangular.

The second holding member 413 functions to hold the second ultrasonic excitation head 30, and may have various structures as long as the second ultrasonic excitation head 30 can be stabilized. Optionally, the second clamping member 413 includes a second C-shaped portion 4131 for clamping the second ultrasonic excitation head 30. When the second ultrasonic excitation head 30 is clamped into the second C-shaped part 4131, the second C-shaped part 4131 will be elastically deformed, so that the second ultrasonic excitation head 30 can be conveniently clamped and disassembled.

The second C-shaped portion 4131 is a partially annular structure having a central angle greater than 180 degrees.

In addition, the second clamping member 413 further includes a second lever portion 4132, and one end of the second lever portion 4132 is fixed to a middle position of an outer circumference of the second C-shaped portion 4131. The frame body 411 is provided with a second through hole 41124, the second rod part 4132 penetrates through the second through hole 41124, and the second rod part 4132 is screwed with a second nut. After the second nut is tightened, the second nut and the second C-shaped portion 4131 clamp the frame body 411 together, thereby fixing the second clamping member 41 to the frame body 411.

Optionally, the inner contour of the cross-section of the second through hole 41124 matches the outer contour of the cross-section of the second stem portion 4132, and the cross-sections of the second through hole 41124 and the second stem portion 4132 are both rectangular.

Further, the support body 411 is split type structure, and support body 411 includes first support body 4111 and second support body 4112, and first support body 4111 is along the movably setting in second holding frame 42 of first predetermined direction a, and first holder 412 is connected in first support body 4111. The second frame 4112 is movably disposed on the first frame 4111 along a second predetermined direction B, and the second clamping member 413 is connected to the second frame 4112.

The distance between the first clamping member 412 and the second clamping member 413 can be changed by moving the second frame body 4112 along the second preset direction B, so as to change the distance between the first ultrasonic excitation head 20 and the second ultrasonic excitation head 30, and thus adjust the distance between the first ultrasonic excitation head 20 and the second ultrasonic excitation head 30 according to specific situations.

In other embodiments, the frame 411 may also be a unitary structure, that is, the first frame 4111 and the second frame 4112 are fixed together.

Of course, the manner of realizing the movement of the second frame body 4112 may be various, for example, a guide rail, a guide pillar, etc. for the movement of the second frame body 4112 are provided on the first frame body 4111.

In this embodiment, the support body 411 further includes a bolt 4113, a nut 4114 and an elastic member 4115, a first guide hole 41111 is formed in the first support body 4111, a second guide hole 41121 is formed in the second support body 4112, the bolt 4113 is inserted into the first guide hole 41111 and the second guide hole 41121, the nut 4114 is screwed on the bolt 4113, the elastic member 4115 is located between the first support body 4111 and the second support body 4112, and the elastic member 4115 is sleeved on the outer side of the bolt 4113. When the nut 4114 is tightened, the first frame body 4111 and the second frame body 4112 can compress the elastic member 4115.

Bolt 4113 is inserted in first guiding hole 41111 of first support body 4111 and second guiding hole 41121 of second support body 4112, and bolt 4113 has certain guiding effect on first support body 4111 and second support body 4112 to realize the movement of second support body 4112. When the nut 4114 is tightened, the first frame body 4111 and the second frame body 4112 approach relatively to each other and compress the elastic member 4115; when the nut 4114 is unscrewed, the first frame 4111 and the second frame 4112 are relatively far away from each other by the elastic member 4115. Through screwing up or unscrewing nut 4114, the relative position of first support body 4111 and second support body 4112 can be adjusted conveniently and quickly. Of course, when the nut 4114 is screwed, the bolt 4113 is stationary; the nut 4114 may also be stationary, and the resilient member 4115 is compressed by tightening the bolt 4113.

The bolt 4113, the nut 4114 and the elastic member 4115 constitute a guide assembly, which may be one, two, three, etc. In this embodiment, there are two guide assemblies, i.e., two bolts 4113, two nuts 4114 and two elastic members 4115.

