Helicopter composite infrared inspection device

Abstract

The application relates to the technical field of material detection, in particular to a helicopter composite material infrared detection device. The device comprises a base 2, a clamping mechanism 4 and a lifting frame are arranged above the base 2, the clamping mechanism 4 is arranged above the lifting frame, and the lifting frame is lifted relative to the base 2; a sleeve frame 43 is sleeved on the clamping mechanism 4, a clamping device is arranged below the sleeve frame 43, and the clamping device is clamped on the top of the composite material; the device further comprises an infrared emission module 3 and an infrared receiving module 5, the infrared emission module 3 and the infrared receiving module 5 are installed on the lifting frame, and the infrared emission module 3 and the infrared receiving module 5 move synchronously relative to the lifting frame; the infrared emission module 3 is used for emitting an infrared light beam to irradiate the composite material, and the infrared receiving module 5 is used for receiving the infrared light beam transmitted by the composite material.

Description

Technical Field

[0001] This invention relates to the field of materials testing technology, specifically to an infrared testing device for helicopter composite materials. Background Technology

[0002] As an important type of aircraft, helicopters play a crucial role in numerous fields such as military operations, disaster relief, and transportation. With the continuous development of aviation technology, composite materials are being used more and more extensively in helicopter manufacturing to improve performance, reduce energy consumption, and extend service life.

[0003] Composite materials, such as carbon fiber reinforced composites and glass fiber reinforced composites, are widely used in critical components of helicopters, including fuselage structures, rotor blades, and tail booms, due to their advantages such as high specific strength, high specific modulus, corrosion resistance, and strong design flexibility. Taking the fuselage structure as an example, the use of composite materials can significantly reduce the weight of helicopters, thereby improving their flight speed, range, and maneuverability. For rotor blades, the application of composite materials can improve their aerodynamic performance and fatigue resistance, thereby enhancing flight safety and reliability.

[0004] During the manufacturing process of composite materials, various defects can easily occur in stages such as resin impregnation and curing. For example, pores may form, caused by air mixed into the resin or poor gas expulsion during curing; delamination may also occur, where the composite material layers are not tightly bonded, which may be due to improper layup processes or poor adhesion between the resin and fibers. Inspection can detect these manufacturing defects in a timely manner, preventing problematic parts from entering subsequent assembly and use stages.

[0005] Currently, there are many methods for testing composite materials, such as X-ray testing, ultrasonic testing, and visual testing.

[0006] For complex-shaped composite material components for helicopters, ultrasonic testing requires special probes and complex scanning methods, making the process cumbersome and inefficient. Furthermore, ultrasonic testing has limited sensitivity in detecting minute defects in composite materials, such as minor delamination or debonding, which can easily lead to missed defects.

[0007] Radiographic testing can detect some volumetric defects inside composite materials, such as pores and inclusions. However, radiographic testing poses certain radiation hazards to the human body, requiring strict protective measures, and is relatively expensive. Furthermore, radiographic testing is ineffective at detecting planar defects in composite materials, such as interlaminar debonding, and it is difficult to accurately determine the location and size of these defects.

[0008] Visual inspection is the most direct inspection method. Inspectors directly observe defects on the surface of composite materials, such as cracks and scratches, with the naked eye or with the aid of simple tools like magnifying glasses. This method is simple, easy to implement, and low in cost, but it can only detect defects on the surface of the composite material and cannot detect defects hidden inside. Moreover, the accuracy and reliability of visual inspection largely depend on the experience and skills of the inspectors and are easily affected by subjective factors. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide an infrared inspection device for helicopter composite materials, which aims to improve the existing problems in composite material testing methods.

[0010] The technical solution of the present invention is

[0011] An infrared inspection device for helicopter composite materials is provided, including a base 2, a clamping mechanism 4 and a lifting frame are provided above the base 2, the clamping mechanism 4 is located above the lifting frame and the lifting frame moves up and down relative to the base 2; a frame 43 is sleeved on the clamping mechanism 4, a clamping device is provided below the frame 43 and the clamping device is clamped on the top of the composite material.

