Acoustic emission sensor fixing device

Abstract

The utility model provides an acoustic emission sensor fixing device, and belongs to the technical field of sensors. Comprising an adjustable clamp and a fixed frame, the adjustable clamp comprises a mounting seat and two clamping blocks, one side of the mounting seat is provided with a mounting surface, two ends of the mounting surface are convexly provided with stop blocks, the two clamping blocks are arranged between the two stop blocks and are respectively connected with the two stop blocks through elastic pieces, and opposite sides of the two clamping blocks are provided with arc-shaped clamping surfaces. The fixing frame comprises a supporting seat and a fixing bolt, a mounting groove is formed in the bottom of the supporting seat, sliding grooves are formed in the two opposite side walls of the mounting groove in the grooving direction, the mounting seat is slidably connected with the two sliding grooves, and the fixing bolt penetrates through the top of the supporting seat and is connected with the mounting seat. The technical problems of low detection efficiency and accuracy caused by the defects of a fixed arrangement means between an existing acoustic emission sensor and a detection sample in the prior art can be solved.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, and in particular to a mounting device for an acoustic emission sensor. Background Technology

[0002] In modern industry, acoustic emission technology, as a non-destructive testing method, is widely used in structural health monitoring, material performance evaluation, and fault diagnosis. Acoustic emission sensors can effectively capture sound wave signals generated by internal defects in materials, thereby enabling early warning of potential problems.

[0003] The performance of acoustic emission sensors is often affected by the stability of their connection with the test sample. Insecure fixing or inaccurate positioning can lead to signal distortion, reducing detection accuracy and reliability. In related technologies, acoustic emission sensors are typically installed using dedicated clamps or directly connected to the test sample via adhesive.

[0004] While connection methods employed in related technologies can meet basic requirements in certain situations, in practical applications, these traditional methods suffer from problems such as complex installation, poor stability, and difficulty in adjustment, limiting the application scope and effectiveness of acoustic emission technology. Furthermore, because there are many types of non-destructive testing targets, acoustic emission probes come in various sizes. Conventional fixtures cannot guarantee good coupling between the sensor and the measurement surface while ensuring compatibility across multiple sizes. During testing, operators need to repeatedly change the fixing fixtures or check the bonding position and tightness of the acoustic emission sensor, resulting in low testing efficiency and accuracy. Utility Model Content

[0005] This utility model provides an acoustic emission sensor fixing device, which can solve the technical problem of low detection efficiency and accuracy caused by the defects of existing methods for fixing acoustic emission sensors and test samples in related technologies. The technical solution is as follows:

[0006] This utility model provides an acoustic emission sensor fixing device, including an adjustable clamp and a fixing frame.

[0007] The adjustable clamp includes a mounting base and two clamping blocks. The mounting base has a mounting surface on one side and two stops protruding from both ends of the mounting surface. The two clamping blocks are disposed between the two stops and are respectively connected to the two stops through elastic elements. The two clamping blocks have arc-shaped clamping surfaces on opposite sides.

[0008] The fixed frame includes a support base and fixing bolts. The bottom of the support base is provided with a mounting groove. Sliding grooves are provided on the opposite side walls of the mounting groove along the groove direction. The two ends of the mounting base are slidably connected to the two sliding grooves respectively. The mounting surface is arranged facing the opening of the mounting groove. The fixing bolts pass through the top of the support base and are connected to the mounting base.

[0009] Optionally, the elastic element is a spring, and multiple elastic elements are provided between the clamping block and the corresponding stop block, with the multiple elastic elements evenly spaced apart.

[0010] Optionally, the clamping block and the stop block are detachably connected, and there are multiple types of clamping blocks, each with a different arc curvature of its arc-shaped clamping surface.

[0011] Optionally, the acoustic emission sensor fixing device further includes a connecting nut, the bottom of the mounting groove is provided with a nut mounting groove, the bottom of the nut mounting groove is provided with a through hole communicating with the top of the support base, the connecting nut is installed in the nut mounting groove, and the fixing bolt is fitted through the through hole and the connecting nut.

