Wind wall system for wind resistance test

Abstract

The invention relates to the technical field of aircraft wind resistance tests, in particular to a wind resistance test wind wall system which comprises a moving mechanism, a lifting mechanism, a pitching mechanism and a wind wall at least installed on the pitching mechanism. The moving mechanism comprises a base, and the lifting mechanism is installed on the base. The at least two roller groups are distributed along the first direction, and each roller group comprises at least one roller movably assembled on the base; part of the rollers are in transmission assembly with the first driving parts so as to realize rotation; the lifting mechanism comprises a lifting part capable of reciprocating in the vertical direction, and the pitching mechanism is at least installed on the lifting part; the pitching mechanism serves as a mechanism for driving the wind wall to rotate back and forth along an axis so as to adjust the wind field, and the extending direction of the axis is orthogonal to the vertical direction and perpendicular to or parallel to the first direction. The wind resistance test wind wall system can simulate various wind field conditions encountered by an aircraft in real flight.

Description

Technical Field

[0001] This invention relates to the field of aircraft wind resistance testing technology, specifically to a wind wall system for wind resistance testing. Background Technology

[0002] With the rapid development of civilian drone technology, its applications have widely covered multiple fields such as aerial surveying and mapping, logistics delivery, power line inspection, and emergency rescue. The flight performance and operational safety of drones are receiving increasing market attention. In complex weather environments, strong wind interference is one of the core factors affecting the flight stability of drones. Their wind resistance directly determines mission execution efficiency and equipment operational safety, becoming a key indicator for measuring the core competitiveness of drone products. Therefore, accurate and comprehensive testing and evaluation of drone wind resistance has become an indispensable and important part of the industry's development.

[0003] Among existing methods for testing the wind resistance of drones, fixed wind tunnel testing is a relatively traditional approach. This method, by constructing a closed airflow environment, can provide stable and controllable wind speed conditions, making it valuable for basic wind resistance performance testing of drones in hovering positions. However, fixed wind tunnels have limited wind direction adjustment capabilities, only achieving airflow output in a single direction. Furthermore, the equipment is expensive and bulky, requiring significant investment in testing sites and resources. More importantly, drones experience various dynamic conditions during actual flight, such as crosswind flight, headwind acceleration, and landing. Their relative angle and spatial displacement with the wind direction are constantly changing. Fixed wind tunnel testing, however, only allows drones to hover or move within a small range, failing to simulate these complex dynamic scenarios. This results in significant discrepancies between the test results and real-world operating conditions, making it difficult to fully reflect the actual wind resistance capabilities of drones.

[0004] Natural wind field testing is another common testing method, relying on real wind field conditions in the outdoor natural environment without the need for additional airflow devices. However, this method has significant limitations: the wind speed and direction of natural wind fields are greatly affected by weather changes, exhibiting strong uncertainty and making it impossible to precisely control the testing conditions; at the same time, due to the non-repeatability of natural wind fields, comparative experiments with the same parameters are difficult to conduct, resulting in lengthy testing cycles, and poor consistency of test data obtained from different batches and time periods, making it impossible to form standardized test conclusions and failing to meet the requirements for objectivity and comparability of test results in scenarios such as UAV product development and quality inspection.

[0005] To compensate for the shortcomings of the above solutions, some technical solutions have incorporated simplified wind direction adjustment devices. These devices adjust the direction of the wind source output through mechanical structures, improving the problem of a single wind direction to some extent. However, they still have significant drawbacks: their wind direction adjustment is limited to horizontal turning, failing to achieve multi-angle adjustment in three-dimensional space; furthermore, these devices typically cannot simultaneously change the relative height and spatial position between the wind source and the drone, limiting the coverage of the test scenario. In actual drone flight, wind field interference involves not only horizontal angular changes but also vertical airflow effects. Changes in the relative position of the wind source and the drone directly affect the realism of wind resistance testing. Therefore, simplified wind direction adjustment devices still struggle to simulate complex wind field environments in three-dimensional space, cannot accurately assess the dynamic wind resistance performance of drones, and fail to meet the industry's high-precision, comprehensive testing technology requirements.

[0006] Therefore, how to overcome the shortcomings of the existing technology is the subject of this invention. Summary of the Invention

[0007] The purpose of this invention is to provide a wind-resistant test wind wall system.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] A wind-resistant test wind wall system includes a moving mechanism, a lifting mechanism, a pitching mechanism, and a wind wall at least mounted on the pitching mechanism;

[0010] The moving mechanism includes:

[0011] The base, on which the lifting mechanism is mounted;

[0012] At least two roller groups distributed along a first direction, each roller group including at least one roller movably mounted on the base;

[0013] At least one first driving member, wherein a portion of the roller is drivenly assembled with one of the first driving members to achieve rotation;

[0014] At least two guide rails extending along the first direction, each of the rollers being movably assembled with one of the guide rails;

[0015] The lifting mechanism includes a lifting section capable of vertical reciprocating, and the pitching mechanism is at least mounted on the lifting section;

[0016] The pitch mechanism is used to drive the wind wall to reciprocate along an axis to adjust the wind field. The extension direction of the axis is orthogonal to the vertical direction and is perpendicular to or parallel to the first direction.

[0017] Taking the first driving component as an example, the first driving component can be fixedly assembled on the base without restriction. Some structures in this application require support, which is a conventional setting and should be known by those skilled in the art even if not explicitly stated.

[0018] At least two roller sets work together to move the base, thereby enabling the overall horizontal movement of the wind-resistant test windbreak system. Each roller set comprises multiple rollers, with only a portion of these rollers connected to the first driving component; these are the driving rollers, while the others are driven rollers. The driven rollers have no power source and only serve to bear weight and follow the rotation. The driving rollers power the driven rollers, thus moving the entire windbreak system. Based on this, on the one hand, the number of driving sources can be reduced to lower structural costs; on the other hand, a single power source facilitates control, especially reducing the risk of jamming due to inconsistent speeds when multiple rollers are driven simultaneously.

[0019] The wind wall is mounted on the pitch mechanism and can reciprocate along an axis driven by the pitch mechanism to adjust the wind field. The pitch mechanism is driven by the lifting mechanism (specifically the lifting section) to allow the wind wall to move up and down, and the moving mechanism (specifically the roller assembly) can complete the horizontal movement of the entire wind-resistant test wind wall system. Based on this, firstly, the wind-resistant test wind wall system in this application can adjust the wind direction while providing stable and controllable airflow, and can simulate various wind field conditions encountered by aircraft in real flight, such as crosswinds during constant altitude cruise, headwinds / tailwinds during climb / descent, and wind shear and gusts during flight. Moreover, the adjustment dimensions are diversified, and it can simultaneously change the relative height and position of the wind source and the aircraft. The test scenario coverage is wide, and it can truly reflect the dynamic wind resistance performance of the aircraft in three-dimensional space. Secondly, the wind-resistant test wind wall system in this application realizes repeatable and standardized simulation of complex wind fields, so that the comparison of wind resistance performance of different models and batches of aircraft has a unified benchmark, improving the accuracy and reliability of test data.

[0020] Based on the wind-resistant test windwall system of this application, there is no need to change the test site or wait for specific weather, which shortens the research and development cycle. Moreover, because the test is conducted in a controlled environment, the risk of aircraft crashes that may occur during natural wind field testing is avoided. At the same time, compared with building a large full-size wind tunnel, the wind-resistant test windwall system of this application has a relatively simple structure, reduces construction and operating costs, and is more suitable for aircraft research and development companies, quality inspection agencies, and university laboratories.

[0021] The guide rails prevent the rollers from shifting during movement, ensuring that the entire wind-resistant test windbreak system can only reciprocate along the primary direction. The guide rail fixing is a standard setup and will not be described in detail here.

[0022] In the vertical direction, the middle part of the guide rail can be tapered to form a recess, and the base portion (hereinafter referred to as the protrusion) can be inserted into this recess to achieve a sliding assembly between the roller and the guide rail. It should be noted that the protrusion can also be located within the roller assembly; this is only for illustrative purposes, such as facilitating the explanation of structural support, incorporating some structures into the base, or setting structures to be supported by the base. However, this is not a limiting explanation; the core focus is on the final implementation objective, such as achieving a sliding assembly between the roller and the guide rail.

[0023] For example, the first driving component includes a motor, a coupling, and a transmission rod. The motor outputs power to the transmission rod through the coupling, and the transmission rod is connected to the roller to realize the rotation of the roller.

[0024] In a further technical solution, the roller assembly is configured as two roller assemblies, which are respectively disposed at the bottom ends of the base along the first direction. Each roller assembly includes two rollers arranged side by side along the second direction, which is orthogonal to the first direction and the vertical direction.

[0025] The first driving element is configured as a single unit, and two of the rollers in the roller group are connected to the first driving element for transmission assembly.

[0026] There can be three roller sets, with one set located in the central area at the bottom of the base.

[0027] A plane is set with its normal parallel to the first direction, and the projections of the rollers in different roller groups onto this plane can be staggered.

[0028] Two roller sets are set up, with the two roller sets located at the bottom ends of the base along the first direction. This can optimize the number of roller sets while keeping the wind wall system of the wind resistance test balanced and stable as a whole.

