A wind tunnel optical window switching device and method

Abstract

The present application relates to the technical field of wind tunnel test device, especially to a wind tunnel optical window switching device and method. The device comprises two first moving pairs, a first driving part, a first transmission reversing structure, a storage box, two second moving pairs, a second driving part and a second transmission reversing structure. The two first moving pairs are arranged at intervals, and the storage box is located between the two first moving pairs. The storage box has a plurality of placement grooves for placing optical windows along the sliding direction of the horizontal sliding block. Each placement groove is parallel to the end face of the optical window to be installed. The device uses one driving part to synchronously drive the two moving pairs to realize horizontal movement, and uses another driving part to synchronously drive the two moving pairs to realize vertical movement. The device has a simple structure and good movement synchronization, can better ensure the stability and accuracy of movement, reduce the installation difficulty, improve the installation effect, greatly save the wind tunnel test preparation time, and reduce the risk of optical window replacement.

Description

Technical Field

[0001] This invention relates to the field of wind tunnel testing equipment technology, and in particular to a wind tunnel optical window switching device and method. Background Technology

[0002] Wind tunnel equipment can be used for various tests, including heat measurement, force measurement, and pressure measurement. During wind tunnel testing, the test model is installed inside the wind tunnel test section, which is a sealed chamber that is evacuated to a vacuum during the test. Optical windows are provided on the chamber for easy observation. To ensure better sealing, the number of observation windows on the test section is generally kept to a minimum, but different optical windows may be required for different tests. For example, in heat measurement tests, an infrared thermal imager can be used in conjunction with an infrared optical window on the wind tunnel test section or a schlieren microscope tube to measure the surface heat flux of the test model; while in force and pressure measurement flow field diagnostic tests, a schlieren optical window is required to display and analyze the test flow field.

[0003] Currently, the original method for replacing optical windows was manual. The main problems with this method are that optical windows are generally quite heavy (for example, a K9 optical glass with an 800mm aperture, plus accessories, can weigh around 200kg), making installation inconvenient and requiring certain conditions (e.g., airtightness). Therefore, replacing an optical window typically requires 3-4 people, using an overhead crane, and takes 1-2 days, resulting in low efficiency. Furthermore, the glass is fragile, expensive, and replacing Schlieren optical windows carries significant risks. Summary of the Invention

[0004] The purpose of this invention is to provide a wind tunnel optical window switching device and method to improve the efficiency and reliability of optical window replacement.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a wind tunnel optical window switching device, comprising:

[0006] Two first sliding pairs are spaced apart. Each first sliding pair includes a horizontal slide rail and a horizontal slider that slides along the horizontal slide rail. The horizontal slide rails of the two first sliding pairs are arranged in parallel.

[0007] The first drive unit drives two horizontal sliders to slide synchronously along the horizontal slide rail through the first transmission reversing structure.

[0008] The storage box, located between the two first movable pairs, has multiple placement slots for placing optical windows along the sliding direction of the horizontal slider, each placement slot being parallel to the end face of the optical window to be installed.

[0009] Two second sliding joints, each of which includes a vertical frame and a lifting slider. The two vertical frames are respectively mounted on two horizontal sliders. Each vertical frame includes multiple parallel guide posts spaced apart. The lifting slider is sleeved on the multiple guide posts and can drive the lifting slider to slide along the axial direction of the guide posts.

[0010] The second drive unit drives the two lifting sliders to slide synchronously along the guide post via a second transmission reversing structure; and

[0011] The controller is used to control the operation of the first drive unit and the second drive unit, so that the lifting slider can lift the optical window to be installed and move it to the installation position or move the replaced optical window into the placement slot.

[0012] Optionally, each lifting slider is provided with two guide positioning posts spaced apart, and each optical window to be installed is provided with two corresponding guide positioning holes at the lifting position.

[0013] Optionally, a sensor is installed on the end face of the optical window to be installed or on the mounting surface of the optical window. The sensor is connected to the controller signal to detect the installation status of the optical window and feed it back to the controller.

