Aircraft sensor sealing performance testing device

Abstract

The invention relates to the technical field of aircraft sensor testing, and particularly discloses an aircraft sensor sealing performance testing device which comprises a main console, a simulation detection mechanism, a sample extraction and installation mechanism and an air source unit. The simulation detection mechanism is arranged on the left side of the main console and can automatically detect the sealing performance of the aircraft sensor workpiece; the sample extracting and mounting mechanism is arranged on the front side of the exterior of the simulation detection mechanism, and the sample extracting and mounting mechanism can be used for sampling and selecting aircraft sensor workpieces processed in an assembly line and mounting the aircraft sensor workpieces in the simulation detection mechanism. By adopting an automatic sampling installation detection technology, the sampled sensor is automatically installed on a simulated aircraft structural member, the installation environment of the sensor is simulated more truly, the sealing conditions inside and outside the sensor are detected and evaluated, and the working state of the sensor is simulated, so that the sealing problem occurring in the working process is found in time, and the working efficiency is improved. And repairing and improving.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft sensor testing, in particular to a sealing test device for aircraft sensors. Background Art

[0002] Aircraft sensors are devices used to sense and measure various physical quantities, chemical quantities, and flight status parameters on aircraft. They provide key information for the aircraft's flight control, navigation, engine management, environmental monitoring and other systems to ensure safe flight and efficient operation of the aircraft. Among them, the aircraft angle of attack sensor is an important device used to measure the angle between the aircraft wing and the airflow (angle of attack). The angle of attack sensor provides the pilot with real-time angle of attack information, allowing the pilot to understand the aircraft's flight attitude and airflow conditions, avoid the aircraft from entering a stall state, and ensure flight safety. At the same time, the pilot can adjust the flight attitude based on the angle of attack data, optimize flight performance, and improve fuel efficiency. Efficiency, reduce operating costs, the signal of the angle of attack sensor is one of the important input parameters of the aircraft flight control system. The flight control system automatically adjusts the aircraft's rudder deflection, engine thrust, etc. according to the angle of attack information to maintain the aircraft's stable flight and achieve various flight missions. The blade-type angle of attack sensor consists of a blade installed on the outside of the aircraft body and an angle measuring mechanism. The blade will rotate with the direction of the airflow, and its rotation angle is proportional to the aircraft's angle of attack. The angle measuring mechanism measures the rotation angle of the blade, converts it into an electrical signal or a mechanical signal, and transmits it to the aircraft's instrument or flight control system, thereby displaying the aircraft's angle of attack value; In the prior art, the detection of blade-type angle of attack sensors cannot simulate the actual state after installation. The installed sensor will produce new leakage paths due to the connection parts with the aircraft body, which are difficult to detect in the traditional single sensor sealing test. In addition, the blade-type angle of attack sensor may cause the sealing parts of the sensor to loosen during operation, and this potential risk cannot be discovered in static testing. Summary of the invention

[0003] The object of the present invention is to provide a device for testing the sealing performance of aircraft sensors to solve the problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for testing the sealing performance of aircraft sensors, comprising: a main control console, a simulation detection mechanism, a sample extraction and installation mechanism and an air source unit; the simulation detection mechanism is arranged on the left side of the main control console, and the simulation detection mechanism can automatically detect the sealing performance of aircraft sensor workpieces; the sample extraction and installation mechanism is arranged on the external front side of the simulation detection mechanism, and the sample extraction and installation mechanism can sample and select aircraft sensor workpieces processed on the assembly line and install the aircraft sensor workpieces inside the simulation detection mechanism; the air source unit is arranged on the left side of the simulation detection mechanism, and the air source unit is electrically connected to the main control console.

[0005] Preferably, the simulation detection mechanism includes: a vacuum box, an electrically controlled sealed door, a fixed partition, a helium mass spectrometer leak detector, a movable partition, a first electric telescopic rod, a mounting component and an angle of attack sensor workpiece; the vacuum box is installed on the left side of the main control console, the vacuum box and the gas source unit are connected through a pipeline, and the vacuum box and the main control console are electrically connected; the electrically controlled sealed door is installed at the top opening of the vacuum box, and the electrically controlled sealed door and the main control console are electrically connected; the number of the fixed partitions is two, and the two fixed partitions are respectively installed in the middle of the left and right sides of the interior of the vacuum box along the up and down directions; the helium mass spectrometer leak detector is installed in the vacuum box At the bottom of the inner rear side of the box, the helium mass spectrometer leak detector is electrically connected to the main control console; the movable partition is plugged into the inner sides of the left and right fixed partitions along the up and down direction; the number of the first electric telescopic rods is four, and the four first electric telescopic rods are respectively installed at the inner bottom of the vacuum box along the up and down direction and are located on the front and back sides of the movable partition, and the telescopic ends of the four first electric telescopic rods are respectively connected to the left and right sides of the top ends of the front sides of the movable partition, and the first electric telescopic rod is electrically connected to the main control console; the mounting component is embedded in the middle of the movable partition; the angle of attack sensor workpiece can be detachably installed inside the mounting component.

