Acoustic emission sensor mounting device

Abstract

The utility model provides a kind of fixing device of acoustic emission sensor, the structure of the fixing device of acoustic emission sensor is improved, and the installation process of acoustic emission sensor is simplified to improve installation efficiency.The fixing device of acoustic emission sensor includes elastic component and shell part, and the shell part includes shell and guiding portion received and fixed in shell;The guiding portion is insulating material;Guiding portion is used to accommodate magnetic attraction piece, acoustic emission sensor and elastic component;Shell part is further provided with stop portion;Part of magnetic attraction piece is exposed by shell to be magnetically attracted with outside;Elastic component is used to drive the part of acoustic emission sensor to protrude from shell part, and acoustic emission sensor is directly or indirectly abutted with stop portion under the action of elastic component.

Description

Technical Field

[0001] This utility model relates to the field of acoustic emission detection technology, and more specifically, to a fixing device for acoustic emission sensors. Background Technology

[0002] Acoustic emission testing technology is a method that uses acoustic emission sensors to perform dynamic non-destructive testing on different test surfaces. The installation efficiency of the acoustic sensor with different test surfaces is a key factor affecting the efficiency of acoustic emission testing. Utility Model Content

[0003] The purpose of this invention is to provide a fixing device for an acoustic emission sensor. By improving the structure of the fixing device, the installation process of the acoustic emission sensor is simplified and the installation efficiency is improved.

[0004] To achieve the above objectives, this utility model provides a fixing device for an acoustic emission sensor, including an elastic component and a housing. The housing includes an outer shell and a guide portion that accommodates and fixes the outer shell. The guide portion is made of insulating material. The guide portion is used to accommodate a magnetic attractor, an acoustic emission sensor, and the elastic component. The housing also has a stop portion. A portion of the magnetic attractor protrudes from the housing to magnetically attract the outside. The elastic component is used to drive a portion of the acoustic emission sensor to protrude from the housing, and the acoustic emission sensor directly or indirectly abuts against the stop portion under the action of the elastic component.

[0005] By employing the fixing device described in this application, the acoustic emission sensor can be quickly switched between different measured surfaces via a magnetic suction component; by setting an elastic component, a tight press-fit between the acoustic emission sensor and the measured surface can be ensured, thereby simplifying the installation process of the acoustic emission sensor and improving the installation efficiency between the acoustic emission sensor and the measured surface.

[0006] Optionally, the housing includes an outer shell and a guide portion that houses and fixes to the outer shell; the outer shell is made of metal and the guide portion is made of insulating material.

[0007] The metal casing provides support and protection for the overall structure and facilitates the processing and marking of markings; the guide section uses insulating material to isolate electrostatic interference from the acoustic emission sensor.

[0008] Optionally, the guide portion has a first cavity and a second cavity spaced apart from each other. The first cavity is used for the elastic component and the acoustic emission sensor, and the second cavity is used to accommodate the magnetic attractor. The second cavity forms a first opening, through which part of the magnetic attractor is exposed.

[0009] The first cavity independently houses the elastic component and the acoustic emission sensor, forming a physical isolation protective layer. The elastic component can absorb mechanical vibrations, preventing external impacts from being directly transmitted to the sensor, while the preload ensures continuous contact between the sensor and the measured surface.

[0010] The second chamber exposes the magnetic suction component through the first opening, enabling the guide section to magnetically adhere and fix the metal part to the test object. The partially exposed design enhances the closure of the magnetic circuit, achieving an attraction force of over 50N, while also facilitating the adjustment of the magnetic suction component's position or the replacement of magnets of different specifications using tools.

[0011] Optionally, the second cavity is symmetrically arranged with respect to the central axis of the first cavity.

[0012] The symmetrical layout ensures that the magnetic attraction force is evenly distributed along the central axis, preventing the guide from tilting or shifting due to excessive magnetic attraction on one side.

[0013] Optionally, the first cavity is formed with a second port and a third port that are axially opposite each other; a portion of the acoustic emission sensor extends from the second port, and a portion of the housing blocks the third port;

[0014] An elastic component is provided inside the first cavity. One end of the elastic component abuts against the outer shell through the third port, and the other end is used to abut against the acoustic emission sensor.

