CN211504047U - Electromagnetic ultrasonic transverse wave thickness measuring transducer - Google Patents
Electromagnetic ultrasonic transverse wave thickness measuring transducer Download PDFInfo
- Publication number
- CN211504047U CN211504047U CN202020286528.0U CN202020286528U CN211504047U CN 211504047 U CN211504047 U CN 211504047U CN 202020286528 U CN202020286528 U CN 202020286528U CN 211504047 U CN211504047 U CN 211504047U
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- shell
- fixed
- sleeve
- pressure applying
- pipe barrel
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Abstract
The utility model discloses an electromagnetic ultrasonic transverse wave thickness measuring transducer, which comprises a permanent magnet, wherein the permanent magnet is fixed in a protective shell through a first screw, the protective shell is fixed in a shell through a second screw, a transduction coil is wound on the permanent magnet, the protective shell is assembled and fixed with one end of an insertion rod, and the other end of the insertion rod passes through a circuit board and the shell; one end of the insertion rod penetrates out of the shell, and the end of the insertion rod, which penetrates out of the shell, is inserted into the inner pipe of the pipe barrel and can axially slide with the pipe barrel and can not be circumferentially and rotatably assembled with the pipe barrel; the exterior of the barrel can be fixed on an external device or arranged in the handle; the inner wall of the sleeve is a taper hole with the diameter gradually increased from one end far away from the shell to one end close to the shell, the inner wall of the taper hole is tightly pressed with the ball, the ball can be spherically and rollably arranged at one end of the pressure applying rod, and the other end of the pressure applying rod penetrates through the limiting ring and then is assembled and fixed with one end face of the locking block; the locking block is arranged in the pressure applying hole in a sliding way in the axial direction of the pressure applying rod, the pressure applying hole is arranged on the side wall of the pipe barrel, and the limiting ring is fixed in the pressure applying hole.
Description
Technical Field
The utility model relates to an electromagnetic ultrasonic thickness measurement technique especially relates to an electromagnetic ultrasonic transverse wave thickness measurement transducer.
Background
The electromagnetic ultrasonic transducer is the core of the application of the electromagnetic ultrasonic detection technology, and the probe part is the core component for generating and receiving ultrasonic waves. The coil is arranged on the near surface of the workpiece, and alternating current is applied to the coil to form eddy current inside the near surface of the workpiece; under the bias action of the magnetic field, alternating eddy current is subjected to alternating Lorentz force; the eddy current particles form mechanical vibration under the action of alternating Lorentz force to generate ultrasonic waves.
The chinese utility model patent with publication number CN206876135U discloses an electromagnetic ultrasonic transverse wave thickness measuring transducer, which has a very simple structure and relatively stable performance through actual measurement by the applicant. But because of the high price of such transducers, companies are not in high-volume purchase. There are two cases in actual use: the hand-held receiving device is mainly suitable for small-range and small-quantity detection; the other is mounted on a guide rail or a mechanical arm and is driven by a machine to carry out continuous detection, and the other is mainly used on a production line. However, due to the existing system, mechanical movement and other errors, some defective products still need to be checked again manually for confirmation. In this case, the probe mounted on the arm or robot is usually removed and then mounted on the hand-held device, which is the way in which the above-mentioned patent is used. However, the above patent adopts a mode similar to that of clamp and screw connection, which is not only inconvenient to disassemble and assemble, but also can wear threads to cause locking failure after disassembling and assembling for several times.
The applicant provides an electromagnetic ultrasonic transverse wave thickness measurement and transduction device which is convenient to disassemble and assemble.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide an electromagnetic ultrasonic transverse wave thickness measuring transducer.
In order to achieve the purpose, the utility model provides an electromagnetic ultrasonic transverse wave thickness measuring transducer, which comprises a permanent magnet and a sleeve, wherein the permanent magnet is fixed in a protective shell through a first screw, the protective shell is fixed in a shell through a second screw, a transduction coil is wound on the permanent magnet, the protective shell is fixedly assembled with one end of an insertion rod, and the other end of the insertion rod passes through a circuit board and the shell;
one end of the insertion rod penetrates out of the shell, and the end of the insertion rod, which penetrates out of the shell, is inserted into the inner pipe of the pipe barrel and can axially slide with the pipe barrel and can not be circumferentially and rotatably assembled with the pipe barrel;
the outer part of the pipe barrel is fixed on an external device or is arranged in the handle, and the pipe barrel is sleeved outside the pipe barrel; the inner wall of the sleeve is a taper hole with the diameter gradually increased from one end far away from the shell to one end close to the shell, the inner wall of the taper hole is tightly pressed with the ball, the ball can be spherically and rollably arranged at one end of the pressure applying rod, and the other end of the pressure applying rod penetrates through the limiting ring and then is assembled and fixed with one end face of the locking block; the locking block is arranged in the pressure applying hole in a sliding manner in the axial direction of the pressure applying rod, the pressure applying hole is arranged on the side wall of the pipe barrel, and the limiting ring is fixed in the pressure applying hole.
