CN211877877U - Electromagnetic ultrasonic probe with auxiliary assembling and disassembling device - Google Patents
Electromagnetic ultrasonic probe with auxiliary assembling and disassembling device Download PDFInfo
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- CN211877877U CN211877877U CN202020072049.9U CN202020072049U CN211877877U CN 211877877 U CN211877877 U CN 211877877U CN 202020072049 U CN202020072049 U CN 202020072049U CN 211877877 U CN211877877 U CN 211877877U
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Abstract
The utility model provides an electromagnetism ultrasonic probe with supplementary handling device, include: the probe comprises a probe shell, a detection coil, a lower positioning ring, a compression spring, a permanent magnet, a magnet shell, a positioning pin, an upper positioning ring, an upper cover and a joint. A compression spring is arranged between a permanent magnet and a probe shell, the permanent magnet is placed in the magnet shell, a positioning pin hole and a positioning pin are arranged between the magnet shell and the probe shell, the position of the permanent magnet is controlled by the aid of the positioning pin and the spring force and the magnetic force of the permanent magnet are balanced. In the process of installing the probe, the impact force between the probe and the detected workpiece is obviously reduced, and the stability of the installation process is improved. The detection personnel are prevented from being damaged by squeezing, and the operation danger is reduced. In the probe dismantling process, the magnetic force of the permanent magnet is balanced by the elastic force of the spring, the probe can be removed only by small lifting force, the detection efficiency is improved, and the operation convenience of the probe is improved.
Description
Technical Field
The utility model belongs to the technical field of the electromagnetism ultrasonic testing, concretely relates to electromagnetism ultrasonic transducer with supplementary handling device.
Background
Compared with the traditional piezoelectric ultrasonic detection technology, the electromagnetic ultrasonic detection technology has the advantages of non-contact, no need of a coupling agent, capability of exciting various detection waveforms by changing the shape of a coil, and suitability for various detection occasions. The electromagnetic ultrasonic probe provides a static magnetic field by using a permanent magnet, and ultrasonic wave emission is realized by Lorentz force or magnetostriction force under the static magnetic field. The size of permanent magnet magnetic field intensity has very big influence to electromagnetic ultrasonic probe transduction efficiency, increases the permanent magnet size, provides stronger magnetic field intensity and can show and improve piezoelectric sensor ultrasonic emission energy, and the increase detects thickness, improves the SNR, reduces and receives the system design degree of difficulty of enlargiing. Therefore, the electromagnetic ultrasonic probes currently used generally use permanent magnets having strong magnetic force. The magnetic force between the probe and the detected object is very large when the detected object is made of ferromagnetic materials such as carbon steel, when the probe is contacted with the detected object, the probe is suddenly attracted to the surface of the detected object, fingers are easily extruded, and meanwhile, the probe is difficult to accurately place on a part to be detected at one time, and the positioning is difficult. When the probe is taken down after detection is finished, the magnetic force between the probe and a detection object is overcome by large lifting force, the installation and the removal of the probe are very inconvenient, and the detection efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the not enough of above-mentioned technique, provided an electromagnetism ultrasonic probe with supplementary handling device, set up compression spring between permanent magnet and probe shell, the permanent magnet is placed in the magnet shell, sets up location pinhole and locating pin between magnet shell and the probe shell, and is balanced mutually with the help of the magnetic force of spring force and permanent magnet, with the help of locating pin control permanent magnet position. The optimized effect is that the distance between the permanent magnet and the surface of the workpiece to be detected is far, the magnetic force between the permanent magnet and the surface of the workpiece to be detected is small, and the probe is convenient to move and position. After the position of the probe is determined, the positioning pin is pressed downwards, the permanent magnet is finally pressed onto the detection coil by overcoming the elastic force of the spring through the magnetic force of the permanent magnet, the spring is in a limit compression state at the moment, the magnetic force of the permanent magnet is buffered, and the impact caused by the sudden attraction of the probe and a detected workpiece is avoided. After the installation of the probe is completed, the positioning pin is pulled out, the spring drives the upper positioning ring to pop up, and then the permanent magnet is not under the action of upward elasticity any more, so that the weakening of sound wave energy caused by insufficient magnetic field intensity of the probe in the working process is avoided. After the detection is finished, the positioning pin is utilized again to compress the spring to drive the permanent magnet to move upwards, and along with the increase of the distance between the permanent magnet and the detected workpiece, the magnetic force between the permanent magnet and the detected workpiece is reduced, so that the probe is removed.