[0015] This facilitates the installation and adjustment of the spring assembly.

[0016] Optionally, the elastic component includes an insulating guide seat and a spring adapted to the guide seat. This allows for the guidance of the spring's deformation.

[0017] Optionally, the stop includes a portion of the wall that radially penetrates the first cavity and a guide channel that passes through the outer shell in sequence;

[0018] The guide channel extends along the direction of movement of the acoustic emission sensor and is used to accommodate the wiring rod located on the side of the acoustic emission sensor.

[0019] By adapting the connecting rod to the guide channel, the acoustic emission sensor can be stopped at its extreme positions in the direction of movement; in addition, it can also be adapted to prevent rotation in the circumferential position of the acoustic emission sensor.

[0020] Optionally, it also includes mounting holes that penetrate the housing and the second cavity, and the mounting holes are used to be screwed onto the screw. The screwing connection allows the housing, guide, and magnetic element to be fixedly connected, simplifying the structure of the fixing device.

[0021] Optionally, the end face of the guide portion with the first opening and the second opening is the front face; the front face is exposed from the outer shell; the front face has a first region and a second region, the first region forms an axially protruding boss, the second opening is formed on the platform of the boss, and the first opening is formed in the second region. In this way, the acoustic emission sensor is tightly pressed and connected to the surface being measured by the combined action of the magnetic suction component and the elastic component.

[0022] Optionally, the highest point of the magnetic suction component located outside the guide portion is flush with the platform surface. In this way, after the magnetic suction component is attracted to the surface being measured, the edge of the boss abuts against the surface being measured. Under the action of the elastic component, the acoustic emission sensor is pressed against the surface being measured. This achieves close contact between the acoustic emission sensor and the surface being measured, and the abutment between the boss and the surface being measured also provides protection and shielding for the acoustic emission sensor.

[0023] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0025] Figure 1 This is an axonometric view of the fixing device for the acoustic emission sensor in an embodiment of this utility model;

[0026] Figure 2 yes Figure 1 Exploded view;

[0027] Figure 3 yes Figure 1 Cross-sectional view.

[0028] Figure label:

[0029] 1-Shell portion; 11-Outer shell; 110-Open end; 111-Closed end; 112-First slot; 2-Guide portion; 21-First cavity; 21a-Second opening; 21b-Third opening; 22-Second cavity; 22a-First opening; 23-Front end face; 231-Boss; 3-Magnetic suction component; 4-Acoustic emission sensor; 41-Connecting rod; 5-Stop portion; 51-First slot; 52-Second slot; 6-Mounting hole; 7-Screw; 8-Elastic component; 81-Guide seat; 82-Spring. Detailed Implementation

[0030] This invention provides a fixing device for an acoustic emission sensor. By improving the structure of the fixing device, the installation process of the acoustic emission sensor is simplified and the installation efficiency is improved.

[0031] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0033] Please refer to Figures 1 to 3 , Figure 1 This is an axonometric view of the fixing device for the acoustic emission sensor in an embodiment of this utility model; Figure 2 yes Figure 1 Exploded view; Figure 3 yes Figure 1 Cross-sectional view.

[0034] This invention provides a fixing device for an acoustic emission sensor 4. The fixing device includes an elastic component 8 and a housing 1. The housing 1 is used to accommodate a magnetic suction member 3, the acoustic emission sensor 4, and the elastic component 8. The housing 1 is also provided with a stop portion 5. A portion of the magnetic suction member 3 protrudes from the housing 1 to magnetically attract with the outside. The elastic component 8 is used to drive the acoustic emission sensor 4 to a first position. In the first position, the acoustic emission sensor 4 presses against the stop portion 5, and a portion of the acoustic emission sensor 4 protrudes from the housing 1.

[0035] The first position is the extreme position where the acoustic emission sensor 4 protrudes beyond the housing 1. That is, the acoustic emission sensor 4 can move between the first and second positions under the action of the elastic component 8. The first position corresponds to the maximum extension position of the acoustic emission sensor 4, and the second position corresponds to the minimum extension position of the acoustic emission sensor 4. In the minimum extension position, the acoustic emission sensor 4 only needs to be in contact with the surface being measured; it is not necessary for the acoustic emission sensor 4 to extend beyond the outer side of the housing 1.