[0014] Optionally, the sensor is a distance sensor or a pressure sensor; or

[0015] There are multiple sensors, including at least one distance sensor and at least one pressure sensor.

[0016] Optionally, the optical window includes a fixed frame, a movable plate, and optical glass disposed on the movable plate;

[0017] The wind tunnel optical window switching device also includes an adjustment device, which includes an adjustment block, an adjustment stud, and two parallel and spaced moving parts. The moving parts include a slide rod and multiple connecting blocks. The multiple connecting blocks are spaced on the slide rod by linear bearings. The slide rod is parallel to the moving plate and its two ends are connected to the fixed frame. The moving plate is fixedly connected to the connecting blocks of the two moving parts.

[0018] The adjustment device is located between two moving parts. The adjustment block is fixed on the moving plate. The adjustment stud is parallel to the slide rod, and one end of the stud passes through the fixed frame and is threadedly connected to the adjustment block. The adjustment stud is also threadedly connected to the fixed frame. By rotating the adjustment stud, the moving plate can move relative to the fixed frame along the axis of the slide rod.

[0019] Optionally, the horizontal slider is provided with an internal thread, and the first transmission reversing structure is threadedly engaged with the horizontal slider through a horizontal lead screw. The rotation of the horizontal lead screw drives the horizontal slider to slide along the horizontal slide rail.

[0020] In each vertical frame, a vertical screw is provided between multiple guide columns. One end of the vertical screw is connected to the second transmission reversing structure. The lifting slider is sleeved on multiple guide columns and is threadedly connected to the vertical screw. Multiple guide columns are evenly distributed around the vertical screw. The rotation of the vertical screw can drive the lifting slider to slide along the axial direction of the guide columns.

[0021] Optionally, the first transmission reversing structure includes two first commutators, which are connected by a first transmission rod, and the two first commutators are respectively connected to two horizontal lead screws;

[0022] The second transmission reversing structure includes two second commutators, which are connected by a second transmission rod. The two second commutators are fixed to the upper end of the vertical frame by mounting bases and are respectively connected to two vertical lead screws.

[0023] Optionally, the wind tunnel optical window switching device also includes a first limit switch, which is connected to the controller to limit the travel of the horizontal slider; and / or

[0024] The wind tunnel optical window switching device is also equipped with a second limit switch, which is connected to the controller and is used to limit the travel of the lifting slider.

[0025] Optionally, both the first drive unit and the second drive unit are servo motors.

[0026] Secondly, the present invention also provides a wind tunnel optical window switching method, which uses a wind tunnel optical window switching device of any implementation of the first aspect to switch the wind tunnel optical window, and the steps are as follows:

[0027] After the wind tunnel optical window switching device is installed in place, it acquires the coordinates of the optical window removal position and the optical window installation position placed in each slot. Based on the stored coordinate information, it sets the movement path and speed of the first and second moving pairs and stores them in the controller to form instructions for removal, installation, disassembly and return for each optical window.

[0028] During the switching of optical windows:

[0029] When the installed optical window is removed, a removal and return command is triggered. The lifting slider moves to a set position to provide support for the installed optical window. After the fixing bolts are removed, the first drive unit and the second drive unit drive the first moving pair and the second moving pair to execute the command to put the removed optical window back into the corresponding placement slot.

[0030] When the installation command is triggered, the first drive unit and the second drive unit respectively drive the first moving joint and the second moving joint to execute the command, lift the slider to the set position to remove the optical window and move it to the installation position. After the optical window is fixed by the fixing bolt, the first moving joint and the second moving joint return to the set initial position, completing the installation of the optical window to be switched.