[0012] Optionally, the support base includes a connecting plate and support feet disposed at both ends of the connecting plate. The two support feet and the plate surface of the connecting plate define the mounting groove. The sliding groove is disposed on the side of the two support feet that are close to each other and is arranged along the extension direction of the support feet.

[0013] Optionally, a limit block is provided at the end of the slide away from the connecting plate.

[0014] Optionally, a first sample contact surface and a second sample contact surface are provided on the end face of the support foot away from the connecting plate. The first sample contact surface is parallel to the plate surface of the connecting plate and is provided on the side of the two end faces of the support foot that are far apart from each other. The second sample contact surface is an arc surface that is concave towards the connecting plate and is provided on the side of the two end faces of the support foot that are close to each other.

[0015] Optionally, both the first sample contact surface and the second sample contact surface are provided with raised and recessed textures.

[0016] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following:

[0017] The acoustic emission sensor fixing device provided in this embodiment utilizes adjustable clamping blocks and a mounting base to form an adjustable fixture. The arc-shaped clamping surfaces of the two clamping blocks adaptively clamp and fix different types of acoustic emission sensors, and are integrated with a fixing frame. After the fixing frame is glued to the surface of the sample to be tested, the relative position of the mounting base and the acoustic emission sensor within the fixing frame is adjusted by tightening the fixing bolts. Guided by the internal sliding groove, the mounting groove at the bottom opening of the fixing frame fully contacts the sample to perform acoustic wave detection. It has strong adaptability, eliminating the need for frequent replacement of special fixtures based on changes in acoustic emission sensor specifications. It also provides accurate positioning support for the acoustic emission sensor on the sample, effectively solving the technical problems of low detection efficiency and accuracy caused by the defects of existing methods for fixing acoustic emission sensors to test samples. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the acoustic emission sensor fixing device provided in this embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the adjustable clamp provided in this embodiment of the utility model;

[0021] Figure 3 This is a structural schematic diagram of one side of the fixed frame provided in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the other side of the fixed frame provided in this embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the acoustic emission sensor fixing device provided in this embodiment of the present invention, which is set on the sample to be tested with a curved surface;

[0024] Figure 6 This is a schematic diagram of the structure of the acoustic emission sensor fixing device provided in this embodiment of the present invention, which is set on a sample to be tested with a flat surface.

[0025] In the figure: 1-Adjustable clamp; 2-Fixed frame; 11-Mounting base; 11a-Mounting surface; 12-Clamping block; 21-Support base; 21a-Mounting groove; 21b-Slide groove; 21c-Nut mounting groove; 21d-Through hole; 22-Fixing bolt; 23-Connecting nut; 111-Stop block; 112-Elastic element; 121-Arc-shaped clamping surface; 211-Connecting plate; 212-Supporting foot; 213-Limiting block; 2121-First sample contact surface; 2122-Second sample contact surface; 2123-Rough texture; m-Sample to be tested; n-Acoustic emission sensor. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure of the acoustic emission sensor fixing device provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the adjustable clamp provided in this embodiment of the utility model; Figure 3 This is a structural schematic diagram of one side of the fixed frame provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the other side of the fixed frame provided in this embodiment of the utility model; Figure 5 This is a schematic diagram of the structure of the acoustic emission sensor fixing device provided in this embodiment of the present invention, which is set on the sample to be tested with a curved surface; Figure 6 This is a schematic diagram of the acoustic emission sensor fixing device provided in this embodiment of the invention, mounted on a sample to be tested with a flat surface. Figures 1 to 6 As shown, this embodiment of the present invention provides an acoustic emission sensor fixing device, including an adjustable clamp 1 and a fixing frame 2.

