CN212780662U - Probe assembly, ultrasonic detection mechanism and ultrasonic flaw detector - Google Patents

Abstract

The utility model discloses a probe assembly, include: the ultrasonic flaw detector comprises a base, an electromagnetic ultrasonic probe and a universal connecting piece, wherein the base is used for being connected with the tail end of a mechanical arm of the ultrasonic flaw detector, and the electromagnetic ultrasonic probe is rotationally fixed on the base through the universal connecting piece. The utility model also discloses an ultrasonic detection mechanism and the appearance of detecting a flaw with above-mentioned probe assembly to and have the appearance of detecting a flaw of above-mentioned ultrasonic detection mechanism. The utility model discloses can improve the accuracy of testing result.

Description

Probe assembly, ultrasonic detection mechanism and ultrasonic flaw detector

Technical Field

The utility model relates to an ultrasonic inspection technical field especially relates to a probe unit, an ultrasonic detection mechanism, an ultrasonic flaw detector that has this probe unit and an ultrasonic flaw detector that has this ultrasonic detection mechanism that have this probe unit.

Background

The ultrasonic flaw detector can detect internal defects of a material by utilizing the influence of acoustic property difference of the material and the defects on ultrasonic wave propagation, and is widely applied to detection of welding seams, surface defects and the like of metal parts, particularly magnetic metal parts such as iron.

When the ultrasonic flaw detector works, a probe of the ultrasonic flaw detector needs to be suspended above the surface of the measured magnetic metal piece, ultrasonic waves are transmitted to the measured magnetic metal piece under the control of the controller, and echoes reflected by the measured magnetic metal piece are received. The ultrasonic flaw detector identifies the defect state in the effective detection area in the detected magnetic metal piece by analyzing the echo characteristics. The ultrasonic flaw detector controls the probe to scan the surface of the measured magnetic metal piece through a motion mechanism (generally a mechanical arm), and then the whole measured magnetic metal piece is scanned.

In order to ensure the accuracy of the detection result of the ultrasonic flaw detector, the axial direction of a probe of the ultrasonic flaw detector is generally required to be perpendicular to the surface of the measured magnetic metal piece. However, when the probe is controlled by the motion mechanism of the ultrasonic flaw detector and is scanned on the surface of the magnetic metal piece to be detected, due to the existence of errors of the motion mechanism, it is often difficult to ensure that the axial direction of the probe of the ultrasonic flaw detector is perpendicular to the surface of the magnetic metal piece to be detected, and thus the accuracy of the detection result of the ultrasonic flaw detector is affected.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a probe assembly can make the probe move through all the time keep with by survey magnetic metal piece surface vertical to improve the accuracy of ultrasonic flaw detector testing result.

The purpose of the utility model is realized by adopting the following technical scheme:

a probe assembly, comprising: the ultrasonic flaw detector comprises a base, an electromagnetic ultrasonic probe and a universal connecting piece, wherein the base is used for being connected with the tail end of a mechanical arm of the ultrasonic flaw detector, and the electromagnetic ultrasonic probe is rotatably arranged on the base through the universal connecting piece.

Preferably, the universal connecting piece includes a bearing seat and a ball bearing, the bearing seat is fixed on the base, a ball head of the ball bearing is arranged in a ball head groove of the bearing seat, and a bearing end of the ball bearing is fixedly connected with the electromagnetic ultrasonic probe.

Preferably, the electromagnetic ultrasonic probe is provided with a threaded hole, and the bearing end of the ball bearing is in threaded connection with the threaded hole.

Preferably, the bearing housing is detachably fixed to the base.

Preferably, the outer peripheral wall of the electromagnetic ultrasonic probe is provided with a flexible protective layer; or, the probe assembly further comprises a plurality of distance measuring sensors arranged on the base at intervals.

Preferably, the number of the electromagnetic ultrasonic probes is more than one, each electromagnetic ultrasonic probe is matched with a universal connecting piece, and the distance between every two adjacent universal connecting pieces on the base enables the two corresponding electromagnetic ultrasonic probes to be in non-contact in the rotating process.

In order to solve the same technical problem, the utility model also provides an ultrasonic detection mechanism, include: the base is detachably connected with the tail end of a mechanical arm of the ultrasonic flaw detector through the quick-release assembly.