[0031] The above-described technical solution of the present invention has the following advantages:

[0032] The wind tunnel optical window switching device provided by this invention includes two first moving pairs, a first driving unit, a first transmission reversing structure, a storage box, two second moving pairs, a second driving unit, and a second transmission reversing structure. The two first moving pairs are spaced apart, and the storage box is located between the two first moving pairs. The storage box has multiple placement slots for placing optical windows along the sliding direction of the horizontal slider, and each placement slot is parallel to the end face of the optical window to be installed. Each first moving pair includes a horizontal slide rail and a horizontal slider that slides along the horizontal slide rail. The horizontal slide rails of the two first moving pairs are arranged parallel to each other. Each second moving pair includes a vertical frame and a lifting slider. The vertical frame includes multiple guide posts arranged parallel to each other at intervals. The lifting slider is sleeved on the multiple guide posts and can be driven to slide along the axial direction of the guide posts. The first driving unit drives the two horizontal sliders to slide synchronously along the horizontal slide rail through the first transmission reversing structure, and the second driving unit can drive the two lifting sliders to slide synchronously along the guide posts through the second transmission reversing structure. The controller controls the operation of the first and second drive units, enabling the lifting slider to lift the optical window to be installed and move it to the installation position, or to move the replaced optical window into the placement slot. This device uses one drive unit to synchronously drive two moving pairs for horizontal movement, and another drive unit to synchronously drive two moving pairs for vertical movement. This design not only simplifies the structure but also ensures good synchronization of movement, effectively guaranteeing stability and accuracy, reducing installation difficulty, improving installation results, significantly saving wind tunnel test preparation time, and reducing the risk of optical window replacement.

[0033] The wind tunnel optical window switching method provided by this invention enables switching between multiple optical windows, which greatly saves wind tunnel test preparation time and reduces the risk of optical window replacement. Attached Figure Description

[0034] The accompanying drawings are provided for illustrative purposes only, and the proportions and quantities of the components in the drawings may not be consistent with the actual product.

[0035] Figure 1 This is a front view schematic diagram of a wind tunnel optical window switching device according to an embodiment of the present invention;

[0036] Figure 2 yes Figure 1Another structural schematic diagram of the optical window switching device in the wind tunnel;

[0037] Figure 3 This is a front view schematic diagram of another wind tunnel optical window switching device in an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the structure of an optical window in an embodiment of the present invention;

[0039] Figure 5 yes Figure 4 Another structural diagram of the optical window from another angle;

[0040] Figure 6 This is a schematic diagram of the schlieren lens tube in an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the state of an optical window switching device in a wind tunnel according to an embodiment of the present invention;

[0042] Figure 8 yes Figure 7 A schematic diagram of another angle of the optical window switching device in the wind tunnel.

[0043] In the picture:

[0044] 1: First moving pair;

[0045] 11: Horizontal slide rail;

[0046] 12: Horizontal slider;

[0047] 13: Horizontal lead screw;

[0048] 14: First limit switch;

[0049] 2: First drive unit;

[0050] 3: First transmission reversing structure;

[0051] 31: First commutator;

[0052] 32: First transmission rod;

[0053] 4: Storage box;

[0054] 41: Placement slot;

[0055] 5: Second moving pair;

[0056] 51: Vertical frame;

[0057] 511: Guide column;

[0058] 512: Vertical lead screw;

[0059] 52: Lifting the slider;

[0060] 521: Guide positioning post;

[0061] 53: Mounting bracket;

[0062] 54: Second limit switch;

[0063] 6: Second drive unit;

[0064] 7: Second transmission reversing structure;

[0065] 71: Second commutator;

[0066] 72: Second transmission rod;

[0067] 8: Controller;

[0068] 9: Adjustment device;

[0069] 91: Adjusting block;

[0070] 92: Adjusting stud;

[0071] 93: Mobile Department;

[0072] 931: Sliding rod;

[0073] 932: Connector block;

[0074] 10: Optical window;

[0075] 101: Fixed frame;

[0076] 1011: Guide positioning hole;

[0077] 102: Mobile board;

[0078] 100: Schizophrenia tube. Detailed Implementation

[0079] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0080] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0081] See Figure 1 and Figure 2As shown, the wind tunnel optical window switching device provided in this embodiment of the invention includes two first moving pairs 1, a first driving unit 2, a first transmission reversing structure 3, a storage box 4, two second moving pairs 5, a second driving unit 6, and a second transmission reversing structure 7.