The resilient member 4115 may be of various structures as long as it has the ability to deform and recover from deformation. Illustratively, the resilient member 4115 is a spring.

It should be noted that, in other embodiments, the bolt 4113 may also be directly fixed with the first frame 4111.

Optionally, the first frame body 4111 includes a first connecting rod 41112 and a first connecting plate 41113, one end of the first connecting rod 41112 is fixedly connected to one end of the first connecting plate 41113, the first connecting rod 41112 is perpendicular to the first connecting plate 41113, and the first connecting rod 41112 is configured to be connected to the second clamping frame 42. A first through hole 41115, through which the first rod 4122 of the first clamping member 412 penetrates, of the frame body 411 is disposed on the first connecting rod 41112, and a first guide hole 41111, through which the bolt 4113 penetrates, of the frame body is disposed on the first connecting plate 41113.

Optionally, the second frame body 4112 includes a second connecting rod 41122 and a second connecting plate 41123, one end of the second connecting rod 41122 is fixedly connected to one end of the second connecting plate 41123, and the second connecting rod 41122 is perpendicular to the second connecting plate 41123. A second through hole 41124, through which the second rod 4132 of the second clamping member 413 passes, of the frame body 411 is disposed on the second connecting rod 41122, and a second guide hole 41121, through which the bolt 4113 passes, is disposed on the second connecting plate 41123.

The second connecting plate 41123 is parallel to the first connecting plate 41113, the first connecting rod 41112 is collinear with the second connecting rod 41122, the first connecting rod 41112 extends from the first connecting plate 41113 in a direction away from the second connecting plate 41123, and the second connecting rod 41122 extends from the second connecting plate 41123 in a direction away from the first connecting plate 41113.

Further, as shown in fig. 2, the second clamping frame 42 includes a first supporting frame 421, a second supporting frame 422, a third clamping member 423 and a fourth clamping member 424, the second supporting frame 422 and the first supporting frame 421 are disposed at an interval in a third preset direction C, the third clamping member 423 is connected to the first supporting frame 421, the third clamping member 423 is used for clamping a first end of the test piece 200, the fourth clamping member 424 is connected to the second supporting frame 422, and the fourth clamping member 424 is used for clamping a second end of the test piece 200 opposite to the first end. The third preset direction C is consistent with the first preset direction a.

When stabilizing the test piece 200, the third clamping member 423 on the first support frame 421 can clamp the first end of the test piece 200, and the fourth clamping member 424 on the second support frame 422 can clamp the second end of the test piece 200 opposite to the first end, so as to ensure that the test piece 200 has good stability after stabilizing on the second clamping frame 42.

The third preset direction C is a horizontal direction, the first preset direction a is also a horizontal direction, and the second preset direction B is a vertical direction.

In other embodiments, as shown in fig. 5, the third predetermined direction C may also be perpendicular to the first predetermined direction a. The third preset direction C is a horizontal direction, the first preset direction a is a vertical direction, and the second preset direction B is also a horizontal direction.

Further, with reference to fig. 2, the second holding frame 42 further includes a guiding rod 425, the first supporting frame 421 and the second supporting frame 422 are connected by the guiding rod 425, and the first holding frame 41 is movably disposed on the guiding rod 425 along the first predetermined direction a. The guide rods 425 allow the first clamping frame 41 to move along the first predetermined direction a, so that the first clamping frame 41 has good stability during moving.

Optionally, the first clamping frame 41 is provided with a sleeve 44, and the sleeve 44 is sleeved outside the guide rod 425. The sleeve 44 is fixed to one end of the first connecting rod 41112 of the first frame body 4111 of the first clamping frame 41, which is far away from the first connecting plate 41113. The inner contour of the cross-section of the sleeve 44 matches the outer contour of the cross-section of the guide rod 425, and both the inner contour of the cross-section of the sleeve 44 and the outer contour of the cross-section of the second rod portion 4132 are rectangular.