[0029] Two rollers in a roller assembly are driven and assembled with the same first driving component. For example, the first driving component includes a motor and a dual output shaft coupling. The motor is connected to the input end of the dual output shaft coupling, and the two rollers are respectively connected to the two output ends (output shafts) symmetrically arranged on the dual output shaft coupling.

[0030] In this section, only two rollers are used, and only a single first drive component is used, which further reduces structural costs and also reduces the risk of structural failure.

[0031] A further technical solution is that the lifting mechanism includes:

[0032] Second drive unit;

[0033] A lead screw drive structure includes a drive screw and a first drive nut that are connected by a drive screw, wherein the drive screw is connected to a second driving member to realize the reciprocating vertical movement of the first drive nut;

[0034] A support member is spaced out and sleeved on the outside of the transmission screw and installed on the first transmission nut. The support member and the first transmission nut constitute the lifting part. The pitching mechanism is installed on at least the support member.

[0035] The specific structure of the second driving component can be referred to the above description of the first driving component. It only needs to be able to serve as the power source for the lead screw transmission structure to realize the lifting and lowering movement of the first transmission nut. The support for the second driving component can be referred to the above description of the support setting. It can be set on the base or an additional support structure can be added (it can be regarded as being directly installed on the base or indirectly installed on the base through an intermediate connecting structure). It can also be understood with reference to the attached drawings.

[0036] The principle that a lead screw drive structure can convert rotary motion into linear motion is well known and will not be elaborated here.

[0037] The support may include a sleeve that is fitted over the outside of the transmission screw and installed on the first transmission nut. The top surface of the sleeve may serve as a support plane. Alternatively, the support may include a support platform installed on top of the sleeve. The top surface of the support platform serves as a support plane, which effectively supports the pitch mechanism and the wind wall.

[0038] This section clarifies the specific setup of the lifting mechanism, which has a simple and reliable structure and can stably achieve the lifting of the wind wall.

[0039] It should be noted that the wind wall can be rotatably connected to the supporting plane via a pivot. When the pivot belongs to the pitch mechanism, the wind wall is only connected to the pitch mechanism. When the pivot belongs to the lifting mechanism, the wind wall is connected to both the pitch and lifting mechanisms.

[0040] In a further technical solution, the lifting mechanism also includes a guide member, which is sleeved on the support member and remains relatively fixed to the base, that is, the guide member does not move with the support member;

[0041] An elastic element is fitted between the guide member and the support member to improve the stability of the support member during the lifting process.

[0042] The aforementioned sleeve can be understood as the inner tube, and the guide component may include an outer tube (material not limited). The fixed support of the outer tube is a conventional setting, which will not be elaborated here, but can be understood with reference to the attached drawings. An elastic component, such as a rubber block, is provided between the inner and outer tubes. This rubber block can be annular, with its inner surface conforming to the inner tube and its outer surface conforming to the outer tube. Four rubber blocks can also be provided and arranged around the inner tube. Through the cooperation of the elastic component and the guide component, the support component can be guided, so that the wind wall can be stably raised and lowered vertically, and the stability of the raising and lowering process can be ensured to avoid swaying. A protruding structure can be formed on the inner wall of the guide component. The top surface of the protruding structure constitutes a limiting surface to limit the downward movement distance of the sleeve.

[0043] In some embodiments, the inner wall of the guide member has a stepped surface, and the vertical projection of the elastic member coincides with the orthographic projection of the stepped surface. In this case, the stepped surface can serve as the aforementioned limiting surface (referred to as the lower limiting surface), which can limit the downward movement range of the elastic member. Preferably, an upper limiting surface is formed at the top of the inner wall of the guide member to limit the upward movement distance of the sleeve.

[0044] In some embodiments, four lifting mechanisms are provided, and the four lifting mechanisms are distributed in a square array. In this case, the lifting mechanisms can be regarded as being distributed in the four corner areas (or four corner areas) of the base, which can more stably support the pitch mechanism and the wind wall.

[0045] A further technical solution is provided, wherein the pitch mechanism includes:

[0046] Third driving component;

[0047] The first commutator is connected to the third driving member and has two symmetrically arranged first output terminals. The two first output terminals can be driven by the third driving member to rotate synchronously.

[0048] Two second commutators are connected to the two first output terminals in a one-to-one correspondence through a first transmission component, and each has a second output terminal. The two second output terminals can be driven by the two first output terminals to rotate synchronously.

[0049] Two lead screws are connected to the two second output terminals in a one-to-one transmission connection, and the two lead screws can be driven by the two second output terminals to rotate synchronously;

[0050] Two second transmission components are connected to the two lead screws in a one-to-one manner and are used to rotate with the wind wall. The two second transmission components can be driven by the two lead screws to reciprocate along the extension direction of the lead screws and cause the wind wall to reciprocate along an axis.

[0051] This application illustrates the example of a first commutator having two first output terminals symmetrically arranged in a second direction, a wind wall with its rotation axis parallel to the second direction, and a lead screw extending along a first direction, wherein the second direction is orthogonal to the first direction.

[0052] The second transmission component is the structure that actually contacts the wind wall, but the actual driving source is the third driving component. The third driving component can be a drive motor; depending on the control precision requirements, the motor can be a regular AC motor, a servo motor, or a stepper motor, enabling open-loop or closed-loop control. As the sole power source for the pitch mechanism, the third driving component reduces the structural cost of the power source. The support for the third driving component is also unrestricted; the pitch mechanism can have an additional support structure. This section only emphasizes how to achieve the wind wall's rotation.

[0053] During the flipping process, the third driving component inputs force (i.e., power) to the input end of the first commutator (dual output shaft commutator), causing the two first output ends of the first commutator to rotate. The two first output ends input force to the two second commutators through the two first transmission components, causing the two second output ends of the two second commutators to rotate, which in turn drive the two lead screws to rotate. During the rotation of the lead screws, by switching the rotation direction of the lead screws, the second transmission component can reciprocate along the extension direction of the lead screws, causing the wind wall to rotate reciprocally. This is illustrated by the wind wall having a first position and a second position. In the first position, the wind wall is parallel to the horizontal direction; in the second position, the wind wall is parallel to the vertical direction. The second transmission component can rotate the wind wall from the first position to the second position, or vice versa.

[0054] Two secondary transmission components provide thrust to the wind wall synchronously from both sides, making the wind wall more evenly stressed and its movement more stable compared to a single point of action.

[0055] The first transmission component transmits the power corresponding to the first output end to the corresponding second commutator, adapting to the spacing between the first and second commutators. By adjusting the first transmission component, it can be adapted to wind walls of different lengths.

[0056] In summary, the third drive component is the single power source in the pitch mechanism. The cooperation between the third drive component and the dual output shaft commutator (i.e., the first commutator) ensures the synchronization of power output, so that the two second transmission components have consistent displacement and synchronous drive, avoiding twisting and jamming during the wind wall's rotation, and ensuring the stability of wind field simulation and the reliability of test data.

[0057] It should be noted that the structural support is a standard feature. Taking the lead screw as an example, even if not explicitly stated, it should be understood that the lead screw can be equipped with a support structure. For instance, the tail end of the lead screw can be connected to a bearing housing via a thrust ball bearing, and the bearing housing can be fixedly installed on the base. The lead screw is subject to a large axial force, and the thrust ball bearing can transfer the axial force in the lead screw to the entire base, increasing the axial force bearing capacity of the lead screw and thus improving safety.

[0058] In some implementations, the input end of the first commutator is connected to the output end of the third drive unit via a reducer, which can reduce the output speed of the third drive unit and increase the torque proportionally, thereby improving the structural stability.

[0059] In a further technical solution, the first transmission component includes a first coupling, a connecting rod, and a second coupling connected in sequence; the first coupling is connected to the first output end; and the second coupling is connected to the input end of the second commutator.

[0060] The dual-output shaft commutator (i.e., the first commutator) transmits the single rotational motion of the third drive component to the two lead screws synchronously and at the same speed through the first coupling, connecting rod, second coupling, and second commutator, further ensuring the synchronicity of power output. This ensures that the two second transmission components have consistent displacement and are driven synchronously, preventing twisting and jamming of the wind wall during the flipping process.

[0061] By changing the connecting rod, it can be adapted to wind walls of different lengths.

[0062] In some implementations, the lead screw is connected to the corresponding second output end via a third coupling to improve the stability of the lead screw operation and adapt to different speed and torque requirements.

[0063] In a further technical solution, the second transmission component includes a second transmission nut and a transmission part that are rotatably connected; the second transmission nut is connected to the corresponding lead screw; and the transmission part is used to rotatably connect with the wind wall.

[0064] The conversion between rotational and horizontal motion via screw drive is an existing technology, well-known to those skilled in the art, and will not be elaborated upon here. Screw drive enables the second transmission nut and transmission unit to reciprocate along the extension direction of the screw, which in turn causes the wind wall to rotate reciprocally. The transmission unit can be a transmission rod, with the left and right sides of the wind wall connected to one end of the two transmission rods via fisheye bearings. The transmission rod can be a rigid connecting rod or a connecting rod with a spherical bearing to accommodate certain installation errors.

[0065] Screw drives have high precision and self-locking characteristics, enabling precise control of the wind wall's tilting angle and reliable holding at any position.