[0082] The two first sliding pairs 1 are spaced apart to allow for installation space. Each first sliding pair 1 includes a horizontal slide rail 11 and a horizontal slider 12 that slides along the horizontal slide rail 11. The horizontal slide rails 11 of the two first sliding pairs 1 are arranged in parallel. The first drive unit 2 drives the two horizontal sliders 12 to slide synchronously along the horizontal slide rail 11 through the first transmission reversing structure 3.

[0083] The storage box 4 is located between two first sliding pairs 1. The storage box 4 has a plurality of placement slots 41 for placing optical windows along the sliding direction of the horizontal slider 12. Each placement slot 41 is parallel to the end face of the optical window to be installed.

[0084] Each second moving pair 5 includes a vertical frame 51 and a lifting slider 52. The two vertical frames 51 are respectively mounted on two horizontal sliders 12. Each vertical frame 51 includes multiple parallel guide posts 511 spaced apart. The lifting slider 52 is sleeved on the multiple guide posts 511 and can drive the lifting slider 52 to slide along the axial direction of the guide posts 511.

[0085] The second drive unit 6 can drive the two lifting sliders 52 to slide synchronously along the guide post 511 through the second transmission reversing structure 7.

[0086] The controller is used to control the operation of the first drive unit 2 and the second drive unit 6, so that the lifting slider 52 can lift the optical window to be installed and move it to the installation position or move the replaced optical window into the placement slot 41.

[0087] In this embodiment, the controller can be a computer or a PLC control module, as long as it can control the drive unit.

[0088] In use, after the wind tunnel optical window switching device is installed, the coordinates of the optical window removal position and the optical window installation position placed in each slot are acquired. Based on the stored coordinate information, the movement paths and speeds of the first and second moving joints are set and stored in the controller to generate instructions for the removal, installation, disassembly, and return of each optical window. The controller operates the first and second drive units, enabling the lifting slider to lift the optical window to be installed and move it to the installation position or move the replaced optical window into the slot.

[0089] The wind tunnel optical window switching device in this embodiment uses one drive unit to synchronously drive two moving pairs to achieve horizontal movement, and another drive unit to synchronously drive two moving pairs to achieve vertical movement. This not only has a simple structure but also good movement synchronization, which can better ensure the stability and accuracy of movement, reduce installation difficulty, improve installation effect (and better ensure installation sealing), greatly save wind tunnel test preparation time, and reduce the risk of optical window replacement.

[0090] See Figure 3 As shown, in one optional embodiment, the controller 8 includes a touch screen and a PLC controller. The PLC controller is installed inside a cabinet, and the touch screen is installed on the cabinet. Through human-machine interaction via the touch screen, control commands are issued to the PLC controller. The PLC controller decomposes the commands and issues speed and position commands to the first drive unit 2 and the second drive unit 6 via a bus, causing the first drive unit 2 and the second drive unit 6 to operate at the given speed and position. The wind tunnel optical window switching device in this embodiment is economical, affordable, and easy to operate, enabling one-button operation and facilitating widespread use.

[0091] In some embodiments, both the first drive unit 2 and the second drive unit 6 are servo motors. The controller controls the servo motors via the servo driver.

[0092] To further ensure operational safety, see [link / reference] Figure 1 and Figure 2 As shown, a first limit switch 14 is also provided on the horizontal slide rail 11. The first limit switch 14 is connected to the controller 8 and is used to limit the travel of the horizontal slider 12. A second limit switch 54 is also provided on the vertical frame 51. The second limit switch 54 is connected to the controller 8 and is used to limit the travel of the lifting slider 52. More preferably, an emergency stop button is provided so that an emergency stop can be achieved by using the emergency stop button in case of emergency. The emergency stop button signal can be sent to the PLC controller through DI. Information such as servo motor overcurrent and overheating can also be transmitted from the servo driver to the PLC controller through the bus.