Preferably, the insertion rods are positioned on two sides of the circuit board and are assembled and fixed with one locking nut through screwing of threads.
Preferably, the insertion rod penetrates out of the outer wall of one end of the shell, and locking grooves are distributed along the axial direction of the insertion rod.
Preferably, the handle is provided with a hand-held groove.
Preferably, the pipe barrel is assembled and fixed with one end of the retaining sleeve through a spring ring far away from one end of the shell, two spring rings are respectively fixed at two ends of the spring, and the spring ring close to one end of the shell is in tight fit with the end part of the sleeve;
the handle and the end part of the sleeve are respectively fixed with an anti-rotation pin, the anti-rotation pin is inserted into the spring ring, one end of the sleeve, which is provided with the anti-rotation pin, is arranged in the retaining sleeve, and the outer wall of the end is provided with a rotation bulge.
Preferably, be provided with on the telescopic outer wall and rotate the arch, rotate protruding and the guide way block, the slidable assembly of setting on keeping the cover inner wall, the guide way includes the straight flute part parallel with the retaining sleeve axis, connects the spiral flute part of straight flute part and locking groove part, spiral distribution of spiral flute part is on keeping the cover inner wall, locking groove part is the recess to outer shell direction indent.
Preferably, a stress ring is mounted on a part of the pressure rod between the ball and the limit ring, and a wave spring is sleeved on a part of the pressure rod between the stress ring and the limit ring.
Preferably, the locking block is provided with a plurality of locking protrusions which are in snap fit with the locking grooves so as to fix the barrel and the insertion rod relatively in the axial direction.
Preferably, a stop ring is arranged on the outer side of one end of the barrel close to the shell and one end of the sleeve close to the shell.
The utility model has the advantages that: the utility model discloses simple structure through the quick assembly disassembly design between bobbin and the inserted bar, not only can make the probe part can quick assembly disassembly, but also can very conveniently adjust the axial length of bobbin and inserted bar to no matter install on the machine or handheld, all greatly increased the flexibility. Compared with the original design, the disassembly and assembly efficiency of the mode is at least increased by 3 times, and the mode has small abrasion and long service life. Compared with the cost which is increased by 2 to 3 times compared with the original mode of the handle and the inner rod, the cost is negligible because the labor is the most expensive cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of fig. 1 at F1.
Fig. 3 is a schematic structural view of the guide groove of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1 to 3, an electromagnetic ultrasonic transverse wave thickness measuring transducer includes a permanent magnet 210, the permanent magnet 210 is fixed in a protective shell 120 through a first screw 310, the protective shell 120 is fixed in a housing 110 through a second screw 320, a transduction coil is wound on the permanent magnet 200, the protective shell 120 is assembled and fixed with one end of a plug rod 330, and the other end of the plug rod 330 penetrates through a circuit board 220 and the housing 110. The present embodiment is an improvement on the basis of the chinese utility model patent with publication number CN206876135U, and the basic principle thereof is common knowledge, and the circuit board, the permanent magnet, the transducing coil, etc. are all the prior art, and can directly adopt the existing finished products and installation modes.
The insertion rod 330 is located at two sides of the circuit board 220 and is screwed and fixed with one locking nut 340 through threads, so that the circuit board is relatively fixed. The outer wall of one end of the insertion rod penetrating through the outer shell 110 is provided with locking grooves 331 distributed along the axial direction of the insertion rod, and one end of the insertion rod 330 penetrating through the outer shell 110 is inserted into the inner pipe 351 of the pipe barrel 350 and can be assembled with the inner pipe in an axial sliding and non-circumferential rotating manner;
the cartridge 350 may be externally mounted to an external device (e.g., an external machine) or it may be mounted within a handle 360 (e.g., for handheld use), and the handle 360 may be provided with a hand-held groove 361, wherein the hand-held groove 361 is adapted to be held by an operator. Of course, the handle may be a fixed part or structure that is fixed to the external machine.
