A pulsed eddy current probe with an encoder

Abstract

The utility model discloses a kind of pulse eddy current probe with encoder, belong to nondestructive testing technical field, including connecting assembly, support arm, encoding roller, brake assembly, measuring probe assembly, measuring probe assembly side surface is equipped with connecting assembly, connecting assembly side surface is connected with the one end of support arm, support arm other end portion side surface is equipped with encoding roller and brake assembly respectively. Solve the defect that the structure of existing detection equipment is high in operation redundancy, and the timeliness is poor when positioning, realize fast positioning without affecting detection effect.

Description

Technical Field

[0001] This utility model relates to the field of nondestructive testing technology, specifically to a pulse eddy current probe with an encoder. Background Technology

[0002] As an emerging non-destructive testing method, pulsed eddy current testing technology has seen its application in the industrial field deepen in recent years. With the increasing complexity of application scenarios, the market demands higher testing accuracy, especially for the precise location of defects.

[0003] Current mainstream pulsed eddy current testing systems primarily rely on two positioning methods: one is to draw a grid on the surface of the object before measurement, allowing for precise location identification during the testing process; the other is point-based positioning, where corroded areas are marked during measurement, and their coordinates are measured using rulers or similar tools. Both methods suffer from redundancy, operational complexity, and poor positioning timeliness, increasing the complexity of on-site work and contradicting the core advantages of pulsed eddy current technology: high efficiency and rapid detection.

[0004] Therefore, how to provide a pulse eddy current probe with an encoder to overcome the shortcomings of existing pulse eddy current detection technology is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] Therefore, this utility model provides a pulse eddy current probe with an encoder to solve the problem of low work efficiency caused by the complexity of operation in the detection process of the prior art.

[0006] This utility model discloses a pulsed eddy current probe with an encoder, comprising:

[0007] The measuring probe assembly has a pair of limiting components connected to its outer drive.

[0008] A connecting component, one end of which is attached to the side wall of the measuring probe assembly, is clamped between the two limiting components, and a support arm is flipped and connected to the outside of the connecting component;

[0009] A roller is connected to one end of the support arm;

[0010] The brake assembly has one end mounted on the outside of the support arm and the other end inserted into the roller.

[0011] In one possible implementation, the connection component includes:

[0012] The outer casing is installed on the outside of the measuring probe assembly, and the outer casing has first limiting holes on its upper and lower sides;

[0013] A rotating shaft has one end inserted into the housing and connected to a mainspring, the mainspring being installed in the housing, and the other end of the rotating shaft extending out of the housing;

[0014] Encoder signal contacts are mounted on the side of the housing.

[0015] In one possible implementation, the measurement probe assembly includes:

[0016] The probe housing has the limiting component connected to its side wall, and a probe signal contact is provided on the outside of the probe housing, which is located on the side of the limiting component.

[0017] The probe housing includes:

[0018] The connector is installed on the outside of the probe housing;

[0019] The channels are arranged in pairs and are formed in the side plate of the probe housing, and a first limiting plate is installed at the end of the channel.

[0020] In one possible implementation, the limiting component includes:

[0021] A sliding limiting tube has one end slidably connected in the channel and a second limiting plate installed at the end, with the second limiting plate abutting against the side of the first limiting plate;

[0022] The second spring is sleeved on the outside of one end of the sliding limiting tube, and the second spring is connected between the first limiting plate and the other end of the sliding limiting tube.

[0023] In one possible implementation, one end of the support arm is connected to a first connector, which is inserted into the connecting assembly, and the other end of the support arm is connected to a second connecting arm, one end of which is connected to the brake assembly.

[0024] In one possible implementation, a plurality of second limiting holes are provided on the side wall of the roller, and an encoder is provided inside the roller.

[0025] In one possible implementation, the braking assembly includes:

[0026] The first limiting sleeve is installed on the outside of the second connecting arm, and a number of symmetrically arranged first circular holes are opened on the side wall of the first limiting sleeve.

[0027] The limiting tube is connected at one end to the first limiting sleeve, and at the other end of the limiting tube is connected to the outer side of the second limiting sleeve. The second limiting sleeve has several symmetrically arranged second circular holes on its side wall.

[0028] In one possible implementation, the limiting tube includes:

[0029] The tube body has through holes at both ends, and baffles are installed in the through holes.