Alternatively, as shown in fig. 6, the third clamping member 423 includes a first connection portion 4231, a first deformation portion 4232 and a second deformation portion 4233 connected in sequence, the first connection portion 4231 is connected to the first support frame 421, the first deformation portion 4232 and the second deformation portion 4233 are used for cooperatively clamping the test piece 200, a first locking member 426 and a second locking member 427 are arranged on the first support frame 421, the first locking member 426 is used for deforming the first deformation portion 4232 relative to the first connection portion 4231 in a direction approaching the second deformation portion 4233, and the second locking member 427 is used for deforming the second deformation portion 4233 relative to the first connection portion 4231 in a direction approaching the first deformation portion 4232. The first and second deforming parts 4232 and 4233 are deformed by the first and second locking members 426 and 427, respectively, to conveniently grip the test piece 200.

The first deformation portion 4232 and the second deformation portion 4233 are arranged opposite to each other, and a gap between the first deformation portion 4232 and the second deformation portion 4233 is used for the test piece 200 to be clamped. One end of the first connection portion 4231 projects from the first deformation portion 4232, and the other end of the first connection portion 4231 projects from the second deformation portion 4233.

Illustratively, the first locking member 426 and the second locking member 427 are both screws, and the first locking member 426 and the second locking member 427 are both screwed to the first support frame 421.

Optionally, the fourth clamping member 424 includes a second connecting portion 4241, a third deforming portion 4242 and a fourth deforming portion 4243 which are connected in sequence, the second connecting portion 4241 is connected to the second support frame 422, the third deforming portion 4242 and the fourth deforming portion 4243 are used for cooperatively clamping the test piece 200, a third locking member 428 and a fourth locking member 429 are arranged on the second support frame 422, the third locking member 428 is used for enabling the third deforming portion 4242 to deform towards the fourth deforming portion 4243 relative to the second connecting portion 4241, and the second locking member 427 is used for enabling the fourth deforming portion 4243 to deform towards the third deforming portion 4242 relative to the second connecting portion 4241. The third and fourth deforming parts 4242 and 4243 may be deformed by the third and fourth locking members 428 and 429, respectively, to facilitate gripping of the test piece 200.

The third deformation portion 4242 and the fourth deformation portion 4243 are arranged opposite to each other, and a gap between the third deformation portion 4242 and the fourth deformation portion 4243 is used for the test piece 200 to be inserted. One end of the second connection portion 4241 projects from the third deformation portion 4242, and the other end of the second connection portion 4241 projects from the fourth deformation portion 4243.

The third locking member 428 and the fourth locking member 429 are both screwed to the second support frame 422. Illustratively, the third locking member 428 and the fourth locking member 429 are both screws.

Further, in the present embodiment, the fifth locking member 430 is screwed to the first connecting portion 4231 of the third clamping member 423, and the sixth locking member 431 is screwed to the second connecting portion 4241 of the fourth clamping member 424. Illustratively, the fifth locking member 430 and the sixth locking member 431 are both screws.

After the third clamping member 423 and the fourth clamping member 424 clamp the test piece 200 together, the fifth locking member 430 and the sixth locking member 431 can be screwed down, so that the fifth locking member 430 and the sixth locking member 431 are respectively pressed at two ends of the test piece 200, and the stability of the test piece 200 after being clamped is further improved.

After the test piece 200 is fixed to the second clamping frame 42, both the first ultrasonic excitation head 20 and the second ultrasonic excitation head 30 are perpendicular to the plane of the test piece 200.

The first support frame 421 mainly plays a supporting role, and may have various structures. Optionally, the first support frame 421 includes a first bottom plate 4211, a first upright plate 4212 and a second upright plate 4213, the first upright plate 4212 and the second upright plate 4213 are both fixed on the top of the first bottom plate 4211, and the first upright plate 4212 and the second upright plate 4213 are both perpendicular to the first bottom plate 4211. First riser 4212 and second riser 4213 form a first centre gripping clearance between them, and third holder 423 is located in the first centre gripping clearance partially. A portion of the third clamping piece 423, which protrudes from the first deforming portion 4232, of the first connecting portion 4231 is fixedly connected with the first vertical plate 4212; the portion of the third clamp 423 where the first connection portion 4231 protrudes from the second deformation portion 4233 is connected and fixed to the second upright plate 4213. First locking member 426 is threadably engaged to first riser 4212 and second locking member 427 is threadably engaged to second riser 4213.

