Detection device

Abstract

The utility model belongs to the technical field of non-destructive testing of aviation composite material parts, and discloses a detection device which comprises a probe, a water bag structure and a supporting assembly, the water bag structure comprises a shell and a flexible film, the shell is provided with a containing cavity, an operation opening and a liquid inlet, the operation opening and the liquid inlet are communicated with the containing cavity, and the liquid inlet and the operation opening are located on the two sides of the shell. The flexible film is connected to the shell and can seal the operation opening, the probe is connected to the shell, and the detection end of the probe is located in the containing cavity and faces the operation opening; the supporting assembly comprises two supporting pieces capable of swinging relative to the shell, the two supporting pieces can swing towards the two opposite sides of the shell, supporting parts are arranged at the ends, away from the shell, of the supporting pieces, and when the detection device is in the detection state, the flexible film and the two supporting parts abut against the outer surface of the U-shaped structural part. According to the utility model, when the U-shaped structural member is detected, the stability of the probe and the accuracy of defect detection are high.

Description

Technical Field

[0001] This utility model relates to the field of non-destructive testing technology for aerospace composite material parts, and in particular to a testing device. Background Technology

[0002] In the aerospace field, composite materials are widely used in the manufacture of various structural components due to their lightweight, high strength, and fatigue resistance, among which U-shaped structural components are one. However, during the production and molding process of U-shaped structural components, defects such as delamination, inclusions, and porosity are easily generated due to the influence of material properties, process conditions, and operational factors. These defects seriously affect the mechanical properties and reliability of the structural components, thereby threatening the safe operation of aircraft.

[0003] To address the aforementioned issues, ultrasonic phased array testing technology is currently the primary method for defect detection in U-shaped structural components. Existing testing devices include a water bladder and a probe. By placing the water bladder on the surface of the composite material U-shaped structural component and using it as a coupling medium, the ultrasonic phased array beam emitted by the probe can be successfully transmitted into the interior of the structural component.

[0004] However, when inspecting U-shaped structural components, the probe is difficult to keep stable during the inspection process due to the diverse curvature changes. The instability of the inspection direction will cause deviations in the received ultrasonic signals, affecting the accurate judgment of defects. Utility Model Content

[0005] The purpose of this invention is to provide a detection device to improve the stability of the probe during detection and the accuracy of defect detection.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The inspection device, used for defect detection of U-shaped structural components, includes:

[0008] probe;

[0009] A water bladder structure includes a shell and a flexible membrane. The shell has a accommodating cavity and a working port and a liquid inlet communicating with the accommodating cavity. The flexible membrane is connected to the shell and can cover the working port. A probe is connected to the shell, and the detection end of the probe is located in the accommodating cavity and is positioned towards the working port.

[0010] The support assembly includes two swingable support members relative to the housing. The two support members are swingable toward opposite sides of the housing. A support portion is provided at the end of the support member away from the housing. When the detection device is in the detection state, the flexible film and the two support portions are attached to the outer surface of the U-shaped structure.

[0011] As preferred, the support assembly is provided with two, the two support assemblies are arranged on opposite sides of the shell along a first direction, and the support assembly comprises two support members arranged at intervals along a second direction, which is perpendicular to the first direction.

[0012] As preferred, the support member comprises a support arm and a pulley, the support arm is rotatable relative to the shell, the pulley is rotatable connected to one end of the support arm away from the shell as the support part, and the outer sides of the two pulleys of the support assembly are provided with the elastic track.

[0013] As preferred, the support arm comprises two limiting parts, and the pulley is located between the two limiting parts and rotatable connected to the two limiting parts.

[0014] As preferred, the support assembly further comprises a storage pulley, the storage pulley is rotatable relative to the shell, and the outer sides of the two pulleys and the storage pulley of the support assembly are provided with the elastic track.

[0015] As preferred, the support assembly further comprises an adapter, the adapter is connected to the shell, and the support member is rotatable connected to the adapter.

[0016] As preferred, the adapter comprises two detachably connected adapter plates, one of the adapter plates is connected to the shell, and the support member is clamped between the two adapter plates and rotatable connected to the two adapter plates.

[0017] As preferred, the detection device further comprises an encoding assembly, the encoding assembly comprises an encoder and an encoder pulley, the encoder is installed on the shell, the encoder pulley is connected to the rotating shaft of the encoder, and when the detection device is in a detection state, the encoder pulley abuts against the outer surface of the U-shaped structure.