[0006] Preferably, a simulation detection component is provided in front of the vacuum box, and an auxiliary installation component is provided on the rear side of the movable partition.

[0007] Preferably, the simulation detection component includes: a rotation module, a double-end electric telescopic rod, a first mounting seat, a toggle rod, a fixed seat, a micro motor, a rotation rod and a connecting rod; the rotation module is installed on the inner front side of the vacuum box, and the rotation module is electrically connected to the main control console; the double-end electric telescopic rod is installed on the rear side of the rotating end of the rotation module, and the double-end electric telescopic rod is electrically connected to the main control console; the number of the first mounting seats is two, and the two first mounting seats are respectively installed on the outer sides of the upper and lower telescopic ends of the double-end electric telescopic rod; the number of the toggle rods is two, and the two toggle rods are respectively rotatably connected to the upper and lower first mounting seats through a rotating shaft. inside; the number of the fixing seats is two, and the two fixing seats are respectively mounted on the right inner ends of the upper and lower first mounting seats; the number of the micro motors is two, and the two micro motors are respectively mounted on the rear sides of the upper and lower fixing seats, and the micro motors are electrically connected to the main control console; the number of the rotating rods is two, and one end of the two rotating rods is respectively mounted on the left side of the rotating ends of the upper and lower micro motors; the number of the connecting rods is two, and one end of the two connecting rods is respectively connected to the right front end of the upper and lower toggle rods through a rotating shaft, and the other end of the two connecting rods is respectively connected to the other end of the upper and lower rotating rods through a rotating shaft.

[0008] Preferably, the sample extraction and installation mechanism includes: an AGV robot, a robotic arm and a grabbing and installing component; the AGV robot is arranged on the external front side of the vacuum box, and the AGV robot can be remotely connected to the main console network; the robotic arm is installed on the top of the AGV robot, and the robotic arm and the AGV robot are electrically connected; the grabbing and installing component is installed at the bottom of the end execution part of the robotic arm.

[0009] Preferably, the grabbing and mounting components include: a mounting frame, a second mounting seat, a limiting assembly, a circular shell, a fourth electric telescopic rod, a driven gear, a magnetic screw sleeve, a second motor and a driving gear; the mounting frame is fixedly mounted at the bottom of the end execution part of the robotic arm; the second mounting seat is mounted on the front side of the mounting frame; the limiting assembly is mounted on the bottom of the second mounting seat along the front-to-back direction; the circular shell is mounted on the bottom of the limiting end of the limiting assembly; the fourth electric telescopic rod is mounted on the front side of the second mounting seat, the telescopic end of the fourth electric telescopic rod passes through the second mounting seat and is connected to the front top of the circular shell, and the fourth electric telescopic rod is electrically connected to the AGV robot; the number of the driven gears There are four of them, and the four driven gears are rotatably connected to the rear end of the inner cavity of the circular shell through bearings at a circumferential interval of ninety degrees; there are four of them, and the four magnetic screw sleeves are rotatably connected to the outer rear end of the circular shell through a rotating shaft at a circumferential interval of ninety degrees, and the axes of the four magnetic screw sleeves extend into the inner cavity of the circular shell and are connected to the axes of the four driven gears; the second motor is installed at the front end of the outer side of the circular shell, and the rotating end of the second motor extends into the inner cavity of the circular shell, and the second motor is electrically connected to the AGV robot; the driving gear is fixedly installed on the rear side of the rotating end of the second motor, and the outer side of the driving gear is meshed with the four driven gears.

[0010] Preferably, a workpiece grabbing unit is provided on the inner side of the mounting frame.

[0011] Preferably, the magnetic screw sleeve is made of magnetic material and can magnetically absorb the fixing bolt.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The first electric telescopic rods on the four sides extend to drive the movable partition to move upward along the inner side of the fixed partition out of the vacuum box cavity, the robotic arm drives the grabbing and installing components to insert the tail of the angle of attack sensor workpiece into the inner cavity of the installing component, and the auxiliary installing components clamp and fix the tail of the angle of attack sensor workpiece, the fourth electric telescopic rod extends to drive the circular shell to move backward, so that the four sides of the magnetic screw sleeve The fixing bolts pass through the angle of attack sensor workpiece and the internal fixing screw holes of the installing component in turn, the second motor drives the driving gear to rotate, so that the driven gears on the four sides synchronously drive the magnetic screw sleeve to rotate under the action of the rotational force of the driving gear, so that the magnetic screw sleeves on the four sides lock the internal fixing bolts of the angle of attack sensor workpiece and the inside of the installing component, and the first electric telescopic rod drives the movable partition to descend along the inner side of the fixed partition to the vacuum box cavity.