For solving one of above-mentioned technical problem at least, the utility model discloses the technical scheme who takes is:
an electromagnetic ultrasound probe with an auxiliary handling device disposed within a probe housing, comprising: an upper positioning ring, a lower positioning ring, a compression spring and a magnet shell, wherein two side surfaces of the probe shell are respectively provided with a first positioning pin hole, two side surfaces of the upper positioning ring are respectively provided with a second positioning pin hole, two ends of the compression spring are respectively connected with the upper positioning ring and the lower positioning ring, the magnet shell is arranged between the upper positioning ring and the lower positioning ring, a permanent magnet is arranged in the magnet shell, the two side surfaces of the magnet shell are respectively provided with a third positioning pin hole, when in detection, the upper positioning ring and the magnet shell are in a separated state by inserting the positioning pins into the first positioning pin hole and the second positioning pin hole in sequence, after the detection is finished, and the upper positioning ring and the magnet shell are in a locking state by inserting the positioning pins into the first positioning pin hole, the second positioning pin hole and the third positioning pin hole in sequence.
Further, the method also comprises the following steps: the detection coil is arranged in the lower positioning ring and is abutted against the permanent magnet during detection; the upper cover is arranged above the upper positioning ring and is in threaded sealing connection with the probe shell and used for pressing the permanent magnet downwards; the joint is in threaded connection with the upper cover.
Furthermore, the magnet shell, the permanent magnet and the upper cover are all provided with center holes, so that a lead for connecting the detection coil and the joint can conveniently penetrate through the center holes.
Furthermore, the upper cover is provided with an external thread, and the probe shell is provided with an internal thread matched with the external thread.
Furthermore, the detection coil is a copper wire wound coil or a PCB printed circuit.
Further, the joint is arranged at the central hole of the upper cover for thread sealing.
Furthermore, a plurality of spring positioning holes are respectively formed in the end faces of the upper positioning ring and the lower positioning ring, and two ends of the compression spring are respectively connected with the spring positioning holes of the upper positioning ring and the lower positioning ring.
Furthermore, the number of the spring positioning holes is 4-12.
Furthermore, the thickness of the lower bottom surface of the magnet shell is 0.5-1 mm.
The beneficial effects of the utility model include at least: the electromagnetic ultrasonic probe of the utility model is provided with the device for assisting the installation and the disassembly inside the probe, so that the impact force between the probe and the detected workpiece is obviously reduced in the installation process of the probe, and the stability of the installation process is improved; the detection personnel are prevented from being crushed, and the operation danger is reduced; in the process of dismantling the probe, the magnetic force of the permanent magnet is balanced by the elastic force of the spring, and the probe can be removed only by small lifting force.
Drawings
The present invention will be described in detail with reference to the accompanying drawings and examples.
Fig. 1 is a schematic structural diagram of the electromagnetic ultrasonic probe of the present invention.
Fig. 2 is a schematic view of the lower positioning ring of the present invention.
Fig. 3 is a schematic view of the upper positioning ring of the present invention.
Fig. 4 is a sectional view taken along line a-a of fig. 3.
Fig. 5 is a schematic view of the structure of the magnet housing of the present invention.
The device comprises a probe shell, a first positioning pin hole, a second positioning pin hole, a detection coil, a first positioning ring, a second positioning ring, a lower positioning ring, a compression spring, a permanent magnet, a magnet shell, a first positioning pin hole, a second positioning pin hole, a permanent magnet, a magnet shell, a permanent magnet shell, a third positioning pin hole, a positioning pin.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the following specific embodiments. The following description of the embodiments is merely exemplary in nature and is in no way intended to limit the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications.
According to the embodiment of the utility model, the utility model provides an electromagnetic ultrasonic probe with supplementary loading and unloading device, fig. 1 is the utility model discloses electromagnetic ultrasonic probe structure schematic diagram, as shown in fig. 1, electromagnetic ultrasonic probe mainly includes: the probe comprises a probe shell 1, a detection coil 2, a lower positioning ring 3, a compression spring 4, a permanent magnet 5, a magnet shell 6, a positioning pin 7, an upper positioning ring 8, an upper cover 9 and a joint 10.
The probe shell 1 is made of stainless steel materials, is integrally a cylindrical cavity, has the thickness of 0.5-1mm at the lower bottom surface, is provided with two first positioning pin holes 101 between the positions B and C at the left and right sides, and is provided with internal threads at the positions above C.
The upper cover 9 is made of stainless steel materials, threads are processed on the outer surface of the upper cover 9, and the upper cover 9 is connected with the probe shell 1 through the threads.
The detection coil 2 can be a copper wire wound coil or a PCB printed circuit. The detection coil is placed on the lower surface of the probe case 1 when the probe is assembled.
