Detection tool for air inlet channel of unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle air inlet channel testing fixture, and relates to the technical field of unmanned aerial vehicles, the unmanned aerial vehicle air inlet channel testing fixture comprises a mounting assembly and a piston assembly, the mounting assembly is used for being arranged on an engine thrust beam, the mounting assembly is provided with a mounting position, and the mounting position is arranged towards an unmanned aerial vehicle air inlet channel; a piston assembly is arranged on the installation assembly, the piston assembly can move relative to the installation assembly, the piston assembly is provided with a detection face, the detection face is used for being attached to the end face of the air inlet channel of the unmanned aerial vehicle after the piston assembly moves, and by measuring the moving distance of the piston assembly, the air inlet channel of the unmanned aerial vehicle can be detected. Checking whether the mounting position of the air inlet of the unmanned aerial vehicle meets the digital-analog requirement or not. According to the unmanned aerial vehicle air inlet channel detection tool, through the detection mode of the detection tool, the detection process of the unmanned aerial vehicle air inlet channel is simplified, the assembly precision and the detection efficiency are improved, and meanwhile the requirement for the skill of an operator and the maintenance cost are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to an air intake inspection tool for UAVs. Background Art

[0002] In the drone industry, the assembly accuracy of the intake duct plays a crucial role in engine performance. Precise coordination between the intake duct and the engine ensures stable operation and optimal performance. Incorrect assembly of the intake duct can create a gap between the engine and the rear end of the duct, affecting engine airflow and causing abnormal engine power.

[0003] Existing methods for inspecting air intake assembly primarily use laser trackers. This method establishes a horizontal coordinate system for the aircraft, then picks points on the air intake end face and compares them with the standard coordinate system and the coordinates of the air intake end face. While this method theoretically provides accurate measurement results, in practice, the laser tracker's operational complexity and high operator skill requirements make the entire inspection process time-consuming and error-prone. Furthermore, the high cost and maintenance requirements of laser trackers limit their widespread use in UAV maintenance. Utility Model Content

[0004] The purpose of this application is to provide a UAV air intake inspection fixture, which simplifies the inspection process of the UAV air intake by adopting the inspection fixture method, improves the assembly accuracy and inspection efficiency, and reduces the operator's skill requirements and maintenance costs.

[0005] To achieve the above objectives, the present application provides a UAV air intake inspection tool, comprising:

[0006] A mounting assembly, configured to be mounted on the engine thrust beam, wherein the mounting assembly is provided with a mounting position, the mounting position being arranged toward the air inlet of the UAV;

[0007] A piston assembly is provided on the mounting assembly. The piston assembly can move relative to the mounting assembly. The piston assembly is provided with a detection surface. The detection surface is used to fit with the end face of the drone air inlet after the piston assembly moves. By measuring the movement distance of the piston assembly, it is checked whether the installation position of the drone air inlet meets the digital model requirements.

[0008] In some embodiments, the mounting assembly includes:

[0009] A positioning plate, used for being arranged on the engine thrust beam;

[0010] A sleeve arm is provided on the positioning plate, and the sleeve arm is movably connected to the piston assembly.

[0011] In some embodiments, the positioning plate is provided with a first mounting hole, wherein a fastener for connecting the positioning plate to the engine thrust beam is provided in the first mounting hole;

[0012] The positioning plate is provided with a second mounting hole, in which a fastener for connecting the positioning plate and the sleeve arm is provided.

[0013] In some embodiments, the positioning plate is in the shape of a triangle, and the first mounting holes are provided at the three vertices of the triangle of the positioning plate;

[0014] The positioning plate is provided with a weight-reducing hole, the middle portion of the positioning plate is formed into a circular shape surrounded by the weight-reducing hole, and the second mounting hole is provided at a circumferential position of the circular shape of the positioning plate.

[0015] In some embodiments, the piston assembly comprises:

[0016] a movable part, movably connected to the mounting assembly;

[0017] The detection block is arranged on the movable part, and the detection block is provided with the detection surface.

[0018] In some embodiments, the movable member is provided with a connected piston rod and a mounting seat, the piston rod is movably connected to the sleeve arm of the mounting assembly, and the detection block is provided in the mounting seat.