[0018] As preferred, the water bag structure further comprises a sealing sleeve pad provided with a sleeve hole, the sealing sleeve pad is detachably connected to the shell, the sleeve hole is communicated with the operation port, and the flexible film is connected to the sealing sleeve pad and capable of covering the sleeve hole.

[0019] As preferred, the detection device further comprises a bearing member, the bearing member is sleeved on the outer periphery of the probe and detachably connected to the shell.

[0020] The utility model discloses the beneficial effects of:

[0021] The utility model provides a kind of detection device, when U-shaped structural member is detected, two supporting pieces can change support angle and position by swinging, to adapt the curvature variation of U-shaped structural member, make support portion always adhere to the outer surface of U-shaped structural member, provide stable support for entire detection device, prevent probe from irregular shape U-shaped structural member and occur shaking or deviation, to improve the accuracy of defect detection.And, when detecting, inject coupling liquid into the accommodating cavity by inlet, so that flexible film can be tightly adhered to the outer surface of U-shaped structural member under the pressure effect of coupling liquid, and then make that the ultrasonic phased array beam emitted by probe can be smoothly transmitted into structural member inside along normal direction, to ensure the accuracy of detection. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structural schematic diagram of the detection device described in the utility model embodiment;

[0023] Figure 2 It is the structural schematic diagram of the probe and water bag structure described in the utility model embodiment;

[0024] Figure 3 It is the structural schematic diagram of the probe and bearing described in the utility model embodiment;

[0025] Figure 4 It is the partial structural schematic diagram of the support assembly described in the utility model embodiment.

[0026] In the drawing:

[0027] 1, probe;

[0028] 2, water bag structure;21, shell;22, flexible film;23, sealing sleeve pad;24, liquid inlet pipe;

[0029] 3, support assembly;31, supporting piece;311, support arm;312, pulley;32, storage pulley;33, adapter;331, adapter plate;

[0030] 4, encoding assembly;41, encoder;42, encoder pulley;

[0031] 5, bearing. DETAILED DESCRIPTION

[0032] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar parts or parts with the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.

[0033] In the description of the utility model, unless another definite provision and limitation, the term "connect", "connection", "fixed" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through the intermediate medium, can be two element internal communication or two element's mutual action relationship. For ordinary skilled in the art, the above-mentioned term can be understood according to the specific meaning in the utility model.

[0034] In the description of the utility model, unless another definite provision and limitation, the feature is "on" or "under" the second feature can include the direct contact of the feature and the second feature, or can include that the feature and the second feature are not in direct contact but are in contact through another feature between them. Moreover, the feature "on", "above" and "on" the second feature includes that the feature is directly above and obliquely above the second feature, or only indicates that the feature is higher than the second feature in horizontal height. The feature "under", "below" and "under" the second feature includes that the feature is directly below and obliquely below the second feature, or only indicates that the feature is lower than the second feature in horizontal height.

[0035] The technical scheme of the utility model is further illustrated below by specific embodiments in combination with the drawings.

[0036] As shown in Figures 1-4 The utility model provides a detection device for the defect detection of U-shaped structural member, including probe 1, water bag structure 2 and support assembly 3, water bag structure 2 includes casing 21 and flexible film 22, casing 21 is provided with accommodating cavity and the operating mouth and liquid inlet that communicate in accommodating cavity, flexible film 22 is connected to casing 21 and can cover operating mouth, probe 1 is connected to casing 21, and the detection end of probe 1 is located in accommodating cavity and is set to operating mouth, support assembly 3 includes the oscillating support 31 of casing 21, two support 31 can oscillate towards the opposite sides of casing 21, support 31 can oscillate relative to casing 21, and two support 31 can be unfolded to the opposite sides of casing 21, and the end of support 31 away from casing 21 is provided with support part, when detection device is in detection state, flexible film 22 and two support parts are attached to the outer surface of U-shaped structural member.

[0037] When the U-shaped structural member is detected, the two support members 31 can be unfolded to the opposite sides of the shell 21 by swinging, changing the support angle and position to adapt to the curvature change of the U-shaped structural member, so that the support part is always attached to the outer surface of the U-shaped structural member, providing stable support for the entire detection device, preventing the probe 1 from shaking or shifting due to the irregular shape of the U-shaped structural member, thereby improving the accuracy of defect detection. And during detection, the coupling liquid is injected into the accommodating cavity through the liquid inlet, so that the flexible film 22 can be tightly attached to the outer surface of the U-shaped structural member under the pressure action of the coupling liquid, and then the ultrasonic phased array beam emitted by the probe 1 can be smoothly transmitted into the structural member along the normal direction, thereby ensuring the accuracy of detection.