Preferably, the quick-release part comprises a base, a quick-release part and a clamping part, the bottom end of the base is used for being connected with the tail end of a mechanical arm of the flaw detector, a mounting groove is formed in the top end of the base, a through cavity is formed in the wall of the mounting groove, one end of the quick-release part is fixedly connected with the base, the other end of the quick-release part is slidably inserted into the mounting groove, and a clamping groove matched with the through cavity in position is formed in the outer wall of the quick-release part; the buckle piece comprises a rotating shaft fixed in the through cavity, a pressing plate pivoted on the rotating shaft and an elastic element arranged on the mounting groove, and the elastic element is used for providing restoring force for the pressing plate so that the bottom of the pressing plate is in clamping fit with the clamping groove.

In order to solve the same technical problem, the utility model also provides an ultrasonic flaw detector, this ultrasonic flaw detector include foretell probe assembly.

In order to solve the same technical problem, the utility model also provides an ultrasonic flaw detector, this ultrasonic flaw detector includes foretell ultrasonic detection mechanism.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the electromagnetic ultrasonic probe of the probe assembly provided by the embodiment of the utility model can be rotatably arranged on the base which can be connected with the end of the mechanical arm through the universal connecting piece, so that on one hand, the mechanical arm can realize the movement of the electromagnetic ultrasonic probe fixed on the base by driving the base to move, and the electromagnetic ultrasonic probe can move on the surface of an object to be detected along with a detection route in the detection process; on the other hand, when the electromagnetic ultrasonic probe moves to the target position, the ferromagnetism formed by the electromagnetic ultrasonic probe, the electromagnetic ultrasonic probe can be promoted to change the posture of the electromagnetic ultrasonic probe along with the radian of the surface of the measured magnetic metal piece so as to finally ensure that the axial direction of the electromagnetic ultrasonic probe is vertical to the surface of the measured magnetic metal piece, the electromagnetic ultrasonic probe is connected with the base through the universal connecting piece, so that the steering of the electromagnetic ultrasonic probe is not blocked in the posture adjustment process, so as to realize the self-adaptive compensation of the attitude deviation of the surface of the tested magnetic metal piece with different planeness by the electromagnetic ultrasonic probe in the detection process, reduce the adverse effect of the error of the motion mechanism of the ultrasonic flaw detector on the detection precision, therefore, the electromagnetic ultrasonic probe is ensured to keep the axial direction thereof to be vertical to the surface of the measured magnetic metal piece all the time during moving, and the accuracy of the ultrasonic flaw detector on the detection results of the magnetic metal pieces in different shapes is improved.

Furthermore, the embodiment of the utility model provides an ultrasonic detection mechanism not only makes it carry out more accurate detection to magnetic metal spare through probe assembly's optimization setting, but also has realized installing and removing of probe assembly and maintain through quick detach subassembly to promote its wholeness ability, also make the performance promotion of the appearance of detecting a flaw that has this ultrasonic detection mechanism.

Drawings

Fig. 1 is a schematic structural diagram of a probe assembly according to a first embodiment of the present invention;

fig. 2 is a schematic view illustrating an assembly between an electromagnetic ultrasonic probe and a universal connector according to a first embodiment of the present invention;

fig. 3 is a schematic view of a rotation state of an electromagnetic ultrasonic probe rotatably connected to a universal connector according to an embodiment of the present invention.

Fig. 4 is a schematic view of the overall structure of an ultrasonic detection mechanism in the second embodiment of the present invention;

fig. 5 is an exploded view of an ultrasonic detection mechanism according to a second embodiment of the present invention;

FIG. 6 is a partial enlarged view of the portion B in FIG. 4;

fig. 7 is a schematic structural view of a quick release assembly in an unassembled state according to a second embodiment of the present invention;

fig. 8 is a cross-sectional view of the quick release assembly in an assembled state according to a second embodiment of the present invention;

fig. 9 is a schematic structural view of a base in a second embodiment of the present invention;

fig. 10 is an exploded view of a base according to a second embodiment of the present invention;

fig. 11 is a cross-sectional view of a base in a second embodiment of the present invention;

fig. 12 is a schematic structural view of a quick release member and an elastic adjustment member according to a second embodiment of the present invention;

fig. 13 is an exploded view of the quick release member and the elastic adjustment member according to the second embodiment of the present invention;