[0019] In some embodiments, the mounting seat is provided with a mounting groove, and the mounting groove is circular in shape;

[0020] The detection block is in a ring shape, the thickness of the detection block is greater than the depth of the installation groove, and the detection block is arranged in the installation groove.

[0021] In some embodiments, the UAV air intake inspection fixture further includes a fit detection system, wherein the fit detection system includes a medium launch device and a medium detection device, wherein the medium launch device is used to introduce the inspected medium into the UAV air intake, and the medium detection device is used to detect whether the inspected medium overflows at the fit position between the inspection surface and the end face of the UAV air intake to determine the degree of fit;

[0022] The inspected medium includes at least one of a light medium, a gas medium, and a liquid medium.

[0023] In some embodiments, the UAV air intake inspection fixture further includes a movement detection system, which is provided with a linear displacement monitoring device and a movement distance display device. The linear displacement monitoring device is used to detect the movement of the piston assembly, and the movement distance display device is used to receive the detection data of the linear displacement monitoring device and display the movement distance of the piston assembly.

[0024] In some embodiments, the mounting assembly and the piston assembly are provided with scales for indicating the moving distance of the piston assembly.

[0025] Compared with the above-mentioned background technology, the drone air intake inspection fixture provided in this application mainly includes an installation assembly and a piston assembly. The installation assembly is used to be set on the engine thrust beam. The installation assembly is provided with an installation position, and the installation position is set toward the drone air intake; the piston assembly is provided on the installation assembly, and the piston assembly can move relative to the installation assembly. The piston assembly is provided with a detection surface, and the detection surface is used to fit with the end face of the drone air intake after the piston assembly moves. By measuring the moving distance of the piston assembly, it is checked whether the installation position of the drone air intake meets the digital model requirements.

[0026] The UAV air intake inspection fixture provided in this application, through its innovative structural design, effectively solves the problems of existing laser trackers, which are complex, time-consuming, and costly to operate. The fixture consists of a mounting assembly and a piston assembly. The mounting assembly is fixed to the engine thrust beam and designed so that the mounting position directly faces the UAV air intake. This layout simplifies the inspection process and provides a foundation for the inspection fixture to directly contact the air intake, eliminating the need for complex coordinate system establishment and point picking processes.

[0027] The piston assembly's mobility is a core feature of this inspection fixture. It can move relative to the mounting assembly and is equipped with a detection surface. As the piston assembly moves and aligns with the end face of the drone's air intake, the detection surface ensures direct contact with the intake, simulating the conditions of a normal engine and intake installation. By measuring the piston assembly's movement, the inlet's installation position can be directly checked for compliance with the digital model requirements. This process not only improves assembly accuracy but also significantly enhances inspection efficiency.

[0028] Furthermore, due to the relatively simple structure of the gauge, the operator skill requirements are relatively low, allowing even non-professionals to quickly master its use, thus reducing the need for specialized operators. Furthermore, the maintenance cost of the gauge is much lower than that of a laser tracker, as it does not involve complex electronic components, reducing the frequency and cost of maintenance.

[0029] Combined with the above structure and process description, it can be seen that the UAV air intake duct inspection fixture has at least the following beneficial effects: the UAV air intake duct inspection fixture simplifies the inspection process of the UAV air intake duct by adopting the inspection method of the inspection fixture, improves the assembly accuracy and inspection efficiency, and reduces the operator's skill requirements and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0031] Figure 1 A schematic diagram of a UAV air intake inspection fixture and an engine thrust beam provided in an embodiment of the present application;

[0032] Figure 2 Schematic diagram of the drone air inlet inspection fixture and the drone air inlet provided in an embodiment of the present application;

[0033] Figure 3 An exploded view of the drone air intake inspection fixture provided in an embodiment of the present application;

[0034] Figure 4 Schematic diagram of the positioning plate, engine thrust beam and sleeve arm provided in an embodiment of the present application.

[0035] in:

[0036] Engine thrust beam 1, UAV air intake duct 2, mounting assembly 3, positioning plate 31, sleeve arm 32, piston assembly 4, movable part 41, detection block 42, fastener 5. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0039] Please refer to Figure 1 and Figure 2 ,in, Figure 1 Schematic diagram of the drone air intake inspection fixture and engine thrust beam provided in the embodiment of the present application, Figure 2 Schematic diagram of the drone air intake inspection fixture and the drone air intake provided in an embodiment of the present application.