[0066] Preferably, a wire displacement sensor can be equipped to calculate the rotation angle of the wind wall based on the linear displacement distance of the second transmission nut.

[0067] In a further technical solution, the pitch mechanism also includes two guide components. Each guide component includes a linear guide rail and a slider slidably disposed on the linear guide rail. The two sliders are fixedly connected to the two second transmission nuts in a one-to-one correspondence. The linear guide rail and the lead screw extend in the same direction.

[0068] A linear guide rail is installed parallel to the lead screw. Each second transmission nut is rigidly connected to the slider. All lateral torques and radial forces are borne by the linear guide rail and the slider. The slider is only allowed to move linearly along the extension direction of the linear guide rail (which is also the extension direction of the lead screw), ensuring that the lead screw only bears axial force. This eliminates the rotation and wobble of the second transmission nuts, achieving high linear motion accuracy. In other words, the linear guide rail effectively limits the radial runout of the second transmission nuts, and all non-axial loads are borne by the linear guide rail, protecting the lead screw and improving the rigidity, stability, and service life of the entire system.

[0069] The lead screw and linear guide can be arranged on the side, below or behind the wind wall. The positions of the linear guide and lead screw can also be changed as needed, as long as the direction of movement can be coordinated with the transmission unit.

[0070] It should be noted that the above-mentioned structure actually adopts a double lead screw double-side drive structure. This structure can evenly distribute the load of the wind wall to the two support points. Combined with the linear guide rail, it can drive heavy-duty wind walls and improve load-bearing capacity.

[0071] A further technical solution is that the wind wall includes a support frame, at least one wind turbine module, and at least one control component;

[0072] The support frame is provided with at least one mounting groove, and at least one of the fan modules is provided in the mounting groove.

[0073] The wind turbine module is used to create a wind field and is detachably connected to the support frame via a first connector.

[0074] The number of wind turbine modules and control components are the same; each control component is located on the side of each wind turbine module; each control component is electrically connected to the adjacent wind turbine module to control the wind field; each control component is detachably connected to the support frame or the adjacent wind turbine module.

[0075] Each wind turbine module can be connected to the support frame one-to-one via its respective first connector. The support frame can be installed via the aforementioned pivot. This section only describes the structure of the wind wall; the support for the wind wall can be configured according to actual needs.

[0076] The support frame supports the fan module through the mounting slot. The control components can be supported by either the support frame or the fan module to meet different layout requirements.

[0077] The wind turbine module is protected by a support frame and mounting slots, and its detachable installation from the support frame is achieved via a first connector. The wind turbine module can be removed for maintenance. Each wind turbine module is equipped with a control component, which controls the wind field of that module. This means each module has an independent control component, enabling distributed control. A failure in a single wind turbine module or control component will not affect the operation of the entire system, facilitating troubleshooting and improving system reliability and maintenance efficiency. Furthermore, each control component is located adjacent to each wind turbine module, facilitating wiring for electrical connections and further simplifying troubleshooting. The control components are also detachable for individual maintenance.

[0078] Each fan module is equipped with a control component, which allows for individual control of each fan module. This means that different fan modules can have different wind speeds, thus enabling the wind wall to achieve the requirements of gradual wind.

[0079] The first connector can be a standardized corner piece, bolt, or other connector, which is easy to install and has a stable and reliable structure.

[0080] In summary, the wind wall in this application can reduce downtime and improve testing efficiency.

[0081] It should be noted that the fan module, as a whole structure, is a single and standardized module. The number of modules can be adjusted according to needs. The fan modules can be stacked in the mounting slot. Through this standardized and stackable structural design, the uniformity of the modules is ensured, thereby ensuring the uniformity and consistency of the airflow.

[0082] In some embodiments, the support frame includes a first frame and a plurality of second frames connected to the first frame; the first frame encloses a protective space; each second frame is placed within the protective space and extends in a straight line (described as the second frame extending vertically when the windbreak is vertical); the second frames are evenly spaced (described as arranged along a second direction); two adjacent second frames, together with a portion of the first frame, enclose a mounting groove. The mounting groove is formed by the enclosing of the first frame and the second frames; in this case, the mounting groove can be understood as a square hollow body. Based on this configuration, several mounting grooves can be quickly formed to protect several wind turbine modules, and can also be used with a first connector to fix several wind turbine modules.

[0083] In some embodiments, the mounting tank contains multiple wind turbine modules evenly distributed along a straight line; each control component is detachably connected to an adjacent wind turbine module. It should be noted that, regarding wind field simulation accuracy, traditional wind walls are mostly composed of large-sized wind turbines, which have limited spatial resolution and wind speed adjustment accuracy, making it difficult to meet the testing needs of small civilian drones for fine wind fields. This results in deviations between test data and actual application scenarios, hindering effective support for optimizing product wind resistance performance. In this section, the mounting tank contains multiple (at least two) wind turbine modules. In this case, the wind wall can be considered as including several small-sized wind turbines, improving wind speed adjustment accuracy and making it suitable for the testing needs of small civilian drones for fine wind fields. Connecting the control components to the wind turbine modules rather than to the support frame facilitates the removal of both components, further simplifying troubleshooting and disassembly / repair, and also improving the stability of the wind turbine modules.

[0084] In some implementations, each control component is attached to two adjacent second frames. This can be understood as the wind turbine module being inserted into the mounting slot from the front of the support frame, and the control components being inserted into the mounting slot from the back of the support frame. In this case, each second frame can be considered as a vertical rib forming the support frame. The control components are attached to two adjacent second frames along the second direction, and a row of control components can be considered as horizontal ribs forming the support frame, which can strengthen the rigidity of the entire support frame. These vertical ribs can also act as cable trays for wiring.

[0085] In some embodiments, the support frame is configured as a double-layer aluminum profile frame, with square tubes embedded in the gaps of the frame's border. The basic frame is constructed from double-layer aluminum profiles (existing technology, not innovative). The thickness of the double-layer aluminum profiles can be increased according to wind speed requirements to allow sufficient air intake space. The fan module is installed in the inner layer of the double-layer aluminum profile frame, allowing the fan module to be completely embedded in the basic frame. Embedding square tubes in the gaps of the frame's border (which can be the first frame mentioned above) further increases the rigidity of the basic frame. The support frame adopts an aluminum profile and square tube structure, combining the advantages of aluminum profiles (lightweight and high strength) with the good torsional and bending resistance of square tubes, ensuring overall structural rigidity and stability while significantly reducing weight. It should be noted that, depending on strength, weight, and cost requirements, the support frame can be constructed entirely of high-strength aluminum profiles, or carbon fiber composite materials can be used in key load-bearing areas.

[0086] A further technical solution is that the wind turbine module includes:

[0087] The mounting plate is disposed in the mounting groove and is detachably connected to the support frame through the first connector; the mounting plate has a ring-shaped structure.

[0088] A connecting plate is attached to the inner wall or end face of the mounting plate, and the connecting plate is provided with at least one mounting hole;

[0089] The fan can be detachably mounted on the connecting plate through the mounting holes and electrically connected to the corresponding control components.

[0090] The number of fans can be the same as the number of mounting holes. The type of fan can be selected according to the required wind speed range and noise requirements, such as choosing a brushless DC fan, as long as the relevant interfaces are compatible.

[0091] In some implementations, the wind turbine module integrates environmental sensors (such as temperature, humidity, and air pressure sensors) or airflow detection sensors to provide real-time wind field data and enable more precise closed-loop control.

[0092] The fan is assembled with the connecting plate via mounting holes. The fan is held in place by the mounting plate and the support frame. Fixing holes can be provided on the connecting plate, through which the fan is secured to the connecting plate, such as by a threaded connection.

[0093] The inner side of the mounting plate can be divided into an air intake space and a receiving space, into which the fan can be inserted.

[0094] At least one wire hole may be provided on the end of the mounting plate away from the connecting plate to facilitate electrical connection between the fan and the control components via wires.

[0095] At least one assembly hole may be provided on the end of the mounting plate away from the connecting plate, through which the first connector fixes the mounting plate to the support frame.

[0096] In a further technical solution, the connecting plate is provided with a plurality of mounting holes arranged in an array;

[0097] The mounting plate and the connecting plate together form a mounting structure, which is a centrally symmetrical structure. Therefore, when all fans are identical, the fan module as a whole has a centrally symmetrical structure, which is a preferred configuration.

[0098] For example, nine mounting holes arranged in a square array allow for a centrally symmetrical mounting structure. With nine fans arranged in a square array within the fan module, installing the module into the mounting slot eliminates the need to distinguish the orientation of the fans, simplifying the assembly process and making it suitable for situations with a large number of fan modules. Furthermore, this design facilitates the assembly of the fan module, reducing the time required. It should be noted that fan modules with different specifications, such as 4 fans or 16 fans, can be designed based on the fan size and power.

[0099] In a further technical solution, the mounting plate is a square hollow plate;

[0100] The fan module also includes a fixing plate. Each of the four straight-edge areas of the mounting plate away from the connecting plate is connected to a fixing plate. The four fixing plates are arranged symmetrically in pairs. Two of the symmetrically arranged fixing plates are detachably connected to the support frame through the first connector. At least one of the other two symmetrically arranged fixing plates is detachably connected to the adjacent control component.