FIG. 14 is an enlarged view of a portion of FIG. 9 at A;

in the figure: 100. a probe assembly; 200. a quick release assembly; 300. an ultrasonic detection mechanism; 1. a base; 11. mounting holes; 12. positioning a groove; 2. an electromagnetic ultrasonic probe; 21. a threaded hole; 3. a universal connection member; 31. a bearing seat; 32. a ball bearing; 321. a ball head; 322. a bearing end; 4. a screw; 41. a spring washer; 5. a base; 51. mounting grooves; 52. a cavity is communicated; 6. a quick-release member; 61. a card slot; 62. a groove; 621. a first annular outer wall; 622. a first table top; 623. a second annular outer wall; 624. a second table top; 625. a third annular outer wall; 626. an inner wall; 627. a first cavity; 628. a second cavity; 63. a weight reduction groove; 7. a fastener; 71. a rotating shaft; 711. a retainer ring; 72. pressing a plate; 73. an elastic element; 8. an elastic adjustment member; 81. a pillar; 811. an annular recess; 82. a pressure spring; 83. a limiting ring; 84. an annular cap; 9. a photoelectric switch; 91. a photoelectric switch base; 92. and (4) inserting sheets.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

the first embodiment is as follows:

the embodiment is regarded as the utility model provides a preferred embodiment, provides the probe subassembly 100 as shown in fig. 1, and this probe subassembly 100 is as the detection part of ultrasonic flaw detector, and it can be connected with the arm end-to-end of ultrasonic flaw detector when using, then realizes the detection to being surveyed magnetic metal spare under the drive of arm.

Specifically, probe assembly 100 includes base 1, electromagnetism ultrasonic transducer 2 and universal joint spare 3, and wherein, base 1 can be dismantled through quick detach subassembly 200 and ultrasonic flaw detector's arm end between and be connected, and electromagnetism ultrasonic transducer 2 then can rotationally set up on base 1 through universal joint spare 3. Therefore, on one hand, the mechanical arm can drive the base 1 to move so as to realize the movement of the electromagnetic ultrasonic probe 2 fixed on the base 1, so that the electromagnetic ultrasonic probe 2 can move on the surface of the detected magnetic metal piece along with a detection route in the detection process; on the other hand, after the electromagnetic ultrasonic probe 2 moves to the target position, the ferromagnetism generated by the electromagnetic ultrasonic probe 2 due to the self-working can cause the electromagnetic ultrasonic probe 2 to change the posture of the electromagnetic ultrasonic probe 2 along with the radian of the surface of the measured magnetic metal piece, so that the axial direction of the electromagnetic ultrasonic probe 2 is finally vertical to the surface of the measured magnetic metal piece, and the electromagnetic ultrasonic probe 2 is connected with the base 1 through the universal connecting piece 3, thereby ensuring that the steering of the electromagnetic ultrasonic probe 2 is not blocked in the posture adjustment process, realizing the self-adaptive compensation of the electromagnetic ultrasonic probe 2 on the posture deviation of the surface of the measured metal piece with different planeness in the detection process, reducing the adverse effect of the motion mechanism error of the ultrasonic flaw detector on the detection precision, and ensuring that the electromagnetic ultrasonic probe 2 is always vertical to the surface of the measured magnetic metal piece in the axial direction during the movement process, the accuracy of the ultrasonic flaw detector for the detection results of the magnetic metal pieces in different shapes is improved.

The universal connector 3 is used as a device for connecting the electromagnetic ultrasonic probe 2, and the structure of the universal connector can be diversified after the requirement of the rotation angle range of the electromagnetic ultrasonic probe 2 is ensured. Preferably, in order to reduce the cost and achieve simple installation of a plurality of electromagnetic ultrasonic probes 2 on one base 1, as shown in fig. 2, the universal joint 3 used in the present embodiment includes a bearing seat 31 and a ball bearing 32. The bearing seat 31 is fixed on the base 1, the ball 321 of the ball bearing 32 is disposed in the ball groove of the bearing seat 31, and the bearing end 322 of the ball bearing 32 is fixedly connected with the electromagnetic ultrasonic probe 2, so as to realize the multi-angle rotation of the electromagnetic ultrasonic probe 2 as shown in fig. 3.