[0030] The third springs are arranged in pairs and installed on both sides of the baffle. The ends of the two third springs facing away from the baffle are connected to adjustment knobs, and the outer ends of the adjustment knobs are inserted into the first or second round hole.

[0031] This invention uses a pulsed eddy current probe to set up a connecting component. The design of the connecting component to connect the support arm and the roller achieves automatic marking of defect locations by binding the displacement measurement and signal of the coded roller, completely replacing traditional grid drawing or point measurement. The design of the connecting component allows the roller to adapt to curved surfaces, reducing manual adjustment. The braking component achieves fast and stable braking and locking. The spring extension design of the limit component and the bidirectional adjustment of the braking component adapt to different working conditions. Attached Figure Description

[0032] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0033] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0034] Figure 1 A three-dimensional view of the pulse eddy current probe with encoder provided by this utility model;

[0035] Figure 2 A perspective view of the connecting component provided by this utility model;

[0036] Figure 3 A perspective view of the measuring probe assembly provided by this utility model;

[0037] Figure 4 A perspective view of the limiting component provided by this utility model;

[0038] Figure 5 A perspective view of the support arm and roller provided for this utility model;

[0039] Figure 6 A perspective view of the brake assembly provided by this utility model;

[0040] Figure 7 A cross-sectional view of the brake assembly provided by this utility model;

[0041] Figure 8 A cross-sectional view of the limiting tube provided by this utility model;

[0042] In the diagram: 1. Connecting assembly; 11. Housing; 12. Rotating shaft; 13. Spring; 14. Encoder signal contact; 15. First limiting hole; 2. Support arm; 21. First connector; 22. Second connecting arm; 3. Roller; 31. Second limiting hole; 4. Brake assembly; 41. Limiting tube; 411. Tube body; 412. Third spring; 413. Adjusting knob; 415. Through hole; 416. Baffle; 42. First limiting sleeve; 43. Second limiting sleeve; 45. First round hole; 46. Second round hole; 5. Measuring probe assembly; 51. Probe housing; 511. Channel; 512. First limiting plate; 52. Connector; 53. Probe signal contact; 7. Limiting assembly; 71. Sliding limiting tube; 711. Second limiting plate; 72. Second spring. Detailed Implementation

[0043] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] Please refer to Figures 1-8 The present invention discloses a pulse eddy current probe with an encoder, as follows: Figure 1 It includes a connecting component 1, a support arm 2, a roller 3, a brake component 4, a measuring probe component 5, and a limiting component 7. The measuring probe component 5 is connected to a pair of limiting components 7 on its outer side. One end of the connecting component 1 is attached to the side wall of the measuring probe component 5 and clamped between the two limiting components 7. The connecting component 1 is flipped to connect to the support arm 2. One end of the support arm 2 is connected to the roller 3, and the other end is equipped with the brake component 4, which engages with the roller 3.

[0045] In a specific embodiment, such as Figure 2The connecting component 1 includes: a housing 11, a rotating shaft 12, a spring 13, an encoder signal contact 14, and a first limiting hole 15. The housing 11 is installed on the outside of the measuring probe assembly 5. The housing 11 has first limiting holes 15 on its upper and lower sides. The housing 11 has a hollow structure. One end of the rotating shaft 12 is inserted into the housing 11 and connected to the spring 13. The spring 13 is installed in the hollow structure. The other end of the rotating shaft 12 extends out of the housing 11. The encoder signal contact 14 is installed on the side of the housing 11 and connects the measuring probe assembly 5 and the support arm 2 to realize the linkage between the probe and the roller structure. The design of the built-in spring 13 drives the rotating shaft 12, so that the support arm 2 automatically presses down to ensure that the roller 3 is in constant force against the measured curved surface. It is engaged with the limiting component 7 through the first limiting hole 15 to realize the instantaneous switching between the single probe detection mode and the combined detection mode.

[0046] In a specific embodiment, such as Figure 3 The measuring probe assembly 5 includes a probe housing 51 and probe signal contacts 53. The probe housing 51 includes a channel 511 and a first limiting plate 512. A limiting component 7 is connected to the side wall of the probe housing 51. The probe signal contacts 53 are located on the outside of the probe housing 51 and are positioned on the side of the limiting component 7. Pairs of channels 511 are formed in the side plate of the probe housing 51, and the first limiting plate 512 is installed at the end of each channel 511. A connector 52 is installed on the outside of the probe housing 51. In this embodiment, the connector 52 can be magnetically connected to achieve quick assembly and disassembly. The measuring probe assembly 5 receives and processes the ranging signal from the roller 3 collected by the probe signal contacts 53. The limiting component 7 provides a quick docking interface for the connecting component 1 and the measuring probe assembly 5, enabling instantaneous switching between single probe detection and combined detection modes.