[0101] Preferably, the two symmetrical fixing plates in the second direction are detachably connected to the support frame. For example, connecting the two symmetrical fixing plates in the second direction to two second frames can enable the wind turbine module to have higher stability.

[0102] At least one of the other two symmetrically arranged fixing plates is detachably connected to the adjacent control component. For example, multiple fan modules are vertically distributed, and so are multiple control components. Each fan module has a control component located beside its top (avoiding the air intake space). The first fan module is below the second fan module, and is the lowest in a row of fan modules. The first fan module has a corresponding first control component beside its top, and the second fan module has a corresponding second control component beside its top. In this case, for the two vertically symmetrical fixing plates on the first fan module, the upper fixing plate is connected to the first control component; for the two vertically symmetrical fixing plates on the second fan module, the lower fixing plate is connected to the first control component, and the upper fixing plate is connected to the second control component, thus improving the stability of the fan modules and control components. The top row of control components can be attached to the top surface of the support frame.

[0103] In some embodiments, the control component includes a protective element and a control element disposed within the protective element; the protective element is detachably connected to the fan module; and the control element is electrically connected to the fan module.

[0104] There are no restrictions on how the control components are stabilized within the protection components.

[0105] Protective components can be protective shells to prevent damage to control components and to protect them from interference by substances such as water droplets and dust.

[0106] The control components are existing control components (such as circuit boards), which are well known to those skilled in the art and are not the innovation of this application, so they will not be described in detail here.

[0107] The protective components are detachably connected to the wind turbine module, which facilitates the removal of the control components and the wind turbine module together, further simplifying troubleshooting and disassembly for maintenance, and also improving the stability of the wind turbine module.

[0108] The control unit can use a female connector, while the fan module can use a male connector. During installation, insert the male connector of the fan module into the female connector on the control unit, then replace the cover plate in the protective component. Disassembly and replacement are performed in the same manner. A quick-connect interface is used between the control unit and the fan module for easy replacement in case of failure.

[0109] Wireless communication modules (such as Wi-Fi) can be introduced to enable wireless networking and control, further simplifying wiring.

[0110] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0111] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0112] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0113] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing this case.

[0114] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0115] The working principle and advantages of this invention are as follows:

[0116] At least two roller sets work together to move the base, thereby enabling the overall horizontal movement of the wind-resistant test windbreak system. Each roller set comprises multiple rollers, with only a portion of these rollers connected to the first driving component; these are the driving rollers, while the others are driven rollers. The driven rollers have no power source and only serve to bear weight and follow rotation. The driving rollers power the driven rollers, thus moving the entire windbreak system. Based on this, on the one hand, the number of driving sources can be reduced to lower structural costs; on the other hand, a single power source facilitates control, especially reducing the risk of jamming due to inconsistent speeds when multiple rollers are driven simultaneously. The guide rails prevent roller misalignment during movement.

[0117] The wind wall is mounted on the pitch mechanism and can reciprocate along an axis driven by the pitch mechanism to adjust the wind field. The pitch mechanism is driven by the lifting mechanism (specifically the lifting section) to allow the wind wall to move up and down, and the moving mechanism (specifically the roller assembly) can complete the horizontal movement of the entire wind-resistant test wind wall system. Based on this, firstly, the wind-resistant test wind wall system in this application can adjust the wind direction while providing stable and controllable airflow, and can simulate various wind field conditions encountered by aircraft in real flight, such as crosswinds during constant altitude cruise, headwinds / tailwinds during climb / descent, and wind shear and gusts during flight. Moreover, the adjustment dimensions are diversified, and it can simultaneously change the relative height and position of the wind source and the aircraft. The test scenario coverage is wide, and it can truly reflect the dynamic wind resistance performance of the aircraft in three-dimensional space. Secondly, the wind-resistant test wind wall system in this application realizes repeatable and standardized simulation of complex wind fields, so that the comparison of wind resistance performance of different models and batches of aircraft has a unified benchmark, improving the accuracy and reliability of test data.

[0118] Based on the wind-resistant test windwall system of this application, there is no need to change the test site or wait for specific weather, which shortens the research and development cycle. Moreover, because the test is conducted in a controlled environment, the risk of aircraft crashes that may occur during natural wind field testing is avoided. At the same time, compared with building a large full-size wind tunnel, the wind-resistant test windwall system of this application has a relatively simple structure, reduces construction and operating costs, and is more suitable for aircraft research and development companies, quality inspection agencies, and university laboratories.

[0119] This application also includes a pitch mechanism comprising: a third driving member; a first commutator, driven by the third driving member, having two symmetrically arranged first output ends, the two first output ends being driven by the third driving member to rotate synchronously; two second commutators, each corresponding to one of the two first output ends via a first transmission member, each having a second output end, the two second output ends being driven by the two first output ends to rotate synchronously; two lead screws, each corresponding to one of the two second output ends, the two lead screws being driven by the two second output ends to rotate synchronously; and two second transmission members, each corresponding to one of the two lead screws and used for rotatable connection with the wind wall, the two second transmission members being driven by the two lead screws to reciprocate along the extension direction of the lead screws and causing the wind wall to reciprocate along an axis. During the flipping process, the third driving member inputs a force to the input end of the first commutator, causing the two first output ends of the first commutator to rotate. Two first output terminals input force to two second commutators through two first transmission components, causing the two second output terminals of the two second commutators to rotate, which in turn drive two lead screws to rotate. During the rotation of the lead screws, by switching the rotation direction of the lead screws, the second transmission components can reciprocate along the extension direction of the lead screws, causing the wind wall to rotate reciprocally. The two second transmission components provide thrust to the wind wall synchronously from both sides, making the force on the wind wall more uniform and the movement process more stable compared to a single point of action.

[0120] This application also includes a windbreak wall comprising a support frame, at least one wind turbine module, and at least one control component. The support frame has at least one mounting slot, and at least one wind turbine module is mounted within the mounting slot. The wind turbine module is used to generate a wind field and is detachably connected to the support frame via a first connector. The number of wind turbine modules and control components is the same. Each control component is correspondingly located beside each wind turbine module. Each control component is electrically connected to an adjacent wind turbine module to control the wind field. Each control component is detachably connected to the support frame or an adjacent wind turbine module. The wind turbine module is protected by the support frame through the mounting slot, and the first connector enables detachable installation of the wind turbine module from the support frame. The wind turbine module can be removed for maintenance. Each wind turbine module is equipped with a control component, which controls the wind field of that module. Each wind turbine module has an independent control component, achieving distributed control. Failure of a single wind turbine module or control component will not affect the operation of the entire system, facilitating troubleshooting and improving system reliability and maintenance efficiency. In addition, each control component is located next to each fan module, facilitating wiring for electrical connection and further simplifying troubleshooting. Each fan module is equipped with a control component, allowing for individual control of each module. This means that different fan modules can operate at different speeds, thus achieving the required gradual airflow in the wind wall.

[0121] The above settings can work together to achieve the goal of providing a comprehensive, adaptable, and long-term stable wind field. Attached Figure Description

[0122] Appendix Figure 1 This is a schematic diagram of the overall structure of the wind wall system for wind resistance testing according to an embodiment of the present invention;

[0123] Appendix Figure 2 This is one of the partial structural schematic diagrams of the wind wall system for wind resistance testing according to an embodiment of the present invention;

[0124] Appendix Figure 3 For the appendix Figure 2 A structural diagram from another perspective;

[0125] Appendix Figure 4 For the appendix Figure 2 Another structural diagram from a different perspective;

[0126] Appendix Figure 5 For the appendix Figure 4 A sectional view of a local structure in the middle;

[0127] Appendix Figure 6 This is a schematic diagram of the windbreak wall from one perspective according to an embodiment of the present invention;

[0128] Appendix Figure 7 For the appendix Figure 6 Enlarged view of a portion of point A in the middle;

[0129] Appendix Figure 8 This is a structural schematic diagram of the windbreak wall from another perspective according to an embodiment of the present invention;

[0130] Appendix Figure 9 For the appendix Figure 8 Enlarged view at point B in the middle;

[0131] Appendix Figure 10 This is a schematic diagram of the support frame structure according to an embodiment of the present invention;

[0132] Appendix Figure 11 This is a schematic diagram showing the positions of the fan module and control components according to an embodiment of the present invention;

[0133] Appendix Figure 12 This is a schematic diagram of the wind turbine module from one perspective according to an embodiment of the present invention;

[0134] Appendix Figure 13 This is a schematic diagram of the wind turbine module from another perspective according to an embodiment of the present invention;

[0135] Appendix Figure 14 This is a schematic diagram showing the positions of the mounting plate and the connecting plate in an embodiment of the present invention;

[0136] Appendix Figure 15 This is a schematic diagram of the overall structure of the control component according to an embodiment of the present invention;

[0137] Appendix Figure 16 This is a partial structural diagram of the control component according to an embodiment of the present invention;

[0138] Appendix Figure 17 This is a second partial structural schematic diagram of the wind wall system for wind resistance testing according to an embodiment of the present invention;

[0139] Appendix Figure 18 This is a partial structural schematic diagram of the pitch mechanism according to an embodiment of the present invention;

[0140] Appendix Figure 19 For the appendix Figure 18 A structural diagram from another perspective.