[0012] It also includes an infrared emitting module 3 and an infrared receiving module 5, which are mounted on the lifting frame and move synchronously relative to the lifting frame; the infrared emitting module 3 is used to emit an infrared beam to irradiate the composite material, and the infrared receiving module 5 is used to receive the infrared beam transmitted by the composite material.

[0013] Furthermore, the top of the sleeve frame 43 is set as an opening, and the bottom is provided with a sliding groove 46. One end of the sliding groove 46 is set as an opening, and an adjusting threaded rod 44 is provided on the inner side of the sliding groove 46. The end of the adjusting threaded rod 44 is connected through the end wall of the sliding groove 46 by a bearing.

[0014] Furthermore, the clamping device includes a baffle 45 and a clamping plate 47. The baffle 45 is fixedly installed below the sleeve frame 43, and the clamping plate 47 is arranged parallel to the side of the baffle 45. A sliding plate 48 is fixedly installed on the top of the clamping plate 47. The sliding plate 48 is installed in the sliding slot 46, and the adjusting threaded rod 44 is threaded through the sliding plate 48.

[0015] Furthermore, the lifting frame includes a lifting tube 8 and a horizontal tube 7. An intermediate tube 82 is provided in the middle of the lifting tube 8. The intermediate tube 82 is sleeved on the vertical tube of the base 2. A second sleeve 72 is provided at the end of the horizontal tube 7. The second sleeve 72 is sleeved on the lifting tube 8. The two horizontal tubes are parallel.

[0016] Further, an internally threaded pipe 84 is fixedly arranged on the side of the middle pipe 82, a threaded post 21 is arranged on the side of the vertical pipe of the base 2, the threaded post 21 threadedly penetrates through the internally threaded pipe 84, and the bottom of the threaded post 21 is connected to the power output shaft of the first motor 22.

[0017] Further, the cross-section of the inner space of the cross pipe 7 is arranged in a Chinese character structure, and a screw rod 71 is arranged inside the cross pipe 7. The end of the screw rod 71 is connected through a bearing and penetrates through the second sleeve 72, and the end of the screw rod 71 protruding from the second sleeve 72 is connected to the power output shaft of the second motor 81 through a sprocket and a chain; a connecting mechanism 6 penetrates through the cross pipe 7, the connecting mechanism 6 is threadedly sleeved on the screw rod 71, and the bottom of the connecting mechanism 6 is connected to the infrared emission module 3 and the infrared receiving module 5.

[0018] Further, an adjusting mechanism 9 is arranged below the lifting pipe 8. The adjusting mechanism 9 includes a bearing seat 91, an adjusting sprocket 92 and a third sleeve 93. The third sleeve 93 is sleeved on the vertical pipe of the base 2, the bearing seat 91 is installed on the third sleeve 93, the central axis of the adjusting sprocket 92 penetrates through the bearing seat 91, and the adjusting sprocket 92 is meshed and connected with the chain.

[0019] Further, the connecting mechanism 6 includes a connecting frame 61 and a plurality of rollers 62. The connecting frame 61 penetrates through the cross pipe 7, the plurality of rollers 62 are arranged at the upper and lower ends of the connecting frame 61, and the plurality of rollers 62 are distributed on the upper and lower sides of the cross pipe 7, and the rollers 62 are in contact with the cross pipe 7 at the same time.

[0020] Further, a vertical plate 63 is arranged below the connecting frame 61, and a strip hole 631 is arranged on the vertical plate 63; an end plate 64 is arranged on the side of the vertical plate 63, a side plate 641 and an internally threaded rod 642 are fixedly arranged on the side wall of the end plate 64. The internally threaded rod 642 is located between the two side plates 641, and a pressing plate 643 is further arranged between the two side plates 641. A bolt penetrating through the pressing plate 643 is threadedly inserted into the internally threaded rod 642.

[0021] Further, a plugging column 66 is fixedly arranged at the top of the vertical plate 63, a plugging groove 65 is arranged at the bottom of the connecting frame 61, a bolt is threadedly penetrated through the side wall of the plugging groove 65, and the plugging column 66 is inserted into the plugging groove 65 through a bearing connection, and the end of the bolt presses against the plugging column 66.