[0036] That is, when the acoustic emission sensor 4 is not in contact with the surface being measured, the acoustic emission sensor 4 is in the first position. After it comes into contact with the surface being measured, under the action of the magnetic suction member 3, the surface being measured presses against the acoustic emission sensor 4 and compresses the elastic component 8 through the acoustic emission sensor 4. At this time, the acoustic emission sensor 4 is in the second position.

[0037] By employing the fixing device described in this application, the acoustic emission sensor can be quickly switched between different measured surfaces via the magnetic suction component 3. The elastic component 8 ensures a tight contact between the acoustic emission sensor 4 and the measured surface, thereby simplifying the installation process of the acoustic emission sensor 4 and improving the installation efficiency between the acoustic emission sensor 4 and the measured surface.

[0038] In such Figure 1 In the example shown, the fixing device is used to support and accommodate the acoustic emission sensor 4 to form a complete test module, thereby enabling quick connection to different test surfaces.

[0039] In a specific example, the fixing device includes a housing 1 for fixing the acoustic emission sensor 4, the elastic component 8, and the magnetic suction element 3. The housing 1 includes an outer shell 11 and a guide portion 2 that accommodates and fixes to the outer shell 11. Along the axial direction of the acoustic emission sensor 4, one end of the outer shell 11 is an open end 110, and the other end is a closed end 111. The guide portion 2 is inserted into the outer shell 11 through the open end 110 and is connected to the outer shell 11 by compression. Alternatively, the fixing connection can also be formed by riveting, snap-fitting, or screwing (described later).

[0040] In this embodiment, the outer casing 11 is made of metal, and the guide portion 2 is made of insulating material. The metal outer casing 11 provides support and protection for the overall structure and facilitates the processing of markings. The insulating material used in the guide portion 2 isolates the acoustic emission sensor 4 from electrostatic interference.

[0041] In the example shown, the guide portion 2 has a front end face 23, which is exposed through the opening end 110 of the housing 11. The guide portion 2 has a first cavity 21 and a second cavity 22 spaced apart from each other, both extending axially. The first cavity 21 is used to accommodate the elastic component 8 and the acoustic emission sensor 4, and the second cavity 22 is used to accommodate the magnetic attractant 3. The second cavity 22 forms a first opening 22a, through which a portion of the magnetic attractant 3 is exposed.

[0042] The first cavity 21 and the second cavity 22 can be formed on the guide portion 2 by injection molding or other methods. Both the first cavity 21 and the second cavity 22 have an opening that penetrates the front end face 23 of the guide portion 2. The opening communicating with the first cavity 21 is defined as the second opening 21a, and the opening communicating with the second cavity 22 is defined as the first opening 22a. Part of the magnetic attractor 3 is located in the second cavity 22 and is fixedly connected to the guide portion 2, while part of it is exposed through the first opening 22a.

[0043] In the example shown in the figure, the end wall of the magnetic member 3 extends beyond the front end face 23. Of course, it can also be flush with the front end face 23. Those skilled in the art can choose for themselves.

[0044] The first cavity 21 independently houses the elastic component 8 and the acoustic emission sensor 4, forming a physical isolation protective layer. The elastic component 8 can absorb mechanical vibrations, preventing external impacts from being directly transmitted to the sensor, while ensuring continuous contact between the sensor and the measured surface through pre-tightening force.

[0045] The second cavity 22 exposes the magnetic suction element 3 through the first opening 22a, enabling the guide part 2 to be magnetically attracted and fixed to the metal test piece. The partially exposed design enhances the closure of the magnetic circuit, and the attraction force can reach more than 50N. At the same time, it is convenient to adjust the position of the magnetic suction element 3 or replace it with a magnet of different specifications using tools.

[0046] In a more specific example, the front end face 23 has a first region and a second region. The second region is arranged around the first region, or the second region is arranged on both sides of the first region along the radial direction of the acoustic emission sensor 4.

[0047] A first region forms an axially convex boss 231, and a second opening 21a is formed on the platform of the boss 231 to form an annular edge of the boss 231. A first opening 22a is formed in the second region. In this way, the acoustic emission sensor 4 is tightly pressed and connected to the surface being measured by the combined action of the magnetic suction member 3 and the elastic component 8.