[0040] In the first specific embodiment, the drone air intake inspection fixture provided in the implementation scheme of the present application mainly includes a mounting assembly 3 and a piston assembly 4. The mounting assembly 3 is used to be set on the engine thrust beam 1. The mounting assembly 3 is provided with a mounting position, and the mounting position is set toward the drone air intake 2; the piston assembly 4 is provided on the mounting assembly 3, and the piston assembly 4 can move relative to the mounting assembly 3. The piston assembly 4 is provided with a detection surface, and the detection surface is used to fit with the end face of the drone air intake 2 after the piston assembly 4 moves. By measuring the moving distance of the piston assembly 4, it is checked whether the installation position of the drone air intake 2 meets the digital model requirements.

[0041] As for the working principle of the drone air intake duct inspection fixture, the drone air intake duct inspection fixture simulates the installation structure of the engine, checks whether there is a gap between the front inspection surface and the air intake duct fitting surface, and measures whether the movement of the piston assembly 4 is within the range. The two test results are combined to determine whether the air intake duct meets the requirements.

[0042] The UAV air intake inspection fixture provided in this application, through its innovative structural design, effectively solves the problems of existing laser trackers, which are complex, time-consuming, and costly to operate. The fixture consists of a mounting assembly 3 and a piston assembly 4. The mounting assembly 3 is fixed to the engine thrust beam 1 and is designed so that the mounting position directly faces the UAV air intake 2. This layout simplifies the inspection process and provides a foundation for the inspection fixture to directly contact the air intake, eliminating the need for complex coordinate system establishment and point picking processes.

[0043] The mobility of piston assembly 4 is a core feature of this inspection fixture. It can move relative to mounting assembly 3 and is equipped with a detection surface. As piston assembly 4 moves and aligns with the end face of the drone's air intake duct 2, its detection surface ensures direct contact with the duct, simulating the conditions of a normal engine and intake duct installation. By measuring the movement of piston assembly 4, it is possible to directly check whether the intake duct's installation position meets the digital model requirements. This process not only improves assembly accuracy but also significantly enhances inspection efficiency.

[0044] Furthermore, due to the relatively simple structure of the gauge, the operator skill requirements are relatively low, allowing even non-professionals to quickly master its use, thus reducing the need for specialized operators. Furthermore, the maintenance cost of the gauge is much lower than that of a laser tracker, as it does not involve complex electronic components, reducing the frequency and cost of maintenance.

[0045] Combined with the above structure and process description, it can be seen that the UAV air intake duct inspection fixture has at least the following beneficial effects: the UAV air intake duct inspection fixture simplifies the inspection process of the UAV air intake duct 2 by adopting the inspection method of the inspection fixture, improves the assembly accuracy and inspection efficiency, and reduces the operator's skill requirements and maintenance costs.

[0046] Please refer to Figure 3 and Figure 4 ,in, Figure 3 This is an exploded view of the drone air intake inspection fixture provided in an embodiment of the present application. Figure 4 Schematic diagram of the positioning plate, engine thrust beam and sleeve arm provided in an embodiment of the present application.

[0047] In some embodiments, the mounting assembly 3 includes:

[0048] A positioning plate 31 is used to be arranged on the engine thrust beam 1;

[0049] The sleeve arm 32 is provided on the positioning plate 31 , and the sleeve arm 32 is movably connected to the piston assembly 4 .

[0050] In some embodiments, the positioning plate 31 is provided with a first mounting hole, in which a fastener 5 is provided for connecting the positioning plate 31 to the engine thrust beam 1;

[0051] The positioning plate 31 is provided with a second mounting hole, in which a fastener 5 is provided for connecting the positioning plate 31 and the sleeve arm 32 .

[0052] In this embodiment, the positioning plate 31 is fixed to the engine thrust beam 1 and serves as a base for connecting the inspection fixture to the engine. To achieve this fixation, the positioning plate 31 is designed with a first mounting hole, in which a fastener 5 is installed to firmly connect the positioning plate 31 to the engine thrust beam 1.

[0053] Furthermore, positioning plate 31 is designed with a second mounting hole, which also houses a fastener 5 (the same type of structural member as the fastener 5 in the first mounting hole). This hole connects positioning plate 31 to sleeve arm 32. Sleeve arm 32 is another important part of mounting assembly 3. It is movably connected to piston assembly 4, providing support and limiting its movement.