[0022] The beneficial effects of the present application are as follows:

[0023] 1. This invention includes an infrared emitting module and an infrared receiving module, which are located on the side of the composite material and connected to an industrial computer. The infrared emitting and receiving modules can scan the composite material to obtain relevant data, which is then analyzed by the industrial computer to determine whether there are defects in the composite. The operation is relatively simple and efficient, and there is no hazard.

[0024] 2. This invention includes a lifting tube and a second horizontal tube. The lifting tube is fitted onto the vertical tube of the base and rises and falls under the action of a threaded column, providing support for controlling the rise and fall of the infrared emitting module and the infrared receiving module. A screw is provided on the inner side of the second horizontal tube, and the rotation of the screw controls the movement of the connecting mechanism, which can control the movement of the infrared emitting module and the infrared receiving module on the horizontal line. Because the lifting tube and the second horizontal tube are set vertically, the infrared emitting module and the infrared receiving module can be moved arbitrarily in the vertical plane, which facilitates the comprehensive testing of composite materials.

[0025] 3. The present invention provides a plug-in groove at the bottom of the connecting frame and a plug-in post at the top of the vertical plate. The plug-in post is installed in the plug-in groove through a bearing connection, so as to realize the movable and stable connection between the vertical plate and the connecting frame. This provides convenience for adjusting the orientation of the infrared emitting module and the infrared receiving module according to the needs, thereby adapting to different testing and inspection needs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a structural schematic diagram of the base, infrared transmitting module, and infrared receiving module of the present invention;

[0028] Figure 3 This is a schematic diagram of the clamping mechanism of the present invention;

[0029] Figure 4 This is a schematic diagram of the frame structure of the present invention;

[0030] Figure 5 This is a structural schematic diagram of the infrared emitting module, infrared receiving module, second horizontal tube, and rising tube of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the rising pipe of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the second horizontal tube of the present invention;

[0033] Figure 8 This is a schematic diagram of the adjustment mechanism of the present invention;

[0034] Figure 9 This is a schematic diagram of the connection mechanism of the present invention;

[0035] Figure 10 This is a structural schematic diagram of the connecting frame and vertical plate of the present invention;

[0036] Figure 11 This is a schematic diagram of the end plate structure of the present invention;

[0037] In the diagram, the following are marked: 1. Industrial computer; 2. Base; 21. Threaded column; 22. First motor; 3. Infrared transmitting module; 4. Clamping mechanism; 41. First horizontal tube; 42. First sleeve; 421. First limit bolt; 43. Sleeve frame; 44. Adjusting threaded rod; 45. Baffle; 46. Sliding slot; 47. Clamping plate; 48. Sliding plate; 5. Infrared receiving module; 6. Connecting mechanism; 61. Connecting frame; 62. Roller; 63. Vertical plate; 631. Slot; 64. End plate; 641. Side plate; 642. Internally threaded rod; 643. Pressure plate; 65. Insertion slot; 66. Insertion post; 7. Second horizontal tube; 71. Screw; 72. Second sleeve; 73. Second limit bolt; 8. Lifting tube; 81. Second motor; 82. Intermediate tube; 83. Sliding hole; 84. Internally threaded tube; 85. Slot; 9. Adjustment mechanism; 91. Bearing seat; 92. Adjusting sprocket; 93. Third sleeve. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0039] In the description of this invention, it should be understood that the terms "center", "axial", "vertical", "upper", "lower", "upper end", "bottom end", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0040] Example 1

[0041] In order to enable the testing of composite materials that can be used in helicopter manufacturing, this embodiment provides an infrared testing device for helicopter composite materials. This device utilizes the principle of heat conduction and infrared radiation characteristics to detect and test composite materials.