[0028] The adjustable clamp 1 includes a mounting base 11 and two clamping blocks 12. The mounting base 11 has a mounting surface 11a on one side, and two stops 111 protrude from both ends of the mounting surface 11a. The two clamping blocks 12 are disposed between the two stops 111 and are respectively connected to the two stops 111 through elastic members 112. The opposite side of the two clamping blocks 12 is provided with an arc-shaped clamping surface 121.

[0029] The fixed frame 2 includes a support base 21 and fixing bolts 22. The bottom of the support base 21 has a mounting groove 21a, and the opposite side walls of the mounting groove 21a have sliding grooves 21b along the groove direction. Both ends of the mounting base 11 are slidably connected to the two sliding grooves 21b respectively. The mounting surface 11a faces the opening of the mounting groove 21a, and the fixing bolts 22 pass through the top of the support base 21 and are connected to the mounting base 11.

[0030] In this embodiment of the invention, when defect detection of the sample m to be tested is required, a corresponding acoustic emission sensor n is first selected according to the testing requirements. The acoustic emission sensor n is usually a cylindrical structure with a data cable connector protruding from its side wall. The data cable connector is used to connect to the host computer for signal feedback and data collection. During assembly, the acoustic emission sensor n is installed into the mounting slot 21a, and one end of its axis is placed between the two clamping blocks 12 and abuts against the mounting surface 11a. Under the elastic force of the elastic element 112, the two clamping blocks 12 abut against the side wall of the acoustic emission sensor n from both sides through the arc-shaped clamping surface 121, thereby clamping and fixing the acoustic emission sensor n. Next, the bottom of the support base 21, which has a mounting groove 21a, is placed on the surface of the sample m to be tested and fixed with glue to achieve the overall connection of the fixing device. Then, the fixing bolt 22 is tightened from one side of the top of the support base 21 to drive the mounting base 11 to move relative to the support base 21 along the direction of the slide groove 21b until the other end of the acoustic emission sensor n on the axis contacts the surface of the sample m to be tested, thus completing the fixed setting between the acoustic emission sensor n and the sample m. Then, the acoustic emission sensor n can emit sound waves to the sample m to be tested, and the vibration of the surface of the sample m caused by the acoustic emission waves is converted into an electrical signal for acquisition and feedback, thus completing the detection.

[0031] The acoustic emission sensor fixing device provided in this embodiment utilizes adjustable clamping blocks 12 and mounting base 11 to form an adjustable clamp 1. The arc-shaped clamping surfaces 121 of the two clamping blocks 12 adaptively clamp and fix different models of acoustic emission sensors n, and are integrated with the fixing frame 2. After the fixing frame 2 is glued to the surface of the sample m to be tested, the relative position of the mounting base 11 and the acoustic emission sensor n within the fixing frame 2 is adjusted by tightening the fixing bolts 22. Guided by the internal sliding groove 21b, the mounting groove 21a at the bottom opening of the fixing frame 2 fully contacts the sample m to perform acoustic wave detection. It has strong adaptability, eliminating the need for frequent replacement of special clamps based on changes in the specifications of the acoustic emission sensor n. Simultaneously, it provides accurate positioning support for the acoustic emission sensor n on the sample m to be tested, effectively solving the technical problems of low detection efficiency and accuracy caused by the defects of existing methods for fixing acoustic emission sensors and test samples in related technologies.

[0032] Optionally, the elastic element 112 is a spring, and multiple elastic elements 112 are provided between the clamping block 12 and the corresponding stop block 111, with the multiple elastic elements 112 evenly spaced apart. Exemplarily, in this embodiment of the invention, by evenly spaced multiple springs as elastic elements 112 connecting and supporting the stop block 111 and the clamping block 12, multi-point uniform support is achieved for the clamping block 12 during extension and retraction, ensuring that the clamping block 12 maintains its posture balance during spacing adjustment, avoiding tilting to one side due to improper assembly, and improving the clamping stability of the acoustic emission sensor n.