The pipe barrel 350 is assembled and fixed with one end of the retaining sleeve 370 through a spring ring 411 far away from one end of the shell 110, the spring ring 411 is provided with two spring rings 411, the two spring rings 411 are respectively fixed at two ends of the spring 410, the spring ring 411 close to one end of the shell 110 is in press fit with the end of the sleeve 510, anti-rotation pins 420 are respectively fixed on the ends of the handle 360 and the sleeve 510, and the anti-rotation pins 420 are inserted into the spring rings 411 so as to limit the rotation of the spring rings 411 in the circumferential direction;
one end of the sleeve 510, which is provided with the anti-rotation pin 420, is installed in the retaining sleeve 370, a rotation protrusion 512 is arranged on the outer wall of the end, the rotation protrusion 512 is clamped and slidably assembled with a guide groove 371 arranged on the inner wall of the retaining sleeve 370, the guide groove 371 comprises a straight groove part 3711 parallel to the axis of the retaining sleeve, and a spiral groove part 3712 connecting the straight groove part 3711 with a locking groove part 3713, the spiral groove part 3712 is spirally distributed on the inner wall of the retaining sleeve 370, and the locking groove part 3713 is a groove recessed towards the direction of the outer shell 110.
When the sleeve is used, the sleeve 510 is pushed towards the handle direction, so that the rotating protrusion 512 firstly moves along the straight groove part 3711 and then enters the spiral groove part 3712, the sleeve 510 can rotate at a certain angle in the circumferential direction after entering the spiral groove part 3712, in this embodiment, the rotating protrusion 512 enters the locking groove part 3713, at the moment, the sleeve 510 is released, the sleeve is pushed towards the shell direction under the action of elastic force generated by compression of a spring of the sleeve, the rotating protrusion 512 is clamped in the locking groove part 3713, the sleeve 510 is axially locked, and the sleeve cannot be reset through the elastic force of the spring. While the spring is compressed and also twisted due to the sleeve rotation to store the torsion force.
When needing the sleeve to reset, promote the sleeve to the handle direction and keep two seconds for the sleeve rotates slightly under the torsion effect of spring, thereby makes rotation arch 512 rotate out locking groove portion 3713, releases the sleeve this moment, and the sleeve can reset under the axial thrust effect of spring, thereby drives the sleeve and resets.
The inner wall of the sleeve 510 is a taper hole 511, the diameter of which is gradually increased from one end close to the spring to one end close to the shell, the inner wall of the taper hole 511 is tightly pressed with the ball 630, the ball 630 can be spherically and rollably mounted at one end of the pressure applying rod 620, and the other end of the pressure applying rod 620 passes through the limiting ring 640 and then is assembled and fixed with one end face of the locking block 610; the locking block 610 is slidably mounted in the pressing hole 352 in the axial direction of the pressing rod 620, the pressing hole 352 is disposed on the sidewall of the barrel 350, the limiting ring 640 is fixed in the pressing hole 352, a stress ring 660 is mounted on a portion of the pressing rod 620 located between the balls 630 and the limiting ring 640, a wave spring 650 is sleeved on a portion of the pressing rod 620 located between the stress ring 620 and the limiting ring 640, and the wave spring 650 is used for generating an elastic force for the stress ring to prevent the stress ring from moving towards the locking block 610, so that when the balls are not subjected to pressure or the pressure is reduced, the wave spring 650 drives the pressing rod 620 to move towards the balls to drive the locking block to separate from the outer wall of the bayonet rod, and at this time, the bayonet rod can be driven to move in the axial direction of the inner tube 351, thereby adjusting the total length between the barrel 350 and the bayonet rod or pulling the barrel.
The locking block 610 is provided with a plurality of locking protrusions 611, and the locking protrusions 611 are engaged with the locking grooves 331 to fix the tube 350 and the insertion rod 330 in an axial direction, so as to complete the assembly and fixation of the tube 350 and the insertion rod 330.
In an initial state, the inner wall of the smaller diameter end of the tapered hole 511 is pressed against the ball, so that the pressing rod 620 is driven to drive the locking block 610 to press against the insertion rod 330, and the locking protrusion 611 and the locking recess 331 are tightly fitted. The plug rod is then axially fixed to the tube.
When the plugging rod needs to be detached from the pipe barrel, the sleeve 510 is pushed axially towards the handle until the rotating protrusion 512 enters the locking groove portion 3713, then the sleeve 510 is released, the sleeve 510 overcomes the thrust of the spring to axially withdraw and fix, the end with the larger diameter of the taper hole 511 is in contact with the ball, the wave spring drives the locking block to move upwards through the stressed belt and is separated from and not in contact with the plugging rod 330, and at the moment, the plugging rod is directly pulled out. In this embodiment, the tube 350, the locking block 610, and the like may be fixed to a device (a mobile machine, a robot arm, and the like) to which the insertion rod 330 is to be installed, so that the quick detachment may be achieved, and the fixation of the insertion rod is relatively stable. The design can greatly increase the disassembly efficiency of the insertion rod and the shell part, thereby reducing the labor cost greatly when in disassembly.