Fig. 2 is a schematic view of the lower positioning ring of the present invention, and referring to fig. 2, the lower positioning ring 3 is made of stainless steel material, and is provided with spring positioning holes 11, and the number of the spring positioning holes can be set to 4-12 according to the requirement. The lower locating ring is placed on the lower surface of the probe housing 1 when the probe is assembled.
Fig. 3 and 4 are schematic diagrams of the upper positioning ring structure of the present invention, and as shown in fig. 3 and 4, the upper positioning ring 8 is made of stainless steel material, and is provided with spring positioning holes 11, and the number of the spring positioning holes can be set to 4-12 according to the requirement. Two second positioning pin holes 801 are machined on the left side surface and the right side surface.
The compression spring 4 is a helical spring bearing axial pressure and is wound by stainless steel wires. The compression spring is placed in the spring positioning holes of the lower positioning ring 3 and the upper positioning ring 8 when the probe is assembled.
The permanent magnet 5 is cylindrical, a central hole is machined in the permanent magnet, and the permanent magnet is made of Ru ferroboron and can provide a static bias magnetic field.
Fig. 5 is a schematic structural view of the magnet housing of the present invention, referring to fig. 5, the magnet housing 6 is made of stainless steel, the thickness of the lower bottom surface is 0.5-1mm, and two third positioning pin holes 601 are formed on the left and right side surfaces.
The locating pin 7 is the cylinder, uses stainless steel material, and both ends respectively set up 1 about the probe assembly time needs.
The adapter 10 is made of stainless steel material, has threads on its outer surface, and is mounted on the center line of the upper surface of the probe housing 1 by means of threaded connection, and the center hole is sealed by means of threads.
Probe assembly as shown in fig. 1, the assembly process of the probe is as follows:
(1) the lower positioning ring 3 is placed on the lower surface of the probe shell 1, and the detection coil 2 is placed on the lower surface of the probe shell 1 and in the lower positioning ring 3.
(2) And a compression spring 4 is placed in a spring positioning hole of the lower positioning ring 3, the lower end part of the spring is contacted with the lower surface of the probe shell 1, and the spring is kept in an upright state.
(3) The permanent magnet 5 is placed inside the magnet case 6, the lead wire connecting the detection coil 2 and the joint 10 is passed through the center holes of the magnet case 6 and the permanent magnet 5, and the magnet case 6 is placed inside the probe case 1 onto the detection coil 2.
(4) The upper positioning ring 8 is placed inside the probe shell 1, the spring positioning hole is in contact with the upper end part of the spring, at the moment, due to the weight of the upper positioning ring 8, the compression spring 4 is in a partially compressed state, the upper positioning ring 8 is pressed down by hand, the position of the second positioning pin hole is located between C-A in the figure 1, 2 positioning pins 7 are inserted into the first positioning pin hole of the probe shell 1 and the second positioning pin hole of the upper positioning ring 8, and the upper surface of the positioning pin 7 is located at the position C after the hand is loosened.
(5) And (3) pressing down the 2 positioning pins 7, further inserting the positioning pins 7 inwards after the second positioning pin holes of the upper positioning ring 8 are aligned with the third positioning pin holes of the magnet shell 6, and locking the positions of the upper positioning ring 8 and the magnet shell 6, wherein the center line position of the positioning pins 7 is positioned between C-A.
(6) The lead wire connecting the detection coil 2 and the joint 10 is connected with the joint 10 through the upper cover 9, and the joint 10 is connected with the upper cover 9 through threads.
(7) The upper cover 9 is connected with the probe shell 1 through threads, the lower surface of the upper cover 9 is in contact with the upper surface of the permanent magnet 5, and the upper cover 9 presses the permanent magnet downwards to enable the center line of the positioning pin 7 to be located at the position A.
The utility model discloses in an electromagnetic ultrasonic probe with supplementary loading and unloading device concrete application method is:
(1) placing the probe at the detection part;
(2) the positioning pin is pressed down until the lower surface of the positioning pin is slightly higher than the position B of the probe shell, and the permanent magnet is in contact with the detection coil at the moment;
(3) the positioning pin is pulled outwards to enable the upper positioning ring and the magnet shell to be separated from a locking state, the upper positioning ring moves upwards under the action of the elastic force of a compression spring, the positioning pin is still inserted into a second positioning pin hole of the upper positioning ring, the upper surface of the positioning pin is overlapped with the position C of the probe shell, the permanent magnet in the probe is not influenced by the elastic force of the spring any more at the moment, the permanent magnet is fully contacted with the detection coil, the position of the permanent magnet is as close to the upper surface of a detected workpiece as possible, and a strong enough magnetic force;
(4) after detection is completed, the positioning pin is pressed downwards to enable the lower surface of the positioning pin to be located at the position B of the probe shell, the second positioning pin hole of the upper positioning ring is overlapped with the third positioning pin hole of the magnet shell, the positioning pin is pushed inwards, after the positions of the upper positioning ring and the magnet shell are locked, the positioning pin is lifted upwards, the permanent magnet is far away from the surface of a detection workpiece by utilizing the elastic force of a spring and the lifting force of a hand, the magnetic force is obviously reduced, after the central line of the pin to be positioned returns to the position A of the probe shell, the probe shell is lifted.