[0033] Optionally, the clamping block 12 and the stop block 111 are detachably connected. Various types of clamping blocks 12 are provided, each with a different arc-shaped clamping surface 121 curvature. For example, in this embodiment of the invention, a detachable connection is adopted. Users can select a clamping block 12 with a corresponding arc-shaped clamping surface 121 to combine with the mounting base 11 according to the outer surface curvature of different specifications of acoustic emission sensors n, thereby achieving matching clamping. This further improves adaptability. Furthermore, when the fixing device is not in use, the clamping block 12 can be disassembled separately for maintenance and storage, improving the overall service life.

[0034] Optionally, the acoustic emission sensor fixing device further includes a connecting nut 23. The bottom of the mounting groove 21a is provided with a nut mounting groove 21c, and the bottom of the nut mounting groove 21c is provided with a through hole 21d communicating with the top of the support base 21. The connecting nut 23 is installed in the nut mounting groove 21c, and the fixing bolt 22 is fitted through the through hole 21d and the connecting nut 23. Exemplarily, in this embodiment of the invention, to address the insertion of the fixing bolt 22 and its adjustment during use, the matching connecting nut 23 is fixedly installed by providing a nut mounting groove 21c on the support base 21. The connecting nut 23 is threadedly connected to the support base 21 from within, reducing the need for an overall opening in the support base 21. The diameter of the corresponding through hole 21d can be set larger than that of the fixing bolt 22, serving only to allow the fixing bolt 22 to pass through. During adjustment, the fixing bolt 22 only has a threaded engagement with the connecting nut 23, avoiding the problem of wear after prolonged use due to directly opening a threaded hole in the support base 21 to engage with the fixing bolt 22. After prolonged use, simply replace the connecting nut 23 to continue using it, further extending its overall service life.

[0035] Optionally, the support base 21 includes a connecting plate 211 and support feet 212 disposed at both ends of the connecting plate 211. The two support feet 212 and the plate surface of the connecting plate 211 define a mounting groove 21a. A sliding groove 21b is disposed on the side where the two support feet 212 are close to each other and is arranged along the extension direction of the support feet 212. Exemplarily, in this embodiment of the present invention, the support base 21 is generally in the form of a "C" shaped structure composed of the connecting plate 211 and the support feet 212 vertically connected to both ends of the connecting plate 211. During testing, the end faces of the two support feet 212 are bonded to the surface of the sample m to be tested. The entire recessed area of ​​the "C" shaped structure forms a through groove structure with both sides communicating with the outside. The mounting groove 21a in the form of a through groove can reduce the interference of the inner wall of the closed groove structure on the acoustic emission sensor n, reduce the requirement for the groove volume, facilitate the insertion and clamping of the acoustic emission sensor n, and further reduce the overall volume of the fixing frame 2, facilitate glue fixation, and improve connection stability.

[0036] Optionally, a limiting block 213 protrudes from one end of the slide groove 21b away from the connecting plate 211. Exemplarily, in this embodiment of the present invention, by providing the limiting block 213, when the mounting base 11 is adjusted in position along the slide groove 21b by turning the fixing bolt 22, the limiting block 213 can abut against the mounting base 11 to limit the maximum stroke of the limiting block 213.

[0037] Optionally, a first sample contact surface 2121 and a second sample contact surface 2122 are provided on the end face of the support leg 212 away from the connecting plate 211. The first sample contact surface 2121 is parallel to the plate surface of the connecting plate 211 and is located on the side of the two support legs 212 that are far apart from each other. The second sample contact surface 2122 is an arc surface that is concave towards the connecting plate 211 and is located on the side of the two support legs 212 that are close to each other. Exemplarily, in this embodiment of the present invention, a second sample contact surface 2122 of the same arc is provided on the side of the two support legs 212 that are close to each other. When testing a sample m with an arc surface, refer to... Figure 5 It can be fully contacted with its surface through two second sample contact surfaces 2122 and bonded with adhesive; while when testing a test sample m with a flat surface, refer to Figure 6 The first sample contact surface 2121, located on the opposite side of the end face, can fully contact the surface and be bonded with adhesive. The simultaneous provision of two irregularly shaped contact surface forms further improves the adaptability of the fixing device.