Preferably, a stop ring 520 is mounted on the outside of the barrel 350 near one end of the housing and the sleeve 510 near one end of the housing, said stop ring 520 limiting the maximum displacement of the sleeve 510 towards the housing, thereby preventing the sleeve from sliding out of the barrel 350.
The details of the present invention are well known to those skilled in the art.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. An electromagnetic ultrasonic transverse wave thickness measuring transducer comprises a permanent magnet and a sleeve, wherein the permanent magnet is fixed in a protective shell through a first screw, the protective shell is fixed in a shell through a second screw, an energy conversion coil is wound on the permanent magnet, the protective shell is assembled and fixed with one end of an insertion rod, and the other end of the insertion rod penetrates through a circuit board and the shell; the method is characterized in that:
one end of the insertion rod penetrates out of the shell, and the end of the insertion rod, which penetrates out of the shell, is inserted into the inner pipe of the pipe barrel and can axially slide with the pipe barrel and can not be circumferentially and rotatably assembled with the pipe barrel;
the outer part of the pipe barrel is fixed on an external device or is arranged in the handle, and the pipe barrel is sleeved outside the pipe barrel; the inner wall of the sleeve is a taper hole with the diameter gradually increased from one end far away from the shell to one end close to the shell, the inner wall of the taper hole is tightly pressed with the ball, the ball can be spherically and rollably arranged at one end of the pressure applying rod, and the other end of the pressure applying rod penetrates through the limiting ring and then is assembled and fixed with one end face of the locking block; the locking block is arranged in the pressure applying hole in a sliding manner in the axial direction of the pressure applying rod, the pressure applying hole is arranged on the side wall of the pipe barrel, and the limiting ring is fixed in the pressure applying hole.
2. The electromagnetic ultrasonic shear thickness measuring transducer of claim 1, wherein: the insertion rods are positioned on two sides of the circuit board and are assembled and fixed with one locking nut respectively through threads in a screwing mode.
3. The electromagnetic ultrasonic shear thickness measuring transducer of claim 1, wherein: the plug rod penetrates through the outer wall of one end of the shell, and locking grooves are distributed along the axial direction of the plug rod.
4. The electromagnetic ultrasonic shear thickness measuring transducer of claim 1, wherein: the handle is provided with a handheld groove.
5. The electromagnetic ultrasonic shear thickness measuring transducer of claim 1, wherein: the pipe barrel is assembled and fixed with one end of the retaining sleeve through the spring ring far away from one end of the shell, two spring rings are arranged and fixed at two ends of the spring respectively, and the spring ring close to one end of the shell is in tight fit with the end part of the sleeve;
the handle and the end part of the sleeve are respectively fixed with an anti-rotation pin, the anti-rotation pin is inserted into the spring ring, one end of the sleeve, which is provided with the anti-rotation pin, is arranged in the retaining sleeve, and the outer wall of the end is provided with a rotation bulge.
6. The electromagnetic ultrasonic shear thickness measuring transducer of claim 5, wherein: be provided with on telescopic outer wall and rotate the arch, rotate protruding and guide way block, the slidable assembly of setting on keeping the cover inner wall, the guide way includes with the straight flute part that keeps set axis parallel, connect the helicla flute part of straight flute part and locking groove part, helicla flute part spiral distribution is on keeping the cover inner wall, the locking groove part is the recess to the shell direction indent.
7. The electromagnetic ultrasonic shear thickness measuring transducer of claim 6, wherein: the part of the pressure rod between the ball and the limit ring is provided with a stress ring, and the part of the pressure rod between the stress ring and the limit ring is sleeved with a wave spring.
8. The electromagnetic ultrasonic shear thickness measuring transducer of claim 3, wherein: the locking block is provided with a plurality of locking bulges, and the locking bulges are assembled with the locking grooves in a clamping way so as to relatively fix the pipe barrel and the insertion rod in the axial direction.
9. The electromagnetic ultrasonic shear thickness measuring transducer of claim 1, wherein: and a stop ring is arranged on the outer side of one end of the pipe barrel close to the shell and one end of the sleeve close to the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020286528.0U CN211504047U (en) | 2020-03-10 | 2020-03-10 | Electromagnetic ultrasonic transverse wave thickness measuring transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020286528.0U CN211504047U (en) | 2020-03-10 | 2020-03-10 | Electromagnetic ultrasonic transverse wave thickness measuring transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211504047U true CN211504047U (en) | 2020-09-15 |
Family
ID=72402423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020286528.0U Expired - Fee Related CN211504047U (en) | 2020-03-10 | 2020-03-10 | Electromagnetic ultrasonic transverse wave thickness measuring transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211504047U (en) |
-
2020
- 2020-03-10 CN CN202020286528.0U patent/CN211504047U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200915 |