[0038] In this embodiment, the shell 21 is a rectangular parallelepiped with a flat surface, which is easier to connect and fix with other equipment or structures.

[0039] In other embodiments, the shell 21 is a cylinder, and the shape of the shell 21 is not specifically limited here.

[0040] The support assembly 3 can be provided with one or more.

[0041] Specifically, as shown in Figure 1 two support assemblies 3 are provided, and the two support assemblies 3 are arranged on the opposite sides of the shell 21 along the first direction, and the support assembly 3 includes two support members 31 arranged along the second direction. The second direction is perpendicular to the first direction. When the detection device is placed on the U-shaped structural member, the support parts of the four support members 31 are tightly attached to the outer surface of the U-shaped structural member, which disperses the weight and pressure of the detection device, so that the detection device is not easy to shake or shift due to the uneven surface of the U-shaped structural member during detection, thereby providing a more reliable basis for stable detection of the probe 1, and further ensuring the accuracy of defect detection.

[0042] The support part can be a roller or a rubber pad.

[0043] Specifically, as shown in Figure 1As shown, the support member 31 comprises a support arm 311 capable of rotating relative to the housing 21 and a pulley 312 serving as a support portion, the one end of the pulley 312 away from the housing 21 being rotatably connected to the support arm 311, and the outer sides of the two pulleys 312 of the support assembly 3 being provided with elastic tracks. The combination of the pulleys 312 makes the detection device move more smoothly on the surface of the U-shaped structure, the elastic tracks increase the contact area between the detection device and the U-shaped structure, disperse the weight of the detection device, have higher support stability, reduce detection interruption and repeated detection caused by shaking, shorten the detection time, and improve the overall detection efficiency. Moreover, when the support arm 311 rotates, the elastic tracks will exert a reverse force on the pulley 312 by virtue of the elastic force of the elastic tracks, so that the pulley 312 abuts against the U-shaped structure to limit the rotation amplitude of the U-shaped structure, ensure the position accuracy of the detection device in the detection process, and avoid that the detection probe 1 deviates from the detection position due to too large rotation amplitude of the support arm 311, so as to further improve the accuracy and reliability of the detection result.

[0044] In other embodiments, the rotation of the support arm 311 can also not be limited by the elastic tracks. Instead, a damper such as a torsional spring damper is arranged at the rotation connection of the support arm 311, so that when the support arm 311 is rotated by an external force, the damper will generate a damping force to hinder the rotation of the support arm 311, so that the pulley 312 on the support arm 311 abuts against the U-shaped structure.

[0045] More specifically, the support arm 311 comprises two oppositely arranged limiting portions, and the pulley 312 is located between and rotatably connected to the two limiting portions. The two limiting portions form lateral constraints on the pulley 312, and when the elastic tracks are arranged on the outer sides of the pulley 312, the limiting portions can block the elastic tracks from deviating to both sides during movement, avoid the elastic tracks from falling off the pulley 312, and ensure normal operation of the detection device.

[0046] In the embodiment, the support arm 311 comprises two detachably connected arm bodies, the arm bodies are provided with the limiting portions, and the pulley 312 is located between and rotatably connected to the limiting portions of the two arm bodies. In use, if the pulley 312 does not rotate smoothly, the arm bodies can be detached and adjusted at any time, improving the convenience of maintenance.

[0047] More specifically, as shown in FIG. 6, the support arm 311 comprises a first arm body 3111 and a second arm body 3112, the first arm body 3111 is provided with a first limiting portion 3111a, the second arm body 3112 is provided with a second limiting portion 3112a, and the pulley 312 is rotatably connected to the first limiting portion 3111a and the second limiting portion 3112a. Figure 1 and Figure 4As shown, the support assembly 3 further comprises a receiving pulley 32, which is rotatable relative to the housing 21, and the outer side of the two pulleys 312 of the support assembly 3 and the receiving pulley 32 are provided with an elastic track belt. The receiving pulley 32 optimizes the running track of the elastic track belt, and during the movement of the detection device, the two pulleys 312 and the receiving pulley 32 jointly support and guide the elastic track belt, so that the stress of the elastic track belt is more uniform, and the risk of deformation and falling of the elastic track belt is reduced.