[0093] To improve the accuracy of positioning and grasping the optical window, and thus achieve reliable installation and placement of the optical window, see [link to relevant documentation]. Figures 1-3 As shown, in some embodiments, each lifting slider 52 is provided with two guide positioning posts 521 spaced apart. See also Figure 4 and Figure 5 As shown, each optical window 10 to be installed has two corresponding guide positioning holes 1011 at its support point. When the lifting slider 52 grasps the optical window 10, even with minor errors, it can be guided to achieve accurate positioning. At the same time, two guide positioning posts 521 are provided at intervals on each lifting slider 52, which can also better ensure the stability of the optical window 10 during movement.

[0094] To further ensure installation accuracy and avoid significant deviations, in some embodiments, sensors are installed on the end face of the optical window to be installed or on the mounting surface of the optical window. These sensors are signal-connected to the controller to detect the installation status of the optical window and provide feedback to the controller. In one embodiment, the sensor is a distance sensor or a pressure sensor. Distance or pressure measurement assists in confirming the movement position, improving installation accuracy. Multiple pressure sensors or distance sensors can be installed simultaneously at multiple locations to further enhance sensor accuracy and better ensure the parallelism between the optical window and the end face to be installed. In another embodiment, multiple sensors are installed, including at least one distance sensor and at least one pressure sensor.

[0095] To enable the same optical window 10 to have multiple observation positions during the experiment by adjustment, see Figure 10 and 10. Figure 5 As shown, in some embodiments, the wind tunnel optical window switching device further includes an adjustment device 9, which includes an adjustment block 91, an adjustment stud 92, and two parallel and spaced moving parts 93. The optical window 10 includes a fixed frame 101, a moving plate 102, and optical glass disposed on the moving plate 102. The moving part 93 includes a slide rod 931 and a plurality of connecting blocks 932. The plurality of connecting blocks 932 are spaced on the slide rod 931 by linear bearings. The slide rod 931 is parallel to the moving plate 102 and its two ends are connected to the fixed frame 101. The moving plate 102 is fixedly connected to the connecting blocks 932 of the two moving parts 93. The adjustment device 9 is located between two moving parts 93. The adjustment block 91 is fixed on the moving plate 102. The adjustment stud 92 is parallel to the slide rod 931. One end of the stud 92 passes through the fixed frame 101 and is threadedly connected to the adjustment block 91. The adjustment stud 92 is also threadedly connected to the fixed frame 101. By rotating the adjustment stud 92, the moving plate 102 can move relative to the fixed frame 101 along the axis of the slide rod 931, thereby allowing the optical window 10 to have different observation positions.

[0096] In this embodiment, any existing structure capable of converting rotational motion into linear motion with the accuracy required by this invention can achieve this solution. This embodiment provides a preferred solution, a structure derived through years of research and iteration. This structure, combined with other structures of the wind tunnel optical window switching device, better realizes the switching of multiple optical windows, making the overall structure of the wind tunnel optical window switching device simple and easy to use. See also [link to implementation details]. Figures 1-3As shown, the horizontal slider 12 has an internal thread. The first transmission reversing structure 3 is threadedly engaged with the horizontal slider 12 through a horizontal lead screw 13. The rotation of the horizontal lead screw 13 drives the horizontal slider 12 to slide along the horizontal slide rail 11. In each vertical frame 51, a vertical lead screw 512 is provided between multiple guide posts 511. One end of the vertical lead screw 512 is connected to the second transmission reversing structure 7. The lifting slider 52 is sleeved on multiple guide posts 511 and threadedly engaged with the vertical lead screw 512. The multiple guide posts 511 are evenly distributed around the vertical lead screw 512. The rotation of the vertical lead screw 512 can drive the lifting slider 52 to slide along the axial direction of the guide posts 511.