[0042] like Figure 1 , Figure 2 As shown, the device specifically includes a base 2, a clamping mechanism 4, a lifting frame, an infrared emitting module 3, and an infrared receiving module 5. A vertical tube is fixedly installed in the middle of the edge of the base 2, and multiple holes are provided in the vertical tube. Both the clamping mechanism 4 and the lifting frame are fitted onto the vertical tube, and both can be raised and lowered relative to the vertical tube. The clamping mechanism 4 is located above the lifting frame. The infrared emitting module 3 and the infrared receiving module 5 are both mounted on the lifting frame. When the composite material needs to be tested, the composite material is placed below the clamping mechanism 4, and the clamping mechanism 4 stabilizes the composite material above the base 2. Then, by controlling the lifting frame, the infrared emitting module 3 and the infrared receiving module 5 can be raised and lowered. During the raising and lowering movement of the infrared emitting module 3 and the infrared receiving module 5, an external force can be applied to force them to move horizontally. Therefore, the infrared emitting module 3 and the infrared receiving module 5 can move arbitrarily in the vertical plane, providing support for completing the testing and inspection of the entire composite material.

[0043] Both the infrared emitting module 3 and the infrared receiving module 5 are publicly available, and a brief introduction is provided here. The infrared emitting module 3 includes an infrared light source, a driving circuit, and an optical collimation and focusing assembly. The infrared light source uses a high-power, wavelength-stable infrared light-emitting diode (LED) or a quantum cascade laser (QCL) as the core light-emitting element. LEDs offer advantages such as low cost, long lifespan, and ease of driving; QCLs, on the other hand, can generate high-power, narrow-linewidth infrared radiation, suitable for scenarios requiring extremely high detection sensitivity. The driving circuit provides a stable driving current to the infrared light source, ensuring the stability and consistency of the light source's output power. The driving circuit typically includes a constant current source chip, filter capacitors, inductors, and other components. By precisely controlling the current, it enables the infrared light source to emit infrared radiation at the set power and frequency. The optical collimation and focusing assembly consists of optical elements such as lenses and mirrors. Its function is to collimate and focus the diverging light emitted by the infrared light source, allowing the infrared radiation to be more concentrated and accurately irradiated onto the surface of the helicopter composite material, improving energy utilization and detection accuracy.

[0044] The infrared receiving module 5 includes an infrared detector, a signal amplification and filtering circuit, and an analog-to-digital converter (ADC) chip. The infrared detector can be configured as a high-sensitivity detector, such as a mercury cadmium telluride (HgCdTe) detector or a quantum well infrared detector (QWIP). These detectors can quickly and accurately receive infrared signals reflected or transmitted from the surface of the helicopter composite material and convert them into electrical signals for output. The signal amplification and filtering circuit mainly consists of operational amplifiers, resistors, capacitors, and other components. It amplifies weak electrical signals and removes noise interference through filtering, improving signal quality and reliability. The electrical signals output by the detector are usually weak and contain noise, thus requiring processing by the signal amplification and filtering circuit. The analog-to-digital converter (ADC) chip converts the amplified and filtered analog electrical signals into digital signals so that subsequent data processing and analysis systems can process and analyze them. The accuracy and conversion speed of the ADC chip directly affect the performance of the detection system; therefore, it is necessary to select a suitable chip to meet the detection requirements.

[0045] like Figure 3 , Figure 4 As shown, in order to control the stable placement of the composite material through the clamping mechanism 4, the clamping mechanism 4 includes a first horizontal tube 41, a sleeve frame 43, a baffle 45, and a clamping plate 47, etc.

[0046] like Figure 3 As shown, a first sleeve 42 is fixedly installed at the end of the first horizontal tube 41, and a first limiting bolt 421 is threaded through the side wall of the first sleeve 42. When installing the first horizontal tube 41, the first sleeve 42 is sleeved on the vertical tube of the base 2, and the first limiting bolt 421 is inserted into a hole in the vertical tube, thereby making the first horizontal tube 41 stably installed.

[0047] like Figure 4As shown, the top of the sleeve frame 43 is open, and the sleeve frame 43 is fitted onto the first horizontal tube 41. Therefore, the position of the sleeve frame 43 relative to the first horizontal tube 41 can be adjusted as needed. A baffle 45 is fixedly installed below the sleeve frame 43, and a sliding groove 46 is provided on the bottom surface of the baffle 45. One end of the sliding groove 46 is open, and an adjusting threaded rod 44 is provided inside the sliding groove 46. The end of the adjusting threaded rod 44 is connected through a bearing and passes through the end wall of the sliding groove 46. A clamping plate 47 is arranged parallel to the side of the baffle 45, and a sliding clamping plate 48 is fixedly installed on the top of the clamping plate 47. The sliding clamping plate 48 is located inside the sliding groove 46, and the adjusting threaded rod 44 is threaded through the sliding clamping plate 48. With the cooperation of the sliding plate 48 and the sliding slot 46, the clamping plate 47 can be stably and movably installed under the sleeve frame 43. Therefore, rotating the adjusting threaded rod 44 can control the movement of the sliding plate 48 and adjust the relative position of the clamping plate 47 relative to the baffle 45 so that the top of the composite material can be clamped by the cooperation of the clamping plate 47 and the baffle 45, so that the composite material can be placed stably.