[0141] In the attached diagrams above:

[0142] 1. Moving mechanism; 11. Base; 111. Protrusion; 12. Roller; 13. First driving component; 14. Guide rail; 141. Recess;

[0143] 2. Lifting mechanism; 21. Second driving component; 22. Transmission screw; 23. First transmission nut; 24. Support component; 25. Guide component; 251. Step surface; 26. Elastic component;

[0144] 3. Pitch mechanism; 31. Third drive component; 32. First commutator; 321. First output end; 33. Second commutator; 34. First transmission component; 341. First coupling; 342. Connecting rod; 343. Second coupling; 35. Lead screw; 36. Second transmission nut; 37. Transmission part; 38. Linear guide rail; 39. Slider;

[0145] 4. Windbreak wall; 41. Support frame; 411. Mounting slot; 412. First frame; 413. Second frame;

[0146] 42. Fan module; 421. Mounting plate; 422. Connecting plate; 423. Mounting hole; 424. Fan; 425. Air inlet space; 426. Fixing plate;

[0147] 43. Control components; 431. Protective components; 432. Control components. Detailed Implementation

[0148] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0149] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0150] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0151] See appendix Figure 1 -Appendix Figure 19 A wind-resistant test wind wall system includes a moving mechanism 1, a lifting mechanism 2, a pitching mechanism 3, and a wind wall 4 at least installed on the pitching mechanism 3;

[0152] The moving mechanism 1 includes:

[0153] Base 11, the lifting mechanism 2 is installed on the base 11;

[0154] At least two roller groups distributed along a first direction, each roller group including at least one roller 12 movably mounted on the base 11;

[0155] At least one first drive element 13, and a portion of the roller 12 is drivenly assembled with one of the first drive elements 13 to achieve rotation;

[0156] The lifting mechanism 2 includes a lifting section capable of vertical reciprocating movement, and the pitch mechanism 3 is at least mounted on the lifting section;

[0157] The pitch mechanism 3 serves as a mechanism for driving the wind wall 4 to reciprocate along an axis to adjust the wind field. The extension direction of this axis is orthogonal to the vertical direction, and the extension direction of this axis is perpendicular to or parallel to the first direction.

[0158] The first direction is parallel to the X direction in the attached figure, and the second direction described below is parallel to the Y direction in the attached figure.

[0159] This embodiment uses a wind-resistant test windwall system for UAV testing as an example, but it is not limited to this.

[0160] Taking the first driving component 13 as an example, the first driving component 13 can be fixedly assembled on the base 11 but is not restricted. Some structures in this embodiment need to be supported, which is a conventional setting and should be known by those skilled in the art even if not explicitly stated.

[0161] At least two roller sets work together to move the base 11, thereby enabling the overall horizontal movement of the wind-resistant test windbreak system. Each roller set includes multiple rollers 12, only some of which are driven by the first drive component 13. These driven rollers are the driving rollers, while the others are driven rollers. The driven rollers have no power source and only serve to bear weight and follow the rotation. The driving rollers power the driven rollers, thus moving the entire windbreak system. Based on this, on the one hand, the structural cost can be reduced by decreasing the number of drive sources; on the other hand, a single power source facilitates control, especially reducing the risk of collisions caused by inconsistent speeds when multiple rollers are driven simultaneously.

[0162] The wind wall 4 is mounted on the pitch mechanism 3 and can reciprocate along an axis driven by the pitch mechanism 3 to adjust the wind field. The pitch mechanism 3 is driven by the lifting mechanism 2 (specifically the lifting unit) to enable the wind wall 4 to move up and down. The moving mechanism 1 (specifically the roller assembly) can complete the horizontal movement of the entire wind-resistant test wind wall system. Based on this, firstly, the wind-resistant test wind wall system in this embodiment can adjust the wind direction while providing stable and controllable airflow, and can simulate various wind field conditions encountered by the aircraft in real flight, such as crosswinds during constant altitude cruise, headwinds / tailwinds during climb / descent, and wind shear and gusts during flight. Moreover, the adjustment dimensions are diversified, and it can simultaneously change the relative height and position of the wind source and the aircraft. The test scenario coverage is wide, and it can truly reflect the dynamic wind resistance performance of the aircraft in three-dimensional space. Secondly, the wind-resistant test wind wall system in this embodiment realizes repeatable and standardized simulation of complex wind fields, so that the comparison of wind resistance performance of different models and batches of aircraft has a unified benchmark, improving the accuracy and reliability of test data.

[0163] Based on the wind-resistant test windwall system in this embodiment, there is no need to change the test site or wait for specific weather conditions, which shortens the research and development cycle. Moreover, because the test is conducted in a controlled environment, the risk of aircraft crashes that may occur during natural wind field testing is avoided. At the same time, compared with building a large full-size wind tunnel, the wind-resistant test windwall system in this embodiment has a relatively simple structure, reduces construction and operating costs, and is more suitable for aircraft research and development companies, quality inspection agencies, and university laboratories.

[0164] For example, the first driving component 13 includes a motor, a coupling and a transmission rod. The motor outputs power to the transmission rod through the coupling. The transmission rod is connected to the roller 12 to realize the rotation of the roller 12.

[0165] In this embodiment, the roller assembly is configured as two roller assemblies, which are respectively disposed at the bottom ends of the base 11 along the first direction. Each roller assembly includes two rollers 12 arranged side by side along the second direction, which is orthogonal to the first direction and the vertical direction.

[0166] The first driving member 13 is configured as a single unit, and the two rollers 12 in the roller group are connected to the first driving member 13 for transmission.

[0167] There can be three roller sets, one of which is located in the middle area of ​​the bottom of the base 11.

[0168] A plane is set with its normal parallel to the first direction, and the projections of rollers 12 in different roller groups onto this plane can be staggered.

[0169] Two roller sets are provided, with the two roller sets located at the bottom ends of the base 11 along the first direction. This can optimize the number of roller sets while keeping the wind-resistant test wind wall system as a whole balanced and stable.

[0170] Two rollers 12 in a roller assembly are driven and assembled with the same first drive unit 13. For example, the first drive unit 13 includes a motor and a dual output shaft coupling. The motor is connected to the input end of the dual output shaft coupling, and the two rollers 12 are respectively connected to the two output ends (output shafts) symmetrically arranged on the dual output shaft coupling.

[0171] In this section, only two rollers are provided, and the first drive component 13 is only a single one, which further reduces structural costs and also reduces the risk of structural failure.

[0172] In this embodiment, the moving mechanism 1 further includes at least two guide rails 14 extending along the first direction, and each roller 12 is movably assembled with one of the guide rails 14. The guide rails 14 prevent the rollers 12 from shifting during movement, ensuring that the entire wind-resistant test windwall system can only reciprocate along the first direction. The fixing of the guide rails 14 is a conventional arrangement and will not be described in detail here.

[0173] In the vertical direction, the middle part of the guide rail 14 can be retracted to form a recess 141, and a portion of the base 11 (hereinafter referred to as the protrusion 111) can be inserted into the recess 141 to achieve a sliding assembly between the roller 12 and the guide rail 14. It should be noted that the protrusion 111 can also be provided within the roller assembly; this is only for illustrative purposes, such as to facilitate explanations of structural support, by incorporating some structures into the base 11 or setting structures to be supported by the base 11. However, this is not a limiting explanation; the core focus is on the final implementation objective, such as achieving a sliding assembly between the roller 12 and the guide rail 14.

[0174] In this embodiment, the lifting mechanism 2 includes:

[0175] Second drive component 21;

[0176] The lead screw drive structure includes a lead screw 22 and a first drive nut 23 that are connected by transmission. The lead screw 22 is connected to the second drive member 21 to realize the reciprocating vertical movement of the first drive nut 23.

[0177] Support member 24 is spaced out and sleeved on the outside of the transmission screw 22 and installed on the first transmission nut 23. The support member 24 and the first transmission nut 23 constitute the lifting part. The pitching mechanism 3 is at least installed on the support member 24.

[0178] The specific structure of the second driving component 21 can be referred to the above description of the first driving component 13. It only needs to be able to serve as the power source of the screw drive structure to realize the lifting and lowering movement of the first transmission nut 23. The support of the second driving component 21 can be referred to the above description of the support setting. It can be set on the base 11 or an additional support structure can be added (it can be regarded as being directly installed on the base 11 or indirectly installed on the base 11 through an intermediate connection structure). It can also be understood with reference to the attached drawings.

[0179] The principle that a lead screw drive structure can convert rotary motion into linear motion is well known and will not be elaborated here.

[0180] The support member 24 may include a sleeve that is fitted over the outside of the transmission screw 22 and installed on the first transmission nut 23. The top surface of the sleeve may serve as a support plane. Alternatively, the support member 24 may also include a support platform that is installed on the top of the sleeve. The top surface of the support platform serves as a support plane, which effectively supports the pitch mechanism 3 and the wind wall 4.

[0181] This section clarifies the specific setup of the lifting mechanism 2, which has a simple and reliable structure and can stably achieve the lifting of the wind wall 4.

[0182] It should be noted that the wind wall 4 can be rotatably connected to the supporting plane via a pivot. When the pivot belongs to the pitch mechanism 3, the wind wall 4 is only connected to the pitch mechanism 3. When the pivot belongs to the lifting mechanism 2, the wind wall 4 is connected to both the pitch mechanism 3 and the lifting mechanism 2.