[0054] This design not only provides a stable platform to support the piston assembly 4, but also allows the piston assembly 4 to move as needed to achieve precise alignment and inspection of the end face of the UAV's air intake duct 2. This structural design improves the applicability of the inspection fixture and the flexibility of the inspection, while also ensuring the stability and reliability of the inspection process.

[0055] In some embodiments, the positioning plate 31 is in the shape of a triangle, and the first mounting holes are provided at the three vertices of the triangle of the positioning plate 31;

[0056] The positioning plate 31 is provided with a weight-reducing hole. The middle portion of the positioning plate 31 is formed into a circular shape surrounded by the weight-reducing hole. The second mounting hole is provided at a circumferential position of the circular shape of the positioning plate 31 .

[0057] In this embodiment, the positioning plate 31 is designed with specific geometrical and functional characteristics to enhance its structural efficiency and practicality. The positioning plate 31 is triangular in shape, which helps provide stability and strength while reducing material usage. This is particularly important in aviation, where reducing weight can improve the performance of drones.

[0058] The first mounting holes are strategically placed at the three vertices of the triangular positioning plate 31. This arrangement allows the positioning plate 31 to be securely connected to the engine thrust beam 1 through these three holes, forming a stable support structure. This three-vertex fixing method helps distribute the force and enhance the stability of the entire inspection fixture.

[0059] Furthermore, to further reduce weight, the center of the positioning plate 31 is designed with lightening holes. These holes form a circular pattern and are spaced apart rather than continuous. This design not only reduces material usage but also maintains the strength and rigidity of the positioning plate 31. Secondary mounting holes are positioned circumferentially within the circle formed by the lightening holes. This arrangement allows the sleeve arm 32 to connect to the positioning plate 31 through these holes while maintaining sufficient flexibility to allow for movement of the piston assembly 4.

[0060] Therefore, the design of the positioning plate 31 combines the requirements of stability, strength and lightweight. Through carefully designed mounting holes and weight-reducing holes, it achieves effective connection with the engine thrust beam 1 and the sleeve arm 32, while providing the piston assembly 4 with the necessary freedom of movement to ensure accurate detection of the UAV air inlet 2.

[0061] In some embodiments, the piston assembly 4 includes:

[0062] The movable member 41 is movably connected to the mounting assembly 3;

[0063] The detection block 42 is provided on the movable member 41 and is provided with a detection surface.

[0064] In this embodiment, the piston assembly 4 is a key part of the UAV air intake inspection fixture, which is responsible for directly contacting and inspecting the end surface of the UAV air intake 2. The piston assembly 4 consists of two main parts: a movable part 41 and a detection block 42.

[0065] The movable member 41 is the portion of the piston assembly 4 that is movably connected to the mounting assembly 3. This movable connection enables the movable member 41 to move relative to the mounting assembly 3. This mobility is key to achieving accurate detection because it allows the piston assembly 4 to adapt to different intake duct positions.

[0066] The inspection block 42 is a key component mounted on the movable member 41 and directly involved in the inspection of the drone's air intake 2. It features a detection surface that comes into direct contact with the end face of the drone's air intake 2 when the piston assembly 4 moves into contact with it. The design and location of this surface are crucial to ensuring accurate inspections, as it forms the interface between the inspection fixture and the air intake 2.

[0067] This design allows the piston assembly 4 to be flexibly moved and accurately positioned on the intake duct end face, and the detection surface can be aligned with the intake duct end face, thereby achieving precise measurement of the intake duct installation position. This structure not only improves detection efficiency but also ensures the accuracy of the test results, helping to promptly detect and correct intake duct assembly errors.

[0068] In some embodiments, the movable member 41 is provided with a connected piston rod and a mounting seat, the piston rod is movably connected to the sleeve arm 32 of the mounting assembly 3, and a detection block 42 is provided in the mounting seat.

[0069] In this embodiment, the design of movable member 41 is further refined, comprising a connected piston rod and mounting seat. The piston rod serves as the articulating connection between movable member 41 and mounting assembly 3. It is movably connected to sleeve arm 32, allowing piston assembly 4 to move relative to mounting assembly 3. This articulating connection is typically achieved through bearings, slip-fits, or other mechanical connections to ensure the piston rod can slide freely within sleeve arm 32, enabling precise position adjustment.