[0047] In a specific embodiment, such as Figure 4 The limiting component 7 includes a sliding limiting tube 71, a second limiting plate 711, and a second spring 72. One end of the sliding limiting tube 71 is slidably connected in the channel 511, and the second limiting plate 711 is installed at the end. The second limiting plate 711 abuts against the side of the first limiting plate 512. The second spring 72 is sleeved on the outside of one end of the sliding limiting tube 71 and connects the first limiting plate 512 and the other end of the sliding limiting tube 71. The second limiting plate 711 axially abuts against the first limiting plate 512, constraining the displacement stroke of the sliding limiting tube 71. The pre-compression design of the second spring 72 gives the sliding limiting tube 71 bidirectional elastic extension and contraction characteristics, realizing dual limiting of the measuring probe component 5 and the connecting component 1, so as to ensure the structural stability of the connecting component 1.

[0048] In a specific embodiment, such as Figure 5The support arm 2 includes a first connecting arm 21 and a second connecting arm 22. One end of the support arm 2 is connected to the roller 3, and the other end is equipped with a brake assembly 4, which can be plugged into the roller 3. The first connecting arm 21 is rigidly connected to the rotating shaft 12 and adaptively raises and lowers under the drive of the spring 13 to ensure that the roller 3 is in constant contact with the surface being measured, thus eliminating measurement step loss. The second connecting arm 22 is linked to the brake assembly 4 and the roller 3.

[0049] In a specific embodiment, such as Figure 5 The roller 3 includes a second limiting hole 31 and an encoder. Several second limiting holes 31 are provided on the side wall of the roller 3, and an encoder is installed inside the roller 3. The several second limiting holes 31 on the side wall of the roller achieve zero-displacement rolling locking by interlocking with the brake assembly 4. The encoder integrated inside generates displacement signals in real time. These signals are transmitted to the connecting assembly 1 through the internal wires of the support arm 2, and then transmitted to the measuring probe 51 in a closed loop through the encoder signal contact 14 and the probe signal contact 53.

[0050] In a specific embodiment, such as Figure 6 The brake assembly 4 includes a limiting tube 41, a first limiting sleeve 42, a second limiting sleeve 43, a first circular hole 45, and a second circular hole 46. The first limiting sleeve 42 is installed on the outside of the second connecting arm 22. Several symmetrically arranged first circular holes 45 are opened on the side wall of the first limiting sleeve 42. One end of the limiting tube 41 is drivenly connected to the first limiting sleeve 42, and the other end of the limiting tube 41 is drivenly connected to the outside of the second limiting sleeve 43. Several symmetrically arranged second circular holes 46 are opened on the side wall of the second limiting sleeve 43. The first limiting sleeve 42 is fixed to the outside of the second connecting arm 22, and the several first circular holes 45 on its side wall are sleeved with one end of the limiting tube 41 to form a height-adjustable mechanism. The second limiting sleeve 43 is sleeved on the outside of the other end of the limiting tube 41, and the second circular holes 46 on its side wall constitute a length-adjustable mechanism. Through a bidirectional independent adjustment mechanism, the limiting tube 41 can adapt to the emergency stop locking requirements of different tube diameters.

[0051] In a specific embodiment, such as Figures 7-8The limiting tube 41 includes a tube body 411, a third spring 412, an adjusting knob 413, a through tube 415, and a baffle 416. Through holes 415 are provided at both ends of the tube body 411, and a baffle 416 is installed inside each through hole 415. The third springs 412 are arranged in pairs and installed on both sides of the baffle 416. The adjusting knob 413 is connected to one end of each third spring 412 away from the baffle 416. The outer end of the adjusting knob 413 is inserted into either the first circular hole 45 or the second circular hole 46. The through holes 415 constrain the displacement of the adjusting knob 413 to ensure a rigid connection. The third springs 412 provide bidirectional elastic restoring force, driving the adjusting knob 413 to adaptively engage with the circular holes 45 or 46 to achieve a locking operation. This design enables the brake assembly 4 to stably output braking force to lock the roller 3, and relies on the bidirectional adjustable structure of the first limiting sleeve 42 and the second limiting sleeve 43 to adapt to the spatial posture of the roller 3 in real time.