[0048] like Figure 2 , Figure 5 , Figure 6 As shown, to control the lifting frame's movement, the lifting frame includes a lifting tube 8, a middle tube 82 in the middle of the lifting tube 8, and an internally threaded tube 84 fixedly installed on the side of the middle tube 82. A threaded post 21 is installed on the side of the vertical tube of the base 2, and the bottom of the threaded post 21 is connected to the power output shaft of the first motor 22 (which can be a servo motor, stepper motor, etc.). When the lifting frame is installed, the middle tube 82 is fitted onto the vertical tube of the base 1, and the threaded post 21 is threaded through the internally threaded tube 84. When the first motor 22 is working, the threaded post 21 can be rotated, forcing the middle tube 82 to drive the lifting tube 8 to move up and down.

[0049] like Figure 5 , Figure 7 As shown, to mount the infrared emitting module 3 and infrared receiving module 5 on the lifting frame and to allow the lifting frame to move, the lifting frame also includes a second horizontal tube 7. A second sleeve 72 is provided at the end of the second horizontal tube 7, and a second limiting bolt 73 is threaded through the second sleeve 72. Multiple slots 85 are provided on the lifting tube 8, distributed along the length of the lifting tube 8. When the lifting frame is assembled, the second sleeve 72 is fitted onto the lifting tube 8, and the second limiting bolt 73 is rotated so that its bottom is inserted into a slot 85, thus controlling the second horizontal tube 7 to be stably positioned on the side of the lifting tube 8. Furthermore, a connecting mechanism 6 is provided through the second horizontal tube 7. The infrared emitting module 3 and infrared receiving module 5 are respectively installed below their respective connecting mechanisms 6. Therefore, during the lifting and lowering of the second horizontal tube 7, the infrared emitting module 3 and infrared receiving module 5 rise and fall synchronously.

[0050] like Figure 7 , Figure 9 As shown, in order to control the infrared emission module 3 and the infrared reception module 5 to move along the length direction of the second horizontal pipe 7, the cross-section of the inner space of the second horizontal pipe 7 is set as a Chinese character structure, and a screw rod 71 is arranged inside the second horizontal pipe 7. The end of the screw rod 71 is connected through a bearing and penetrates through the second sleeve 72. The end of the screw rod 71 protruding from the second sleeve 72 is connected to the power output shaft of the second motor 81 (which can be set as a servo motor, a stepping motor, etc.) through a sprocket and a chain. At the same time, the connecting mechanism 6 includes a connecting rod 61 and a plurality of rollers 62. The connecting rod 61 penetrates through the second horizontal pipe 7. The screw rod 71 is threaded through the connecting rod 61. The plurality of rollers 62 are arranged at the upper and lower ends of the connecting rod 61, and the plurality of rollers 62 are distributed on the upper and lower sides of the second horizontal pipe 7. At the same time, the rollers 62 are in contact with the second horizontal pipe 7, which provides convenience for the connecting mechanism 6 to move along the length direction of the second horizontal pipe 7 on the premise of stably installing the connecting mechanism 6 on the second horizontal pipe 7. Specifically, when the second motor 81 works, the screw rod 71 can be controlled to rotate, forcing the connecting rod 61 to move back and forth along the length direction of the second horizontal pipe 7, thereby realizing the adjustment of the positions of the infrared emission module 3 and the infrared reception module 5.

