Tensioning cable aerodynamic resistance simulation loading device and loading method in steady-state flow field environment

Abstract

The invention relates to the technical field of rope-driven parallel robot testing, in particular to a tension cable aerodynamic resistance simulation loading device and loading method in a steady-state flow field environment. The loading device comprises a first cable moving end point and a second cable moving end point, a flexible cable is arranged between the first cable moving end point and the second cable moving end point, a plurality of loading pipes are arranged on the flexible cable at intervals, and a self-adaptive elastic piece is arranged between every two adjacent loading pipes; the pulling mechanism is arranged on the loading pipe, the pulling mechanism comprises at least two stages of pulling assemblies which are arranged in a stacked mode, each stage of pulling assembly comprises a plurality of groups of pulling pieces, and the group number of the previous stage of pulling pieces is two times of the group number of the next stage of pulling pieces; and one end of the loading stay wire is connected with the pulling mechanism, and the loading stay wire penetrates through the sliding mechanism. The distance between the loading pipes is automatically adjusted through deformation of the flexible cable, so that aerodynamic loads uniformly act on the whole cable body, even if the shape of the flexible cable is changed, the stress uniformity can still be kept, and the accuracy of a simulation result is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rope-driven parallel robot testing, and in particular to a tension rope aerodynamic resistance simulation loading device and a loading method under a steady-state flow field environment. Background Art

[0002] With the rapid development of modern aerospace and unmanned aerial vehicle technology, aerial recovery and docking technology has gradually become a research focus. Aerial recovery is mainly used in scenarios such as reusable rocket recovery, drone recovery, and return capsule aerial recovery. These systems generally use flexible structures, such as flexible cables and flexible connecting belts, to achieve flexible and precise control during the recovery and docking process. These flexible structures are affected by complex aerodynamic loads during flight, especially in high-altitude and high-speed environments. The aerodynamic loads show significant nonlinear characteristics, which makes the simulation of aerodynamic loads in ground tests extremely challenging.

[0003] In aerial operations, flexible cable structures are widely used due to their unique advantages. First of all, the cable structure has a small windward area, light weight, and is easy to recover and release, which makes it particularly suitable for complex operations in aerial environments. In addition, the flexible cable structure has good axial bearing capacity and can meet the tension requirements in highly dynamic environments. Therefore, in order to verify the reliability and performance of the flexible cable structure during the research and development and testing stages, ground simulation tests are usually required. However, due to the complex force conditions of the flexible cable structure in actual flight, the requirements for ground aerodynamic load simulation loading are extremely high. It is necessary to accurately load aerodynamic loads that meet the actual environment under ground conditions to ensure the effectiveness and reliability of the test.

[0004] At present, simulation of aerodynamic loads is often carried out in wind tunnels. Although wind tunnel tests can better simulate the aerodynamic load environment of aircraft, such tests are expensive and the wind tunnel test space is limited. It is not suitable for systematic testing of large-scale flexible cable structures, especially for full-scale simulation of flexible structures. The test results are easily disturbed, affecting the accuracy of the test. In short, the application of existing flexible cable structure aerodynamic load simulation methods in laboratory environments is still blank, and there is no public technology that can accurately load the aerodynamic resistance of flexible cables in the laboratory. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the simulation test results of the aerodynamic load in the prior art are easily disturbed, affecting the accuracy of the test, thereby providing a tension cable aerodynamic resistance simulation loading device and loading method under a steady flow field environment.

[0006] In order to solve the above technical problems, the present invention provides a tensioning cable aerodynamic resistance simulation loading device under a steady flow field environment, including: a first cable moving end point and a second cable moving end point, a flexible cable is arranged between the first cable moving end point and the second cable moving end point, a plurality of loading tubes are arranged on the flexible cable at intervals, and an adaptive elastic member is arranged between two adjacent loading tubes; a pulling mechanism is arranged on the loading tube, the pulling mechanism includes at least two levels of pulling components, and the pulling components of each level include multiple groups of pulling members, and the number of groups of the pulling members of the previous level is twice the number of groups of the pulling members of the next level; a loading wire, one end of which is connected to the pulling mechanism, the loading wire passes through the sliding mechanism, and a load elastic member is arranged on the loading wire, and the other end of the loading wire is connected to the loading motor.