[0038] For example, the acoustic emission sensor mounting device is simple and quick to manufacture and can be rapidly produced by 3D printing. It has good installation effect and can be used for mounting sensors on cylindrical surfaces. At the same time, the adjustable clamp greatly increases the applicability of the device.

[0039] Optionally, both the first sample contact surface 2121 and the second sample contact surface 2122 are provided with raised and recessed textures 2123. Exemplarily, in this embodiment of the invention, the raised and recessed textures 2123 on the first sample contact surface 2121 and the second sample contact surface 2122 facilitate the application of a sufficient amount of adhesive to fill them, thereby improving the adhesion and firmness with the surface of the sample m to be tested, and further enhancing assembly stability.

[0040] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for fixing an acoustic emission sensor, characterized in that, The utility model relates to a sound emission sensor fixing device, including: Adjustable clamp (1) and fixed frame (2), The adjustable clamp (1) includes mounting seat (11) and two clamping blocks (12), one side of mounting seat (11) is provided with mounting face (11a), both ends of mounting face (11a) are provided with stopper (111) in protruding, two clamping blocks (12) are arranged between two stoppers (111) and are connected with two stoppers (111) through elastic element (112) respectively, opposite side of two clamping blocks (12) is provided with arc clamping face (121), The fixed frame (2) includes support seat (21) and fixed bolt (22), bottom of support seat (21) is provided with installation groove (21a), opposite two side walls of installation groove (21a) are provided with sliding slot (21b) along the direction of being slotted, both ends of mounting seat (11) are connected with two sliding slots (21b) in sliding respectively, mounting face (11a) is provided towards the opening of installation groove (21a), fixed bolt (22) is passed in the top of support seat (21) and is connected with mounting seat (11).

2. The acoustic emission sensor fixture of claim 1, wherein, The elastic element (112) is a spring, a plurality of elastic elements (112) are arranged between the clamping block (12) and the corresponding stopper (111), and the plurality of elastic elements (112) are uniformly spaced.

3. The acoustic emission sensor fixture of claim 1, wherein, The clamping block (12) and the stopper (111) are detachably connected, the clamping block (12) is provided with multiple, and the arc of the arc clamping face (121) of each clamping block (12) is different.

4. The acoustic emission sensor fixture of claim 1, wherein, The sound emission sensor fixing device further includes a connecting nut (23), the bottom of the installation groove (21a) is provided with a nut installation groove (21c), the bottom of the nut installation groove (21c) is provided with a through hole (21d) in communication with the top of the support seat (21), the connecting nut (23) is installed in the nut installation groove (21c), and the fixed bolt (22) is fitted to pass through the through hole (21d) and the connecting nut (23).

5. The acoustic emission sensor fixture of any one of claims 1 to 4, wherein, The support seat (21) includes a connecting plate (211) and support legs (212) provided at both ends of the connecting plate (211), two support legs (212) and the plate surface of the connecting plate (211) define the installation groove (21a), the sliding slots (21b) are provided on the side of the two support legs (212) close to each other and arranged along the extension direction of the support leg (212).

6. The acoustic emission sensor fixture of claim 5, wherein, The end of the sliding slot (21b) away from the connecting plate (211) is provided with a limiting block (213) in protrusion.

7. The acoustic emission sensor fixture of claim 5, wherein, The support leg (212) is provided with a first sample contact surface (2121) and a second sample contact surface (2122) on the distal end surface of the connecting plate (211), the first sample contact surface (2121) is parallel to the plate surface of the connecting plate (211) and is arranged on the side of the distal end surface of the two support legs (212) away from each other, and the second sample contact surface (2122) is a circular arc surface recessed towards the connecting plate (211) and is arranged on the side of the distal end surface of the two support legs (212) close to each other.

8. The acoustic emission sensor fixture of claim 7, wherein, The first sample contact surface (2121) and the second sample contact surface (2122) are both arranged with concave-convex lines (2123).

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