In order to improve the detection efficiency of the ultrasonic flaw detector, as shown in fig. 1, preferably, more than one electromagnetic ultrasonic probe 2 may be disposed on the base 1, so as to implement multi-point detection, thereby improving the overall detection efficiency. In order to improve the detection efficiency and the accuracy of the detection result of the ultrasonic flaw detector, each electromagnetic ultrasonic probe 2 can be matched with one universal connecting piece 3, and the distance between two adjacent universal connecting pieces 3 on the base 1 is ensured so that the two electromagnetic ultrasonic probes 2 corresponding to the two universal connecting pieces 3 are in non-contact in the rotation process, so that the collision between the electromagnetic ultrasonic probes 2 is avoided, on one hand, the damage rate of the electromagnetic ultrasonic probes 2 in the detection process can be reduced, and on the other hand, the accuracy of the detection result can be enhanced.

For convenience of the assembly, disassembly and maintenance of the electromagnetic ultrasonic probe 2, the electromagnetic ultrasonic probe 2 may be detachably connected to the ball bearing 32. Preferably, as shown in fig. 2, a threaded hole 21 may be provided on the electromagnetic ultrasonic probe 2, and the bearing end 322 of the ball bearing 32 is fixed in the threaded hole 21 by a screw connection. It is understood that other detachable connections may be used in other embodiments.

To facilitate the assembly, disassembly and maintenance of the universal joint 3, the bearing seat 31 may be detachably fixed to the base 1, for example. Preferably, as shown in fig. 1, the base 1 may be provided with a mounting hole 11, the bearing seat 31 may be provided with a threaded hole 21, and the bearing seat 31 may be stably fixed to the base 1 by a screw 4 engaged with the threaded hole 21 and a spring washer 41. Certainly, can also set up the constant head tank 12 with bearing frame 31 bottom shape assorted in base 1 and the relative one side of bearing frame 31, be convenient for quick location installation on the one hand, on the other hand also can play limiting displacement to bearing frame 31, guarantees its installation relative position, reduces measuring error.

In order to protect the electromagnetic ultrasonic probe 2, a flexible protective layer may be provided on the outer peripheral wall of the electromagnetic ultrasonic probe 2.

Of course, in order to adjust the overall posture of the probe assembly 100, for example, a plurality of distance measuring sensors, such as laser distance measuring sensors, may be disposed on the base 1 at intervals, so that the ultrasonic flaw detector may monitor the position and posture of the probe assembly 100 in time, and the position and posture of the probe assembly 100 may be adjusted by the mechanical arm. Of course, the probe assembly 100 can keep the optimal position with the magnetic metal part to be detected all the time in the process of continuously performing detection operation by adjusting the position and the posture, so that the collision possibility is reduced, and collision prevention protection is performed on all parts in the probe assembly 100 and the magnetic metal part to be detected.

Example two:

as another preferred embodiment provided by the present invention, an ultrasonic detection mechanism 300 for a flaw detector is provided, as shown in fig. 4, in addition to the probe assembly 100 of the first embodiment, the ultrasonic detection mechanism 300 is additionally provided with a quick release assembly 200, so that on one hand, the probe assembly 100 can be stably connected with the end of a mechanical arm of the flaw detector, and on the other hand, the assembly, disassembly and maintenance of the probe assembly 100 can be facilitated.

Specifically, the quick release assembly 200 includes a base 5, a quick release member 6 and a snap member 7. Wherein, the bottom of base 5 need form firm the connection with the arm end of flaw detector when using, and the connection between the two can be realized through the undetachable mode of modes such as welding, certainly also can realize through removable modes such as threaded connection. Preferably, the bottom end of the base 5 is set to be the flange structure in the embodiment to realize the end connection of the base 5 and the mechanical arm, so that on one hand, the stability of the end connection of the base 5 and the mechanical arm can be ensured, the base 5 is prevented from shaking or even falling off in the flaw detection process, and on the other hand, the base 5 and the end of the mechanical arm can be conveniently assembled and disassembled for maintenance after the flaw detector is used for a long time.

In this embodiment, the other part of the quick release assembly 200, i.e. the quick release member 6, is connected to the probe assembly 100 at one end in a stable manner, and the connection between the two parts can be various connections such as the base 5 and the end of the robot arm. Preferably, the quick release member 6 of the present embodiment is threadedly connected to the probe assembly 100. As shown in FIG. 1, a plurality of mounting holes 11 are formed in the base 1 of the probe assembly 100, and the quick release member 6 and the probe assembly 100 can be detachably and stably connected only by the screws 4, the spring washers 41 and corresponding tools during mounting.