[0013] 2. The vacuum box discharges the interior to a vacuum negative pressure state, and the gas source unit fills helium of a certain pressure and flow rate into the vacuum box and is located in the space in front of the fixed partitions on the left and right sides. The helium mass spectrometer leak detector detects whether there is helium leaking through the angle of attack sensor workpiece to the space behind the fixed partitions on the left and right sides. If helium leakage is detected, the helium mass spectrometer leak detector sends a corresponding alarm signal to the main control console. During the detection process, the rotation module drives the double-end electric telescopic rod to rotate to a vertical state, and the double-end electric telescopic rod shortens to drive the first mounting seats on the upper and lower sides to drive the toggle rod to move inward to the upper and lower positions of the angle of attack sensor workpiece blade. The micro motors on the upper and lower sides drive the rotating rods at the corresponding positions to rotate intermittently clockwise or counterclockwise, so that the rotating rods on the upper and lower sides drive one end of the connecting rod at the corresponding position to move intermittently inward or outward, and then drive the toggle rod to swing inward or outward on the inner side of the first mounting seat with the cooperation of the upper and lower connecting rods. The toggle rods on the upper and lower sides toggle the blades of the angle of attack sensor workpiece to swing, thereby simulating the working state of the angle of attack sensor workpiece.

[0014] In summary, the present invention adopts automated sampling installation and detection technology to realize automatic installation of sampled sensors on simulated aircraft structures, more realistically simulate the installation environment of the sensors, detect and evaluate the internal and external sealing conditions, and simulate the working state of the sensors, so as to timely discover sealing problems that occur during the working process and make repairs and improvements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Exploded diagram of simulated testing mechanism; Figure 3 for Figure 2 A magnified image of point A; Figure 4 for Figure 2 The enlarged view of point B; Figure 5 for Figure 1 Exploded diagram of the sample extraction installation mechanism; Figure 6 for Figure 5 Exploded view of the grabbing and mounting components; Figure 7 for Figure 6 Enlarged view of point C.

[0016] In the figure: 1, main control console, 2, simulation detection mechanism, 21, vacuum box, 22, electric control sealing door, 23, fixed partition, 24, helium mass spectrometer leak detector, 25, movable partition, 26, first electric telescopic rod, 27, mounting member, 28, angle of attack sensor workpiece, 29, rotation module, 210, double-end electric telescopic rod, 211, first mounting seat, 212, toggle rod, 213, fixed seat, 214, micro motor, 215, rotating rod, 216, connecting rod, 217, mounting plate, 218, guide rail frame, 219, sleeve seat, 220, second electric telescopic rod, 221, first mounting frame, 222, first slot seat, 2 23. Mobile frame, 224. Linear motor, 225. Clamping module, 3. Sample extraction and installation mechanism, 31. AGV robot, 32. Robotic arm, 4. Grasping and installation components, 41. Mounting frame, 42. Second mounting frame, 43. Second slot seat, 44. Insertion rod, 45. Third electric telescopic rod, 46. Clamping seat, 47. Belt cover, 48. First motor, 49. Transmission belt, 410. Second mounting seat, 411. Limiting assembly, 412. Round shell, 413. Fourth electric telescopic rod, 414. Driven gear, 415. Magnetic screw sleeve, 416. Second motor, 417. Driving gear, 5. Air source unit. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 7 The present invention provides a technical solution: a device for testing the sealing performance of an aircraft sensor, comprising: a main control console 1, a simulation detection mechanism 2, a sample extraction and installation mechanism 3 and an air source unit 5, wherein the main control console 1 adopts two operation modes: automatic control and manual control; the simulation detection mechanism 2 is arranged on the left side of the main control console 1, and the simulation detection mechanism 2 can automatically detect the sealing performance of an aircraft sensor workpiece; the sample extraction and installation mechanism 3 is arranged on the external front side of the simulation detection mechanism 2, and the sample extraction and installation mechanism 3 can sample and select the aircraft sensor workpiece processed on the assembly line and install the aircraft sensor workpiece inside the simulation detection mechanism 2; the air source unit 5 is arranged on the left side of the simulation detection mechanism 2, and the air source unit 5 is electrically connected to the main control console 1, and the air source unit 5 is controlled by the main control console 1 to generate helium with a certain pressure and flow rate to be filled into the inside of a vacuum box 21, and the inflation pressure of the air source unit 5 is adjusted according to the detection standard, and the helium inside the vacuum box 21 is recycled after the detection is completed.