[0007] Furthermore, the pulling member includes a pull wire and a support rod, the pull wire is used to connect the loading tube, and the support rod is used to connect two adjacent pull wires.

[0008] Furthermore, the guy wires, the struts, and the loading guy wires are all in a plane formed by the wind direction and the first and second cable moving end points.

[0009] Furthermore, the pulling mechanism has a four-stage pulling assembly.

[0010] Furthermore, the sliding mechanism includes a slideway, a pulley, and an adjusting motor. The pulley is arranged on the slideway, and the loading wire is laid on the pulley. The pulley is connected to the adjusting motor.

[0011] Furthermore, the loading motor and the regulating motor are arranged on both sides of the loading wire.

[0012] Furthermore, the adaptive elastic member is an adaptive spring.

[0013] Furthermore, the load elastic member is a load spring.

[0014] The present invention also provides a loading method using the tensioning cable aerodynamic resistance simulation loading device under a steady-state flow field environment, comprising:

[0015] Fixed wind direction, variable length and position of flexible rope

[0016] Adjust the distance between the moving end point of the first cable and the moving end point of the second cable to change the length of the flexible cable and fix the flexible cable at the desired position; control the tension of the loading cable through the loading motor to transfer the simulated pneumatic load to the flexible cable step by step; the adaptive elastic part automatically adjusts the distribution of multiple loading tubes during the loading process to make the loading force evenly distributed in the length direction of the flexible cable, and maintain uniform force regardless of how the length of the flexible cable changes; adjust the motor to drive the pulley to slide on the slideway to ensure that the loading cable can still adjust its direction at different lengths, thereby ensuring smooth transmission of the loading force.

[0017] Further, including:

[0018] The fixed point of the flexible cable remains unchanged, but the wind direction changes

[0019] The length and position of the flexible cable are fixed without changing the position of its fixed point; the direction of the wind source is adjusted so that the airflow blows toward the flexible cable from different directions to simulate different wind directions; when the wind direction changes, the pulley slides on the slideway, and the position of the pulley is controlled by the adjusting motor to ensure that the force direction of the loading cable is consistent with the direction of the aerodynamic load; the distribution of the loading tube is adjusted by the adaptive elastic part so that the flexible cable is evenly stressed at different parts during the change of wind direction.

[0020] The technical solution of the present invention has the following advantages:

[0021] 1. The present invention provides a tensioning cable aerodynamic resistance simulation loading device under a steady-state flow field environment, comprising: a first cable moving end point and a second cable moving end point, a flexible cable is arranged between the first cable moving end point and the second cable moving end point, a plurality of loading tubes are arranged on the flexible cable at intervals, and an adaptive elastic member is arranged between two adjacent loading tubes; a pulling mechanism is arranged on the loading tube, the pulling mechanism comprises at least two levels of pulling components, each level of the pulling components comprises a plurality of groups of pulling members, and the number of groups of the pulling members of the previous level is twice the number of groups of the pulling members of the next level; a loading wire, one end of which is connected to the pulling mechanism, the loading wire passes through the sliding mechanism, and a load elastic member is arranged on the loading wire, and the other end of the loading wire is connected to the loading motor.

[0022] A flexible cable is arranged at the first cable moving end point and the second cable moving end point, and a plurality of loading tubes are arranged at intervals on the flexible cable, and each loading tube is connected to a pulling member, wherein the number of pulling members is determined according to the number of stages of the pulling assembly, that is, the number of groups of the pulling members in the previous stage is twice the number of groups of the pulling members in the next stage. Then, a loading cable is connected to the pulling mechanism, and after the loading cable changes direction through a sliding mechanism, it passes through a load elastic member and is finally connected to a loading motor. The loading cable is wound by the loading motor, and the length of the load elastic member is controlled to achieve the application of the load force.