[0048] Specifically, the support assembly 3 further comprises an adapter 33 connected to the housing 21, and the support member 31 is rotatably connected to the adapter 33. The adapter 33 provides a transition mounting platform for the connection of the support assembly 3 and the housing 21. During installation, the rotating connecting part of the support member 31 can be pre-installed on the adapter 33, and after the angle and position are determined, the adapter 33 is fixed to the housing 21 as a whole. This step-by-step operation reduces the installation difficulty, reduces the inconvenience caused by space limitations during installation, and improves the installation efficiency.

[0049] More specifically, the adapter 33 comprises two detachably connected adapter plates 331, one of which is connected to the housing 21, and the support member 31 is clamped between and rotatably connected to the two adapter plates 331. During installation, the support member 31 can be pre-assembled with one of the adapter plates 331, and after ensuring that these components are installed correctly, the other adapter plate 331 is installed. Not only is the installation simple, but when the support member 31 does not rotate smoothly, only one adapter plate 331 needs to be disassembled to check the support member 31, which is convenient for maintenance.

[0050] In this embodiment, the adapter plate 331 is provided with a first groove and two second grooves, the two adapter plates 331 are connected by bolting, the first grooves of the two adapter plates 331 are connected to form a first chamber, and the two second grooves of the two adapter plates 331 are one-to-one corresponding and connected to form two second chambers, the two second chambers are respectively connected to the first chamber, the receiving pulley 32 is located in the first chamber and is rotatably connected to the two adapter plates 331, and the two arm bodies of the support arm 311 are located in the second chamber and are one-to-one rotatably connected to the two adapter plates 331.

[0051] More specifically, as shown in FIG. 6, the adapter plate 331 is provided with a first groove and two second grooves, the two adapter plates 331 are connected by bolting, the first grooves of the two adapter plates 331 are connected to form a first chamber, and the two second grooves of the two adapter plates 331 are one-to-one corresponding and connected to form two second chambers, the two second chambers are respectively connected to the first chamber, the receiving pulley 32 is located in the first chamber and is rotatably connected to the two adapter plates 331, and the two arm bodies of the support arm 311 are located in the second chamber and are one-to-one rotatably connected to the two adapter plates 331. Figure 1As shown, the detection device further comprises an encoding assembly 4, which comprises an encoder 41 and an encoder pulley 42. The encoder 41 is mounted on the shell 21, and the encoder pulley 42 is connected to the rotating shaft of the encoder 41. When the detection device is in the detection state, the encoder pulley 42 abuts against the outer surface of the U-shaped structure. The encoder pulley 42 rotates with the movement of the detection device, thereby driving the rotating shaft of the encoder 41 to rotate synchronously. The internal encoding mechanism can obtain the rotation data, and further calculate the distance of the movement of the detection device on the U-shaped structure. This enables the detection device to accurately position the part to be detected when performing the detection work, avoids missing detection or repeated detection due to position deviation, and improves the accuracy of detection. It should be noted that the encoder 41 is a conventional electrical element in the art. How to use the encoder 41 to obtain the motion data of the encoder pulley 42, and how to calculate the distance of the movement of the detection device on the U-shaped structure are conventional techniques in the art, which will not be described in detail here.

[0052] In this embodiment, the encoder 41 is mounted on the shell 21 through the adapter 31.

[0053] In other embodiments, the encoder 41 can be directly mounted on the shell 21.

[0054] Specifically, as shown in Figure 2 The water bag structure 2 further comprises a sealing sleeve pad 23 provided with a sleeve hole. The sealing sleeve pad 23 is detachably connected to the shell 21, and the sleeve hole is communicated with the operation port. The flexible film 22 is connected to the sealing sleeve pad 23 and can cover the sleeve hole. During installation, the flexible film 22 is first connected to the sealing sleeve pad 23, and then the sealing sleeve pad 23 is integrally installed on the shell 21. This step-by-step installation method is more convenient and easy to operate. Moreover, the flexible film 22 and the sealing sleeve pad 23 can be pre-assembled and debugged before installation to ensure that their connection is firm and sealed well, and then they are installed on the shell 21, improving the installation efficiency and quality.

[0055] Specifically, as shown in Figures 2-3 The detection device further comprises a carrier 5, which is sleeved on the outer periphery of the probe 1 and is detachably connected to the shell 21. When the probe 1 is installed or dismounted, only the carrier 5 and the shell 21 need to be installed or dismounted, so that the probe 1 can be quickly dismounted or installed, which is convenient for equipment maintenance and improves work efficiency.

[0056] In this embodiment, the carrier 5 abuts against the top surface of the shell 21. When the probe 1 is installed, the operator only needs to insert the detection end of the probe 1 into the accommodating cavity until the carrier 5 abuts against the top end of the shell 21, and then connect the carrier 5 and the shell 21 through the connecting piece. This avoids complex alignment and debugging processes and reduces the installation difficulty.