[0070] The mounting base is another part of the movable member 41. It is fixed to the end of the piston rod and is used to support and position the detection block 42. The detection block 42 is set in the mounting base. Its specific position and angle can be adjusted as needed to ensure that the detection surface is accurately aligned and fits the end face of the drone's air inlet 2.

[0071] This design allows the piston assembly 4 to be flexibly adapted to different testing requirements while maintaining structural stability and reliability. The combination of the piston rod and the mounting base provides a sturdy framework, allowing the detection block 42 to be tested at the correct position and angle, thereby improving the accuracy and repeatability of the test.

[0072] In some embodiments, the mounting base is provided with a mounting groove, and the mounting groove is circular in shape;

[0073] The detection block 42 is annular in shape. The thickness of the detection block 42 is greater than the depth of the installation groove. The detection block 42 is disposed in the installation groove.

[0074] In this embodiment, the design of the mounting base includes a specific mounting groove, and the shape of the mounting groove is designed to be circular. This circular mounting groove provides an accurate positioning point for the detection block 42, ensuring that the detection block 42 can be correctly placed in the mounting base.

[0075] The detection block 42 is designed to be annular in shape, allowing it to fit around the circular edge of the mounting slot. The annular detection block 42 has a specific thickness, which is designed to be greater than the depth of the mounting slot. This design ensures that the detection block 42 can be firmly installed in the mounting slot and will not shift or fall off during the detection process. At the same time, it ensures that the detection surface of the detection block 42 effectively contacts the end face of the drone's air inlet 2.

[0076] In some embodiments, the drone air intake inspection fixture further includes a fit detection system, which includes a medium launch device and a medium detection device. The medium launch device is used to introduce the inspected medium into the drone air intake 2, and the medium detection device is used to detect whether the inspected medium overflows at the fitting position between the inspection surface and the end surface of the drone air intake 2 to determine the degree of fit.

[0077] The inspected medium includes at least one of a light medium, a gas medium, and a liquid medium.

[0078] In this embodiment, the drone air intake inspection fixture further integrates a fit detection system, which consists of a medium launch device and a medium detection device. This system is introduced to improve the accuracy and reliability of the inspection process, especially when evaluating the fit between the inspection surface and the end face of the drone air intake 2.

[0079] The medium launcher is used to introduce a test medium into the drone's air intake 2. This test medium can be light, gas, or liquid, depending on the specific test requirements and conditions. For example, light can be used for visual inspection, gas for pressure testing, and liquid for leak testing.

[0080] The media detection device is responsible for detecting whether the tested medium has overflowed at the point where the test surface meets the end face of the drone's air inlet 2. By monitoring the overflow of the tested medium, the degree of fit between the test surface and the air inlet end face can be determined. If the tested medium does not overflow, this indicates that there is no gap between the test surface and the air inlet end face, indicating a good fit. Conversely, if the tested medium overflows, this may indicate a gap, requiring adjustment to the air inlet installation position.

[0081] The introduction of this fit inspection system provides an additional testing method for drone air intake fixtures, enabling a more comprehensive assessment of the assembly quality of the inlet. By using different test media, the system can adapt to different testing scenarios and requirements, thereby increasing the flexibility and practicality of the fixture. This approach not only improves inspection accuracy but also simplifies the operation process, making the test results more intuitive and easy to understand.

[0082] In some cases, taking light media as an example, the medium emitting device adopts a light source device that can emit light, and the medium detection device adopts a sensor that can detect light; taking gas media as an example, the medium emitting device adopts a gas source device that can output gas, and the medium detection device adopts a sensor that can detect gas; taking liquid media as an example, the medium emitting device adopts a water source device that can output liquid, and the medium detection device adopts a sensor that can detect liquid.

[0083] In some embodiments, the UAV air intake inspection fixture also includes a movement detection system, which is provided with a linear displacement monitoring device and a movement distance display device. The linear displacement monitoring device is used to detect the movement of the piston assembly 4, and the movement distance display device is used to receive the detection data of the linear displacement monitoring device and display the movement distance of the piston assembly 4.

[0084] In this embodiment, the design of the drone inlet inspection fixture is further expanded to include a motion detection system. This system is specifically designed to monitor and display the movement of the piston assembly 4 during the inspection process. The motion detection system consists of two main components: a linear displacement monitoring device and a travel distance display device.