[0023] The tension cable aerodynamic resistance simulation loading device under steady-state flow field environment has efficient aerodynamic load simulation: compared with the existing wind tunnel test, the present invention realizes the equivalent simulation of the aerodynamic load of the flexible cable by loading the transmission system of the motor and the multi-stage pulling member. The method does not require expensive wind tunnel equipment and can be completed under laboratory conditions, which greatly reduces the experimental cost and significantly improves the test efficiency. It is suitable for the experimental needs of a variety of flexible cable aerodynamic load simulation.

[0024] Adaptable structural design: The present invention adopts adaptive elastic parts to make the loading tubes evenly distributed in the length direction of the flexible cable during loading. This adaptive design can automatically adjust the spacing of the loading tubes according to the deformation of the flexible cable, so that the aerodynamic load acts evenly on the entire cable body. Even when the shape of the flexible cable changes, the force uniformity can be maintained, which improves the accuracy of the simulation results.

[0025] Accurate mechanical loading control: The loading motor can accurately control the tension of the loading cable, and can simulate loading of different aerodynamic resistances by adjusting the length of the loading elastic member. Compared with the difficulty in achieving stable aerodynamic load force control in wind tunnel tests, the present invention can achieve detailed control of the loading force through precise adjustment of the loading motor and the loading elastic member, thereby improving the accuracy and reliability of the loading force.

[0026] Good structural stability: Through the stacked connection of multi-stage pulling parts, the force transmission path of the entire loading device is clear, and the pulling components at each level remain stable under different force conditions. Especially when the spatial configuration of the flexible cable is deformed, the entire device can adaptively transmit the loading force, ensuring the stability of the loading device and the reliability of the test results.

[0027] 2. The present invention provides a tensioning cable aerodynamic resistance simulation loading device under a steady flow field environment, wherein the sliding mechanism includes a slideway, a pulley, and an adjusting motor. The pulley is arranged on the slideway, and the loading wire is laid on the pulley, and the pulley is connected to the adjusting motor.

[0028] The pulley can slide on the slideway, and the position of the pulley in the slideway is adjusted by the motor, so that the loading cable can apply tension at different positions and angles to adapt to different configuration requirements of the flexible cable, thereby better simulating the aerodynamic load characteristics in the real environment.

[0029] This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the disclosure, nor is it intended to limit the scope of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A structural schematic diagram of scenario 1 of the tensioning cable aerodynamic resistance simulation loading device under a steady-state flow field environment provided by the present invention;

[0032] Figure 2 for Figure 1 Schematic diagram of the structure at A in the middle;

[0033] Figure 3 A schematic structural diagram of scenario 2 of the tensioning cable aerodynamic resistance simulation loading device in a steady-state flow field environment provided by the present invention;

[0034] Figure 4 for Figure 3 Schematic diagram of the structure at B in the figure.

[0035] Description of reference numerals:

[0036] 1. The moving end point of the first cable; 2. The moving end point of the second cable; 3. The loading tube; 4. The primary guy wire; 5. The primary strut; 6. The secondary guy wire; 7. The secondary strut; 8. The tertiary guy wire; 9. The tertiary strut; 10. The quaternary guy wire; 11. The quaternary strut; 12. The loading guy wire; 13. The adjusting motor; 14. The pulley; 15. The slideway; 16. The load elastic part; 17. The loading motor; 18. The flexible cable; 19. The adaptive elastic part. DETAILED DESCRIPTION