[0057] In the embodiment, the connecting member is a bolt, which is convenient for dismounting and maintaining.

[0058] In other embodiments, the connecting member can also be a pin, a rivet, etc.

[0059] In the embodiment, as shown in Figures 2-3 The water bag structure 2 further comprises a liquid inlet pipe 24, and the carrying member 5 is provided with a connecting hole communicated with the liquid inlet, and the liquid inlet pipe 24 is arranged in the connecting hole. The liquid inlet pipe 24 provides a special channel for coupling liquid to enter the accommodating cavity of the water bag structure 2, and through the liquid inlet pipe 24, the flow of the coupling liquid injected into the accommodating cavity can be accurately controlled by cooperating with a flow control device such as a valve, a flow meter, etc.; and the liquid inlet pipe 24 can reduce the splashing and fluctuation of the liquid during injection, so as to ensure that the liquid fills the accommodating cavity smoothly. In addition, the connecting hole of the carrying member 5 plays a fixing role on the liquid inlet pipe 24, which can prevent the liquid inlet pipe 24 from shaking or shifting during the liquid conveying process.

[0060] In the embodiment, the material of the shell 21 is organic glass, and the sealing sleeve 23 is made of stainless steel. It should be noted that both the organic glass and the stainless steel are mature technologies in the field.

[0061] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A detection device for detecting defects in U-shaped structural components, characterized in that, include: Probe (1); A water bladder structure (2) includes a shell (21) and a flexible membrane (22). The shell (21) is provided with a receiving cavity and a working port and a liquid inlet communicating with the receiving cavity. The flexible membrane (22) is connected to the shell (21) and can cover the working port. The probe (1) is connected to the shell (21). The detection end of the probe (1) is located in the receiving cavity and is positioned towards the working port. The support assembly (3) includes two swingable support members (31) relative to the housing (21). The two support members (31) can swing toward opposite sides of the housing (21). The end of the support member (31) away from the housing (21) is provided with a support portion. When the detection device is in the detection state, the flexible film (22) and the two support portions are attached to the outer surface of the U-shaped structure.

2. The detection device according to claim 1, characterized in that, There are two support components (3), which are arranged on opposite sides of the housing (21) along a first direction. The two support members (31) of the support components (3) are spaced apart along a second direction, which is perpendicular to the first direction.

3. The detection device according to claim 2, characterized in that, The support member (31) includes a support arm (311) and a pulley (312). The support arm (311) is rotatable relative to the housing (21). The pulley (312) serves as the support part and is rotatably connected to the end of the support arm (311) away from the housing (21). An elastic track is wound around the outer side of the two pulleys (312) of the support assembly (3).

4. The detection device according to claim 3, characterized in that, The support arm (311) includes two limiting parts, and the pulley (312) is located between the two limiting parts and is rotatably connected to the two limiting parts.

5. The detection device according to claim 3, characterized in that, The support assembly (3) also includes a storage pulley (32) which is rotatable relative to the housing (21). The elastic track is wound around the outer side of the two pulleys (312) of the support assembly (3) and the storage pulley (32).

6. The detection device according to claim 1, characterized in that, The support assembly (3) further includes an adapter (33), which is connected to the housing (21), and the support member (31) is rotatably connected to the adapter (33).

7. The detection device according to claim 6, characterized in that, The adapter (33) includes two detachably connected adapter plates (331), one of which is connected to the housing (21), and the support (31) is sandwiched between the two adapter plates (331) and rotatably connected to the two adapter plates (331).

8. The detection device according to claim 1, characterized in that, The detection device further includes an encoding component (4), which includes an encoder (41) and an encoder pulley (42). The encoder (41) is mounted on the housing (21), and the encoder pulley (42) is connected to the rotating shaft of the encoder (41). When the detection device is in the detection state, the encoder pulley (42) abuts against the outer surface of the U-shaped structure.

9. The detection device according to claim 1, characterized in that, The water bladder structure (2) also includes a sealing gasket (23) with a sleeve hole, the sealing gasket (23) being detachably connected to the housing (21), the sleeve hole communicating with the working port, and the flexible film (22) being connected to the sealing gasket (23) and capable of sealing the sleeve hole.

10. The detection device according to any one of claims 1-9, characterized in that, The detection device also includes a carrier (5), which is sleeved on the outer periphery of the probe (1) and detachably connected to the housing (21).

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