[0019] As a preferred solution, further, Figure 2 , Figure 3 and Figure 4 As shown, the simulation detection mechanism 2 includes: a vacuum box 21, an electrically controlled sealed door 22, a fixed partition 23, a helium mass spectrometer leak detector 24, a movable partition 25, a first electric telescopic rod 26, a mounting member 27 and an angle of attack sensor workpiece 28; the vacuum box 21 is installed on the left side of the main control console 1, the vacuum box 21 and the air source unit 5 are connected through a pipeline, the vacuum box 21 and the main control console 1 are electrically connected, the vacuum box 21 is controlled by the main control console 1, and the vacuum box 21 can exhaust the internal air; the electrically controlled sealed door 22 is installed on the left side of the vacuum box 21 At the top opening, the electric-controlled sealing door 22 is electrically connected to the main control console 1, and the electric-controlled sealing door 22 is controlled by the main control console 1. The electric-controlled sealing door 22 can achieve sealing of the top opening of the vacuum box 21; there are two fixed partitions 23, and the two fixed partitions 23 are respectively installed in the middle of the left and right sides of the inside of the vacuum box 21 along the up and down directions. The shape of the fixed partition 23 is a convex structure, and the top of the fixed partition 23 is in contact with the sealing door of the electric-controlled sealing door 22, which can divide the vacuum box 21 into two parts, front and back; helium mass spectrometer The leak detector 24 is installed at the bottom of the rear side of the vacuum box 21, and the helium mass spectrometer leak detector 24 is electrically connected to the main control console 1; the movable partition 25 is plugged into the inner side of the left and right fixed partitions 23 along the up and down direction, and the left and right sides of the movable partition 25 are provided with grooves adapted to be plugged into the fixed partitions 23. The connection between the movable partition 25 and the fixed partition 23 is sealed to ensure that the movable partition 25 moves between the fixed partitions 23 while ensuring the sealing; the number of the first electric telescopic rods 26 is four, and the four first electric telescopic rods 26 are respectively connected along the up and down directions. The first electric telescopic rod 26 is installed at the inner bottom end of the vacuum box 21 and is located at the front and rear sides of the movable partition 25. The telescopic ends of the four first electric telescopic rods 26 are respectively connected to the left and right sides of the top ends of the front sides of the movable partition 25. The first electric telescopic rod 26 is electrically connected to the main control console 1. The first electric telescopic rod 26 is controlled by the main control console 1 to drive the movable partition 25 to move up and down through its own extension and contraction; the mounting component 27 is embedded in the middle of the movable partition 25; the angle of attack sensor workpiece 28 can be removably installed inside the mounting component 27.

[0020] More specifically, Figure 3As shown, a simulation detection component is arranged in front of the vacuum box 21, and the simulation detection component includes: a rotation module 29, a double-ended electric telescopic rod 210, a first mounting seat 211, a toggle rod 212, a fixing seat 213, a micro motor 214, a rotation rod 215 and a connecting rod 216; the rotation module 29 is installed on the inner front side of the vacuum box 21, the rotation module 29 is electrically connected to the main control console 1, the rotation module 29 is controlled by the main control console 1, and the rotation module 29 can drive the double-ended electric telescopic rod 210 to rotate clockwise or counterclockwise; the double-ended electric telescopic rod 21 0 is installed at the rear side of the rotating end of the rotating module 29, the double-end electric telescopic rod 210 is electrically connected to the main control console 1, and the double-end electric telescopic rod 210 is controlled by the main control console 1. The double-end electric telescopic rod 210 can drive the upper and lower first mounting seats 211 to move synchronously inward or outward by its own extension and contraction; the number of the first mounting seats 211 is two, and the two first mounting seats 211 are respectively installed on the outer sides of the upper and lower telescopic ends of the double-end electric telescopic rod 210; the number of the toggle rods 212 is two, and the two toggle rods 212 are respectively connected to the main control console 1 through the rotating shaft. On the inner side of the upper and lower first mounting seats 211, the toggle rod 212 can swing upward or downward on the inner side of the first mounting seat 211, and the rear end of the toggle rod 212 is made of rubber material to avoid damage to the angle of attack sensor workpiece 28 after contacting the blades; there are two fixing seats 213, and the two fixing seats 213 are respectively installed on the right inner ends of the upper and lower first mounting seats 211; there are two micro motors 214, and the two micro motors 214 are respectively installed on the rear sides of the upper and lower fixing seats 213, and the micro motors 214 and the main control console 1 Electrically connected, the micro motor 214 is controlled by the main control console 1, and the micro motor 214 can drive the rotating rod 215 to rotate clockwise or counterclockwise; there are two rotating rods 215, and one end of the two rotating rods 215 is respectively installed on the left side of the rotating end of the upper and lower micro motors 214; there are two connecting rods 216, and one end of the two connecting rods 216 is respectively connected to the right front end of the upper and lower toggle rods 212 through a rotating shaft, and the other end of the two connecting rods 216 is respectively connected to the other end of the upper and lower rotating rods 215 through a rotating shaft.