[0037] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0038] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0039] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0040] In the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] The disclosure below provides many different embodiments or examples to realize different structures of the present disclosure. In order to simplify the disclosure of the present disclosure, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present disclosure. In addition, the present disclosure can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present disclosure provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0042] The preferred embodiments of the present disclosure are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0043] See also Figures 1 to 4 As shown, the present invention provides a tensioning cable aerodynamic resistance simulation loading device under a steady-state flow field environment, comprising: a first cable moving end point 1 and a second cable moving end point 2, a flexible cable 18 is provided between the first cable moving end point 1 and the second cable moving end point 2, a plurality of loading tubes 3 are arranged on the flexible cable 18 at intervals, and an adaptive elastic member 19 is provided between two adjacent loading tubes 3; a pulling mechanism is provided on the loading tube 3, the pulling mechanism comprises at least two levels of pulling components, and is stacked, each level of the pulling components comprises a plurality of groups of pulling members, and the number of groups of the pulling members of the previous level is twice the number of groups of the pulling members of the next level; a loading wire 12, one end of which is connected to the pulling mechanism, the loading wire 12 passes through the sliding mechanism, and a load elastic member 16 is provided on the loading wire 12, and the other end of the loading wire 12 is connected to the loading motor 17.

[0044] A flexible cable 18 is arranged on the first cable moving end point 1 and the second cable moving end point 2, and a plurality of loading tubes 3 are arranged at intervals on the flexible cable 18, and each loading tube 3 is connected to a pulling member. The number of pulling members is determined according to the number of stages of the pulling assembly, that is, the number of groups of the pulling members in the previous stage is twice the number of groups of the pulling members in the next stage. The loading wire 12 is then connected to the pulling mechanism. After the loading wire 12 changes direction through the sliding mechanism, it passes through the load elastic member 16 and is finally connected to the loading motor 17. The loading wire 12 is wound and controlled by the loading motor 17. The length of the load elastic member 16 is controlled to achieve the application of the load force. If it is desired to improve the uniformity and accuracy of loading, more stages of pulling assemblies can be set.

[0045] The tension cable aerodynamic resistance simulation loading device under steady-state flow field environment has efficient aerodynamic load simulation: compared with the existing wind tunnel test, the present invention realizes equivalent simulation of the aerodynamic load of the flexible cable 18 by loading the transmission system of the motor 17 and the pulling member. The method does not require expensive wind tunnel equipment and can be completed under laboratory conditions, greatly reducing the experimental cost and significantly improving the test efficiency, and is suitable for various experimental requirements of flexible cable 18 aerodynamic load simulation.

[0046] Adaptable structural design: The present invention adopts an adaptive elastic member 19 to enable the loading tubes 3 to be evenly distributed in the length direction of the flexible cable 18 during the loading process. This adaptive design can automatically adjust the spacing of the loading tubes 3 according to the deformation of the flexible cable 18, so that the aerodynamic load acts evenly on the entire cable body, and even when the shape of the flexible cable 18 changes, the uniformity of the force can be maintained, thereby improving the accuracy of the simulation results.

[0047] Accurate mechanical loading control: The loading motor 17 can accurately control the tension of the loading cable 12, and achieve simulated loading of different aerodynamic resistances by adjusting the length of the load elastic member 16. Compared with the difficulty in achieving stable aerodynamic load force control in wind tunnel tests, the present invention can achieve detailed control of the loading force through precise adjustment of the loading motor 17 and the load elastic member 16, thereby improving the accuracy and reliability of the loading force.

[0048] Good structural stability: Through the stacked connection of multi-stage pulling parts, the force transmission path of the entire loading device is clear, and the pulling components at each level remain stable under different force conditions. Especially when the spatial configuration of the flexible cable 18 is deformed, the entire device can adaptively transmit the loading force, ensuring the stability of the loading device and the reliability of the test results.

[0049] The main performance indicators of the present invention include:

[0050] Loading accuracy: The loading motor 17 can accurately control the loading force, and the loading accuracy is within 5%, meeting the high-precision simulation requirements of complex pneumatic loads.