[0051] As Figure 6 , Figure 7 shown, in order to prevent the lifting pipe 8 from affecting the installation and operation of the screw rod 71, a sliding hole 83 is arranged on the lifting pipe 8. The sliding hole 83 is arranged along the length direction of the lifting pipe 8. Therefore, when installing the second horizontal pipe 7, the end of the screw rod 71 penetrates through the sliding hole 83.

[0052] As Figure 5 , Figure 8 shown, in order to be able to adjust the second horizontal pipe 7 without affecting the power transmission between the second motor 81 and the screw rod 71, an adjusting mechanism 9 is arranged below the lifting pipe 8. The adjusting mechanism 9 includes a bearing seat 91, an adjusting sprocket 92 and a third sleeve 93. The third sleeve 93 is sleeved on the vertical pipe of the base 2, and the bolt threaded through the third sleeve 93 is inserted into a certain hole of the vertical pipe. The bearing seat 91 is installed on the third sleeve 93. The central shaft of the adjusting sprocket 92 penetrates through the bearing seat 91, and the adjusting sprocket 92 is meshed and connected with the chain. Therefore, after adjusting the position of the second horizontal pipe 7 relative to the lifting pipe 8, the straightening degree of the chain can be adjusted by adjusting the height of the adjusting sprocket 92, providing support for the power transmission between the second motor 81 and the screw rod 71.

[0053] As Figure 9 , Figure 11As shown, in order to stably install the infrared emitting module 3 and the infrared receiving module 5 below the connecting mechanism 6, a vertical plate 63 is provided below the connecting frame 61. A slot 631 is provided on the vertical plate 63, and the slot 631 is positioned along the height direction of the vertical plate 63. An end plate 64 is provided on the side of the vertical plate 63. A side plate 641 and an internally threaded rod 642 are fixedly installed on the side wall of the end plate 64. The internally threaded rod 642 is located between the two side plates 641, and a pressure plate 643 is also provided between the two side plates 641. When installing the end plate 64 on the side of the vertical plate 63, the end plate 64 is placed against the vertical plate 63, so that the side plate 641 is located on the outside of the vertical plate 63. The internally threaded rod 642 is installed through the slot 631. Then, the pressure plate 643 is placed on the other end of the two side plates 641, and the bolt threaded through the pressure plate 643 is inserted into the internally threaded rod 642. Therefore, under the action of the bolt, the pressure plate 643 and the end plate 64 can press against the vertical plate 63, so that the end plate 64 is stably installed on the side of the vertical plate 63, thus achieving stable installation of the end plate 64. This arrangement also allows the height of the end plate 64 relative to the vertical plate 63 to be adjusted as needed to adapt to different testing and inspection requirements.

[0054] To enable the inspection and testing of composite materials, infrared emitting module 3, infrared receiving module 5, and a motor are connected to industrial computer 1. Control software runs on the industrial computer, coordinating the operation of the infrared emitting module, infrared receiving module, and motor. The software typically employs a layered architecture, including a driver layer, a control layer, and an application layer. The driver layer communicates with the hardware devices, enabling low-level control of each module; the control layer generates control commands based on the detection task and algorithm and sends them to the driver layer; the application layer provides a user interface for operators to set tasks and view results.

[0055] When the device is started, the industrial computer first initializes each module. It sends initialization commands to the infrared emitting module, setting transmission parameters; calibrates and configures the infrared receiving module; and initializes the motor's position and operating mode. The industrial computer controls the motor to drive the infrared emitting and receiving modules to scan the composite material according to a preset path and speed. During scanning, the industrial computer controls the infrared emitting module to emit infrared radiation of specific wavelengths and power in real time, while simultaneously collecting infrared signals reflected or transmitted from the composite material surface through the infrared receiving module. The motor's movement is precisely synchronized with the infrared emission and reception operations, ensuring accurate acquisition of infrared data at each scanning position. The industrial computer processes and analyzes the collected infrared data in real time to determine if there are defects in the composite material. If an anomaly is detected, the industrial computer can adjust the motor's movement path and the infrared emitting module's transmission parameters according to preset rules, performing a secondary scan or focused inspection to improve detection accuracy. After completing the inspection task, the industrial computer sends stop commands to each module, shutting down the infrared emitting module, stopping the motor's movement, and performing subsequent processing such as data storage and report generation.