In addition, the bottom of the first base plate 4211 is provided with a plurality of first rollers 4214.

The second support 422 mainly serves as a support, and may have various structures. Optionally, the second support frame 422 includes a second bottom plate 4221, a third riser 4222 and a fourth riser 4223, the third riser 4222 and the fourth riser 4223 are both fixed on the top of the second bottom plate 4221, and the third riser 4222 and the fourth riser 4223 are both perpendicular to the second bottom plate 4221. A second clamping gap is formed between third riser 4222 and fourth riser 4223, and fourth clamp 424 is partially located in the second clamping gap. The portion of the fourth clamping piece 424, which protrudes from the third deformation portion 4242, of the second connecting portion 4241 is fixedly connected to the third vertical plate 4222; the portion of the fourth clamp 424, where the second connecting portion 4241 protrudes from the fourth deforming portion 4243, is fixedly connected to the fourth upright plate 4223. Third locking member 428 is threadably engaged to third riser 4222 and fourth locking member 429 is threadably engaged to fourth riser 4223.

In addition, the bottom of the second base plate 4221 is provided with a plurality of second rollers 4224. The movement of the whole workbench 40 can be realized through the first roller 4214 and the second roller 4224, and the transfer and the handling of the workbench 40 are facilitated.

In the present embodiment, the first ultrasonic excitation head 20 and the second ultrasonic excitation head 30 have the same configuration. The structure of the first ultrasonic excitation head 20 will be described in detail below with reference to fig. 7.

The first ultrasonic excitation head 20 includes a piezoelectric ceramic workpiece 21, an amplitude modulator 22, and a tool bar 23, which are coaxially disposed, and the amplitude modulator 22 is connected between the piezoelectric ceramic workpiece 21 and the tool bar 23. The piezoelectric ceramic workpiece 21 is electrically connected to the ultrasonic generator 10 through a wire.

Wherein, the modulator 22 is provided with an annular protrusion 221 which is coaxial with the modulator. When the first holder 412 holds the first ultrasonic excitation head 20, the first C-shaped portion 4121 of the first holder 412 is caught outside the amplitude modulator 22, and the first C-shaped portion 4121 is defined between the annular protrusion 221 and the piezoceramic workpiece 21. The second clamping member 413 clamps the second ultrasonic excitation head 30 in the same manner as the first clamping member 412 clamps the first ultrasonic excitation head 20, and thus, the description thereof is omitted.

Illustratively, as shown in fig. 8, the ultrasonic generator 10 includes a microprocessor, an operation parameter display module, an operation indicator light module, a parameter adjustment module, an electroacoustic conversion module, a data exchange module, a circuit protection and heat dissipation module, and a power supply module, wherein the operation parameter display module, the operation indicator light module, the parameter adjustment module, the electroacoustic conversion module, the data exchange module, the circuit protection and heat dissipation module, and the power supply module are all electrically connected to the microprocessor, and the first ultrasonic excitation head 20 and the second ultrasonic excitation head 30 are also electrically connected to the electroacoustic conversion module. Wherein the parameter adjusting module can adjust the amplitudes of the first ultrasonic excitation head 20 and the second ultrasonic excitation head 30.

In addition, as shown in fig. 9, the second aspect of the present application provides an ultrasonic excitation system 300, which includes a display device 310 and the ultrasonic excitation device 100 provided in the first aspect of the present application, where the display device 310 is electrically connected to the ultrasonic generator 10. Parameters such as amplitude, frequency, etc. of the ultrasonic waves can be displayed more intuitively and accurately through the display device 310.

Illustratively, the display device 310 is a computer.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. An ultrasonic excitation device, comprising:

an ultrasonic generator;

the first ultrasonic excitation head is electrically connected with the ultrasonic generator and used for detecting a test piece, and the ultrasonic generator can provide ultrasonic waves with a first frequency for the first ultrasonic excitation head;

the second ultrasonic excitation head is electrically connected with the ultrasonic generator and is used for detecting the test piece, and the ultrasonic generator can provide ultrasonic waves with a second frequency for the second ultrasonic excitation head; and

the workbench is used for stabilizing the first ultrasonic excitation head, the second ultrasonic excitation head and the test piece;

wherein the first frequency is greater than the second frequency.