[0021] More specifically, Figure 2 and Figure 4As shown, the rear side of the movable partition 25 is provided with auxiliary installation components, which include: a mounting plate 217, a guide rail frame 218, a sleeve seat 219, a second electric telescopic rod 220, a first mounting frame 221, a first slot seat 222, a moving frame 223, a linear motor 224 and a clamping module 225; the mounting plate 217 is fixedly mounted on the top of the rear side of the movable partition 25; the guide rail frame 218 is mounted on the rear side of the bottom end of the mounting plate 217 along the up-down direction; the sleeve seat 219 is sleeved on the guide rail frame 218 along the left-right direction. The sleeve seat 219 can move up and down outside the guide frame 218; the second electric telescopic rod 220 is installed at the bottom end of the mounting plate 217 along the up and down direction and is located on the inner side of the guide frame 218, the telescopic end of the second electric telescopic rod 220 is connected to the upper surface of the sleeve seat 219, the second electric telescopic rod 220 is electrically connected to the main control console 1, the second electric telescopic rod 220 is controlled by the main control console 1, and the second electric telescopic rod 220 can drive the sleeve seat 219 to move up and down; the first mounting frame 221 is set at The bottom end of the sleeve seat 219 is located outside the guide rail frame 218; there are two first slot seats 222, and the two first slot seats 222 are installed on the left and right sides of the middle of the top front side of the first mounting frame 221; the moving frame 223 is inserted into the inner cavity of the left and right first slot seats 222 along the front and rear directions, and the moving frame 223 can move back and forth in the inner cavity of the first slot seat 222; the linear motor 224 is installed at the bottom end of the sleeve seat 219, and the telescopic end of the linear motor 224 is connected to the rear bottom of the moving frame 223, and the linear motor 224 is connected to the rear bottom of the moving frame 223. The linear motor 224 is electrically connected to the main control console 1, and the linear motor 224 is controlled by the main control console 1. The linear motor 224 can drive the movable frame 223 to move forward and backward; the clamping module 225 is installed at the front end of the movable frame 223, and the clamping module 225 is electrically connected to the main control console 1, and the clamping module 225 is controlled by the main control console 1. The clamping module 225 can clamp and fix the rear end of the angle of attack sensor workpiece 28, and the clamping structure of the clamping module 225 is adapted to the rear columnar structure of the angle of attack sensor workpiece 28.

[0022] As a preferred solution, further, Figure 5As shown, the sample extraction and installation mechanism 3 includes: an AGV robot 31, a mechanical arm 32 and a grabbing and installing component 4; the AGV robot 31 is arranged on the external front side of the vacuum box 21, the AGV robot 31 can be remotely connected to the main control console 1 through a network, the AGV robot 31 can remotely receive the control signal of the main control console 1 and move to avoid obstacles along a specified route, and the AGV robot 31 is internally provided with a control module which can automatically control the internal electrical components of the sample extraction and installation mechanism 3; the mechanical arm 32 is installed on the top of the AGV robot 31, the mechanical arm 32 and the AGV robot 31 are electrically connected, and the grabbing and installing component 4 is installed at the bottom of the end execution part of the mechanical arm 32, the mechanical arm 32 is automatically controlled by the internal control module of the AGV robot 31, and the mechanical arm 32 can drive the grabbing and installing component 4 to move in multiple angles.

[0023] As a preferred solution, further, Figure 6 and Figure 7As shown, the grabbing and mounting component 4 includes: a mounting frame 41, a second mounting seat 410, a limiting assembly 411, a circular housing 412, a fourth electric telescopic rod 413, a driven gear 414, a magnetic screw sleeve 415, a second motor 416 and a driving gear 417; the mounting frame 41 is fixedly mounted at the bottom of the end execution part of the robot arm 32, the second mounting seat 410 is mounted on the front side of the mounting frame 41, the limiting assembly 411 is mounted on the bottom of the second mounting seat 410 along the front-to-back direction, and the limiting guide rail in the limiting assembly 411 is mounted on the second mounting seat 41 along the front-to-back direction. 0, and the bottom of the limiting guide rail is sleeved with a limiting slider as a limiting end; the circular shell 412 is installed at the bottom of the limiting end of the limiting assembly 411; the fourth electric telescopic rod 413 is installed on the front side of the second mounting seat 410, the telescopic end of the fourth electric telescopic rod 413 passes through the second mounting seat 410 and is connected to the front top of the circular shell 412, the fourth electric telescopic rod 413 is electrically connected to the AGV robot 31, the fourth electric telescopic rod 413 is controlled by the internal control module of the AGV robot 31, and the fourth electric telescopic rod 413 can be controlled by itself The circular housing 412 is driven to move forward and backward by extension and contraction; there are four driven gears 414, which are rotatably connected to the rear end of the inner cavity of the circular housing 412 through bearings at intervals of ninety degrees in the circumferential direction; there are four magnetic screw sleeves 415, which are rotatably connected to the outer rear end of the circular housing 412 through rotating shafts at intervals of ninety degrees in the circumferential direction, and the axes of the four magnetic screw sleeves 415 extend into the inner cavity of the circular housing 412 and are connected to the axes of the four driven gears 414. The magnetic screw sleeves 415 are magnetic The magnetic material can magnetically absorb the fixing bolts; the second motor 416 is installed on the front end of the outside of the circular shell 412, and the rotating end of the second motor 416 extends into the inner cavity of the circular shell 412. The second motor 416 is electrically connected to the AGV robot 31, and the second motor 416 is controlled by the internal control module of the AGV robot 31. The second motor 416 can drive the driving gear 417 to rotate clockwise or counterclockwise; the driving gear 417 is fixedly installed on the rear side of the rotating end of the second motor 416, and the outer side of the driving gear 417 is meshed with the four driven gears 414.