[0051] Uniform distribution effect: The adaptive elastic member 19 makes the distribution uniformity of the loading tube 3 on the flexible cable 18 reach more than 90%, effectively ensuring the uniformity of force.

[0052] Cost saving: Compared with wind tunnel tests, the experimental cost is reduced by at least 50%. The equipment is easy to install and maintain and is suitable for repeated experiments.

[0053] Therefore, compared with traditional wind tunnel tests, the present invention has the advantages of low cost, high precision and high adaptability. It can accurately simulate the aerodynamic load of the flexible cable 18 in a laboratory environment, and provides an effective aerodynamic load simulation method for the design and optimization of the flexible cable 18 under aerodynamic load.

[0054] In some optional embodiments, the pulling member includes a pull wire and a support rod, the pull wire is used to connect the loading tube 3, and the support rod is used to connect two adjacent pull wires.

[0055] In this embodiment, the pulling mechanism has a four-stage pulling assembly, which is described in detail as a four-stage pulling assembly, namely, a primary pulling assembly, a secondary pulling assembly, a tertiary pulling assembly, and a quaternary pulling assembly.

[0056] Among them, the first-level pulling assembly includes eight first-level pulling members, each of which includes a first-level pulling wire 4 and a first-level support rod 5; the second-level pulling assembly includes four second-level pulling members, each of which includes a second-level pulling wire 6 and a second-level support rod 7; the third-level pulling assembly includes two third-level pulling members, each of which includes a third-level pulling wire 8 and a third-level support rod 9; the fourth-level pulling assembly includes one fourth-level pulling member, each of which includes a fourth-level pulling wire 10 and a fourth-level support rod 11.

[0057] The primary tension wire 4 and the primary support rod 5 are fixed between the first cable moving end point 1 and the second cable moving end point 2 through the loading tube 3. One end of the primary tension wire 4 is connected to the end of the primary support rod 5 and fixed through the loading tube 3 so that it remains stable under the action of tension;

[0058] The secondary tension wire 6 and the secondary support rod 7, the tertiary tension wire 8 and the tertiary support rod 9 are stacked and connected in sequence. Each level of tension wire 4 and the support rod combination are connected through a fixed point, so that the tension wires at each level remain stable under different stress conditions;

[0059] The connection between the four-stage guy wire 10 and the four-stage strut 11 is also through a fixed point, so that the aerodynamic resistance transmitted by the guy wire can be transmitted to the flexible cable 18 step by step.

[0060] Specifically, the guy wires, the struts, and the loading guy wires 12 are all in a plane formed by the first and second cable movable end points 1 and 2 in the wind direction.

[0061] In some optional embodiments, the sliding mechanism includes a slideway 15 and a pulley 14 , and an adjusting motor 13 . The pulley 14 is disposed on the slideway 15 , and the loading wire 12 is laid on the pulley 14 , and the pulley 14 is connected to the adjusting motor 13 .

[0062] The pulley 14 can slide on the slideway 15, and the adjusting motor 13 controls the position of the pulley 14 in the slideway 15, so that the loading cable 12 can apply tension at different positions and angles to adapt to different configuration requirements of the flexible cable 18, thereby better simulating the aerodynamic load characteristics in the real environment.

[0063] The regulating motor 13 is connected to the pulley 14 via a pull rope, thereby driving the pulley 14 to move in the slideway 15 .

[0064] In this embodiment, the loading motor 17 and the adjusting motor 13 are arranged on both sides of the loading cable 12 , so that the loading motor 17 applies load to the four-stage cable 10 and the adjusting motor 13 adjusts the position of the pulley 14 .

[0065] Wherein, the adaptive elastic member 19 is an adaptive spring; and the load elastic member 16 is a load spring.

[0066] The present invention also provides a loading method using a tensioning cable aerodynamic resistance simulation loading device under a steady-state flow field environment, comprising:

[0067] Scenario 1: Fixed wind direction, variable length and position of flexible cable 18

[0068] In this scenario, the wind direction remains constant, while the length and position of the flexible cable 18 change. This scenario simulates the effect of the change in the length of the flexible cable 18 on the aerodynamic load distribution under fixed flow field conditions.