After the quick release part 6 and the base 5 are connected to the corresponding probe assembly 100 and the end of the mechanical arm, respectively, only the other end of the quick release part 6 needs to be inserted into the slot of the mounting slot 51 formed at the top end of the base 5, and the other end can be inserted into the mounting slot 51 in a sliding manner, so that the quick release part 6 can obtain a pushing force entering the mounting slot 51 and a pulling force leaving the mounting slot 51 under an external force (for example, a human hand provides a pushing force or a pulling force to the quick release part 6 through the probe assembly 100).

As shown in fig. 5 to 9, a through cavity 52 is opened on a wall of the mounting groove 51, and a locking member 7 having a rotating shaft 71, a pressing plate 72 and an elastic element 73 is provided on the through cavity 52, and a locking groove 61 matched with the through cavity 52 is provided on an outer wall of the quick release member 6. Therefore, when the quick release member 6 is pushed to enter the mounting groove 51 and contact the pressing plate 72, since the pressing plate 72 is pivoted on the rotating shaft 71 fixed in the through cavity 52, the pressing plate 72 can overcome the elastic force of the elastic element 73 arranged on the mounting groove 51 and rotate with the further insertion of the quick release member 6 until the bottom of the clamping groove 61 on the quick release member 6 is staggered with the bottom of the pressing plate 72, and at this time, the pressing plate 72 only receives the restoring force exerted by the elastic element 73 and rotates under the restoring force until the bottom of the pressing plate 72 is in clamping fit with the clamping groove 61, so as to stably connect the quick release member 6 to the base 5, thereby realizing the stable connection of the probe assembly 100 and the tail end of the mechanical arm. Of course, in order to improve the stable connection between the rotating shaft 71 and the through cavity 52, as shown in fig. 10, a retaining ring 711 may be added to the installation of the rotating shaft 71. The elastic element 73 is a torsion spring in this embodiment, but may be other elastic bodies such as a spring.

When the probe assembly 100 needs to be disassembled from the tail end of the mechanical arm to replace or maintain the probe assembly 100, only a pressing force needs to be applied to the pressing plate 72 to drive the pressing plate 72 to rotate, so that the bottom of the pressing plate 72 can push the clamping groove 61 to move towards the bottom of the mounting groove 51 until the bottom of the pressing plate 72 moves out of the clamping groove 61, after the bottom of the pressing plate 72 moves out of the clamping groove 61, the quick-release piece 6 can be pulled out of the mounting groove 51 by applying a pulling force to the probe assembly 100, the quick-release piece 6 is quickly separated from the base 5, and therefore the quick separation of the probe assembly 100 and the tail end of the mechanical arm is realized, and the assembly and disassembly operation efficiency is improved.

In order to prevent the buckling member 7 from failing due to improper operation or use during the assembling and disassembling process, a limiting member may be disposed, for example, to limit each component of the buckling member 7, especially the pressing plate 72, so that it cannot be separated from the preset movable range. For example, the wall thickness between the upper end surface of the mounting groove 51 and the wall of the through cavity 52 can be increased to facilitate the arrangement of a limiting groove thereon, so that the end of the pressing plate 72 can be slidably arranged in the limiting groove.

In addition, the installation groove 51 and the quick-release member 6 are provided with shapes, such as asymmetrical arrangement of length and width, so that the guide and positioning during installation are convenient, and quick installation is realized. Of course, this can also be achieved by providing a guide between the mounting slot 51 and the quick release 6.

In order to further improve the connection stability between the quick release member 6 and the base 5, for example, as shown in fig. 8, 12 and 13, an elastic adjusting member 8 may be further disposed between the quick release member 6 and the bottom of the mounting groove 51, and when the locking groove 61 is locked with the bottom of the pressing plate 72, the elastic adjusting member 8 may provide a pushing force to the locking groove 61 opposite to the bottom acting force of the pressing plate 72, so that the bottom of the pressing plate 72 is in abutting engagement with the locking groove 61, and thus, the quick release member 6 may be more stably fixed to the base 5 under two opposite acting forces related to the moving direction thereof.