[0048] In the example shown, the highest position of the magnetic chuck 3, located outside the guide portion 2, is flush with the platform surface. The top surface of the magnetic chuck 3 and the platform surface of the boss 231 are on the same surface, that is, the magnetic chuck 3 and the end face of the first region are on the same surface.

[0049] In this way, after the magnetic suction component 3 is attracted to the surface to be measured, the edge of the boss 231 abuts against the surface to be measured. Under the action of the elastic component 8, the acoustic emission sensor 4 is pressed against the surface to be measured. On the one hand, this can achieve close contact between the acoustic emission sensor 4 and the surface to be measured. On the other hand, the abutment between the boss 231 and the surface to be measured can protect and shield the acoustic emission sensor 4.

[0050] To achieve a fixed connection between the magnetic component 3, the housing 11, and the guide portion 2, the fixing device also includes a mounting hole 6. The mounting hole 6 penetrates the housing 11 and the second cavity 22, and is used to be screwed onto the screw rod 7. This screwing connection allows the housing 11, the guide portion 2, and the magnetic component to be fixedly connected, simplifying the structure of the fixing device.

[0051] In other embodiments, the first cavity 21 has a third opening 21b axially opposite to the second opening 21a, meaning the first cavity 21 extends axially and penetrates the guide portion 2. This differs from the structure of the second cavity 22, which, in the example shown, does not penetrate the guide portion 2. A portion of the acoustic emission sensor 4 protrudes from the second opening 21a, and a portion of the housing 11 blocks the third opening 21b. Thus, the housing 11 and the first cavity 21 together form a receiving space for accommodating the acoustic emission sensor 4 and the elastic component 8.

[0052] An elastic component 8 is disposed within the first cavity 21, and the elastic component 8 is located between the end of the acoustic emission sensor 4 near the third port 21b and the third port 21b. One end of the elastic component 8 abuts against the outer casing 11 via the third port 21b, and the other end abuts against the acoustic emission sensor 4. This facilitates the installation and adjustment of the spring 82 assembly.

[0053] In the above embodiments, the number of second cavities 22 is N, where N is an integer greater than or equal to 2. The second cavities 22 are symmetrically arranged with respect to the central axis of the first cavity 21.

[0054] The symmetrical layout ensures that the attraction force generated by the magnetic attractant 3 is evenly distributed along the central axis, preventing the guide part 2 from tilting or shifting due to excessive magnetic attraction on one side.

[0055] In a more specific example, the elastic component 8 includes a guide seat 81 and a spring 82 adapted to the guide seat 81. This allows for the guidance of the deformation of the spring 82.

[0056] As shown in the figure, the guide seat 81 has a hollow interior. For example, the interior of the guide seat 81 is machined with a circular groove to accommodate the recess of the spring 82. Part of the spring 82 is located inside the guide seat 81 and presses against the guide seat 81. Part of the spring 82 extends out of the guide seat 81 and presses against the acoustic emission sensor 4. The bottom end of the guide seat 81 axially passes through the third opening 21b and presses against a portion of the outer casing 11.

[0057] The guide seat 81 is made of insulating material, and the spring 82 is made of metal. With this guide seat 81, electrostatic interference can be isolated.

[0058] To stop the acoustic emitter in the direction of elastic deformation of the elastic component 8, a first slot 51 is formed on the side of the housing 11. The first slot 51 extends axially through a portion of the opening end 110 of the housing 11 and extends radially through the wall of the housing 11. The first slot 51 serves to form the stop portion 5. To fit the first slot 51, the guide portion 2 also has a second slot 52, which extends radially through the first cavity 21.

[0059] After the guide portion 2 is inserted into the housing 11, the first slot 51 and the second slot 52 overlap radially with and are connected radially to each other with the acoustic emission sensor 4. Axially, the first bottom wall of the first slot 51 and the second bottom wall of the second slot 52 are spaced apart, forming two extreme positions of the acoustic emission sensor 4. Furthermore, the two radially opposite sidewalls of the first slot 51 or the two radially opposite sidewalls of the second slot 52 can form a circumferential stop with the acoustic emission sensor 4 to prevent rotation of the acoustic emission sensor 4 within the first cavity 21.