[0097] The first transmission reversing structure 3 includes two first commutators 31, which are connected by a first transmission rod 32. The two first commutators 31 are respectively connected to two horizontal lead screws 13.

[0098] The second transmission reversing structure 7 includes two second commutators 71, which are connected by a second transmission rod 72. The two second commutators 71 are fixed to the upper end of the vertical frame 51 by mounting bases 53 and are respectively connected to two vertical lead screws 512. The transmission reversing structure in this embodiment is simple and has good synchronization.

[0099] It should be noted that the commutator in this embodiment is an existing structure, which will not be described in detail here. In this invention, the technical effect is achieved by adjusting the position, combination, and integration of the commutator with other structures.

[0100] See Figures 6-8 As shown, taking the example of an optical window 10 installed at one end of a schlieren tube 100, the working process (switching method) of the wind tunnel optical window switching device is further explained. The two optical windows 10 to be switched are an infrared optical window and a schlieren optical window, with dimensions of 1800mm in length, 1000mm in width, and 130mm in thickness.

[0101] After the wind tunnel optical window switching device is installed in place, it acquires the coordinates of the optical window removal position and the optical window installation position placed in each slot. Based on the stored coordinate information, it sets the movement path and speed of the first and second moving pairs and stores them in the controller to form instructions for removal, installation, disassembly and return for each optical window.

[0102] During the switching of optical windows:

[0103] When the installed optical window is removed, a removal and return command is triggered. The lifting slider moves to a set position to provide support for the installed optical window. After the fixing bolts are removed, the first drive unit and the second drive unit drive the first moving pair and the second moving pair to execute the command to put the removed optical window back into the corresponding placement slot.

[0104] Upon triggering the removal and installation command, the first and second drive units respectively drive the first and second moving joints to execute the command, lifting the slider to the set position to remove the optical window and moving it to the installation position. After the optical window is fixed by the fixing bolts, the first and second moving joints return to the set initial position, completing the installation of the optical window to be switched. This switching method achieves almost fully automatic switching between multiple optical windows (only manual disassembly and installation of locking bolts are required), greatly saving wind tunnel test preparation time and reducing the risk of optical window replacement.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that not every embodiment contains only one independent technical solution, and in the absence of conflict between solutions, the various technical features mentioned in each embodiment can be combined in any way to form other implementation methods that can be understood by those skilled in the art.

[0106] Furthermore, without departing from the scope of the present invention, modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions of some of the technical features, shall not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wind tunnel optical window switching device, characterized in that, include: Two first sliding pairs are spaced apart. Each first sliding pair includes a horizontal slide rail and a horizontal slider that slides along the horizontal slide rail. The horizontal slide rails of the two first sliding pairs are arranged in parallel. The first driving unit drives the two horizontal sliders to slide synchronously along the horizontal slide rail through the first transmission reversing structure; The storage box, located between the two first movable pairs, has a plurality of placement slots for placing optical windows along the sliding direction of the horizontal slider, each of the placement slots being parallel to the end face of the optical window to be installed. Two second sliding joints, each of which includes a vertical frame and a lifting slider. The two vertical frames are respectively mounted on the two horizontal sliders. Each vertical frame includes a plurality of parallel guide posts spaced apart. The lifting slider is sleeved on the plurality of guide posts and can drive the lifting slider to slide along the axial direction of the guide posts. The second drive unit drives the two lifting sliders to slide synchronously along the guide post through the second transmission reversing structure; as well as The controller is used to control the operation of the first drive unit and the second drive unit, so that the lifting slider can lift the optical window to be installed and move it to the installation position or move the replaced optical window into the placement slot; The optical window includes a fixed frame, a movable plate, and optical glass disposed on the movable plate; The wind tunnel optical window switching device also includes an adjustment device, which includes an adjustment block, an adjustment stud, and two parallel and spaced moving parts. Each moving part includes a slide rod and multiple connecting blocks. The multiple connecting blocks are spaced on the slide rod by linear bearings. The slide rod is parallel to the moving plate and its two ends are connected to the fixed frame. The moving plate is fixedly connected to the connecting blocks of the two moving parts. The adjusting device is disposed between the two moving parts. The adjusting block is fixed on the moving plate. The adjusting stud is parallel to the slide rod, one end of which passes through the fixed frame and is threadedly connected to the adjusting block. The adjusting stud is also threadedly connected to the fixed frame. By rotating the adjusting stud, the moving plate can move relative to the fixed frame along the axial direction of the slide rod.