The arrangement of the elastic adjustment member 8 may be varied, and in order to fully utilize the inner space of the installation groove 51, for example, the resilient adjustment member 8 may be provided to include a post 81 and a compression spring 82, and the end surface of the other end of the quick release member 6 is recessed to form a recess 62, one end of the strut 81 is slidably inserted into the groove 62 and is connected with the groove bottom of the groove 62 through a compression spring 82, thus, as the quick release member 6 enters the mounting groove 51, the elastic force generated by the compression deformation of the compression spring 82 will gradually push the other end of the strut 81 to move towards the bottom of the mounting groove 51 until the other end abuts against the bottom of the mounting groove 51, and on the other hand, after the bottom of the pressing plate 72 is engaged with the engaging groove 61, the elastic force will push the quick release member 6 to move towards the direction away from the bottom of the mounting groove 51 through the bottom of the groove 62, thereby, a pulling force opposite to the pressing force of the pressing plate 72 is formed on the engaging groove 61, and the engaging groove 61 is brought into contact with the bottom of the pressing plate 72.

In order to make it possible for the compression spring 82 to exert a uniform force on the strut 81 and the groove bottom of the groove 62, it is preferable to provide the strut 81 in a barrel shape, and correspondingly, the groove 62 in a ring shape, and the compression spring 82 is sleeved on the inner wall 626 of the groove 62. In this way, when the quick release member 6 is mounted and removed, the external force applied to the quick release member 6 can reduce the shaking of each component in the mounting and removing process by the internal force of the compression spring 82, the support 81 and the groove 62, so that on one hand, the damage of each component can be avoided, on the other hand, the mounting and removing operation can be conveniently carried out by a person, and the mounting and removing process of the probe assembly 100 is easy and safe.

Further, the groove 62 may be configured as an annular step structure, and the groove 62 has a first annular outer wall 621, a first mesa 622, a second annular outer wall 623, a second mesa 624 and a third annular outer wall 625, which are sequentially connected in the direction from the notch to the bottom of the groove. A first cavity 627 for sliding the pressure spring 82 and the end of the support 81 is formed between the third annular outer wall 625 and the inner wall 626 of the groove 62, the limit ring 83 is disposed on the outer wall of the support 81, the annular cap 84 is disposed on the first table 622, a second cavity 628 for sliding the limit ring 83 is enclosed between the annular cap 84 and the second annular outer wall 623, the second table 624 and the outer wall of the support 81, and the other end of the support 81 slidably protrudes out of the annular cap 84.

In the above arrangement, by limiting the movement range of the limiting ring 83 on the supporting column 81 in the second cavity 628 and combining the assembling relationship of other components, on one hand, the supporting column 81, the compression spring 82 and the quick release member 6 can be connected into a whole, so that the assembling and disassembling links of the supporting column 81, the compression spring 82 and the quick release member 6 in the assembling and disassembling process of the probe assembly 100 can be omitted, the operation efficiency can be further improved, the connection tightness among the components of the quick release assembly 200 can be improved, the integrity of the quick release assembly 200 can be enhanced, and the stability and the safety of the quick release assembly 200 can be further improved; on the other hand, the moving track range of the support 81 and the quick release member 6 in the assembling and disassembling process can be indirectly limited, so that the connection position of each component in the quick release assembly 200 can form good buffer, thereby protecting each component in the quick release assembly 200 on the one hand and protecting the tested piece on the other hand. Thus, the stability of the performance of the quick release assembly 200 is improved, the service life of the quick release assembly 200 is prolonged, and the integrity of a tested piece is ensured.

To facilitate inspection and maintenance of the posts 81, compression springs 82, and grooves 62, the cap may be removably coupled to the first table 622, as an example. Preferably, threads are provided on the first annular outer wall 621, and the annular cap 84 is screwed onto the first table 622. The shape of the two ends of the ring-shaped cap 84 can be adjusted according to specific requirements. For example, the end surface of the bottom end of the ring cap 84 may be made flush with the notch of the groove 62, while the top end of the ring cap 84 protrudes along the second annular outer wall 623 to finally form the ring cap 84 into a stepped shape. Of course, the top end of the annular cap 84 extending along the second annular outer wall 623 can limit the position of the ring 83, so that the position of each relevant component in the quick release assembly 200 during the assembly and disassembly process can reach an ideal state, and on the other hand, the cap can be conveniently limited to facilitate the assembly of the cap and further reduce the shaking of the cap caused by collision.