To sum up, the electromagnetic ultrasonic probe of the utility model is provided with a device for assisting the installation and the disassembly inside the probe, so that the impact force between the probe and the detected workpiece is obviously reduced in the installation process of the probe, and the stability of the installation process is improved; the detection personnel are prevented from being crushed, and the operation danger is reduced; in the process of dismantling the probe, the magnetic force of the permanent magnet is balanced by the elastic force of the spring, and the probe can be removed only by small lifting force.
In the description of the present invention, it is to be understood that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or more of the features.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "abutted," and the like are to be construed broadly, e.g., as fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that various changes, modifications, substitutions and alterations can be made in the above embodiments by those skilled in the art without departing from the scope of the present invention, and that various changes in the detailed description and applications can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (9)
1. An electromagnetic ultrasound probe with an auxiliary handling device, characterized in that the auxiliary handling device is disposed in a probe housing, comprising: an upper positioning ring, a lower positioning ring, a compression spring and a magnet shell, wherein two side surfaces of the probe shell are respectively provided with a first positioning pin hole, two side surfaces of the upper positioning ring are respectively provided with a second positioning pin hole, two ends of the compression spring are respectively connected with the upper positioning ring and the lower positioning ring, the magnet shell is arranged between the upper positioning ring and the lower positioning ring, a permanent magnet is arranged in the magnet shell, the two side surfaces of the magnet shell are respectively provided with a third positioning pin hole, when in detection, the upper positioning ring and the magnet shell are in a separated state by inserting the positioning pins into the first positioning pin hole and the second positioning pin hole in sequence, after the detection is finished, and the upper positioning ring and the magnet shell are in a locking state by inserting the positioning pins into the first positioning pin hole, the second positioning pin hole and the third positioning pin hole in sequence.
2. The electromagnetic ultrasound probe of claim 1, further comprising: the detection coil is arranged in the lower positioning ring and is abutted against the permanent magnet during detection; the upper cover is arranged above the upper positioning ring and is in threaded sealing connection with the probe shell and used for pressing the permanent magnet downwards; the joint is in threaded connection with the upper cover.
3. The electromagnetic ultrasonic probe according to claim 2, wherein the magnet housing, the permanent magnet and the upper cover are provided with center holes for passing through wires connecting the detection coil and the joint.
4. The electromagnetic ultrasound probe of claim 2, wherein the upper cover is provided with an external thread and the probe housing is provided with an internal thread matching the external thread.
5. The electromagnetic ultrasound probe of claim 2, wherein the detection coils are copper wire wound coils or PCB printed circuits.
6. The electromagnetic ultrasound probe of claim 3, wherein the connector is disposed in a central hole of the upper cover for screw sealing.
7. The electromagnetic ultrasonic probe according to claim 1, wherein a plurality of spring positioning holes are respectively formed on the end surfaces of the upper positioning ring and the lower positioning ring, and both ends of the compression spring are respectively connected with the spring positioning holes of the upper positioning ring and the lower positioning ring.
8. The electromagnetic ultrasound probe of claim 7, wherein the number of spring positioning holes is 4-12.
9. The electromagnetic ultrasound probe of claim 1, wherein the thickness of the lower bottom surface of the magnet housing is 0.5-1 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020072049.9U CN211877877U (en) | 2020-01-14 | 2020-01-14 | Electromagnetic ultrasonic probe with auxiliary assembling and disassembling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020072049.9U CN211877877U (en) | 2020-01-14 | 2020-01-14 | Electromagnetic ultrasonic probe with auxiliary assembling and disassembling device |
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| CN211877877U true CN211877877U (en) | 2020-11-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155978A (en) * | 2021-04-26 | 2021-07-23 | 苏州博昇科技有限公司 | Electromagnetic ultrasonic probe positioning and placing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155978A (en) * | 2021-04-26 | 2021-07-23 | 苏州博昇科技有限公司 | Electromagnetic ultrasonic probe positioning and placing device |
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