2. The wind tunnel optical window switching device according to claim 1, characterized in that: Each of the lifting sliders is provided with two guide positioning posts spaced apart, and each of the optical windows to be installed is provided with two corresponding guide positioning holes at the lifting position.

3. The wind tunnel optical window switching device according to claim 1, characterized in that: A sensor is installed on the end face of the optical window to be installed or on the mounting surface of the optical window. The sensor is connected to the controller and is used to detect the installation status of the optical window and feed it back to the controller.

4. The wind tunnel optical window switching device according to claim 3, characterized in that: The sensor is a distance sensor or a pressure sensor; or The sensors are multiple, including at least one ranging sensor and at least one pressure sensor.

5. The wind tunnel optical window switching device according to claim 1, characterized in that: The horizontal slider is provided with an internal thread, and the first transmission reversing structure is threadedly engaged with the horizontal slider through a horizontal lead screw. The rotation of the horizontal lead screw drives the horizontal slider to slide along the horizontal slide rail. In each of the vertical frames, a vertical screw is provided between the multiple guide posts. One end of the vertical screw is connected to the second transmission reversing structure. The lifting slider is sleeved on the multiple guide posts and is threadedly connected to the vertical screw. The multiple guide posts are evenly distributed around the vertical screw. The rotation of the vertical screw can drive the lifting slider to slide along the axial direction of the guide posts.

6. The wind tunnel optical window switching device according to claim 5, characterized in that: The first transmission reversing structure includes two first commutators, which are connected by a first transmission rod, and the two first commutators are respectively connected to the two horizontal lead screws; The second transmission reversing structure includes two second commutators, which are connected by a second transmission rod. The two second commutators are fixed to the upper end of the vertical frame by mounting bases and are respectively connected to the two vertical lead screws.

7. The wind tunnel optical window switching device according to claim 1, characterized in that: A first limit switch is also provided, which is connected to the controller, for limiting the travel of the horizontal slider; and / or A second limit switch is also provided, which is connected to the controller and is used to limit the travel of the lifting slider.

8. The wind tunnel optical window switching device according to claim 1, characterized in that: Both the first drive unit and the second drive unit are servo motors.

9. A method for switching wind tunnel optical windows, characterized in that: The wind tunnel optical window switching device as described in any one of claims 1-8 is used to switch the wind tunnel optical window, and the steps are as follows: After the wind tunnel optical window switching device is installed in place, the coordinates of the optical window removal position and the optical window installation position placed in each slot are obtained respectively. The movement path and speed of the first moving pair and the second moving pair are set according to the stored coordinate information and stored in the controller to form instructions for removal, installation and disassembly and return for each optical window. During the switching of optical windows: When the installed optical window is disassembled, a disassembly and return command is triggered. The lifting slider moves to a set position to provide support for the installed optical window. After the fixing bolts are removed, the first drive unit and the second drive unit respectively drive the first moving pair and the second moving pair to execute the command to put the disassembled optical window back into the corresponding placement slot. When the removal and installation command is triggered, the first drive unit and the second drive unit respectively drive the first moving part and the second moving part to execute the command. The lifting slider moves to the set position to remove the optical window and moves it to the installation position. After the optical window is fixed by the fixing bolt, the first moving part and the second moving part return to the set initial position, completing the installation of the optical window to be switched.

Images