[0024] More specifically, Figure 6As shown, a workpiece grabbing unit is arranged on the inner side of the mounting frame 41, and the workpiece grabbing unit includes: a second mounting frame 42, a second slot seat 43, an insertion rod 44, a third electric telescopic rod 45, a clamping seat 46, a belt cover 47, a first motor 48 and a transmission belt 49; the second mounting frame 42 is rotatably connected to the middle part of the inner right end of the mounting frame 41 through a rotating shaft; the number of the second slot seats 43 is two groups, and the number of the second slot seats 43 in each group is two, and the two groups of second slot seats 43 are respectively embedded in the upper and lower ends and the left and right sides of the inner side of the second mounting frame 42; the insertion rod 44 is There are two groups, each group has two plug rods 44, the two groups of plug rods 44 are respectively plugged into the inner cavities of the two groups of second slot seats 43, and the plug rods 44 can move inward and outward inside the second slot seats 43; there are two third electric telescopic rods 45, the two third electric telescopic rods 45 are respectively installed in the middle of the upper and lower ends of the outer side of the second mounting frame 42, the telescopic end of the third electric telescopic rod 45 extends into the inner side of the second mounting frame 42, the third electric telescopic rod 45 is electrically connected to the AGV robot 31, and the third electric telescopic rod 45 is controlled by the internal control module of the AGV robot 31 The third electric telescopic rod 45 can drive the clamping seat 46 to move inward and outward by its own extension and contraction; there are two clamping seats 46, which are respectively arranged on the inner sides of the upper and lower groups of insertion rods 44, and the telescopic ends of the two third electric telescopic rods 45 are respectively connected to the outer sides of the upper and lower clamping seats 46; the belt cover 47 is installed on the inner left end of the mounting frame 41, and the left side of the axis of the second mounting frame 42 extends into the bottom of the inner cavity of the belt cover 47; the first motor 48 is installed on the top of the outer left end of the belt cover 47, and the rotating end of the first motor 48 extends Into the inner cavity of the belt cover 47, the first motor 48 is electrically connected to the AGV robot 31, and the first motor 48 is controlled by the internal control module of the AGV robot 31. The first motor 48 can drive the pulley at one end of the transmission belt 49 to rotate clockwise or counterclockwise; the axis of the pulley at one end of the transmission belt 49 is connected to the right side of the rotating end of the first motor 48, and the axis of the pulley at the other end of the transmission belt 49 is connected to the left end of the axis of the second mounting frame 42. The pulley at one end of the transmission belt 49 can play a transmission role between the second mounting frame 42 and the first motor 48.