2. The ultrasonic excitation device of claim 1, wherein the stage comprises:

the first clamping frame is used for clamping the first ultrasonic excitation head and the second ultrasonic excitation head; and

and the first clamping frame is movably arranged on the second clamping frame along a first preset direction.

3. The ultrasonic excitation device according to claim 2, wherein the first holder includes;

the frame body is movably arranged on the second clamping frame along the first preset direction;

the first clamping piece is used for clamping the first ultrasonic excitation head and connected to the frame body; and

and the second clamping piece is used for clamping the second ultrasonic excitation head, is connected to the frame body, has a distance in a second preset direction with the first clamping piece, and is perpendicular to the first preset direction in the second preset direction.

4. The ultrasonic excitation device according to claim 3, wherein the first clamp includes a first C-shaped portion for clamping the first ultrasonic excitation head; and/or

The second holder includes a second C-shaped portion for holding the second ultrasonic excitation head.

5. An ultrasonic excitation device according to claim 3 or 4 wherein the frame body comprises;

the first frame body is movably arranged on the second clamping frame along the first preset direction, and the first clamping piece is connected to the first frame body; and

the second support body, the second support body is followed the second is predetermine the direction movably set up in first support body, the second holder connect in the second support body.

6. The ultrasonic stimulation device according to claim 5, wherein the holder further comprises:

the bolt is arranged on the first frame body in a penetrating mode, a first guide hole is formed in the first frame body, a second guide hole is formed in the second frame body, and the bolt penetrates through the first guide hole and the second guide hole;

a nut screwed to the bolt; and

the elastic piece is positioned between the first frame body and the second frame body and sleeved on the outer side of the bolt;

when the nut is screwed down, the elastic piece can be compressed by the first frame body and the second frame body.

7. The ultrasonic excitation device according to claim 2, wherein the second holder includes:

a first support frame;

the second support frame and the first support frame are arranged at intervals in a third preset direction;

the third clamping piece is connected to the first support frame and used for clamping the first end part of the test piece; and

the fourth clamping piece is connected to the second supporting frame and used for clamping a second end part of the test piece, which is opposite to the first end part;

and the third preset direction is consistent with or vertical to the first preset direction.

8. An ultrasonic excitation device according to claim 7 wherein the third predetermined direction is coincident with the first predetermined direction;

the second clamping frame further comprises a guide rod, the first support frame is connected with the second support frame through the guide rod, and the first clamping frame is movably arranged on the guide rod along the first preset direction.

9. The ultrasonic excitation device according to claim 7, wherein the third holder includes a first connection portion, a first deformation portion, and a second deformation portion which are connected in this order; the first connecting part is connected to the first support frame, and the first deformation part and the second deformation part are used for clamping the test piece in a matched manner; the first support frame is provided with a first locking piece and a second locking piece, and the first locking piece is used for enabling the first deformation part to deform relative to the first connecting part in the direction close to the second deformation part; the second locking piece is used for enabling the second deformation part to deform relative to the first connecting part in the direction close to the first deformation part; and/or

The fourth clamping piece comprises a second connecting part, a third deformation part and a fourth deformation part which are sequentially connected; the second connecting part is connected to the second support frame, and the third deformation part and the fourth deformation part are used for clamping the test piece in a matched manner; a third locking piece and a fourth locking piece are arranged on the second support frame, and the third locking piece is used for enabling the third deformation part to deform towards the direction close to the fourth deformation part relative to the second connecting part; the second locking piece is used for enabling the fourth deformation portion to deform towards the direction close to the third deformation portion relative to the second connecting portion.

10. An ultrasonic excitation system comprising a display device and an ultrasonic excitation device according to any one of claims 1 to 9, the display device being electrically connected to the ultrasonic generator.

Images