[0183] In this embodiment, the lifting mechanism 2 further includes a guide member 25, which is sleeved on the support member 24. The guide member 25 is relatively fixed to the base 11, that is, the guide member 25 does not move with the support member 24.

[0184] An elastic element 26 is provided between the guide member 25 and the support member 24 to improve the stability of the support member 24 during the lifting process.

[0185] The aforementioned sleeve can be understood as the inner tube. The guide member 25 may include an outer tube (material is not limited). The fixed support of the outer tube is a conventional setting, which will not be described in detail here, but can be understood with reference to the attached drawings. An elastic member 26, such as a rubber block, is provided between the inner tube and the outer tube. The rubber block can be annular, with its inner surface conforming to the inner tube and its outer surface conforming to the outer tube. Four rubber blocks can also be provided and arranged around the inner tube. Through the cooperation of the elastic member 26 and the guide member 25, the support member 24 can be guided, so that the wind wall 4 can be stably raised and lowered vertically, and the stability of the raising and lowering process can be ensured to avoid swaying. A protruding structure can be formed on the inner wall of the guide member 25. The top surface of the protruding structure constitutes a limiting surface to limit the downward movement distance of the sleeve.

[0186] In some embodiments, the inner wall of the guide member 25 has a stepped surface 251, and the elastic member 26 coincides with the vertical projection of the stepped surface 251. In this case, the stepped surface 251 can serve as the aforementioned limiting surface (referred to as the lower limiting surface), which can limit the downward movement range of the elastic member 26. Preferably, an upper limiting surface is formed at the top of the inner wall of the guide member 25 to limit the upward movement distance of the sleeve.

[0187] In some embodiments, four lifting mechanisms 2 are provided, and the four lifting mechanisms 2 are distributed in a square array. In this case, the lifting mechanisms 2 can be regarded as distributed in the four corner areas (or four corner areas) of the base 11, which can more stably support the pitch mechanism 3 and the wind wall 4.

[0188] In this embodiment, the pitch mechanism 3 includes:

[0189] Third drive component 31;

[0190] The first commutator 32 is connected to the third driving member 31 and has two symmetrically arranged first output terminals 321. The two first output terminals 321 can be driven by the third driving member 31 to rotate synchronously.

[0191] Two second commutators 33 are connected to the two first output terminals 321 one-to-one through a first transmission member 34, and each has a second output terminal. The two second output terminals can be driven by the two first output terminals 321 to rotate synchronously.

[0192] Two lead screws 35 are connected to the two second output terminals in a one-to-one transmission connection, and the two lead screws 35 can be driven by the two second output terminals to rotate synchronously.

[0193] Two second transmission components are connected to the two lead screws 35 in a one-to-one transmission connection and are used to rotate with the wind wall 4. The two second transmission components can be driven by the two lead screws 35 to reciprocate along the extension direction of the lead screws 35 and cause the wind wall 4 to reciprocate along an axis.

[0194] This embodiment is illustrated by the example of a first commutator 32 having two first output terminals 321 symmetrically arranged in a second direction, a wind wall 4 having a rotation axis parallel to the second direction, and a lead screw 35 extending along a first direction. The second direction is orthogonal to the first direction.

[0195] The second transmission component is the structure that actually contacts the wind wall 4, but the actual driving source is the third driving component 31. The third driving component 31 can be a drive motor. Depending on the control accuracy requirements, the motor can be a general AC motor, a servo motor, or a stepper motor, and can achieve open-loop control or closed-loop control. The third driving component 31 serves as the sole power source for the pitch mechanism 3, reducing the structural cost of the power source. The support for the third driving component 31 is also not restricted; the pitch mechanism 3 can have an additional support structure. This section only emphasizes how to achieve the rotation of the wind wall 4.

[0196] During the flipping process, the third driving member 31 inputs force (i.e., power) to the input end of the first commutator 32 (dual output shaft commutator), causing the two first output ends 321 of the first commutator 32 to rotate. The two first output ends 321 input force to the two second commutators 33 through the two first transmission members 34, causing the two second output ends of the two second commutators 33 to rotate, which in turn drive the two lead screws 35 to rotate. During the rotation of the lead screws 35, by switching the rotation direction of the lead screws 35, the second transmission members can reciprocate along the extension direction of the lead screws 35, causing the wind wall 4 to rotate reciprocally. Here, we will describe the wind wall 4 with a first position and a second position. In the first position, the wind wall 4 is parallel to the horizontal direction; in the second position, the wind wall 4 is parallel to the vertical direction. The second transmission members can rotate the wind wall 4 from the first position to the second position, and also rotate the wind wall 4 from the second position to the first position.

[0197] The two second transmission components provide thrust to the wind wall 4 synchronously from both sides, making the force on the wind wall 4 more uniform and the motion process more stable compared to a single point of action.

[0198] The first transmission component 34 transmits the power corresponding to the first output end 321 to the corresponding second commutator 33, adapting to the spacing between the first commutator 32 and the second commutator 33. By adjusting the first transmission component 34, it can be adapted to wind walls 4 with different length specifications.

[0199] In summary, the third drive component 31 is the single power source in the pitch mechanism 3. The cooperation between the third drive component 31 and the dual output shaft commutator (i.e., the first commutator 32) ensures the synchronization of power output, so that the two second transmission components have consistent displacement and synchronous drive, avoiding the twisting and jamming of the wind wall 4 during the flipping process, and ensuring the stability of wind field simulation and the reliability of test data.

[0200] It should be noted that the structural support is a conventional design. Taking the lead screw 35 as an example, even if not explicitly stated, it should be understood that the lead screw 35 can be equipped with a support structure. For instance, the tail end of the lead screw 35 can be connected to a bearing housing via a thrust ball bearing, and the bearing housing can be fixedly installed on the base 11. The lead screw 35 will be subjected to a large axial force. The thrust ball bearing can transfer the axial force in the lead screw 35 to the entire base 11, increasing the axial force bearing capacity of the lead screw 35 and thus improving safety.

[0201] In some embodiments, the input end of the first commutator 32 is connected to the output end of the third drive unit 31 via a reducer, which can reduce the output speed of the third drive unit 31 and increase the torque proportionally, thereby improving the structural stability.

[0202] In this embodiment, the first transmission component 34 includes a first coupling 341, a connecting rod 342, and a second coupling 343 connected in sequence; the first coupling 341 is connected to the first output end 321; and the second coupling 343 is connected to the input end of the second commutator 33.

[0203] The dual-output shaft commutator (i.e., the first commutator 32) transmits the single rotational motion of the third drive member 31 synchronously and at the same speed to the two lead screws 35 through the first coupling 341, connecting rod 342, second coupling 343 and second commutator 33, further ensuring the synchronicity of power output, so that the two second transmission members have consistent displacement and synchronous drive, avoiding the twisting and jamming of the wind wall 4 during the flipping process.

[0204] By replacing the connecting rod 342, it can be adapted to wind walls 4 with different length specifications.

[0205] In some embodiments, the lead screw 35 is connected to the corresponding second output end via a third coupling to improve the operational stability of the lead screw 35 and adapt to different speed and torque requirements.

[0206] In this embodiment, the second transmission component includes a second transmission nut 36 and a transmission part 37 that are rotatably connected; the second transmission nut 36 is rotatably connected to the corresponding lead screw 35; the transmission part 37 is used to rotatably connect with the wind wall 4.

[0207] The conversion between rotational and horizontal motion is achieved through the transmission of the lead screw 35, which is existing and well-known to those skilled in the art, and will not be described in detail here. The second transmission nut 36 and the transmission part 37 reciprocate along the extension direction of the lead screw 35 through the transmission of the lead screw 35, and the transmission part 37 causes the wind wall 4 to rotate reciprocally. The transmission part 37 can be a transmission rod, and the left and right sides of the wind wall 4 are connected to one end of the two transmission rods through fisheye bearings. The transmission rod can be a rigid connecting rod 342 or a connecting rod 342 with a spherical bearing to accommodate certain installation errors.

[0208] The lead screw 35 transmission has high precision and self-locking characteristics, which can achieve precise control of the flip angle of the wind wall 4 and reliable holding of any position.

[0209] Preferably, a wire displacement sensor can be equipped to calculate the rotation angle of the wind wall 4 based on the linear displacement distance of the second transmission nut 36.

[0210] In this embodiment, the pitch mechanism 3 further includes two guide components. The guide components include a linear guide rail 38 and a slider 39 slidably disposed on the linear guide rail 38. The two sliders 39 are fixedly connected to the two second transmission nuts 36 in a one-to-one correspondence. The linear guide rail 38 and the lead screw 35 extend in the same direction.

[0211] A linear guide rail 38 is arranged parallel to the lead screw 35 below it. Each second transmission nut 36 is rigidly connected to a slider 39. All lateral torques and radial forces are borne by the linear guide rail 38 and the slider 39. The slider 39 is only allowed to move linearly along the extension direction of the linear guide rail 38 (which is also the extension direction of the lead screw 35), ensuring that the lead screw 35 only bears axial forces. This eliminates the rotation and wobble of the second transmission nut 36, achieving high linear motion accuracy. In other words, the linear guide rail 38 effectively limits the radial runout of the second transmission nut 36, and all non-axial loads are borne by the linear guide rail 38, protecting the lead screw 35 and improving the rigidity, stability, and service life of the entire system.