[0025] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows: Step 1: The staff places the fixing bolts inside the four magnetic screw sleeves 415 and fixes them magnetically inside the magnetic screw sleeves 415, controls the main console 1 to start the AGV robot 31, and the preset program inside the AGV robot 31 runs and controls the first motor 48, the mechanical arm 32 and the third electric telescopic rod 45 to start. The AGV robot 31 moves to the sampling position of the angle of attack sensor workpiece 28 in the production line. The first motor 48 drives the second mounting frame 42 to rotate to the horizontal direction inside the mounting frame 41 under the drive of the transmission belt 49, and the mechanical arm 32 drives The second mounting frame 42 in the dynamic grasping mounting component 4 moves to the outside of the angle of attack sensor workpiece 28, and the third electric telescopic rods 45 on both sides extend to drive the clamping seat 46 at the corresponding position to move inward under the limiting action of the insertion rod 44. The first motors 48 on both sides clamp and fix the front and rear sides of the top of the angle of attack sensor workpiece 28. The first motor 48 drives the second mounting frame 42 to flip to a vertical state under the transmission of the transmission belt 49, so that the second mounting frame 42 drives the inner angle of attack sensor workpiece 28 to flip from a vertical position to a horizontal position, and the AGV robot 31 moves to the front side of the vacuum box 21; Step 2: The staff controls the main control console 1 to start the electric-controlled sealing door 22, the first electric telescopic rod 26, the second electric telescopic rod 220, the linear motor 224 and the clamping module 225. The electric-controlled sealing door 22 opens to release the top seal of the inner cavity of the vacuum box 21. The first electric telescopic rods 26 on the four sides extend to drive the movable partition 25 to move upward along the inner side of the fixed partition 23 out of the inner cavity of the vacuum box 21. The robot arm 32 drives the grabbing installation component 4 to insert the tail of the angle of attack sensor workpiece 28 into the installation component 2 7, the second electric telescopic rod 220 extends to drive the sleeve seat 219 to move downward along the guide rail frame 218, so that the sleeve seat 219 drives the first mounting frame 221 to align the front clamping module 225 with the tail position of the angle of attack sensor workpiece 28, and the linear motor 224 drives the moving frame 223 to move forward inside the first slot seat 222, so that the clamping module 225 moves to the outer side of the tail of the angle of attack sensor workpiece 28, and the clamping module 225 clamps and fixes the tail of the angle of attack sensor workpiece 28. The third electric telescopic rods 45 on the upper and lower sides are shortened to drive the clamping seat 46 to return to the starting position. The preset program inside the AGV robot 31 controls the fourth electric telescopic rod 413 and the second motor 416 to start. The fourth electric telescopic rod 413 extends to drive the circular housing 412 to move backward, so that the four-side fixing bolts of the magnetic screw sleeve 415 pass through the internal fixing screw holes of the angle of attack sensor workpiece 28 and the mounting component 27 in sequence. The second motor 416 drives the driving gear 417 to rotate, so that the four-side driven gears 414 synchronously drive the magnetic screw sleeve 415 to rotate under the action of the rotation force of the driving gear 417, so that the four-side magnetic screw sleeves 415 lock the internal fixing bolts of the angle of attack sensor workpiece 28 and the mounting component 27. The fourth electric telescopic rod 413 shortens to drive the circular housing 412 to return to the initial position, and the first electric telescopic rod 26 shortens to drive the movable partition 25 to descend along the inner side of the fixed partition 23 to the inner cavity of the vacuum box 21, and the electrically controlled sealing door 22 is closed to re-seal the inner cavity of the vacuum box 21. Step 3: The staff controls the main control console 1 to start the vacuum box 21, the gas source unit 5, the helium mass spectrometer leak detector 24, the rotating module 29, the double-ended electric telescopic rod 210, and the micro motor 214. The vacuum box 21 discharges the interior to a vacuum negative pressure state. The gas source unit 5 fills helium with a certain pressure and flow into the vacuum box 21 and the space in front of the fixed partitions 23 on the left and right sides. The helium mass spectrometer leak detector 24 detects whether there is helium leaking through the angle of attack sensor workpiece 28 to the space behind the fixed partitions 23 on the left and right sides. If helium leakage is detected, the helium mass spectrometer leak detector 24 sends a corresponding alarm signal to the main control console 1. During the detection process, the rotating module 29 drives the double-ended electric telescopic rod 210 to rotate. The double-end electric telescopic rod 210 shortens and drives the first mounting seats 211 on the upper and lower sides to drive the toggle rod 212 to move inward to the upper and lower sides of the blades of the angle of attack sensor workpiece 28. The micro-motors 214 on the upper and lower sides drive the rotating rods 215 on the corresponding positions to rotate intermittently clockwise or counterclockwise, so that the rotating rods 215 on the upper and lower sides drive one end of the connecting rod 216 on the corresponding positions to move intermittently inward or outward, and then drive the toggle rod 212 to swing inward or outward on the inner side of the first mounting seat 211 with the cooperation of the upper and lower connecting rods 216. The toggle rods 212 on the upper and lower sides toggle the blades of the angle of attack sensor workpiece 28 to make it swing, thereby simulating the working state of the angle of attack sensor workpiece 28.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for testing the sealing performance of aircraft sensors, characterized in that: include: Main console (1); A simulation detection mechanism (2) is arranged on the left side of the main control console (1), and the simulation detection mechanism (2) is capable of automatically detecting the sealing performance of an aircraft sensor workpiece; A sample extraction and installation mechanism (3) is arranged on the front side of the exterior of the simulation detection mechanism (2), and the sample extraction and installation mechanism (3) is capable of sampling aircraft sensor workpieces processed on the assembly line and installing the aircraft sensor workpieces inside the simulation detection mechanism (2); The air source unit (5) is arranged on the left side of the simulation detection mechanism (2), and the air source unit (5) is electrically connected to the main control console (1).

2. The device for testing the sealing performance of aircraft sensors according to claim 1, characterized in that: The simulation detection mechanism (2) comprises: A vacuum box (21) is installed on the left side of the main control console (1), the vacuum box (21) and the air source unit (5) are connected via a pipeline, and the vacuum box (21) and the main control console (1) are electrically connected; An electrically controlled sealed door (22) is installed at the top opening of the vacuum box (21), and the electrically controlled sealed door (22) is electrically connected to the main control console (1); A fixed baffle (23), wherein the number of the fixed baffles (23) is two, and the two fixed baffles (23) are respectively installed in the middle of the left and right sides of the inside of the vacuum box (21) along the up and down direction; A helium mass spectrometer leak detector (24) is installed at the bottom end of the rear side of the vacuum box (21), and the helium mass spectrometer leak detector (24) is electrically connected to the main control console (1); A movable partition (25) is inserted into the inner sides of the two left and right fixed partitions (23) along the up-down direction; a first electric telescopic rod (26), the number of the first electric telescopic rods (26) being four, the four first electric telescopic rods (26) being respectively mounted at the inner bottom end of the vacuum box (21) in the up-down direction and being located at the front and rear sides of the movable partition (25), the telescopic ends of the four first electric telescopic rods (26) being respectively connected to the left and right sides of the top ends of the front sides of the movable partition (25), and the first electric telescopic rods (26) being electrically connected to the main control console (1); A mounting member (27) embedded in the middle of the movable partition (25); An angle of attack sensor workpiece (28) is detachably mounted inside the mounting component (27).