[0056] The connection method between the infrared transmitting module 3, the infrared receiving module 5, the motor, and the industrial computer 1 has been disclosed, and will be briefly introduced here.

[0057] Connection between the infrared transmitting module and the industrial computer: The industrial computer typically connects to the infrared transmitting module via a GPIO (General Purpose Input / Output) interface or a serial port (such as RS-232 or RS-485). When using the GPIO interface, the industrial computer outputs digital signals to control the infrared transmitting module's on / off state, as well as adjust parameters such as transmission power and frequency. For example, the transmission power can be changed by outputting PWM (Pulse Width Modulation) signals with different duty cycles. If serial communication is used, the industrial computer can send more complex commands to achieve precise control of the transmitting module, while simultaneously receiving status feedback information from the module.

[0058] Connection between the infrared receiver module and the industrial computer: The infrared receiver module typically outputs analog signals, which must first be converted into digital signals by a data acquisition card. The data acquisition card generally connects to the industrial computer via interfaces such as PCI-Express or USB. A high-speed data interface ensures that large amounts of infrared data are transmitted quickly and accurately to the industrial computer for processing. During the connection process, it may be necessary to condition the signal output by the infrared receiver module, such as through amplification and filtering, to improve signal quality and reduce noise interference.

[0059] Connecting Motors to Industrial Computers: Motors typically require dedicated motor drivers for control. Industrial computers send control signals to the motor drivers via digital interfaces (such as GPIO, CAN bus, etc.). For example, GPIO interfaces output pulse signals to control the number of steps and direction of a stepper motor's rotation; the CAN bus is suitable for distributed control of multiple motors, featuring strong anti-interference capabilities and high communication speeds. To achieve precise control, motors are generally equipped with feedback devices such as encoders to relay the motor's actual operating status (such as speed and position) to the industrial computer. Feedback signals can be transmitted to the industrial computer via appropriate interfaces (such as SPI, I²C, etc.) for real-time monitoring and adjustment.

[0060] Example 2

[0061] like Figure 10 As shown, based on Embodiment 1, in order to adjust the orientation of the infrared emitting module 3 and the infrared receiving module 5 when they are positioned below the same second horizontal tube 7, a plug-in post 66 is fixedly installed at the top of the vertical plate 63, and a plug-in groove 65 is provided at the bottom of the connecting frame 61. A bolt is threaded through the side wall of the plug-in groove 65, and the plug-in post 66 is inserted into the plug-in groove 65 via a bearing connection, enabling the vertical plate 63 to be movably installed relative to the connecting frame 61, providing support for adjusting the orientation of the infrared emitting module 3 and the infrared receiving module 5. After adjusting the orientation of the infrared emitting module 3 and the infrared receiving module 5, the end of the bolt presses against the plug-in post 66, thus ensuring the stable placement of the infrared emitting module 3 and the infrared receiving module 5.

[0062] This invention discloses an infrared inspection device for helicopter composite materials, including a base, a clamping mechanism and a lifting frame disposed above the base, the clamping mechanism being disposed above the lifting frame and the lifting frame being movable relative to the base; a sleeve frame is fitted onto the clamping mechanism, and a clamping device is disposed below the sleeve frame and clamped to the top of the composite material; it also includes an infrared emitting module and an infrared receiving module, which are mounted on the lifting frame; this invention sets up infrared emitting and receiving modules, which are positioned on the side of the composite material and connected to an industrial computer. The infrared emitting and receiving modules can scan the composite material to obtain corresponding data, which is then analyzed by the industrial computer to determine whether the composite material has defects. The operation is relatively simple and efficient, and there is no hazard.