[0212] The lead screw 35 and linear guide rail 38 can be arranged on the side, below, or behind the wind wall 4. The positions of the linear guide rail 38 and the lead screw 35 can also be changed as needed, as long as the direction of movement can be coordinated with the transmission part 37. The linear guide rail 38 can be mounted on the base 11.

[0213] It should be noted that the above-mentioned structure actually adopts a double lead screw double-side drive structure. This structure can evenly distribute the load of the wind wall 4 to the two support points. Combined with the linear guide rail 38, it can drive the heavy wind wall 4 and improve the load-bearing capacity.

[0214] In this embodiment, the wind wall 4 includes a support frame 41, at least one wind turbine module 42, and at least one control component 43;

[0215] The support frame 41 is provided with at least one mounting groove 411, and at least one of the fan modules 42 is provided in the mounting groove 411;

[0216] The wind turbine module 42 is used to create a wind field and is detachably connected to the support frame 41 via a first connector.

[0217] The number of wind turbine modules 42 and control components 43 are the same; each control component 43 is disposed on the side of each wind turbine module 42 in a one-to-one correspondence; each control component 43 is electrically connected to the adjacent wind turbine module 42 to control the wind field; each control component 43 is detachably connected to the support frame 41 or the adjacent wind turbine module 42.

[0218] Each wind turbine module 42 can be connected to the support frame 41 one-to-one via the first connector. The support frame 41 can be installed via the aforementioned pivot. This section only describes the structure of the wind wall 4; the support of the wind wall 4 can be configured according to actual needs.

[0219] The support frame 41 supports the fan module 42 through the mounting groove 411. The control component 43 can be supported by either the support frame 41 or the fan module 42 to meet different layout requirements.

[0220] The wind turbine module 42 is protected by the support frame 41 through the mounting groove 411, and the wind turbine module 42 is detachably installed from the support frame 41 by means of the first connector. The wind turbine module 42 can be removed for maintenance. Each wind turbine module 42 is equipped with a control component 43, which controls the wind field of that module. Each wind turbine module 42 has an independent control component 43, achieving distributed control. A failure of a single wind turbine module 42 or control component 43 will not affect the operation of the entire system, facilitating troubleshooting and improving system reliability and maintenance efficiency. Furthermore, each control component 43 is located one-to-one beside each wind turbine module 42, facilitating wiring for electrical connection and further simplifying troubleshooting. The control components 43 are also detachable, allowing for individual maintenance.

[0221] Each fan module 42 is equipped with a control component 43, which can control each fan module 42 individually. That is, the wind speed of different fan modules 42 can be different, so that the wind wall 4 can meet the requirements of gradual wind.

[0222] The first connector can be a standardized corner piece, bolt, or other connector, which is easy to install and has a stable and reliable structure.

[0223] In summary, the wind wall 4 in this embodiment can reduce downtime and improve testing efficiency.

[0224] It should be noted that the fan module 42 is a single and standardized module as an integral structure. The number of modules can be adjusted according to the needs. The fan modules 42 can be stacked in the mounting slot 411. Through this standardized and stackable structural design, the uniformity of the modules is ensured, thereby ensuring the uniformity and consistency of the airflow.

[0225] In some embodiments, the support frame 41 includes a first frame 412 and a plurality of second frames 413 connected to the first frame 412; the first frame 412 encloses a protective space; each second frame 413 is built into the protective space and extends in a straight line (described as the second frame 413 extending vertically when the wind wall 4 is vertical); each second frame 413 is evenly spaced (described as arranged along a second direction); two adjacent second frames 413 cooperate with a portion of the first frame 412 to enclose a mounting groove 411. The mounting groove 411 is formed by the first frame 412 and the second frames 413, and in this case, the mounting groove 411 can be understood as a square hollow body. Based on this configuration, several mounting grooves 411 can be quickly formed to protect several wind turbine modules 42, and can also be used with the first connector to fix several wind turbine modules 42.

[0226] In some embodiments, the mounting slot 411 contains multiple wind turbine modules 42 evenly distributed along a straight line; each control component 43 is detachably connected to an adjacent wind turbine module 42. It should be noted that, in terms of wind field simulation accuracy, traditional wind walls 4 are mostly composed of large-sized wind turbines 424, which have limited spatial resolution and wind speed adjustment accuracy, making it difficult to meet the testing requirements of small civilian drones for fine wind fields. This results in deviations between test data and actual application scenarios, making it difficult to effectively support the optimization of product wind resistance performance. In this section, the mounting slot 411 contains multiple (at least two) wind turbine modules 42. In this case, the wind wall 4 can be considered as including several small-sized wind turbines 424, improving wind speed adjustment accuracy and making it suitable for the testing requirements of small civilian drones for fine wind fields. The control component 43 is connected to the wind turbine module 42 but not to the support frame 41, which facilitates the removal of the control component 43 and the wind turbine module 42 together, further simplifying troubleshooting and disassembly / repair, and also improving the stability of the wind turbine module 42.

[0227] In some embodiments, each control component 43 is respectively attached to two adjacent second frames 413. This can be understood as the fan module 42 being inserted into the mounting slot 411 from the front of the support frame 41, and the control components 43 being inserted into the mounting slot 411 from the back of the support frame 41. In this case, each second frame 413 can be considered as a vertical rib forming the support frame 41. The control components 43 are attached to two adjacent second frames 413 along the second direction, and a row of control components 43 can be considered as horizontal ribs forming the support frame 41, which can strengthen the rigidity of the entire support frame 41. These vertical ribs can also act as cable trays for wiring.

[0228] In some embodiments, the support frame 41 is configured as a double-layer aluminum profile frame, with square tubes embedded in the gaps of the frame's border. The basic frame is constructed from double-layer aluminum profiles (existing technology, not innovative). The thickness of the double-layer aluminum profiles can be increased according to wind speed requirements to reserve sufficient air intake space 425. The fan module 42 is installed in the inner layer of the double-layer aluminum profile frame, allowing it to be completely embedded in the basic frame. Embedding square tubes in the gaps of the frame's border (which can be the aforementioned first frame 412) further increases the rigidity of the basic frame. The support frame 41 adopts an aluminum profile and square tube structure, combining the advantages of lightweight and high strength of aluminum profiles with the good torsional and bending resistance of square tubes, ensuring overall structural rigidity and stability while significantly reducing weight. It should be noted that, depending on strength, weight, and cost requirements, the support frame 41 can be constructed entirely of high-strength aluminum profiles, or carbon fiber composite materials can be used in key load-bearing areas.

[0229] In this embodiment, the wind turbine module 42 includes:

[0230] Mounting plate 421 is disposed in the mounting groove 411 and detachably connected to the support frame 41 via the first connector; the mounting plate 421 has a ring-shaped structure.

[0231] A connecting plate 422 is connected to the inner wall or end face of the mounting plate 421, and the connecting plate 422 is provided with at least one mounting hole 423;

[0232] The fan 424 is detachably mounted on the connecting plate 422 through the mounting hole 423 and electrically connected to the corresponding control component 43.

[0233] The number of fans 424 can be the same as the number of mounting holes 423. The type of fan 424 can be selected according to the required wind speed range and noise requirements, such as selecting a brushless DC fan 424, as long as the relevant interfaces are compatible.

[0234] In some embodiments, the fan module 42 integrates environmental sensors (such as temperature, humidity, and air pressure sensors) or airflow detection sensors to provide real-time wind field data and achieve more precise closed-loop control.

[0235] The fan 424 is assembled with the connecting plate 422 through the mounting hole 423. The fan 424 is fixed to the support frame 41 by means of the mounting plate 421. The connecting plate 422 can be provided with fixing holes, through which the fan 424 is fixed to the connecting plate 422, such as by threaded connection.

[0236] The inner side of the mounting plate 421 can be divided into an air inlet space 425 and a receiving space, into which the fan 424 can be inserted.

[0237] At least one wire hole may be provided on the end of the mounting plate 421 away from the connecting plate 422 to facilitate the electrical connection between the fan 424 and the control component 43 via wires.

[0238] At least one assembly hole may be provided on the end of the mounting plate 421 away from the connecting plate 422, through which the first connector fixes the mounting plate 421 to the support frame 41.

[0239] In this embodiment, the connecting plate 422 is provided with a plurality of mounting holes 423 arranged in an array;

[0240] The mounting plate 421 and the connecting plate 422 form a mounting structure, which is a centrally symmetrical structure. Therefore, when all fans 424 are identical, the fan module 42 as a whole has a centrally symmetrical structure, which is a preferred configuration.

[0241] For example, having nine mounting holes 423 arranged in a square array allows for a centrally symmetrical mounting structure. The fan module 42 contains nine fans 424 arranged in a square array. When installing the fan module 42 into the mounting slot 411, it is not necessary to distinguish the orientation of the fan module 42, simplifying the assembly process and making it suitable for situations with a large number of fan modules 42. Furthermore, this arrangement facilitates the assembly of the fan module 42, reducing the time required for the process. It should be noted that fan modules 42 with different specifications, such as 4 fans or 16 fans, can be designed according to the size and power of the fans 424.