3. The device for testing the sealing performance of aircraft sensors according to claim 2, characterized in that: A simulation detection component is arranged in front of the vacuum box (21), and an auxiliary installation component is arranged on the rear side of the movable partition (25).

4. The device for testing the sealing performance of aircraft sensors according to claim 3, characterized in that: The simulation detection component comprises: A rotating module (29) is installed on the front side of the interior of the vacuum box (21), and the rotating module (29) is electrically connected to the main control console (1); A double-ended electric telescopic rod (210) is installed at the rear side of the rotating end of the rotating module (29), and the double-ended electric telescopic rod (210) is electrically connected to the main control console (1); A first mounting seat (211), the number of the first mounting seats (211) being two, and the two first mounting seats (211) being respectively mounted on the outside of the upper and lower telescopic ends of the double-end electric telescopic rod (210); A toggle rod (212), wherein the number of the toggle rods (212) is two, and the two toggle rods (212) are rotatably connected to the inner sides of the upper and lower first mounting seats (211) respectively via a rotating shaft; A fixing seat (213), wherein the number of the fixing seats (213) is two, and the two fixing seats (213) are respectively mounted on the right inner ends of the upper and lower first mounting seats (211); A micro motor (214), wherein the number of the micro motors (214) is two, and the two micro motors (214) are respectively mounted on the rear sides of the upper and lower fixing seats (213), and the micro motors (214) are electrically connected to the main control console (1); Rotating rods (215), the number of the rotating rods (215) being two, one end of the two rotating rods (215) being respectively mounted on the left side of the rotating ends of the upper and lower micro motors (214); Connecting rods (216), the number of the connecting rods (216) is two, one end of the two connecting rods (216) is rotatably connected to the front end of the right side of the upper and lower toggle rods (212) through a rotating shaft, and the right sides of the other ends of the two connecting rods (216) are rotatably connected to the other ends of the upper and lower rotating rods (215) through a rotating shaft.

5. The device for testing the sealing performance of aircraft sensors according to claim 4, characterized in that: The sample extraction and installation mechanism (3) comprises: An AGV robot (31) is arranged on the front side of the outside of the vacuum box (21), and the AGV robot (31) can be remotely connected to the main control console (1) via a network; A mechanical arm (32) is mounted on the top of the AGV robot (31), and the mechanical arm (32) and the AGV robot (31) are electrically connected; The grabbing and mounting component (4) is mounted at the bottom of the end execution part of the mechanical arm (32).

6. The device for testing the airtightness of aircraft sensors according to claim 5, characterized in that: The grabbing and mounting component (4) comprises: A mounting frame (41) fixedly mounted on the bottom of the end execution part of the mechanical arm (32); A second mounting seat (410) mounted on the front side of the mounting frame (41); A limiting assembly (411) mounted on the bottom of the second mounting seat (410) along the front-to-back direction; A circular housing (412) mounted on the bottom of the limiting end of the limiting component (411); a fourth electric telescopic rod (413) mounted on the front side of the second mounting seat (410), the telescopic end of the fourth electric telescopic rod (413) passing through the second mounting seat (410) and connected to the front top of the circular housing (412), the fourth electric telescopic rod (413) being electrically connected to the AGV robot (31); Driven gears (414), the number of the driven gears (414) being four, and the four driven gears (414) being rotatably connected to the rear end of the inner cavity of the circular housing (412) via bearings at 90-degree intervals in the circumferential direction; A magnetic screw sleeve (415), wherein the number of the magnetic screw sleeves (415) is four, and the four magnetic screw sleeves (415) are rotatably connected to the outer rear end of the circular housing (412) via a rotating shaft at intervals of ninety degrees in the circumferential direction, and the axes of the four magnetic screw sleeves (415) extend into the inner cavity of the circular housing (412) and are connected to the axes of four driven gears (414); A second motor (416) is mounted on the front end of the circular housing (412), the rotating end of the second motor (416) extends into the inner cavity of the circular housing (412), and the second motor (416) is electrically connected to the AGV robot (31); A driving gear (417) is fixedly mounted on the rear side of the rotating end of the second motor (416), and the outer side of the driving gear (417) is meshed with the four driven gears (414).

7. The device for testing the airtightness of aircraft sensors according to claim 6, characterized in that: A workpiece grabbing unit is arranged on the inner side of the mounting frame (41).

8. The device for testing the airtightness of aircraft sensors according to claim 7, characterized in that: The magnetic screw sleeve (415) is made of magnetic material and can magnetically absorb and fix the bolt.

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