[0052] In use, the measuring probe assembly 5 and the roller 3 are placed on the surface of the object being measured. At this time, the spring 13 is in a pre-tightened energy storage state. The spring 13 releases energy to drive the support arm 2 to press down, so that the roller 3 is in constant force to conform to the contour of the surface being measured. When the measurement begins, the measuring probe assembly 5 is pushed, and the support arm 2 pulls the roller 3 to move along the curved surface. The frictional force drives the roller 3 to roll. Its built-in encoder generates displacement signals in real time. The displacement data is input to the probe processing unit through the encoder signal contact 14 and is bound in real time with the pulse eddy current detection signal to form a synchronous data stream, which is transmitted to the host system to realize fully automatic correlation positioning of displacement and detection, thereby achieving rapid positioning without affecting the detection effect.

[0053] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A pulsed eddy current probe with an encoder, characterized in that, include: The measuring probe assembly (5) has a pair of limiting components (7) connected to its outer drive. The connecting component (1) has one end attached to the side wall of the measuring probe assembly (5), the connecting component (1) is clamped between the two limiting components (7), and the connecting component (1) has a support arm (2) flipped on the outside; Roller (3) is connected to one end of the support arm (2); The brake assembly (4) is installed at one end on the outside of the support arm (2) and the other end of the brake assembly (4) is inserted into the roller (3).

2. The pulse eddy current probe with encoder as described in claim 1, characterized in that, The connection component (1) includes: The outer casing (11) is installed on the outside of the measuring probe assembly (5), and the upper and lower sides of the outer casing (11) have first limiting holes (15); A rotating shaft (12) is inserted into the housing (11) at one end and connected to a mainspring (13), the mainspring (13) being installed in the housing (11), and the other end of the rotating shaft (12) extending out of the housing (11); Encoder signal contacts (14) are mounted on the side of the housing (11).

3. The pulse eddy current probe with encoder as described in claim 2, characterized in that, The measurement probe assembly (5) includes: The probe housing (51) has the limiting component (7) connected to its side wall. The probe housing (51) has a probe signal contact (53) on its outer side. The probe signal contact (53) is located on the side of the limiting component (7). The probe housing (51) includes: Connector (52) is installed on the outside of the probe housing (51); Channels (511) are arranged in pairs and are opened in the side plate of the probe housing (51). A first limiting plate (512) is installed at the end of the channel (511).

4. The pulse eddy current probe with encoder as described in claim 3, characterized in that, The limiting component (7) includes: A sliding limiting tube (71) is slidably connected at one end in the channel (511) and a second limiting plate (711) is installed at the end. The second limiting plate (711) abuts against the side of the first limiting plate (512). The second spring (72) is sleeved on the outside of one end of the sliding limiting tube (71), and the second spring (72) is connected between the first limiting plate (512) and the other end of the sliding limiting tube (71).

5. The pulse eddy current probe with encoder as described in claim 1, characterized in that, One end of the support arm (2) is connected to a first connector (21), which is inserted into the connecting assembly (1). The other end of the support arm (2) is connected to a second connecting arm (22), and the other end of the second connecting arm (22) is connected to the brake assembly (4).

6. The pulse eddy current probe with encoder as described in claim 5, characterized in that, The roller (3) has several second limiting holes (31) on its side wall, and an encoder is installed inside the roller (3).

7. The pulse eddy current probe with encoder as described in claim 5, characterized in that, The brake assembly (4) includes: The first limiting sleeve (42) is installed on the outside of the second connecting arm (22), and a number of symmetrically arranged first round holes (45) are opened on the side wall of the first limiting sleeve (42); The limiting tube (41) is connected to the first limiting sleeve (42) at one end, and the other end of the limiting tube (41) is connected to the second limiting sleeve (43) at the outside. The second limiting sleeve (43) has several symmetrically arranged second round holes (46) on its side wall.

8. The pulsed eddy current probe with encoder as described in claim 7, characterized in that, The limiting tube (41) includes: The tube body (411) has through holes (415) at both ends, and a baffle (416) is installed in the through holes (415); The third springs (412) are arranged in pairs and installed on both sides of the baffle (416). The ends of the two third springs (412) facing away from the baffle (416) are connected to the adjustment knobs (413). The outer ends of the adjustment knobs (413) are inserted into the first round hole (45) or the second round hole (46).

Images