[0085] The linear displacement monitoring device monitors the movement of the piston assembly 4 in real time during testing. This device can employ various techniques to measure the linear displacement of the piston assembly 4, such as encoders, laser rangefinders, or other high-precision sensors. This monitoring ensures that the movement of the piston assembly 4 is precise and controlled, which is crucial for ensuring accurate testing.

[0086] The travel distance display device is responsible for receiving the data collected by the linear displacement monitoring device and converting it into the travel distance of the piston assembly 4. This display device can be a digital display screen or a computer interface, which can show the operator the travel distance of the piston assembly 4 in an intuitive way.

[0087] By integrating a mobile inspection system, the drone-mounted air intake inspection fixture not only performs precise physical inspections but also provides real-time data feedback. This data feedback makes the inspection process more transparent and enables operators to more accurately control the inspection process. Furthermore, this system integration increases the degree of inspection automation, reduces the potential for human error, and thus improves the efficiency and reliability of the entire inspection process.

[0088] In some cases, the linear displacement monitoring device is provided on the sleeve arm 32 and / or the movable member 41 , and the moving distance display device is provided on one of the positioning plate 31 , the sleeve arm 32 , and the movable member 41 .

[0089] In a specific embodiment, the use process of the UAV air intake inspection fixture is described as follows.

[0090] The UAV air intake inspection fixture works by simulating the engine's mounting structure to accurately inspect the drone's air intake. To use the fixture, first secure the mounting assembly 3 to the engine's thrust beam 1, ensuring that the positioning plate 31 is securely positioned. Then, the sleeve arm 32 is flexibly connected to the piston assembly 4, preparing for the next inspection steps.

[0091] The movable member 41 of the piston assembly 4 is connected to the sleeve arm 32 via a piston rod, while a detection block 42 is located in the mounting seat of the movable member 41. The detection surface of the detection block 42 is in direct contact with the end surface of the drone's air intake 2, and is used to check whether there is any gap between them. During the detection process, the piston assembly 4 will move, and the distance of movement is monitored in real time by the linear displacement monitoring device and displayed to the operator via the movement distance display device to ensure that the movement of the piston assembly 4 is within the preset range.

[0092] To further verify the degree of fit, the fit detection system introduces a test medium, such as light, gas, or liquid, into the drone's air intake duct 2. The medium transmitter injects the medium, while the medium detector detects whether there is any leakage of the medium at the joint between the test surface and the air intake end face, thereby determining the degree of fit between the two.

[0093] Based on the above test results, if there is no gap between the test surface and the inlet end face, the movement of the piston assembly 4 is within the specified range, and the tested medium does not overflow from the fitting position, then the installation position of the UAV inlet can be determined to meet the digital model requirements. This comprehensive testing method not only improves the accuracy of the test, but also makes the operation process more intuitive and easy to control through real-time data feedback, ensuring the quality and reliability of the UAV inlet assembly.

[0094] In some embodiments, the mounting assembly 3 and the piston assembly 4 are provided with scales for indicating the moving distance of the piston assembly 4 .

[0095] In this embodiment, the UAV air intake inspection fixture uses an intuitive scale marking method to detect the travel distance of the piston assembly 4. Both the mounting assembly 3 and the piston assembly 4 are marked with scales designed to directly indicate the travel distance of the piston assembly 4 during the inspection process.

[0096] This scale system is similar to the markings on a ruler, allowing an operator to visually determine changes in the position of piston assembly 4 relative to mounting assembly 3. As piston assembly 4 moves along mounting assembly 3, the distance it moves can be determined by reading the corresponding scale. For example, if piston assembly 4 moves from scale mark 0 to scale mark 10, the operator can visually determine that piston assembly 4 has moved 10 units.

[0097] The method using scale markings is simple, intuitive, and low-cost. It does not require complex electronics or sensors, making it easier to maintain and operate. Furthermore, scale markings can serve as an auxiliary tool for testing in environments where power is unavailable or electronic equipment is unavailable.

[0098] In a specific embodiment, a method for using the drone air intake inspection fixture is as follows.

[0099] Install the positioning plate 31 and the piston rod. Install the inspection fixture into the mounting hole on the engine thrust beam 1 and tighten it with three ∅10 bolts (of appropriate length).