[0063] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0064] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An infrared inspection device for helicopter composite materials, characterized in that, It includes a base (2), above which a clamping mechanism (4) and a lifting frame are provided. The clamping mechanism (4) is arranged above the lifting frame, and the lifting frame can move up and down relative to the base (2). A sleeve frame (43) is sleeved on the clamping mechanism (4), and a clamping device is arranged below the sleeve frame (43), and the clamping device clamps the top of the composite material. It further includes an infrared emission module (3) and an infrared reception module (5). The infrared emission module (3) and the infrared reception module (5) are installed on the lifting frame, and the infrared emission module (3) and the infrared reception module (5) move synchronously relative to the lifting frame. The infrared emission module (3) is used to emit an infrared beam to irradiate the composite material, and the infrared reception module (5) is used to receive the infrared beam transmitted through the composite material. The top of the sleeve frame (43) is open, and a sliding card slot (46) is provided at the bottom. One end of the sliding card slot (46) is open, and an adjusting threaded rod (44) is arranged inside the sliding card slot (46). The end of the adjusting threaded rod (44) is connected through the end wall of the sliding card slot (46) by a bearing. The clamping device includes a baffle (45) and a clamping plate (47). The baffle (45) is fixedly installed below the sleeve frame (43). The clamping plate (47) is arranged parallel to the side of the baffle (45), and a sliding card plate (48) is fixedly arranged at the top of the clamping plate (47). The sliding card plate (48) is installed in the sliding card slot (46), and the adjusting threaded rod (44) threadedly penetrates through the sliding card plate (48). The lifting frame includes a lifting tube (8) and a cross tube (7). An intermediate tube (82) is arranged in the middle of the lifting tube (8). The intermediate tube (82) is sleeved on the vertical tube of the base (2). A second sleeve tube (72) is arranged at the end of the cross tube (7). The second sleeve tube (72) is sleeved on the lifting tube (8). The two cross tubes are parallel. An internally threaded tube (84) is fixedly arranged on the side of the intermediate tube (82). A threaded column (21) is arranged on the side of the vertical tube of the base (2). The threaded column (21) threadedly penetrates through the internally threaded tube (84), and the bottom of the threaded column (21) is connected to the power output shaft of a first motor (22). The cross-sectional shape of the inner space of the cross tube (7) is a Chinese character structure. A screw rod (71) is arranged inside the cross tube (7). The end of the screw rod (71) is connected through the second sleeve tube (72) by a bearing. The end of the screw rod (71) protruding from the second sleeve tube (72) is connected to the power output shaft of a second motor (81) through a sprocket and a chain. A connecting mechanism (6) penetrates through the cross tube (7). The connecting mechanism (6) is threadedly sleeved on the screw rod (71), and the bottom of the connecting mechanism (6) is connected to the infrared emission module (3) and the infrared reception module (5).

2. The infrared inspection device for helicopter composite materials according to claim 1, characterized in that, An adjustment mechanism (9) is provided below the lifting tube (8). The adjustment mechanism (9) includes a bearing seat (91), an adjustment sprocket (92), and a third sleeve (93). The third sleeve (93) is sleeved on the vertical tube of the base (2). The bearing seat (91) is installed on the third sleeve (93). The central axis of the adjustment sprocket (92) passes through the bearing seat (91) and is engaged with the chain.

3. The infrared inspection device for helicopter composite materials according to claim 1, characterized in that, The connecting mechanism (6) includes a connecting frame (61) and multiple rollers (62). The connecting frame (61) passes through the horizontal tube (7). The multiple rollers (62) are arranged at the upper and lower ends of the connecting frame (61) and distributed on the upper and lower sides of the horizontal tube (7). At the same time, the rollers (62) are in contact with the horizontal tube (7).

4. The infrared inspection device for helicopter composite materials according to claim 3, characterized in that, A vertical plate (63) is provided below the connecting frame (61), and a slot (631) is provided on the vertical plate (63); an end plate (64) is provided on the side of the vertical plate (63), and a side plate (641) and an internal thread rod (642) are fixedly provided on the side wall of the end plate (64). The internal thread rod (642) is located between the two side plates (641), and a pressure plate (643) is also provided between the two side plates (641). A bolt threaded through the pressure plate (643) is inserted into the internal thread rod (642).

5. The infrared inspection device for helicopter composite materials according to claim 4, characterized in that, A plug-in post (66) is fixedly installed at the top of the vertical plate (63), and a plug-in groove (65) is provided at the bottom of the connecting frame (61). A bolt is threaded through the side wall of the plug-in groove (65), and the plug-in post (66) is inserted into the plug-in groove (65) through a bearing connection. The end of the bolt abuts against the plug-in post (66).

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