[0069] Implementation method:

[0070] Equipment configuration:

[0071] The wind source generates airflow in a fixed direction, which acts on the flexible cable 18;

[0072] The flexible cable 18 is connected between a first cable moving end point 1 and a second cable moving end point 2 , and the positions and intervals between the two end points can be adjusted to change the length of the flexible cable 18 .

[0073] The plurality of loading tubes 3 and the adaptive elastic members 19 are evenly distributed in the length direction of the flexible cable 18 to ensure that the aerodynamic load can be evenly applied when the length changes.

[0074] Specific implementation steps:

[0075] Adjust the distance between the first cable moving end point 1 and the second cable moving end point 2, change the length of the flexible cable 18, and fix the flexible cable 18 at the desired position; control the tension of the loading cable 12 through the loading motor 17, and transfer the simulated pneumatic load to the flexible cable 18 step by step; the adaptive elastic member 19 automatically adjusts the distribution of multiple loading tubes 3 during the loading process, so that the loading force is evenly distributed in the length direction of the flexible cable 18, and no matter how the length of the flexible cable 18 changes, the force can be kept uniform; adjust the motor 13 to drive the pulley 14 to slide on the slide 15, to ensure that the loading cable 12 can still adjust the direction at different lengths, and ensure the smooth transmission of the loading force.

[0076] Implementation effect:

[0077] This solution successfully achieves uniform loading of aerodynamic loads of flexible cables 18 of different lengths under a fixed wind direction. When the length of the flexible cables 18 changes, the adaptive elastic members 19 can automatically adjust the spacing of the loading tubes 3 .

[0078] Scenario 2: The fixed point of the flexible cable 18 remains unchanged, but the wind direction changes

[0079] In this scenario, the fixed point position of the flexible cable 18 remains unchanged, while the wind direction changes. This scenario is used to simulate the aerodynamic load force of the flexible cable 18 under different wind directions.

[0080] Implementation method:

[0081] Equipment configuration:

[0082] The two ends of the flexible cable 18 are respectively fixed to the first cable moving end point 1 and the second cable moving end point 2, and remain unchanged.

[0083] The wind source can change the direction of the airflow to simulate the aerodynamic environment under different wind directions.

[0084] The loading motor 17 controls the loading wire 12 to apply a pneumatic load, and the loading direction is adjustable through the cooperation of the pulley 14 and the slideway 15 .

[0085] Implementation steps:

[0086] The length and position of the flexible cable 18 are fixed without changing the position of its fixed point; the direction of the wind source is adjusted so that the airflow blows toward the flexible cable 18 from different directions to simulate different wind directions; when the wind direction changes, the pulley 14 slides on the slide 15, and the position of the pulley 14 is controlled by the adjusting motor 13 to ensure that the force direction of the loading cable 12 is consistent with the direction of the aerodynamic load; the distribution of the loading tube 3 is adjusted by the adaptive elastic member 19, so that during the change of wind direction, the flexible cable 18 is evenly stressed at different parts.

[0087] Implementation effect:

[0088] This solution can accurately simulate the aerodynamic load distribution of the flexible cable 18 under different wind directions. By adjusting the position of the pulley 14 in the slideway 15, automatic adjustment of the loading direction is achieved, so that the loading force is always consistent with the aerodynamic direction, thereby improving the loading accuracy and stability.