[0100] Install the detection block 42. After the positioning plate 31 and the piston rod of the inspection fixture are installed in place, install the detection block 42 into the mounting groove of the piston part and the intake duct 2 on the inspection fixture, with the R chamfered end face of the detection block 42 as the heading.

[0101] Inlet duct inspection. Push the inspection fixture piston rod forward naturally until it contacts the rear end of the inlet duct 2. The piston rod should extend or retract by 20±0mm, and there should be no gap between the inspection block 42 and the contact surface of the inlet duct 2. One person can shine a strong light beam into the inlet duct 2 from inside, while another person observes from the outside. If no light leaks around the contact surface, the installation position of the aircraft's inlet duct 2 meets the requirements. If visible light is present, there is a gap, indicating that the installation position of the inlet duct 2 is deviated. A feeler gauge can be used to measure the specific gap value.

[0102] It should be noted that many of the components mentioned in this application are universal standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0103] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0104] The above is a detailed introduction to the drone air intake inspection fixture provided by this application. This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A UAV air intake inspection tool, characterized in that: include: A mounting assembly, configured to be mounted on the engine thrust beam, wherein the mounting assembly is provided with a mounting position, the mounting position being arranged toward the air inlet of the UAV; A piston assembly is provided on the mounting assembly. The piston assembly can move relative to the mounting assembly. The piston assembly is provided with a detection surface. The detection surface is used to fit with the end face of the drone air inlet after the piston assembly moves. By measuring the movement distance of the piston assembly, it is checked whether the installation position of the drone air inlet meets the digital model requirements.

2. The UAV air intake inspection fixture according to claim 1, characterized in that: The installation components include: A positioning plate, used for being arranged on the engine thrust beam; A sleeve arm is provided on the positioning plate, and the sleeve arm is movably connected to the piston assembly.

3. The UAV air intake inspection fixture according to claim 2, characterized in that: The positioning plate is provided with a first mounting hole, in which a fastener for connecting the positioning plate to the engine thrust beam is provided; The positioning plate is provided with a second mounting hole, in which a fastener for connecting the positioning plate and the sleeve arm is provided.

4. The UAV air intake inspection fixture according to claim 3, characterized in that: The positioning plate is in a triangular shape, and the first mounting holes are provided at the three vertices of the triangle of the positioning plate; The positioning plate is provided with a weight-reducing hole, the middle portion of the positioning plate is formed into a circular shape surrounded by the weight-reducing hole, and the second mounting hole is provided at a circumferential position of the circular shape of the positioning plate.

5. The UAV air intake inspection fixture according to claim 1, characterized in that: The piston assembly comprises: a movable part, movably connected to the mounting assembly; The detection block is arranged on the movable part, and the detection block is provided with the detection surface.

6. The UAV air intake inspection fixture according to claim 5, characterized in that: The movable part is provided with a connected piston rod and a mounting seat. The piston rod is movably connected to the sleeve arm of the mounting assembly, and the detection block is arranged in the mounting seat.

7. The UAV air intake inspection fixture according to claim 6, characterized in that: The mounting seat is provided with a mounting groove, and the mounting groove is circular in shape; The detection block is in a ring shape, the thickness of the detection block is greater than the depth of the installation groove, and the detection block is arranged in the installation groove.

8. The UAV air intake inspection fixture according to claim 1, characterized in that: The system further includes a fit detection system, wherein the fit detection system includes a medium launch device and a medium detection device. The medium launch device is used to pass the test medium into the air inlet of the drone. The medium detection device is used to detect whether the test medium overflows at the fit position between the detection surface and the end surface of the drone air inlet to determine the degree of fit. The inspected medium includes at least one of a light medium, a gas medium, and a liquid medium.

9. The UAV air intake inspection fixture according to claim 1, characterized in that: It also includes a movement detection system, which is equipped with a linear displacement monitoring device and a movement distance display device. The linear displacement monitoring device is used to detect the movement of the piston assembly, and the movement distance display device is used to receive the detection data of the linear displacement monitoring device and display the movement distance of the piston assembly.

10. The UAV air intake inspection fixture according to claim 1, characterized in that: The mounting assembly and the piston assembly are provided with scales for indicating the moving distance of the piston assembly.

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