[0242] In this embodiment, the mounting plate 421 is a square hollow plate;

[0243] The fan module 42 also includes a fixing plate 426. Each of the four straight edge areas of the mounting plate 421 away from the connecting plate 422 is connected to a fixing plate 426. The four fixing plates 426 are arranged symmetrically in pairs. Two of the symmetrically arranged fixing plates 426 are detachably connected to the support frame 41 through the first connector. At least one of the other two symmetrically arranged fixing plates 426 is detachably connected to the adjacent control component 43.

[0244] Preferably, the two symmetrical fixing plates 426 in the second direction are detachably connected to the support frame 41. For example, connecting the two symmetrical fixing plates 426 in the second direction to the two second frames 413 can make the wind turbine module 42 have higher stability.

[0245] At least one of the other two symmetrically arranged fixing plates 426 is detachably connected to the adjacent control component 43. For example, multiple fan modules 42 are vertically distributed, and multiple control components 43 are also vertically distributed. Each fan module 42 has a control component 43 located beside its top (avoiding the air inlet space 425). The first fan module is located below the second fan module, and is the lowest in a row of fan modules. The first fan module has a corresponding first control component beside its top, and the second fan module has a corresponding second control component beside its top. In this case, for the two symmetrically arranged fixing plates 426 along the upper vertical axis of the first fan module, the upper fixing plate 426 is connected to the first control component; for the two symmetrically arranged fixing plates 426 along the upper vertical axis of the second fan module, the lower fixing plate 426 is connected to the first control component, and the upper fixing plate 426 is connected to the second control component. This allows for greater stability between the fan modules 42 and the control components 43. For the top row of control components 43, these control components 43 can be attached to the top surface of the support frame 41.

[0246] In some embodiments, the control component 43 includes a protective element 431 and a control element 432 disposed within the protective element 431; the protective element 431 is detachably connected to the fan module 42; and the control element 432 is electrically connected to the fan module 42.

[0247] There are no restrictions on how the control component 432 is stabilized within the protection component 431.

[0248] The protective element 431 can be a protective shell to prevent damage to the control element 432, and to protect the control element 432 from interference from substances such as water droplets and dust.

[0249] The control component 432 is an existing control component (such as a circuit board), which is well known to those skilled in the art and is not an innovation of this embodiment, so it will not be described in detail here.

[0250] The protective component 431 is detachably connected to the wind turbine module 42, which facilitates the removal of the control component 43 and the wind turbine module 42 together, further facilitating troubleshooting and disassembly and maintenance, and also improving the stability of the wind turbine module 42.

[0251] The control unit 432 can use a female connector, and the fan module 42 can use a male connector. During installation, insert the male connector of the fan module 42 into the female connector on the control unit 432, and then cover it with the cover plate in the protective component 431. The same procedure applies to disassembly and replacement. The control unit 432 and the fan module 42 use a quick-connect interface for easy replacement in case of failure.

[0252] Wireless communication modules (such as Wi-Fi) can be introduced to enable wireless networking and control, further simplifying wiring.

[0253] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A wind-wall system for wind-tunnel testing, characterized by: The device comprises a moving mechanism (1), a lifting mechanism (2), a tilting mechanism (3) and a wind wall (4) mounted on the tilting mechanism (3); The moving mechanism (1) comprises: a base (11) on which the lifting mechanism (2) is mounted; at least two roller groups distributed along a first direction, each roller group comprising at least one roller (12) movably mounted on the base (11); at least one first driving member (13), part of the rollers (12) being drivingly mounted with a first driving member (13) to rotate; at least two guide rails (14) extending along the first direction, each roller (12) being movably mounted with a guide rail (14); The lifting mechanism (2) comprises a lifting part capable of moving vertically reciprocally, and the tilting mechanism (3) is mounted on the lifting part; The tilting mechanism (3) is a mechanism for driving the wind wall (4) to rotate reciprocally along an axis to adjust the wind field, the extending direction of the axis is orthogonal to the vertical direction, and the extending direction of the axis is perpendicular to or parallel to the first direction.

2. A wind resistant test wall system according to claim 1, wherein: The roller groups are provided in two, and the two roller groups are arranged at the two ends of the bottom of the base (11) along the first direction, each roller group comprising two rollers (12) arranged side by side along a second direction, the second direction being orthogonal to the first direction and the vertical direction; The first driving member (13) is provided in one, and the two rollers (12) in a roller group are drivingly mounted with the first driving member (13).

3. A wind resistant test wall system according to claim 1, wherein: The lifting mechanism (2) comprises: a second driving member (21); a screw transmission structure comprising a transmission screw (22) and a first transmission nut (23) drivingly connected, the transmission screw (22) being drivingly connected to the second driving member (21) to realize the vertical reciprocating movement of the first transmission nut (23); a support member (24) spacedly sleeved outside the transmission screw (22) and mounted on the first transmission nut (23), the support member (24) and the first transmission nut (23) forming the lifting part, and the tilting mechanism (3) being mounted on the support member (24).

4. A wind resistant test wall system according to claim 3, wherein: The lifting mechanism (2) further comprises a guide member (25) sleeved on the support member (24), the guide member (25) being relatively fixed with the base (11); An elastic member (26) is arranged between the guide member (25) and the support member (24) to improve the stability of the support member (24) during lifting.

5. A wind-wall system for wind resistance testing according to any one of claims 1-4, characterized in that: The tilting mechanism (3) comprises: a third driving member (31); a first reverser (32) drivingly connected with the third driving member (31) and having two symmetrically arranged first output ends (321), the two first output ends (321) being capable of being driven by the third driving member (31) to rotate synchronously; Two second commutators (33) are in one-to-one correspondence with two first output ends (321) through a first transmission member (34) and are respectively provided with a second output end, and the two second output ends can be driven to rotate synchronously by the two first output ends (321); Two lead screws (35) are in one-to-one correspondence with the two second output ends and can be driven to rotate synchronously by the two second output ends; Two second transmission members are in one-to-one correspondence with the two lead screws (35) and are used to be rotatably connected with the wind wall (4), and the two second transmission members can be driven to reciprocate along the extension direction of the lead screw (35) and drive the wind wall (4) to reciprocate along an axis.

6. A wind resistance test wall system according to claim 5, wherein: The first transmission member (34) comprises a first coupling (341), a connecting rod (342) and a second coupling (343) connected in sequence; the first coupling (341) is connected to the corresponding first output end (321); and the second coupling (343) is connected to the input end of the corresponding second commutator (33).

7. A wind resistant test wall system according to claim 6, wherein: The second transmission member comprises a second transmission nut (36) and a transmission part (37) rotatably connected; the second transmission nut (36) is in transmission connection with the corresponding lead screw (35); and the transmission part (37) is used to be rotatably connected with the wind wall (4).

8. A wind resistant test wall system according to claim 7, wherein: The pitch mechanism (3) further comprises two guide assemblies, each of which comprises a linear guide rail (38) and a sliding block (39) slidably arranged on the linear guide rail (38), and the two sliding blocks (39) are fixedly connected to the two second transmission nuts (36) in one-to-one correspondence, and the linear guide rail (38) extends in the same direction as the lead screw (35).

9. A wind-wall system for wind resistance testing according to any one of claims 1-4, characterized in that: The wind wall (4) comprises a support frame (41), at least one fan module (42) and at least one control assembly (43); At least one mounting groove (411) is arranged on the support frame (41), and at least one fan module (42) is arranged in the mounting groove (411); The fan module (42) is used to generate a wind field and is detachably connected with the support frame (41) through a first connecting member; The number of the fan modules (42) is the same as that of the control assemblies (43); each control assembly (43) is arranged beside each fan module (42) in one-to-one correspondence; each control assembly (43) is electrically connected with the adjacent fan module (42) to control the wind field; and each control assembly (43) is detachably connected with the support frame (41) or the adjacent fan module (42).

10. A wind resistance test wall system according to claim 9, characterized in that: The fan module (42) comprises: An installation plate (421) is arranged in the mounting groove (411) and is detachably connected with the support frame (41) through the first connecting member; and the installation plate (421) has a ring structure; A connecting plate (422) is connected to the inner wall or end face of the installation plate (421), and at least one mounting hole (423) is arranged on the connecting plate (422). A fan (424) is detachably installed on the connecting plate (422) through the mounting hole (423) and is electrically connected with a corresponding control assembly (43).

11. A wind resistant test wall system according to claim 10, wherein: The connecting plate (422) is provided with a plurality of mounting holes (423) arranged in an array. The mounting plate (421) and the connecting plate (422) form a mounting structure which is a central symmetric structure.

12. A wind resistant test wall system according to claim 11, wherein: The mounting plate (421) is a square hollow plate. The fan module (42) further comprises a fixing plate (426), and each of the four straight edge regions of the end of the mounting plate (421) away from the connecting plate (422) is connected with a fixing plate (426). The four fixing plates (426) are symmetrically arranged in pairs. Two of the symmetrically arranged fixing plates (426) are detachably connected with the support frame (41) through the first connecting piece, and at least one of the other two symmetrically arranged fixing plates (426) is detachably connected with the adjacent control assembly (43).

Images