[0089] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A tension cable aerodynamic drag simulation loading device under a steady flow field environment, characterized in that: include: A first cable movable end point (1) and a second cable movable end point (2), a flexible cable (18) being arranged between the first cable movable end point (1) and the second cable movable end point (2), a plurality of loading tubes (3) being arranged at intervals on the flexible cable (18), and an adaptive elastic member (19) being arranged between two adjacent loading tubes (3); A pulling mechanism is arranged on the loading tube (3), the pulling mechanism comprises at least two levels of pulling components, and the pulling components of each level comprise a plurality of groups of pulling members, and the number of groups of the pulling members of the previous level is twice the number of groups of the pulling members of the next level; A loading cable (12) has one end connected to the pulling mechanism, the loading cable (12) passes through the sliding mechanism, a load elastic member (16) is arranged on the loading cable (12), and the other end of the loading cable (12) is connected to the loading motor (17).

2. The device for simulating the aerodynamic resistance of a tensioning cable in a steady flow field environment according to claim 1 is characterized in that: The pulling member comprises a pulling wire and a support rod, the pulling wire is used to connect the loading tube (3), and the support rod is used to connect two adjacent pulling wires.

3. The device for simulating aerodynamic resistance of tensioning cable in a steady flow field environment according to claim 2 is characterized in that: The tension wires, support rods, and loading tension wires (12) are all located in a plane formed by the first cable movable end point (1) and the second cable movable end point (2) in the wind direction.

4. The device for simulating aerodynamic resistance of tensioning cables in a steady flow field environment according to claim 3 is characterized in that: The pulling mechanism has a four-stage pulling assembly.

5. The aerodynamic resistance simulation loading device for tensioning cables in a steady flow field environment according to any one of claims 1 to 4, characterized in that: The sliding mechanism comprises a slideway (15), a pulley (14), and an adjusting motor (13); the pulley (14) is arranged on the slideway (15), and the loading cable (12) is laid on the pulley (14); and the pulley (14) is connected to the adjusting motor (13).

6. The device for simulating the loading of aerodynamic resistance of a tensioning cable under a steady flow field environment according to claim 5, characterized in that: The loading motor (17) and the regulating motor (13) are arranged on both sides of the loading pull wire (12).

7. The device for simulating aerodynamic resistance of tensioning cables in a steady flow field environment according to claim 5, characterized in that: The adaptive elastic member (19) is an adaptive spring.

8. The device for simulating aerodynamic resistance of tensioning cables in a steady flow field environment according to claim 5, characterized in that: The load elastic member (16) is a load spring.

9. A loading method using a tension cable aerodynamic resistance simulation loading device in a steady flow field environment according to any one of claims 1 to 8, characterized in that: include: Fixed wind direction, variable length and position of flexible rope (18) The distance between the first cable moving end point (1) and the second cable moving end point (2) is adjusted to change the length of the flexible cable (18), and the flexible cable (18) is fixed at a desired position; the tension of the loading cable (12) is controlled by the loading motor (17), and the simulated pneumatic load is transmitted step by step to the flexible cable (18); the adaptive elastic member (19) automatically adjusts the distribution of the plurality of loading tubes (3) during the loading process, so that the loading force is evenly distributed in the length direction of the flexible cable (18), and the uniform force can be maintained regardless of how the length of the flexible cable (18) changes; the motor (13) is adjusted to drive the pulley (14) to slide on the slideway (15), so as to ensure that the loading cable (12) can still adjust its direction at different lengths, thereby ensuring the smooth transmission of the loading force.

10. The loading method of the tension cable aerodynamic resistance simulation loading device under a steady flow field environment according to claim 9, characterized in that: include: The fixed point of the flexible cable (18) remains unchanged, but the wind direction changes The length and position of the flexible rope (18) are fixed without changing the position of the fixed point; the direction of the wind source is adjusted so that the airflow blows toward the flexible rope (18) from different directions to simulate different wind directions; when the wind direction changes, the pulley (14) slides on the slideway (15), and the position of the pulley (14) is controlled by the regulating motor (13) to ensure that the force direction of the loading cable (12) is consistent with the direction of the pneumatic load; the distribution of the loading tube (3) is adjusted by the adaptive elastic member (19) so that the flexible rope (18) is evenly stressed at different positions during the change of wind direction.

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