[0060] In this embodiment, the stop portion 5 includes a guide channel that radially penetrates a portion of the wall of the first cavity 21 and the outer casing 11. The first slot 51 and the second slot 52 together constitute the guide channel. The guide channel extends along the moving direction of the acoustic emission sensor 4 and is used to accommodate the connecting rod 41 disposed on the side of the acoustic emission sensor 4. In the example shown, the connecting rod is disposed on the side of the acoustic emission sensor 4 and extends radially thereafter.

[0061] By adapting the connecting rod 41 to the guide channel, the acoustic emission sensor 4 can be stopped at its extreme positions in the direction of movement. Furthermore, it can also be adapted to prevent rotation at the circumferential position of the acoustic emission sensor 4.

[0062] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A mounting device for an acoustic emission sensor, characterized in that, It includes an elastic component (8) and a shell (1), the shell (1) including an outer shell (11) and a guide portion (2) that is received and fixed to the outer shell (11); the guide portion (2) is made of insulating material; The guide portion (2) is used to accommodate the magnetic attractor (3), the acoustic emission sensor (4), and the elastic component (8); the shell portion (1) is also provided with a stop portion (5); a portion of the magnetic attractor (3) is exposed from the shell portion (1) to magnetically attract with the outside; The elastic component (8) is used to drive a portion of the acoustic emission sensor (4) to protrude from the housing (1), and the acoustic emission sensor (4) directly or indirectly abuts against the stop portion (5) under the action of the elastic component (8).

2. The fixing device for the acoustic emission sensor according to claim 1, characterized in that, The outer shell (11) is made of metal.

3. The fixing device for the acoustic emission sensor according to claim 2, characterized in that, The guide portion (2) is provided with a first cavity (21) and a second cavity (22) spaced apart from each other. The first cavity (21) is used to accommodate the elastic component (8) and the acoustic emission sensor (4). The second cavity (22) is used to accommodate the magnetic attractant (3). The second cavity (22) forms a first opening (22a). A portion of the magnetic attractant (3) is exposed through the first opening (22a).

4. The fixing device for the acoustic emission sensor according to claim 3, characterized in that, The second cavity (22) is symmetrically arranged with respect to the central axis of the first cavity (21).

5. The fixing device for the acoustic emission sensor according to claim 3, characterized in that, The stop (5) includes a portion of the wall that passes through the first cavity (21) and the outer shell (11) in a radial direction; The guide channel extends along the moving direction of the acoustic emission sensor (4) and is used to accommodate the wiring rod (41) disposed on the side of the acoustic emission sensor (4).

6. The fixing device for the acoustic emission sensor according to claim 3, characterized in that, It also includes a mounting hole (6) that penetrates the housing (11) and the second cavity (22) for screwing into the screw (7).

7. The fixing device for the acoustic emission sensor according to claim 3, characterized in that, The first cavity (21) is formed with a second opening (21a) and a third opening (21b) that are axially opposite each other; a portion of the acoustic emission sensor (4) extends out from the second opening (21a), and a portion of the outer shell (11) blocks the third opening (21b); An elastic component (8) is provided in the first cavity (21). One end of the elastic component (8) abuts against the outer shell (11) through the third port (21b), and the other end is used to abut against the acoustic emission sensor (4).

8. The fixing device for the acoustic emission sensor according to claim 7, characterized in that, The end face of the guide portion (2) having the first opening (22a) and the second opening (21a) is the front end face (23); the front end face (23) is exposed by the outer shell (11); The front end face (23) has a first region and a second region. The first region forms an axially convex boss (231), the second opening (21a) is formed on the platform of the boss (231), and the first opening (22a) is formed in the second region.

9. The fixing device for the acoustic emission sensor according to claim 8, characterized in that, The highest position of the magnetic suction member (3) located outside the guide portion (2) is flush with the table surface.

10. The fixing device for the acoustic emission sensor according to any one of claims 3-9, characterized in that, The elastic component (8) includes an insulating guide seat (81) and a spring (82) adapted to the guide seat (81).

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