The stop collar 83 is a part that frequently collides during the assembly and disassembly process of the quick release assembly 200, and for the convenience of maintenance and the enhancement of the service life thereof, for example, the connection between the stop collar 83 and the support 81 may be a detachable connection manner, and the stop collar 83 itself has certain elasticity. Preferably, the outer wall of the pillar 81 may be provided with an annular recess 811, and the limiting ring 83 may be a snap spring sleeved on the annular recess 811, so that the above effects are achieved and the cost is reduced.

Of course, on the basis of ensuring the mechanical performance (such as strength and rigidity) of the quick release member 6, the weight of the quick release member 6 can be controlled by forming the lightening groove 63, so as to reduce the collision of the quick release member 6 caused by mass inertia, and further perform collision avoidance on each component in the quick release assembly 200.

In addition, a photoelectric switch 9 is provided in the ultrasonic detection mechanism 300 so as to monitor the positional relationship between the base 1 and the pedestal 5. Specifically, the outer wall of the base 5 is provided with a photoelectric switch seat 91, and the bottom surface of the base 1 is provided with an insert 92. If the base 1 moves towards the base 5 due to external force or misoperation and other reasons in the running process of equipment and flaw detectors, if the movement of the base 1 exceeds a preset range, the inserting piece 92 enters the photoelectric switch base 91 to trigger the photoelectric switch 9, and a signal formed by the photoelectric switch 9 is fed back to the flaw detector, so that alarm or other processing is performed. Moreover, the elastic adjusting piece 8 can further protect the base 1 by the buffer effect formed by the quick-release piece 6, so that the probe assembly 100 and the tested magnetic metal piece are protected by the base and the photoelectric switch 9.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims (10)

1. A probe assembly, comprising: the ultrasonic flaw detector comprises a base, an electromagnetic ultrasonic probe and a universal connecting piece, wherein the base is used for being connected with the tail end of a mechanical arm of the ultrasonic flaw detector, and the electromagnetic ultrasonic probe is rotatably arranged on the base through the universal connecting piece.

2. The probe assembly of claim 1, wherein the universal connector comprises a bearing seat and a ball bearing, the bearing seat is fixed on the base, a ball of the ball bearing is arranged in a ball groove of the bearing seat, and a bearing end of the ball bearing is fixedly connected with the electromagnetic ultrasonic probe.

3. The probe assembly of claim 2, wherein the electromagnetic ultrasound probe has a threaded bore, and wherein the bearing end of the ball bearing is threaded into the threaded bore.

4. The probe assembly of claim 2, wherein the bearing mount is removably secured to the base.

5. The probe assembly of claim 1, wherein the outer peripheral wall of the electromagnetic ultrasound probe is provided with a flexible protective layer;

or, the probe assembly further comprises a plurality of distance measuring sensors arranged on the base at intervals.

6. The probe assembly according to any one of claims 1 to 5, wherein the number of the electromagnetic ultrasonic probes is more than one, each electromagnetic ultrasonic probe is matched with a universal connector, and the distance between two adjacent universal connectors on the base enables two corresponding electromagnetic ultrasonic probes to be in non-contact during rotation.

7. An ultrasonic detection mechanism, comprising: the quick release assembly and the probe assembly of any one of claims 1 to 6, wherein the base is detachably connected with the end of the mechanical arm of the ultrasonic flaw detector through the quick release assembly.

8. The ultrasonic detection mechanism of claim 7, wherein the quick release member comprises a base, a quick release member and a fastener, the bottom end of the base is used for connecting with the end of the mechanical arm of the flaw detector, the top end of the base is provided with a mounting groove, a through cavity is opened on the wall of the mounting groove, one end of the quick release member is fixedly connected with the base, the other end of the quick release member is slidably inserted into the mounting groove, and the outer wall of the quick release member is provided with a clamping groove matched with the through cavity; the buckle piece comprises a rotating shaft fixed in the through cavity, a pressing plate pivoted on the rotating shaft and an elastic element arranged on the mounting groove, and the elastic element is used for providing restoring force for the pressing plate so that the bottom of the pressing plate is in clamping fit with the clamping groove.

9. An ultrasonic flaw detector, comprising: a probe assembly according to any one of claims 1 to 6.

10. An ultrasonic flaw detector, comprising: the ultrasonic detection mechanism of claim 7 or 8.

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